[ { "id": "https://authors.library.caltech.edu/records/bacqt-a9668", "eprint_id": 116246, "eprint_status": "archive", "datestamp": "2023-08-20 07:14:10", "lastmod": "2023-10-23 15:20:41", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Earnshaw-Hannah-P", "name": { "family": "Earnshaw", "given": "Hannah P." }, "orcid": "0000-0001-5857-5622" }, { "id": "Madsen-Kristin-K", "name": { "family": "Madsen", "given": "Kristin K." }, "orcid": "0000-0003-1252-4891" }, { "id": "Forster-K", "name": { "family": "Forster", "given": "Karl" }, "orcid": "0000-0001-5800-5531" }, { "id": "Grefenstette-Brian-W", "name": { "family": "Grefenstette", "given": "Brian W." }, "orcid": "0000-0002-1984-2932" }, { "id": "Brightman-Murray", "name": { "family": "Brightman", "given": "Murray" }, "orcid": "0000-0002-8147-2602" }, { "id": "Zoglauer-Andreas", "name": { "family": "Zoglauer", "given": "Andreas" }, "orcid": "0000-0001-9067-3150" }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona" }, "orcid": "0000-0003-2992-8024" } ] }, "title": "Reconstruction of the NuSTAR PSF Using Single-laser Metrology", "ispublished": "unpub", "full_text_status": "restricted", "note": "\u00a9 2022 IEEE. \n\nThis work was supported under NASA Contract No. NNG08FD60C and made use of data from the NuSTAR mission, a project led by the California Institute of Technology, managed by the Jet Propulsion Laboratory, and funded by the National Aeronautics and Space Administration. We thank the NuSTAR Operations, Software, and Calibration teams for support with the execution and analysis of these observations. This research has made use of the NuSTAR Data Analysis Software (NuSTARDAS) jointly developed by the ASI Science Data Center (ASDC, Italy) and the California Institute of Technology.", "abstract": "This paper describes a method by which the metrology system of the Nuclear Spectroscopic Telescope Array (NuSTAR) X-ray space observatory, which uses two lasers to characterize the relative motion of the optics and focal plane benches, can be approximated if one laser fails. The optics and focal plane benches are separated by a ten-meter-long rigid mast that undergoes small amounts of thermal flexing depending on how the spacecraft is illuminated by the Sun. Compensation for this motion is required in order to produce an in-focus image. We analyze the trends of mast motion by observation parameters, using archival NuSTAR data between 2012 and 2021, in order to discover whether parameters such as the solar aspect angle (SAA) can be used to predict the mast motion in future observations. We find that, by using the SAA, observation date, and orbital phase, we can simulate the motion measured by one of the lasers by translating the track produced by the other laser and applying modifications to the mast aspect solution calculated during the NuSTAR data reduction pipeline. With this simulated mast solution, we are able to reconstruct a minimally distorted point spread function for all but two narrow ranges of SAA. We plan to implement the generation of simulated mast files alongside the usual NuSTAR data reduction pipeline for contingency purposes should a laser on the spacecraft fail in the future. This work also has implications for reducing the risk of implementing laser metrology systems on future missions that use deployable masts to achieve the long focal lengths required in high-energy astronomy.", "date": "2022-03-05", "date_type": "published", "publisher": "IEEE", "place_of_pub": "Piscataway, NJ", "pagerange": "1-8", "id_number": "CaltechAUTHORS:20220811-935515000", "isbn": "978-1-6654-3760-8", "book_title": "2022 IEEE Aerospace Conference (AERO)", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20220811-935515000", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG08FD60C" }, { "agency": "NASA/JPL/Caltech" } ] }, "local_group": { "items": [ { "id": "Astronomy-Department" }, { "id": "Space-Radiation-Laboratory" }, { "id": "NuSTAR" } ] }, "doi": "10.1109/aero53065.2022.9843468", "pub_year": "2022", "author_list": "Earnshaw, Hannah P.; Madsen, Kristin K.; et el." }, { "id": "https://authors.library.caltech.edu/records/g09sn-sfx55", "eprint_id": 117076, "eprint_status": "archive", "datestamp": "2023-08-20 02:43:03", "lastmod": "2024-01-15 21:27:59", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "Christina M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Li-Gang", "name": { "family": "Li", "given": "Gang" }, "orcid": "0000-0001-9313-251X" }, { "id": "Mason-Glenn-M", "name": { "family": "Mason", "given": "Glenn M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Shih-Albert-Y", "name": { "family": "Shih", "given": "Albert Y." } }, { "id": "Wang-Linghua", "name": { "family": "Wang", "given": "Linghua" } } ] }, "title": "Solar Energetic Particles", "ispublished": "unpub", "full_text_status": "public", "note": "Portions of this work have been supported at JHU/APL by NASA grant NNX17AC05G/125225 and L. W. thanks NSFC for support under grants 41861134033 and 41774183.", "abstract": "Solar energetic particles (SEPs) have been studied for over seven decades, initially from ground-based instrumentation and now routinely from spacecraft throughout the heliosphere. Our knowledge of the acceleration and transport of these particles from close to the Sun througzh the interplanetary medium has advanced dramatically in the last 40 years as the instrumentation and modeling capabilities have become more sophisticated. However, a full understanding of the conditions and processes that cause variability in SEP event characteristics remains elusive due to the scarcity of in situ measurements well inside 1 AU. This chapter reviews our current understanding of the properties of SEP events, how they are accelerated and transported, and the impact of those processes on event variability. It is not an exhaustive review, but provides a snapshot of the state of our understanding before the near-Sun observations from the Parker Solar Probe and Solar Orbiter missions reveal surprises that challenge this understanding.", "date": "2021-04-12", "date_type": "published", "publisher": "Wiley-American Geophysical Union", "place_of_pub": "Hoboken, NJ", "pagerange": "133-178", "id_number": "CaltechAUTHORS:20220919-979079200", "isbn": "9781119507536", "book_title": "Solar Physics and Solar Wind", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20220919-979079200", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX17AC05G/125225" }, { "agency": "National Natural Science Foundation of China", "grant_number": "41861134033" }, { "agency": "National Natural Science Foundation of China", "grant_number": "41774183" } ] }, "other_numbering_system": { "items": [ { "id": "1", "name": "Space physics and aeronomy collection" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.1002/9781119815600.ch4", "pub_year": "2021", "author_list": "Cohen, Christina M. S.; Li, Gang; et el." }, { "id": "https://authors.library.caltech.edu/records/pqtb9-1c684", "eprint_id": 98601, "eprint_status": "archive", "datestamp": "2023-08-19 17:46:11", "lastmod": "2024-01-14 21:56:23", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hamden-E-T", "name": { "family": "Hamden", "given": "Erika T." } }, { "id": "Hoadley-K-L", "name": { "family": "Hoadley", "given": "Keri" }, "orcid": "0000-0002-8636-3309" }, { "id": "Martin-D-Christopher", "name": { "family": "Martin", "given": "Christopher" }, "orcid": "0000-0002-8650-1644" }, { "id": "Schiminovich-D", "name": { "family": "Schiminovich", "given": "David" } }, { "id": "Nikzad-S", "name": { "family": "Nikzad", "given": "Shouleh" } }, { "id": "Milliard-B", "name": { "family": "Milliard", "given": "Bruno" } }, { "id": "Kyne-G", "name": { "family": "Kyne", "given": "Gillian" } } ] }, "title": "2018 flight of the faint intergalactic medium redshifted emission balloon (FIREBall-2) (Conference Presentation)", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2019 Society of Photo-Optical Instrumentation Engineers (SPIE).", "abstract": "In this talk, I will describe briefly the telescope, instrument, and flight of the Faint Intergalactic medium Redshifted Emission Balloon (FIREBall-2). FIREBall-2 is a UV multi-object spectrograph fed by a 1 meter parabola mirror. The instrument was designed to observe 4 pre-selected fields and uses a UV optimized delta-doped EMCCD. The telescope flew on September 22, 2018 from Fort Sumner, NM, as part of the fall CSBF balloon campaign. The telescope collected data for several night hours before being cut down. I will describe the testing, flight, and hardware performance with an emphasis on the in flight performance of the instrument, including resolution, throughput, and the overall operation of the UV optimized EMCCD. Additional talks will be presented on other aspects of the flight and data.", "date": "2019-09-09", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 1111814", "id_number": "CaltechAUTHORS:20190912-090006441", "isbn": "9781510629295", "book_title": "UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXI", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20190912-090006441", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Siegmund-O-H-W", "name": { "family": "Siegmund", "given": "Oswald H." } } ] }, "doi": "10.1117/12.2530083", "pub_year": "2019", "author_list": "Hamden, Erika T.; Hoadley, Keri; et el." }, { "id": "https://authors.library.caltech.edu/records/4cqq5-fvw41", "eprint_id": 98615, "eprint_status": "archive", "datestamp": "2023-08-19 17:46:39", "lastmod": "2024-01-14 21:56:38", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Smith-R-K", "name": { "family": "Smith", "given": "Randall K." } }, { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "Kristin" }, "orcid": "0000-0003-1252-4891" } ] }, "title": "Arcus: the soft x-ray grating explorer", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2019 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nThe research leading to these results has in part received funding from NASA contract 80ARC018C0002 (Arcus Phase A) and the Smithsonian Astrophysical Observatory. SRON is supported financially by NWO, the Netherlands Organization for Scientific Research.\n\n
Published - 111180W.pdf
", "abstract": "Arcus provides high-resolution soft X-ray spectroscopy in the 12-50 \u00c5 bandpass with unprecedented sensitivity, including spectral resolution < 2500 and effective area < 250 cm^2. The three top science goals for Arcus are (1) to measure the effects of structure formation imprinted upon the hot baryons that are predicted to lie in extended halos around galaxies, (2) to trace the propagation of outflowing mass, energy, and momentum from the vicinity of the black hole to extragalactic scales as a measure of their feedback, and (3) to explore how stars form and evolve. Arcus uses the same 12 m focal length grazing-incidence Silicon Pore X-ray Optics (SPOs) that ESA has developed for the Athena mission; the focal length is achieved on orbit via an extendable optical bench. The focused X-rays from these optics are diffracted by high-efficiency Critical-Angle Transmission (CAT) gratings, and the results are imaged with flight-proven CCD detectors and electronics. Combined with the high-heritage NGIS LEOStar-2 spacecraft and launched into 4:1 lunar resonant orbit, Arcus provides high sensitivity and high efficiency observing of a wide range of astrophysical sources.", "date": "2019-09-09", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 111180W", "id_number": "CaltechAUTHORS:20190912-133335405", "isbn": "9781510629295", "book_title": "UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXI", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20190912-133335405", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "80ARC018C0002" }, { "agency": "Smithsonian Astrophysical Observatory" }, { "agency": "Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Siegmund-O-H-W", "name": { "family": "Siegmund", "given": "Oswald H." } } ] }, "doi": "10.1117/12.2529499", "primary_object": { "basename": "111180W.pdf", "url": "https://authors.library.caltech.edu/records/4cqq5-fvw41/files/111180W.pdf" }, "pub_year": "2019", "author_list": "Smith, Randall K. and Madsen, Kristin" }, { "id": "https://authors.library.caltech.edu/records/qzbms-fkx32", "eprint_id": 98629, "eprint_status": "archive", "datestamp": "2023-08-19 17:48:08", "lastmod": "2024-01-14 21:57:04", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hoadley-K-L", "name": { "family": "Hoadley", "given": "Keri" }, "orcid": "0000-0002-8636-3309" }, { "id": "Hamden-E-T", "name": { "family": "Hamden", "given": "Erika T." } }, { "id": "Milliard-B", "name": { "family": "Milliard", "given": "Bruno" } }, { "id": "Khan-A-R", "name": { "family": "Khan", "given": "Aafaque R." } }, { "id": "Agarwal-S", "name": { "family": "Agarwal", "given": "Simran" } }, { "id": "Lin-Zeren", "name": { "family": "Lin", "given": "Zeren" } }, { "id": "Schiminovich-D", "name": { "family": "Schiminovich", "given": "David" } }, { "id": "Kyne-G", "name": { "family": "Kyne", "given": "Gillian" } }, { "id": "Evrard-J", "name": { "family": "Evrard", "given": "Jean" } }, { "id": "Martin-D-Christopher", "name": { "family": "Martin", "given": "D. Christopher" }, "orcid": "0000-0002-8650-1644" } ] }, "title": "The FIREBall-2 UV balloon telescope: 2018 flight and improvements for 2020", "ispublished": "unpub", "full_text_status": "public", "keywords": "Scientific Ballooning, CGM, Galaxy Evolution, Optical Alignment", "note": "\u00a9 2019 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nThis work was funded primarily through the APRA program for sub-orbital missions which funds the US side of FIREBall. CNES and CNRS provided support for the French side of the FIREBall collaboration. Dr. Hoadley is supported through the David & Ellen Lee Prize Postdoctoral Fellowship in Experimental Physics at Caltech. The FIREBall-2 collaboration would like thank the Columbia Scientific Ballooning Facility (CSBF) and Balloon Program Office (BPO/NASA) for their support throughout the 2017/2018 campaigned in Ft. Sumner, NM.\n\nPublished - 1111815.pdf
", "abstract": "The Faint Intergalactic-medium Redshifted Emission Balloon (FIREBall-2, FB-2) is designed to discover and map faint UV emission from the circumgalactic medium around low redshift galaxies (z ~ 0.3 (C IV); z ~ 0.7 (Ly\u03b1); z ~ 1.0 (O VI)). FIREBall-2's first launch, on September 22nd 2018 out of Ft. Sumner, NM, was abruptly cut short due to a hole that developed in the balloon. FIREBall-2 was unable to observe above its minimum require altitude (25 km; nominal: 32 km) for its shortest required time (2 hours; nominal: 8+ hours). The shape of the deflated balloon, as well as a concurrent full moon close to our observed target field, revealed a severe, off-axis scattered light path directly to the UV science detector. Additional damage to FB-2 added complications to the ongoing effort to prepare FB-2 for a quick re-flight. Upon landing, several mirrors in the optical chain, including the two large telescope mirrors, were damaged, resulting in chunks of material broken off the sides and reflecting surfaces. The magnifying optical element, called the focal corrector, was discovered to be misaligned beyond tolerance after the 2018 flight, with one of its two mirrors damaged from the landing impact. We describe the steps taken thus far to mitigate the damage to the optics, as well as procedures and results from the ongoing efforts to re-align the focal corrector and spectrograph optics. We report the throughput of the spectrograph before and after the 2018 flight and plans for improving it. Finally, we describe several methods by which we address the scattered light issues seen from FIREBall-2's 2018 campaign and present the current status of FB-2 to fly during the summer campaign in Palestine, TX in 2020.", "date": "2019-09-09", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 1111815", "id_number": "CaltechAUTHORS:20190913-080236356", "isbn": "9781510629295", "book_title": "UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXI", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20190913-080236356", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Advanced Research Projects Agency (ARPA)" }, { "agency": "Centre National d'\u00c9tudes Spatiales (CNES)" }, { "agency": "Centre National de la Recherche Scientifique (CNRS)" }, { "agency": "David and Ellen Lee Postdoctoral Scholarship" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Siegmund-O-H-W", "name": { "family": "Siegmund", "given": "Oswald H." } } ] }, "doi": "10.1117/12.2530047", "primary_object": { "basename": "1111815.pdf", "url": "https://authors.library.caltech.edu/records/qzbms-fkx32/files/1111815.pdf" }, "pub_year": "2019", "author_list": "Hoadley, Keri; Hamden, Erika T.; et el." }, { "id": "https://authors.library.caltech.edu/records/3ae0p-tys05", "eprint_id": 98602, "eprint_status": "archive", "datestamp": "2023-08-19 17:46:14", "lastmod": "2024-01-14 21:56:25", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Kyne-G", "name": { "family": "Kyne", "given": "Gillian" } }, { "id": "Hamden-E-T", "name": { "family": "Hamden", "given": "Erika T." } }, { "id": "Hoadley-K-L", "name": { "family": "Hoadley", "given": "Keri" }, "orcid": "0000-0002-8636-3309" }, { "id": "Martin-D-Christopher", "name": { "family": "Martin", "given": "Christopher" }, "orcid": "0000-0002-8650-1644" }, { "id": "Nikzad-S", "name": { "family": "Nikzad", "given": "Shouleh" } }, { "id": "Jewell-A-D", "name": { "family": "Jewell", "given": "April" }, "orcid": "0000-0001-8834-3769" } ] }, "title": "Ground- and space-based UV observations with EMCCDs (Conference Presentation)", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2019 Society of Photo-Optical Instrumentation Engineers (SPIE).", "abstract": "I will present on-going detector developments in our joint NASA/CNES balloon-borne UV multi-object spectrograph, FIREBall-2, the Faint Intergalactic Redshifted Emission Balloon. FIREBall-2 is a path finding mission to test new technology (EMCCDs) and make new constraints on the temperature and density of this gas. This instrument has been designed to detect faint emission from the circumgalactic medium (CGM) around low redshift galaxies (z ~ 0.7). One major change from FIREBall-1 has been the use of a delta-doped Electron Multiplying CCD (EMCCD). EMCCDs can be used in photon-counting (PC) mode to achieve extremely low readout noise (< 1 electron). Our testing initially focused on reducing clock-induced-charge (CIC) through wave shaping and well depth optimisation with a NuVu CCD Controller for Counting Photons (CCCP). This optimisation also includes methods for reducing dark current, via cooling, and exploring substrate voltage levels. I will present some of our dark current results from laboratory testing. We recently launched FIREBall-2 from Fort Sumner, New Mexico on September 22nd, 2018. This was the first time an EMCCD has been used for UV/optical observations in flight! I will present performance data from the flight including cosmic ray rate measurements, and some of our preliminary on-sky UV results using our data reduction.", "date": "2019-09-09", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 111150B", "id_number": "CaltechAUTHORS:20190912-091213260", "isbn": "9781510629233", "book_title": "UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts IX", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20190912-091213260", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Barto-A-A", "name": { "family": "Barto", "given": "Allison A." } }, { "id": "Breckinridge-J-B", "name": { "family": "Breckinridge", "given": "James B." } }, { "id": "Stahl-H-P", "name": { "family": "Stahl", "given": "H. Philip" } } ] }, "doi": "10.1117/12.2530520", "pub_year": "2019", "author_list": "Kyne, Gillian; Hamden, Erika T.; et el." }, { "id": "https://authors.library.caltech.edu/records/cx7sq-wc626", "eprint_id": 98059, "eprint_status": "archive", "datestamp": "2023-08-19 16:35:11", "lastmod": "2024-01-14 21:52:42", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "27-Day Modulation of Cosmic Ray Intensities During the Last Two Solar Minima", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2019 owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. \n\nPre-published on: 2019 July 22. \n\nThis work was supported by NASA under grant 80NSSC18K0223. We thank the ACE/SWEPAM and MAG instrument teams and the ACE Science Center (http://www.srl.caltech.edu/ACE/ASC) for making their solar wind and magnetic field data publicly available. We acknowledge the NMDB database (www.nmdb.eu), founded under the European Union's FP7 program (contract 213007) for hosting and distributing the Newark neutron monitor data from the Bartol Research Institute, supported by the NSF under grants ANT-0739620 and ANT-0838839. We thank Todd Hoeksema and the Wilcox Solar Observatory (http://wso.stanford.edu) for providing the HCS and coronal field map data.\n\nPublished - ICRC2019_1105.pdf
", "abstract": "Variations in both anomalous cosmic ray (ACR) and galactic cosmic ray (GCR) intensities at the solar rotation period (\u223c27 days) are often observed, and appear throughout much of 2016 into 2019 during the present A>0 polarity solar minimum. During the previous A<0 solar minimum, such variations were evident at energies from a few MeV to many GeV from mid-2007 through late 2008, and were much larger for ACRs than for GCRs at comparable energy. The particle intensities had an inverse power-law correlation with the solar wind speed, intensity peaks occurred only near alternate crossings of the heliospheric current sheet, and the variations in amplitudes were larger than typical for an A<0 epoch. The heliospheric environment was unusual compared with earlier cycles, with lower solar wind dynamic pressure, weaker interplanetary magnetic field strength, and record-setting GCR intensities. The present high-energy GCR intensities are higher than ever before reported in an A>0 cycle (although lower than in several A<0 cycles), indicating that unusual modulation conditions still prevail. \nUsing high statistical precision measurements from the ACE spacecraft along with neutron monitor data, we present observations of the 27-day intensity variations in both ACRs and GCRs during the last two solar minima and describe how they depend on particle energy, rigidity, and spectrum, and on interplanetary conditions such as solar wind speed, magnetic field strength, andmcurrent sheet tilt. We compare the variations observed in this cycle with those in the previous opposite polarity cycle and discuss implications for particle transport in the heliosphere.", "date": "2019-07", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20190821-075835551", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20190821-075835551", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "80NSSC18K0223" }, { "agency": "European Research Council (ERC)", "grant_number": "213007" }, { "agency": "NSF", "grant_number": "ANT-0739620" }, { "agency": "NSF", "grant_number": "ANT-0838839" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "ICRC2019_1105.pdf", "url": "https://authors.library.caltech.edu/records/cx7sq-wc626/files/ICRC2019_1105.pdf" }, "pub_year": "2019", "author_list": "Leske, R. A.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/53tha-mfx51", "eprint_id": 98062, "eprint_status": "archive", "datestamp": "2023-08-19 16:35:24", "lastmod": "2024-01-14 21:52:47", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Rauch-B-F", "name": { "family": "Rauch", "given": "B. F." } }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "SuperTIGER-2 2018 Flight Payload Recovery and Preliminary Instrument Assessment", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2019 owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. \n\nPre-published on: 2019 July 22. \n\nThis work was supported by NASA Grant #NNX15AC23G, the Peggy and Steve Fossett Foundation and the McDonnell Center for the Space Sciences. \n\nWe thank the NASA Columbia Scientific Balloon Facility (CSBF), the NASA Balloon Program Office, and the NSF United States Antarctic Program for the excellent and highly professional efforts that resulted in the record long-duration balloon flight for SuperTIGER and the successful recovery efforts for SuperTIGER and SuperTIGER-2. We also wish to thank Raven Aerostar, the manufacturer of the amazing balloon-craft we rely on for our science, as well as the Antarctic Support Contract (ASC) Team. Finally, we are particularly appreciative of the efforts of Scott Battaion (NASA/CSBF) and Kaija Webster (ASC) that made the recovery of SuperTIGER-2 and planned subsequent flight possible.\n\nPublished - ICRC2019_131.pdf
", "abstract": "The SuperTIGER (Trans-Iron Galactic Element Recorder) experiment was launched for the second time from the Long Duration Balloon (LDB) site near McMurdo Station, Antarctica on December 20, 2018 at 1:36 AM NZDT. The balloon reached a peak altitude of \u223c79,300 ft before it began to descend, and the flight had to be terminated after just over six hours aloft. The payload landed at 8:17 AM NZDT approximately 150 miles from McMurdo Station at 75.80 S and 161.68 E. Satellite imagery of the site revealed that it was in a crevasse field, but a Twin Otter reconnaissance flight showed none in the immediate vicinity. A subsequent site survey by a team flown in by helicopter with ground penetrating radar was able to flag a safe zone including helicopter landing sites. The SuperTIGER-2 payload was recovered in two days with two Bell 212 helicopters followed by one day with a Basler, which involved transferring the payload to a safe fixed wing landing site roughly two miles away in three helicopter sling loads. After return to the LDB site the instrument modules were reassembled, rewired and tested prior to their being shipped north. The instrument was found to be in overall good condition, with all testable electronics channels working, and minimal mechanical damage. SuperTIGER-2 could be refurbished to fly again as early as this next Antarctic season.", "date": "2019-07", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20190821-082409473", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20190821-082409473", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX15AC23G" }, { "agency": "Peggy and Steve Fossett Foundation" }, { "agency": "McDonnell Center for the Space Sciences" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "ICRC2019_131.pdf", "url": "https://authors.library.caltech.edu/records/53tha-mfx51/files/ICRC2019_131.pdf" }, "pub_year": "2019", "author_list": "Rauch, B. F.; Labrador, A. W.; et el." }, { "id": "https://authors.library.caltech.edu/records/h97fs-baa58", "eprint_id": 98057, "eprint_status": "archive", "datestamp": "2023-08-19 16:35:06", "lastmod": "2024-01-14 21:52:40", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Rose-R-G", "name": { "family": "Rose", "given": "R. G." } }, { "id": "Brandt-T-J", "name": { "family": "Brandt", "given": "T. J." }, "orcid": "0000-0003-4087-1786" }, { "id": "Dowkontt-P-F", "name": { "family": "Dowkontt", "given": "P. F." } }, { "id": "Hams-T", "name": { "family": "Hams", "given": "T." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Link-J-T", "name": { "family": "Link", "given": "J. T." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Murphy-R-P", "name": { "family": "Murphy", "given": "R. P." } }, { "id": "Rauch-B-F", "name": { "family": "Rauch", "given": "B. F." } }, { "id": "Sakai-Kenichi", "name": { "family": "Sakai", "given": "K." } }, { "id": "Sasaki-Makoto", "name": { "family": "Sasaki", "given": "M." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Walsh-N-E", "name": { "family": "Walsh", "given": "N. E." } }, { "id": "Ward-J-E", "name": { "family": "Ward", "given": "J. E." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Galactic Cosmic Ray Energy Spectra for Heavy Elements (Ne to Zn) from \u223c0.8 to \u223c10 GeV/nuc with the SuperTIGER Instrument", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2019 owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. \n\nPre-published on: 2019 July 22. \n\nThis work was supported by NASA under grants NNX09AC17G, NNX09AC18G, NNX14AB24G, NNX14AB25G, and NNX15AC15G, by the Peggy and Steve Fossett Foundation, and by the McDonnell Center for the Space Sciences at Washington University in St. Louis. We thank the ACE/CRIS instrument team and the ACE Science Center for providing ACE data.\n\nPublished - ICRC2019_095.pdf
", "abstract": "SuperTIGER (Trans-Iron Galactic Element Recorder) is a large-area balloon-borne instrument built to measure the galactic cosmic-ray (GCR) abundances of elements from Z=10 (Ne) through Z=56 (Ba) at energies from ~0.8 to ~10 GeV/nuc. SuperTIGER flew over Antarctica for a record-breaking 55 days, from December 8, 2012 to February 1, 2013. We will report progress on calculations of galactic cosmic ray spectra corrected to the top of the atmosphere for abundant elements between Ne and Zn from the SuperTIGER flight data. The energy spectra calculations will include up to date refinements to the energy calibrations for the acrylic and aerogel Cherenkov detectors in the instrument, and we will report on new instrument and atmospheric corrections to the top of the atmosphere for energies and abundances. \n\nHeinz and Sunyaev (2002) suggested that microquasar jets like those observed in GRS 1915+105 and GRO J1655-40 may be observable as near monoenergetic peaks in heavy ion spectra in the 3-10 GeV/nuc energy range. The large area and long flight duration of SuperTIGER is particularly suited to looking for these microquasar signatures with good statistics. We will compare our SuperTIGER spectra with ACE/CRIS and HEAO-3 spectra and with model GCR spectra solar modulated for the time period of the flight, and we will search for features that may be produced by microquasar jets.", "date": "2019-07", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20190821-073116292", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20190821-073116292", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX09AC17G" }, { "agency": "NASA", "grant_number": "NNX09AC18G" }, { "agency": "NASA", "grant_number": "NNX14AB24G" }, { "agency": "NASA", "grant_number": "NNX14AB25G" }, { "agency": "NASA", "grant_number": "NNX15AC15G" }, { "agency": "Peggy and Steve Fossett Foundation" }, { "agency": "Washington University" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "ICRC2019_095.pdf", "url": "https://authors.library.caltech.edu/records/h97fs-baa58/files/ICRC2019_095.pdf" }, "pub_year": "2019", "author_list": "Labrador, A. W.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/ngg8b-j8919", "eprint_id": 98063, "eprint_status": "archive", "datestamp": "2023-08-19 16:35:29", "lastmod": "2024-01-14 21:52:49", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Krizmanic-J-F", "name": { "family": "Krizmanic", "given": "John F." } }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "Allan W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "Richard A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "HNX/SuperTIGER Silicon Strip Detector Response to Nuclei in Lead Primary and Fragmented Test Beams", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2019 owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.\n\nPre-published on: 2019 July 22. \n\nWe thank Mark Wiedenbeck (CalTech/SRL/JPL) for the use of the silicon calibration detectors, the Rel-Labs preamplifier electronics, and the Canberra shaping amplifiers used in this beam test. We also thank Marco Ricci (INFN/Frascati) for help in obtaining electronics and supplies from the CERN electronics pool. Finally, we thank CERN for the opportunity to perform this beam test and providing exceptional particle beams.\n\nPublished - ICRC2019_094.pdf
", "abstract": "The response to 150 GeV/nuc primary lead (^(208)Pb) and fragmented (A/Z=2.4, 2.2, 2.0) beams measured a silicon strip detector, designed for use in the Heavy Nuclei eXplorer (HNX) and an upgrade of the Super Trans-Iron Galactic Element Recorder (SuperTIGER) balloon experiment, was evaluated in a CERN test beam (H8A) during Nov - Dec 2018. The 500 \u03bcm thick, single-sided silicon detectors have 32 DC-coupled strips with 3 mm pitch on the junction side with 9.6\u00d79.6 cm^2 active area. Discrete charge-preamplifiers and shaping amplifiers were used to read out the ohmic and junction side signals simultaneously using the SuperTIGER DAQ system. We report on the response in a configuration where all 32 strips were joined and read out together. The strip detector-under-test was situated \nbetween planar silicon detectors, which provided the charge selection as well as a comparison of the measured response of each detector. The combined data set shows excellent charge resolution and finely resolved elemental peaks from helium (Z=2) through lead (Z=82). In this paper, we provide a description of the test beam experiment and the results of the charge resolution analysis.", "date": "2019-07", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20190821-083554328", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20190821-083554328", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "ICRC2019_094.pdf", "url": "https://authors.library.caltech.edu/records/ngg8b-j8919/files/ICRC2019_094.pdf" }, "pub_year": "2019", "author_list": "Krizmanic, John F.; Labrador, Allan W.; et el." }, { "id": "https://authors.library.caltech.edu/records/y2zab-jyc23", "eprint_id": 97479, "eprint_status": "archive", "datestamp": "2023-08-19 16:33:24", "lastmod": "2024-01-14 21:51:11", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Elemental Source Composition Measurements and the Origin of Galactic Cosmic Rays", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2019 owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. \n\nPre-published on: 2019 July 22. \n\nThis research is supported by NASA under Grant #80NSSC18K0223.\n\nPublished - pdf
", "abstract": "We present measurements of the elemental abundances of ultra-heavy (Z>29) cosmic rays made by the CRIS instrument on NASA's ACE satellite. The data set corresponds to 7406 days of data collection from December 4, 1997 through Feb. 18, 2019. We detected a total of 1205 ultra-heavy nuclei in the charge range of Z=30-40. The charge resolution that we obtain shows essentially complete separation of the elements over this charge range. We derive preliminary source abundances from these measurements. These source abundances show that the ordering of refractory and volatile elements with atomic mass is greatly improved when compared to a mix of massive star outflow plus SN ejecta with normal ISM, rather than with only normal ISM. Additionally, in this ordering the refractory and volatile elements have similar slopes and refractory elements are preferentially accelerated by a factor of ~4. The measured abundances support a model in which cosmic ray source material is a mix of massive star outflow plus supernova ejecta and normal ISM, consistent with conclusions reached from the SuperTIGER high-altitude balloon measurements.", "date": "2019-07", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20190729-091757335", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20190729-091757335", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "80NSSC18K0223" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "pdf", "url": "https://authors.library.caltech.edu/records/y2zab-jyc23/files/pdf" }, "pub_year": "2019", "author_list": "Binns, W. R.; Israel, M. H.; et el." }, { "id": "https://authors.library.caltech.edu/records/cr3kn-9tt37", "eprint_id": 98061, "eprint_status": "archive", "datestamp": "2023-08-19 16:35:19", "lastmod": "2024-01-14 21:52:45", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Walsh-N-E", "name": { "family": "Walsh", "given": "N. E." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Murphy-R-P", "name": { "family": "Murphy", "given": "R. P." } }, { "id": "Rauch-B-F", "name": { "family": "Rauch", "given": "B. F." } }, { "id": "Ward-J-E", "name": { "family": "Ward", "given": "J. E." } }, { "id": "Brandt-T-J", "name": { "family": "Brandt", "given": "T. J." }, "orcid": "0000-0003-4087-1786" }, { "id": "Link-J-T", "name": { "family": "Link", "given": "J. T." } }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Hams-T", "name": { "family": "Hams", "given": "T." } }, { "id": "Sakai-Kenichi", "name": { "family": "Sakai", "given": "K." } }, { "id": "Sasaki-Makoto", "name": { "family": "Sasaki", "given": "M." } }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } } ] }, "title": "SuperTIGER Abundances of Galactic Cosmic-Rays for the Charge Interval Z=41-56", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2019 owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. \n\nPre-published on: 2019 July 22.\n\nPublished - ICRC2019_147.pdf
", "abstract": "On December 8, 2012 the SuperTIGER (Super Trans-Iron Galactic Element Recorder) instrument was launched from Williams Field, Antarctica on a long-duration balloon flight that lasted 55 days and maintained a mean altitude of 125,000 feet. SuperTIGER measured the relative abundances of Galactic cosmic-ray nuclei with high statistical precision and well resolved individual element peaks from Neon to Zirconium (charges Z=10-40). SuperTIGER also made exploratory measurements of the relative abundances up to Barium (Z=56). Although the statistics are low for elements heavier than Zirconium, we will show how the relative abundances of charges Z=41-56 compare to those reported by HEAO3-HNE during 1979-81. The relative abundances of elements Zirconium through Neodymium (Z=60) are of particular interest because they are likely formed both by supernova explosions and by binary neutron star mergers. A well resolved measurement of this range of elements can constrain the contributions to the Galactic cosmic-ray composition from both of these possible sources.", "date": "2019-07", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20190821-081636867", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20190821-081636867", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "ICRC2019_147.pdf", "url": "https://authors.library.caltech.edu/records/cr3kn-9tt37/files/ICRC2019_147.pdf" }, "pub_year": "2019", "author_list": "Walsh, N. E.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/eg4ca-pqa21", "eprint_id": 98060, "eprint_status": "archive", "datestamp": "2023-08-19 16:35:15", "lastmod": "2024-01-14 21:52:44", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Heikkila-B-C", "name": { "family": "Heikkila", "given": "B. C." } }, { "id": "Lai-N", "name": { "family": "Lai", "given": "N." } }, { "id": "Richardson-J-D", "name": { "family": "Richardson", "given": "J. D." }, "orcid": "0000-0003-4041-7540" } ] }, "title": "Voyager 2 Observations of the Anisotropy of Anomalous Cosmic Rays in the Heliosheath", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2019 owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. \n\nPre-published on: 2019 July 22. \n\nVoyager data analysis is supported by NASA Grant NNN12AA01C.\n\nPublished - ICRC2019_1071.pdf
", "abstract": "We have analyzed data collected from the Cosmic Ray Subsystem (CRS) instrument (Stone et al., 1977) on the Voyager 2 (V2) spacecraft during calibration manuevers for the magnetic field instrument while the spacecraft was located in the inner heliosheath of the heliosphere. We find that there is a diffusive anisotropy in the intensity of \u223c0.5-35 MeV particles (mostly protons) that indicates that there exists a diffusive flow of these particles from the flank or tail of the heliosphere towards the nose and is slightly equatorward as well. This work supports the conclusion of an earlier, similar, but more restricted study (Stone et al., 2017) that the acceleration site of anomalous cosmic rays is back along the flank or tail of the solar wind termination shock.", "date": "2019-07", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20190821-080755739", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20190821-080755739", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNN12AA01C" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "ICRC2019_1071.pdf", "url": "https://authors.library.caltech.edu/records/eg4ca-pqa21/files/ICRC2019_1071.pdf" }, "pub_year": "2019", "author_list": "Cummings, A. C.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/nbzce-7pg44", "eprint_id": 92093, "eprint_status": "archive", "datestamp": "2023-08-19 11:27:29", "lastmod": "2024-01-14 21:24:30", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Pike-S-N", "name": { "family": "Pike", "given": "Sean N." }, "orcid": "0000-0002-8403-0041" }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Burnham-J-A", "name": { "family": "Burnham", "given": "Jill A." } }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "Walter" } }, { "id": "Grefenstette-B-W", "name": { "family": "Grefenstette", "given": "Brian W." }, "orcid": "0000-0002-1984-2932" }, { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "Kristin K." }, "orcid": "0000-0003-1252-4891" }, { "id": "Miyasaka-Hiromasa", "name": { "family": "Miyasaka", "given": "Hiromasa" }, "orcid": "0000-0002-8074-4186" }, { "id": "Sanders-J-M", "name": { "family": "Sanders", "given": "Julian M." } }, { "id": "Sosanya-A-A", "name": { "family": "Sosanya", "given": "Andrew A." } } ] }, "title": "Characterization of Redlen CZT detectors for hard x-ray astronomy", "ispublished": "unpub", "full_text_status": "public", "keywords": "CZT, Redlen Technologies, X-ray detectors, NuSTAR, astronomy", "note": "\u00a9 2018 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nThis work was supported under NASA grant NNX13AC55G.\n\nPublished - 1076214.pdf
", "abstract": "We present the results of ongoing characterization of Cadmium Zinc Telluride (CZT) semiconductors produced by Redlen Technologies. In particular we hope to determine their viability for future X-ray astronomy missions such as the High Energy X-ray Probe (HEX-P). The fully fabricated hybrid detectors consist of CZT crystals with a collecting area of 2 cm \u00d7 2 cm and thickness of 3 mm mounted on a custom pixelated ASIC originally designed for the Nuclear Spectroscopic Telescope Array (NuSTAR) mission, which launched in 2012. We present the results of inter-pixel conductance and leakage current tests as well as spectral characterization using an 241Am source. Although further calibration and testing is necessary to determine the capabilities of these detectors, preliminary results indicate that Redlen CZT will be able to achieve spectral resolution and noise levels comparable to those of the CZT detectors currently in use aboard NuSTAR.", "date": "2018-09-13", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 1076214", "id_number": "CaltechAUTHORS:20190104-094928664", "isbn": "9781510620957", "book_title": "Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XX", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20190104-094928664", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX13AC55G" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" }, { "id": "NuSTAR" }, { "id": "Astronomy-Department" } ] }, "contributors": { "items": [ { "id": "Payne-S-A", "name": { "family": "Payne", "given": "Stephen A." } }, { "id": "James-R-B", "name": { "family": "James", "given": "Ralph B." } }, { "id": "Burger-A", "name": { "family": "Burger", "given": "Arnold" } }, { "id": "Fiederle-M", "name": { "family": "Fiederle", "given": "Michael" } } ] }, "doi": "10.1117/12.2321990", "primary_object": { "basename": "1076214.pdf", "url": "https://authors.library.caltech.edu/records/nbzce-7pg44/files/1076214.pdf" }, "pub_year": "2018", "author_list": "Pike, Sean N.; Harrison, Fiona A.; et el." }, { "id": "https://authors.library.caltech.edu/records/e0ft1-rpj02", "eprint_id": 91582, "eprint_status": "archive", "datestamp": "2023-08-19 11:01:49", "lastmod": "2024-01-14 21:16:24", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Grefenstette-B-W", "name": { "family": "Grefenstette", "given": "Brian W." }, "orcid": "0000-0002-1984-2932" }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. Rick" } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Kitaguchi-Takao", "name": { "family": "Kitaguchi", "given": "Takao" } }, { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "Kristin K." }, "orcid": "0000-0003-1252-4891" }, { "id": "Miyasaka-Hiromasa", "name": { "family": "Miyasaka", "given": "Hiromasa" }, "orcid": "0000-0002-8074-4186" }, { "id": "Pike-S-N", "name": { "family": "Pike", "given": "Sean N." }, "orcid": "0000-0002-8403-0041" } ] }, "title": "Pushing the limits of the NuSTAR detectors", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2018 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nBG acknowledges valuable conversations with W. Rick Cook and Jill Burhnam during the development of this paper. This work was supported under NASA Contract No. NNG08FD60C, and made use of data from the NuS-TAR mission, a project led by the California Institute of Technology, managed by the Jet Propulsion Laboratory, and funded by the National Aeronautics and Space Administration. This work makes use of open source code produced by the community, including Astropy, a community-developed core Python package for Astronomy (Astropy Collaboration, 2018) and the SciPy ecosystem. All graphics were produced using Veusz, Copyright (C) 2003-2018 Jeremy Sanders and contributors.\n\nPublished - 107092V.pdf
", "abstract": "NuSTAR (the Nuclear Spectroscopic Telescope ARray) is a NASA Small Explorer (SMEX) mission launched in June of 2012. Since its launch, NuSTAR has been the preeminent instrument for spectroscopic analysis of the hard X-ray sky over the 3-80 keV bandpass. The low energy side of the bandpass is limited by the absorption along the photon path as well as by the ability of the pixels to trigger on incident photons. The on-board calibration source does not have a low-energy line that we can use to calibrate this part of the response, so instead we use the \"nearest-neighbor\" readout in the NuSTAR detector architecture to calibrate the individual pixel thresholds for all 8 flight detectors on both focal plane modules (FPMs). These threshold measurements feed back into the quantum efficiency of the detectors at low (<5 keV) energies and, once well-calibrated, may allow the use of NuSTAR data below the current 3 keV limit.", "date": "2018-08-09", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 107092V", "id_number": "CaltechAUTHORS:20181207-145745237", "isbn": "9781510619715", "book_title": "High Energy, Optical, and Infrared Detectors for Astronomy VIII", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20181207-145745237", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG08FD60C" }, { "agency": "NASA/JPL/Caltech" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" }, { "id": "NuSTAR" }, { "id": "Astronomy-Department" } ] }, "contributors": { "items": [ { "id": "Holland-A-D", "name": { "family": "Holland", "given": "Andrew D." } }, { "id": "Beletic-J", "name": { "family": "Beletic", "given": "James" } } ] }, "doi": "10.1117/12.2312844", "primary_object": { "basename": "107092V.pdf", "url": "https://authors.library.caltech.edu/records/e0ft1-rpj02/files/107092V.pdf" }, "pub_year": "2018", "author_list": "Grefenstette, Brian W.; Cook, W. Rick; et el." }, { "id": "https://authors.library.caltech.edu/records/kxgh5-n1e97", "eprint_id": 88360, "eprint_status": "archive", "datestamp": "2023-08-19 11:00:21", "lastmod": "2024-01-14 20:31:33", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Pike-S-N", "name": { "family": "Pike", "given": "Sean N." }, "orcid": "0000-0002-8403-0041" }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Burnham-J-A", "name": { "family": "Burnham", "given": "Jill A." } }, { "id": "Cook-W-W", "name": { "family": "Cook", "given": "Walter W." } }, { "id": "Grefenstette-B-W", "name": { "family": "Grefenstette", "given": "Brian W." }, "orcid": "0000-0002-1984-2932" }, { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "Kristin K." }, "orcid": "0000-0003-1252-4891" }, { "id": "Miyasaka-Hiromasa", "name": { "family": "Miyasaka", "given": "Hiromasa" }, "orcid": "0000-0002-8074-4186" } ] }, "title": "Characterization of Redlen CZT detectors for x-ray astronomy", "ispublished": "unpub", "full_text_status": "public", "keywords": "CZT, Redlen Technologies, X-ray detectors, NuSTAR, astronomy", "note": "\u00a9 2018 Society of Photo-optical Instrumentation Engineers (SPIE). \n\nThis research was funded by NASA grant NNX13AC55G.\n\nPublished - 107091D.pdf
", "abstract": "We present the results of ongoing characterization of Cadmium Zinc Telluride (CZT) semiconductors produced by Redlen Technologies for use in X-ray astronomy. The fully fabricated hybrid detectors consist of CZT crystals with a collecting area of 2 cm x 2 cm and thickness of 3mm mounted on a custom ASIC originally designed for the Nuclear Spectroscopic Telescope Array (NuSTAR) mission, which launched in 2012. We present the results of electronic noise, inter-pixel conductance, and leakage current tests as well as spectral calibration using an ^(241)Am source. Despite high electronic noise due to errors in fabrication, we are able to compare characteristics of the Redlen CZT detectors to those of the CZT detectors produced by eV Products aboard NuSTAR.", "date": "2018-08-07", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 107091D", "id_number": "CaltechAUTHORS:20180730-135455343", "isbn": "9781510619715", "book_title": "High Energy, Optical, and Infrared Detectors for Astronomy VIII", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180730-135455343", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX13AC55G" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" }, { "id": "Astronomy-Department" } ] }, "contributors": { "items": [ { "id": "Holland-A-D", "name": { "family": "Holland", "given": "Andrew D." } }, { "id": "Beletic-J", "name": { "family": "Beletic", "given": "James" } } ] }, "doi": "10.1117/12.2313860", "primary_object": { "basename": "107091D.pdf", "url": "https://authors.library.caltech.edu/records/kxgh5-n1e97/files/107091D.pdf" }, "pub_year": "2018", "author_list": "Pike, Sean N.; Harrison, Fiona A.; et el." }, { "id": "https://authors.library.caltech.edu/records/jgbnh-1mt76", "eprint_id": 88373, "eprint_status": "archive", "datestamp": "2023-08-19 10:21:36", "lastmod": "2024-01-14 20:31:52", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Ptak-A", "name": { "family": "Ptak", "given": "Andrew F." }, "orcid": "0000-0001-5655-1440" }, { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "Kristin K." }, "orcid": "0000-0003-1252-4891" } ] }, "title": "Arcus: The X-ray Grating Spectrometer Explorer", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2018 Society of Photo-optical Instrumentation Engineers (SPIE).", "abstract": "Arcus, a Medium Explorer (MIDEX) mission, was selected by NASA for a Phase A study in August 2017. The observatory provides high-resolution soft X-ray spectroscopy in the 12-50 \u00c5 bandpass with unprecedented sensitivity: effective areas of >350 cm^2 and spectral resolution >2500 at the energies of O VII and O VIII for z=0-0.3. The Arcus key science goals are (1) to measure the effects of structure formation imprinted upon the hot baryons that are predicted to lie in extended halos around galaxies, groups, and clusters, (2) to trace the propagation of outflowing mass, energy, and momentum from the vicinity of the black hole to extragalactic scales as a measure of their feedback and (3) to explore how stars, circumstellar disks and exoplanet atmospheres form and evolve. Arcus relies upon the same 12m focal length grazing-incidence silicon pore X-ray optics (SPO) that ESA has developed for the Athena mission; the focal length is achieved on orbit via an extendable optical bench. The focused X-rays from these optics are diffracted by high-efficiency Critical-Angle Transmission (CAT) gratings, and the results are imaged with flight-proven CCD detectors and electronics. The power and telemetry requirements on the spacecraft are modest. Arcus will be launched into an ~ 7 day 4:1 lunar resonance orbit, resulting in high observing efficiency, low particle background and a favorable thermal environment. Mission operations are straightforward, as most observations will be long (~100 ksec), uninterrupted, and pre-planned. The baseline science mission will be completed in <2 years, although the margin on all consumables allows for 5+ years of operation.", "date": "2018-07-10", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 1069926", "id_number": "CaltechAUTHORS:20180731-102004948", "isbn": "9781510619517", "book_title": "Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180731-102004948", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "den Herder-J-W-A", "name": { "family": "den Herder", "given": "Jan-Willem A." } }, { "id": "Nikzad-S", "name": { "family": "Nikzad", "given": "Shouleh" } }, { "id": "Nakazawa-Kazuhiro", "name": { "family": "Nakazawa", "given": "Kazuhiro" } } ] }, "doi": "10.1117/12.2313965", "pub_year": "2018", "author_list": "Ptak, Andrew F. and Madsen, Kristin K." }, { "id": "https://authors.library.caltech.edu/records/2we98-8d731", "eprint_id": 88364, "eprint_status": "archive", "datestamp": "2023-08-19 10:14:37", "lastmod": "2024-01-14 20:31:38", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "Kristin K." }, "orcid": "0000-0003-1252-4891" }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "F. E." }, "orcid": "0000-0001-5679-1946" }, { "id": "Grefenstette-B-W", "name": { "family": "Grefenstette", "given": "B." }, "orcid": "0000-0002-1984-2932" }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Hornschemeier-A-E", "name": { "family": "Hornschemeier", "given": "Ann" }, "orcid": "0000-0001-8667-2681" }, { "id": "Miyasaka-Hiromasa", "name": { "family": "Miyasaka", "given": "H." }, "orcid": "0000-0002-8074-4186" }, { "id": "Okajima-Takashi", "name": { "family": "Okajima", "given": "T." } }, { "id": "Pike-S-N", "name": { "family": "Pike", "given": "S." }, "orcid": "0000-0002-8403-0041" }, { "id": "Saha-T-T", "name": { "family": "Saha", "given": "T." } }, { "id": "Zhang-W-W", "name": { "family": "Zhang", "given": "W." }, "orcid": "0000-0002-1426-9698" }, { "id": "Pivovaroff-M-J", "name": { "family": "Pivovaroff", "given": "M." } }, { "id": "Vogel-J-K", "name": { "family": "Vogel", "given": "J." } }, { "id": "Descalle-M-A", "name": { "family": "Descalle", "given": "M." } }, { "id": "Broadway-D-M", "name": { "family": "Broadway", "given": "D." } }, { "id": "Gurgew-D", "name": { "family": "Gurgew", "given": "D." } }, { "id": "Stern-D", "name": { "family": "Stern", "given": "D." }, "orcid": "0000-0003-2686-9241" }, { "id": "Ferreira-D", "name": { "family": "Ferreira", "given": "Desiree" }, "orcid": "0000-0003-3243-9774" }, { "id": "Windt-D-L", "name": { "family": "Windt", "given": "D." } } ] }, "title": "Optical instrument design of the high-energy x-ray probe (HEX-P)", "ispublished": "unpub", "full_text_status": "public", "keywords": "HEX-P, X-ray, Satellite", "note": "\u00a9 2018 Society of Photo-optical Instrumentation Engineers (SPIE).\n\nPublished - 106996M.pdf
", "abstract": "The High-Energy X-ray Probe (HEX-P) is a probe-class next-generation high-energy X-ray mission concept that will vastly extend the reach of broadband X-ray observations. Studying the 2-200 keV energy range, HEXP has 40 times the sensitivity of any previous mission in the 10-80 keV band, and will be the first focusing instrument in the 80-200 keV band. A successor to the Nuclear Spectroscopic Telescope Array (NuSTAR), a NASA Small Explorer launched in 2012, HEX-P addresses key NASA science objectives, and will serve as an important complement to ESA's L-class Athena mission. HEX-P will utilize multilayer coated X-ray optics, and in this paper we present the details of the optical design, and discuss the multilayer prescriptions necessary for the reflection of hard X-ray photons. We consider multiple module designs with the aim of investigating the tradeoff between high- and low-energy effective area, and review the technology development necessary to reach that goal within the next decade.", "date": "2018-07-06", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 106996M", "id_number": "CaltechAUTHORS:20180730-154711488", "isbn": "9781510619517", "book_title": "Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180730-154711488", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" }, { "id": "Astronomy-Department" } ] }, "contributors": { "items": [ { "id": "den-Herder-J-W-A", "name": { "family": "den Herder", "given": "Jan-Willem A." } }, { "id": "Nikzad-S", "name": { "family": "Nikzad", "given": "Shouleh" } }, { "id": "Nakazawa-Kazuhiro", "name": { "family": "Nakazawa", "given": "Kazuhiro" } } ] }, "doi": "10.1117/12.2314117", "primary_object": { "basename": "106996M.pdf", "url": "https://authors.library.caltech.edu/records/2we98-8d731/files/106996M.pdf" }, "pub_year": "2018", "author_list": "Madsen, Kristin K.; Christensen, F. E.; et el." }, { "id": "https://authors.library.caltech.edu/records/yqp1f-db065", "eprint_id": 88367, "eprint_status": "archive", "datestamp": "2023-08-19 10:14:47", "lastmod": "2024-01-14 20:31:45", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Madsen-Kristin-K", "name": { "family": "Madsen", "given": "Kristin K." }, "orcid": "0000-0003-1252-4891" }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "Walter R." } }, { "id": "Forster-Karl", "name": { "family": "Forster", "given": "Karl" }, "orcid": "0000-0001-5800-5531" }, { "id": "Grefenstette-Brian-W", "name": { "family": "Grefenstette", "given": "Brian W." }, "orcid": "0000-0002-1984-2932" }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Miyasaka-Hiromasa", "name": { "family": "Miyasaka", "given": "Hiromasa" }, "orcid": "0000-0002-8074-4186" }, { "id": "Pike-Sean-N", "name": { "family": "Pike", "given": "Sean N." }, "orcid": "0000-0002-8403-0041" } ] }, "title": "Effective area calibration of the nuclear spectroscopic telescope array (NuSTAR)", "ispublished": "unpub", "full_text_status": "public", "keywords": "NuSTAR, X-ray, Satellite", "note": "\u00a9 2018 Society of Photo-optical Instrumentation Engineers (SPIE).\n\nPublished - 106991W.pdf
", "abstract": "The Nuclear Spectroscopic Telescope ARray (NuSTAR) has been in orbit for 6 years, and with the calibration data accumulated over that period we have taken a new look at the effective area calibration. The NuSTAR 10-m focal length is achieved using an extendible mast, which flexes due to solar illumination. This results in individual observations sampling a range of off-axis angles rather than a particular off-axis angle. In our new approach, we have split over 50 individual Crab observations into segments at particular off-axis angles. We combine segments from different observations at the same off-axis angle to generate a new set of synthetic spectra, which we use to calibrate the vignetting function of the optics against the canonical Crab spectrum.", "date": "2018-07-06", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 106991W", "id_number": "CaltechAUTHORS:20180731-083456479", "isbn": "9781510619517", "book_title": "Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180731-083456479", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "NuSTAR" }, { "id": "Space-Radiation-Laboratory" }, { "id": "Astronomy-Department" } ] }, "contributors": { "items": [ { "id": "den-Herder-Jan-Willem-A", "name": { "family": "den Herder", "given": "Jan-Willem A." } }, { "id": "Nikzad-Shouleh", "name": { "family": "Nikzad", "given": "Shouleh" } }, { "id": "Nakazawa-Kazuhiro", "name": { "family": "Nakazawa", "given": "Kazuhiro" } } ] }, "doi": "10.1117/12.2313675", "primary_object": { "basename": "106991W.pdf", "url": "https://authors.library.caltech.edu/records/yqp1f-db065/files/106991W.pdf" }, "pub_year": "2018", "author_list": "Madsen, Kristin K.; Cook, Walter R.; et el." }, { "id": "https://authors.library.caltech.edu/records/by17a-k3a44", "eprint_id": 86449, "eprint_status": "archive", "datestamp": "2023-08-19 05:52:23", "lastmod": "2023-10-18 19:36:27", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Carrasco-Casado-A", "name": { "family": "Carrasco-Casado", "given": "Alberto" }, "orcid": "0000-0002-3412-7945" }, { "id": "Biswas-A", "name": { "family": "Biswas", "given": "Abhijit" } }, { "id": "Fields-R", "name": { "family": "Fields", "given": "Renny" } }, { "id": "Grefenstette-B-W", "name": { "family": "Grefenstette", "given": "Brian" }, "orcid": "0000-0002-1984-2932" }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona" }, "orcid": "0000-0003-2992-8024" }, { "id": "Sburlan-S", "name": { "family": "Sburlan", "given": "Suzana" } }, { "id": "Toyoshima-Morio", "name": { "family": "Toyoshima", "given": "Morio" } } ] }, "title": "Optical communication on CubeSats \u2014 Enabling the next era in space science", "ispublished": "unpub", "full_text_status": "public", "keywords": "lasercom, smallsat, cubesat, LEO, crosslink, intersatellite, deep space, KISS", "note": "\u00a9 2017 IEEE. \n\nThis work was supported in part by the W. M. Keck Institute for Space Studies [33]. The authors also want to thank all the participants of the two workshops: Krisjani Angkasa (JPL), Alessandra Babuscia (JPL), Derek Barnes (MIT), Kerri Cahoy (MIT), Amir Caspi (SwRI), Emily Clements (MIT), Sam Dolinar (JPL), Peter Goorjian (NASA), Varoujan Gorjian (JPL), Brian Gunter (Georgia Institute of Technology), Frank Heine (Tesat Spacecom), Travis Imken (JPL), Farzana Khatri (MIT), Maxim Khatsenko (MIT), Ryan Kingsbury (Planet Labs), Jonathan Klamkin (UC Santa Barbara), David Klumpar (Montana State University), Michael Krainak (NASA), Michael K\u00fceppers (ESA), Joe Kusters (JPL), Myron Lee (MIT), Rachel Morgan (MIT), Dhack Muthulingam (JPL), Michael Peng (JPL), Sean Pike (Caltech), Joseph Riedel (JPL), Kathleen Riesing (MIT), Bryan Robinson (MIT), Darren Rowen (The Aerospace Corp.), Joel Shields (JPL), Harlan Spence (University of New Hampshire), Mark Storm (Fibertek Inc.), Jan Stupl (SGT/NASA), Jose Velazco (JPL) and Hua Xie (JPL).\n\nSubmitted - 1811.03413.pdf
", "abstract": "CubeSats are excellent platforms to rapidly perform simple space experiments. Several hundreds of CubeSats have already been successfully launched in the past few years and the number of announced launches grows every year. These platforms provide an easy access to space for universities and organizations which otherwise could not afford it. However, these spacecraft still rely on RF communications, where the spectrum is already crowded and cannot support the growing demand for data transmission to the ground. Lasercom holds the promise to be the solution to this problem, with a potential improvement of several orders of magnitude in the transmission capacity, while keeping a low size, weight and power. Between 2016 and 2017, The Keck Institute for Space Studies (KISS), a joint institute of the California Institute of Technology and the Jet Propulsion Laboratory, brought together a group of space scientists and lasercom engineers to address the current challenges that this technology faces, in order to enable it to compete with RF and eventually replace it when high-data rate is needed. After two one-week workshops, the working group started developing a report addressing three study cases: low Earth orbit, crosslinks and deep space. This paper presents the main points and conclusions of these KISS workshops.", "date": "2017-11", "date_type": "published", "publisher": "IEEE", "place_of_pub": "Piscataway, NJ", "pagerange": "46-52", "id_number": "CaltechAUTHORS:20180518-103130720", "isbn": "978-1-5090-6511-0", "book_title": "2017 IEEE International Conference on Space Optical Systems and Applications (ICSOS)", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180518-103130720", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Keck Institute for Space Studies (KISS)" } ] }, "local_group": { "items": [ { "id": "Keck-Institute-for-Space-Studies" }, { "id": "Space-Radiation-Laboratory" }, { "id": "Astronomy-Department" } ] }, "doi": "10.1109/ICSOS.2017.8357210", "primary_object": { "basename": "1811.03413.pdf", "url": "https://authors.library.caltech.edu/records/by17a-k3a44/files/1811.03413.pdf" }, "pub_year": "2017", "author_list": "Carrasco-Casado, Alberto; Biswas, Abhijit; et el." }, { "id": "https://authors.library.caltech.edu/records/69cen-dtb89", "eprint_id": 84177, "eprint_status": "archive", "datestamp": "2023-08-19 05:09:32", "lastmod": "2024-01-14 19:15:51", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hong-Jaesub", "name": { "family": "Hong", "given": "Jaesub" } }, { "id": "Allen-B", "name": { "family": "Allen", "given": "Branden" } }, { "id": "Grindlay-J-E", "name": { "family": "Grindlay", "given": "Jonathan" }, "orcid": "0000-0002-1323-5314" }, { "id": "Miyasaka-Hiromasa", "name": { "family": "Miyasaka", "given": "Hiromasa" }, "orcid": "0000-0002-8074-4186" }, { "id": "Burnham-J-A", "name": { "family": "Burnham", "given": "Jill" } }, { "id": "Hong-Sankgi", "name": { "family": "Hong", "given": "Sankgi" } }, { "id": "Lei-Wesker", "name": { "family": "Lei", "given": "Wesker" } }, { "id": "Barthelmy-S-D", "name": { "family": "Barthelmy", "given": "Scott" } }, { "id": "Patti-R", "name": { "family": "Patti", "given": "Robert" } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona" }, "orcid": "0000-0003-2992-8024" } ] }, "title": "Through-Silicon-Vias (TSVs) for 3D readout of ASIC for nearly gapless CdZnTe detector arrays", "ispublished": "unpub", "full_text_status": "public", "keywords": "Coded-aperture imaging, X-ray survey, Gamma-ray Burst, CdZnTe detectors", "note": "\u00a9 2017 Society of Photo-Optical Instrumentation Engineers (SPIE).\n\nPublished - 103920U.pdf
", "abstract": "Wirebonds, although proven for space application and perceived necessary for hybrid sensors like CdZnTe (CZT) detectors, introduce assembly complexity and undesirable gaps between detector units. Thus, they pose a serious challenge in building a low cost large area detector. We are developing Through-Silicon Vias (TSVs) to make all connections (both power and data) through ASICs, which will eliminate wirebonds and enable simple direct flip-chip bonding between the ASIC and a substrate electronics layer. TSVs also enable a more compact layout of the ASIC, which reduces the inactive area of the detector plane, and thus enables nearly gaplessly tilable detector arrays. We demonstrate the first successful TSV implementation on ASICs used for CZT detectors onboard the Nuclear Spectroscopic Telescope Array (NuSTAR) mission as part of our program to develop large area CZT imagers for wide field coded aperture imaging.", "date": "2017-09-15", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "id_number": "CaltechAUTHORS:20180108-153821651", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180108-153821651", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" }, { "id": "NuSTAR" }, { "id": "Astronomy-Department" } ] }, "contributors": { "items": [ { "id": "Burger-A", "name": { "family": "Burger", "given": "Arnold" } }, { "id": "James-R-B", "name": { "family": "James", "given": "Ralph B." } }, { "id": "Fiederle-M", "name": { "family": "Fiederle", "given": "Michael" } }, { "id": "Franks-L", "name": { "family": "Franks", "given": "Larry" } }, { "id": "Payne-S-A", "name": { "family": "Payne", "given": "Stephen A." } } ] }, "doi": "10.1117/12.2274360", "primary_object": { "basename": "103920U.pdf", "url": "https://authors.library.caltech.edu/records/69cen-dtb89/files/103920U.pdf" }, "pub_year": "2017", "author_list": "Hong, Jaesub; Allen, Branden; et el." }, { "id": "https://authors.library.caltech.edu/records/ce9q0-djr80", "eprint_id": 84175, "eprint_status": "archive", "datestamp": "2023-08-19 04:47:11", "lastmod": "2024-01-14 19:15:47", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Grefenstette-B-W", "name": { "family": "Grefenstette", "given": "Brian W." }, "orcid": "0000-0002-1984-2932" }, { "id": "Bhalerao-V-B", "name": { "family": "Bhalerao", "given": "Varun" }, "orcid": "0000-0002-6112-7609" }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. Rick" } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Kitaguchi-Takao", "name": { "family": "Kitaguchi", "given": "Takao" } }, { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "Kristin K." }, "orcid": "0000-0003-1252-4891" }, { "id": "Mao-Peter-H", "name": { "family": "Mao", "given": "Peter H." } }, { "id": "Miyasaka-Hiromasa", "name": { "family": "Miyasaka", "given": "Hiromasa" }, "orcid": "0000-0002-8074-4186" }, { "id": "Rana-V-R", "name": { "family": "Rana", "given": "Vikram" }, "orcid": "0000-0003-1703-8796" } ] }, "title": "Ground calibration of the spatial response and quantum efficiency of the CdZnTe hard x-ray detectors for NuSTAR", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2017 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nThis work was supported under NASA Contract No. NNG08FD60C, and made use of data from the NuSTAR mission, a project led by the California Institute of Technology, managed by the Jet Propulsion Laboratory, and funded by the National Aeronautics and Space Administration.\n\nPublished - 1039207.pdf
", "abstract": "Pixelated Cadmium Zinc Telluride (CdZnTe) detectors are currently flying on the Nuclear Spectroscopic Telescope ARray (NuSTAR) NASA Astrophysics Small Explorer. While the pixel pitch of the detectors is \u2248 605 \u03bcm, we can leverage the detector readout architecture to determine the interaction location of an individual photon to much higher spatial accuracy. The sub-pixel spatial location allows us to finely oversample the point spread function of the optics and reduces imaging artifacts due to pixelation. In this paper we demonstrate how the sub-pixel information is obtained, how the detectors were calibrated, and provide ground verification of the quantum efficiency of our Monte Carlo model of the detector response.", "date": "2017-08-29", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "id_number": "CaltechAUTHORS:20180108-151123343", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180108-151123343", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG08FD60C" }, { "agency": "NASA/JPL/Caltech" } ] }, "local_group": { "items": [ { "id": "NuSTAR" }, { "id": "Space-Radiation-Laboratory" }, { "id": "Astronomy-Department" } ] }, "contributors": { "items": [ { "id": "Burger-A", "name": { "family": "Burger", "given": "Arnold" } }, { "id": "James-R-B", "name": { "family": "James", "given": "Ralph B." } }, { "id": "Fiederle-M", "name": { "family": "Fiederle", "given": "Michael" } }, { "id": "Franks-L", "name": { "family": "Franks", "given": "Larry" } }, { "id": "Payne-S-A", "name": { "family": "Payne", "given": "Stephen A." } } ] }, "doi": "10.1117/12.2271365", "primary_object": { "basename": "1039207.pdf", "url": "https://authors.library.caltech.edu/records/ce9q0-djr80/files/1039207.pdf" }, "pub_year": "2017", "author_list": "Grefenstette, Brian W.; Bhalerao, Varun; et el." }, { "id": "https://authors.library.caltech.edu/records/zbr1b-stc87", "eprint_id": 84178, "eprint_status": "archive", "datestamp": "2023-08-19 04:47:16", "lastmod": "2024-01-14 19:15:53", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Smith-R-K", "name": { "family": "Smith", "given": "R. K." } }, { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "K. K." }, "orcid": "0000-0003-1252-4891" } ] }, "title": "Arcus: exploring the formation and evolution of clusters, galaxies, and stars", "ispublished": "unpub", "full_text_status": "public", "keywords": "Gratings, X-rays: spectroscopy, Instrumentation", "note": "\u00a9 2017 Society of Photo-Optical Instrumentation Engineers (SPIE). n\n\nThe research leading to these results has in part received funding from the Smithsonian Astrophysical Observatory and the European Union's Horizon 2020 Program under the AHEAD project (grant agreement n. 654215). The Arcus team especially thanks the team at NASA's Marshall Space Flight Center's Stray Light Center for hosting the SPO and CAT testing, including substantial assistance with the data collection and analysis.\n\nPublished - 103970Q.pdf
", "abstract": "Arcus, a Medium Explorer (MIDEX) mission, was selected by NASA for a Phase A study in August 2017. The observatory provides high-resolution soft X-ray spectroscopy in the 12-50\u00c5 bandpass with unprecedented sensitivity: effective areas of >450 cm^2 and spectral resolution >2500. The Arcus key science goals are (1) to measure the effects of structure formation imprinted upon the hot baryons that are predicted to lie in extended halos around galaxies, groups, and clusters, (2) to trace the propagation of outflowing mass, energy, and momentum from the vicinity of the black hole to extragalactic scales as a measure of their feedback and (3) to explore how stars, circumstellar disks and exoplanet atmospheres form and evolve. Arcus relies upon the same 12m focal length grazing-incidence silicon pore X-ray optics (SPO) that ESA has developed for the Athena mission; the focal length is achieved on orbit via an extendable optical bench. The focused X-rays from these optics are diffracted by high-efficiency Critical-Angle Transmission (CAT) gratings, and the results are imaged with flight-proven CCD detectors and electronics. The power and telemetry requirements on the spacecraft are modest. Mission operations are straightforward, as most observations will be long (~100 ksec), uninterrupted, and pre-planned, although there will be capabilities to observe sources such as tidal disruption events or supernovae with a ~3 day turnaround. Following the 2nd year of operation, Arcus will transition to a proposal-driven guest observatory facility.", "date": "2017-08-29", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "id_number": "CaltechAUTHORS:20180108-154902629", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180108-154902629", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Smithsonian Astrophysical Observatory" }, { "agency": "European Research Council (ERC)", "grant_number": "654215" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Siegmund-O-H-W", "name": { "family": "Siegmund", "given": "Oswald H." } } ] }, "doi": "10.1117/12.2272818", "primary_object": { "basename": "103970Q.pdf", "url": "https://authors.library.caltech.edu/records/zbr1b-stc87/files/103970Q.pdf" }, "pub_year": "2017", "author_list": "Smith, R. K. and Madsen, K. K." }, { "id": "https://authors.library.caltech.edu/records/xw82e-4sc41", "eprint_id": 84003, "eprint_status": "archive", "datestamp": "2023-08-21 21:38:14", "lastmod": "2024-01-14 19:15:39", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Smith-R-K", "name": { "family": "Smith", "given": "R. K." } }, { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "K. K." }, "orcid": "0000-0003-1252-4891" } ] }, "title": "Arcus: The X-ray Grating Spectrometer Explorer", "ispublished": "unpub", "full_text_status": "public", "keywords": "Gratings; X-rays: spectroscopy; Instrumentation", "note": "\u00a9 2017 SPIE. \n\nThe research leading to these results has in part received funding from the Smithsonian Astrophysical Observatory and the European Union's Horizon 2020 Program under the AHEAD project (grant agreement n. 654215). The Arcus team especially thanks the team at NASA's Marshall Space Flight Center's Stray Light Center for hosting the SPO and CAT testing, including substantial assistance with the data collection and analysis.\n\nPublished - 103970Q.pdf
", "abstract": "Arcus, a Medium Explorer (MIDEX) mission, was selected by NASA for a Phase A study in August 2017. The observatory provides high-resolution soft X-ray spectroscopy in the 12-50\u00c5 bandpass with unprecedented sensitivity: effective areas of >450 cm^2 and spectral resolution >2500. The Arcus key science goals are (1) to measure the effects of structure formation imprinted upon the hot baryons that are predicted to lie in extended halos around galaxies, groups, and clusters, (2) to trace the propagation of outflowing mass, energy, and momentum from the vicinity of the black hole to extragalactic scales as a measure of their feedback and (3) to explore how stars, circumstellar disks and exoplanet atmospheres form and evolve. Arcus relies upon the same 12m focal length grazing-incidence silicon pore X-ray optics (SPO) that ESA has developed for the Athena mission; the focal length is achieved on orbit via an extendable optical bench. The focused X-rays from these optics are diffracted by high-efficiency Critical-Angle Transmission (CAT) gratings, and the results are imaged with flight-proven CCD detectors and electronics. The power and telemetry requirements on the spacecraft are modest. Mission operations are straightforward, as most observations will be long (~100 ksec), uninterrupted, and pre-planned, although there will be capabilities to observe sources such as tidal disruption events or supernovae with a ~3 day turnaround. Following the 2nd year of operation, Arcus will transition to a proposal-driven guest observatory facility.", "date": "2017-08-29", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 103970Q", "id_number": "CaltechAUTHORS:20171221-130042990", "isbn": "978-1-5106-1252-5", "book_title": "UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XX", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20171221-130042990", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Smithsonian Astrophysical Observatory" }, { "agency": "European Research Council (ERC)", "grant_number": "654215" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Siegmund-O-H-W", "name": { "family": "Siegmund", "given": "Oswald H." } } ] }, "doi": "10.1117/12.2272818", "primary_object": { "basename": "103970Q.pdf", "url": "https://authors.library.caltech.edu/records/xw82e-4sc41/files/103970Q.pdf" }, "pub_year": "2017", "author_list": "Smith, R. K. and Madsen, K. K." }, { "id": "https://authors.library.caltech.edu/records/gasw7-5j711", "eprint_id": 89232, "eprint_status": "archive", "datestamp": "2023-08-19 04:00:19", "lastmod": "2024-01-14 20:43:03", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Heikkila-B-C", "name": { "family": "Heikkila", "given": "B. C." } }, { "id": "Lal-Nand", "name": { "family": "Lal", "given": "N." } }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "Anisotropy of Anomalous Cosmic Rays Observed by Voyager 2 in the Heliosheath", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. \n\nWe thank J. Richardson for providing the V2 PLS data. Voyager data analysis is supported by NASA Grant NNN12AA01C.\n\nPublished - ICRC2017_057.pdf
", "abstract": "Voyager 2 (V2) has been observing anomalous cosmic rays (ACRs) in the heliosheath since August 2007 when V2 crossed the termination shock of the supersonic solar wind. We use the counting rate of ~0.5-35 MeV protons collected during periods when the spacecraft was rolling about the axis pointed to the Earth to infer their direction of flow. The observed flow velocity is the combination of the flow due to motion of heliosheath plasma and a diffusive flow due to a gradient in the ACR intensity. The latitudinal component of the flow (N component) agrees with the convective flow due to the heliospheric plasma flow as determined by the plasma instrument on V2. However, the tangential component of the flow (T component) is smaller than the predicted convective flow, consistent with an intensity gradient in the +T direction and a diffusive flow of ACRs from a source located in the +T direction. This would be consistent with models predicting that the acceleration of higher energy ACRs occurs along the flanks or tail of the heliosphere. A similar result was obtained by analysis of the V1 magrol data during V1's journey through the heliosheath [1].", "date": "2017-07", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20180828-122924831", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180828-122924831", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNN12AA01C" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.22323/1.301.0057", "primary_object": { "basename": "ICRC2017_057.pdf", "url": "https://authors.library.caltech.edu/records/gasw7-5j711/files/ICRC2017_057.pdf" }, "pub_year": "2017", "author_list": "Stone, E. C.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/7bw79-21415", "eprint_id": 89245, "eprint_status": "archive", "datestamp": "2023-08-19 04:00:34", "lastmod": "2024-01-14 20:43:35", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Magnetic Fluctuations and Peculiar Anisotropy Oscillations in the 23 July 2012 SEP Event", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. \n\nThis work was supported by the National Aeronautics and Space Administration (NASA) at the California Institute of Technology and the Jet Propulsion Laboratory under sub-contract 00008864 from the University of California at Berkeley under NASA grant NNX15AG09G. We thank the STEREO/MAG team for making their data publicly available, and we thank Andrew Davis and Chris Russell for help in understanding the LET and MAG data timetags.\n\nPublished - ICRC2017_144.pdf
", "abstract": "The pitch-angle distributions of solar energetic particles (SEPs) provide a wealth of information about particle transport through interplanetary space, and depend on the magnetic field strength, topology, and turbulence at remote heliospheric locations. The Low Energy Telescope (LET) on STEREO measures angular distributions in the ecliptic for SEP ions from protons to iron with energies of about 2--12 MeV/nucleon. At the onset of the 23 July 2012 extreme SEP event, a beamed distribution was observed at STEREO-Ahead using LET. We have previously reported apparent \"oscillations\" in the pitch-angle width of this beam when using simultaneous particle and magnetic field measurements at a 1-minute cadence. We have now determined that this behavior is largely a result of the effects of magnetic turbulence on the calculated particle pitch angle distributions. The locally measured magnetic field direction varies relatively rapidly, while the energetic particle distribution is governed by magnetic fields averaged over much larger spatial and temporal scales than represented by solar wind measurements at the same cadence. Similar behavior in earlier events has been reported by others and analyzed in the framework of quasilinear theory.", "date": "2017-07", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20180828-122926202", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180828-122926202", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA/JPL/Caltech" }, { "agency": "NASA", "grant_number": "00008864" }, { "agency": "NASA", "grant_number": "NNX15AG09G" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.22323/1.301.0144", "primary_object": { "basename": "ICRC2017_144.pdf", "url": "https://authors.library.caltech.edu/records/7bw79-21415/files/ICRC2017_144.pdf" }, "pub_year": "2017", "author_list": "Leske, R. A.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/5t0q6-hy404", "eprint_id": 89241, "eprint_status": "archive", "datestamp": "2023-08-19 04:00:24", "lastmod": "2024-01-14 20:43:24", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Walsh-N-E", "name": { "family": "Walsh", "given": "N. E." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Murphy-R-P", "name": { "family": "Murphy", "given": "R. P." } }, { "id": "Rauch-B-F", "name": { "family": "Rauch", "given": "B. F." } }, { "id": "Ward-J-E", "name": { "family": "Ward", "given": "J. E." } }, { "id": "Brandt-T-J", "name": { "family": "Brandt", "given": "T. J." }, "orcid": "0000-0003-4087-1786" }, { "id": "Link-J-T", "name": { "family": "Link", "given": "J. T." } }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Hams-T", "name": { "family": "Hams", "given": "T." } }, { "id": "Sakai-Kenichi", "name": { "family": "Sakai", "given": "K." } }, { "id": "Sasaki-Makoto", "name": { "family": "Sasaki", "given": "M." } }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } } ] }, "title": "Preliminary SuperTIGER Abundances of Galactic Cosmic-Rays for the Charge Interval Z=41-56 and Prospects for SuperTIGER-2", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.\n\nPublished - ICRC2017_201.pdf
", "abstract": "The SuperTIGER (Trans-Iron Galactic Element Recorder) instrument was launched from Williams Field, Antarctica on December 8, 2012 and flew for 55 days at a mean altitude of 125,000 feet on a long-duration balloon flight. SuperTIGER measured the relative abundances of Galactic cosmic-ray nuclei with high statistical precision and well resolved individual element peaks in the charge range Z=10-40. In addition, SuperTIGER made exploratory measurements of the relative abundances up to Z=56. Although the statistics are low for charges greater than Z=40, we will show how the relative abundances of charges Z=40-56 compare to those reported by HEAO3. A second flight, SuperTIGER-II, is planned for December 2017. As SuperTIGER-II will fly during solar minimum, we estimate a ~50% increase in the particles collected per unit time as compared to SuperTIGER-I. With the combined data sets of SuperTIGER-I and II we will improve statistics in the Z=30-40 range and measure individual elemental abundances up to Z=56.", "date": "2017-07", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20180828-122925735", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180828-122925735", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.22323/1.301.0201", "primary_object": { "basename": "ICRC2017_201.pdf", "url": "https://authors.library.caltech.edu/records/5t0q6-hy404/files/ICRC2017_201.pdf" }, "pub_year": "2017", "author_list": "Walsh, N. E.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/jn2h5-yxv79", "eprint_id": 89242, "eprint_status": "archive", "datestamp": "2023-08-19 04:00:29", "lastmod": "2024-01-14 20:43:27", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Sollitt-L-S", "name": { "family": "Sollitt", "given": "L. S." } }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Reanalyzing Inferred High Energy Ionic Charge States for Solar Energetic Particle Events from 2005-2016 with ACE and STEREO", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. \n\nThis work was supported by NASA grant NNX13A66G and NASA contract NA55-03131.\n\nPublished - ICRC2017_097.pdf
", "abstract": "We have estimated mean high-energy ionic charge states of solar energetic particles (SEPs) using the Sollitt et al. (2008) method. In our analysis, the method applies to abundant elements (e.g. N, O, Ne, Mg, Si, and Fe) in SEP events at the energy ranges covered by the STEREO/LET instrument (e.g. 2.7-70 MeV/nuc for Fe) and the ACE/SIS instrument (e.g. 11-168 MeV/nuc for Fe). The method starts by fitting SEP time-intensity profiles during the decay phase of a given, large SEP event in order to obtain energy-dependent decay times. The energy dependence of intensity decay times for a given element in an SEP event is combined with its assumed average atomic mass and an assumed average charge state of 5.9 for carbon as a reference element. The mean charge state for each element is then estimated from the relationship between the energy dependence of its decay times to that for carbon and all other elements in the event. The method has yielded charge states for 8 SEP events using ACE data, 5 SEP events with STEREO A data, and 4 SEP events with STEREO B data through 2015. Calculations for events before 2005 by Sollitt et al. using ACE data also incorporated helium time intensity profile fits, with an assumed charge state of 2, but later calculations dropped helium as a reference element for simplicity, as the calculations were first generalized to later events and to STEREO data. In this paper, we restore helium in order to refine the calculations and compare with the earlier results. In particular, we will focus on the 8 March 2012 event with ACE/SIS data and the 28 September 2012 event with STEREO/LET data. Additionally, other charge state measurements using a geomagnetic rigidity cutoff technique yielded correlations between charge states and Fe/O ratio as well as to observed source solar longitudes. We will use the inferred charge state reanalysis to investigate whether these correlations are also present in ACE and STEREO data.", "date": "2017-07", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20180828-122925836", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180828-122925836", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX13A66G" }, { "agency": "NASA", "grant_number": "NA55-03131" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.22323/1.301.0097", "primary_object": { "basename": "ICRC2017_097.pdf", "url": "https://authors.library.caltech.edu/records/jn2h5-yxv79/files/ICRC2017_097.pdf" }, "pub_year": "2017", "author_list": "Labrador, A. W.; Sollitt, L. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/mz711-4fe02", "eprint_id": 89247, "eprint_status": "archive", "datestamp": "2023-08-19 04:00:40", "lastmod": "2024-01-14 20:43:40", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Lave-K-A", "name": { "family": "Lave", "given": "K. A." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Recent Results from the Cosmic Ray Isotope Spectrometer on NASA's Advanced Composition Explorer", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. \n\nWe thank G. Morlino and V. Ptuskin for helpful comments on the application of propagation models to derive of the source ratio ^(60)Fe/^(56)Fe. \n\nThe research was carried out with support from the National Aeronautics and Space Administration at the California Institute of Technology (under grant NNX13AH66G), the Jet Propulsion Laboratory, Washington University in St. Louis, and the Goddard Space Flight Center.\n\nPublished - ICRC2017_1089.pdf
", "abstract": "The Advanced Composition Explorer (ACE), which carries instrumentation for making high-precision measurements of the charge and mass of energetic nuclei between \u223c1 keV/nuc and \u223c1 GeV/nuc, was launched in August 1997 into an orbit about the L1 Lagrangian point 1.5 million km sunward of the Earth. From this vantage point, ACE collects data that are used for a wide range of studies in galactic and heliospheric physics. The ACE spacecraft and instruments are, for the most part, continuing to perform very well and to extend their data sets. The long mission duration, which is already almost an order of magnitude greater than the two years that was nominally required of ACE, has made it possible to address science topics beyond those envisioned when the mission was proposed. In this paper we address several topics to which ACE's Cosmic Ray Isotope Spectrometer (CRIS) is contributing in the area of galactic cosmic radiation. CRIS has been able to make measurements of extremely rare species, including the primary radioactive nuclide 60Fe and a number of stable \"ultraheavy\" elements with atomic numbers in the range Z=30 to 40. In addition, elemental energy spectra have now been measured over a significant fraction of two solar cycles, thereby enabling studies of the time dependence of the solar modulation of galactic cosmic rays.", "date": "2017-07", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20180828-122926410", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180828-122926410", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA/JPL/Caltech" }, { "agency": "NASA", "grant_number": "NNX13AH66G" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.22323/1.301.1089", "primary_object": { "basename": "ICRC2017_1089.pdf", "url": "https://authors.library.caltech.edu/records/mz711-4fe02/files/ICRC2017_1089.pdf" }, "pub_year": "2017", "author_list": "Wiedenbeck, M. E.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/ek5zy-2m631", "eprint_id": 89231, "eprint_status": "archive", "datestamp": "2023-08-19 04:00:14", "lastmod": "2024-01-14 20:43:01", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Li-Gang", "name": { "family": "Li", "given": "G." }, "orcid": "0000-0001-9313-251X" }, { "id": "Hu-Junxiang", "name": { "family": "Hu", "given": "J." } }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" } ] }, "title": "What is Causing the Deficit of High-Energy Solar Particles in Solar Cycle 24?", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. \n\nWork at Caltech and the University of Alabama/Huntsville was funded by a SHINE Collaborative Research grant under NSF Grant 1622487. In addition, Caltech was funded in part by NASA grants NNZ13AH66G and NNX15AG09G, and UA Huntsville was funded in part by NSF grant AGS-1622391, NASA grants NNX15AJ93G and NNX14AC08G, and by a 2013-2014 IIDR grant at UAH.\n\nPublished - ICRC2017_111.pdf
", "abstract": "The number of large Solar Energetic Particle (SEP) events in solar cycle 24 is reduced by a factor of about 2 compared to cycle 23. In the first 8 years of this cycle there have been only 38 \"GOES\" proton events compared to 79 at this point of cycle 23. What is less well known is that the fluence of protons and heavier ions is reduced by even greater factors (by 6 times for greater than 10 MeV protons, and by 9 times for greater than 100 MeV protons). Indeed the spectral breaks for H, O, and Fe are all occurring about 3 times lower in energy/nucleon in cycle 24. This talk will investigate the reduced acceleration efficiency in cycle 24 by simulating SEP acceleration using the Particle Acceleration and Transport in the Heliosphere (PATH) model, and an improved version known as iPATH, which simulates SEP acceleration at a CME-driven shock in two dimensions. Specifically, we will investigate how SEP fluences and energy spectra depend on variables that include the interplanetary magnetic field strength and turbulence level, and the density and spectrum of suprathermal seed particles.", "date": "2017-07", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20180828-122924747", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180828-122924747", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "AGS-1622487" }, { "agency": "NASA", "grant_number": "NNZ13AH66G" }, { "agency": "NASA", "grant_number": "NNX15AG09G" }, { "agency": "NSF", "grant_number": "AGS-1622391" }, { "agency": "NASA", "grant_number": "NNX15AJ93G" }, { "agency": "NASA", "grant_number": "NNX14AC08G" }, { "agency": "University of Alabama in Huntsville" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.22323/1.301.0111", "primary_object": { "basename": "ICRC2017_111.pdf", "url": "https://authors.library.caltech.edu/records/ek5zy-2m631/files/ICRC2017_111.pdf" }, "pub_year": "2017", "author_list": "Mewaldt, R. A.; Li, G.; et el." }, { "id": "https://authors.library.caltech.edu/records/557tf-b1y27", "eprint_id": 89250, "eprint_status": "archive", "datestamp": "2023-08-19 04:00:51", "lastmod": "2024-01-14 20:43:48", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Burnham-J-A", "name": { "family": "Burnham", "given": "J. A." } }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. R." } }, { "id": "Crabill-R-M", "name": { "family": "Crabill", "given": "R. M." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "Hernandez-L", "name": { "family": "Hernandez", "given": "L." } }, { "id": "Kecman-B", "name": { "family": "Kecman", "given": "B." } }, { "id": "Klemic-J", "name": { "family": "Klemic", "given": "J." } }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Lopez-S", "name": { "family": "Lopez", "given": "S." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Miyasaka-Hiromasa", "name": { "family": "Miyasaka", "given": "H." }, "orcid": "0000-0002-8074-4186" }, { "id": "Rankin-J-S", "name": { "family": "Rankin", "given": "J. S." }, "orcid": "0000-0002-8111-1444" }, { "id": "Riggans-G", "name": { "family": "Riggans", "given": "G." } }, { "id": "Rusert-M-D", "name": { "family": "Rusert", "given": "M. D." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "White-M-L", "name": { "family": "White", "given": "M. L." } } ] }, "title": "Capabilities and Performance of the High-Energy Energetic-Particles Instrument for the Parker Solar Probe Mission", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. \n\nWe thank C. Anderson and D. Miles for administrative support at Caltech, Micron Semiconductor, Ltd. for developing the EPI-Hi detectors, D. Aalami of Space Instruments for developing the bias supply, and the cyclotron laboratories at Michigan State University, Texas A&M University, and the Lawrence Berkeley National Laboratory for providing calibration beams. Part of the research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, with support from the National Aeronautics and Space Administration.\n\nPublished - ICRC2017_016.pdf
", "abstract": "NASA's Parker Solar Probe (PSP) spacecraft (formerly Solar Probe Plus) is scheduled for launch in July 2018 with a planned heliocentric orbit that will carry it on a series of close passes by the Sun with perihelion distances that eventually will get below 10 solar radii. Among other in-situ and imaging sensors, the PSP payload includes the two-instrument \"Integrated Science Investigation of the Sun\" suite, which will make coordinated measurements of energetic ions and electrons. The high-energy instrument (EPI-Hi), operating in the MeV energy range, consists of three detector-telescopes using silicon solid-state sensors for measuring composition, energy spectra, angular distributions, and time structure in solar energetic particle events. The expected performance of this instrument has been studied using accelerator calibrations, radioactive-source tests, and simulations. We present the EPI-Hi measurement capabilities drawing on these calibration data and simulation results for illustrations.", "date": "2017-07", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20180828-122926697", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180828-122926697", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA/JPL/Caltech" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.22323/1.301.0016", "primary_object": { "basename": "ICRC2017_016.pdf", "url": "https://authors.library.caltech.edu/records/557tf-b1y27/files/ICRC2017_016.pdf" }, "pub_year": "2017", "author_list": "Wiedenbeck, M. E.; Burnham, J. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/sv93x-v4w18", "eprint_id": 89222, "eprint_status": "archive", "datestamp": "2023-08-20 14:06:39", "lastmod": "2024-01-14 20:42:36", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Kretschmar-P", "name": { "family": "Kretschmar", "given": "Peter" }, "orcid": "0000-0001-9840-2048" }, { "id": "F\u00fcrst-F", "name": { "family": "Fuerst", "given": "Felix" }, "orcid": "0000-0003-0388-0560" }, { "id": "Wilson-Hodge-C-A", "name": { "family": "Wilson-Hodge", "given": "Colleen A." }, "orcid": "0000-0002-8585-0084" }, { "id": "Blay-P", "name": { "family": "Blay", "given": "Pere" }, "orcid": "0000-0003-2018-1059" }, { "id": "Kajava-J", "name": { "family": "Kajava", "given": "Jari" } }, { "id": "Alfonso-Garz\u00f3n-J", "name": { "family": "Alfonso-Garz\u00f3n", "given": "Julia" }, "orcid": "0000-0003-0852-3474" }, { "id": "K\u00fchnel-M", "name": { "family": "K\u00fchnel", "given": "Matthias" } }, { "id": "Kreykenbohm-I", "name": { "family": "Kreykenbohm", "given": "Ingo" }, "orcid": "0000-0001-7335-1803" }, { "id": "Wilms-J", "name": { "family": "Wilms", "given": "J\u00f6rn" }, "orcid": "0000-0003-2065-5410" }, { "id": "Jenke-P-A", "name": { "family": "Jenke", "given": "Peter A." } }, { "id": "Pottschmidt-K", "name": { "family": "Pottschmidt", "given": "Katja" }, "orcid": "0000-0002-4656-6881" } ] }, "title": "EXO 2030+375 Restarts in Reverse", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. \n\nWe thank the Swift, NuSTAR, and NOT teams for scheduling the requested observations, sometimes on short notice.\n\nPublished - INTEGRAL2016_076.pdf
", "abstract": "The Be X-ray binary pulsar EXO 2030+375, first detected in 1985, has shown a significant detected X-ray outburst at nearly every periastron passage of its 46-day orbit for the past 25 years, with one low state accompanied by a torque reversal in the 1990s. In early 2015 the outbursts progressively became fainter and less regular while the monotonic spin-up flattened. At the same time a decrease in the H\u03b1 line equivalent width was reported, indicating a change in the disk surrounding the mass donor. \n\nIn order to explore the source behaviour in the poorly explored low-flux state with a possible transition to a state of centrifugal inhibition of accretion we have undertaken an observing campaign with Swift/XRT, NuSTAR and the Nordic Optical Telescope (NOT). This conference contribution reports the preliminary results obtained from our campaign.", "date": "2016-10", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20180828-122923745", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180828-122923745", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" }, { "id": "NuSTAR" } ] }, "doi": "10.22323/1.285.0076", "primary_object": { "basename": "INTEGRAL2016_076.pdf", "url": "https://authors.library.caltech.edu/records/sv93x-v4w18/files/INTEGRAL2016_076.pdf" }, "pub_year": "2016", "author_list": "Kretschmar, Peter; Fuerst, Felix; et el." }, { "id": "https://authors.library.caltech.edu/records/04p1b-px658", "eprint_id": 73543, "eprint_status": "archive", "datestamp": "2023-08-20 12:53:02", "lastmod": "2024-01-13 20:23:32", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Smith-R-K", "name": { "family": "Smith", "given": "R. K." } }, { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "K. K." }, "orcid": "0000-0003-1252-4891" } ] }, "title": "Arcus: the x-ray grating spectrometer explorer", "ispublished": "unpub", "full_text_status": "public", "keywords": "Gratings, X-rays: spectroscopy, Instrumentation", "note": "\u00a9 2016 Society of Photo-Optical Instrumentation Engineers (SPIE).\n\nPublished - 99054M.pdf
", "abstract": "Arcus will be proposed to the NASA Explorer program as a free-flying satellite mission that will enable high-resolution soft X-ray spectroscopy (8-50) with unprecedented sensitivity \u2013 effective areas of >500 sq cm and spectral resolution >2500. The Arcus key science goals are (1) to determine how baryons cycle in and out of galaxies by measuring the effects of structure formation imprinted upon the hot gas that is predicted to lie in extended halos around galaxies, groups, and clusters, (2) to determine how black holes influence their surroundings by tracing the propagation of out-flowing mass, energy and momentum from the vicinity of the black hole out to large scales and (3) to understand how accretion forms and evolves stars and circumstellar disks by observing hot infalling and outflowing gas in these systems. Arcus relies upon grazing-incidence silicon pore X-ray optics with the same 12m focal length (achieved using an extendable optical bench) that will be used for the ESA Athena mission. The focused X-rays from these optics will then be diffracted by high-efficiency off-plane reflection gratings that have already been demonstrated on sub-orbital rocket flights, imaging the results with flight-proven CCD detectors and electronics. The power and telemetry requirements on the spacecraft are modest. The majority of mission operations will not be complex, as most observations will be long (~100 ksec), uninterrupted, and pre-planned, although there will be limited capabilities to observe targets of opportunity, such as tidal disruption events or supernovae with a 3-5 day turnaround. After the end of prime science, we plan to allow guest observations to maximize the science return of Arcus to the community.", "date": "2016-07-18", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 99054M", "id_number": "CaltechAUTHORS:20170119-083030222", "isbn": "978-1-5106-0189-5", "book_title": "Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20170119-083030222", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "den-Herder-J-W-A", "name": { "family": "den Herder", "given": "Jan-Willem A." } }, { "id": "Takahashi-Tadayuki", "name": { "family": "Takahashi", "given": "Tadayuki" } }, { "id": "Bautz-M", "name": { "family": "Bautz", "given": "Marshall" } } ] }, "doi": "10.1117/12.2231778", "primary_object": { "basename": "99054M.pdf", "url": "https://authors.library.caltech.edu/records/04p1b-px658/files/99054M.pdf" }, "pub_year": "2016", "author_list": "Smith, R. K. and Madsen, K. K." }, { "id": "https://authors.library.caltech.edu/records/ntk0y-y0426", "eprint_id": 72090, "eprint_status": "archive", "datestamp": "2023-08-20 12:52:47", "lastmod": "2024-01-13 20:20:32", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Forster-K", "name": { "family": "Foster", "given": "Karl" }, "orcid": "0000-0001-5800-5531" }, { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "Kristin K." }, "orcid": "0000-0003-1252-4891" }, { "id": "Miyasaka-Hiromasa", "name": { "family": "Miyasaka", "given": "Hiromasa" }, "orcid": "0000-0002-8074-4186" }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "William W." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Rana-V-R", "name": { "family": "Rana", "given": "Vikram R." }, "orcid": "0000-0003-1703-8796" }, { "id": "Markwardt-C-B", "name": { "family": "Markwardt", "given": "Craig B." }, "orcid": "0000-0001-9803-3879" }, { "id": "Grefenstette-B-W", "name": { "family": "Grefenstette", "given": "Brian W." }, "orcid": "0000-0002-1984-2932" } ] }, "title": "Getting NuSTAR on target: predicting mast motion", "ispublished": "unpub", "full_text_status": "public", "keywords": "NuSTAR, NASA small explorer, X-ray optics, extendable mast, Science Operations, Metrology, mast thermal flexing", "note": "\u00a9 2016 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nThis work was supported under NASA contract No. NNG08FD60C, and made use of data from the NuSTAR mission, a project led by the California Institute of Technology, managed by the Jet Propulsion Laboratory, and funded by the National Aeronautics and Space Administration. We thank the NuSTAR operations, Software and Calibration teams for support with the execution and analysis of these observations. This research has made use of the NuSTAR Data Analysis Software (NuSTARDAS) jointly developed by the ASI Science Data Center (ASDC, Italy) and the California Institute of Technology (USA).\n\nPublished - 99100Z.pdf
Submitted - 1608.01704.pdf
", "abstract": "The Nuclear Spectroscopic Telescope Array (NuSTAR) is the first focusing high energy (3-79 keV) X-ray observatory operating for four years from low Earth orbit. The X-ray detector arrays are located on the spacecraft bus with the optics modules mounted on a flexible mast of 10.14m length. The motion of the telescope optical axis on the detectors during each observation is measured by a laser metrology system and matches the pre-launch predictions of the thermal flexing of the mast as the spacecraft enters and exits the Earths shadow each orbit. However, an additional motion of the telescope field of view was discovered during observatory commissioning that is associated with the spacecraft attitude control system and an additional flexing of the mast correlated with the Solar aspect angle for the observation. We present the methodology developed to predict where any particular target coordinate will fall on the NuSTAR detectors based on the Solar aspect angle at the scheduled time of an observation. This may be applicable to future observatories that employ optics deployed on extendable masts. The automation of the prediction system has greatly improved observatory operations efficiency and the reliability of observation planning.", "date": "2016-07-15", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 99100Z", "id_number": "CaltechAUTHORS:20161117-074725282", "isbn": "978-1-5106-0199-4", "book_title": "Observatory Operations: Strategies, Processes, and Systems VI", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20161117-074725282", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG08FD60C" }, { "agency": "NASA/JPL/Caltech" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" }, { "id": "NuSTAR" } ] }, "contributors": { "items": [ { "id": "Peck-A-B", "name": { "family": "Peck", "given": "Alison B." } }, { "id": "Seaman-R-L", "name": { "family": "Seaman", "given": "Robert L." } }, { "id": "Benn-C-R", "name": { "family": "Benn", "given": "Chris R." } } ] }, "doi": "10.1117/12.2231239", "primary_object": { "basename": "1608.01704.pdf", "url": "https://authors.library.caltech.edu/records/ntk0y-y0426/files/1608.01704.pdf" }, "related_objects": [ { "basename": "99100Z.pdf", "url": "https://authors.library.caltech.edu/records/ntk0y-y0426/files/99100Z.pdf" } ], "pub_year": "2016", "author_list": "Foster, Karl; Madsen, Kristin K.; et el." }, { "id": "https://authors.library.caltech.edu/records/mrwcx-3pt37", "eprint_id": 74506, "eprint_status": "archive", "datestamp": "2023-08-20 11:00:13", "lastmod": "2024-01-13 20:25:16", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Zank-G-P", "name": { "family": "Zank", "given": "G. P." }, "orcid": "0000-0002-4642-6192" }, { "id": "Hunana-P", "name": { "family": "Hunana", "given": "P." } }, { "id": "Mostafavi-P", "name": { "family": "Mostafavi", "given": "P." } }, { "id": "Le-Roux-J-A", "name": { "family": "le Roux", "given": "J. A." } }, { "id": "Webb-G-M", "name": { "family": "Webb", "given": "G. M." } }, { "id": "Khabarova-O", "name": { "family": "Khabarova", "given": "O." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Decker-R-B", "name": { "family": "Decker", "given": "R. B." } } ] }, "title": "Particle acceleration and reconnection in the solar wind", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2016 AIP Publishing LLC. \n\nWe acknowledge partial support from NASA grants NNX08AJ33G, Subaward 37102-2, NNX14AC08G, NNX14AJ53G, RR185-447/4944336 and NNX12AB30G, NNX14AF43G, NNX15AI65.\n\nPublished - 1.4943848.pdf
", "abstract": "An emerging paradigm for the dissipation of magnetic turbulence in the supersonic solar wind is via localized quasi-2D small-scale magnetic island reconnection processes. An advection-diffusion transport equation for a nearly isotropic particle distribution describes particle transport and energization in a region of interacting magnetic islands [1; 2]. The dominant charged particle energization processes are 1) the electric field induced by quasi-2D magnetic island merging, and 2) magnetic island contraction. The acceleration of charged particles in a \"sea of magnetic islands\" in a super-Alfv\u00e9nic flow, and the energization of particles by combined diffusive shock acceleration (DSA) and downstream magnetic island reconnection processes are discussed.", "date": "2016-03-25", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "Art. No. 070011", "id_number": "CaltechAUTHORS:20170223-134545862", "isbn": "978-0-7354-1367-2", "book_title": "SOLAR WIND 14: Proceedings of the Fourteenth International Solar Wind Conference", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20170223-134545862", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX08AJ33G" }, { "agency": "NASA", "grant_number": "NNX14AC08G" }, { "agency": "NASA", "grant_number": "NNX14AJ53G" }, { "agency": "NASA", "grant_number": "RR185-447/4944336" }, { "agency": "NASA", "grant_number": "NNX12AB30G" }, { "agency": "NASA", "grant_number": "NNX14AF43G" }, { "agency": "NASA", "grant_number": "NNX15AI65G" } ] }, "other_numbering_system": { "items": [ { "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.1063/1.4943848", "primary_object": { "basename": "1.4943848.pdf", "url": "https://authors.library.caltech.edu/records/mrwcx-3pt37/files/1.4943848.pdf" }, "pub_year": "2016", "author_list": "Zank, G. P.; Hunana, P.; et el." }, { "id": "https://authors.library.caltech.edu/records/kacpp-db347", "eprint_id": 65732, "eprint_status": "archive", "datestamp": "2023-08-20 10:58:47", "lastmod": "2024-01-13 16:46:11", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Solar energetic particle anisotropies and insights into particle transport", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2016 AIP Publishing LLC. \n\nThis work was supported by the National Aeronautics and Space Administration (NASA) at the California Institute of\nTechnology and the Jet Propulsion Laboratory under sub-contract SA2715-26309 from the University of California\nat Berkeley under NASA contract NAS5-03131, and by NASA award NNX08AK87G. We thank the STEREO/MAG\nteam for making their data publicly available, and Lan Jian and Ying Liu for helpful discussions.\n\nPublished - 1.4943841.pdf
", "abstract": "As solar energetic particles (SEPs) travel through interplanetary space, their pitch-angle distributions are shaped by the competing effects of magnetic focusing and scattering. Measurements of SEP anisotropies can therefore reveal information about interplanetary conditions such as magnetic field strength, topology, and turbulence levels at remote locations from the observer. Onboard each of the two STEREO spacecraft, the Low Energy Telescope (LET) measures pitch-angle distributions for protons and heavier ions up to iron at energies of about 2-12\u2005MeV/nucleon. Anisotropies observed using LET include bidirectional flows within interplanetary coronal mass ejections, sunward-flowing particles when STEREO was magnetically connected to the back side of a shock, and loss-cone distributions in which particles with large pitch angles underwent magnetic mirroring at an interplanetary field enhancement that was too weak to reflect particles with the smallest pitch angles. Unusual oscillations in the width of a beamed distribution at the onset of the 23 July 2012 SEP event were also observed and remain puzzling. We report LET anisotropy observations at both STEREO spacecraft and discuss their implications for SEP transport, focusing exclusively on the extreme event of 23 July 2012 in which a large variety of anisotropies were present at various times during the event.", "date": "2016-03-22", "date_type": "published", "publisher": "American Institute of Physics", "id_number": "CaltechAUTHORS:20160329-095104677", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20160329-095104677", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "SA2715-26309" }, { "agency": "NASA", "grant_number": "NAS5-03131" }, { "agency": "NASA", "grant_number": "NNX08AK87G" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Wang-Linghua", "name": { "family": "Wang", "given": "Linghua" } }, { "id": "Bruno-R", "name": { "family": "Bruno", "given": "Roberto" } }, { "id": "M\u00f6bius-E", "name": { "family": "M\u00f6bius", "given": "Eberhard" } }, { "id": "Vourlidas-A", "name": { "family": "Vourlidas", "given": "Angelos" } }, { "id": "Zank-G-P", "name": { "family": "Zank", "given": "Gary" } } ] }, "doi": "10.1063/1.4943841", "primary_object": { "basename": "1.4943841.pdf", "url": "https://authors.library.caltech.edu/records/kacpp-db347/files/1.4943841.pdf" }, "pub_year": "2016", "author_list": "Leske, R. A.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/1w7at-zqk68", "eprint_id": 65726, "eprint_status": "archive", "datestamp": "2023-08-20 10:58:42", "lastmod": "2024-01-13 16:46:05", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" } ] }, "title": "Current understanding of SEP acceleration and transport", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2016 AIP Publishing LLC. \n\nThe author thanks the SDO/AIA and STEREO/SECCHI team for making their movie and image data available. Additional thanks to J. Giacalone for his discussions on co-rotation, field line meandering, and particle diffusion and for the creation of the left panel of Fig 2.\n\nPublished - 1.4943836.pdf
", "abstract": "Through new missions and unusual solar conditions, solar cycle 24 has afforded the opportunity for expanding our understanding of solar energetic particle (SEP) acceleration and transport. With complementary SEP observations from multiple spacecraft separated significantly in longitude, it has been possible to examine the longitudinal distribution of energetic particles in individual events, rather than relying on statistical event studies. Unprecedented 360\u00b0 views of the Sun, in multiple wavelengths and coronagraphs, has made it possible to identify solar source regions regardless of where they are located and to more accurately determine the properties of related coronal mass ejections. The unusually quiet conditions during the onset of cycle 24 allowed smaller SEP events to be examined and their source regions to be unambiguously identified. This paper reviews some of the unexpected results from multi-spacecraft SEP observations made over this solar cycle and discusses their implications for particle acceleration near the Sun and transport through the inner heliosphere.", "date": "2016-03-22", "date_type": "published", "publisher": "American Institute of Physics", "id_number": "CaltechAUTHORS:20160329-083948874", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20160329-083948874", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Wang-Linghua", "name": { "family": "Wang", "given": "Linghua" } }, { "id": "Bruno-R", "name": { "family": "Bruno", "given": "Roberto" } }, { "id": "M\u00f6bius-E", "name": { "family": "M\u00f6bius", "given": "Eberhard" } }, { "id": "Vourlidas-A", "name": { "family": "Vourlidas", "given": "Angelos" } }, { "id": "Zank-G-P", "name": { "family": "Zank", "given": "Gary" } } ] }, "doi": "10.1063/1.4943836", "primary_object": { "basename": "1.4943836.pdf", "url": "https://authors.library.caltech.edu/records/1w7at-zqk68/files/1.4943836.pdf" }, "pub_year": "2016", "author_list": "Cohen, C. M. S." }, { "id": "https://authors.library.caltech.edu/records/ybbd7-fy137", "eprint_id": 63335, "eprint_status": "archive", "datestamp": "2023-08-20 07:52:15", "lastmod": "2024-01-13 16:30:48", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Gaskin-J-A", "name": { "family": "Gaskin", "given": "Jessica A." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" } ] }, "title": "The X-ray Surveyor Mission: A Concept Study", "ispublished": "unpub", "full_text_status": "public", "keywords": "X-ray Astronomy, X-ray optics, X-ray gratings, X-ray detectors", "note": "\u00a9 2015 SPIE. August 24, 2015. \n\nWe wish to acknowledge detailed contributions from Dr. Stephen Smith (NASA GSFC) and Dr. Kiranmayee Kilaru (NASA MSFC). We would also like to recognize the Advanced Concept team (led by Randall Hopkins and Andrew Schnell) and Cost team (led by Spencer Hill) at NASA MSFC for their work on developing the X-ray Surveyor mission concept.\n\nPublished - 96010J.pdf
", "abstract": "NASA's Chandra X-ray Observatory continues to provide an unparalleled means for exploring the high-energy universe. With its half-arcsecond angular resolution, Chandra studies have deepened our understanding of galaxy clusters, active galactic nuclei, galaxies, supernova remnants, neutron stars, black holes, and solar system objects. As we look beyond Chandra, it is clear that comparable or even better angular resolution with greatly increased photon throughput is essential to address ever more demanding science questions\u2014such as the formation and growth of black hole seeds at very high redshifts; the emergence of the first galaxy groups; and details of feedback over a large range of scales from galaxies to galaxy clusters. Recently, we initiated a concept study for such a mission, dubbed X-ray Surveyor. The X-ray Surveyor strawman payload is comprised of a high-resolution mirror assembly and an instrument set, which may include an X-ray microcalorimeter, a high-definition imager, and a dispersive grating spectrometer and its readout. The mirror assembly will consist of highly nested, thin, grazing-incidence mirrors, for which a number of technical approaches are currently under development\u2014including adjustable X-ray optics, differential deposition, and new polishing techniques applied to a variety of substrates. This study benefits from previous studies of large missions carried out over the past two decades and, in most areas, points to mission requirements no more stringent than those of Chandra.", "date": "2015-08-24", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 96010J", "id_number": "CaltechAUTHORS:20160104-131950147", "isbn": "978-1-62841-767-8", "book_title": "UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XIX", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20160104-131950147", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" } ] }, "other_numbering_system": { "items": [ { "id": "2015-32", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Siegmund-O-H-W", "name": { "family": "Siegmund", "given": "Oswald H. W." } } ] }, "doi": "10.1117/12.2190837", "primary_object": { "basename": "96010J.pdf", "url": "https://authors.library.caltech.edu/records/ybbd7-fy137/files/96010J.pdf" }, "pub_year": "2015", "author_list": "Gaskin, Jessica A. and Harrison, Fiona A." }, { "id": "https://authors.library.caltech.edu/records/sces0-dxb72", "eprint_id": 89243, "eprint_status": "archive", "datestamp": "2023-08-20 07:38:42", "lastmod": "2024-01-14 20:43:29", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hams-T", "name": { "family": "Hams", "given": "T." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Bose-R-G", "name": { "family": "Bose", "given": "R. G." } }, { "id": "Braun-D-L", "name": { "family": "Braun", "given": "D. L." } }, { "id": "Brandt-T-J", "name": { "family": "Brandt", "given": "T. J." }, "orcid": "0000-0003-4087-1786" }, { "id": "Daniels-W-M", "name": { "family": "Daniels", "given": "W. M." } }, { "id": "Dowkontt-P-F", "name": { "family": "Dowkontt", "given": "P. F." } }, { "id": "Fitzsimmons-S-P", "name": { "family": "Fitzsimmons", "given": "S. P." } }, { "id": "Hahne-D-J", "name": { "family": "Hahne", "given": "D. J." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Klemic-J", "name": { "family": "Klemic", "given": "J." } }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Link-J-T", "name": { "family": "Link", "given": "J. T." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Moore-P-B", "name": { "family": "Moore", "given": "P." } }, { "id": "Murphy-R-P", "name": { "family": "Murphy", "given": "R. P." } }, { "id": "Olevitch-M-A", "name": { "family": "Olevitch", "given": "M. A." } }, { "id": "Rauch-B-F", "name": { "family": "Rauch", "given": "B. F." } }, { "id": "Sakai-Kenichi", "name": { "family": "Sakai", "given": "K." } }, { "id": "San-Sebastian-F", "name": { "family": "San Sebastian", "given": "F." } }, { "id": "Sasaki-Makoto", "name": { "family": "Sasaki", "given": "M." } }, { "id": "Simburger-G-E", "name": { "family": "Simburger", "given": "G. E." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Ward-J-E", "name": { "family": "Ward", "given": "J. E." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "SuperTIGER and the Origin of Galactic Cosmic-Rays", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-ShareAlike. \n\nThe SuperTIGER program is supported by NASA. We wish to thank the Columbia Scientific Balloon Facility (CSBF) personnel and the Wallops Balloon Program Office (BPO) for their excellent efforts that resulted in our highly successful long-duration balloon flight. We also wish to thank the National Science Foundation Office of Polar Programs for their outstanding logistical support which made this investigation possible.\n\nPublished - ICRC2015_435.pdf
", "abstract": "The SuperTIGER (Super Trans-Iron Galactic Element Recorder) long-duration balloon instrument has measured the abundances of galactic cosmic-ray elements from _(10)Ne to _(40)Zr with high statistics and single element resolution and its measurements extend to about _(60)Nd. SuperTIGER is the first instrument to measure the abundance of every element from Z = 30 to 40 with significant statistics, recording more than 600 nuclei with atomic number Z > 30 in its first flight. Its measured nuclear charge resolution is excellent, with \u03c3_Z = 0.16 c.u. at _(26)Fe. From 0.8 to 10 GeV/nucleon it also measures the energy spectra of the more abundant elements with 10 \u2264 Z \u2264 30. SuperTIGER-1 launched from Williams Field, McMurdo Station, Antarctica, on December 8, 2012, flew for a record 55 days and over 2.5 revolutions around the continent, returned data on over 50 million heavy cosmic ray nuclei. The instrument has now been recovered from Antarctica and preparations are underway for its next flight. Instrument and flight details, methods of charge identification employed, preliminary results from the SuperTIGER-1 balloon flight, and a summary of the recovery will be presented. The SuperTIGER-1 measurements will be discussed in the context of their stringent tests of the OB association model for the origin of galactic cosmic rays. Finally, planned improvements to the SuperTIGER instrument and future flight plans will be described. Treatment of the data depends somewhat on Z and details of the data analysis and results in ranges 10 \u2264 Z \u2264 29 and 30 \u2264 Z \u2264 40 are given in other talks at this conference. SuperTIGER was developed by Washington University in St. Louis, NASA Goddard Space Flight Center, the California Institute of Technology, Jet Propulsion Laboratory, and the University of Minnesota.", "date": "2015-08", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20180828-122925947", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180828-122925947", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.22323/1.236.0435", "primary_object": { "basename": "ICRC2015_435.pdf", "url": "https://authors.library.caltech.edu/records/sces0-dxb72/files/ICRC2015_435.pdf" }, "pub_year": "2015", "author_list": "Hams, T.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/ww5ab-hta10", "eprint_id": 89498, "eprint_status": "archive", "datestamp": "2023-08-20 07:39:02", "lastmod": "2024-01-14 20:57:12", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hams-T", "name": { "family": "Hams", "given": "T." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Brandt-T-J", "name": { "family": "Brandt", "given": "T. J." }, "orcid": "0000-0003-4087-1786" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "Dowkontt-P-F", "name": { "family": "Dowkontt", "given": "P. F." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Krizmanic-J-F", "name": { "family": "Krizmanic", "given": "J. F." } }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Link-J-T", "name": { "family": "Link", "given": "J. T." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Murphy-R-P", "name": { "family": "Murphy", "given": "R. P." } }, { "id": "Rauch-B-F", "name": { "family": "Rauch", "given": "B. F." } }, { "id": "Sakai-Kenichi", "name": { "family": "Sakai", "given": "K." } }, { "id": "Sasaki-Makoto", "name": { "family": "Sasaki", "given": "M." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Ward-J-E", "name": { "family": "Ward", "given": "J. E." } }, { "id": "Westphal-A-J", "name": { "family": "Westphal", "given": "A. J." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Elemental Abundances of Ultra-Heavy GCRs measured by SuperTIGER and ACE-CRIS and the Origin of Galactic Cosmic Rays", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-ShareAlike. \n\nSuperTIGER is supported by NASA under the ROSES 2007 APRA program under grants NNX09AC17G to Washington University in St. Louis and NNX09AC18G to Caltech and JPL, and APRA07-0146 to NASA/GSFC. We wish to thank the Columbia Scientific Balloon Facility (CSBF) personnel and the Wallops Balloon Program Office (BPO) for their excellent efforts that resulted in our highly successful long-duration balloon flight. We also wish to thank the National Science Foundation Office of Polar Programs for their outstanding logistical support which made this investigation possible. The ACE data analysis is supported by NASA Grant NNX13AH66G.\n\nPublished - ICRC2015_038.pdf
", "abstract": "The Super Trans-Iron Galactic Element Recorder (SuperTIGER) long-duration balloon instrument and the Cosmic Ray Isotope Spectrometer (CRIS) on the NASA Advanced Composition Explorer (ACE) satellite have measured the abundances of galactic cosmic-ray elements from _(10)Ne to _(40)Zr with high statistics and single-element resolution. SuperTIGER launched from Williams Field, McMurdo Station, Antarctica, on December 8, 2012, flying for a record 55 days. During that flight we detected \u223c1,300 nuclei with atomic number Z \u2265 30. The resolution in charge (Z) of SuperTIGER is excellent, with \u03c3_Z \u2248 0.16 c.u. at _(26)Fe. SuperTIGER is sensitive to nuclei with energy at the top of the atmosphere of E > 0.8 GeV/nucleon. The instrument has now been recovered and preparations are underway for its next flight. ACE/CRIS has been taking data in space for more than 17 years since launch in 1997, has collected \u223c625 nuclei with atomic number Z \u2265 30, and shows excellent resolution with clear separation between the charges for 30 \u2264 Z \u2264 40. ACE/CRIS is sensitive to nuclei in the energy range 150 \u2264 E \u2264 600 MeV/nucleon. Preliminary results from the balloon-borne SuperTIGER show good agreement with ACE measurements in space, validating our corrections to SuperTIGER abundances for nuclear interactions in the atmosphere. The results from these experiments will be discussed in the context of the OB association model for the origin of galactic cosmic rays. Future missions to measure elemental abundances to higher Z, the SuperTIGER-II LDB instrument and the orbiting Heavy Nuclei eXplorer (HNX) mission, will also be discussed.", "date": "2015-08", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20180910-131321786", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180910-131321786", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX09AC17G" }, { "agency": "NASA", "grant_number": "NNX09AC18G" }, { "agency": "NASA", "grant_number": "APRA07-0146" }, { "agency": "NASA", "grant_number": "NNX13AH66G" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.22323/1.236.0038", "primary_object": { "basename": "ICRC2015_038.pdf", "url": "https://authors.library.caltech.edu/records/ww5ab-hta10/files/ICRC2015_038.pdf" }, "pub_year": "2015", "author_list": "Hams, T.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/j5rfb-feq23", "eprint_id": 89246, "eprint_status": "archive", "datestamp": "2023-08-20 07:38:53", "lastmod": "2024-01-14 20:43:37", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Klassen-A", "name": { "family": "Klassen", "given": "A." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Liewer-P-A", "name": { "family": "Liewer", "given": "P. A." } }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Nitta-N-V", "name": { "family": "Nitta", "given": "N. V." } } ] }, "title": "Constraints on Mechanisms for Longitudinal Spreading of Impulsive SEPs from Multispacecraft Observations of Scatter-free Events", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-ShareAlike. \n\nWe thank Joe Giacalone for his comments on field line random walk. This work was supported by NASA at JPL, Caltech, APL, and LMSAL. The STEREO/SEPT projects are supported under Grant 50 OC 1302 by the German Bundesministerium f\u00fcr Wirtschaft through the Deutsches Zentrum f\u00fcr Luft- und Raumfahrt (DLR).\n\nPublished - ICRC2015_106.pdf
", "abstract": "Impulsive solar energetic particle (ISEP) events are understood to involve particle acceleration in relatively compact regions of the solar corona where reconnection causes the release of magnetic energy and produces both turbulence and larger scale motions that can interact with and accelerate charged particles. In many cases the longitudinal spread of ISEPs observed at 1 AU is relatively narrow and possibly consistent with a point source of acceleration. However, several ISEP events observed with the two STEREO spacecraft and near-Earth instruments have had exceptionally wide longitudinal spreads, sometimes significantly greater than 90\u00b0. It has been suggested that this spreading could be caused by interplanetary scattering in conjunction with corotation of the interplanetary field. There exists a subset of ISEP events that are referred to as \"scatter free\" due to characteristics such as velocity dispersion, strong particle anisotropy, and/or flux dropouts observed at 1 AU. We report on scatter-free events observed by both of the STEREOs in 2014 when the spacecraft were separated by 38\u00b0. Producing such a large spread in the absence of significant interplanetary scattering requires a process other than cross-field diffusion for the longitudinal transport and suggests that the spreading could have its origin in the solar corona.", "date": "2015-08", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20180828-122926312", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180828-122926312", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA/JPL/Caltech" }, { "agency": "Deutsches Zentrum f\u00fcr Luft- und Raumfahrt (DLR)", "grant_number": "50 OC 1302" }, { "agency": "Bundesministerium f\u00fcr Wirtschaft und Technologie (BMWi)" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.22323/1.236.0106", "primary_object": { "basename": "ICRC2015_106.pdf", "url": "https://authors.library.caltech.edu/records/j5rfb-feq23/files/ICRC2015_106.pdf" }, "pub_year": "2015", "author_list": "Wiedenbeck, M. E.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/xmae6-abw36", "eprint_id": 89240, "eprint_status": "archive", "datestamp": "2023-08-20 07:38:38", "lastmod": "2024-01-14 20:43:22", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Richardson-I-G", "name": { "family": "Richardson", "given": "I. G." }, "orcid": "0000-0002-3855-3634" }, { "id": "Cane-H-V", "name": { "family": "Cane", "given": "H. V." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "The Longitudinal Distribution of Solar Energetic Particles", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-ShareAlike.\n\nPublished - ICRC2015_104.pdf
", "abstract": "Using observations from the High Energy Telescopes (HETs) on STEREO A and B and similar observations from SoHO, near-Earth, we have identified ~250 individual solar energetic particle events that include >14 MeV protons since the beginning of the STEREO mission [1]. Between the end of December 2009, when the STEREO A and B spacecraft were, respectively, ahead and behind Earth by ~ 65\u00b0 in ecliptic longitude, and the end of December 2013, 43 different events were clearly detected at all three locations. The observed intensities of such an event are usually assumed to be Gaussian distributed as a function of the longitudes of the Parker Spiral footpoints at the Sun for each observer. This neglects the fact that the interplanetary magnetic field may have large deviations from Parker Spirals, e.g. due to coronal mass ejections from\nprior events. Nonetheless, we have fit Gaussians to the peak intensities observed simultaneously at three spacecraft for all 43 events. The Gaussian peak intensity is poorly correlated with the corresponding CME speed and the FWHM is uncorrelated with the CME speed. Surprisingly, however, there appear to be distinctly non-random variations of the FWHM values from event to event.", "date": "2015-08", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20180828-122925629", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180828-122925629", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.22323/1.236.0104", "primary_object": { "basename": "ICRC2015_104.pdf", "url": "https://authors.library.caltech.edu/records/xmae6-abw36/files/ICRC2015_104.pdf" }, "pub_year": "2015", "author_list": "von Rosenvinge, T. T.; Richardson, I. G.; et el." }, { "id": "https://authors.library.caltech.edu/records/9f69w-zsj95", "eprint_id": 89238, "eprint_status": "archive", "datestamp": "2023-08-20 07:38:25", "lastmod": "2024-01-14 20:43:18", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Brandt-T-J", "name": { "family": "Brandt", "given": "T. J." }, "orcid": "0000-0003-4087-1786" }, { "id": "Hams-T", "name": { "family": "Hams", "given": "T." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Link-J-T", "name": { "family": "Link", "given": "J. T." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Murphy-R-P", "name": { "family": "Murphy", "given": "R. P." } }, { "id": "Rauch-B-F", "name": { "family": "Rauch", "given": "B. F." } }, { "id": "Sakai-Kenichi", "name": { "family": "Sakai", "given": "K." } }, { "id": "Sasaki-Makoto", "name": { "family": "Sasaki", "given": "M." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Ward-J-E", "name": { "family": "Ward", "given": "J. E." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Galactic Cosmic-Ray Composition and Spectra for Ne through Cu from 0.8 to 10 GeV/nuc with the SuperTIGER Instrument", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-ShareAlike. \n\nThis work was supported by NASA under grants NNX09AC17G NNX09AC18G, NNX14AB24G, NNX14AB25G, and NNX15AC15G, by the Peggy and Steve Fossett Foundation, and by the McDonnell Center for the Space Sciences at Washington University in St. Louis. We thank the ACE/CRIS instrument team and the ACE Science Center for providing ACE data.\n\nPublished - ICRC2015_341.pdf
", "abstract": "SuperTIGER (Trans-Iron Galactic Element Recorder) is a large-area balloon-borne instrument built to measure the galactic cosmic-ray abundances of elements from Z=10 (Ne) through Z=56 (Ba) at energies from 0.8 to ~10 GeV/nuc. SuperTIGER successfully flew around Antarctica for a record-breaking 55 days, from December 8, 2012 to February 1, 2013. In this paper, we present results of an analysis of the data taken during the flight for elements from Z=10 (Ne) to Z=28 (Ni). We report excellent charge separation throughout this range, with an Fe charge resolution of 0.16 charge units. Using a small sample of our data (~1/40th of our total), we will compare our galactic element secondary to primary ratios (e.g. (Sc+Ti+V)/Fe) with those from other instruments operating at different energy ranges.", "date": "2015-08", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20180828-122925420", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180828-122925420", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX09AC17G" }, { "agency": "NASA", "grant_number": "NNX09AC18G" }, { "agency": "NASA", "grant_number": "NNX14AB24G" }, { "agency": "NASA", "grant_number": "NNX14AB25G" }, { "agency": "NASA", "grant_number": "NNX15AC15G" }, { "agency": "Peggy and Steve Fossett Foundation" }, { "agency": "McDonnell Center for the Space Sciences" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.22323/1.236.0341", "primary_object": { "basename": "ICRC2015_341.pdf", "url": "https://authors.library.caltech.edu/records/9f69w-zsj95/files/ICRC2015_341.pdf" }, "pub_year": "2015", "author_list": "Labrador, A. W.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/n5x3q-5qz02", "eprint_id": 89237, "eprint_status": "archive", "datestamp": "2023-08-20 07:38:20", "lastmod": "2024-01-14 20:43:16", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "Lave-K-A", "name": { "family": "Lave", "given": "K. A." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Observation of ^(60)Fe in the Galactic Cosmic Rays", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-ShareAlike.\n\nPublished - ICRC2015_275.pdf
", "abstract": "The Cosmic Ray Isotope Spectrometer (CRIS) on the ACE spacecraft has been measuring the isotopic composition of Galactic Cosmic Rays (GCRs) since August 1997. Using selected data from the past seventeen years, we have a set of 2.95 x 10^5 ^(56)Fe nuclei in the energy interval ~240 to ~470 MeV/nucleon with excellent mass resolution characterized by \u03c3 = 0.24 amu. In this data set we have detected fifteen well resolved ^(60)Fe nuclei. ^(60)Fe is \u03b2^- unstable with a half-life of 2.6 million years. The detection of these radioactive nuclei permits us to set an upper limit of a few million years on the time between nucleosynthesis of these nuclei and their acceleration to cosmic-ray energies. A lower limit of ~10^5 years was established by the CRIS observation that the electron-capture isotope ^(59)Ni is essentially absent in the GCRs. These two limits bracket the nucleosynthesis-to-acceleration time to a range that is consistent with the emerging evidence that the bulk of GCRs are accelerated in associations of massive stars (OB associations).", "date": "2015-08", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20180828-122925311", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180828-122925311", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.22323/1.236.0275", "primary_object": { "basename": "ICRC2015_275.pdf", "url": "https://authors.library.caltech.edu/records/n5x3q-5qz02/files/ICRC2015_275.pdf" }, "pub_year": "2015", "author_list": "Israel, M. H.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/xjcas-8cr32", "eprint_id": 89497, "eprint_status": "archive", "datestamp": "2023-08-20 07:38:58", "lastmod": "2024-01-14 20:57:09", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Li-G", "name": { "family": "Li", "given": "G." } }, { "id": "Smith-C-W", "name": { "family": "Smith", "given": "C. W." } }, { "id": "Vourlidas-A", "name": { "family": "Vourlidas", "given": "A." }, "orcid": "0000-0002-8164-5948" } ] }, "title": "Investigating the Causes of Solar-Cycle Variations in Solar Energetic Particle Fluences and Composition", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-ShareAlike. \n\nThe work at Caltech was funded by NASA LWS TR&T grant NNX11A075G, NASA grant NNX13A66G, NASA contract NAS5-03131 from UC Berkeley, and by NSF grant 1156004. APL was supported by NASA grant NNX13AR20G/115828 and contract SA44889-26309 from UC Berkeley to JHU/APL. The University of Alabama/Huntsville was funded by NASA grant NNX15AJ93G. The University of New Hampshire was supported by NASA grant NNX13A66G. Participation by Goddard Space Flight Center was funded directly by NASA through its ACE, STEREO and LWS programs.\n\nPublished - ICRC2015_030.pdf
", "abstract": "Measurements with the ACE, STEREO, and GOES spacecraft during the first 5.8 years of solar cycle 24 show that the number of large Solar Energetic Particle (SEP) events is reduced by ~32% compared to this point of cycle 23, while the fluences of >10 MeV/nucleon ions from H to Ni are reduced by factors ranging from 4 to ~10. A comparison of H, O, and Fe energy spectra from the ten largest events of the two cycles shows that the spectral breaks that are typically observed in SEP energy spectra are occurring ~3 times lower in energy/nucleon than in cycle 23. We investigate the origin of these cycle-to-cycle fluence, spectral and composition differences by evaluating possible factors that include: 1) the properties of the associated CMEs; 2) the interplanetary magnetic field strength; and 3) the density of suprathermal seed particles. These properties are evaluated in the context of existing SEP acceleration models. We conclude that both the reduced magnetic field strength and the reduced seed particle densities are contributing to the reduction in SEP output during cycle 24. In particular, we point out that in the standard model for SEP shock acceleration the maximum energy achieved is a strong function of the rate at which protons are injected into the shock acceleration process.", "date": "2015-08", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20180910-131321667", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180910-131321667", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX11A075G" }, { "agency": "NASA", "grant_number": "NNX13A66G" }, { "agency": "NASA", "grant_number": "NAS5-03131" }, { "agency": "NSF", "grant_number": "AGS-1156004" }, { "agency": "NASA", "grant_number": "NNX13AR20G/115828" }, { "agency": "University of California, Berkeley", "grant_number": "SA44889-26309" }, { "agency": "NASA", "grant_number": "NNX15AJ93G" }, { "agency": "NASA", "grant_number": "NNX13A66G" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.22323/1.236.0030", "primary_object": { "basename": "ICRC2015_030.pdf", "url": "https://authors.library.caltech.edu/records/xjcas-8cr32/files/ICRC2015_030.pdf" }, "pub_year": "2015", "author_list": "Mewaldt, R. A.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/d9c7s-d6r21", "eprint_id": 89236, "eprint_status": "archive", "datestamp": "2023-08-20 07:38:16", "lastmod": "2024-01-14 20:43:13", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Sollitt-L-S", "name": { "family": "Sollitt", "given": "L. S." } }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Inferred Ionic Charge States for Solar Energetic Particle Events from 2012-2015 with ACE and STEREO", "ispublished": "unpub", "full_text_status": "public", "note": "Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-ShareAlike. \n\nThis work was supported by NASA grant NNX13A66G and NASA contract NA55-03131.\n\nPublished - ICRC2015_107.pdf
", "abstract": "Mean ionic charge states for SEP events can reflect source temperatures, stripping during acceleration and transport, and the composition of source material. Multi-spacecraft measurements of mean ionic charge states for single SEP events can also demonstrate longitudinal dependence depending on seed particle composition or acceleration conditions. in previous studies, we calculated inferred high-energy ionic charge states for SEP events. The analysis method fits the energy dependence of decay times for each element in SEP events, combined with charge-to-mass ratios relative to a calibration element, and derives mean charge state estimates for elements from O to Fe. Previously, we applied the method using ACE and STEREO data to SEP events through the beginning of 2012, in order to elucidate evidence on seed populations or longitudinal variations with charge state for single SEP events, with varying results. In this paper, we continue applying the method to new SEP events from 2012 to 2015 in the ACE and STEREO data. With the three spacecraft widely spread apart during this time period, there are fewer single SEP events with multi-spacecraft data, but the wide spacing allows more SEP candidate events to be considered, separately, than would be available with just a single spacecraft. Our new results for two SEP events continue to be consistent with observed correlation between Q(Fe) and Fe/O in previous events.", "date": "2015-08", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20180828-122925213", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180828-122925213", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX13A66G" }, { "agency": "NASA", "grant_number": "NA55-03131" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.22323/1.236.0107", "primary_object": { "basename": "ICRC2015_107.pdf", "url": "https://authors.library.caltech.edu/records/d9c7s-d6r21/files/ICRC2015_107.pdf" }, "pub_year": "2015", "author_list": "Labrador, A. W.; Sollitt, L. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/1mg2q-5fn50", "eprint_id": 89139, "eprint_status": "archive", "datestamp": "2023-08-20 07:38:02", "lastmod": "2024-01-14 20:41:42", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "Christina M. S." }, "orcid": "0000-0002-0978-8127" } ] }, "title": "Solar Energetic Particles and Solar Events - Lessons Learned from Multi-Spacecraft Observations", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-ShareAlike. \n\nThank you to NASA's Scientific Visualization Studio, the Space Weather Research Center (SWRC), the Community-Coordinated Modeling Center (CCMC), ENLIL and Dusan Odstrcil (GMU), Leila Mays (CUA) and Janet Luhmann (UCB) and NASA's Scientific Visualization Studio for the images of the ENLIL modeling of the 23 July 2012 event (https://svs.gsfc.nasa.gov/cgi-bin/details.cgi?aid=4167). Images of the 3 November 2011 CME were obtained from Helioviewer.org.\n\nPublished - ICRC2015_001.pdf
", "abstract": "Never before has the heliosphere and the Sun been so carefully monitored by so many spacecraft; in particular, the STEREO spacecraft have allowed simultaneous observations to be made routinely from multiple solar longitudes. The instrumentation on these spacecraft are continually observing solar activity and measuring the characteristics of solar energetic particle (SEP) events, providing a wealth of information on the acceleration and transport of SEPs. In February, 2011 the STEREO spacecraft reached a separation of 180\u00b0 and since then the entire solar surface has been visible. This unprecedented view has allowed observations of active regions and solar activity to continue after a region has rotated over the limb (as view from Earth) and more importantly, of regions emerging on the solar hemisphere not visible to Earth. The multiple viewpoints afforded by spectrometers and coronagraphs on the STEREO and near-Earth spacecraft has yielded more accurate information regarding the speed, direction, and evolution of coronal mass ejections (CMEs) which drive the interplanetary shocks that\ngenerate large SEP events. As is often the case when new capabilities are achieved or new regimes are explored, even while some questions are answered, more emerge. Among the surprises from multi-spacecraft SEP observations is the exceptionally fast longitudinal transport of particles. This paper reviews these multi-spacecraft capabilities, highlights some of the recent observations and surprises, and discusses the impact on the current understanding of energetic particle acceleration and transport.", "date": "2015-08", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20180824-100033835", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180824-100033835", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.22323/1.236.0001", "primary_object": { "basename": "ICRC2015_001.pdf", "url": "https://authors.library.caltech.edu/records/1mg2q-5fn50/files/ICRC2015_001.pdf" }, "pub_year": "2015", "author_list": "Cohen, Christina M. S." }, { "id": "https://authors.library.caltech.edu/records/647k0-08g45", "eprint_id": 89131, "eprint_status": "archive", "datestamp": "2023-08-20 07:37:53", "lastmod": "2024-01-14 20:41:22", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Vourlidas-A", "name": { "family": "Vourlidas", "given": "A." }, "orcid": "0000-0002-8164-5948" } ] }, "title": "A 360\u00b0 Survey of Solar Energetic Particle Events and One Extreme Event", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-ShareAlike. \n\nThe work at Caltech was supported by NASA grants NNX13A66G and NNX11A075G, NASA contract NAS5-03131, and NSF grant 1156004. The work at APL was supported by NASA grant NNX13AR20G/115828 and contract SA4889-26309 from UC Berkeley to JHU/APL. We appreciate the availability of NOAA GOES data and NASA OMNI data.\n\nPublished - ICRC2015_139.pdf
", "abstract": "We report on a 3-point longitudinal survey of Solar Energetic Particle (SEP) events during 2010-2014 using data from the STEREO and near-Earth spacecraft. During the period from August 2010 through September 2014 a total of 77 SEP events were identified with >10 MeV proton intensities that exceeded the NOAA criterion of >10 protons/(cm^2 sr-s), including 37 events at STEREO-A and 36 each at GOES and STEREO-A. Thirty-seven percent of the events reached this threshold intensity at more than one location. Unexpected solar activity in December 2006 provided an opportunity to cross-calibrate the STEREO and GOES sensors, demonstrating that the >10 MeV response for GOES was ~5%-8% greater than for the STEREOs, while the STEREO A&B responses agreed to within 2%. The July 23, 2012 event observed by STEREO-A was found to be the most intense SEP event in more than 20 years. We present observations of the longitude distribution of SEP events and fluences and compare properties of the July 23, 2012 event with those of the largest events of earlier solar cycles.", "date": "2015-08", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20180824-100032838", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180824-100032838", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX13A66G" }, { "agency": "NASA", "grant_number": "NNX11A075G" }, { "agency": "NASA", "grant_number": "NAS5-03131" }, { "agency": "NSF", "grant_number": "AGS-1156004" }, { "agency": "NASA", "grant_number": "NNX13AR20G/115828" }, { "agency": "NASA", "grant_number": "SA4889-26309" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.22323/1.236.0139", "primary_object": { "basename": "ICRC2015_139.pdf", "url": "https://authors.library.caltech.edu/records/647k0-08g45/files/ICRC2015_139.pdf" }, "pub_year": "2015", "author_list": "Mewaldt, R. A.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/gnrmp-0aa81", "eprint_id": 89502, "eprint_status": "archive", "datestamp": "2023-08-20 07:39:07", "lastmod": "2024-01-14 20:57:20", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Insights Into Particle Transport Obtained from Solar Energetic Particle Anisotropies", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-ShareAlike. \n\nThis work was supported by the National Aeronautics and Space Administration (NASA) at the California Institute of Technology and the Jet Propulsion Laboratory under sub-contract SA2715-26309 from the University of California at Berkeley under NASA contract NAS5-03131, and by NASA award NNX08AK87G. We thank the STEREO/PLASTIC (NASA contract NAS5-00132), MAG, and SWEA teams for making their data publicly available, and Lan Jian and Ying Liu for helpful discussions.\n\nPublished - ICRC2015_072.pdf
", "abstract": "Solar energetic particle (SEP) pitch-angle distributions are shaped by the competing effects of magnetic focusing and scattering as the particles travel through interplanetary space. Therefore, measurements of SEP anisotropies provide insight into particle transport and can probe interplanetary conditions at remote locations from the observer. The Low Energy Telescopes (LETs) onboard the twin STEREO spacecraft measure pitch-angle distributions for protons and heavier ions at energies of about 2-12 MeV/nucleon. Using these instruments, we have observed a wide variety of SEP anisotropies, such as bidirectional flows within interplanetary coronal mass ejections, sunward-flowing particles when the spacecraft was magnetically connected to the back side of a distant shock, and loss-cone distributions in which particles with large pitch angles magnetically mirror at an interplanetary field enhancement that is too weak to reflect particles with the smallest pitch angles. One of the more puzzling observations is unusual oscillations on a timescale of several minutes in the width of a beamed distribution at the onset of the very large 23 July 2012 SEP event. We report LET anisotropy observations at both STEREO spacecraft during the extreme event of 23 July 2012, in which a large range of anisotropies were observed at various times during the event, and discuss their implications for SEP transport.", "date": "2015-08", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20180910-131322207", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180910-131322207", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA/JPL/Caltech" }, { "agency": "NASA", "grant_number": "SA2715-26309" }, { "agency": "NASA", "grant_number": "NAS5-03131" }, { "agency": "NASA", "grant_number": "NNX08AK87G" }, { "agency": "NASA", "grant_number": "NAS5-00132" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.22323/1.236.0072", "primary_object": { "basename": "ICRC2015_072.pdf", "url": "https://authors.library.caltech.edu/records/gnrmp-0aa81/files/ICRC2015_072.pdf" }, "pub_year": "2015", "author_list": "Leske, R. A.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/82q84-pvn72", "eprint_id": 89225, "eprint_status": "archive", "datestamp": "2023-08-20 07:38:06", "lastmod": "2024-01-14 20:42:44", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Heikkila-B-C", "name": { "family": "Heikkila", "given": "B. C." } }, { "id": "Lal-Nand", "name": { "family": "Lal", "given": "N." } }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } }, { "id": "J\u00f3hannesson-G", "name": { "family": "J\u00f3hannesson", "given": "G." } }, { "id": "Moskalenko-I-V", "name": { "family": "Moskalenko", "given": "I. V." } }, { "id": "Orlando-E", "name": { "family": "Orlando", "given": "E." } }, { "id": "Porter-T-A", "name": { "family": "Porter", "given": "T. A." } } ] }, "title": "Voyager 1 Observations of Galactic Cosmic Rays in the Local Interstellar Medium: Energy Density and Ionization Rates", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-ShareAlike. \n\nVoyager data analysis is supported by NASA Grant NNN12AA012. GALPROP development is supported by NASA Grants NNX13AC47G and NNX10AE78G.\n\nPublished - ICRC2015_318.pdf
", "abstract": "Voyager 1 (V1) has been in the local interstellar medium (LISM) since August, 2012. We present the galactic cosmic-ray (GCR) energy spectra of most elements from H through Ni, and also of electrons, for a period exceeding two years. The V1 energy spectra define the newly-revealed, low-energy part of the interstellar spectra of nuclei down to ~3 MeV nuc^(-1) and of electrons down to ~5 MeV. We use a leaky-box model and three GALPROP models of the local interstellar spectra of nuclei, constrained by the V1 observations at low energies and by observations at 1 AU from other missions at higher energies, to estimate the cosmic-ray energy density and the ionization rate of atomic H in the local interstellar medium by nuclei above 3 MeV nuc ^(-1). We use a model of the interstellar electron spectrum that approximately matches the V1 observations to derive the electron contributions to the cosmic-ray energy density and the ionization rate of atomic H above 3 MeV. We find that the total cosmic-ray energy density is in the range 0.82-0.97 eV cm^(-3), which includes a contribution of 0.023 eV cm^(-3) from electrons. We find the cosmic-ray ionization rate of atomic H to be in the range 1.45-1.58 X 10^-17) s^(-1), which is a factor of more than 10 below the cosmic-ray ionization rate in diffuse interstellar clouds based on astrochemistry methods. We discuss possible reasons for this difference.", "date": "2015-08", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20180828-122924218", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180828-122924218", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNN12AA012" }, { "agency": "NASA", "grant_number": "NNX13AC47G" }, { "agency": "NASA", "grant_number": "NNX10AE78G" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.22323/1.236.0318", "primary_object": { "basename": "ICRC2015_318.pdf", "url": "https://authors.library.caltech.edu/records/82q84-pvn72/files/ICRC2015_318.pdf" }, "pub_year": "2015", "author_list": "Cummings, A. C.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/0zdjq-jgn09", "eprint_id": 89244, "eprint_status": "archive", "datestamp": "2023-08-20 07:38:47", "lastmod": "2024-01-14 20:43:32", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Murphy-R-P", "name": { "family": "Murphy", "given": "R. P." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Bose-R-G", "name": { "family": "Bose", "given": "R. G." } }, { "id": "Brandt-T-J", "name": { "family": "Brandt", "given": "T. J." }, "orcid": "0000-0003-4087-1786" }, { "id": "Dowkontt-P-F", "name": { "family": "Dowkontt", "given": "P. F." } }, { "id": "Hams-T", "name": { "family": "Hams", "given": "T." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Link-J-T", "name": { "family": "Link", "given": "J. T." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Rauch-B-F", "name": { "family": "Rauch", "given": "B. F." } }, { "id": "Sakai-Kenichi", "name": { "family": "Sakai", "given": "K." } }, { "id": "Sasaki-Makoto", "name": { "family": "Sasaki", "given": "M." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Ward-J-E", "name": { "family": "Ward", "given": "J. E." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Abundances of Ultra-Heavy Galactic Cosmic Rays from the SuperTIGER Instrument", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-ShareAlike. \n\nThis research was supported by NASA under grants NNX09AC17G, NNX14AB25G, the Peggy and Steve Fossett Foundation, and the McDonnell Center for the Space Sciences at Washington University in St. Louis. \n\nWe thank the NASA Columbia Scientific Balloon Facility, the NASA Balloon Program Office, and the NSF United States Antarctic Program for the excellent and highly professional efforts that resulted in the record long-duration balloon flight and recovery for SuperTIGER.\n\nPublished - ICRC2015_438.pdf
", "abstract": "The SuperTIGER (Trans-Iron Galactic Element Recorder) experiment was launched on a long-duration balloon flight from Williams Field, Antarctica, on December 8, 2012. SuperTIGER flew for a total of 55 days at a mean atmospheric depth of 4.4 g/cm^2. The instrument measured the abundances of galactic cosmic rays in the charge (Z) range Z \u2265 10 with excellent charge resolution, displaying well resolved individual element peaks for 10 \u2264 Z \u2264 40. SuperTIGER collected \u223c 3.95 \u00d7 10^6 Iron nuclei, \u223c 7.1 times as many as detected by TIGER. We will present details of the data analysis techniques and the elemental abundances in the range 30 \u2264 Z \u2264 40. The data presented contain more than 600 events in this charge range, with charge resolution at _(26)Fe of < 0.18 cu. Our measured abundances are generally consistent with those measured by TIGER and ACE. Our results confirm the earlier results from TIGER, supporting a model of cosmic-ray origin in OB associations, with preferential acceleration of refractory elements over volatile elements.", "date": "2015-08", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20180828-122926089", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180828-122926089", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX09AC17G" }, { "agency": "NASA", "grant_number": "NNX14AB25G" }, { "agency": "Peggy and Steve Fossett Foundation" }, { "agency": "McDonnell Center for the Space Sciences" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.22323/1.236.0438", "primary_object": { "basename": "ICRC2015_438.pdf", "url": "https://authors.library.caltech.edu/records/0zdjq-jgn09/files/ICRC2015_438.pdf" }, "pub_year": "2015", "author_list": "Murphy, R. P.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/fxecn-fc671", "eprint_id": 53850, "eprint_status": "archive", "datestamp": "2023-08-20 05:26:30", "lastmod": "2024-01-13 16:13:53", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Tomsick-J-A", "name": { "family": "Tomsick", "given": "John A." }, "orcid": "0000-0001-5506-9855" }, { "id": "Bellm-E-C", "name": { "family": "Bellm", "given": "Eric" }, "orcid": "0000-0001-8018-5348" }, { "id": "F\u00fcrst-F", "name": { "family": "Fuerst", "given": "Felix" }, "orcid": "0000-0003-0388-0560" }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona" }, "orcid": "0000-0003-2992-8024" }, { "id": "Miyasaka-Hiromasa", "name": { "family": "Miyasaka", "given": "Hiromasa" }, "orcid": "0000-0002-8074-4186" }, { "id": "Tendulkar-S-P", "name": { "family": "Tendulkar", "given": "Shriharsh" }, "orcid": "0000-0003-2548-2926" }, { "id": "Bhalerao-V-B", "name": { "family": "Bhalerao", "given": "Varun" }, "orcid": "0000-0002-6112-7609" }, { "id": "Chakrabarty-D", "name": { "family": "Chakrabarty", "given": "Deepto" }, "orcid": "0000-0001-8804-8946" }, { "id": "King-A", "name": { "family": "King", "given": "Ashlee" } }, { "id": "Miller-J-M", "name": { "family": "Miller", "given": "Jon M." } }, { "id": "Natalucci-L", "name": { "family": "Natalucci", "given": "Lorenzo" }, "orcid": "0000-0002-6601-9543" }, { "id": "Stern-D", "name": { "family": "Stern", "given": "Daniel" }, "orcid": "0000-0003-2686-9241" } ] }, "title": "NuSTAR Observations of X-Ray Binaries", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2014 owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence. \n\nPublished on: 2015 March 16.\n\nPublished - Integral2014_021.pdf
Submitted - 1501.03534v1.pdf
", "abstract": "As of 2014 August, the Nuclear Spectroscopic Telescope Array (NuSTAR) had observed \u224830 X-ray binaries either as part of the planned program, as targets of opportunity, or for instrument calibration. The main science goals for the observations include probing the inner part of the accretion disk and constraining black hole spins via reflection components, providing the first observations of hard X-ray emission from quiescent Low Mass X-ray Binaries (LMXBs), measuring cyclotron lines from accreting pulsars, and studying type I X-ray bursts from neutron stars. Here, we describe the science objectives in more depth and give an overview of the NuSTAR observations that have been carried out to achieve the objectives. These include observation of four \"IGR\" High Mass X-ray Binaries (HMXBs) discovered by INTEGRAL. We also summarize the results that have been obtained and their implications. Among the IGR HMXBs, we focus on the discovery of a cyclotron line in the spectrum of IGR J17544-2619.", "date": "2015-03-16", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20150119-174132481", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150119-174132481", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA Einstein Fellowship" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" }, { "id": "NuSTAR" } ] }, "doi": "10.22323/1.228.0021", "primary_object": { "basename": "1501.03534v1.pdf", "url": "https://authors.library.caltech.edu/records/fxecn-fc671/files/1501.03534v1.pdf" }, "related_objects": [ { "basename": "Integral2014_021.pdf", "url": "https://authors.library.caltech.edu/records/fxecn-fc671/files/Integral2014_021.pdf" } ], "pub_year": "2015", "author_list": "Tomsick, John A.; Bellm, Eric; et el." }, { "id": "https://authors.library.caltech.edu/records/v4gx0-qk340", "eprint_id": 89144, "eprint_status": "archive", "datestamp": "2023-08-20 02:49:06", "lastmod": "2024-01-14 20:41:55", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "K\u00fchnel-Matthias", "name": { "family": "K\u00fchnel", "given": "Matthias" } }, { "id": "Kretschmar-Peter", "name": { "family": "Kretschmar", "given": "Peter" }, "orcid": "0000-0001-9840-2048" }, { "id": "Nespoli-Elisa", "name": { "family": "Nespoli", "given": "Elisa" } }, { "id": "Okazaki-Atsuo-T", "name": { "family": "Okazaki", "given": "Atsuo T." } }, { "id": "Sch\u00f6nherr-Gabriele", "name": { "family": "Sch\u00f6nherr", "given": "Gabriele" } }, { "id": "Wilson-Hodge-Colleen-A", "name": { "family": "Wilson-Hodge", "given": "Colleen A." }, "orcid": "0000-0002-8585-0084" }, { "id": "Falkner-Sebastian", "name": { "family": "Falkner", "given": "Sebastian" }, "orcid": "0000-0001-5209-991X" }, { "id": "Brand-Thorsten", "name": { "family": "Brand", "given": "Thorsten" } }, { "id": "Anders-Friedrich", "name": { "family": "Anders", "given": "Friedrich" } }, { "id": "Schwarm-Fritz-Walter", "name": { "family": "Schwarm", "given": "Fritz-Walter" } }, { "id": "Kreykenbohm-Ingo", "name": { "family": "Kreykenbohm", "given": "Ingo" }, "orcid": "0000-0001-7335-1803" }, { "id": "M\u00fcller-Sebastian", "name": { "family": "M\u00fcller", "given": "Sebastian" } }, { "id": "Pottschmidt-Katja", "name": { "family": "Pottschmidt", "given": "Katja" }, "orcid": "0000-0002-4656-6881" }, { "id": "F\u00fcrst-Felix", "name": { "family": "F\u00fcrst", "given": "Felix" }, "orcid": "0000-0003-0388-0560" }, { "id": "Grinberg-Victoria", "name": { "family": "Grinberg", "given": "Victoria" }, "orcid": "0000-0003-2538-0188" }, { "id": "Wilms-J\u00f6rn", "name": { "family": "Wilms", "given": "J\u00f6rn" }, "orcid": "0000-0003-2065-5410" } ] }, "title": "Be X-ray Binary Outburst Zoo II", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-ShareAlike. \n\nM. K\u00fchnel acknowledges funding by the Bundesministerium f\u00fcr Wirtschaft und Technologie under Deutsches Zentrum f\u00fcr Luft- und Raumfahrt grant 50OR1113. The figures shown in this paper were created using the SLXfig module, which was developed by John E. Davis. We thank the organizers of the 10th Integral Workshop \"A Synergistic View of the High Energy Sky\" for the the useful discussions triggered by this interesting and well organized workshop.\n\nPublished - Integral2014_078.pdf
", "abstract": "We have continued our recently started systematic study of Be X-ray binary (BeXRB) outbursts. Specifically, we are developing a catalogue of outbursts including their basic properties based on nearly all available X-ray all-sky-monitors. These properties are derived by fitting asymmetric Gaussians to the outburst lightcurves. This model describes most of the outbursts covered by our preliminary catalogue well; only 13% of all datasets show more complex outburst shapes. Analyzing the basic properties, we reveal a strong correlation between the outburst length and the reached peak flux. As an example, we discuss possible models describing the observed correlation in EXO 2030+375.", "date": "2014-09", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20180824-100034333", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180824-100034333", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Bundesministerium f\u00fcr Wirtschaft und Technologie (BMWi)" }, { "agency": "Deutsches Zentrum f\u00fcr Luft- und Raumfahrt (DLR)", "grant_number": "50OR1113" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.22323/1.228.0078", "primary_object": { "basename": "Integral2014_078.pdf", "url": "https://authors.library.caltech.edu/records/v4gx0-qk340/files/Integral2014_078.pdf" }, "pub_year": "2014", "author_list": "K\u00fchnel, Matthias; Kretschmar, Peter; et el." }, { "id": "https://authors.library.caltech.edu/records/7p5fg-h6r29", "eprint_id": 51762, "eprint_status": "archive", "datestamp": "2023-08-20 02:25:55", "lastmod": "2024-01-13 16:12:29", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Forster-K", "name": { "family": "Forster", "given": "Karl" }, "orcid": "0000-0001-5800-5531" }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Dodd-S-R", "name": { "family": "Dodd", "given": "Suzanne R." } }, { "id": "Stern-D", "name": { "family": "Stern", "given": "Daniel K." }, "orcid": "0000-0003-2686-9241" }, { "id": "Miyasaka-Hiromasa", "name": { "family": "Miyasaka", "given": "Hiromasa" }, "orcid": "0000-0002-8074-4186" }, { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "Kristin K." }, "orcid": "0000-0003-1252-4891" }, { "id": "Grefenstette-B-W", "name": { "family": "Grefenstette", "given": "Brian W." }, "orcid": "0000-0002-1984-2932" }, { "id": "Markwardt-C-B", "name": { "family": "Markwardt", "given": "Craig B." }, "orcid": "0000-0001-9803-3879" }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "William W." } }, { "id": "Marshall-F-E", "name": { "family": "Marshall", "given": "Francis E." } } ] }, "title": "NuSTAR observatory science operations: on-orbit acclimation", "ispublished": "unpub", "full_text_status": "public", "keywords": "NuSTAR, NASA small explorer, X-ray optics, CZT detectors, Science Operations, Metrology", "note": "\u00a9 2014 SPIE. \n\nDate Published: 6 August 2014. \n\nThis work was supported under NASA contract No. NNG08FD60C, and made use of data from the NuSTAR mission, a project led by the California Institute of Technology, managed by the Jet Propulsion Laboratory, and funded by the National Aeronautics and Space Administration. We thank the NuSTAR operations, Software and Calibration teams for support with the execution and analysis of these observations. This research has made use of the NuSTAR Data Analysis Software (NuSTARDAS) jointly developed by the ASI Science Data Center (ASDC, Italy) and the California Institute of\nTechnology (USA).\n\nPublished - Forster_2014p91490R.pdf
", "abstract": "The Nuclear Spectroscopic Telescope Array (NuSTAR) is the first focusing high energy (3-79 keV) X-ray observatory. The NuSTAR project is led by Caltech, which hosts the Science Operations Center (SOC), with mission operations managed by UCB Space Sciences Laboratory. We present an overview of NuSTAR science operations and describe the on-orbit performance of the observatory. The SOC is enhancing science operations to serve the community with a guest observing program beginning in 2015. We present some of the challenges and approaches taken by the SOC to operating a full service space observatory that maximizes the scientific return from the mission.", "date": "2014-08-06", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 91490R", "id_number": "CaltechAUTHORS:20141114-102829066", "isbn": "978-0-8194-9617-1", "book_title": "Observatory Operations - Strategies, Processes, and Systems V", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141114-102829066", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG08FD60C" }, { "agency": "NASA/JPL/Caltech" } ] }, "local_group": { "items": [ { "id": "NuSTAR" }, { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Peck-A-B", "name": { "family": "Peck", "given": "Alison B." } }, { "id": "Benn-C-R", "name": { "family": "Benn", "given": "Chris R." } }, { "id": "Seaman-R-L", "name": { "family": "Seaman", "given": "Robert L." } } ] }, "doi": "10.1117/12.2056916", "primary_object": { "basename": "Forster_2014p91490R.pdf", "url": "https://authors.library.caltech.edu/records/7p5fg-h6r29/files/Forster_2014p91490R.pdf" }, "pub_year": "2014", "author_list": "Forster, Karl; Harrison, Fiona A.; et el." }, { "id": "https://authors.library.caltech.edu/records/fp2pb-ex945", "eprint_id": 58212, "eprint_status": "archive", "datestamp": "2023-08-20 01:59:29", "lastmod": "2024-01-13 16:21:28", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "An-Hongjun", "name": { "family": "An", "given": "Hongjun" } }, { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "Kristin K." }, "orcid": "0000-0003-1252-4891" }, { "id": "Westergaard-N-J", "name": { "family": "Westergaard", "given": "Niels J." } }, { "id": "Boggs-S-E", "name": { "family": "Boggs", "given": "Steven E." }, "orcid": "0000-0001-9567-4224" }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "Finn E." }, "orcid": "0000-0001-5679-1946" }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "William W." } }, { "id": "Hailey-C-J", "name": { "family": "Hailey", "given": "Charles J." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Stern-D", "name": { "family": "Stern", "given": "Daniel K." }, "orcid": "0000-0003-2686-9241" }, { "id": "Zhang-W-W", "name": { "family": "Zhang", "given": "William W." }, "orcid": "0000-0002-1426-9698" } ] }, "title": "In-flight PSF calibration of the NuSTAR hard X-ray optics", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2014 SPIE. Date Published: 24 July 2014.\n\nThis work was supported under NASA Contract No. NNG08FD60C, and made use of data from the NuSTAR mission, a project led by the California Institute of Technology, managed by the Jet Propulsion Laboratory, and funded by the National Aeronautics and Space Administration. We thank the NuSTAR Operations, Software and Calibration teams for support with the execution and analysis of these observations. This research has made use of the NuSTAR Data Analysis Software (NuSTARDAS) jointly developed by the ASI Science Data Center (ASDC, Italy) and the California Institute of Technology (USA).\n\nPublished - An_2014p91141Q.pdf
Submitted - 1406.7419v1.pdf
", "abstract": "We present results of the point spread function (PSF) calibration of the hard X-ray optics of the Nuclear Spectroscopic Telescope Array (NuSTAR). Immediately post-launch, NuSTAR has observed bright point sources such as Cyg X-1, Vela X-1, and Her X-1 for the PSF calibration. We use the point source observations taken at several off-axis angles together with a ray-trace model to characterize the in-orbit angular response, and find that the ray-trace model alone does not fit the observed event distributions and applying empirical corrections to the ray-trace model improves the fit significantly. We describe the corrections applied to the ray-trace model and show that the uncertainties in the enclosed energy fraction (EEF) of the new PSF model is (approximately less than) 3% for extraction apertures of R (approximately greater than) 60\u2033 with no significant energy dependence. We also show that the PSF of the NuSTAR optics has been stable over a period of ~300 days during its in-orbit operation.", "date": "2014-07-24", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 91441Q", "id_number": "CaltechAUTHORS:20150612-100131748", "isbn": "9780819496126", "book_title": "Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150612-100131748", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG08FD60C" }, { "agency": "NASA/JPL/Caltech" } ] }, "other_numbering_system": { "items": [ { "id": "2014-43", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "NuSTAR" }, { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Takahashi-Tadayuki", "name": { "family": "Takahashi", "given": "Tadayuki" } }, { "id": "den-Herder-J-W", "name": { "family": "den Herder", "given": "Jan-Willem" } }, { "id": "Bautz-M-W", "name": { "family": "Bautz", "given": "Mark" } } ] }, "doi": "10.1117/12.2055481", "primary_object": { "basename": "1406.7419v1.pdf", "url": "https://authors.library.caltech.edu/records/fp2pb-ex945/files/1406.7419v1.pdf" }, "related_objects": [ { "basename": "An_2014p91141Q.pdf", "url": "https://authors.library.caltech.edu/records/fp2pb-ex945/files/An_2014p91141Q.pdf" } ], "pub_year": "2014", "author_list": "An, Hongjun; Madsen, Kristin K.; et el." }, { "id": "https://authors.library.caltech.edu/records/ewars-w4e12", "eprint_id": 58269, "eprint_status": "archive", "datestamp": "2023-08-20 01:59:39", "lastmod": "2024-01-13 16:22:16", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Kitaguchi-Takao", "name": { "family": "Kitaguchi", "given": "Takao" } }, { "id": "Bhalerao-V-B", "name": { "family": "Bhalerao", "given": "Varun" }, "orcid": "0000-0002-6112-7609" }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. Rick" } }, { "id": "Forster-K", "name": { "family": "Forster", "given": "Karl" }, "orcid": "0000-0001-5800-5531" }, { "id": "Grefenstette-B-W", "name": { "family": "Grefenstette", "given": "Brian W." }, "orcid": "0000-0002-1984-2932" }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "Kristin K." }, "orcid": "0000-0003-1252-4891" }, { "id": "Mao-Peter-H", "name": { "family": "Mao", "given": "Peter H." } }, { "id": "Miyasaka-Hiromasa", "name": { "family": "Miyasaka", "given": "Hiromasa" }, "orcid": "0000-0002-8074-4186" }, { "id": "Rana-V-R", "name": { "family": "Rana", "given": "Vikram R." }, "orcid": "0000-0003-1703-8796" } ] }, "title": "Inflight performance and calibration of the NuSTAR CdZnTe pixel detectors", "ispublished": "unpub", "full_text_status": "public", "keywords": "NuSTAR, CdZnTe, High-energy X-rays", "note": "\u00a9 2014 Society of Photo-Optical Instrumentation Engineers (SPIE). Date Published: 24 July 2014.\n\nThis work was supported under NASA Contract No. NNG08FD60C, and made use of data from the NuSTAR mission, a project led by the California Institute of Technology, managed by the Jet Propulsion Laboratory, and funded by the National Aeronautics and Space Administration. We thank the NuSTAR Operations, Software and Calibration teams for support with the execution and analysis of these observations. This research has made use of the NuSTAR Data Analysis Software (NuSTARDAS) jointly developed by the ASI Science Data Center (ASDC, Italy) and the California Institute of Technology (USA). T.K. was supported by Japan Society for the Promotion of Science (JSPS) Grant-in-Aid for Young Scientists (B) (No. 24740185).\n\nPublished - Kitaguchi_2014p91441R.pdf
", "abstract": "The Nuclear Spectroscopic Telescope Array (NuSTAR) satellite is a NASA Small Explorer mission designed to operate the first focusing high-energy X-ray (3-79 keV) telescope in orbit. Since the launch in June 2012, all the NuSTAR components have been working normally. The focal plane module is equipped with an 155Eu radioactive source to irradiate the CdZnTe pixel detectors for independent calibration separately from optics. The inflight spectral calibration of the CdZnTe detectors is performed with the onboard 155Eu source. The derived detector performance agrees well with ground-measured data. The in-orbit detector background rate is stable and the lowest among past high-energy X-ray instruments.", "date": "2014-07-24", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 91441R", "id_number": "CaltechAUTHORS:20150616-083335514", "isbn": "978-0-8194-9612-6", "book_title": "Space Telescopes and Instrumentation - Ultraviolet to Gamma Ray", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150616-083335514", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG08FD60C" }, { "agency": "NASA/Caltech/JPL" }, { "agency": "Japan Society for the Promotion of Science (JSPS)", "grant_number": "24740185" } ] }, "other_numbering_system": { "items": [ { "id": "2014-42", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "NuSTAR" }, { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Takahashi-Tadayuki", "name": { "family": "Takahashi", "given": "Tadayuki" } }, { "id": "den-Herder-J-W-A", "name": { "family": "den Herder", "given": "Jan-Willem A." } }, { "id": "Bautz-M-W", "name": { "family": "Bautz", "given": "Mark" } } ] }, "corp_creators": { "items": [ "NuSTAR Team" ] }, "doi": "10.1117/12.2057342", "primary_object": { "basename": "Kitaguchi_2014p91441R.pdf", "url": "https://authors.library.caltech.edu/records/ewars-w4e12/files/Kitaguchi_2014p91441R.pdf" }, "pub_year": "2014", "author_list": "Kitaguchi, Takao; Bhalerao, Varun; et el." }, { "id": "https://authors.library.caltech.edu/records/6zz9y-j0h75", "eprint_id": 84186, "eprint_status": "archive", "datestamp": "2023-08-20 01:59:57", "lastmod": "2024-01-14 19:15:57", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "Kristin K." }, "orcid": "0000-0003-1252-4891" }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "An-Hongjun", "name": { "family": "An", "given": "Hongjun" } }, { "id": "Boggs-S-E", "name": { "family": "Boggs", "given": "Steven E." }, "orcid": "0000-0001-9567-4224" }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "Finn E." }, "orcid": "0000-0001-5679-1946" }, { "id": "Cook-R", "name": { "family": "Cook", "given": "Rick" } }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "William W." } }, { "id": "Forster-K", "name": { "family": "Forster", "given": "Karl" }, "orcid": "0000-0001-5800-5531" }, { "id": "F\u00fcrst-F", "name": { "family": "Fuerst", "given": "Felix" }, "orcid": "0000-0003-0388-0560" }, { "id": "Grefenstette-B-W", "name": { "family": "Grefenstette", "given": "Brian" }, "orcid": "0000-0002-1984-2932" }, { "id": "Hailey-C-J", "name": { "family": "Hailey", "given": "Charles J." } }, { "id": "Kitaguchi-Takao", "name": { "family": "Kitaguchi", "given": "Takao" } }, { "id": "Markwardt-C-B", "name": { "family": "Markwardt", "given": "Craig" }, "orcid": "0000-0001-9803-3879" }, { "id": "Mao-Peter-H", "name": { "family": "Mao", "given": "Peter" } }, { "id": "Miyasaka-Hiromasa", "name": { "family": "Miyasaka", "given": "Hiromasa" }, "orcid": "0000-0002-8074-4186" }, { "id": "Rana-V-R", "name": { "family": "Rana", "given": "Vikram" }, "orcid": "0000-0003-1703-8796" }, { "id": "Stern-D", "name": { "family": "Stern", "given": "Daniel K." }, "orcid": "0000-0003-2686-9241" }, { "id": "Zhang-W-W", "name": { "family": "Zhang", "given": "William W." }, "orcid": "0000-0002-1426-9698" }, { "id": "Zoglauer-A-C", "name": { "family": "Zoglauer", "given": "Andreas" } }, { "id": "Walton-D-J", "name": { "family": "Walton", "given": "Dominic" }, "orcid": "0000-0001-5819-3552" }, { "id": "Westergaard-N-J", "name": { "family": "Westergaard", "given": "Niels J." } } ] }, "title": "The nuclear spectroscopic telescope array (NuSTAR) high-energy X-ray mission", "ispublished": "unpub", "full_text_status": "public", "keywords": "NuSTAR, X-ray optics, CZT", "note": "\u00a9 2014 SPIE. \n\nThis work was supported under NASA Contract No. NNG08FD60C, and made use of data from the NuSTAR mission, a project led by the California Institute of Technology, managed by the Jet Propulsion Laboratory, and funded by the National Aeronautics and Space Administration. We thank the NuSTAR Operations, Software and Calibration teams for support with the execution and analysis of these observations. This research has made use of the NuSTAR Data Analysis Software (NuSTARDAS) jointly developed by the ASI Science Data Center (ASDC, Italy) and the California Institute of Technology (USA).\n\nPublished - 91441P.pdf
", "abstract": "The Nuclear Spectroscopic Telescope Array (NuSTAR) mission was launched on 2012 June 13 and is the first focusing high-energy X-ray telescope in orbit operating above ~10 keV. NuSTAR flies two co-aligned Wolter-I conical approximation X-ray optics, coated with Pt/C and W/Si multilayers, and combined with a focal length of 10.14 meters this enables operation from 3-79 keV. The optics focus onto two focal plane arrays, each consisting of 4 CdZnTe pixel detectors, for a field of view of 12.5 arcminutes. The inherently low background associated with concentrating the X-ray light enables NuSTAR to probe the hard X-ray sky with a more than 100-fold improvement in sensitivity, and with an effective point spread function FWHM of 18 arcseconds (HPD ~1), NuSTAR provides a leap of improvement in resolution over the collimated or coded mask instruments that have operated in this bandpass. We present in-orbit performance details of the observatory and highlight important science results from the first two years of the mission.", "date": "2014-07-24", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 91441P", "id_number": "CaltechAUTHORS:20180109-101045374", "isbn": "9780819496126", "book_title": "Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180109-101045374", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG08FD60C" }, { "agency": "NASA/JPL/Caltech" } ] }, "local_group": { "items": [ { "id": "NuSTAR" }, { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Takahashi-Tadayuki", "name": { "family": "Takahashi", "given": "Tadayuki" } }, { "id": "den-Herder-J-W-A", "name": { "family": "den Herder", "given": "Jan-Willem A." } }, { "id": "Bautz-M", "name": { "family": "Bautz", "given": "Mark" } } ] }, "doi": "10.1117/12.2056643", "primary_object": { "basename": "91441P.pdf", "url": "https://authors.library.caltech.edu/records/6zz9y-j0h75/files/91441P.pdf" }, "pub_year": "2014", "author_list": "Madsen, Kristin K.; Harrison, Fiona A.; et el." }, { "id": "https://authors.library.caltech.edu/records/ys8cb-6tf85", "eprint_id": 68626, "eprint_status": "archive", "datestamp": "2023-08-20 01:15:01", "lastmod": "2024-01-13 16:52:10", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Li-Gang", "name": { "family": "Li", "given": "G." }, "orcid": "0000-0001-9313-251X" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Desai-M-I", "name": { "family": "Desai", "given": "M. I." }, "orcid": "0000-0002-7318-6008" }, { "id": "Haggerty-D-K", "name": { "family": "Haggerty", "given": "D. K." }, "orcid": "0000-0001-6395-8943" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Zank-G-P", "name": { "family": "Zank", "given": "G. P." }, "orcid": "0000-0002-4642-6192" } ] }, "title": "Fe Enhancements in SEP Onsets: Flare/CME Mixture or Transport Effect?", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Copyright 1988 - 2016 - Astronomical Society of the Pacific.\n\nThis work was supported by NASA under LWS TR&T grant\nNNX07-AP69G (APL), and other grants including NNX09AP74A (UAH), NNX08AI11G (Caltech), and NNX08AK87G (SwRI) and NSF grants including AGS-1135432(UAH) and ATM-0551127 (SwRI).\n\nPublished - 2014-01.pdf
", "abstract": "During the onset phases of SEP events, the Fe/O ratio is often observed to be initially enhanced (\u02dc1) over typical SEP values, followed by a decline to values close to typical averages over entire events (Fe/O \u02dc0.1). Two mechanisms have been suggested to explain this behavior, namely (1) a two-step process with an initial injection of \"flare\" particles with high Fe/O followed by shock-accelerated particles with lower Fe/O, and (2) a transport effect wherein the lower charge-to-mass ratio of Fe vs. O results in faster transport of Fe to the observer, leading to enhanced Fe/O in the early stages of the event.\nDistinguishing between these two scenarios is important to building a basic picture of processes taking place in large SEP events. We have carried out a detailed study of 17 large SEP events where energetic particle data were fitted by a state-of-the-art model whose computed time-intensity profiles were compared to the observed profiles of H, He, O, and Fe over a very broad energy range. We find that the observed decrease in Fe/O during the rise phase can be reasonably fitted by the transport model where the differences in Fe vs. O transport are due to the slope of the turbulence spectrum of the interplanetary magnetic field (IMF).", "date": "2014-06", "date_type": "published", "publisher": "Astronomical Society of the Pacific", "place_of_pub": "San Francisco, CA", "pagerange": "137-144", "id_number": "CaltechAUTHORS:20160623-081846895", "isbn": "978-1-58381-852-7", "book_title": "Outstanding Problems in Heliophysics: From Coronal Heating to the Edge of the Heliosphere", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20160623-081846895", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX07-AP69G" }, { "agency": "NASA", "grant_number": "NNX09AP74A" }, { "agency": "NASA", "grant_number": "NNX08AI11G" }, { "agency": "NSF", "grant_number": "AGS-1135432" }, { "agency": "NSF", "grant_number": "ATM-0551127" } ] }, "other_numbering_system": { "items": [ { "id": "2014-01", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Hu-Q", "name": { "family": "Hu", "given": "Q." } }, { "id": "Zank-G-P", "name": { "family": "Zank", "given": "G. P." } } ] }, "primary_object": { "basename": "2014-01.pdf", "url": "https://authors.library.caltech.edu/records/ys8cb-6tf85/files/2014-01.pdf" }, "pub_year": "2014", "author_list": "Mason, G. M.; Li, G.; et el." }, { "id": "https://authors.library.caltech.edu/records/z1fh6-jhd35", "eprint_id": 68652, "eprint_status": "archive", "datestamp": "2023-08-20 00:50:14", "lastmod": "2024-01-13 16:52:16", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Li-Gang", "name": { "family": "Li", "given": "G." }, "orcid": "0000-0001-9313-251X" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Desai-M-I", "name": { "family": "Desai", "given": "M. I." }, "orcid": "0000-0002-7318-6008" }, { "id": "Haggerty-D-K", "name": { "family": "Haggerty", "given": "D. K." }, "orcid": "0000-0001-6395-8943" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Zank-G-P", "name": { "family": "Zank", "given": "G. P." }, "orcid": "0000-0002-4642-6192" } ] }, "title": "Fe Enhancements in SEP Onsets: Flare/CME Mixture or Transport Effect?", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2014 Astronomical Society of the Pacific.\n\nThis work was supported by NASA under LWS TR&T grant\nNNX07-AP69G (APL), and other grants including NNX09AP74A (UAH), NNX08AI11-G (Caltech), and NNX08AK87G (SwRI) and NSF grants including AGS-1135432 (UAH) and ATM-0551127 (SwRI). Figure 1 is reproduced by permission of the AAS.\n\nPublished - 2014-01.pdf
", "abstract": "During the onset phases of SEP events, the Fe/O ratio is often observed to be initially enhanced (~1) over typical SEP values, followed by a decline to values close to typical averages over entire events (Fe/O ~0.1). Two mechanisms have been suggested to explain this behavior, namely (1) a two-step process with an initial injection\nof \"flare\" particles with high Fe/O followed by shock-accelerated particles with lower Fe/O, and (2) a transport effect wherein the lower charge-to-mass ratio of Fe vs.\nO results in faster transport of Fe to the observer, leading to enhanced Fe/O in the early stages of the event. Distinguishing between these two scenarios is important to building a basic picture of processes taking place in large SEP events. We have carried out a detailed study of 17 large SEP events where energetic particle data were fitted by a state-of-the-art model whose computed time-intensity profiles were compared to the observed profiles of H, He, O, and Fe over a very broad energy range. We find that the\nobserved decrease in Fe/O during the rise phase can be reasonably fitted by the transport model where the differences in Fe vs. O transport are due to the slope of the turbulence spectrum of the interplanetary magnetic field (IMF).", "date": "2014-05", "date_type": "published", "publisher": "Astronomical Society of the Pacific", "id_number": "CaltechAUTHORS:20160624-090842763", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20160624-090842763", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX07AP69G" }, { "agency": "NASA", "grant_number": "NNX09AP74A" }, { "agency": "UAH", "grant_number": "NNX08A111G" }, { "agency": "NASA", "grant_number": "NNX08AK87G" }, { "agency": "NSF", "grant_number": "AGS-1135432" }, { "agency": "NSF", "grant_number": "ATM-0551127" } ] }, "other_numbering_system": { "items": [ { "id": "2014-01", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Hu-Qiang", "name": { "family": "Hu", "given": "Qiang" } }, { "id": "Zank-G-P", "name": { "family": "Zank", "given": "Gary P." } } ] }, "primary_object": { "basename": "2014-01.pdf", "url": "https://authors.library.caltech.edu/records/z1fh6-jhd35/files/2014-01.pdf" }, "pub_year": "2014", "author_list": "Mason, G. M.; Li, G.; et el." }, { "id": "https://authors.library.caltech.edu/records/1f7ep-bmb60", "eprint_id": 78451, "eprint_status": "archive", "datestamp": "2023-08-22 11:13:20", "lastmod": "2023-10-26 00:07:02", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Richardson-I-G", "name": { "family": "Richardson", "given": "I. G." }, "orcid": "0000-0002-3855-3634" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Cane-H-V", "name": { "family": "Cane", "given": "H. V." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "> 25 MeV Proton Events Observed by the High Energy Telescopes on the STEREO A and B Spacecraft and/or at Earth During the First \u223c Seven Years of the STEREO Mission", "ispublished": "unpub", "full_text_status": "restricted", "keywords": "Solar energetic particles; STEREO; SOHO", "note": "\u00a9 2014 Springer. \n\nReceived: 27 September 2013. Accepted: 27 March 2014. Published online: 15 April 2014. \n\nWe thank Janet Luhmann of the University of California, Berkeley, for her steadfast support as the Principal Investigator of the STEREO/IMPACT investigation. The work at GSFC, Caltech and JPL was supported by NASA (Caltech and JPL were funded under subcontract SA2715-26309 from\nthe University of California, Berkeley, under NASA Contract NAS5-03131). The LASCO CME catalog at http://cdaw.gsfc.nasa.gov/CME_list/ is generated and maintained at the CDAW Data Center by NASA and The Catholic University of America in cooperation with the Naval Research Laboratory. We particularly appreciate the efforts by S. Yashiro and colleagues to generate daily summary movies of SOHO and STEREO observations (http://cdaw.gsfc.nasa.gov/stereo/daily_movies/), which were very helpful in verifying the solar sources of the SEP events. The CACTUS CME catalog is maintained by the Solar Influences Data Analysis Center at the Royal Observatory of Belgium. The SOHO/ERNE data were obtained from the Space Research Laboratory, University of Turku (http://www.srl.utu.fi/erne_data/). The SOHO/EPHIN project is supported under grant No. 50 OC 1302 by the German Bundesminister f\u00fcr Wirtschaft through the Deutsches Zentrum f\u00fcr Luft- und Raumfahrt (DLR). SOHO is a project of international cooperation between ESA and NASA.", "abstract": "Using observations from the High Energy Telescopes (HETs) on the STEREO A and B spacecraft and similar observations from near-Earth spacecraft, we summarize the properties of more than 200 individual >\u200925 MeV solar proton events, some detected by multiple spacecraft, that occurred from the beginning of the STEREO mission in October 2006 to December 2013, and provide a catalog of these events and their solar sources and associations. Longitudinal dependencies of the electron and proton peak intensities and delays to onset and peak intensity relative to the solar event have been examined for 25 three-spacecraft particle events. Expressed as Gaussians, peak intensities fall off with longitude with \u03c3=47\u00b114\u2218 for 0.7\u2009\u2013\u20094 MeV electrons, and \u03c3=43\u00b113\u2218 for 14\u2009\u2013\u200924 MeV protons. Several particle events are discussed in more detail, including one on 3 November 2011, in which \u223c\u200925 MeV protons filled the inner heliosphere within 90 minutes of the solar event, and another on 7 March 2012, in which we demonstrate that the first of two coronal mass ejections that erupted from an active region within \u223c\u20091 hour was associated with particle acceleration. Comparing the current Solar Cycle 24 with the previous cycle, the first >\u200925 MeV proton event was detected at Earth in the current solar cycle around one year after smoothed sunspot minimum, compared with a delay of only two months in Cycle 23. Otherwise, solar energetic particle event occurrence rates were reasonably similar during the rising phases of Cycles 23 and 24. However, the rate declined in 2013, reflecting the decline in sunspot number since the peak in the northern-hemisphere sunspot number in November 2011. Observations in late 2013 suggest that the rate may be rising again in association with an increase in the southern sunspot number.", "date": "2014", "date_type": "published", "publisher": "Springer", "place_of_pub": "New York, NY", "pagerange": "437-485", "id_number": "CaltechAUTHORS:20170622-072655135", "isbn": "978-1-4939-2037-2", "book_title": "Coronal Magnetometry", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20170622-072655135", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" }, { "agency": "Caltech/JPL", "grant_number": "SA2715-26309" }, { "agency": "NASA", "grant_number": "NAS5-03131" }, { "agency": "Deutsches Zentrum f\u00fcr Luft- und Raumfahrt (DLR)", "grant_number": "50 OC 1302" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Tomczyk-S", "name": { "family": "Tomczyk", "given": "Steven" } }, { "id": "Zhang-Jie", "name": { "family": "Zhang", "given": "Jie" } }, { "id": "Bastian-T", "name": { "family": "Bastian", "given": "Timothy" } } ] }, "doi": "10.1007/978-1-4939-2038-9_27", "pub_year": "2014", "author_list": "Richardson, I. G.; von Rosenvinge, T. T.; et el." }, { "id": "https://authors.library.caltech.edu/records/4gs9g-dm322", "eprint_id": 68650, "eprint_status": "archive", "datestamp": "2023-08-19 22:48:29", "lastmod": "2024-01-13 16:52:14", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-Richard-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Cummings-Alan-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Cohen-Christina-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Labrador-Allan-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-Mark-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Christian-Eric-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "von-Rosenvinge-Tycho-T", "name": { "family": "von Rosenvinge", "given": "T. T." }, "orcid": "0000-0001-7320-4141" } ] }, "title": "Observations of Loss-Cone Pitch Angle Distributions of Solar Energetic Particles", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2014 Astronomical Society of the Pacific.\n\nThis work was supported by the National Aeronautics and\nSpace Administration (NASA) at Caltech and JPL under sub-contract SA2715-26309\nfrom the University of California at Berkeley under NASA contract NAS5-03131, and\nby NASA award NNX08AK87G. We thank the PLASTIC (NASA contract NAS5-\n00132), MAG, and SWEA investigators on STEREO for making their data publicly\navailable, and the organizers of the 12th Annual International\n\nPublished - 2014-13.pdf
", "abstract": "Pitch angle distributions of solar energetic particles (SEPs) in interplanetary space sometimes exhibit a loss cone in which an incident beam of particles is partially mirrored; particles with large pitch angles are reflected while those with smaller pitch angles are not. Mirroring requires a magnetic field enhancement, but if the field strength is not large enough to turn around particles with the smallest pitch angles or if these particles scatter before reaching their more distant mirror points, a loss cone forms. Such distributions therefore provide information on the interplanetary environment far from the spacecraft. The Low Energy Telescopes onboard the twin STEREO spacecraft have detected loss-cone distributions in several SEP events. We present some of these and other interesting anisotropy observations, and discuss their implications for SEP transport. In particular, we find that the shapes of the pitch angle distributions generally vary with energy and species, with lower energy particles usually more anisotropic than higher energy particles. Comparison with theory may be used to determine the energy and rigidity dependences of the pitch angle diffusion coefficient.", "date": "2014", "date_type": "published", "publisher": "Astronomical Society of the Pacific", "place_of_pub": "San Francisco, CA", "pagerange": "117-122", "id_number": "CaltechAUTHORS:20160624-085036638", "isbn": "978-1-58381-852-7", "book_title": "Outstanding Problems in Heliophysics: From Coronal Heating to the Edge of the Atmosphere", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20160624-085036638", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "SA2715-26309" }, { "agency": "NASA", "grant_number": "NAS5-03131" }, { "agency": "NASA", "grant_number": "NNX08AK87G" } ] }, "other_numbering_system": { "items": [ { "id": "2014-13", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Hu-Qiang", "name": { "family": "Hu", "given": "Qiang" } }, { "id": "Zank-G-P", "name": { "family": "Zank", "given": "Gary P." }, "orcid": "0000-0002-4642-6192" } ] }, "primary_object": { "basename": "2014-13.pdf", "url": "https://authors.library.caltech.edu/records/4gs9g-dm322/files/2014-13.pdf" }, "pub_year": "2014", "author_list": "Leske, R. A.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/fkyew-7td72", "eprint_id": 56098, "eprint_status": "archive", "datestamp": "2023-08-19 22:46:21", "lastmod": "2024-01-13 16:17:11", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Margon-B", "name": { "family": "Margon", "given": "Bruce" }, "orcid": "0000-0002-7837-3363" }, { "id": "Levitan-D", "name": { "family": "Levitan", "given": "David" } }, { "id": "Prince-T-A", "name": { "family": "Prince", "given": "Thomas A." }, "orcid": "0000-0002-8850-3627" }, { "id": "Hallinan-G", "name": { "family": "Hallinan", "given": "Gregg" }, "orcid": "0000-0002-7083-4049" } ] }, "title": "Magnetic Cataclysmic Variables Discovered in the Palomar Transient Factory", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2014 Astronomical Society of the Pacific.\n\nPublished - 2014-04.pdf
Submitted - 1304.4585.pdf
", "abstract": "The Palomar Transient Factory proves to be a prolific source of Magnetic Cataclysmic Variables, selected by their distinctive photometric variability, and followed up spectroscopically. Here, we present six new candidate systems, together with preliminary photometric periods and spectra.", "date": "2014", "date_type": "published", "publisher": "Astronomical Society of the Pacific", "place_of_pub": "Orem, UT", "pagerange": "389-392", "id_number": "CaltechAUTHORS:20150325-162231329", "isbn": "978-1-58381-864-0", "book_title": "Stella Novae: Past and Future Decades", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150325-162231329", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "2014-04", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" }, { "id": "Palomar-Transient-Factory" } ] }, "contributors": { "items": [ { "id": "Woudt-P-A", "name": { "family": "Woudt", "given": "P. A." } }, { "id": "Ribiero-V-A-R-M", "name": { "family": "Ribiero", "given": "V. A. R. M." } } ] }, "corp_creators": { "items": [ "PTF Collaboration" ] }, "doi": "10.48550/arXiv.1304.4585", "primary_object": { "basename": "1304.4585.pdf", "url": "https://authors.library.caltech.edu/records/fkyew-7td72/files/1304.4585.pdf" }, "related_objects": [ { "basename": "2014-04.pdf", "url": "https://authors.library.caltech.edu/records/fkyew-7td72/files/2014-04.pdf" } ], "pub_year": "2014", "author_list": "Margon, Bruce; Levitan, David; et el." }, { "id": "https://authors.library.caltech.edu/records/kcx14-jdr38", "eprint_id": 66290, "eprint_status": "archive", "datestamp": "2023-08-19 14:38:35", "lastmod": "2024-01-13 16:47:48", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Desai-M-I", "name": { "family": "Desai", "given": "M. I." }, "orcid": "0000-0002-7318-6008" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" } ] }, "title": "Particle acceleration in the heliosphere", "ispublished": "unpub", "full_text_status": "public", "keywords": "Particle acceleration: interplanetary space \u2013 Interplanetary space: energetic particles, pickup ions, solar wind plasma \u2013 Shock waves: interplanetary", "note": "\u00a9 2013 American Institute of Physics. \n\nThis work was supported by NASA contract NNX10AT75G. For permission to reprint copyrighted material, we thank the American Institute of Physics (Fig. 1) and the American Geophysical Union (Figs. 3 a, b). Figs. 2a, b, and 4a are reproduced with permission of the AAS. Figure 4b is reproduced with kind permission from Springer Science+Business Media B.V. from Space Science Rev., vol 130, 2007, 207, On the Differences in Composition between Solar Energetic Particles and Solar Wind, by Mewaldt, R. A.; Cohen, C. M. S.; Mason, G. M.; Cummings, A. C.; Desai, M. I.; Leske, R. A.; Raines, J.; Stone, E. C.; Wiedenbeck, M. E.; von Rosenvinge, T. T.; Zurbuchen, T. H., Figure 3 (right panel), \u00a9 2007 by Springer.\n\nPublished - 1.4792550.pdf
", "abstract": "The heliosphere is filled with supersonic solar wind that forms shocks wherever it encounters obstacles, be they a high speed Coronal Mass Ejection (CME), or regions where fastsolar wind encounters slower-moving solar wind. Energetic particles (> 10s of keV/nuc to 10s of MeV/nuc) associated with these shocks form a test bed for understanding particle acceleration since the shock properties can often be measured and energetic particle composition compared to candidate seed populations. Over the past 15-20 years a wide body of evidence has emerged showing that generally the seed population is the suprathermal ion pool at energies above the bulk solar wind. Understanding the interplanetary suprathermal ion population is therefore a critical step in fully understanding the physical mechanisms that accelerate particles in interplanetary space.", "date": "2013-02-07", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "117-120", "id_number": "CaltechAUTHORS:20160420-081048128", "isbn": "978-0-7354-1137-1", "book_title": "Centenary Symposium 2012: Discovery of Cosmic Rays", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20160420-081048128", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX10AT75G" } ] }, "other_numbering_system": { "items": [ { "id": "2013-22", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Ormes-J-F", "name": { "family": "Ormes", "given": "Jonathan F." } } ] }, "doi": "10.1063/1.4792550", "primary_object": { "basename": "1.4792550.pdf", "url": "https://authors.library.caltech.edu/records/kcx14-jdr38/files/1.4792550.pdf" }, "pub_year": "2013", "author_list": "Mason, G. M.; Desai, M. I.; et el." }, { "id": "https://authors.library.caltech.edu/records/6aqr9-6vz12", "eprint_id": 37151, "eprint_status": "archive", "datestamp": "2023-08-19 14:38:17", "lastmod": "2024-01-13 05:59:35", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "Alan C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "Edward C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Anomalous Cosmic Rays", "ispublished": "unpub", "full_text_status": "public", "keywords": "cosmic rays, anomalous cosmic rays, solar wind termination shock", "note": "\u00a9 2013 American Institute of Physics.\n\n We thank Jon Ormes for his assistance in writing this paper. This work was supported by NASA under contract NNN12AA012.\n\nPublished - APC000097.pdf
", "abstract": "Anomalous cosmic rays (ACRs) first started showing up in observations 40 years ago. Within a few years a paradigm was developed to explain their origin: they begin their life as interstellar neutral atoms that drift into the heliosphere, become singly ionized by chargeexchange with a solar wind ion or by photoionization, are picked up by the expanding solar wind, and accelerated to the observed energies by diffusive shock acceleration at the solar wind termination shock. This paradigm became widely accepted and withstood the tests of further observations until 16 December 2004, when Voyager 1 crossed the termination shock and didn't find their source. In August 2007, Voyager 2 crossed the termination shock and also did not find the source location of ACRs. Clearly, the source location was not at the termination shock where the two Voyagers crossed. Alternative models have been proposed with acceleration elsewhere on the shock or by other acceleration processes in the heliosheath. We discuss the latest observations of ACRs from the Voyager spacecraft and hopefully shed more light on this ongoing puzzle.", "date": "2013-02-07", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, N.Y.", "pagerange": "97-101", "id_number": "CaltechAUTHORS:20130226-134144383", "isbn": "978-0-7354-1137-1", "book_title": "Centenary Symposium 2012: Discovery of Cosmic Rays", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130226-134144383", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNN12AA012" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Ormes-J-F", "name": { "family": "Ormes", "given": "Jonathan F." } } ] }, "doi": "10.1063/1.4792547", "primary_object": { "basename": "APC000097.pdf", "url": "https://authors.library.caltech.edu/records/6aqr9-6vz12/files/APC000097.pdf" }, "pub_year": "2013", "author_list": "Cummings, Alan C. and Stone, Edward C." }, { "id": "https://authors.library.caltech.edu/records/w4hm9-8ms85", "eprint_id": 66317, "eprint_status": "archive", "datestamp": "2023-08-19 14:38:40", "lastmod": "2024-01-13 16:48:19", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "McDonald-F-B", "name": { "family": "McDonald", "given": "Frank B." } }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Heikkila-B-C", "name": { "family": "Heikkila", "given": "B. C." } }, { "id": "Lal-N", "name": { "family": "Lal", "given": "N." } } ] }, "title": "Galactic cosmic rays in the distant heliosphere", "ispublished": "unpub", "full_text_status": "public", "keywords": "galactic cosmic rays, anomalous cosmic rays, solar modulation, heliosphere, heliopause, heliosheath", "note": "\u00a9 2013 American Institute of Physics. \n\nPublished online 07 February 2013. \n\nProf. Frank McDonald died not long after the meeting and was unable to write this paper himself. The Editor wrote this paper by transcribing it from the presentation made at the meeting. Any errors should be ascribed to the Editor and not to the authors of the paper.\n\nPublished - 1.4792545.pdf
", "abstract": "The small flotilla of spacecraft: Pioneers 10 and 11 and Voyagers 1 and 2 (V1 and V2) that have traveled from 1 AU to the distant heliosphere continue the quest of Victor Hess to understand the nature of this radiation that comes to us from beyond the confines of our solar system. At this time V1 and V2 are traveling deeper into the heliosheath and approaching its outer boundary - the heliopause. In the heliosheath the intensity of 2.5 - 60 MeV GCR electrons has risen significantly above detector background levels and provides an important new diagnostic tool for exploring cosmic ray transport in this previously unexplored region of space. Over the past seven months the intensity of GCR ions and electrons at V1 have remained constant after a steady, 5.5 year exponential increase whose rate varied with particle species. Is this an indication that V1 is approaching the heliopause?", "date": "2013-02-07", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "85-88", "id_number": "CaltechAUTHORS:20160420-130923910", "isbn": "978-0-7354-1137-1", "book_title": "Centenary Symposium 2012: Discovery of Cosmic Rays", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20160420-130923910", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Ormes-J-F", "name": { "family": "Ormes", "given": "J. F." } } ] }, "doi": "10.1063/1.4792545", "primary_object": { "basename": "1.4792545.pdf", "url": "https://authors.library.caltech.edu/records/w4hm9-8ms85/files/1.4792545.pdf" }, "pub_year": "2013", "author_list": "McDonald, Frank B.; Webber, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/1ez9a-rp487", "eprint_id": 66372, "eprint_status": "archive", "datestamp": "2023-08-19 14:38:45", "lastmod": "2024-01-13 16:48:55", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Elemental and isotopic composition measurements of galactic cosmic rays", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2013 American Institute of Physics. \n\nPublished online 07 February 2013.\n\nPublished - 1.4792559.pdf
", "abstract": "Measurements of the relative abundances of elements and their isotopes in galactic cosmic rays, which include both stable and long lived radioactive species, have led to a variety of insights into the nature of the cosmic ray source, the mechanisms involved in accelerating particles to high energies, and characteristics of their transport in the Galaxy. Some key developments that have contributed to the present understanding of cosmic rays are summarized.", "date": "2013-02-07", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "150-155", "id_number": "CaltechAUTHORS:20160421-140445185", "isbn": "978-0-7354-1137-1", "book_title": "Centenary Symposium on Discovery of Cosmic Rays", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20160421-140445185", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Ormes-J-F", "name": { "family": "Ormes", "given": "Jonathan F." } } ] }, "doi": "10.1063/1.4792559", "primary_object": { "basename": "1.4792559.pdf", "url": "https://authors.library.caltech.edu/records/1ez9a-rp487/files/1.4792559.pdf" }, "pub_year": "2013", "author_list": "Wiedenbeck, M. E." }, { "id": "https://authors.library.caltech.edu/records/p63jr-10t10", "eprint_id": 39109, "eprint_status": "archive", "datestamp": "2023-08-19 13:58:20", "lastmod": "2024-01-13 06:02:07", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Luhmann-J-G", "name": { "family": "Luhmann", "given": "J. G." }, "orcid": "0000-0003-0626-9353" }, { "id": "Odstrcil-D", "name": { "family": "Odstrcil", "given": "D." } }, { "id": "Vourlidas-A", "name": { "family": "Vourlidas", "given": "A." }, "orcid": "0000-0002-8164-5948" } ] }, "title": "Solar energetic particles and their variability from the sun and beyond", "ispublished": "unpub", "full_text_status": "public", "keywords": "Solar energetic particles, particle acceleration, coronal mass ejections", "note": "\u00a9 2013 AIP Publishing LLC.\n\nThis work was supported by NASA at Caltech under\ngrants NNX8AI11G and NNX06AC21G, and under\nsubcontract SA2715-26309 from UC Berkeley under\nNASA contract NAS5-03131; at JHU/APL by NASA\ngrant NNX10AT75G, UC Berkeley subcontract\nSA4889-26309, and NSF SHINE grant 1156138; and at NRL under grant NNH11AR711. We appreciate the\navailability of GOES data from NOAA, EPHIN data\nfrom the University of Kiel, and LASCO data from the\nCatholic University website.\n\nPublished - APC000116.pdf
", "abstract": "With the onset of solar cycle 24 activity STEREO and near-Earth spacecraft are now measuring many multi-spacecraft solar particle events. We present examples of time-intensity distributions, energy spectra, fits to longitude distributions, a combined imaging/in-situ study, and MHD modeling of one event. Implications of these new results are discussed.", "date": "2013", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "116-121", "id_number": "CaltechAUTHORS:20130626-134934610", "isbn": "978-0-7354-1163-0", "book_title": "Solar Wind 13: Proceedings of the Thirteenth International Solar Wind Conference", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130626-134934610", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX8AI11G" }, { "agency": "NASA", "grant_number": "NNX06AC21G" }, { "agency": "NASA", "grant_number": "SA2715-26309" }, { "agency": "NASA", "grant_number": "NAS5-03131" }, { "agency": "NASA", "grant_number": "NNX10AT75G" }, { "agency": "NASA", "grant_number": "SA4889-26309" }, { "agency": "NSF", "grant_number": "AGS-1156138" }, { "agency": "NASA", "grant_number": "NNH11AR711" } ] }, "other_numbering_system": { "items": [ { "id": "2013-21", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Zank-G-P", "name": { "family": "Zank", "given": "Gary P." } }, { "id": "Borovsky-J", "name": { "family": "Borovsky", "given": "Joe" } }, { "id": "Bruno-R", "name": { "family": "Bruno", "given": "Roberto" } }, { "id": "Cirtain-J", "name": { "family": "Cirtain", "given": "Jonathan" } }, { "id": "Cranmer-S", "name": { "family": "Cranmer", "given": "Steve" } }, { "id": "Elliott-H", "name": { "family": "Elliott", "given": "Heather" } }, { "id": "Giacalone-J", "name": { "family": "Giacalone", "given": "Joe" } }, { "id": "Gonzalez-W", "name": { "family": "Gonzalez", "given": "Walter" } }, { "id": "Li-Gang", "name": { "family": "Li", "given": "Gang" } }, { "id": "Marsch-E", "name": { "family": "Marsch", "given": "Eckart" } }, { "id": "Moebius-E", "name": { "family": "Moebius", "given": "Eberhard" } }, { "id": "Pogorelov-N", "name": { "family": "Pogorelov", "given": "Nick" } }, { "id": "Spann-J", "name": { "family": "Spann", "given": "Jim" } }, { "id": "Verkhoglyadova-O", "name": { "family": "Verkhoglyadova", "given": "Olga" } } ] }, "doi": "10.1063/1.4811002", "primary_object": { "basename": "APC000116.pdf", "url": "https://authors.library.caltech.edu/records/p63jr-10t10/files/APC000116.pdf" }, "pub_year": "2013", "author_list": "Mewaldt, R. A.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/x23bh-srn28", "eprint_id": 39089, "eprint_status": "archive", "datestamp": "2023-08-19 13:58:15", "lastmod": "2024-01-13 06:02:03", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Dotson-B", "name": { "family": "Dotson", "given": "B." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "A survey of anisotropic energetic particle flows observed by STEREO", "ispublished": "unpub", "full_text_status": "public", "keywords": "Solar energetic particles, anisotropies, STEREO", "note": "\u00a9 2013 AIP Publishing LLC.\n\nThis work was supported by the National Aeronautics\nand Space Administration (NASA) at Caltech and JPL\nunder sub-contract SA2715-26309 from the University\nof California at Berkeley under NASA contract NAS5-\n03131, and by NASA award NNX08AK87G. We thank\nthe MAG investigators on STEREO formaking their data\npublicly available.\n\nPublished - APC000227.pdf
", "abstract": "The Low Energy Telescopes (LETs) onboard the twin STEREO spacecraft have been measuring the anisotropies of energetic particles since before the beginning of solar cycle 24. Large unidirectional anisotropies often appear at the onset of magnetically well-connected solar energetic particle (SEP) events, suggesting beamed particles with relatively little scattering. Also, long-lasting bidirectional flows are seen during the decay phase of several SEP events. Some of these instances appear to be within interplanetary coronal mass ejections (ICMEs), as indicated by characteristics such as magnetic field rotations or bidirectional suprathermal electrons. We present preliminary findings from a survey of LET proton anisotropy observations, which illustrate that bidirectional flows appear more likely to come from directions far from the nominal Parker spiral direction than do unidirectional beams, consistent with previous studies. Individual cases that show unusual intensity depletions perpendicular to the magnetic field or pitch angle distributions otherwise indicative of magnetic mirroring are presented in more detail.", "date": "2013", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "227-230", "id_number": "CaltechAUTHORS:20130625-131632943", "isbn": "978-0-7354-1163-0", "book_title": "Solar Wind 13: Proceedings of the Thirteenth International Solar Wind Conference", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130625-131632943", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "SA2715-26309" }, { "agency": "University of California Berkeley" }, { "agency": "NASA", "grant_number": "NAS5-03131" }, { "agency": "NASA", "grant_number": "NNX08AK87G" } ] }, "other_numbering_system": { "items": [ { "id": "2013-19", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Zank-G-P", "name": { "family": "Zank", "given": "Gary P." } }, { "id": "Borovsky-J", "name": { "family": "Borovsky", "given": "Joe" } }, { "id": "Bruno-R", "name": { "family": "Bruno", "given": "Roberto" } }, { "id": "Cirtain-J", "name": { "family": "Cirtain", "given": "Jonathan" } }, { "id": "Cranmer-S", "name": { "family": "Cranmer", "given": "Steve" } }, { "id": "Elliott-H", "name": { "family": "Elliott", "given": "Heather" } }, { "id": "Giacalone-J", "name": { "family": "Giacalone", "given": "Joe" } }, { "id": "Gonzalez-W", "name": { "family": "Gonzalez", "given": "Walter" } }, { "id": "Li-Gang", "name": { "family": "Li", "given": "Gang" } }, { "id": "Marsch-E", "name": { "family": "Marsch", "given": "Eckart" } }, { "id": "Moebius-E", "name": { "family": "Moebius", "given": "Eberhard" } }, { "id": "Pogorelov-P", "name": { "family": "Pogorelov", "given": "Nick" } }, { "id": "Spann-J", "name": { "family": "Spann", "given": "Jim" } }, { "id": "Verkhoglyadova-O", "name": { "family": "Verkhoglyadova", "given": "Olga" } } ] }, "doi": "10.1063/1.4811029", "primary_object": { "basename": "APC000227.pdf", "url": "https://authors.library.caltech.edu/records/x23bh-srn28/files/APC000227.pdf" }, "pub_year": "2013", "author_list": "Leske, R. A.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/nhgph-rsn68", "eprint_id": 39166, "eprint_status": "archive", "datestamp": "2023-08-19 13:58:24", "lastmod": "2024-01-13 06:02:11", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Solar energetic particle characteristics and their dependence on longitude in solar cycle 24", "ispublished": "unpub", "full_text_status": "public", "keywords": "cosmic ray composition, cosmic ray energy spectra, solar cosmic ray particles", "note": "\u00a9 2013 AIP Publishing LLC.\n\n\nThis work was supported by NASA under grants\nNNX11A0756, NNX08AI11G and NNX10AQ68G at\nCaltech, NNX10AT75G at JHUAPL, subcontracts\nSA2715-26309 from UC Berkeley (NASA contract\nNAS5-03131) and by NSF grant AGS-1156004 at\nCaltech and AGS-1156138 at JHUAPL. We thank\nNariaki Nitta for useful discussions regarding solar\nsource identifications.\n\nPublished - APC000151.pdf
", "abstract": "In previous solar cycles, most studies examining the longitude dependence of solar energetic particle (SEP) event characteristics (such as composition and spectral hardness) have involved statistical analysis of single-point measurements. With the significant separation between the two STEREO and near-Earth spacecraft during solar cycle 24, these SEP characteristics can be examined simultaneously from multiple vantage points. Using SEP measurements from sensors on STEREO and ACE, we have examined the longitude dependence of the Fe/O abundance ratio at 10 MeV/nuc and the oxygen spectral index for energies above 10 MeV/nuc. Longitudinal patterns were sought that support or refute the scenarios put forth by Tylka et al. and Cane et al. to explain the Fe-enriched large SEP events of cycle 23. Unfortunately few Fe-enriched events have occurred in cycle 24 and their longitudinal behavior is not entirely consistent with either of the proposed scenarios.", "date": "2013", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "151-154", "id_number": "CaltechAUTHORS:20130701-130656583", "isbn": "978-0-7354-1163-0", "book_title": "Solar Wind 13: Proceedings of the Thirteenth International Solar Wind Conference", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130701-130656583", "rights": "Copyright 2013 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.\n\n\nThe following article appeared in SOLAR WIND 13: Proceedings of the Thirteenth International Solar Wind Conference and may be found at http://dx.doi.org/10.1063/1.4811010", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX11A0756" }, { "agency": "NASA", "grant_number": "NNX08AI11G" }, { "agency": "NASA", "grant_number": "NNX10AQ68G" }, { "agency": "NASA", "grant_number": "NNX10AT75G" }, { "agency": "NASA", "grant_number": "SA2715-26309" }, { "agency": "NASA", "grant_number": "NAS5-03131" }, { "agency": "NSF", "grant_number": "AGS-1156004" }, { "agency": "NSF", "grant_number": "AGS-1156138" } ] }, "other_numbering_system": { "items": [ { "id": "2013-20", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Zank-G-P", "name": { "family": "Zank", "given": "Gary P." } }, { "id": "Borovsky-J", "name": { "family": "Borovsky", "given": "Joe" } }, { "id": "Bruno-R", "name": { "family": "Bruno", "given": "Roberto" } }, { "id": "Cirtain-J", "name": { "family": "Cirtain", "given": "Jonathan" } }, { "id": "Cranmer-S", "name": { "family": "Cranmer", "given": "Steve" } }, { "id": "Elliott-H", "name": { "family": "Elliott", "given": "Heather" } }, { "id": "Giacalone-J", "name": { "family": "Giacalone", "given": "Joe" } }, { "id": "Gonzalez-W", "name": { "family": "Gonzalez", "given": "Walter" } }, { "id": "Li-Gang", "name": { "family": "Li", "given": "Gang" } }, { "id": "Marsch-E", "name": { "family": "Marsch", "given": "Eckart" } }, { "id": "Moebius-E", "name": { "family": "Moebius", "given": "Eberhard" } }, { "id": "Pogorelov-N", "name": { "family": "Pogorelov", "given": "Nick" } }, { "id": "Spann-J", "name": { "family": "Spann", "given": "Jim" } }, { "id": "Verkhoglyadova-O", "name": { "family": "Verkhoglyadova", "given": "Olga" } } ] }, "doi": "10.1063/1.4811010", "primary_object": { "basename": "APC000151.pdf", "url": "https://authors.library.caltech.edu/records/nhgph-rsn68/files/APC000151.pdf" }, "pub_year": "2013", "author_list": "Cohen, C. M. S.; Mason, G. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/7g4e5-wys26", "eprint_id": 89235, "eprint_status": "archive", "datestamp": "2023-08-19 13:04:33", "lastmod": "2024-01-14 20:43:10", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Grinberg-V", "name": { "family": "Grinberg", "given": "V." }, "orcid": "0000-0003-2538-0188" }, { "id": "Hell-N", "name": { "family": "Hell", "given": "N." } }, { "id": "Wilms-J", "name": { "family": "Wilms", "given": "J." }, "orcid": "0000-0003-2065-5410" }, { "id": "Rodriguez-J", "name": { "family": "Rodriguez", "given": "J." } }, { "id": "Pottschmidt-K", "name": { "family": "Pottschmidt", "given": "K." }, "orcid": "0000-0002-4656-6881" }, { "id": "Nowak-M-A", "name": { "family": "Nowak", "given": "M. A." }, "orcid": "0000-0001-6923-1315" }, { "id": "B\u00f6ck-M", "name": { "family": "B\u00f6ck", "given": "M." } }, { "id": "Bodaghee-A", "name": { "family": "Bodaghee", "given": "A." }, "orcid": "0000-0002-7315-3732" }, { "id": "Cadolle-Bel-M", "name": { "family": "Cadolle Bel", "given": "M." } }, { "id": "F\u00fcrst-F", "name": { "family": "F\u00fcrst", "given": "F." }, "orcid": "0000-0003-0388-0560" }, { "id": "Hanke-M", "name": { "family": "Hanke", "given": "M." } }, { "id": "K\u00fchnel-M", "name": { "family": "K\u00fchnel", "given": "M." } }, { "id": "Laurent-P", "name": { "family": "Laurent", "given": "P." } }, { "id": "Markoff-S-B", "name": { "family": "Markoff", "given": "S. B." }, "orcid": "0000-0001-9564-0876" }, { "id": "Markowitz-Aaron", "name": { "family": "Markowitz", "given": "A." } }, { "id": "Marcu-D-M", "name": { "family": "Marcu", "given": "D. M." } }, { "id": "Pooley-G-G", "name": { "family": "Pooley", "given": "G. G." } }, { "id": "Popp-A", "name": { "family": "Popp", "given": "A." } }, { "id": "Rothschild-R-E", "name": { "family": "Rothschild", "given": "R. E." } }, { "id": "Tomsick-J-A", "name": { "family": "Tomsick", "given": "J. A." }, "orcid": "0000-0001-5506-9855" } ] }, "title": "Cygnus X-1: shedding light on the spectral variability of a black hole", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-ShareAlike. \n\nThis work has been partially funded by the Bundesministerium f\u00fcr Wirtschaft und Technologie under Deutsches Zentrum f\u00fcr Luft- und Raumfahrt Grants 50 OR 1007 and 50 OR 1113 and by the European Commission through ITN 215212 \"Black Hole Universe\", was partially completed by LLNL under Contract DE-AC52-07NA27344. K.P. and D.M.M. acknowledge support from NASA grant NNX09AT28G for INTEGRAL's Cycle 7 Guest Observer Programme. The data analysis presented in this work was performed with ISIS 1.6.2 [5]. We thank John E. Davis for the development of the slxfig module used to prepare all figures in this work.\n\nPublished - INTEGRAL_2012_050.pdf
", "abstract": "The knowledge of the spectral state of a black hole is essential for the interpretation of data from black holes in terms of their emission models. Based on pointed observations of Cyg X-1 with the Rossi X-ray timing Explorer (RXTE) that are used to classify simultaneous RXTE-ASM observations, we develop a scheme based on RXTE-ASM colors and count rates that can be used to classify all observations of this canonical black hole that were performed between 1996 and 2011. We show that a simple count rate criterion, as used previously, leads to a significantly higher fraction of misclassified observations. This scheme enables us to classify single INTEGRAL-IBIS science windows and to obtain summed spectra for the soft, intermediate and hard state with low contamination by other states.", "date": "2012-10", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20180828-122925125", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180828-122925125", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Bundesministerium f\u00fcr Wirtschaft und Technologie (BMWi)" }, { "agency": "Deutsches Zentrum f\u00fcr Luft-und Raumfahrt (DLR)", "grant_number": "50 OR 1007" }, { "agency": "Deutsches Zentrum f\u00fcr Luft-und Raumfahrt (DLR)", "grant_number": "50 OR 1113" }, { "agency": "European Commission", "grant_number": "ITN 215212" }, { "agency": "Department of Energy (DOE)", "grant_number": "DE-AC52-07NA27344" }, { "agency": "NASA", "grant_number": "NNX09AT28G" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.22323/1.176.0050", "primary_object": { "basename": "INTEGRAL_2012_050.pdf", "url": "https://authors.library.caltech.edu/records/7g4e5-wys26/files/INTEGRAL_2012_050.pdf" }, "pub_year": "2012", "author_list": "Grinberg, V.; Hell, N.; et el." }, { "id": "https://authors.library.caltech.edu/records/s0m50-qe539", "eprint_id": 89138, "eprint_status": "archive", "datestamp": "2023-08-19 13:04:24", "lastmod": "2024-01-14 20:41:40", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "M\u00fcller-Sebastian", "name": { "family": "M\u00fcller", "given": "S." } }, { "id": "Ferrigno-Carlo", "name": { "family": "Ferrigno", "given": "C." } }, { "id": "K\u00fchnel-Matthias", "name": { "family": "K\u00fchnel", "given": "M." } }, { "id": "Sch\u00f6nherr-Gabriele", "name": { "family": "Sch\u00f6nherr", "given": "G." } }, { "id": "Becker-Peter-A", "name": { "family": "Becker", "given": "P. A." } }, { "id": "Wolff-Michael-T", "name": { "family": "Wolff", "given": "M. T." }, "orcid": "0000-0002-4013-5650" }, { "id": "Hertel-D", "name": { "family": "Hertel", "given": "D." } }, { "id": "Schwarm-Fritz-Walter", "name": { "family": "Schwarm", "given": "F. W." } }, { "id": "Grinberg-Victoria", "name": { "family": "Grinberg", "given": "V." }, "orcid": "0000-0003-2538-0188" }, { "id": "Obst-M", "name": { "family": "Obst", "given": "M." } }, { "id": "Caballero-Isabel", "name": { "family": "Caballero", "given": "I." } }, { "id": "Pottschmidt-Katja", "name": { "family": "Pottschmidt", "given": "K." }, "orcid": "0000-0002-4656-6881" }, { "id": "F\u00fcrst-Felix", "name": { "family": "F\u00fcrst", "given": "F." }, "orcid": "0000-0003-0388-0560" }, { "id": "Kreykenbohm-Ingo", "name": { "family": "Kreykenbohm", "given": "I." }, "orcid": "0000-0001-7335-1803" }, { "id": "Rothschild-Richard-E", "name": { "family": "Rothschild", "given": "R. E." } }, { "id": "Hemphill-Paul-B", "name": { "family": "Hemphill", "given": "P." }, "orcid": "0000-0002-1676-6954" }, { "id": "Mart\u00ednez-N\u00fa\u00f1ez-Silvia", "name": { "family": "Mart\u00ednez-N\u00fa\u00f1ez", "given": "S." } }, { "id": "Torrej\u00f3n-Jos\u00e9-Miguel", "name": { "family": "Torrej\u00f3n", "given": "J. M." } }, { "id": "Klochkov-Dmitry", "name": { "family": "Klochkov", "given": "D." } }, { "id": "Staubert-R\u00fcediger", "name": { "family": "Staubert", "given": "R." } }, { "id": "Wilms-J\u00f6rn", "name": { "family": "Wilms", "given": "J." }, "orcid": "0000-0003-2065-5410" } ] }, "title": "A constant Cyclotron Line Energy in 4U 0115+634", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-ShareAlike. \n\nThis research has been funded by the Bundesministerium f\u00fcr Wirtschaft und Technologie under Deutsches Zentrum f\u00fcr Luft- und Raumfahrt grants 50OR0808, 50OR0905, 50OR1113, and 50OR1007, and by the Deutscher Akademischer Austauschdienst. MTW is supported by the US Office of Naval Research. IC acknowledges financial support from the French Space Agency CNES through CNRS. SMN and JMT acknowledge support from the Spanish Ministerio de Ciencia, Tecnolog\u00eda e Innovaci\u00f3n (MCINN) through grant AYA2010-15431 and the use of the computer facilities made available through the grant AIB2010DE-00057.\n\nPublished - INTEGRAL_2012_020.pdf
", "abstract": "We present a study of RXTE and INTEGRAL spectra of the transient 3.6 s X-ray pulsar 4U 0115+634 taken during a giant outburst in 2008 March/April. The spectra can be almost equally well modeled by two different semi-empirical continuum models, modified by an Fe K\u03b1 fluorescence line, interstellar absorption, and cyclotron resonance scattering features (CRSFs) located at \u223c10.7, 21.8, 35.5, 46.7, and 59.7 keV. One of these two models, the so called NPEX\nmodel, leads to an anticorrelation between the centroid energy of the fundamental CRSF E_0 and the X-ray flux F_X, in agreement with previous works. The other model, consisting of a simple exponentially cutoff power law modified by a Gaussian emission feature around 10 keV, however, leads to a constant value for E_0 for the observed fluxes and a comparatively narrow line shape. We show that the cyclotron line model component resulting from the NPEX fits rather contribute to the broadband continuum model. We conclude that the previously reported anticorrelation is probably due to an artifact of the particular modeling of the continuum.", "date": "2012-10", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20180824-100033544", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180824-100033544", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Bundesministerium f\u00fcr Wirtschaft und Technologie (BMWi)" }, { "agency": "Deutsches Zentrum f\u00fcr Luft- und Raumfahrt (DLR)", "grant_number": "50OR0808" }, { "agency": "Deutsches Zentrum f\u00fcr Luft- und Raumfahrt (DLR)", "grant_number": "50OR0905" }, { "agency": "Deutsches Zentrum f\u00fcr Luft- und Raumfahrt (DLR)", "grant_number": "50OR1007" }, { "agency": "Deutscher Akademischer Austauschdienst (DAAD)" }, { "agency": "Office of Naval Research (ONR)" }, { "agency": "Centre National d'\u00c9tudes Spatiales (CNES)" }, { "agency": "Centre National de la Recherche Scientifique (CNRS)" }, { "agency": "Ministerio de Ciencia, Tecnolog\u00eda e Innovaci\u00f3n (MCINN)", "grant_number": "AYA2010-15431" }, { "agency": "Ministerio de Ciencia, Tecnolog\u00eda e Innovaci\u00f3n (MCINN)", "grant_number": "AIB2010DE-00057" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.22323/1.176.0020", "primary_object": { "basename": "INTEGRAL_2012_020.pdf", "url": "https://authors.library.caltech.edu/records/s0m50-qe539/files/INTEGRAL_2012_020.pdf" }, "pub_year": "2012", "author_list": "M\u00fcller, S.; Ferrigno, C.; et el." }, { "id": "https://authors.library.caltech.edu/records/w08bz-82185", "eprint_id": 89141, "eprint_status": "archive", "datestamp": "2023-08-19 13:04:28", "lastmod": "2024-01-14 20:41:47", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "K\u00fchnel-Matthias", "name": { "family": "K\u00fchnel", "given": "Matthias" } }, { "id": "M\u00fcller-Sebastian", "name": { "family": "M\u00fcller", "given": "Sebastian" } }, { "id": "F\u00fcrst-Felix", "name": { "family": "F\u00fcrst", "given": "Felix" }, "orcid": "0000-0003-0388-0560" }, { "id": "Schwarm-Fritz-Walter", "name": { "family": "Schwarm", "given": "Fritz-Walter" } }, { "id": "Kreykenbohm-Ingo", "name": { "family": "Kreykenbohm", "given": "Ingo" }, "orcid": "0000-0001-7335-1803" }, { "id": "Wilms-J\u00f6rn", "name": { "family": "Wilms", "given": "J\u00f6rn" }, "orcid": "0000-0003-2065-5410" }, { "id": "Pottschmidt-Katja", "name": { "family": "Pottschmidt", "given": "Katja" }, "orcid": "0000-0002-4656-6881" }, { "id": "Suchy-Slawomir", "name": { "family": "Suchy", "given": "Slawomir" } }, { "id": "Rothschild-Richard-E", "name": { "family": "Rothschild", "given": "Richard E." } }, { "id": "Caballero-Isabel", "name": { "family": "Caballero", "given": "Isabel" } }, { "id": "Kretschmar-Peter", "name": { "family": "Kretschmar", "given": "Peter" }, "orcid": "0000-0001-9840-2048" }, { "id": "Sch\u00f6nherr-Gabriele", "name": { "family": "Sch\u00f6herr", "given": "Gabriele" } }, { "id": "Klochkov-Dmitry", "name": { "family": "Klochkov", "given": "Dmitry" } }, { "id": "Staubert-R\u00fcediger", "name": { "family": "Staubert", "given": "R\u00fcediger" } } ] }, "title": "GRO J1008 57: a laboratory for accretion physics", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-ShareAlike. \n\nWe thank the RXTE-, Swift- and Suzaku-teams for scheduling all observations used within this work. We acknowledge funding by the Bundesministerium f\u00fcr Wirtschaft und Technologie under Deutsches Zentrum f\u00fcr Luft- und Raumfahrt grants 50OR0808, 50OR0905, 50OR1113, and the Deutscher Akademischer Austauschdienst. All figures were produced using the SLXfig module, developed by John E. Davis.\n\nPublished - INTEGRAL_2012_017.pdf
", "abstract": "We present timing and spectroscopic results of three outbursts of the transient high mass X-ray binary GRO J1008\u221257 in 2005, 2007, and 2011. The orbital parameters from the literature are not in agreement with the measured pulse arrival times. We therefore updated the orbital solution, specifically the orbital period and the time of periastron passage, using pointed observations with RXTE, Swift, and Suzaku. We confirmed our results with an analysis of RXTE-ASM lightcurves. We show that GRO J1008\u221257's outbursts occur mostly at the same orbital phase and therefore make predictions of outbursts and, thus, scheduled observations possible. \n\nThe X-ray spectrum of GRO J1008\u221257 during an outburst can be well described by a cutoff power law with an additional black body at energies below 10 keV. We found that the same spectral model describes GRO J1008\u221257 during the rise and the decline of the outburst at fluxes changing by two orders of magnitude. In particular, the photon index of the power law and the black body flux show a correlation with the total X-ray flux. Other parameters such as the black body temperature and the folding energy are independent of flux and remain the same over all analyzed outbursts.", "date": "2012-10", "date_type": "published", "publisher": "SISSA", "id_number": "CaltechAUTHORS:20180824-100034014", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180824-100034014", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Bundesministerium f\u00fcr Wirtschaft und Technologie (BMWi)" }, { "agency": "Deutsches Zentrum f\u00fcr Luft- und Raumfahrt (DLR)", "grant_number": "50OR0808" }, { "agency": "Deutsches Zentrum f\u00fcr Luft- und Raumfahrt (DLR)", "grant_number": "50OR0905" }, { "agency": "Deutsches Zentrum f\u00fcr Luft- und Raumfahrt (DLR)", "grant_number": "50OR1113" }, { "agency": "Deutscher Akademischer Austauschdienst (DAAD)" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.22323/1.176.0017", "primary_object": { "basename": "INTEGRAL_2012_017.pdf", "url": "https://authors.library.caltech.edu/records/w08bz-82185/files/INTEGRAL_2012_017.pdf" }, "pub_year": "2012", "author_list": "K\u00fchnel, Matthias; M\u00fcller, Sebastian; et el." }, { "id": "https://authors.library.caltech.edu/records/qsbfc-5hq98", "eprint_id": 36801, "eprint_status": "archive", "datestamp": "2023-08-19 12:51:26", "lastmod": "2024-01-13 05:59:07", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Shupe-David-L", "name": { "family": "Shupe", "given": "David L." }, "orcid": "0000-0003-4401-0430" }, { "id": "Laher-R-R", "name": { "family": "Laher", "given": "Russ R." }, "orcid": "0000-0003-2451-5482" }, { "id": "Storrie-Lombardi-L-J", "name": { "family": "Storrie-Lombardi", "given": "Lisa" }, "orcid": "0000-0002-5987-5210" }, { "id": "Surace-J-A", "name": { "family": "Surace", "given": "Jason" }, "orcid": "0000-0001-7291-0087" }, { "id": "Grillmair-C-J", "name": { "family": "Grillmair", "given": "Carl J." }, "orcid": "0000-0003-4072-169X" }, { "id": "Levitan-D-B", "name": { "family": "Levitan", "given": "David" } }, { "id": "Sesar-B", "name": { "family": "Sesar", "given": "Branimir" }, "orcid": "0000-0002-0834-3978" } ] }, "title": "More Flexibility in Representing Geometric Distortion in Astronomical Images", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). September 24, 2012. PTF is a scientific collaboration between the California Institute of Technology, Columbia University, Las Cumbres Observatory, the Lawrence Berkeley National Laboratory, the National Energy Research Scientific Computing Center, the University of Oxford, and the Weizmann Institute of Science. This interproject work was performed at the Spitzer Science Center and the NASA Herschel Science Center as part of missions/projects managed by Jet Propulsion Laboratory, California Institute of Technology, under contracts with the National Aeronautics and Space Administration.\n\nPublished - 84511M.pdf
", "abstract": "A number of popular software tools in the public domain are used by astronomers, professional and amateur alike, but some of the tools that have similar purposes cannot be easily interchanged, owing to the lack of a common standard. For the case of image distortion, SCAMP and SExtractor, available from Astromatic.net, perform astrometric calibration and source-object extraction on image data, and image-data geometric distortion is computed in celestial coordinates with polynomial coefficients stored in the FITS header with the PV i_j keywords. Another widely-used astrometric-calibration service, Astrometry.net, solves for distortion in pixel coordinates using the SIP convention that was introduced by the Spitzer Science Center. Up until now, due to the complexity of these distortion representations, it was very difficult to use the output of one of these packages as input to the other. New Python software, along with faster-computing C-language translations, have been developed at the Infrared Processing and Analysis Center (IPAC) to convert FITS-image headers from PV to SIP and vice versa. It is now possible to straightforwardly use Astrometry.net for astrometric calibration and then SExtractor for source-object extraction. The new software also enables astrometric calibration by SCAMP followed by image visualization with tools that support SIP distortion, but not PV . The software has been incorporated into the image-processing pipelines of the Palomar Transient Factory (PTF), which generate FITS images with headers containing both distortion representations. The software permits the conversion of archived images, such as from the Spitzer Heritage Archive and NASA/IPAC Infrared Science Archive, from SIP to PV or vice versa. This new capability renders unnecessary any new representation, such as the proposed TPV distortion convention.", "date": "2012-09-24", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 84511M", "id_number": "CaltechAUTHORS:20130206-153455094", "isbn": "978-0-8194-9152-7", "book_title": "Software and Cyberinfrastructure for Astronomy II", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130206-153455094", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA/JPL/Caltech" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" }, { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" } ] }, "contributors": { "items": [ { "id": "Radziwill-N-M", "name": { "family": "Radziwill", "given": "Nicole M." } }, { "id": "Chiozzi-G", "name": { "family": "Chiozzi", "given": "Gianluca" } } ] }, "doi": "10.1117/12.925460", "primary_object": { "basename": "84511M.pdf", "url": "https://authors.library.caltech.edu/records/qsbfc-5hq98/files/84511M.pdf" }, "pub_year": "2012", "author_list": "Shupe, David L.; Laher, Russ R.; et el." }, { "id": "https://authors.library.caltech.edu/records/d5ms6-f9z34", "eprint_id": 84187, "eprint_status": "archive", "datestamp": "2023-08-19 12:47:52", "lastmod": "2024-01-14 19:15:59", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Vogel-J-K", "name": { "family": "Vogel", "given": "Julia K." } }, { "id": "Pivovaroff-M-J", "name": { "family": "Pivovaroff", "given": "Michael J." } }, { "id": "Nagarkar-V-V", "name": { "family": "Nagarkar", "given": "Vivek V." } }, { "id": "Kudrolli-H", "name": { "family": "Kudrolli", "given": "Haris" } }, { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "Kristin Kruse" }, "orcid": "0000-0003-1252-4891" }, { "id": "Koglin-J-E", "name": { "family": "Koglin", "given": "Jason E." } }, { "id": "Hailey-C-J", "name": { "family": "Hailey", "given": "Charles J." } }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "William W." } }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "Finn E." }, "orcid": "0000-0001-5679-1946" }, { "id": "Brejnholt-N-F", "name": { "family": "Brejnholt", "given": "Nicolai F." } } ] }, "title": "Application of an EMCCD camera for calibration of hard X-ray telescopes", "ispublished": "unpub", "full_text_status": "public", "keywords": "EMCCD, NuSTAR, hard x-ray mission, x-ray detectors, calibration, scintillator", "note": "\u00a9 2012 SPIE. \n\nThis work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. The support of the Laboratory Directed Research and Development Program is gratefully acknowledged. We thank our colleagues at NuSTAR for their support and cooperation and Columbia University for hospitality. We also thank NASA for funding this research under grant number.\n\nPublished - 84432L.pdf
", "abstract": "Recent technological innovations make it feasible to construct efficient hard x-ray telescopes for space-based astronomical missions. Focusing optics are capable of improving the sensitivity in the energy range above 10 keV by orders of magnitude compared to previously used instruments. The last decade has seen focusing optics developed for balloon experiments and they are implemented in approved space missions such as the Nuclear Spectroscopic Telescope Array (NuSTAR). The full characterization of x-ray optics for astrophysical missions, including measurement of the point spread function (PSF) as well as scattering and reflectivity properties of substrate coatings, requires a large area detector with very high spatial resolution and sensitivity, photon counting and energy discriminating capability. Novel back-thinned Electron Multiplying Charge-Coupled Devices (EMCCDs) are suitable detectors for ground-based calibrations if combined with a scintillating material. This optical coupling of the EMCCD chip to a microcolumnar CsI(Tl) scintillator can be achieved via a fiberoptic taper. Not only does this detector system exhibit low noise and high spatial resolution inherent to CCDs, but the EMCCD is also able to handle high frame rates. Additionally, thick CsI(Tl) yields high detection efficiency for x-rays. In this paper, we discuss the advantages of using an EMCCD to calibrate hard x-ray optics. We will illustrate the promising features of this detector solution using examples of data obtained during the ground calibration of the NuSTAR telescopes performed at Columbia University during 2010/2011. Finally, we give an outlook on latest development and optimizations.", "date": "2012-09-17", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "id_number": "CaltechAUTHORS:20180109-102252573", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180109-102252573", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Department of Energy (DOE)", "grant_number": "DE-AC52-07NA27344" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Takahashi-Tadayuki", "name": { "family": "Takahashi", "given": "Tadayuki" } }, { "id": "Murray-S-S", "name": { "family": "Murray", "given": "Stephen S." } }, { "id": "den-Herder-J-W-A", "name": { "family": "den Herder", "given": "Jan-Willem A." } } ] }, "doi": "10.1117/12.926386", "primary_object": { "basename": "84432L.pdf", "url": "https://authors.library.caltech.edu/records/d5ms6-f9z34/files/84432L.pdf" }, "pub_year": "2012", "author_list": "Vogel, Julia K.; Pivovaroff, Michael J.; et el." }, { "id": "https://authors.library.caltech.edu/records/ksr2x-tyj53", "eprint_id": 71273, "eprint_status": "archive", "datestamp": "2023-08-19 12:40:13", "lastmod": "2024-01-13 16:55:01", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Westergaard-N-J", "name": { "family": "Westergaard", "given": "Niels J." } }, { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "Kristin K." }, "orcid": "0000-0003-1252-4891" }, { "id": "Brejnholt-N-F", "name": { "family": "Brejnholt", "given": "Nicolai F." } }, { "id": "Koglin-J-E", "name": { "family": "Koglin", "given": "Jason E." } }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "Finn E." }, "orcid": "0000-0001-5679-1946" }, { "id": "Pivovaroff-M-J", "name": { "family": "Pivovaroff", "given": "Michael J." } }, { "id": "Vogel-J-K", "name": { "family": "Vogel", "given": "Julia K." } } ] }, "title": "NuSTAR on-ground calibration: I. Imaging quality", "ispublished": "unpub", "full_text_status": "public", "keywords": "The NuSTAR mission, calibration, raytracing, simulation", "note": "\u00a9 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nThe work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under contract DE-AC52-07NA27344. The support of the Laboratory Directed Research and Development Program is gratefully acknowledged.\n\nPublished - 84431X.pdf
", "abstract": "The Nuclear Spectroscopic Telescope Array (NuSTAR) launched in June 2012 carries the first focusing hard Xray (5 - 80 keV) telescope to orbit. The on-ground calibration was performed at the RaMCaF facility at Nevis, Columbia University. During the assembly of the telescopes, mechanical surface metrology provided surface maps of the reflecting surfaces. Several flight coated mirrors were brought to BNL for scattering measurements. The information from both sources is fed to a raytracing code that is tested against the on-ground calibration data. The code is subsequently used for predicting the imaging properties for X-ray sources at infinite distance.", "date": "2012-09-07", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 84431X", "id_number": "CaltechAUTHORS:20161019-113526612", "isbn": "9780819491442", "book_title": "Space Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20161019-113526612", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Department of Energy (DOE)", "grant_number": "DE-AC52-07NA27344" }, { "agency": "Lawrence Livermore National Laboratory Directed Research and Development (LDRD)" } ] }, "local_group": { "items": [ { "id": "NuSTAR" }, { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Takahashi-Tadayuki", "name": { "family": "Takahashi", "given": "Tadayuki" } }, { "id": "Murray-S-S", "name": { "family": "Murray", "given": "Stephen S." } }, { "id": "den-Herder-J-W-A", "name": { "family": "den Herder", "given": "Jan-Willem A." } } ] }, "doi": "10.1117/12.927076", "primary_object": { "basename": "84431X.pdf", "url": "https://authors.library.caltech.edu/records/ksr2x-tyj53/files/84431X.pdf" }, "pub_year": "2012", "author_list": "Westergaard, Niels J.; Madsen, Kristin K.; et el." }, { "id": "https://authors.library.caltech.edu/records/c9z46-yby49", "eprint_id": 71472, "eprint_status": "archive", "datestamp": "2023-08-19 12:40:19", "lastmod": "2024-01-13 16:56:19", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Lotti-S", "name": { "family": "Lotti", "given": "Simone" }, "orcid": "0000-0002-3088-1561" }, { "id": "Natalucci-L", "name": { "family": "Natalucci", "given": "Lorenzo" }, "orcid": "0000-0002-6601-9543" }, { "id": "Giommi-P", "name": { "family": "Giommi", "given": "Paolo" } }, { "id": "Grefenstette-B-W", "name": { "family": "Grefenstette", "given": "B." }, "orcid": "0000-0002-1984-2932" }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "Kristin K." }, "orcid": "0000-0003-1252-4891" }, { "id": "Perri-M", "name": { "family": "Perri", "given": "Matteo" } }, { "id": "Puccetti-S", "name": { "family": "Puccetti", "given": "Simonetta" }, "orcid": "0000-0002-2734-7835" }, { "id": "Zoglauer-A", "name": { "family": "Zoglauer", "given": "A." }, "orcid": "0000-0001-9067-3150" } ] }, "title": "Polarization studies with NuSTAR", "ispublished": "unpub", "full_text_status": "public", "keywords": "X-ray, polarization, NuSTAR, Compton Polarimetry, CdZnTe detectors, Geant4, Monte Carlo simulations", "note": "\u00a9 2012 Society of Photo-Optical Instrumentation Engineers (SPIE).\n\nPublished - 84434X.pdf
", "abstract": "The capability of NuSTAR to detect polarization in the Compton scattering regime (>50 keV) has been investigated. The NuSTAR mission, flown on June 2012 a Low Earth Orbit (LEO), provides a unique possibility to confirm the findings of INTEGRAL on the polarization of cosmic sources in the hard X-rays. Each of the two focal plane detectors are high resolution pixellated CZT arrays, sensitive in the energy range ~ 3 - 80 keV. These units have intrinsic polarization capabilities when the proper information on the double events is transmitted on ground. In this case it will be possible to detect polarization from bright sources on timescales of the order of 10^5 s.", "date": "2012-09-07", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 84434X", "id_number": "CaltechAUTHORS:20161025-153052262", "isbn": "9780819491442", "book_title": "Space Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20161025-153052262", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "NuSTAR" }, { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Takahashi-Tadayuki", "name": { "family": "Takahashi", "given": "Tadayuki" } }, { "id": "Murray-S-S", "name": { "family": "Murray", "given": "Stephen S." } }, { "id": "den-Herder-J-W", "name": { "family": "den Herder", "given": "Jan-Willem A." } } ] }, "doi": "10.1117/12.925989", "primary_object": { "basename": "84434X.pdf", "url": "https://authors.library.caltech.edu/records/c9z46-yby49/files/84434X.pdf" }, "pub_year": "2012", "author_list": "Lotti, Simone; Natalucci, Lorenzo; et el." }, { "id": "https://authors.library.caltech.edu/records/ewamq-y3857", "eprint_id": 66335, "eprint_status": "archive", "datestamp": "2023-08-19 11:00:45", "lastmod": "2024-01-13 16:48:33", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Liou-K-N", "name": { "family": "Liou", "given": "K." } }, { "id": "Wu-C-C", "name": { "family": "Wu", "given": "C.-C." } }, { "id": "Dryer-M", "name": { "family": "Dryer", "given": "M." } }, { "id": "Wu-S-T", "name": { "family": "Wu", "given": "S. T." } }, { "id": "Berdichevsky-D-B", "name": { "family": "Berdichevsky", "given": "D. B." } }, { "id": "Plunkett-S", "name": { "family": "Plunkett", "given": "S." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" } ] }, "title": "Relationship between solar energetic oxygen flux and MHD shock Mach number", "ispublished": "unpub", "full_text_status": "public", "keywords": "Solar energetic particles, CME-driven shock, MHD simulation, ACE", "note": "\u00a9 2012 American Institute of Physics. \n\nPublished online 21 May 2012. \n\nWe acknowledge the use of ACE/SIS data, E. Stone is the principal investigator of the instrument, and the flare data from the NOAA Space Weather Prediction Center. We acknowledge support from NASA under contact NNN06AA01C (Task NNN10AA08T). The work of C.-C. Wu and S. Plunkett was supported by NRL ISES program. The work of S.-T Wu was supported by AFOSR Grant FA9550-07-1-0468 and NSF Grant ATM0754278 to UAH. The work of R. Mewaldt was supported by NASA Grant NNX08AI11G. The work of G. M. Mason was supported by NASA grants NNX10AT75G and NNX07AP69G.\n\nPublished - 1.4723616.pdf
", "abstract": "This study correlates the time-intensity profile of a magnetohydrodynamic (MHD) shock with the corresponding solar energetic oxygen for a coronal mass ejection (CME) event that occurred on October 28, 2003. The intensity of MHD shock, in terms of Mach number, is simulated using a 1.5D MHD code, whereas the solar energetic oxygen flux is observed by the Solar Isotope Spectrometer (SIS) on board the Advanced Composition Explorer (ACE) spacecraft. A good correlation (Pearson correlation coefficient: r = 0.70 \u2013 0.84) is found between the forward fast-mode shock Mach number and the hourly-averaged, logarithmic oxygen differential energy flux for 7 energy channels (7.3 \u2013 63.8 MeV). We suspect that the intensity-time profile of high energy SEP events is manifested by the strength (Mach number) of CME-driven propagation shocks. While further studies with more events are required to be more conclusive, this study result provides a direction for future studies or predictions of SEP fluxes.", "date": "2012-05-21", "date_type": "published", "publisher": "American Institute of Physics", "id_number": "CaltechAUTHORS:20160420-150455239", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20160420-150455239", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNN06AA01C" }, { "agency": "NASA", "grant_number": "NNN10AA08T" }, { "agency": "Naval Research Laboratory" }, { "agency": "Air Force Office of Scientific Research (AFOSR)", "grant_number": "FA9550-07-1-0468" }, { "agency": "NSF", "grant_number": "ATM0754278" }, { "agency": "NASA", "grant_number": "NNX08AI11G" }, { "agency": "NASA", "grant_number": "NNX10AT75G" }, { "agency": "NASA", "grant_number": "NNX07AP69G" } ] }, "other_numbering_system": { "items": [ { "id": "2012-18", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Heerikhuisen-J", "name": { "family": "Heerikhuisen", "given": "Jacob" } }, { "id": "Li-Gang", "name": { "family": "Li", "given": "Gang" } }, { "id": "Pogoretov-N", "name": { "family": "Pogoretov", "given": "Nikolai" } }, { "id": "Zank-G", "name": { "family": "Zank", "given": "Gary" } } ] }, "doi": "10.1063/1.4723616", "primary_object": { "basename": "1.4723616.pdf", "url": "https://authors.library.caltech.edu/records/ewamq-y3857/files/1.4723616.pdf" }, "pub_year": "2012", "author_list": "Liou, K.; Wu, C.-C.; et el." }, { "id": "https://authors.library.caltech.edu/records/qq8bn-rrf20", "eprint_id": 66315, "eprint_status": "archive", "datestamp": "2023-08-19 11:00:40", "lastmod": "2024-01-13 16:48:17", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Gloeckler-G", "name": { "family": "Gloeckler", "given": "G." } }, { "id": "Fisk-L-A", "name": { "family": "Fisk", "given": "L. A." } }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Roelof-E-C", "name": { "family": "Roelof", "given": "E. C." }, "orcid": "0000-0002-2270-0652" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Analysis of suprathermal tails using hourly-averaged proton velocity distributions at 1 AU", "ispublished": "unpub", "full_text_status": "public", "keywords": "Particle acceleration, suprathermal tails", "note": "\u00a9 2012 American Institute of Physics. \n\nPublished: 21 May 2012. \n\nThis work was supported in part by NASA Grant 44A-1085637 (ACE) and by NSF Grant AGS-1043012. We thank E. M\u00f6bius and especially P. Bochsler for discussions of analysis of low count data. This paper benefited substantially from discussions held at the meetings of the International Team on -5 Tails and ACRs of the International Space Science Institute in Bern, Switzerland.\n\nPublished - 1.4723601.pdf
", "abstract": "We obtain hourly values of tail densities and of power law indices, \u03b3, of suprathermal (speeds above 2.48 times the solar wind speed) protons from power law fits to hourly velocity distribution functions in the solar-wind-frame. ACE/SWICS and ULEIS data, which often include very low counting statistics, are used to derive hourly proton phase space densities. We find that during part of the recent deep solar minimum (first 82 days in 2009): (a) the spectrum averaged over the entire 82 day period reveals the bulk and the halo solar wind components, interstellar pickup protons (seldom seen at 1 AU), and the common Fisk and Gloeckler (F&G) suprathermal tail (v^(\u22125) in velocity v with an exponential rollover at some higher speed); (b) hourly values of the tail densities range from ~1\u202210^(\u22126) to ~3\u202210^(\u22123) cm^(\u22123) and vary by a factor of ~2-10 over periods of hours as well as in a quasi-periodic manner by factors of 20 to 50 over 4 to 10 days; (c) about 95% of the nearly 2000 hourly spectra have complex shapes and that are not power laws; (d) about half of the ~5% of the hourly spectra that are monotonically decreasing with increasing speed (e.g. exponentials or Max-wellians, or F&G) are observed at times of high tail densities (>\u22125\u202210^(\u22125) cm^(\u22123)) where the spectra have the common F&G shapes; (e) each of the six sharp (few day long), large (tail density > 5\u202210^(\u22124) cm^(\u22123)) increases observed during this time period is associated with solar wind compression regions; (f) the eight shocks recorded locally that were not contained in compression regions did not produce signif-icant increases in the tail densities. We conclude that during times of low solar activity the higher energy portions of locally accelerated suprathermal tail spectra are often obscured by significant contributions from remotely accelerated particles whose spectra below (1-3)\u202210^8 cm/s are modified (modulated) by propagation from this remote acceleration region. In those instances where strong acceleration occurs locally, the observed tail spectra have the common F&G spectral shapes.", "date": "2012-05-21", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "136-143", "id_number": "CaltechAUTHORS:20160420-112640844", "isbn": "978-0-7354-1026-8", "book_title": "Physics of the heliosphere: a 10 year retrospective", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20160420-112640844", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "44A-1085637" }, { "agency": "NSF", "grant_number": "AGS-1043012" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.1063/1.4723601", "primary_object": { "basename": "1.4723601.pdf", "url": "https://authors.library.caltech.edu/records/qq8bn-rrf20/files/1.4723601.pdf" }, "pub_year": "2012", "author_list": "Gloeckler, G.; Fisk, L. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/zhqxz-c2x57", "eprint_id": 36440, "eprint_status": "archive", "datestamp": "2023-08-19 09:12:51", "lastmod": "2024-01-13 05:58:26", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" } ] }, "title": "Investigating the longitude dependence of solar energetic particle spectra", "ispublished": "unpub", "full_text_status": "public", "keywords": "Solar energetic particles, SEP composition, SEP spectra. solar wind, space vehicles", "note": "\u00a9 2012 American Institute of Physics. This work was supported by NASA under grants NNX08AI11G and NNX10AQ68G at Caltech, NNX10AT75G at JHUAPL, subcontracts SA2715-26309 from UC Berkeley (NASA contract NAS5-03131) and by NSF grant AGS-1156004. We thank Nariaki Nitta for useful discussions regarding solar source identifications.\n\nPublished - Cohen_2012p74.pdf
", "abstract": "We examine the traits of six solar energetic particle events observed simultaneously by instruments on ACE and at least one of the twin STEREO spacecraft. We compare the time profiles and spectra of energetic oxygen as a function of the longitudinal separation of the observer from the solar source region. We find systematic trends in the rise and peak times with source longitude that are consistent with those determined from single spacecraft studies. However, we also find two events where the rise times were surprisingly rapid when the source region was over the western limb relative to the observer. This has potential consequences for space weather predictions of radiation hazards. No clear trend is apparent for hardness of the event-integrated spectra with source longitude contrary to trends seen in the single spacecraft studies.", "date": "2012", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, N.Y.", "pagerange": "74-79", "id_number": "CaltechAUTHORS:20130117-081242064", "isbn": "978-0-7354-1114-2", "book_title": "Space Weather: The Space Radiation Environment", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130117-081242064", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX08AI11G" }, { "agency": "NASA", "grant_number": "NNX10AQ68G" }, { "agency": "NASA", "grant_number": "NNX10AT75G" }, { "agency": "NASA", "grant_number": "SA2715-26309" }, { "agency": "NASA", "grant_number": "NAS5-03131" }, { "agency": "NSF", "grant_number": "AGS-1156004" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Hu-Q", "name": { "family": "Hu", "given": "Qiang" } } ] }, "doi": "10.1063/1.4768747", "primary_object": { "basename": "Cohen_2012p74.pdf", "url": "https://authors.library.caltech.edu/records/zhqxz-c2x57/files/Cohen_2012p74.pdf" }, "pub_year": "2012", "author_list": "Cohen, C. M. S.; Mason, G. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/dr0jt-vjs38", "eprint_id": 31667, "eprint_status": "archive", "datestamp": "2023-08-19 09:09:45", "lastmod": "2024-01-13 05:52:44", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "G\u00f3mez-Herrero-R", "name": { "family": "G\u00f3mez-Herrero", "given": "R." } }, { "id": "Haggerty-D-K", "name": { "family": "Haggerty", "given": "D. K." }, "orcid": "0000-0001-6395-8943" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Evolution of suprathermal seed particle and solar energetic particle abundances", "ispublished": "unpub", "full_text_status": "public", "keywords": "Solar energetic particles, solar wind, pickup ions, solar composition, solar flares", "note": "\u00a9 2012 American Institute of Physics. NASA funded this work under grant NNX10AT75G at JHU/APL, and at Caltech under grants NNX08AI11G, NNX10AE45G, and subcontract SA2715-26309 from UC Berkeley under NASA contract NAS5-03131. We thank Eberhard M\u00f6bius and Nathan Schwadron for helpful discussions.\n\nPublished - APC000206.pdf
", "abstract": "We report on a survey of the composition of solar-wind suprathermal tails and solar energetic particles (SEPs) including data from 1998 to 2010, with a focus on 2007 to 2010. The start of solar cycle 24 included several SEP events that were unusually He-poor. We conclude that these He-poor events are more likely related to Q/M-dependent spectral variations than to seed-particle composition changes. We also find that the quiet-time suprathermal Fe/O ratio during the 2008-2009 solar-minimum was dramatically lower (Fe/O \u2264 0.01) than earlier due in part to very low solar activity, but also suggesting contributions from an oxygen-rich source of suprathermal ions of unknown origin.", "date": "2012", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "206-211", "id_number": "CaltechAUTHORS:20120529-082347635", "isbn": "978-0-7354-1026-8", "book_title": "Physics of the heliosphere: a 10 year retrospective", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20120529-082347635", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX10AT75G" }, { "agency": "NASA", "grant_number": "NNX08AI11G" }, { "agency": "NASA", "grant_number": "NNX10AE45G" }, { "agency": "NASA", "grant_number": "SA2715-26309" }, { "agency": "NASA", "grant_number": "NAS5-03131" } ] }, "other_numbering_system": { "items": [ { "id": "2012-19", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Heerikhuisen-J", "name": { "family": "Heerikhuisen", "given": "Jacob" } } ] }, "doi": "10.1063/1.4723609", "primary_object": { "basename": "APC000206.pdf", "url": "https://authors.library.caltech.edu/records/dr0jt-vjs38/files/APC000206.pdf" }, "pub_year": "2012", "author_list": "Mewaldt, R. A.; Mason, G. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/qvpcm-1jj49", "eprint_id": 31666, "eprint_status": "archive", "datestamp": "2023-08-19 09:09:40", "lastmod": "2024-01-13 05:52:42", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Haggerty-D-K", "name": { "family": "Haggerty", "given": "D. K." }, "orcid": "0000-0001-6395-8943" }, { "id": "Gomez-Herrero-R", "name": { "family": "Gomez-Herrero", "given": "R." } }, { "id": "Bucik-R", "name": { "family": "Bucik", "given": "R." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Korth-A", "name": { "family": "Korth", "given": "A." } }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mall-U", "name": { "family": "Mall", "given": "U." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Observations of the longitudinal spread of solar energetic particle events in solar cycle 24", "ispublished": "unpub", "full_text_status": "public", "keywords": "element relative abundance, solar composition, solar coronal mass ejections, solar radiation, solar wind", "note": "\u00a9 2012 American Institute of Physics. This work was funded by NASA under grants NNX08AI11G and NNX10AQ68G\nat Caltech, NNX10AT75G at JHUAPL, and subcontracts SA2715-26309 from UC Berkeley (NASA contract NAS5-03131) and N00173-10-1-G010 from NRL. The\nSTEREO/SEPT project is supported under grant 50 OC 0902 by the German\nBundesministerium f\u00fcr Wirtschaft through the Deutsches Zentrum f\u00fcr Luft und\nRaumfahrt (DLR). We thank Nariaki Nitta for useful discussions regarding solar\nsource identifications. We used data from the CME catalog generated and maintained\nat the CDAW Data Center by NASA and The Catholic University of America in\ncooperation with NRL and from the CACTus CME catalog, generated and maintained\nby the SIDC at the Royal Observatory of Belgium.\n\nPublished - APC000103.pdf
", "abstract": "With the twin STEREO spacecraft, significantly separated from L1-based satellites such as ACE, simultaneous multi-point measurements of solar energetic particle (SEP) events can be made for H-Fe ions from a few hundred keV/nuc to over 100 MeV/nuc and for electrons from tens to hundreds of keV. These observations allow studies of the longitudinal characteristics of SEP events to advance beyond statistical analysis of single point measurements. Although there have been few large SEP events thus far in cycle 24, there have been a number of smaller events that have been detected by more than one spacecraft. The composition of these SEP events, as indicated by the H/He and Fe/O abundance ratios, shows a dependence on longitudinal distance from the solar source in some events, at times with ratios varying by an order of magnitude. However, these variations are not organized by either the speed or width of the associated coronal mass ejections.", "date": "2012", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "103-109", "id_number": "CaltechAUTHORS:20120529-081329347", "isbn": "978-0-7354-1026-8", "book_title": "Physics of the heliosphere: a 10 year retrospective", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20120529-081329347", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX08AI11G" }, { "agency": "NASA", "grant_number": "NNX10AQ68G" }, { "agency": "NASA", "grant_number": "NNX10AT75G" }, { "agency": "NASA", "grant_number": "SA2715-26309" }, { "agency": "NASA", "grant_number": "NAS5-03131" }, { "agency": "NASA", "grant_number": "N00173-10-1-G010" }, { "agency": "Deutsches Zentrum f\u00fcr Luft und Raumfahrt (DLR)", "grant_number": "50 OC 0902" } ] }, "other_numbering_system": { "items": [ { "id": "2012-20", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Heerikhuisen-J", "name": { "family": "Heerikhuisen", "given": "Jacob" } } ] }, "doi": "10.1063/1.4723596", "primary_object": { "basename": "APC000103.pdf", "url": "https://authors.library.caltech.edu/records/qvpcm-1jj49/files/APC000103.pdf" }, "pub_year": "2012", "author_list": "Cohen, C. M. S.; Mason, G. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/sx5q3-w0q15", "eprint_id": 36347, "eprint_status": "archive", "datestamp": "2023-08-22 04:30:16", "lastmod": "2024-01-13 05:58:15", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" } ] }, "title": "The dependence of solar energetic particle fluences on suprathermal seed-particle densities", "ispublished": "unpub", "full_text_status": "public", "keywords": "cosmic ray propagation; iron; solar wind", "note": "\u00a9 2012 American Institute of Physics.\n\nNASA funded this work under grants NNX08AI11G and NNX11A075G at Caltech, and NNX10AT75G at JHU/APL; and subcontracts SA2715-26309 and SA4889-26309 from UC Berkeley under NASA contract NAS5-03131. We are grateful for the availability of SWEPAM data from the ACE Science Center.\n\nPublished - Mewaldt_2012p128.pdf
", "abstract": "Measurements during solar cycle 23 showed that most solar energetic particles (SEPs) are accelerated from a seed-population of suprathermal ions (e.g., >10 keV/nuc) rather than from the bulk solar wind. In this case the SEP fluence should depend on the pre-existing density of suprathermal ions. Lacking near-Sun measurements of suprathermal ion densities we have used ACE/ULEIS daily-average densities of suprathermal Fe at 1 AU during 1998-2005 as a proxy. We find that the maximum Fe daily-average SEP fluences measured by ACE/SIS are apparently limited by the pre-existing suprathermal number density. Similarly, large fluences of Fe in solar energetic particle events only occurred when there was a pre-existing high density of suprathermal Fe. We conclude that in situ suprathermal ion data can play a key role in estimating the probability of large SEP events, or in forecasting all-clear periods.", "date": "2012", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "128-133", "id_number": "CaltechAUTHORS:20130114-101755528", "isbn": "978-0-7354-1114-2", "book_title": "Space weather : the space radiation environment", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130114-101755528", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX08AI11G" }, { "agency": "NASA", "grant_number": "NNX11A075G" }, { "agency": "NASA", "grant_number": "NNX10AT75G" }, { "agency": "NASA", "grant_number": "SA2715-26309" }, { "agency": "NASA", "grant_number": "SA4889-26309" }, { "agency": "NASA", "grant_number": "NAS5-03131" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Hu-Q", "name": { "family": "Hu", "given": "Qiang" } } ] }, "doi": "10.1063/1.4768755", "primary_object": { "basename": "Mewaldt_2012p128.pdf", "url": "https://authors.library.caltech.edu/records/sx5q3-w0q15/files/Mewaldt_2012p128.pdf" }, "pub_year": "2012", "author_list": "Mewaldt, R. A.; Mason, G. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/s0f82-5hz91", "eprint_id": 71583, "eprint_status": "archive", "datestamp": "2023-08-19 08:19:36", "lastmod": "2024-01-13 20:16:44", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Brejnholt-N-F", "name": { "family": "Brejnholt", "given": "Nicolai F." } }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "Finn E." }, "orcid": "0000-0001-5679-1946" }, { "id": "Jakobsen-A-C", "name": { "family": "Jakobsen", "given": "Anders C." } }, { "id": "Hailey-C-J", "name": { "family": "Hailey", "given": "Charles J." } }, { "id": "Koglin-J-E", "name": { "family": "Koglin", "given": "Jason E." } }, { "id": "Blaedel-K-L", "name": { "family": "Blaedel", "given": "Kenneth L." } }, { "id": "Stern-M", "name": { "family": "Stern", "given": "Marcela" } }, { "id": "Thornhill-D", "name": { "family": "Thornhill", "given": "Doug" } }, { "id": "Sleator-C-C", "name": { "family": "Sleator", "given": "Clio" } }, { "id": "Zhang-Shuo", "name": { "family": "Zhang", "given": "Shuo" }, "orcid": "0000-0002-2967-790X" }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "William W." } }, { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "Kristin K." }, "orcid": "0000-0003-1252-4891" }, { "id": "Decker-T", "name": { "family": "Decker", "given": "Todd" } }, { "id": "Pivovaroff-M-J", "name": { "family": "Pivovaroff", "given": "Michael J." } }, { "id": "Vogel-J-K", "name": { "family": "Vogel", "given": "Julia K." } } ] }, "title": "NuSTAR ground calibration: The Rainwater Memorial Calibration Facility (RaMCaF)", "ispublished": "unpub", "full_text_status": "public", "keywords": "X-ray optics calibration, NuSTAR, hard X-rays, multilayers", "note": "\u00a9 2011 SPIE. \n\nThe NuSTAR mission is funded by NASA through contract number NNG08FD60C. Part of this work was funded by the Technical University of Denmark (DTU Space). Surface metrology (AFM and optical surface profiling) was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory (LLNL) under Contract DE-AC52-07NA27344. LLNL contributions also included support from LDRD project 10-SI-007. The prototype SDD was provided by Didier Barret of the Institut de Recherche en Astrophysique et Plan\u00e9tologie (IRAP). The prototype SDD development is funded by IRAP, the French National Center for\nScientific Research (CNRS) and the Centre National d'Etudes Spatiales (CNES). The use of the EMCCD X-ray detector for optics calibration was made possible thanks to NASA SBIR Grant NNX11CH32P.\n\nPublished - 81470I_1.pdf
", "abstract": "The Nuclear Spectroscopic Telescope Array (NuSTAR) is a NASA Small Explorer mission that will carry the first focusing hard X-ray (5-80 keV ) telescope to orbit. The ground calibration of the three flight optics was carried out at the Rainwater Memorial Calibration Facility (RaMCaF) built for this purpose. In this article we present the facility and its use for the ground calibration of the three optics.", "date": "2011-10-06", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 81470I", "id_number": "CaltechAUTHORS:20161028-134258339", "isbn": "978-0-8194-8757-5", "book_title": "Optics for EUV, X-Ray, and Gamma-Ray Astronomy V", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20161028-134258339", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG08FD60C" }, { "agency": "Technical University of Denmark" }, { "agency": "Department of Energy (DOE)", "grant_number": "DE-AC52-07NA27344" }, { "agency": "Lawrence Livermore National Laboratory", "grant_number": "10-SI-007" }, { "agency": "Centre National de la Recherche Scientifique (CNRS)" }, { "agency": "Centre National d'Etudes Spatiales (CNES)" }, { "agency": "NASA", "grant_number": "NNX11CH32P" } ] }, "local_group": { "items": [ { "id": "NuSTAR" }, { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "O'Dell-S-L", "name": { "family": "O'Dell", "given": "Stephen L." } }, { "id": "Pareschi-G", "name": { "family": "Pareschi", "given": "Giovanni" } } ] }, "doi": "10.1117/12.894659", "primary_object": { "basename": "81470I_1.pdf", "url": "https://authors.library.caltech.edu/records/s0f82-5hz91/files/81470I_1.pdf" }, "pub_year": "2011", "author_list": "Brejnholt, Nicolai F.; Christensen, Finn E.; et el." }, { "id": "https://authors.library.caltech.edu/records/82pvm-qhe49", "eprint_id": 71593, "eprint_status": "archive", "datestamp": "2023-08-19 08:19:40", "lastmod": "2024-01-13 20:17:04", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "Finn E." }, "orcid": "0000-0001-5679-1946" }, { "id": "Jakobsen-A-C", "name": { "family": "Jakobsen", "given": "Anders C." } }, { "id": "Brejnholt-N-F", "name": { "family": "Brejnholt", "given": "Nicolai F." } }, { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "Kristin K." }, "orcid": "0000-0003-1252-4891" }, { "id": "Hornstrup-A", "name": { "family": "Hornstrup", "given": "Allan" } }, { "id": "Westergaard-N-J", "name": { "family": "Westergaard", "given": "Niels J." } }, { "id": "Momberg-J", "name": { "family": "Momberg", "given": "Joan" } }, { "id": "Koglin-J-E", "name": { "family": "Koglin", "given": "Jason" } }, { "id": "Fabricant-A-M", "name": { "family": "Fabricant", "given": "Anne M." } }, { "id": "Stern-M", "name": { "family": "Stern", "given": "Marcela" } }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "William W." } }, { "id": "Pivovaroff-M-J", "name": { "family": "Pivovaroff", "given": "Michael J." } }, { "id": "Windt-D-L", "name": { "family": "Windt", "given": "David" } } ] }, "title": "Coatings for the NuSTAR mission", "ispublished": "unpub", "full_text_status": "public", "keywords": "Multilayer coatings, Slumped glass, Hard X-ray optics, Calibration, NuSTAR", "note": "\u00a9 2011 SPIE. \n\nWe gratefully acknowledge the help of Monica Fernandez-Perea, Sherry Baker and Regina Soufli for acquiring and analyzing the AFM data referred to in table 3. Likewise we gratefully acknowledge the help of Suzanne Romaine and Rick Bruni during the scatter measurement campaign at the Brookhaven synchrotron. We also want to thank Doug Thornhill, Clio Sleator and Shuo Zhang for help in taking the data on the hundreds of Si-witness samples at the RaMCaF facility. Finally we thank Simone J. Jakobsen, Mettte Friis, Nis B. Andreasen and Joachim Mortensen for assistance in the day to day maintenance and operation of the coating facility.\n\nPublished - 81470U_1.pdf
", "abstract": "The NuSTAR mission will be the first mission to carry a hard X-ray(5-80 keV) focusing telescope to orbit. The optics are based on the use of multilayer coated thin slumped glass. Two different material combinations were used for the flight optics, namely W/Si and Pt/C. In this paper we describe the entire coating effort including the final coating design that was used for the two flight optics. We also present data on the performance verification of the coatings both on Si witness samples as well as on individual flight mirrors.", "date": "2011-10-06", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 81470U", "id_number": "CaltechAUTHORS:20161028-151338934", "isbn": "978-0-8194-8757-5", "book_title": "Optics for EUV, X-Ray, and Gamma-Ray Astronomy V", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20161028-151338934", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "NuSTAR" }, { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "O'Dell-S-L", "name": { "family": "O'Dell", "given": "Stephen L." } }, { "id": "Pareschi-G", "name": { "family": "Pareschi", "given": "Giovanni" } } ] }, "doi": "10.1117/12.894615", "primary_object": { "basename": "81470U_1.pdf", "url": "https://authors.library.caltech.edu/records/82pvm-qhe49/files/81470U_1.pdf" }, "pub_year": "2011", "author_list": "Christensen, Finn E.; Jakobsen, Anders C.; et el." }, { "id": "https://authors.library.caltech.edu/records/pcwz9-aak05", "eprint_id": 71580, "eprint_status": "archive", "datestamp": "2023-08-19 08:19:30", "lastmod": "2024-01-13 20:16:38", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Koglin-J-E", "name": { "family": "Koglin", "given": "Jason E." } }, { "id": "An-Hongjun", "name": { "family": "An", "given": "HongJun" } }, { "id": "Barri\u00e8re-N-M", "name": { "family": "Barri\u00e8re", "given": "Nicolas" }, "orcid": "0000-0001-9407-9490" }, { "id": "Brejnholt-N-F", "name": { "family": "Brejnholt", "given": "Nicolai F." } }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "Finn E." }, "orcid": "0000-0001-5679-1946" }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "William W." } }, { "id": "Hailey-C-J", "name": { "family": "Hailey", "given": "Charles J." } }, { "id": "Jakobsen-A-C", "name": { "family": "Jakobsen", "given": "Anders Clemen" } }, { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "Kristin K." }, "orcid": "0000-0003-1252-4891" }, { "id": "Mori-Kaya", "name": { "family": "Mori", "given": "Kaya" }, "orcid": "0000-0002-9709-5389" }, { "id": "Nynka-M", "name": { "family": "Nynka", "given": "Melania" }, "orcid": "0000-0002-3310-1946" }, { "id": "Fernandez-Perea-M", "name": { "family": "Fernandez-Perea", "given": "Monica" } }, { "id": "Pivovaroff-M-J", "name": { "family": "Pivovaroff", "given": "Michael J." } }, { "id": "Ptak-A", "name": { "family": "Ptak", "given": "Andrew" }, "orcid": "0000-0001-5655-1440" }, { "id": "Sleator-C-C", "name": { "family": "Sleator", "given": "Clio" } }, { "id": "Thornhill-D", "name": { "family": "Thornhill", "given": "Doug" } }, { "id": "Vogel-J-K", "name": { "family": "Vogel", "given": "Julia K." } }, { "id": "Wik-D-R", "name": { "family": "Wik", "given": "Daniel R." }, "orcid": "0000-0001-8952-676X" }, { "id": "Zhang-W-W", "name": { "family": "Zhang", "given": "William W." }, "orcid": "0000-0002-1426-9698" } ] }, "title": "First results from the ground calibration of the NuSTAR flight optics", "ispublished": "unpub", "full_text_status": "public", "keywords": "Hard X-ray telescope, X-ray optics, segmented glass, NuSTAR", "note": "\u00a9 2011 SPIE. \n\nWe gratefully acknowledge the technical support Zeshan Haier provided in setting up and maintaining the RaMCaF calibration facility for the FM1 and FM2 measurements. This work is supported by a NASA contract to Columbia University, NNG08FD60C, \"The Nuclear Spectroscopy Telescope Array (NuSTAR): Bringing the High Energy Universe into Focus.\" Part of this work was funded by the Technical University of Denmark (DTU Space). Part of this work was also performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. LLNL contributions included support from LDRD project 10-SI-007. The use of the RMD X-ray detector for optics calibration was made possible thanks to NASA SBIR Grant NNX11CH32P. The prototype SDD development is funded by IRAP, the French National Center for Scientific Research (CNRS) and the Centre National d'Etudes Spatiales (CNES).\n\nPublished - 81470J_1.pdf
", "abstract": "NuSTAR is a hard X-ray satellite experiment to be launched in 2012. Two optics with 10.15 m focal length focus Xrays with energies between 5 and 80 keV onto CdZnTe detectors located at the end of a deployable mast. The FM1 and FM2 flight optics were built at the same time based on the same design and with very similar components, and thus the performance of both is expected to be very similar. We provide an overview of calibration data that is being used to build an optics response model for each optic and describe initial results for energies above 10 keV from the ground calibration of the flight optics. From a preliminary analysis of the data, our current best determination of the overall HPD of both the FM1 and FM2 flight optics is 52\", and nearly independent of energy. The statistical error is negligible, and a preliminary estimate of the systematic error is of order 4\". The as-measured effective area and HPD meet the toplevel NuSTAR mission sensitivity requirements.", "date": "2011-10-06", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 81470J", "id_number": "CaltechAUTHORS:20161028-131306899", "isbn": "978-0-8194-8757-5", "book_title": "Optics for EUV, X-Ray, and Gamma-Ray Astronomy V", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20161028-131306899", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG08FD60C" }, { "agency": "Technical University of Denmark" }, { "agency": "Department of Energy (DOE)", "grant_number": "DE-AC52-07NA27344" }, { "agency": "Lawrence Livermore National Laboratory", "grant_number": "10-SI-007" }, { "agency": "NASA", "grant_number": "NNX11CH32P" }, { "agency": "Centre National de la Recherche Scientifique (CNRS)" }, { "agency": "Centre National d'Etudes Spatiales (CNES)" } ] }, "local_group": { "items": [ { "id": "NuSTAR" }, { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "O'Dell-S-L", "name": { "family": "O'Dell", "given": "Stephen L." } }, { "id": "Pareschi-G", "name": { "family": "Pareschi", "given": "Giovanni" } } ] }, "doi": "10.1117/12.895279", "primary_object": { "basename": "81470J_1.pdf", "url": "https://authors.library.caltech.edu/records/pcwz9-aak05/files/81470J_1.pdf" }, "pub_year": "2011", "author_list": "Koglin, Jason E.; An, HongJun; et el." }, { "id": "https://authors.library.caltech.edu/records/8rmgp-haz49", "eprint_id": 71647, "eprint_status": "archive", "datestamp": "2023-08-19 08:02:50", "lastmod": "2024-01-13 20:17:49", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Kitaguchi-Takao", "name": { "family": "Kitaguchi", "given": "Takao" } }, { "id": "Grefenstette-B-W", "name": { "family": "Grefenstette", "given": "Brian W." }, "orcid": "0000-0002-1984-2932" }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Miyasaka-Hiromasa", "name": { "family": "Miyasaka", "given": "Hiromasa" }, "orcid": "0000-0002-8074-4186" }, { "id": "Bhalerao-V-B", "name": { "family": "Bhalerao", "given": "Varun B." }, "orcid": "0000-0002-6112-7609" }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "Walter R., III" } }, { "id": "Mao-Peter-H", "name": { "family": "Mao", "given": "Peter H." } }, { "id": "Rana-V-R", "name": { "family": "Rana", "given": "Vikram R." }, "orcid": "0000-0003-1703-8796" }, { "id": "Boggs-S-E", "name": { "family": "Boggs", "given": "Steven E." }, "orcid": "0000-0001-9567-4224" }, { "id": "Zoglauer-A-C", "name": { "family": "Zoglauer", "given": "Andreas C." } } ] }, "title": "Spectral calibration and modeling of the NuSTAR CdZnTe pixel detectors", "ispublished": "unpub", "full_text_status": "public", "keywords": "X-ray, \u03b3-ray, CdZnTe, pixel detector, Monte-Carlo simulation", "note": "\u00a9 2011 SPIE Society of Photo-Optical Instrumentation Engineers. \n\nThis work was supported under NASA Contract NNG08FD60C. T.K. is supported by JSPS postdoctoral fellowships for research abroad. We thank Csaba Szeles for useful discussions.\n\nPublished - 814507_1.pdf
Submitted - 1109.0378v2.pdf
", "abstract": "The Nuclear Spectroscopic Telescope Array (NuSTAR) will be the first space mission to focus in the hard X-ray (5-80 keV) band. The NuSTAR instrument carries two co-aligned grazing incidence hard X-ray telescopes. Each NuSTAR focal plane consists of four 2 mm CdZnTe hybrid pixel detectors, each with an active collecting area of 2 cm x 2 cm. Each hybrid consists of a 32x32 array of 605 \u03bcm pixels, read out with the Caltech custom low-noise NuCIT ASIC. In order to characterize the spectral response of each pixel to the degree required to meet the science calibration requirements, we have developed a model based on Geant4 together with the Shockley-Ramo theorem customized to the NuSTAR hybrid design. This model combines a Monte Carlo of the X-ray interactions with subsequent charge transport within the detector. The combination of this model and calibration data taken using radioactive sources of ^(57)Co, ^(155)Eu and ^(241)Am enables us to determine electron and hole mobility-lifetime products for each pixel, and to compare actual to ideal performance expected for defect-free material.", "date": "2011-09-13", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 814507", "id_number": "CaltechAUTHORS:20161101-075245752", "isbn": "978-0-8194-8755-1", "book_title": "UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XVII", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20161101-075245752", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG08FD60C" }, { "agency": "Japan Society for the Promotion of Science (JSPS)" } ] }, "local_group": { "items": [ { "id": "NuSTAR" }, { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Siegmund-O-H-W", "name": { "family": "Siegmund", "given": "Oswald H." } } ] }, "doi": "10.1117/12.896972", "primary_object": { "basename": "1109.0378v2.pdf", "url": "https://authors.library.caltech.edu/records/8rmgp-haz49/files/1109.0378v2.pdf" }, "related_objects": [ { "basename": "814507_1.pdf", "url": "https://authors.library.caltech.edu/records/8rmgp-haz49/files/814507_1.pdf" } ], "pub_year": "2011", "author_list": "Kitaguchi, Takao; Grefenstette, Brian W.; et el." }, { "id": "https://authors.library.caltech.edu/records/kwx2c-rbs25", "eprint_id": 71813, "eprint_status": "archive", "datestamp": "2023-08-19 03:27:02", "lastmod": "2024-01-13 20:18:55", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Harp-D-I", "name": { "family": "Harp", "given": "D. Isaiah" } }, { "id": "Liebe-C-C", "name": { "family": "Liebe", "given": "Carl Christian" } }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "William" } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona" }, "orcid": "0000-0003-2992-8024" }, { "id": "Kruse-Madsen-K", "name": { "family": "Kruse-Madsen", "given": "Kristin" } }, { "id": "Zoglauer-A", "name": { "family": "Zoglauer", "given": "Andreas" }, "orcid": "0000-0001-9067-3150" } ] }, "title": "NuSTAR: system engineering and modeling challenges in pointing reconstruction for a deployable x-ray telescope", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2010 SPIE. \n\nThe research described in this paper was carried out at the Jet Propulsion Laboratory, California Institute of Technology, Space Radiation Laboratory, California Institute of Technology and Space Sciences Laboratory, UC Berkeley and was sponsored by the National Aeronautics and Space Administration. References herein to any specific commercial product, process or service by trademark, manufacturer, or otherwise, does not constitute or imply its endorsement by the United States Government or the Jet Propulsion Laboratory, California Institute of Technology, the Space Radiation Laboratory, California Institute of Technology, or the Space Sciences Laboratory, UC Berkeley\n\nPublished - 77380Z_1.pdf
", "abstract": "The Nuclear Spectroscopic Telescope Array (NuSTAR) is a NASA Small Explorer mission that will make the first sensitive images of the sky in the high energy X-ray band (6 - 80 keV). The NuSTAR observatory consists of two co-aligned grazing incidence hard X-ray telescopes with a ~10 meter focal length, achieved by the on-orbit extension of a deployable mast. A principal science objective of the mission is to locate previously unknown high-energy X-ray sources to an accuracy of 10 arcseconds (3-sigma), sufficient to uniquely identify counterparts at other wavelengths. In order to achieve this, a star tracker and laser metrology system are an integral part of the instrument; in conjunction, they will determine the orientation of the optics bench in celestial coordinates and also measure the flexures in the deployable mast as it responds to the varying on-orbit thermal environment, as well as aerodynamic and control torques. The architecture of the NuSTAR system for solving the attitude and aspect problems differs from that of previous X-ray telescopes, which did not require ex post facto reconstruction of the instantaneous observatory alignment on-orbit. In this paper we describe the NuSTAR instrument metrology system architecture and implementation, focusing on the systems engineering challenges associated with validating the instantaneous transformations between focal plane and celestial coordinates to within the required accuracy. We present a mathematical solution to photon source reconstruction, along with a detailed error budget that relates component errors to science performance. We also describe the architecture of the instrument simulation software being used to validate the end-to-end performance model.", "date": "2010-08-03", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 77380Z", "id_number": "CaltechAUTHORS:20161108-133938358", "isbn": "978-0-81948-228-0", "book_title": "Modeling, Systems Engineering, and Project Management for Astronomy IV", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20161108-133938358", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA/JPL/Caltech" } ] }, "local_group": { "items": [ { "id": "NuSTAR" }, { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Angeli-G-Z", "name": { "family": "Angeli", "given": "George Z." } }, { "id": "Dierickx-P", "name": { "family": "Dierickx", "given": "Philippe" } } ] }, "doi": "10.1117/12.856626", "primary_object": { "basename": "77380Z_1.pdf", "url": "https://authors.library.caltech.edu/records/kwx2c-rbs25/files/77380Z_1.pdf" }, "pub_year": "2010", "author_list": "Harp, D. Isaiah; Liebe, Carl Christian; et el." }, { "id": "https://authors.library.caltech.edu/records/75tgf-nqr68", "eprint_id": 22866, "eprint_status": "archive", "datestamp": "2023-08-22 00:25:14", "lastmod": "2024-01-13 00:11:43", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Bhalereo-V", "name": { "family": "Bhalereo", "given": "Varun" } }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. Rick" } }, { "id": "Grefenstette-B-W", "name": { "family": "Grefenstette", "given": "Brian W." }, "orcid": "0000-0002-1984-2932" }, { "id": "Kitaguchi-Takeo", "name": { "family": "Kitaguchi", "given": "Takeo" } }, { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "Kristin Kruse" }, "orcid": "0000-0003-1252-4891" }, { "id": "Mao-Peter-H", "name": { "family": "Mao", "given": "Peter H." } }, { "id": "Miyasaka-Hiromasa", "name": { "family": "Miyasaka", "given": "Hiromasa" }, "orcid": "0000-0002-8074-4186" }, { "id": "Rana-V-R", "name": { "family": "Rana", "given": "Vikram" }, "orcid": "0000-0003-1703-8796" } ] }, "title": "The Nuclear Spectroscopic Telescope Array (NuSTAR)", "ispublished": "unpub", "full_text_status": "public", "keywords": "X-rays; gamma-rays; missions", "note": "\u00a9 2010 SPIE. \n\nThe NuSTAR mission is funded by NASA through contract number NNG08FD60C. Additional contributions are provided by the Danish Technical University for optics coating and calibration and the Agenzia Spaziale Italiana (ASI) for the Malindi ground station and ground data system development. Mission management is provided by the Jet Propulsion Laboratory, and program management provided by the Explorer Program Office at Goddard Space Flight Center.\n\nPublished - Harrison2010p12915Adaptive_Optics_Systems_Pts_1-3.pdf
", "abstract": "The Nuclear Spectroscopic Telescope Array (NuSTAR) is a NASA Small Explorer mission that will carry the rst\nfocusing hard X-ray (6 - 80 keV) telescope to orbit. NuSTAR will oer a factor 50 - 100 sensitivity improvement\ncompared to previous collimated or coded mask imagers that have operated in this energy band. In addition,\nNuSTAR provides sub-arcminute imaging with good spectral resolution over a 12-arcminute eld of view. After\nlaunch, NuSTAR will carry out a two-year primary science mission that focuses on four key programs: studying\nthe evolution of massive black holes through surveys carried out in elds with excellent multiwavelength coverage,\nunderstanding the population of compact objects and the nature of the massive black hole in the center of the\nMilky Way, constraining the explosion dynamics and nucleosynthesis in supernovae, and probing the nature\nof particle acceleration in relativistic jets in active galactic nuclei. A number of additional observations will be\nincluded in the primary mission, and a guest observer program will be proposed for an extended mission to expand\nthe range of scientic targets. The payload consists of two co-aligned depth-graded multilayer coated grazing\nincidence optics focused onto a solid state CdZnTe pixel detectors. To be launched in early 2012 on a Pegasus\nrocket into a low-inclination Earth orbit, NuSTAR largely avoids SAA passage, and will therefore have low and\nstable detector backgrounds. The telescope achieves a 10.14-meter focal length through on-orbit deployment of\nan extendable mast. An aspect and alignment metrology system enable reconstruction of the absolute aspect\nand variations in the telescope alignment resulting from mast \nexure during ground data processing. Data will\nbe publicly available at GSFC's High Energy Archive Research Center (HEASARC) following validation at the\nscience operations center located at Caltech.", "date": "2010-07-29", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 77320S", "id_number": "CaltechAUTHORS:20110314-141204066", "isbn": "978-0-8194-8222-8", "book_title": "Space telescopes and instrumentation 2010 : ultraviolet to gamma ray", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110314-141204066", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG08FD60C" }, { "agency": "Danish Technical University" }, { "agency": "Agenzia Spaziale Italiana (ASI)" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" }, { "id": "NuSTAR" } ] }, "contributors": { "items": [ { "id": "Arnaud-M", "name": { "family": "Arnaud", "given": "Monique" } }, { "id": "Murray-S-S", "name": { "family": "Murray", "given": "Stephen S." } }, { "id": "Takahashi-Tadayuki", "name": { "family": "Takahashi", "given": "T." } } ] }, "doi": "10.1117/12.858065", "primary_object": { "basename": "Harrison2010p12915Adaptive_Optics_Systems_Pts_1-3.pdf", "url": "https://authors.library.caltech.edu/records/75tgf-nqr68/files/Harrison2010p12915Adaptive_Optics_Systems_Pts_1-3.pdf" }, "pub_year": "2010", "author_list": "Harrison, Fiona A.; Bhalereo, Varun; et el." }, { "id": "https://authors.library.caltech.edu/records/x3gcd-z8n46", "eprint_id": 20057, "eprint_status": "archive", "datestamp": "2023-08-21 23:37:39", "lastmod": "2024-01-13 00:02:18", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Shih-A-Y", "name": { "family": "Shih", "given": "A. Y." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Barghouty-A-F", "name": { "family": "Barghouty", "given": "A. F." } }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Observations and Interpretations of Energetic Neutral Hydrogen Atoms from the December 5, 2006 Solar Event", "ispublished": "unpub", "full_text_status": "public", "keywords": "energetic neutral atoms; solar energetic particles; flares; coronal mass ejections", "note": "\u00a9 2010 American Institute of Physics.\nIssue Date: 25 March 2010.\n\nThis work was supported by NASA at Caltech and\nJPL under sub-contract SA2715-26309 from UC\nBerkeley under NASA contract NAS5-03131. The\nwork at MSFC was supported by the TEI Program of\nNASA's Office of Chief Engineer. We thank NOAA\nfor GOES X-ray data and appreciate discussions with\nHugh Hudson, Sam Krucker, Gang Li, Bob Lin, Ron\nMurphy and Gerry Share.\n\nPublished - Mewaldt2010p11406Aip_Conf_Proc.pdf
", "abstract": "We discuss recently reported observations of energetic neutral hydrogen atoms (ENAs) from an X9 solar flare/coronal mass ejection event on 5 December 2006, located at E79. The observations were made by the Low Energy Telescopes (LETs) on STEREO A and B. Prior to the arrival of the main solar energetic particle (SEP) event at Earth, both LETs observed a sudden burst of 1.6 to 15 MeV energetic neutral hydrogen atoms produced by either flare or shock-accelerated protons. RHESSI measurements of the 2.2-MeV \u03b3-ray line provide an estimate of the number of interacting flare-accelerated protons in this event, which leads to an improved estimate of ENA production by flare-accelerated protons. Taking into account ENA losses, we find that the observed ENAs must have been produced in the high corona at heliocentric distances \u2265 2 solar radii. Although there are no CME images from this event, it is shown that CME-shock-accelerated protons can, in principle, produce a time-history consistent with the observations.", "date": "2010-03-25", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "592-595", "id_number": "CaltechAUTHORS:20100921-085601924", "isbn": "978-0-7354-0759-6", "book_title": "Twelfth International Solar Wind Conference", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20100921-085601924", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "SA2715-26309" }, { "agency": "NASA", "grant_number": "NAS5-03131" }, { "agency": "NASA Office of Chief Engineer, TEI Program" } ] }, "other_numbering_system": { "items": [ { "id": "2010-08", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Maksimovic-M", "name": { "family": "Maksimovic", "given": "Milan" } } ] }, "doi": "10.1063/1.3395935", "primary_object": { "basename": "Mewaldt2010p11406Aip_Conf_Proc.pdf", "url": "https://authors.library.caltech.edu/records/x3gcd-z8n46/files/Mewaldt2010p11406Aip_Conf_Proc.pdf" }, "pub_year": "2010", "author_list": "Mewaldt, R. A.; Leske, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/p7dk5-8vx42", "eprint_id": 66291, "eprint_status": "archive", "datestamp": "2023-08-19 02:02:36", "lastmod": "2024-01-13 16:47:50", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "G\u00f3mez-Herrero-R", "name": { "family": "G\u00f3mez-Herrero", "given": "R." } }, { "id": "Haggerty-D", "name": { "family": "Haggerty", "given": "D." } }, { "id": "Nitta-N-V", "name": { "family": "Nitta", "given": "N. V." } }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Chollet-E-E", "name": { "family": "Chollet", "given": "E. E." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "M\u00fcller-Mellin-R", "name": { "family": "M\u00fcller-Mellin", "given": "R." } }, { "id": "Desai-M-I", "name": { "family": "Desai", "given": "M." }, "orcid": "0000-0002-7318-6008" }, { "id": "Mall-U", "name": { "family": "Mall", "given": "U." } } ] }, "title": "Observations of a ^3He-rich SEP Event over a Broad Range of Heliographic Longitudes: Results from STEREO and ACE", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar energetic particles, solar flares, 3He-rich SEP events, particle transport", "note": "\u00a9 2010 American Institute of Physics. \n\nPublished online 25 March 2010. \n\nThis work was supported by NASA at Caltech (under grant NNX08AI11G and through UC Berkeley under contract NAS5-03131), JPL, GSFC, and APL.\n\nPublished - 1.3395943.pdf
", "abstract": "Observations of energetic ions and electrons from STEREO and ACE have been used to investigate the longitudinal extent of particle emissions from 3He \u2010rich solar energetic particle (SEP) events. In the event of 3\u20134 Nov 2008, ions and electrons were detected 20\u00b0 ahead and behind the nominal connection from the source region to 1 AU, and electrons were also detected 60\u00b0 ahead. The results are consistent with those of earlier studies that correlated data from near\u2010Earth spacecraft with Helios data or with observations of source regions on the Sun.", "date": "2010-03-25", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "621-624", "id_number": "CaltechAUTHORS:20160420-081255610", "isbn": "978-0-7354-0759-6", "book_title": "12th International Solar Wind Conference", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20160420-081255610", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX08AI11G" }, { "agency": "NASA", "grant_number": "NAS5-03131" }, { "agency": "JPL" }, { "agency": "Goddard Space Flight Center" }, { "agency": "Johns Hopkins University Applied Physics Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Maksimovic-M", "name": { "family": "Maksimovic", "given": "M." } }, { "id": "Issautier-K", "name": { "family": "Issautier", "given": "K." } }, { "id": "Meyer-Vernet-N", "name": { "family": "Meyer-Vernet", "given": "N." } }, { "id": "Moncuquet-M", "name": { "family": "Moncuquet", "given": "M." } }, { "id": "Pantellini-F", "name": { "family": "Pantellini", "given": "F." } } ] }, "doi": "10.1063/1.3395943", "primary_object": { "basename": "1.3395943.pdf", "url": "https://authors.library.caltech.edu/records/p7dk5-8vx42/files/1.3395943.pdf" }, "pub_year": "2010", "author_list": "Wiedenbeck, M. E.; Mason, G. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/yafg6-vhh84", "eprint_id": 20056, "eprint_status": "archive", "datestamp": "2023-08-21 23:37:33", "lastmod": "2024-01-13 00:02:16", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "STEREO and ACE Observations of Energetic Particles from Corotating Interaction Regions", "ispublished": "unpub", "full_text_status": "public", "keywords": "Interplanetary physics; Corotating streams; Energetic particles; STEREO; ACE", "note": "\u00a9 2010 American Institute of Physics.\nIssue Date: 25 March 2010.\nThis work was supported by NASA at Caltech and JPL\nunder sub-contract SA2715-26309 from UC Berkeley under NASA contract NAS5-03131. We thank\nSTEREO/PLASTIC (NASA contract NAS5-00132),\nSTEREO/MAG, and ACE/SWEPAM investigators for\nmaking their data publicly available.\n\nPublished - Leske2010p11409Aip_Conf_Proc.pdf
", "abstract": "Since early 2007, significant particle enhancements due to corotating interaction regions (CIRs) have regularly appeared at 1 AU without any appreciable contamination from solar energetic particles (SEPs). In 2009 the prevalence of CIRs diminished as the maximum speed of the high speed solar wind streams in the ecliptic decreased along with the tilt of the heliospheric current sheet. Observations of CIR time profiles at different longitudes from STEREO show delays between the Behind and Ahead spacecraft that are often roughly as expected from the corotation time lag, although small differences in the spacecraft latitudes introduce significant scatter in the time delays. In some cases different features seen at Ahead and Behind suggest that transient disturbances in the solar wind may alter connection to or transport from the shock, or that temporal changes occur in the CIR shock itself. H and He data from STEREO/LET at 1.8\u20136 MeV/nucleon show that 1) the CIR spectral index at these energies is ~\u22124, independent of intensity but with considerable variability, 2) the He/H ratio is ~0.03 for larger CIRs but varies systematically with energy and event intensity, and 3) although the correlation between the CIR MeV particle increases and solar wind speed is generally good, many times a high-speed stream is not associated with MeV particles, while at other times a recurring series of CIR particle increases appears only at higher energies and may be associated with current sheet crossings and low speed solar wind.", "date": "2010-03-25", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "379-382", "id_number": "CaltechAUTHORS:20100921-082613682", "isbn": "978-0-7354-0759-6", "book_title": "Twelfth International Solar Wind Conference", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20100921-082613682", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "SA2715-26309" }, { "agency": "NASA", "grant_number": "NAS5-03131" } ] }, "other_numbering_system": { "items": [ { "id": "2010-09", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Maksimovic-M", "name": { "family": "Maksimovic", "given": "Milan" } } ] }, "doi": "10.1063/1.3395881", "primary_object": { "basename": "Leske2010p11409Aip_Conf_Proc.pdf", "url": "https://authors.library.caltech.edu/records/yafg6-vhh84/files/Leske2010p11409Aip_Conf_Proc.pdf" }, "pub_year": "2010", "author_list": "Leske, R. A.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/bw33q-xs818", "eprint_id": 74997, "eprint_status": "archive", "datestamp": "2023-08-19 01:52:01", "lastmod": "2023-10-25 14:38:51", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Liebe-C-C", "name": { "family": "Liebe", "given": "Carl Christian" } }, { "id": "Burnham-J-A", "name": { "family": "Burnham", "given": "Jill" } }, { "id": "Cook-R", "name": { "family": "Cook", "given": "Rick" } }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "Bill" } }, { "id": "Decker-T", "name": { "family": "Decker", "given": "Todd" } }, { "id": "Harp-D-I", "name": { "family": "Harp", "given": "D. Isaiah" } }, { "id": "Kecman-B", "name": { "family": "Kecman", "given": "Branislav" } }, { "id": "Meras-P", "name": { "family": "Meras", "given": "Patrick" } }, { "id": "Raffanti-M", "name": { "family": "Raffanti", "given": "Mike" } }, { "id": "Scholz-C", "name": { "family": "Scholz", "given": "Christopher" } }, { "id": "Smith-C", "name": { "family": "Smith", "given": "Christopher" } }, { "id": "Waldman-J", "name": { "family": "Waldman", "given": "Jeff" } }, { "id": "Wu-James", "name": { "family": "Wu", "given": "James" } } ] }, "title": "Metrology system for measuring mast motions on the NuSTAR mission", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2010 IEEE. \n\nIEEEAC Paper #1223, Version 6, Updated December 24, 2009. \n\nThe research described in this paper was carried out at the Jet Propulsion Laboratory, California Institute of Technology, Space Radiation Laboratory, California Institute of Technology, Space Sciences Laboratory, U.C. Berkeley and Calwest Engineering and was sponsored by the National Aeronautics and Space Administration. \n\nReferences herein to any specific commercial product, process or service by trademark, manufacturer, or otherwise, does not constitute or imply its endorsement by the United States Government or the Jet Propulsion Laboratory, California Institute of Technology, Space Radiation Laboratory, California Institute of Technology, Space Sciences Laboratory, U.C. Berkeley and Calwest Engineering.\n\nPublished - 05446898.pdf
", "abstract": "A metrology system designed and built for the NuSTAR mission is described. The NuSTAR mission is an orbiting X-ray telescope with a 10 meter focal length. The system consists of two laser pointers mounted rigidly together with a star tracker and the X-ray optics. The focused laser beams illuminates two metrology detectors mounted rigidly with the X-ray detectors. The detectors and optics/lasers are separated by a \u223c10 meter deployable (and somewhat flexible) carbon fiber mast. Details about the implementation of the metrology system is discussed in this paper.", "date": "2010-03", "date_type": "published", "publisher": "IEEE", "place_of_pub": "Piscataway, NJ", "pagerange": "Paper #1223", "id_number": "CaltechAUTHORS:20170309-142938327", "isbn": "978-1-4244-3887-7", "book_title": "2010 IEEE Aerospace Conference", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20170309-142938327", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.1109/AERO.2010.5446898", "primary_object": { "basename": "05446898.pdf", "url": "https://authors.library.caltech.edu/records/bw33q-xs818/files/05446898.pdf" }, "pub_year": "2010", "author_list": "Liebe, Carl Christian; Burnham, Jill; et el." }, { "id": "https://authors.library.caltech.edu/records/qnq53-46092", "eprint_id": 23752, "eprint_status": "archive", "datestamp": "2023-08-19 01:07:26", "lastmod": "2024-01-13 05:16:29", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Chen-C-M-Hubert", "name": { "family": "Chen", "given": "C. M. Hubert" } }, { "id": "Baumgartner-W-H", "name": { "family": "Baumgartner", "given": "Wayne H." } }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "Walter R." } }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "Andrew J." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" } ] }, "title": "A Distributed, Real-Time Data Monitoring System as Ground Support Equipment for Balloon-Borne Astronomy Experiments", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2010 Astronomical Society of the Pacific.\nHEFT was funded by the NASA Space Science \"Supporting\nResearch and Technology\" (SR&T) programme under award number NAG5-5398.\n\nPublished - Chen2010p13929Astonomical_Data_Analysis_Software_And_Systems_Xix.pdf
", "abstract": "We present a real-time data-monitoring software suite that we developed for the High Energy Focusing Telescope (HEFT). HEFT was one of the first projects to develop focusing mirrors and detectors for hard X-ray astronomy. We deployed these new technologies on the scientific ballooning platform. During a balloon flight, this so-called 'ground support equipment' (GSE) allows us to monitor the physical condition of the payload, and to inspect preliminary science data in real time, through displays of tables of frequently updated quantities and their averages, time-series plots, histograms, spectra, and images. Unique from previous implementations of GSE s for other experiments, our system is a server-client network that utilises TCP/IP unicast and UDP multicast to enable multiple, concurrent and independent display clients. Most of the code is in Java, and thus platform-independent. We verified that the software suite works on Linux, Mac OS/X and Windows XP, deployed it in two flight campaigns for use during on-site calibration, pre-launch practice drills, and an observation flight of 24 hours. This system, and individual ideas of its implementation, can be adapted for use in future experiments requiring sophisticated real-time monitoring and data display.", "date": "2010", "date_type": "published", "publisher": "Astronomical Society of the Pacific", "place_of_pub": "San Francisco, CA", "pagerange": "229-232", "id_number": "CaltechAUTHORS:20110520-113150583", "isbn": "978-1-58381-748-3", "book_title": "Astronomical data analysis software and systems XIX", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110520-113150583", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-5398" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Mizumoto-Yoshihiko", "name": { "family": "Mizumoto", "given": "Yoshihiko" } }, { "id": "Morita-Koh-Ichiro", "name": { "family": "Morita", "given": "Koh-Ichiro" } }, { "id": "Ohishi-Masatoshi", "name": { "family": "Ohishi", "given": "Masatoshi" } } ] }, "primary_object": { "basename": "Chen2010p13929Astonomical_Data_Analysis_Software_And_Systems_Xix.pdf", "url": "https://authors.library.caltech.edu/records/qnq53-46092/files/Chen2010p13929Astonomical_Data_Analysis_Software_And_Systems_Xix.pdf" }, "pub_year": "2010", "author_list": "Chen, C. M. Hubert; Baumgartner, Wayne H.; et el." }, { "id": "https://authors.library.caltech.edu/records/ahgsv-dxs25", "eprint_id": 84176, "eprint_status": "archive", "datestamp": "2023-08-19 00:02:28", "lastmod": "2024-01-14 19:15:49", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Rana-V-R", "name": { "family": "Rana", "given": "Vikram R." }, "orcid": "0000-0003-1703-8796" }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "Walter R., III" } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Mao-Peter-H", "name": { "family": "Mao", "given": "Peter H." } }, { "id": "Miyasaka-Hiromasa", "name": { "family": "Miyasaka", "given": "Hiromasa" }, "orcid": "0000-0002-8074-4186" } ] }, "title": "Development of focal plane detectors for the Nuclear Spectroscopic Telescope Array (NuSTAR) mission", "ispublished": "unpub", "full_text_status": "public", "keywords": "Hard X-ray astrophysics, pixilated CdZnTe detectors, electronic noise and spectral performance, NuSTAR", "note": "\u00a9 2009 SPIE. \n\nThis work was supported by the NASA APRA program under grant NAG and under the NASA NuSTAR contract, NNG06WC20G.\n\nPublished - 743503.pdf
", "abstract": "The Nuclear Spectroscopic Telescope Array (NuSTAR), scheduled for launch in 2011, is a NASA Small Explorer mission that will improve the current sensitivity for detection of faint astrophysical sources in the 6-80 keV band by two orders of magnitude. NuSTAR achieves high sensitivity by utilizing a hard X-ray focusing system. We have developed Cadmium Zinc Telluride (CdZnTe) pixel detectors optimized for good energy for the NuSTAR focal plane. Each of NuSTAR's two focal planes is comprised of hybrid detectors that consist of a CdZnTe pixel sensor with the anode contacts directly attached to corresponding readout circuits integrated on a custom low-noise VLSI chip. Each hybrid is 20.5 x 20.5 x 2.0 mm in size with the anode divided into 32 x 32 array of pixels at 0.6048 mm. In this paper we describe the hybrid sensor architecture, and present preliminary results from the characterization of detectors fabricated for the NuSTAR focal plane Engineering Test Unit (ETU). We achieve excellent electronic readout noise with an average of 250 eV FWHM, and energy resolution between 0.9 and 1.6 keV FWHM at 86.5 keV, depending on position in the sensor and improving at lower energies. In order to achieve the best spectral resolution we need to make pixeldependent corrections for events with charge split among multiple pixels, and in addition we make spectral corrections based on depth of the gamma-ray interaction.", "date": "2009-09-03", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 743503", "id_number": "CaltechAUTHORS:20180108-152953449", "isbn": "9780819477255", "book_title": "UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XVI", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180108-152953449", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG06WC20G" } ] }, "local_group": { "items": [ { "id": "NuSTAR" }, { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Siegmund-O-H-W", "name": { "family": "Siegmund", "given": "Oswald H. W." } } ] }, "doi": "10.1117/12.825418", "primary_object": { "basename": "743503.pdf", "url": "https://authors.library.caltech.edu/records/ahgsv-dxs25/files/743503.pdf" }, "pub_year": "2009", "author_list": "Rana, Vikram R.; Cook, Walter R., III; et el." }, { "id": "https://authors.library.caltech.edu/records/6ax2r-sj879", "eprint_id": 21394, "eprint_status": "archive", "datestamp": "2023-08-20 02:40:27", "lastmod": "2024-01-13 00:08:09", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "Kristin K." }, "orcid": "0000-0003-1252-4891" }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Mao-Peter-H", "name": { "family": "Mao", "given": "Peter H." } }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "Finn E." }, "orcid": "0000-0001-5679-1946" }, { "id": "Jensen-C-P", "name": { "family": "Jensen", "given": "Carsten P." } }, { "id": "Brejnholt-N", "name": { "family": "Brejnholt", "given": "Nicolai" } }, { "id": "Koglin-J", "name": { "family": "Koglin", "given": "Jason" } }, { "id": "Pivovaroff-M-J", "name": { "family": "Pivovaroff", "given": "Michael J." } } ] }, "title": "Optimizations of Pt/SiC and W/Si multilayers for the Nuclear Spectroscopic Telescope Array", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2009 SPIE.\n\nOnline Publication Date: 31 August 2009.\n\nPublished - Madsen2009p12209Adaptive_Optics_Systems_Pts_1-3.pdf
", "abstract": "The Nuclear Spectroscopic Telescope Array, NuSTAR, is a NASA funded Small Explorer Mission, SMEX, scheduled for launch in mid 2011. The spacecraft will fly two co-aligned conical approximation Wolter-I optics with a focal length of 10 meters. The mirrors will be deposited with Pt/SiC and W/Si multilayers to provide a broad band reflectivity from 6 keV up to 78.4 keV. To optimize the mirror coating we use a Figure of Merit procedure developed for gazing incidence optics, which averages the effective area over the energy range, and combines an energy weighting function with an angular weighting function to control the shape of the desired effective area. The NuSTAR multilayers are depth graded with a power-law, d_i = a/(b + i)^c, and we optimize over the total number of bi-layers, N, c, and the maximum bi-layer thickness, d_(max). The result is a 10 mirror group design optimized for a flat even energy response both on and off-axis.", "date": "2009-08-31", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 743716", "id_number": "CaltechAUTHORS:20101216-103846060", "isbn": "978-0-8194-7727-9", "book_title": "Optics for EUV, X-Ray, and gamma-ray astronomy IV", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20101216-103846060", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" }, { "id": "NuSTAR" } ] }, "contributors": { "items": [ { "id": "O'Dell-S-L", "name": { "family": "O'Dell", "given": "Stephen L." } }, { "id": "Pareschi-G", "name": { "family": "Pareschi", "given": "Giovanni" } } ] }, "doi": "10.1117/12.826669", "primary_object": { "basename": "Madsen2009p12209Adaptive_Optics_Systems_Pts_1-3.pdf", "url": "https://authors.library.caltech.edu/records/6ax2r-sj879/files/Madsen2009p12209Adaptive_Optics_Systems_Pts_1-3.pdf" }, "pub_year": "2009", "author_list": "Madsen, Kristin K.; Harrison, Fiona A.; et el." }, { "id": "https://authors.library.caltech.edu/records/e8bas-akv98", "eprint_id": 84188, "eprint_status": "archive", "datestamp": "2023-08-20 02:38:59", "lastmod": "2024-01-14 19:16:01", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Miyasaka-Hiromasa", "name": { "family": "Miyasaka", "given": "Hiromasa" }, "orcid": "0000-0002-8074-4186" }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "Walter R." } }, { "id": "Mao-Peter-H", "name": { "family": "Mao", "given": "Peter H." } }, { "id": "Rana-V-R", "name": { "family": "Rana", "given": "Vikram R." }, "orcid": "0000-0003-1703-8796" }, { "id": "Ishikawa-Shin-nosuke", "name": { "family": "Ishikawa", "given": "Shin-nosuke" } }, { "id": "Ushio-Masayoshi", "name": { "family": "Ushio", "given": "Masayoshi" } }, { "id": "Aono-Hiroyuki", "name": { "family": "Aono", "given": "Hiroyuki" } }, { "id": "Watanabe-Shin", "name": { "family": "Watanabe", "given": "Shin" } }, { "id": "Sato-Goro", "name": { "family": "Sato", "given": "Goro" } }, { "id": "Kokubun-Motohide", "name": { "family": "Kokubun", "given": "Motohide" } }, { "id": "Takahashi-Tadayuki", "name": { "family": "Takahashi", "given": "Tadayuki" } } ] }, "title": "Development of a cadmium telluride pixel detector for astrophysical applications", "ispublished": "unpub", "full_text_status": "public", "keywords": "hard X-ray astrophysics, CdTe, anode pixelated detector, ASIC, International X-ray Observatory", "note": "\u00a9 2009 SPIE.\n\nPublished - 74350Q.pdf
", "abstract": "We are developing imaging Cadmium Telluride (CdTe) pixel detectors optimized for astrophysical hard X-ray applications. Our hybrid detector consist of a CdTe crystal 1mm thick and 2cm \u00d7 2cm in area with segmented anode contacts directly bonded to a custom low-noise application specific integrated circuit (ASIC). The CdTe sensor, fabricated by ACRORAD (Okinawa, Japan), has Schottky blocking contacts on a 605 micron pitch in a 32 \u00d7 32 array, providing low leakage current and enabling readout of the anode side. The detector is bonded using epoxy-gold stud interconnects to a custom low noise, low power ASIC circuit developed by Caltech's Space Radiation Laboratory. We have achieved very good energy resolution over a wide energy range (0.62keV FWHM @ 60keV, 10.8keV FWHM @ 662keV). We observe polarization effects at room temperature, but they are suppressed if we operate the detector at or below 0\u00b0C degree. These detectors have potential application for future missions such as the International X-ray Observatory (IXO).", "date": "2009-08-21", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "id_number": "CaltechAUTHORS:20180109-103218910", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180109-103218910", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Siegmund-O-H-W", "name": { "family": "Siegmund", "given": "Oswald H." } } ] }, "doi": "10.1117/12.825711", "primary_object": { "basename": "74350Q.pdf", "url": "https://authors.library.caltech.edu/records/e8bas-akv98/files/74350Q.pdf" }, "pub_year": "2009", "author_list": "Miyasaka, Hiromasa; Harrison, Fiona A.; et el." }, { "id": "https://authors.library.caltech.edu/records/c34hd-q8197", "eprint_id": 58340, "eprint_status": "archive", "datestamp": "2023-08-20 02:12:10", "lastmod": "2023-10-23 19:16:16", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "de-Nolfo-Georgia-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "Binns-Walter-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Israel-Martin-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Christian-Eric-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Hams-T", "name": { "family": "Hams", "given": "T." } }, { "id": "Link-J-T", "name": { "family": "Link", "given": "J. T." } }, { "id": "Sasaki-M", "name": { "family": "Sasaki", "given": "M." } }, { "id": "Labrador-Allan-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Waddington-Cecil-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Wiedenbeck-Mark-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Identifying Galactic Cosmic Ray Origins with Super-TIGER", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright University of \u0141\u00f3d\u017a. Department of High Energy Astrophysics, 2010\n\nThis reaearch is supported by NASA under Grant number Super-Tiger NNX09AC17G.\n\nPublished - 2009-27.pdf
", "abstract": "Super-TIGER (Super Trans-Iron Galactic Element Recorder) is a new long-duration balloon-borne instrument designed to test and clarify an emerging model of cosmic-ray origins and models for atomic processes by which nuclei are selected\nfor acceleration. A sensitive test of the origin of cosmic rays is the measurement of ultra heavy elemental abundances (Z 2\". 30). Super-TIGER is a large-area (5 m2) instrument designed to measure the abundances of elements in the interval 30 :<; Z:<; 42 with individual-element resolution and high statistical precision, and make exploratory measurements through Z=60. It will also measure with high\nstatistical accuracy the energy spectra of the more\nabundant elements in the interval 14 :<; Z :<; 30 at\nenergies 0.8 :<; E:<; 10 GeV/nucleon. These spectra will give a sensitive test of the hypothesis that microquasars\nor other sources could superpose spectral features on the otherwise smooth energy spectra previously measured with less statistical accuracy. Super-TIGER builds on the heritage of the smaller TIGER, which produced the first well-resolved measurements of elemental abundances of the elements s1Ga, s2Ge, and 34Se. We present the Super-TIGER\ndesign, schedule, and progress to date, and discuss the relevance of UH measurements to cosmic-ray origins.", "date": "2009-07", "date_type": "published", "publisher": "Department of High Energy Physics, University of Lodz", "id_number": "CaltechAUTHORS:20150618-085648170", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150618-085648170", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX09AC17G" } ] }, "other_numbering_system": { "items": [ { "id": "2009-27", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Szabelski-Jacek", "name": { "family": "Szabelski", "given": "Jacek" } }, { "id": "Giller-M", "name": { "family": "Giller", "given": "M." } } ] }, "primary_object": { "basename": "2009-27.pdf", "url": "https://authors.library.caltech.edu/records/c34hd-q8197/files/2009-27.pdf" }, "pub_year": "2009", "author_list": "de Nolfo, G. A.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/988yf-5ws34", "eprint_id": 57294, "eprint_status": "archive", "datestamp": "2023-08-20 02:12:05", "lastmod": "2023-10-23 17:14:41", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Binns-Walter-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Adams-J-H-Jr", "name": { "family": "Adams", "given": "J. H., Jr." } }, { "id": "Barghouty-A-F", "name": { "family": "Barghouty", "given": "A. F." } }, { "id": "Christian-Eric-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-Alan-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Hams-T", "name": { "family": "Hams", "given": "T." } }, { "id": "Israel-Martin-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Labrador-Allan-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Leske-Richard-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Link-J-T", "name": { "family": "Link", "given": "J. T." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "de-Nolfo-Georgia-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "Sasaki-M", "name": { "family": "Sasaki", "given": "M." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Waddington-Cecil-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Wiedenbeck-Mark-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "The Energetic Trans-Iron Cosmic Ray Experiment (ENTICE)", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright University of \u0141\u00f3d\u017a. Department of High Energy Astrophysics, 2010\n\nThis research was supported by NASA tmder Grant\nNNM08AAIOA\n\nPublished - 2009-07.pdf
", "abstract": "The ENTICE experiment is one of two instruments\nthat comprise the \"Orbiting Astrophysical Spectrometer in Space (OASIS)\", which is presently undergoing a NASA \"Astrophysics Strategic Mission Concept Study\". ENTICE is designed to make high precision measurements of the abundances of individual elements from neon through the actinides and, in addition, will search for possible superheavy nuclei in the galactic cosmic rays. The ENTICE instrument utilizes silicon detectors, aerogel and acrylic\nChercnkov counters, and a scintillating optical fiber\nhodoscope to measure the charge and energy of these ultra-heavy nuclei for energies greater than 0.5\nGeV/nucleon. It is a large instrnment consisting of\nfour modules with a total effective geometrical factor\nof ~20 m^2sr. Measurements made in space for a period of three years with ENTICE will enable us to determine if cosmic rays include a component of recently synthesized transuranic elements _(94)Pu and _(96)Cm, to measure the age of that component, and to test the model of the OB association origin of galactic cosmic rays. Additionally, these observations will enable us to study how diffusive shock acceleration of cosmic rays operates differently on interstellar grains and gas.", "date": "2009-07", "date_type": "published", "publisher": "Department of High Energy Physics, University of Lodz", "id_number": "CaltechAUTHORS:20150506-151441545", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150506-151441545", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNM08AAIOA" } ] }, "other_numbering_system": { "items": [ { "id": "2009-07", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Szabelski-Jacek", "name": { "family": "Szabelski", "given": "Jacek" } }, { "id": "Giller-M", "name": { "family": "Giller", "given": "M." } } ] }, "primary_object": { "basename": "2009-07.pdf", "url": "https://authors.library.caltech.edu/records/988yf-5ws34/files/2009-07.pdf" }, "pub_year": "2009", "author_list": "Binns, W. R.; Adams, J. H., Jr.; et el." }, { "id": "https://authors.library.caltech.edu/records/4n49m-t8r55", "eprint_id": 98910, "eprint_status": "archive", "datestamp": "2023-08-21 20:58:32", "lastmod": "2024-01-14 21:58:17", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Richardson-J-D", "name": { "family": "Richardson", "given": "J. D." }, "orcid": "0000-0003-4041-7540" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "The Solar Wind in the Outer Heliosphere", "ispublished": "unpub", "full_text_status": "restricted", "keywords": "Solar wind; Termination shock; Heliosheath; Heliopause; Pickup ions; Interstellar neutral atoms; Anomalous cosmic rays", "note": "\u00a9 Springer Science+Business Media, BV 2008. \n\nThis work was supported by NASA; at MIT by NASA contract 959203 from JPL to MIT and NASA grant NAG5-8947. \n\nOriginally published in the journal Space Science Reviews, Volume 143, Nos 1\u20134, 7\u201320.", "abstract": "The solar wind evolves as it moves outward due to interactions with both itself and with the circum-heliospheric interstellar medium. The speed is, on average, constant out to 30 AU, then starts a slow decrease due to the pickup of interstellar neutrals. These neutrals reduce the solar wind speed by about 20% before the termination shock (TS). The pickup ions heat the thermal plasma so that the solar wind temperature increases outside 20\u201330 AU. Solar cycle effects are important; the solar wind pressure changes by a factor of 2 over a solar cycle and the structure of the solar wind is modified by interplanetary coronal mass ejections (ICMEs) near solar maximum. The first direct evidences of the TS were the observations of streaming energetic particles by both Voyagers 1 and 2 beginning about 2 years before their respective TS crossings. The second evidence was a slowdown in solar wind speed commencing 80 days before Voyager 2 crossed the TS. The TS was a weak, quasi-perpendicular shock which transferred the solar wind flow energy mainly to the pickup ions. The heliosheath has large fluctuations in the plasma and magnetic field on time scales of minutes to days.", "date": "2009-03", "date_type": "published", "publisher": "Springer", "pagerange": "7-20", "id_number": "CaltechAUTHORS:20190927-135404002", "isbn": "978-1-4419-0246-7", "book_title": "From the Outer Heliosphere to the Local Bubble: Comparisons of New Observations with Theory", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20190927-135404002", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA/JPL", "grant_number": "959203" }, { "agency": "NASA", "grant_number": "NAG5-8947" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Linsky-J-L", "name": { "family": "Linsky", "given": "J. L." } }, { "id": "Izmodenov-V-V", "name": { "family": "Izmodenov", "given": "V. V." } }, { "id": "M\u00f6bius-E", "name": { "family": "M\u00f6bius", "given": "E." } }, { "id": "von-Steiger-R", "name": { "family": "von Steiger", "given": "R." } } ] }, "doi": "10.1007/978-1-4419-0247-4_3", "pub_year": "2009", "author_list": "Richardson, J. D. and Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/exjny-kjt72", "eprint_id": 66687, "eprint_status": "archive", "datestamp": "2023-08-20 00:56:51", "lastmod": "2024-01-13 16:50:18", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Fekel-F-C", "name": { "family": "Fekel", "given": "Francis C." } }, { "id": "Zuckerman-B", "name": { "family": "Zuckerman", "given": "B." } }, { "id": "Williamson-M-H", "name": { "family": "Williamson", "given": "Michael H." } }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "Gregory W." }, "orcid": "0000-0003-4155-8513" }, { "id": "Muno-M-P", "name": { "family": "Muno", "given": "M. P." } } ] }, "title": "The Dusty, Solar Type Spectroscopic Binary BD +20 307", "ispublished": "unpub", "full_text_status": "public", "keywords": "planetary systems: formation - stars: individual(BD +20 307) - binaries: spectroscopic - stars: rotation", "note": "\u00a9 2009 American Institute of Physics. \n\nPublished online 16 February 2009. \n\nThis research was supported in part by NASA through a Chandra Observatory award to UCLA. Automated astronomy at Tennessee State University is supported by NASA, NSF, Tennessee State University, and the State of Tennessee through its Centers of Excellence program.\n\nPublished - 1.3099246.pdf
", "abstract": "The dustiest known main\u2010sequence star, BD +20 307, is actually a double\u2010lined binary with a period of 3.4202 days and a circular orbit. The system is also metal poor with [Fe/H]\u2009=\u2009\u22120.4. The components are late\u2010F and early\u2010G dwarfs and have a mass ratio of 1.07. The photometric period of about 3.5 days indicates that the components are synchronously rotating. The metal poor, binary nature invalidates the idea that the object is a very young single star with a warm planet\u2010making dust disk. Instead, the metal poor nature of the system and the lithium abundances of the components argue that the system is likely several billion years old, and so the dust disk results from the recent collision of two planetary mass rocky objects. Thus, BD +20 307 may well be the first known system with planets orbiting a close binary star.", "date": "2009-02-16", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "836-839", "id_number": "CaltechAUTHORS:20160505-105815810", "isbn": "978-0-7354-0627-8", "book_title": "Cool Stars, Stellar Systems and the Sun", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20160505-105815810", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" }, { "agency": "NSF" }, { "agency": "Tennessee State University" }, { "agency": "State of Tennessee" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Stempels-E", "name": { "family": "Stempels", "given": "Eric" } } ] }, "doi": "10.1063/1.3099246", "primary_object": { "basename": "1.3099246.pdf", "url": "https://authors.library.caltech.edu/records/exjny-kjt72/files/1.3099246.pdf" }, "pub_year": "2009", "author_list": "Fekel, Francis C.; Zuckerman, B.; et el." }, { "id": "https://authors.library.caltech.edu/records/2dep4-5aa85", "eprint_id": 57437, "eprint_status": "archive", "datestamp": "2023-08-20 00:29:01", "lastmod": "2023-10-23 17:23:37", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Ionic Charge States Inferred from Elemental and Isotopic Composition in ^3He-rich Solar Energetic Particle Events", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright University of \u0141\u00f3d\u017a. Department of High Energy Astrophysics, 2010\n\nWe thank Dr. J. Mazur for providing preliminary SAMPEX/LICA charge state measurements for the 20 Aug 2002 event. This work was supported by NASA at Caltech (under grant NX8AI11G), JPL, and GSFC.\n\nPublished - 2009-13.pdf
", "abstract": "Data from the ACE Solar Isotope Spectrometer have been used to study heavy ion elemental and isotopic abundances at energies above 10MeV/nuc in a number of ^3He-rich solar energetic particle events. The isotopic composition observations have revealed a fractionation pattern in which heavy isotopes are enhanced relative to lighter isotopes\nof the same element as a power law in the ratio of the masses. Adopting the assumption that this represents a special case of a general fractionation law in which different ion species are fractionated as a power law in\nQ/M , we infer ionic charge state values (Q) for a number of elements and compare them with direct measurements, when available. The relationship between these Q values and the observed elemental fractionation patterns are discussed.", "date": "2009", "date_type": "published", "publisher": "Caltech Library", "id_number": "CaltechAUTHORS:20150512-092059942", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150512-092059942", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX8AI11G" } ] }, "other_numbering_system": { "items": [ { "id": "2009-13", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Szabelski-J", "name": { "family": "Szabelski", "given": "Jacek" } }, { "id": "Giller-M", "name": { "family": "Giller", "given": "M." } } ] }, "primary_object": { "basename": "2009-13.pdf", "url": "https://authors.library.caltech.edu/records/2dep4-5aa85/files/2009-13.pdf" }, "pub_year": "2009", "author_list": "Wiedenbeck, M. E.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/9dmrh-vj887", "eprint_id": 57884, "eprint_status": "archive", "datestamp": "2023-08-20 00:29:44", "lastmod": "2023-10-23 17:51:00", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Lav\u00e9-J", "name": { "family": "Lav\u00e9", "given": "J." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "A Comparison of ACE Measurements of Galactic Cosmic-Ray Abundances and Energy Spectra for Two Successive Solar Minima", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright University of \u0141\u00f3d\u017a. Department of High Energy Astrophysics, 2010.\n\nThis research is supported by NASA at Caltech, WU, JPL, and GSFC under grant NNX08AI11G. KL would also like to thank NASA for support under grant NNX07AP22H.\n\nPublished - 2009-24.pdf
", "abstract": "Using current solar minimum measurements from the Cosmic Ray Isotope Spectrometer (CRIS) onboard the Advanced Composition Explorer (ACE), we report the observed elemental abundances and energy spectra for C, O, Si, and Fe in the energy range of ~50-500MeV/nucleon. These measurements are compared to prior CRIS observations for the\n1997-98 solar minimum period, when the solar magnetic\nfield was of the opposite polarity. By April 2009, the current solar minimum intensities for each of the four elements has surpassed the peak intensities observed during the previous solar minimum. We also examine the correlation of the galactic cosmic ray intensities with the tilt angle of the heliospheric current sheet. These studies will be important for understanding solar modulation processes, such as changes in drift effects during a solar cycle.", "date": "2009", "date_type": "published", "publisher": "Caltech Library", "id_number": "CaltechAUTHORS:20150528-144715835", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150528-144715835", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX08AI11G" }, { "agency": "NASA", "grant_number": "NNX07AP22H" } ] }, "other_numbering_system": { "items": [ { "id": "2009-24", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Szabelski-J", "name": { "family": "Szabelski", "given": "Jacek" } }, { "id": "Giller-M", "name": { "family": "Giller", "given": "M." } } ] }, "primary_object": { "basename": "2009-24.pdf", "url": "https://authors.library.caltech.edu/records/9dmrh-vj887/files/2009-24.pdf" }, "pub_year": "2009", "author_list": "Lav\u00e9, J.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/w9s3p-s3w97", "eprint_id": 57433, "eprint_status": "archive", "datestamp": "2023-08-20 00:28:57", "lastmod": "2023-10-23 17:23:25", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Binns-Walter-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Cummings-Alan-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Israel-Martin-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Leske-Richard-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "de-Nolfo-Georgia-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "von-Rosenvinge-Tycho-T", "name": { "family": "von Rosenvinge", "given": "T. T." }, "orcid": "0000-0001-7320-4141" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-Mark-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Abundance measurements of Zn, Ga, Ge, & Se from the Cosmic Ray Isotope Spectrometer (Cris) experiment on the Advanced Composition Explorer (ACE) satellite", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright University of \u0141\u00f3d\u017a. Department of High Energy Astrophysics, 2010.\n\nThis work was supported by NASA at Washington\nUniversity (under grant NAG5-12929), Caltech, JPL, and\nGSFC.\n\nPublished - 2009-09.pdf
", "abstract": "The cosmic ray elemental abundances of _(30)Zn, _(31)Ga, _(32)Ge, and _(34)Se provide important tests of the model of the OB-association origin of galactic cosmic rays that has resulted from previous ACE measurements of the neon and iron isotopes and which appears to be confirmed by elemental\nabundances of Zn, Ga, Ge, and Se measured by the balloon-borne Trans-Iron Galactic Element Recorder (TIGER). These ultra-heavy (Z\u226530) nuclei are very rare and require an instrument with a large product of geometrical factor and exposure time. We have measured these abundances using the CRIS instrument, which has a geometrical factor of about 250 cm^2sr, on the NASA-ACE spacecraft. Over the 11+\nyears since launch in 1997 we have collected \u223c400 nuclei with Z\u226530 over the energy range of \u223c150 to 600 MeV/nucleon. These measured abundances relative to iron are presented and compared with those from the TIGER and HEAO-3 experiments. Our measurements are in reasonable agreement with the TIGER results and are consistent with an OB\nassociation origin of galactic cosmic rays.", "date": "2009", "date_type": "published", "publisher": "Department of High Energy Physics, University of Lodz", "id_number": "CaltechAUTHORS:20150512-090444943", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150512-090444943", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-12929" } ] }, "other_numbering_system": { "items": [ { "id": "2009-09", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Szabelski-J", "name": { "family": "Szabelski", "given": "Jacek" } }, { "id": "Giller-M", "name": { "family": "Giller", "given": "M." } } ] }, "primary_object": { "basename": "2009-09.pdf", "url": "https://authors.library.caltech.edu/records/w9s3p-s3w97/files/2009-09.pdf" }, "pub_year": "2009", "author_list": "Binns, W. R.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/ncgz5-v0z85", "eprint_id": 58342, "eprint_status": "archive", "datestamp": "2023-08-20 00:29:59", "lastmod": "2023-10-23 19:16:22", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Adams-J-H-Jr", "name": { "family": "Adams", "given": "J. H., Jr." } }, { "id": "Adams-R", "name": { "family": "Adams", "given": "R." } }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Barghouty-A-F", "name": { "family": "Barghouty", "given": "A. F." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christl-M", "name": { "family": "Christl", "given": "M." } }, { "id": "Cosse-C-B", "name": { "family": "Cosse", "given": "C.B." } }, { "id": "Elrod-S-E", "name": { "family": "Elrod", "given": "S.E." } }, { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "Guzik-T-G", "name": { "family": "Guzik", "given": "T.G." } }, { "id": "Hams-T", "name": { "family": "Hams", "given": "T." } }, { "id": "Isbert-J", "name": { "family": "Isbert", "given": "J." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Krizmanic-J-F", "name": { "family": "Krizmanic", "given": "J. F." } }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Link-J-T", "name": { "family": "Link", "given": "J. T." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Moiseev-A-A", "name": { "family": "Moiseev", "given": "A. A." } }, { "id": "Sasaki-M", "name": { "family": "Sasaki", "given": "M." } }, { "id": "Stochaj-S-J", "name": { "family": "Stochaj", "given": "S. J." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } }, { "id": "Watts-J-W", "name": { "family": "Watts", "given": "J.W." } }, { "id": "Wefel-J-P", "name": { "family": "Wefel", "given": "J.P." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "The Orbiting Astrophysical Spectrometer In Space (OASIS)", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright University of \u0141\u00f3d\u017a. Department of High Energy Astrophysics, 2010\n\nPublished - 2009-28.pdf
", "abstract": "The Orbiting Astrophysical Observatory In Space (OASIS) is an Advanced Concept currently under study at NASA as a mission for the next decade. The goal of the OASIS mission is to identify a local site or sites where galactic cosmic rays (GCR) originate and are accelerated. The mission will also allow GCR data to be used to investigate how elements are made and distributed in the galaxy and to improve our understanding of supernovae and the nucleosynthesis of the heavy elements. OASIS consists of two instruments that provide complementary data on the location and nature of the source(s) through investigating the composition of ultra-heavy nuclei ( ) and the energy spectrum of electrons.\nIn particular OASIS will measure the relative abundances in the actinide group ( ) to determine the age of the -process material in GCRs. The presence of young r-process material would indicate that GCRs are a sample of the interstellar\nmedium in OB associations. OASIS will measure the electron spectrum to 10 TeV. The energy where this spectrum ends will tell us the distance to the nearest GCR source(s). OASIS will look for spectral features and anisotropy in the high energy electron spectrum that are expected to appear when only a few of the nearest astrophysical sources can contribute to the electron flux. Spectral features may also suggest dark matter decay products. We anticipate that these\nmeasurements will lead to the identification of the nearest cosmic ray electron source and provide a crucial test of the OB association model for the origin of GCR nuclei.", "date": "2009", "date_type": "published", "publisher": "Caltech Library", "id_number": "CaltechAUTHORS:20150618-091430431", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150618-091430431", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "2009-28", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Szabelski-J", "name": { "family": "Szabelski", "given": "Jacek" } }, { "id": "Giller-M", "name": { "family": "Giller", "given": "M." } } ] }, "primary_object": { "basename": "2009-28.pdf", "url": "https://authors.library.caltech.edu/records/ncgz5-v0z85/files/2009-28.pdf" }, "pub_year": "2009", "author_list": "Adams, J. H., Jr.; Adams, R.; et el." }, { "id": "https://authors.library.caltech.edu/records/0e1tn-ywk24", "eprint_id": 57889, "eprint_status": "archive", "datestamp": "2023-08-20 00:29:49", "lastmod": "2023-10-23 17:51:05", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "McDonald-Frank-B", "name": { "family": "McDonald", "given": "B." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Cummings-Alan-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Webber-William-R", "name": { "family": "Webber", "given": "W. R." }, "orcid": "0000-0001-9238-9145" }, { "id": "Heikkila-Bryant-C", "name": { "family": "Heikkila", "given": "B. C." } }, { "id": "Lal-Nand", "name": { "family": "Lal", "given": "N." } } ] }, "title": "Voyager Observations of Galactic Ions and Electrons in the Heliosheath", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright University of \u0141\u00f3d\u017a. Department of High Energy Astrophysics, 2010. \n\nThis research was supported by NASA under Grant NNM08AA10A.\n\nPublished - 2009-26.pdf
", "abstract": "Voyager observations of galactic cosmic ray ions and electrons in the heliosheath now extend from 2004.96 to 2009.2, covering a significant part of the cycle 23 recovery from near solar maximum to solar minimum conditions. While the radial intensity gradient of 265 MeV/n GCR He in mid-2008 was 0.1 \u00b1 0.2 %/AU, its rate of intensity increase since mid-2006 has been 7.4 %/year. The rate of increase for lower rigidity GCRs (200 MeV/n He, 260 MeV H) is even higher. 10 MeV electrons are increasing at a\nrate of 60% a year over the same period, strongly supporting a galactic origin for this component. For GCR ions the increase appears to be mainly temporal while for electrons the increase is both temporal and spatial. This continuing increase in cosmic ray intensity may be in part related to the reduced magnetic field strength observed in the inner heliosphere. A comparison of the changes of the GCR ions and electrons suggest that the galactic component may not enter near the nose of the heliosphere but at the\nflanks or in the tail region.", "date": "2009", "date_type": "published", "publisher": "Department of High Energy Physics, University of Lodz", "id_number": "CaltechAUTHORS:20150528-161914668", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150528-161914668", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNM08AA10A" } ] }, "other_numbering_system": { "items": [ { "id": "2009-26", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Szabelski-Jacek", "name": { "family": "Szabelski", "given": "Jacek" } }, { "id": "Giller-M", "name": { "family": "Giller", "given": "M." } } ] }, "primary_object": { "basename": "2009-26.pdf", "url": "https://authors.library.caltech.edu/records/0e1tn-ywk24/files/2009-26.pdf" }, "pub_year": "2009", "author_list": "McDonald, B.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/p21wg-q3b49", "eprint_id": 57848, "eprint_status": "archive", "datestamp": "2023-08-20 00:29:31", "lastmod": "2023-10-23 17:49:17", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "The Unusual Behavior of Anomalous and Galactic Cosmic Ray Intensities at 1 AU During the Present Solar Minimum", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright University of \u0141\u00f3d\u017a. Department of High Energy Astrophysics, 2010.\n\nThis work was supported by NASA grant NNX08AI11G. The Newark neutron monitor of the Bartol Research Institute is supported by NSF grant ATM-0527878. We thank the Wilcox Solar Observatory for making the HCS data publicly available [7], and acknowledge the ACE/SWEPAM team and ACE Science Center for the SWEPAM solar wind data.\n\nPublished - 2009-22.pdf
", "abstract": "Since the early 1970's, anomalous cosmic ray (ACR) intensities at 1 AU at solar minimum have generally tracked the galactic cosmic ray (GCR) intensities as measured by neutron monitors. Throughout the current A<0 cycle, however, the ACR intensities are a factor of 3-4 lower than expected from scaling neutron monitor rates; a similar discrepancy seems to have been present during the last A<0\nperiod in the mid-1980's. Also, although there have\nbeen no major solar particle events for over 2 years,\nand sunspot numbers have been at minimum levels\nfor at least a year, the ACR intensities are at present a\nfactor of ~2 lower than their maximum values during\neach of the last 3 solar minima, suggesting that\nheliospheric conditions are not yet at minimum modulation\nlevels. This is probably associated with the fact that ACRs drift inward along the heliospheric current sheet (HCS) during A<0 cycles, and the tilt of the current sheet is still relatively high (~23\ufffd) for solar minimum. However, while ACR intensities are low, GCR intensities are at a record high, and compared with the last A<0 cycle, we find that both ACR and GCR intensities are actually much higher now for a given HCS tilt angle than they were in the mid-1980's.", "date": "2009", "date_type": "published", "publisher": "Caltech Library", "id_number": "CaltechAUTHORS:20150527-091845568", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150527-091845568", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX8AI11G" }, { "agency": "NSF", "grant_number": "ATM-0527878" } ] }, "other_numbering_system": { "items": [ { "id": "2009-22", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Szabelski-J", "name": { "family": "Szabelski", "given": "Jacek" } }, { "id": "Giller-M", "name": { "family": "Giller", "given": "M." } } ] }, "primary_object": { "basename": "2009-22.pdf", "url": "https://authors.library.caltech.edu/records/p21wg-q3b49/files/2009-22.pdf" }, "pub_year": "2009", "author_list": "Leske, R. A.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/fsgcj-kk470", "eprint_id": 57785, "eprint_status": "archive", "datestamp": "2023-08-20 00:29:17", "lastmod": "2023-10-23 17:45:08", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Multi-Point Observations of Corotating Interaction Regions from STEREO and ACE", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright University of \u0141\u00f3d\u017a. Department of High Energy Astrophysics, 2010\n\nPublished - 2009-19.pdf
", "abstract": "Although solar energetic particle (SEP)\nactivity has been at a minimum for the last few years,\nsignificant particle enhancements due to corotating\ninteraction regions (CIRs) have regularly appeared\nat 1 AU, providing an ideal opportunity to study CIR\nparticles without SEP contamination. Observations\nof CIR time profiles from the two STEREO spacecraft\ncommonly show delays that are often roughly\nas expected from the corotation time lag between\nthe two spacecraft. However, in many cases different\nfeatures seen at Ahead and Behind may suggest\nthat transient disturbances in the solar wind alter\nconnection to or transport from the shock, or that\ntemporal changes occur in the CIR shock itself. We\npresent CIR observations from STEREO and ACE\nat energies from ~2-10 MeV/nucleon and examine\nthe evolution of CIR time profiles as a function\nof spacecraft separation in longitude, radius, and\nheliographic latitude.", "date": "2009", "date_type": "published", "publisher": "Caltech Library", "id_number": "CaltechAUTHORS:20150522-161152863", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150522-161152863", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "2009-19", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Szabelski-J", "name": { "family": "Szabelski", "given": "Jacek" } }, { "id": "Giller-M", "name": { "family": "Giller", "given": "M." } } ] }, "primary_object": { "basename": "2009-19.pdf", "url": "https://authors.library.caltech.edu/records/fsgcj-kk470/files/2009-19.pdf" }, "pub_year": "2009", "author_list": "Leske, R. A.; Mason, G. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/4fc60-68z77", "eprint_id": 57786, "eprint_status": "archive", "datestamp": "2023-08-20 00:29:22", "lastmod": "2023-10-23 17:45:11", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Shih-Albert-Y", "name": { "family": "Shih", "given": "A. Y." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Barghouty-A-F", "name": { "family": "Barghouty", "given": "A. F." } }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Observation and Interpretation of Energetic Neutral Hydrogen Atoms from the December 5, 2006 Solar Flare", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright University of \u0141\u00f3d\u017a. Department of High Energy Astrophysics, 2010\n\nThis work was supported by NASA at Caltech and JPL under NASA contract NAS5-03131. Work at MSFC was supported by the TEI Program of NASAs Office of Chief Engineer. We thank NOAA for GOES X-ray data. We appreciate discussions with Mike Kaiser, Sam Krucker, Bob Lin, Ron Murphy, and Gerry Share. Finally, we thank Eileen Chollet for her assistance with this paper.\n\nPublished - icrc1225.pdf
", "abstract": "Although solar energetic particle (SEP)\nactivity has been at a minimum for the last few years,\nsignificant particle enhancements due to corotating\ninteraction regions (CIRs) have regularly appeared\nat 1 AU, providing an ideal opportunity to study CIR\nparticles without SEP contamination. Observations\nof CIR time profiles from the two STEREO spacecraft\ncommonly show delays that are often roughly\nas expected from the corotation time lag between\nthe two spacecraft. However, in many cases different\nfeatures seen at Ahead and Behind may suggest\nthat transient disturbances in the solar wind alter\nconnection to or transport from the shock, or that\ntemporal changes occur in the CIR shock itself. We\npresent CIR observations from STEREO and ACE\nat energies from ~2-10 MeV/nucleon and examine\nthe evolution of CIR time profiles as a function\nof spacecraft separation in longitude, radius, and\nheliographic latitude.", "date": "2009", "date_type": "published", "publisher": "Caltech Library", "id_number": "CaltechAUTHORS:20150522-161459034", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150522-161459034", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-03131" } ] }, "other_numbering_system": { "items": [ { "id": "2009-20", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Szabelski-J", "name": { "family": "Szabelski", "given": "Jacek" } }, { "id": "Giller-M", "name": { "family": "Giller", "given": "M." } } ] }, "primary_object": { "basename": "icrc1225.pdf", "url": "https://authors.library.caltech.edu/records/4fc60-68z77/files/icrc1225.pdf" }, "pub_year": "2009", "author_list": "Mewaldt, R. A.; Leske, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/55f7c-1ga10", "eprint_id": 57787, "eprint_status": "archive", "datestamp": "2023-08-20 00:29:26", "lastmod": "2023-10-23 17:45:14", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Looper-M-D", "name": { "family": "Looper", "given": "M. D." } }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Haggerty-D-K", "name": { "family": "Haggerty", "given": "D. K." }, "orcid": "0000-0001-6395-8943" }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Masur-J-E", "name": { "family": "Masur", "given": "J. E." } }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Spectra and Properties of Ground-Level Events During Solar Cycle 23", "ispublished": "unpub", "full_text_status": "public", "note": "This work was supported by NASA at Caltech under grants NNX8AI11G and NNX06AC21G, and under subcontract SA2715-26309 from UC Berkeley under NASA contract NAS5-03131. We appreciate the availability of GOES data at the NOAA website and thank Allan Tylka for advice on HEPAD data. Finally, we thank Eileen Chollet for her assistance with this paper.\n\nPublished - 2009-21.pdf
", "abstract": "We report spacecraft measurements of the energy spectra of solar protons and other solar particle properties during the 16 Ground Level Events (GLEs) of Solar Cycle 23. The measurements were made by seven instruments on the ACE, GOES, SAMPEX, and STEREO spacecraft and extend from\n\u00bb0.1 to \u00bb700 MeV. All of the proton spectra exhibit\nspectral breaks at energies ranging from \u00bb2.4 to \u00bb33 MeV and all are well fit by a double power-law shape. A comparison of GLE events with a sample of other SEP events shows that GLEs typically have harder spectra, with a mean slope of -3.17 at >40 MeV/nuc. On average, GLE events are enriched in species associated with impulsive _3He-rich SEP events, including enrichments in Ne/O, Fe/O, ^(22)Ne/^(20)Ne, and elevated mean charge states of Fe. This paper discusses these and other properties of particles measured in situ in GLE events.", "date": "2009", "date_type": "published", "publisher": "Caltech Library", "id_number": "CaltechAUTHORS:20150522-161943572", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150522-161943572", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX8AI11G" }, { "agency": "NASA", "grant_number": "NNX06AC21G" }, { "agency": "NASA", "grant_number": "SA2715-26309" }, { "agency": "NASA", "grant_number": "NAS5-03131" } ] }, "other_numbering_system": { "items": [ { "id": "2009-21", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Cabalero-R", "name": { "family": "Caballero", "given": "R." } }, { "id": "D'Olivo-J-C", "name": { "family": "D'Olivo", "given": "J. C." } }, { "id": "Medina-Tanco-G", "name": { "family": "Medina-Tanco", "given": "G." } }, { "id": "Nellen-L", "name": { "family": "Nellen", "given": "L." } }, { "id": "Sanchez-F-A", "name": { "family": "Sanchez", "given": "F. A." } }, { "id": "Vald\u00e9s-Galicia-J-F", "name": { "family": "Vald\u00e9s-Galicia", "given": "J. F." } } ] }, "primary_object": { "basename": "2009-21.pdf", "url": "https://authors.library.caltech.edu/records/55f7c-1ga10/files/2009-21.pdf" }, "pub_year": "2009", "author_list": "Mewaldt, R. A.; Looper, M. D.; et el." }, { "id": "https://authors.library.caltech.edu/records/aw71x-b0762", "eprint_id": 58953, "eprint_status": "archive", "datestamp": "2023-08-20 00:30:03", "lastmod": "2023-10-23 19:54:30", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Gang-L", "name": { "family": "Gang", "given": "L." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "Can multiple shocks trigger ground level events?", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright University of \u0141\u00f3d\u017a. Department of High Energy Astrophysics, 2010\n\nThis work was supported in part by NASA grants NNX06AC21G, NNH07ZDA001N for GL at UAHuntsville; and by NNX08AI11G and\nNNX06AC21G at Caltech. We thank Christina Cohen for assistance with SEP abundance data.\n\nPublished - 2009-29.pdf
", "abstract": "A total of 16 Ground Level Events (GLE) occurred in solar cycle 23. These events, in which particle energies reach above 1 GeV/nuc, are the most energetic examples of Gradual Solar Energetic Particle (SEP) events. Over the past solar cycle, a great deal has been learned about these events\nobservationally. However, the process by which particles are accelerated to these high energies is still presently unknown. We know the fact that they are often associated with both flares and Coronal Mass Ejection (CME) driven shocks, yet in many other SEP events where both strong flares and fast CMEs are found, the intensities and the maximum energies of energetic particles are often more than 10 to 100 times smaller. So questions such as what triggers\na GLE and what differentiates a GLE from other gradual SEP events remain open. We discuss here a scenario in which two CMEs occur closely in time but offset in propagation direction. We show that the resulting magnetic field configuration can lead to magnetic reconnection. This reconnection process will provide both an excess of seed population and enhanced turbulence level at the shock front of the second CME-driven shock. Enhanced particle accel-\neration can therefore be achieved. The implications of our proposed scenario will be discussed.", "date": "2009", "date_type": "published", "publisher": "University of Lodz, Department of High Energy Astrophysics", "id_number": "CaltechAUTHORS:20150720-154752468", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150720-154752468", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX06AC21G" }, { "agency": "NASA", "grant_number": "NNH07ZDA001N-HGI" }, { "agency": "NASA", "grant_number": "NNX08AI11G" } ] }, "other_numbering_system": { "items": [ { "id": "2009-29", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Szabelski-J", "name": { "family": "Szabelski", "given": "Jacek" } }, { "id": "Giller-M", "name": { "family": "Giller", "given": "M." } } ] }, "primary_object": { "basename": "2009-29.pdf", "url": "https://authors.library.caltech.edu/records/aw71x-b0762/files/2009-29.pdf" }, "pub_year": "2009", "author_list": "Gang, L. and Mewaldt, R. A." }, { "id": "https://authors.library.caltech.edu/records/g2nyx-nmc05", "eprint_id": 57298, "eprint_status": "archive", "datestamp": "2023-08-20 00:28:52", "lastmod": "2023-10-23 17:14:55", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Lave-K-A", "name": { "family": "Lave", "given": "K. A." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "A Comparison of ACE/CRIS Measurements of Galactic\n Cosmic-Ray Abundances and Energy Spectra for Two\n Successive Solar Minima", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright University of \u0141\u00f3d\u017a. Department of High Energy Astrophysics, 2010.\n\nThis research is supported by NASA at Caltech, WU, JPL, and GSFC under grant NNX08All1G. KL would also like to thank NASA for support under grant NNX07 AP22H.\n\nPublished - 2009-08.pdf
", "abstract": "Using current solar minimum measurements\nfrom the Cosmic Ray Isotope Spectrometer\n(CRIS) onboard the Advanced Composition Explorer\n(ACE), we report the observed elemental abundances\nand energy spectra for C, 0, Si, and Fe in the energy\nrange of ~50-500 MeV/nucleon. These measurements\nare compared to prior CRIS observations for the\n1997-98 solar minimum period, when the solar magnetic\nfield was of the opposite polarity. By April 2009,\nthe current solar minimum intensities for each of\nthe four elements has surpassed the peak intensities\nobserved during the previous solar minimum. We\nalso examine the correlation of the galactic cosmicray\nintensities with the tilt angle of the heliospheric\ncurrent sheet. These studies will be important for\nunderstanding solar modulation processes, such as\nchanges in drift effects during a solar cycle.", "date": "2009", "date_type": "published", "publisher": "High Energy Physics Department, University of Lodz", "id_number": "CaltechAUTHORS:20150506-152948443", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150506-152948443", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX07AP22H" }, { "agency": "Jet Propulsion Laboratory (JPL)" }, { "agency": "Washington University" }, { "agency": "Goddard Space Flight Center" } ] }, "other_numbering_system": { "items": [ { "id": "2009-08", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Szabelski-J", "name": { "family": "Szabelski", "given": "Jacek" } }, { "id": "Giller-M", "name": { "family": "Giller", "given": "M." } } ] }, "primary_object": { "basename": "2009-08.pdf", "url": "https://authors.library.caltech.edu/records/g2nyx-nmc05/files/2009-08.pdf" }, "pub_year": "2009", "author_list": "Lave, K. A.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/v2dns-xsj24", "eprint_id": 57882, "eprint_status": "archive", "datestamp": "2023-08-20 00:29:40", "lastmod": "2023-10-23 17:50:54", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Lave-K-A", "name": { "family": "Lave", "given": "K. A." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Time Dependence of Solar Modulation throughout Solar Cycle 23 as Inferred from ACE Measurements of Cosmic-Ray Energy Spectra", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright University of \u0141\u00f3d\u017a. Department of High Energy Astrophysics, 2010.\n\nWe thank Dr. I. Usoskin for providing an extension of the neutron monitor analysis to cover the time period subsequent to that reported in [8]. This work was supported by NASA at Caltech (under grant NNX8AI11G), JPL, Washington U., and GSFC.\n\nPublished - 2009-23.pdf
", "abstract": "Since the launch of the Advanced Composition Explorer (ACE) in August 1997, the Cosmic Ray Isotope Spectrometer (CRIS) has been providing measurements of cosmic-ray energy spectra between \u223c50 and \u223c500 MeV/nuc for a wide range of elements. The shape of these low-energy spectra, which are\nmeasured with good statistical precision on time scales as short as a solar rotation, are strongly influenced by modulation in the heliosphere. By combining calculated local interstellar spectra from a leaky-box propagation model with a sphericallysymmetric, steady-state model of solar modulation, we have derived the time dependence of the modulation strength throughout solar cycle 23. In addition, we have investigated hysteresis effects in the modulation by comparing time dependences at different\nenergies in two ways. First, we have compared values of the modulation parameter, \u03c6, calculated based on CRIS spectral measurements with published values derived from neutron monitor data. Second, we have studied effects over relatively small energy ranges by comparing CRIS intensity measurements at different energies. We report the ACE/CRIS observations, discuss the trends in the data, and compare with previous results on the variations of the solar modulation level over the solar cycle.", "date": "2009", "date_type": "published", "publisher": "Caltech Library", "id_number": "CaltechAUTHORS:20150528-144033949", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150528-144033949", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX8AI11G" } ] }, "other_numbering_system": { "items": [ { "id": "2009-23", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Szabelski-J", "name": { "family": "Szabelski", "given": "Jacek" } }, { "id": "Giller-M", "name": { "family": "Giller", "given": "M." } } ] }, "primary_object": { "basename": "2009-23.pdf", "url": "https://authors.library.caltech.edu/records/v2dns-xsj24/files/2009-23.pdf" }, "pub_year": "2009", "author_list": "Wiedenbeck, M. E.; Davis, A. J.; et el." }, { "id": "https://authors.library.caltech.edu/records/kk936-xtv41", "eprint_id": 57444, "eprint_status": "archive", "datestamp": "2023-08-20 00:29:11", "lastmod": "2023-10-23 17:23:58", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Chollet-E-E", "name": { "family": "Chollet", "given": "E. E." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Desai-M-I", "name": { "family": "Desai", "given": "M. I." }, "orcid": "0000-0002-7318-6008" }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Time Dependent Composition in the December 2006 SEP Events", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright University of \u0141\u00f3d\u017a. Department of High Energy Astrophysics, 2010\n\nThis work was supported by NASA grants NAS5-03131, NNX08AI11G, and NAG5-6912 and NSF grant ATM04-54428.", "abstract": "Multipoint observations of He-rich solar energetic particle (SEP) events using instruments on the ACE and STEREO have been made over the period January 2007 to May 2009, during which the separation between the two STEREO spacecraft\nin heliolongitude increased from 0.5 to 95 . Relatively\nquiet conditions on the Sun allowed identification of probable source regions. In one event (4 November 2008), ions were detected at STEREOB and ACE and electrons at all three spacecraft. The longitudinal distributions of energetic particles from He-rich SEP events are discussed and compared with results from previous studies.", "date": "2009", "date_type": "published", "publisher": "Caltech Library", "id_number": "CaltechAUTHORS:20150512-094808562", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150512-094808562", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "2009-15", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Szabelski-J", "name": { "family": "Szabelski", "given": "Jacek" } }, { "id": "Giller-M", "name": { "family": "Giller", "given": "M." } } ] }, "primary_object": { "basename": "2009-15.pdf", "url": "https://authors.library.caltech.edu/records/kk936-xtv41/files/2009-15.pdf" }, "pub_year": "2009", "author_list": "Cohen, C. M. S.; Mason, G. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/34djg-thr32", "eprint_id": 57440, "eprint_status": "archive", "datestamp": "2023-08-20 00:29:07", "lastmod": "2023-10-23 17:23:47", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "G\u00f3mez-Herrero-R", "name": { "family": "G\u00f3mez-Herrero", "given": "R." } }, { "id": "Haggerty-D-K", "name": { "family": "Haggerty", "given": "D. K." }, "orcid": "0000-0001-6395-8943" }, { "id": "Nitta-N-V", "name": { "family": "Nitta", "given": "N. V." } }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Chollet-E-E", "name": { "family": "Chollet", "given": "E. E." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "M\u00fcller-Mellin-R", "name": { "family": "M\u00fcller-Mellin", "given": "R." } }, { "id": "Desai-M-I", "name": { "family": "Desai", "given": "M. I." }, "orcid": "0000-0002-7318-6008" }, { "id": "Mall-U", "name": { "family": "Mall", "given": "U." } } ] }, "title": "Multipoint Observations of ^3He-rich Solar Energetic Particle Events using STEREO and ACE", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright University of \u0141\u00f3d\u017a. Department of High Energy Astrophysics, 2010.\n\nThis work was supported by NASA at Caltech (under grant NNX8AI11G and UC Berkeley subcontract SA2715-26309 to NASA contract NAS5-03131), JPL, and GSFC, APL, SwRI, and Lockheed-Martin\n\nPublished - 2009-14.pdf
", "abstract": "Multipoint observations of He-rich solar energetic particle (SEP) events using instruments on the ACE and STEREO have been made over the period January 2007 to May 2009, during which the separation between the two STEREO spacecraft\nin heliolongitude increased from ~0.5\u00b0 to 95\u00b0. Relatively\nquiet conditions on the Sun allowed identification of probable source regions. In one event (4 November 2008), ions were detected at STEREOB and ACE and electrons at all three spacecraft. The longitudinal distributions of energetic particles from ^3He-rich SEP events are discussed and compared with results from previous studies.", "date": "2009", "date_type": "published", "publisher": "Caltech Library", "id_number": "CaltechAUTHORS:20150512-093515859", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150512-093515859", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "SA2715-26309" }, { "agency": "NASA", "grant_number": "NAG5-03131" } ] }, "other_numbering_system": { "items": [ { "id": "2009-14", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Szabelski-J", "name": { "family": "Szabelski", "given": "Jacek" } }, { "id": "Giller-M", "name": { "family": "Giller", "given": "M." } } ] }, "primary_object": { "basename": "2009-14.pdf", "url": "https://authors.library.caltech.edu/records/34djg-thr32/files/2009-14.pdf" }, "pub_year": "2009", "author_list": "Wiedenbeck, M. E.; Mason, G. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/2e2xv-qza75", "eprint_id": 14181, "eprint_status": "archive", "datestamp": "2023-08-22 12:47:11", "lastmod": "2024-01-12 23:31:33", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Miyasaka-Hiromasa", "name": { "family": "Miyasaka", "given": "H." }, "orcid": "0000-0002-8074-4186" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "STEREO and ACE observations of CIR particles", "ispublished": "unpub", "full_text_status": "public", "keywords": "interplanetary physics; corotating streams; energetic particles; STEREO; ACE", "note": "\u00a9 2008 American Institute of Physics.\n\nThis work was supported by NASA grants NAS5-03131 and NAG5-12929. We thank\nSTEREO/PLASTIC (NASA contract NAS5-00132) and MAG investigators for making\ntheir data publicly available, and the Wilcox Solar Observatory for the HCS data.\n\nPACS: 96.50.-e,96.50.Qx,96.50.Vg.\n\nPublished - LESaipcp08.pdf
", "abstract": "In the present solar minimum, corotating interaction regions (CIRs) produce frequent particle enhancements at 1 AU as observed at STEREO and ACE. As the two STEREO spacecraft move apart, differences in CIR time profiles observed at each spacecraft are becoming large. The timing differences are often roughly similar to the corotation time lag between the two spacecraft, however many of the features seen at Ahead and Behind require more than just a time shift. Perhaps transient disturbances in the solar wind affect connection to or transport from the shock, or temporal changes occur in the CIR shock itself. Additional timing differences of >1 day result from the different heliographic latitudes of the two STEREO spacecraft", "date": "2008-08-25", "date_type": "published", "publisher": "American Institute of Physics", "pagerange": "131-136", "id_number": "CaltechAUTHORS:20090507-132736204", "isbn": "9780735405660", "book_title": "Particle Acceleration and Transport in the Heliosphere and Beyond\u2014 7th Annual Astrophysics Conference", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20090507-132736204", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-03131" }, { "agency": "NASA", "grant_number": "NAG5-12929" } ] }, "other_numbering_system": { "items": [ { "id": "2008-05", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.1063/1.2982435", "primary_object": { "basename": "LESaipcp08.pdf", "url": "https://authors.library.caltech.edu/records/2e2xv-qza75/files/LESaipcp08.pdf" }, "pub_year": "2008", "author_list": "Leske, R. A.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/sr6s0-k9496", "eprint_id": 14258, "eprint_status": "archive", "datestamp": "2023-08-22 12:47:16", "lastmod": "2024-01-12 23:31:37", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Giacalone-J", "name": { "family": "Giacalone", "given": "J." } }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Chollet-E-E", "name": { "family": "Chollet", "given": "E. E." } }, { "id": "Desai-M-I", "name": { "family": "Desai", "given": "M. I." }, "orcid": "0000-0002-7318-6008" }, { "id": "Haggerty-D-K", "name": { "family": "Haggerty", "given": "D. K." }, "orcid": "0000-0001-6395-8943" }, { "id": "Looper-M-D", "name": { "family": "Looper", "given": "M. D." } }, { "id": "Selesnick-R-S", "name": { "family": "Selesnick", "given": "R. S." } }, { "id": "Vourlidas-A", "name": { "family": "Vourlidas", "given": "A." }, "orcid": "0000-0002-8164-5948" } ] }, "title": "How efficient are coronal mass ejections at accelerating solar energetic particles?", "ispublished": "unpub", "full_text_status": "public", "keywords": "astronomical instruments; solar flares; solar prominences", "note": "\u00a9 2008 American Institute of Physics.\nThis work was supported by NASA under grants NAG5-12929, NNG04GB88B,\nand NNX06AC21G. We appreciate the availability of GOES data from NOAA and\nCME data from SOHO. We acknowledge helpful suggestions by Dave McComas.\nFinally, we thank the organizers for a very productive and enjoyable conference.\n\nPublished - MEWaipcp08.pdf
", "abstract": "The largest solar energetic particle (SEP) events are thought to be due to particle acceleration at a shock driven by a fast coronal mass ejection (CME). We investigate the efficiency of this process by comparing the total energy content of energetic particles with the kinetic energy of the associated CMEs. The energy content of 23 large SEP events from 1998 through 2003 is estimated based on data from ACE, GOES, and SAMPEX, and interpreted using the results of particle transport simulations and inferred longitude distributions. CME data for these events are obtained from SOHO. When compared to the estimated kinetic energy of the associated coronal mass ejections (CMEs), it is found that large SEP events can extract ~10% or more of the CME kinetic energy. The largest SEP events appear to require massive, very energetic CMEs.", "date": "2008-08-25", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "111-117", "id_number": "CaltechAUTHORS:20090518-130926006", "isbn": "978-0-7354-0566-0", "book_title": "Particle Acceleration and Transport in the Heliosphere and Beyond--7th Annual Astrophysics Conference", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20090518-130926006", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-12929" }, { "agency": "NASA", "grant_number": "NNG04GB88B" }, { "agency": "NASA", "grant_number": "NNX06AC21G" } ] }, "other_numbering_system": { "items": [ { "id": "2006-11", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Li-Gang", "name": { "family": "Li", "given": "Gang" } }, { "id": "Hu-Qiang", "name": { "family": "Hu", "given": "Qiang" } }, { "id": "Verkhoglyadova-O", "name": { "family": "Verkhoglyadova", "given": "Olga" } }, { "id": "Zank-G-P", "name": { "family": "Zank", "given": "Gary P." } }, { "id": "Lin-R-P", "name": { "family": "Lin", "given": "R. P." } }, { "id": "Luhmann-J-G", "name": { "family": "Luhmann", "given": "J. G." } } ] }, "doi": "10.1063/1.2982431", "primary_object": { "basename": "MEWaipcp08.pdf", "url": "https://authors.library.caltech.edu/records/sr6s0-k9496/files/MEWaipcp08.pdf" }, "pub_year": "2008", "author_list": "Mewaldt, R. A.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/mnack-gh854", "eprint_id": 14283, "eprint_status": "archive", "datestamp": "2023-08-22 12:47:21", "lastmod": "2024-01-12 23:31:41", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Desai-M-I", "name": { "family": "Desai", "given": "M. I." }, "orcid": "0000-0002-7318-6008" }, { "id": "Dwyer-J-R", "name": { "family": "Dwyer", "given": "J. R." } }, { "id": "Mazur-J-E", "name": { "family": "Mazur", "given": "J. E." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Gold-R-E", "name": { "family": "Gold", "given": "R. E." } }, { "id": "Krimigis-S-M", "name": { "family": "Krimigis", "given": "S. M." }, "orcid": "0000-0003-2781-2386" } ] }, "title": "Abundances and energy spectra of corotating interaction region heavy ions", "ispublished": "unpub", "full_text_status": "public", "keywords": "interplanetary matter; solar cosmic ray particles; solar spectra; solar wind", "note": "\u00a9 2008 American Institute of Physics.\n\n\nThis work was supported in part by NASA under grant NNG04GJ51G at the Johns\nHopkins University/Applied Physics Laboratory. We thank the following\norganizations for permission to publish copyrighted material: American Geophysical\nUnion (Fig. 1, from [1]); and American Astronomical Society (Figs. 2-9, from [7]).\n\nPublished - MASaipcp08.pdf
", "abstract": "We have surveyed He-Fe spectra for 41 Corotating Interaction Regions (CIRs) from 1998\u20132007 observed on ACE. The spectra are similar for all species, and have the form of broken power laws with the spectral break occurring at a few MeV/nucleon. Except for overabundances of He and Ne, the abundances are close to those of the solar wind. We find the rare isotope ^3He is enhanced in ~40% of the events. In individual CIRs the Fe/O ratio correlates strongly with the solar wind Fe/O ratio measured 2\u20134 days prior to the CIR passage. Taken together with previously reported observations of pick-up He^+ in CIRs, these observations provide evidence that CIRs are accelerated out of a suprathermal ion pool of heated solar wind ions, pick-up ions, and remnant suprathermal ions from impulsive solar energetic particle (SEP) events.", "date": "2008-08-25", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "101-110", "id_number": "CaltechAUTHORS:20090521-083239908", "isbn": "978-0-7354-0566-0", "book_title": "Particle acceleration and transport in the heliosphere and beyond: 7th Annual International Astrophysics Conference", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20090521-083239908", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG04GJ51G" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Li-Gang", "name": { "family": "Li", "given": "Gang" } }, { "id": "Hu-Qiang", "name": { "family": "Hu", "given": "Qiang" } }, { "id": "Verkhoglyadova-O", "name": { "family": "Verkhoglyadova", "given": "Olga" } }, { "id": "Zank-G-P", "name": { "family": "Zank", "given": "Gary P." } }, { "id": "Lin-R-P", "name": { "family": "Lin", "given": "R. P." } }, { "id": "Luhmann-J-G", "name": { "family": "Luhmann", "given": "J. G." } } ] }, "doi": "10.1063/1.2982430", "primary_object": { "basename": "MASaipcp08.pdf", "url": "https://authors.library.caltech.edu/records/mnack-gh854/files/MASaipcp08.pdf" }, "pub_year": "2008", "author_list": "Mason, G. M.; Leske, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/rbjbc-k2290", "eprint_id": 14330, "eprint_status": "archive", "datestamp": "2023-08-22 12:47:31", "lastmod": "2024-01-12 23:31:49", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "McDonald-F-B", "name": { "family": "McDonald", "given": "F. B." } }, { "id": "Heikkila-B-C", "name": { "family": "Heikkila", "given": "B. C." } }, { "id": "Lal-Nand", "name": { "family": "Lal", "given": "N." } }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "Anomalous cosmic rays in the heliosheath", "ispublished": "unpub", "full_text_status": "public", "keywords": "Anomalous cosmic rays, solar wind termination shock. Voyager, shock acceleration; PACS: 96.40.Cd, 96.40.De, 96.40.Kk, 96.50.Pw", "note": "\u00a9 2008 American Institute of Physics. \n\nIssue Date: 25 August 2008. \n\nWe appreciate the availability of the LECP^(24) data used in Fig. 4. This work was\nsupported by NASA under contract NAS7-03001.\n\nPublished - CUMaipcp08.pdf
", "abstract": "We report on Voyager 1 and 2 observations of anomalous cosmic rays in the outer heliosphere. The energy spectrum of anomalous cosmic ray helium as each spacecraft crossed the solar wind termination shock into the heliosheath remained modulated. Assuming the intensity gradient between the two spacecraft is purely radial, we find that radial gradients in the heliosheath of He with 11.6\u201322.3 MeV/nuc and with \u223c61\u201373MeV/nuc\u223c61\u201373\u2009MeV/nuc are 4.9\u00b11.2%/AU4.9\u00b11.2%/AU and 0.0\u00b10.5%/AU,0.0\u00b10.5%/AU, respectively. Strong temporal variations of the 11.6\u201322.3 MeV/nuc He intensity at both spacecraft were observed in 2005 just after Voyager 1 crossed the termination shock and while Voyager 2 was upstream. After 2006.0, the intensity variations are more moderate and likely due to a combination of spatial and temporal variations. As of early 2008, the anomalous cosmic ray He energy spectrum has unfolded to what may be a source spectrum. The spectrum at Voyager 2 remains modulated. We examine three recent models of the origin of anomalous cosmic rays in light of these observations.", "date": "2008-08-25", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "343-348", "id_number": "CaltechAUTHORS:20090528-101806583", "isbn": "9780735405660", "book_title": "Particle Acceleration and Transport in the Heliosphere and Beyond", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20090528-101806583", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-03001" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Li-Gang", "name": { "family": "Li", "given": "Gang" } }, { "id": "Hu-Qiang", "name": { "family": "Hu", "given": "Qiang" } }, { "id": "Verkhoglyadova-O", "name": { "family": "Verkhoglyadova", "given": "Olga" } }, { "id": "Zank-G-P", "name": { "family": "Zank", "given": "Gary P." } }, { "id": "Lin-R-P", "name": { "family": "Lin", "given": "R. P." } }, { "id": "Luhmann-J-G", "name": { "family": "Luhmann", "given": "J." } } ] }, "doi": "10.1063/1.2982469", "primary_object": { "basename": "CUMaipcp08.pdf", "url": "https://authors.library.caltech.edu/records/rbjbc-k2290/files/CUMaipcp08.pdf" }, "pub_year": "2008", "author_list": "Cummings, A. C.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/y9hhp-3sz45", "eprint_id": 14301, "eprint_status": "archive", "datestamp": "2023-08-22 12:47:26", "lastmod": "2024-01-12 23:31:45", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Desai-M-I", "name": { "family": "Desai", "given": "M. I." }, "orcid": "0000-0002-7318-6008" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Gold-R-E", "name": { "family": "Gold", "given": "R. E." } }, { "id": "Krimigis-S-M", "name": { "family": "Krimigis", "given": "S. M." }, "orcid": "0000-0003-2781-2386" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Dwyer-J-R", "name": { "family": "Dwyer", "given": "J. R." } }, { "id": "Mazur-J-E", "name": { "family": "Mazur", "given": "J. E." } } ] }, "title": "Seed populations for large solar particle events of cycle 23", "ispublished": "unpub", "full_text_status": "public", "keywords": "Solar Energetic Particles; Particle Acceleration; Sun \u2014 Solar Cycle", "note": "\u00a9 2008 American Institute of Physics. \n\nWork at SwRI is partially supported by NSF grants ATM-0550960 and ATM-0551127 and NASA grants: NNG05GM88G, NNG05GQ94G, NNX07AC12G, NNX07AG85G, NNX07AP69G, and NNX08AK87G. We thank the following organizations for permission to publish copyrighted material: Elsevier (Fig. 2, from [12]); and American Astronomical Society (Fig. 1 from [15] and Fig. 3 from 10]).\n\nPublished - DESaipcp08.pdf
", "abstract": "Using high-resolution mass spectrometers on board the Advanced Composition Explorer (ACE), we surveyed the event-averaged ~0.1-60 MeV/nuc heavy ion elemental composition in 64 large solar energetic particle (LSEP) events of cycle 23. Our results show the following: (1) The rare isotope ^3He is greatly enhanced over the corona or the solar wind values in 46% of the events. (2) The Fe/O ratio decreases with increasing energy up to ~10 MeV/nuc in ~92% of the events and up to ~60 MeV/nuc in ~64% of the events. (3) Heavy ion abundances from C-Fe exhibit systematic M/g-dependent enhancements that are remarkably similar to those seen in ^3He-rich SEP events and CME-driven interplanetary (IP) shock events. Taken together, these results confirm the role of shocks in energizing particles up to ~60 MeV/nuc in the majority of large SEP events of cycle 23, but also show that the seed population is not\ndominated by ions originating from the ambient corona or the thermal solar wind, as previously\nbelieved. Rather, it appears that the source material for CME-associated large SEP events\noriginates predominantly from a suprathermal population with a heavy ion enrichment pattern\nthat is organized according to the ion's mass-per-charge ratio. These new results indicate that\ncurrent LSEP models must include the routine production of this dynamic suprathermal seed\npopulation as a critical pre-cursor to the CME shock acceleration process.", "date": "2008-08-25", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "124-130", "id_number": "CaltechAUTHORS:20090526-130719139", "isbn": "9780735405660", "book_title": "Particle Acceleration and Transport in the Heliosphere and Beyond: 7th Annual International Astrophysics Conference", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20090526-130719139", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "ATM-0550960" }, { "agency": "NSF", "grant_number": "ATM-0551127" }, { "agency": "NASA", "grant_number": "NNG05GM88G" }, { "agency": "NASA", "grant_number": "NNG05GQ94G" }, { "agency": "NASA", "grant_number": "NNX07AC12G" }, { "agency": "NASA", "grant_number": "NNX07AG85G" }, { "agency": "NASA", "grant_number": "NNX07AP69G" }, { "agency": "NASA", "grant_number": "NNX08AK87G" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Li-Gang", "name": { "family": "Li", "given": "G." } }, { "id": "Hu-Qiang", "name": { "family": "Hu", "given": "Q." } }, { "id": "Verkhoglyadova-O", "name": { "family": "Verkhoglyadova", "given": "O." } }, { "id": "Zank-G-P", "name": { "family": "Zank", "given": "G. P." } }, { "id": "Lin-R-P", "name": { "family": "Lin", "given": "R. P." } }, { "id": "Luhmann-J", "name": { "family": "Luhmann", "given": "J." } } ] }, "doi": "10.1063/1.2982434", "primary_object": { "basename": "DESaipcp08.pdf", "url": "https://authors.library.caltech.edu/records/y9hhp-3sz45/files/DESaipcp08.pdf" }, "pub_year": "2008", "author_list": "Desai, M. I.; Mason, G. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/xbk8q-17344", "eprint_id": 14674, "eprint_status": "archive", "datestamp": "2023-08-19 23:31:06", "lastmod": "2024-01-12 23:36:09", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Elemental and isotopic fractionation in 3He-rich solar energetic particle events", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar energetic particles, solar flares, composition, isotopes", "note": "\u00a9 2008 American Institute of Physics. \n\nThis research was supported by NASA at the California Institute of Technology (grant NAG5-12929), the Jet Propulsion Laboratory, and the Goddard Space Flight Center.\n\nPublished - WIEaipcp08.pdf
", "abstract": "Using data from the Solar Isotope Spectrometer (SIS) on the Advanced Composition Explorer (ACE) mission, heavy ion composition measurements have been made in 26^3He-rich solar energetic particle (SEP) events that occurred between 1998 and 2004. Relative abundances of 13 elements from C through Ni have been investigated, as have the isotopic compositions of the elements Ne and Mg. We find a general tendency for the abundances to follow trends similar to those found in gradual SEP events, in which fractionation can be represented in the form of a power-law in Q/M. However several deviations from this pattern are noted that may provide useful diagnostics of the acceleration process occurring in solar flares.", "date": "2008-08-25", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Kauai, HI", "pagerange": "149-155", "id_number": "CaltechAUTHORS:20090727-132850697", "isbn": "9780735405660", "book_title": "Particle Acceleration and Transport in the Heliosphere and Beyond: 7th Annual International Astrophysics Conference", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20090727-132850697", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-12929" } ] }, "other_numbering_system": { "items": [ { "id": "2008-30", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Li-Gang", "name": { "family": "Li", "given": "G." } }, { "id": "Hu-Qiang", "name": { "family": "Hu", "given": "Q." } }, { "id": "Verkhoglyadova-G-P", "name": { "family": "Verkhoglyadova", "given": "G. P." } }, { "id": "Zank-G-P", "name": { "family": "Zank", "given": "Gary P." } }, { "id": "Lin-R-P", "name": { "family": "Lin", "given": "R. P." } }, { "id": "Lulimann-J", "name": { "family": "Lulimann", "given": "J." } } ] }, "doi": "10.1063/1.2982438", "primary_object": { "basename": "WIEaipcp08.pdf", "url": "https://authors.library.caltech.edu/records/xbk8q-17344/files/WIEaipcp08.pdf" }, "pub_year": "2008", "author_list": "Wiedenbeck, M. E.; Leske, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/bc0b7-2dy22", "eprint_id": 13966, "eprint_status": "archive", "datestamp": "2023-08-22 12:47:06", "lastmod": "2024-01-12 23:31:27", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Examination of the last large solar energetic particle events of solar cycle 23", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar energetic particles; composition; particle; acceleration", "note": "\u00a9 2008 American Institute of Physics. \n\nThis work was supported by NASA under grants NAG5-12929 and\nNNX06AC21G, and by NSF under grant ATM-0454428.\n\nPublished - COHaipcp08.pdf
", "abstract": "The last two large solar energetic particle (SEP) events of solar cycle 23 were observed in December 2006 by several spacecraft including ACE and STEREO. Active region\nnumber 10930 rotated over the eastern limb of the Sun already generating intense x-ray flares.\nAs it crossed the disk, it produced 4 X-class flares and at least 3 halo coronal mass ejections.\nThe two dominant SEP events occurred when the region was at ~E70 and ~W25. We have\ncombined particle observations from the Solar Isotope Spectrometer (SIS) and the Ultra-Low\nEnergy Isotope Spectrometer (ULEIS) on ACE and the Low Energy Telescope (LET) on\nSTEREO for each event. Energy spectra for many heavy ion species integrated over the\nduration of each SEP event show distinct differences between the two events. We find the\nsecond event (on December 13) has a much harder spectrum above 10 MeV/nucleon and a 12-60\nMeV/nucleon composition substantially enriched in elements with Z>14 as compared to the first\nevent (on December 6). While the December 6 event is similar in Fe/O to other events with\ncomparable fluence in solar cycle 23, the December 13 event has the highest Fe/O ratio of all\nevents with Si fluence > 100 (cm^2 sr MeV/n)^-1. In composition, this second event is most similar\nto the event of November 6, 1997.", "date": "2008-08-25", "date_type": "published", "publisher": "American Institute of Pliysics", "pagerange": "118-123", "id_number": "CaltechAUTHORS:20090414-092941101", "isbn": "9780735405660", "book_title": "Particle Acceleration and Transport in the Heliosphere and beyond", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20090414-092941101", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-12929" }, { "agency": "NASA", "grant_number": "NNX06AC21G" }, { "agency": "NSF", "grant_number": "ATM-0454428" } ] }, "other_numbering_system": { "items": [ { "id": "2008-31", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Li-Gang", "name": { "family": "Li", "given": "G." } }, { "id": "Hu-Q", "name": { "family": "Hu", "given": "Q." } }, { "id": "Verkhoglyadova-O", "name": { "family": "Verkhoglyadova", "given": "O." } }, { "id": "Zank-G-P", "name": { "family": "Zank", "given": "Gary P." } }, { "id": "Lin-R-P", "name": { "family": "Lin", "given": "R. P." } }, { "id": "Lulimann-J", "name": { "family": "Lulimann", "given": "J." } } ] }, "doi": "10.1063/1.2982432", "primary_object": { "basename": "COHaipcp08.pdf", "url": "https://authors.library.caltech.edu/records/bc0b7-2dy22/files/COHaipcp08.pdf" }, "pub_year": "2008", "author_list": "Cohen, C. M. S.; Mason, G. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/0apam-kvx09", "eprint_id": 56895, "eprint_status": "archive", "datestamp": "2023-08-19 21:51:42", "lastmod": "2023-10-23 16:06:41", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Haggerty-D-K", "name": { "family": "Haggerty", "given": "D. K." }, "orcid": "0000-0001-6395-8943" }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Looper-M-D", "name": { "family": "Looper", "given": "M. D." } }, { "id": "Li-Gang", "name": { "family": "Li", "given": "G." }, "orcid": "0000-0001-9313-251X" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Mazur-M-A", "name": { "family": "Mazur", "given": "M. A." } }, { "id": "Popecki-M-A", "name": { "family": "Popecki", "given": "M. A." } } ] }, "title": "The Charge-to-Mass Dependence of Solar Energetic Particle Spectral Breaks", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universidad Nacional Aut\u00f3noma de M\u00e9xico\n\nThis work was supported by NASA under NNX06AC21G, NNG04GB55G, NNG04088G, and NAS5-12929. We appreciate the use of GOES data provided by NOAA.\n\nPublished - 2008-15.pdf
", "abstract": "Measurements of the energy spectra of SEP events over a broad energy range (~0.1 to 100 MeV/nuc) show that all large SEP events have spectral beaks organized by the charge-to-mass ratio (Q/M) of the ions. In this paper we present preliminary results of a multi-spacecraft study of the Q/M-dependence of spectral breaks in 11 SEP events and investigate whether the deduced Q/M dependence is correlated with other characteristics of the events.", "date": "2008", "date_type": "published", "publisher": "Universidad Nacional Aut\u00f3noma de M\u00e9xico", "id_number": "CaltechAUTHORS:20150422-163629154", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150422-163629154", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX06AC21G" }, { "agency": "NASA", "grant_number": "NNG04GB55G" }, { "agency": "NASA", "grant_number": "NAG5-12929" } ] }, "other_numbering_system": { "items": [ { "id": "2008-15", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Cabalero-R", "name": { "family": "Caballero", "given": "R." } }, { "id": "D'Olivo-J-C", "name": { "family": "D'Olivo", "given": "J. C." } }, { "id": "Medina-Tanco-G", "name": { "family": "Medina-Tanco", "given": "G." } }, { "id": "Nellen-L", "name": { "family": "Nellen", "given": "L." } }, { "id": "Sanchez-F-A", "name": { "family": "Sanchez", "given": "F. A." } }, { "id": "Vald\u00e9s-Galicia-J-F", "name": { "family": "Vald\u00e9s-Galicia", "given": "J. F." } } ] }, "primary_object": { "basename": "2008-15.pdf", "url": "https://authors.library.caltech.edu/records/0apam-kvx09/files/2008-15.pdf" }, "pub_year": "2008", "author_list": "Mewaldt, R. A.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/26jnz-g0225", "eprint_id": 84189, "eprint_status": "archive", "datestamp": "2023-08-19 20:59:49", "lastmod": "2024-01-14 19:16:03", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hong-J", "name": { "family": "Hong", "given": "J." } }, { "id": "Grindlay-J-E", "name": { "family": "Grindlay", "given": "J. E." }, "orcid": "0000-0002-1323-5314" }, { "id": "Chammas-N", "name": { "family": "Chammas", "given": "N." } }, { "id": "Allen-B", "name": { "family": "Allen", "given": "B." } }, { "id": "Copete-A", "name": { "family": "Copete", "given": "A." } }, { "id": "Said-B", "name": { "family": "Said", "given": "B." } }, { "id": "Burke-M", "name": { "family": "Burke", "given": "M." } }, { "id": "Howell-J", "name": { "family": "Howell", "given": "J." }, "orcid": "0000-0002-5924-0629" }, { "id": "Gauron-T", "name": { "family": "Gauron", "given": "T." } }, { "id": "Baker-R-G", "name": { "family": "Baker", "given": "R. G." } }, { "id": "Barthelmy-S-D", "name": { "family": "Barthelmy", "given": "S. D." } }, { "id": "Sheikh-S", "name": { "family": "Sheikh", "given": "S." } }, { "id": "Gehrels-N", "name": { "family": "Gehrels", "given": "N." } }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. R." } }, { "id": "Burnham-J-A", "name": { "family": "Burnham", "given": "J. A." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "F. A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Collins-J", "name": { "family": "Collins", "given": "J." } }, { "id": "Labov-S", "name": { "family": "Labov", "given": "S." } }, { "id": "Garson-A-III", "name": { "family": "Garson", "given": "A., III" } }, { "id": "Krawczynski-H", "name": { "family": "Krawczynski", "given": "H." } } ] }, "title": "Wide-field hard x-ray survey telescope: ProtoEXIST1", "ispublished": "unpub", "full_text_status": "public", "keywords": "pixellated CZT detectors, hard X-ray telescope, coded aperture imaging", "note": "\u00a9 2007 SPIE. \n\nThis work is supported in part by NASA grants NAG5-5279, NAG5-5396 and NNG06WC12G. We dedicate this work\nto the late A. Capote at Aguila Technologies for his pioneering efforts and contributions to the project.\n\nPublished - 67060B.pdf
", "abstract": "We report our progress on the development of pixellated imaging CZT detector arrays for our first-generation balloon-borne wide-field hard X-ray (20 - 600 keV) telescope, ProtoEXIST1. Our ProtoEXIST program is a pathfinder for the High Energy Telescope (HET) on the Energetic X-ray Imaging Survey telescope (EXIST), a proposed implementation of the Black Hole Finder Probe. ProtoEXIST1 consists of four independent coded-aperture telescopes with close-tiled (~0.4 mm gaps) CZT detectors that preserve their 2.5mm pixel pitch. Multiple shielding/field-of-view configurations are planned to identify optimal geometry for the HET in EXIST. The primary technical challenge in ProtoEXIST is the development of large area, close-tiled modules of imaging CZT detectors (1000 cm2 for ProtoEXIST1), with all readout and control systems for the ASIC readout vertically stacked. We describe the overall telescope configuration of ProtoEXIST1 and review the current development status of the CZT detectors, from individual detector crystal units (DCUs) to a full detector module (DM). We have built the first units of each component for the detector plane and have completed a few Rev2 DCUs (2x2 cm^2), which are under a series of tests. Bare DCUs (pre-crystal bonding) show high, uniform ASIC yield (~70%) and ~30% reduction in electronics noise compared to the Rev1 equivalent. A Rev1 DCU already achieved ~1.2% FWHM at 662 keV, and preliminary analysis of the initial radiation tests on a Rev2 DCU shows ~ 4 keV FWHM at 60 keV (vs. 4.7 keV for Rev1). We therefore expect about \u22641% FWHM at 662 keV with the Rev2 detectors.", "date": "2007-09-21", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 67060B", "id_number": "CaltechAUTHORS:20180109-104132388", "isbn": "9780819468543", "book_title": "Hard X-Ray and Gamma-Ray Detector Physics IX", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180109-104132388", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-5279" }, { "agency": "NASA", "grant_number": "NAG5-5396" }, { "agency": "NASA", "grant_number": "NNG06WC12G" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "James-R-B", "name": { "family": "James", "given": "Ralph B." } }, { "id": "Burger-A", "name": { "family": "Burger", "given": "Arnold" } }, { "id": "Franks-L-A", "name": { "family": "Franks", "given": "Larry A." } } ] }, "doi": "10.1117/12.736110", "primary_object": { "basename": "67060B.pdf", "url": "https://authors.library.caltech.edu/records/26jnz-g0225/files/67060B.pdf" }, "pub_year": "2007", "author_list": "Hong, J.; Grindlay, J. E.; et el." }, { "id": "https://authors.library.caltech.edu/records/zgym2-bge82", "eprint_id": 8657, "eprint_status": "archive", "datestamp": "2023-08-22 09:48:48", "lastmod": "2024-01-12 23:12:35", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Haggerty-D-K", "name": { "family": "Haggerty", "given": "D. K." }, "orcid": "0000-0001-6395-8943" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Looper-M-L", "name": { "family": "Looper", "given": "M. L." } }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Radiation risks from large solar energetic particle events", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar cosmic ray particles, solar radiation, solar energetic particles, particle acceleration, coronal mass ejections, radiation risks", "note": "\u00a9 2007 American Institute of Physics \n\nThis work was supported by NASA under NAS5-03131, NAG5-12929, NNG04GB55G and NNX06AC21G. We appreciate the use of GOES data provided by NOAA and thank the organizers for an excellent conference.\n\nPublished - MEWaipcp07.pdf
", "abstract": "Solar energetic particles (SEPs) constitute a radiation hazard to both humans and hardware in space. Over the past few years there have been significant advances in our knowledge of the composition and energy spectra of SEP events, leading to new insights into the conditions that contribute to the largest events. This paper summarizes the energy spectra and frequency of large SEP events, and discusses the interplanetary conditions that affect the intensity of the largest events.", "date": "2007-08-28", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "277-282", "id_number": "CaltechAUTHORS:MEWaipcp07", "isbn": "978-0-7354-0443-4", "book_title": "Turbulence and Nonlinear Processes in Astrophysical Plasmas: 6th Annual International Astrophysics Conference, Oahu, Hawaii, 16-22 March 2007", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:MEWaipcp07", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-03131" }, { "agency": "NASA", "grant_number": "NAG5-12929" }, { "agency": "NASA", "grant_number": "NNG04GB55G" }, { "agency": "NASA", "grant_number": "NNX06AC21G" } ] }, "other_numbering_system": { "items": [ { "id": "2007-06", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Shaikh-D", "name": { "family": "Shaikh", "given": "Dastgeer" } }, { "id": "Zank-G-P", "name": { "family": "Zank", "given": "Gary P." } } ] }, "doi": "10.1063/1.2778975", "primary_object": { "basename": "MEWaipcp07.pdf", "url": "https://authors.library.caltech.edu/records/zgym2-bge82/files/MEWaipcp07.pdf" }, "pub_year": "2007", "author_list": "Mewaldt, R. A.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/qhk80-8a962", "eprint_id": 98519, "eprint_status": "archive", "datestamp": "2023-08-22 09:06:57", "lastmod": "2024-01-14 21:56:01", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Solar Isotopic Composition as Determined Using Solar Energetic Particles", "ispublished": "unpub", "full_text_status": "restricted", "keywords": "Sun: abundances; Sun: particle emission; Sun: coronal mass ejections (CMEs); Sun: flares", "note": "\u00a9 Springer Science+Business Media, LLC 2007. \n\nReceived: 2 February 2007 / Accepted: 3 April 2007 / Published online: 25 May 2007. \n\nThis work was supported by NASA at the California Institute of Technology (grant NAG5-12929), the Jet Propulsion Laboratory, and the Goddard Space Flight Center.", "abstract": "Solar energetic particles (SEPs) provide a sample of the Sun from which solar composition may be determined. Using high-resolution measurements from the Solar Isotope Spectrometer (SIS) onboard NASA's Advanced Composition Explorer (ACE) spacecraft, we have studied the isotopic composition of SEPs at energies \u226520 MeV/nucleon in large SEP events. We present SEP isotope measurements of C, O, Ne, Mg, Si, S, Ar, Ca, Fe, and Ni made in 49 large events from late 1997 to the present. The isotopic composition is highly variable from one SEP event to another due to variations in seed particle composition or due to mass fractionation that occurs during the acceleration and/or transport of these particles. We show that various isotopic and elemental enhancements are correlated with each other, discuss the empirical corrections used to account for the compositional variability, and obtain estimated solar isotopic abundances. We compare the solar values and their uncertainties inferred from SEPs with solar wind and other solar system abundances and find generally good agreement.", "date": "2007-05-25", "date_type": "published", "publisher": "Springer New York", "place_of_pub": "New York, NY", "pagerange": "195-205", "id_number": "CaltechAUTHORS:20190909-133030848", "isbn": "9780387741833", "book_title": "The Composition of Matter", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20190909-133030848", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-12929" }, { "agency": "JPL" }, { "agency": "Goddard Space Flight Center" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "von-Steiger-R", "name": { "family": "von Steiger", "given": "Rudolf" } }, { "id": "Gloeckler-G", "name": { "family": "Gloeckler", "given": "George" } }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "Glenn M." } } ] }, "doi": "10.1007/978-0-387-74184-0_20", "pub_year": "2007", "author_list": "Leske, R. A.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/ktdsp-mae60", "eprint_id": 56617, "eprint_status": "archive", "datestamp": "2023-08-19 19:19:32", "lastmod": "2023-10-23 15:37:42", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Lave-K", "name": { "family": "Lave", "given": "K." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Moskalenko-I-V", "name": { "family": "Moskalenko", "given": "I. V." } }, { "id": "Ogliore-R-C", "name": { "family": "Ogliore", "given": "R. C." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } } ] }, "title": "Cosmic-ray helium intensities over the solar cycle from ACE", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universidad Nacional Aut\u00f3noma de M\u00e9xico\n\nThis work was supported by NASA at GSFC, Caltech,\nJPL, and Washington University in St. Louis.\n\nPublished - 2008-06.pdf
", "abstract": "Observations of cosmic-ray helium energy spectra provide important constraints on cosmic ray origin and propagation. However, helium intensities measured at Earth are affected by solar modulation, especially below several GeV/nucleon. Observations of helium intensities over a solar cycle are important for understanding how solar modulation affects galactic cosmic ray intensities and for separating the contributions of anomalous and galactic cosmic rays. The Cosmic Ray Isotope Spectrometer (CRIS) on ACE has been measuring cosmic ray isotopes, including helium, since 1997 with high statistical precision. We present helium elemental intensities between \u223c10 to \u223c100 MeV/nucleon from the Solar Isotope Spectrometer (SIS) and CRIS observations over a solar cycle and compare these results with the observations from other satellite and balloon-borne instruments, and with GCR transport and solar modulation models.", "date": "2007", "date_type": "published", "publisher": "Universidad Nacional Aut\u00f3noma de M\u00e9xico", "id_number": "CaltechAUTHORS:20150413-154918541", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150413-154918541", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" } ] }, "other_numbering_system": { "items": [ { "id": "2008-06", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Cabalero-R", "name": { "family": "Caballero", "given": "R." } }, { "id": "D'Olivo-J-C", "name": { "family": "D'Olivo", "given": "J. C." } }, { "id": "Medina-Tanco-G", "name": { "family": "Medina-Tanco", "given": "G." } }, { "id": "Nellen-L", "name": { "family": "Nellen", "given": "L." } }, { "id": "Sanchez-F-A", "name": { "family": "Sanchez", "given": "F.A." } }, { "id": "Vald\u00e9s-Galicia-J-F", "name": { "family": "Vald\u00e9s-Galicia", "given": "J. F." } } ] }, "primary_object": { "basename": "2008-06.pdf", "url": "https://authors.library.caltech.edu/records/ktdsp-mae60/files/2008-06.pdf" }, "pub_year": "2007", "author_list": "de Nolfo, G. A.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/8vb53-skh50", "eprint_id": 56605, "eprint_status": "archive", "datestamp": "2023-08-19 19:19:28", "lastmod": "2023-10-23 15:36:49", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Looper-M-L", "name": { "family": "Looper", "given": "M. L." } }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Miyasaka-Hiromasa", "name": { "family": "Miyasaka", "given": "Hiromasa" }, "orcid": "0000-0002-8074-4186" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Observations of the December 2006 solar energetic particle events with the Low Energy Telescope (LET) on STEREO", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universidad Nacional Aut\u00f3noma de M\u00e9xico\n\nThis work was supported by NASA under NAS5-03131, NAG5-12929, and NNG04GB55G. We are grateful to the many individuals and organizations that contributed to the development of LET (see\nthe Acknowledgements in [2]).\n\nPublished - 2008-08.pdf
", "abstract": "NASA's Solar-Terrestrial Relations Observatory (STEREO) was launched in October 2006 carrying an advanced payload of imaging and in situ instrumentation designed to study coronal mass ejections and associated soalr energetic particle (SEP) events and interplanetary effects. Included in the payload is a Low Energy Telescope (LET) designed to measure SEP composition, energy spectra, and anisotropics. This paper describes the LET sensor and measurements of the large solar eruptions of December 2006. These unexpected events fortunately provided opportunities to test the LET hardware and software and to cross-calibrate the LETs and several near-Earth instruments.", "date": "2007", "date_type": "published", "publisher": "Universidad Nacional Aut\u00f3noma de M\u00e9xico", "id_number": "CaltechAUTHORS:20150413-133110805", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150413-133110805", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-03131" }, { "agency": "NASA", "grant_number": "NAG5-12929" } ] }, "other_numbering_system": { "items": [ { "id": "2008-08", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Cabalero-R", "name": { "family": "Caballero", "given": "R." } }, { "id": "D'Olivo-J-C", "name": { "family": "D'Olivo", "given": "J. C." } }, { "id": "Medina-Tanco-G", "name": { "family": "Medina-Tanco", "given": "G." } }, { "id": "Nellen-L", "name": { "family": "Nellen", "given": "L." } }, { "id": "Sanchez-F-A", "name": { "family": "Sanchez", "given": "F.A." } }, { "id": "Vald\u00e9s-Galicia-J-F", "name": { "family": "Vald\u00e9s-Galicia", "given": "J. F." } } ] }, "primary_object": { "basename": "2008-08.pdf", "url": "https://authors.library.caltech.edu/records/8vb53-skh50/files/2008-08.pdf" }, "pub_year": "2007", "author_list": "Mewaldt, R. A.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/psjf9-zta49", "eprint_id": 56735, "eprint_status": "archive", "datestamp": "2023-08-19 19:19:56", "lastmod": "2023-10-23 15:46:42", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Changing anomalous cosmic ray oxygen radial intensity gradients between 1 AU and Voyager with the return to solar minimum", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universidad Nacional Aut\u00f3noma de M\u00e9xico\n\nThis work was supported by NASA (grants NAG5-12929, NAS5-03131, and contract NAS7-03001). COSPIN/LET data were obtained courtesy of the Ulysses Data System, and we acknowledge the National Science Foundation grant ATM-0339527,\nwhich supports the Climax neutron monitor.\n\nPublished - 2008-12.pdf
", "abstract": "Using the Solar Isotope Spectrometer (SIS) on NASA's ACE spacecraft, we have measured the intensities of anomalous cosmic rays (ACRs) near 1 AU down to energies of 10 MeV/nucleon since August 1997. As solar minimum modulation conditions return, ACR intensities at 1 AU are recovering,\nbut are significantly lower relative to galactic cosmic rays (GCRs) than they were during the intensity decline following the last solar minimum and are still a factor of 4 lower than in 1997. The large-scale radial intensity gradients of ACR oxygen obtained using observations from ACE, Voyagers 1 and 2, and Ulysses are much larger during the present A 0 recovery than they were during the last A 0 solar minimum;\nin fact beyond 50 AU ACR intensities already exceed those at the last A 0 solar minimum. The\n1 AU ACR measurements are now being augmented by data from the Low Energy Telescope (LET) on\nthe twin STEREO spacecraft, which will allow us to extend the energy spectra down to 3 MeV/nucleon\nto track the behavior of the peak of the ACR oxygen spectrum and study longitudinal intensity variations.", "date": "2007", "date_type": "published", "publisher": "Universidad Nacional Aut\u00f3noma de M\u00e9xico", "id_number": "CaltechAUTHORS:20150416-150551459", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150416-150551459", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-12929" }, { "agency": "NASA", "grant_number": "NAS5-03131" }, { "agency": "NASA", "grant_number": "NAS7-03001" } ] }, "other_numbering_system": { "items": [ { "id": "2008-12", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Cabalero-R", "name": { "family": "Caballero", "given": "R." } }, { "id": "D'Olivo-J-C", "name": { "family": "D'Olivo", "given": "J. C." } }, { "id": "Medina-Tanco-G", "name": { "family": "Medina-Tanco", "given": "G." } }, { "id": "Nellen-L", "name": { "family": "Nellen", "given": "L." } }, { "id": "Sanchez-F-A", "name": { "family": "Sanchez", "given": "F. A." } }, { "id": "Vald\u00e9s-Galicia-J-F", "name": { "family": "Vald\u00e9s-Galicia", "given": "J. F." } } ] }, "primary_object": { "basename": "2008-12.pdf", "url": "https://authors.library.caltech.edu/records/psjf9-zta49/files/2008-12.pdf" }, "pub_year": "2007", "author_list": "Leske, R. A.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/6qzs5-qjf92", "eprint_id": 57152, "eprint_status": "archive", "datestamp": "2023-08-19 19:20:25", "lastmod": "2023-10-23 17:06:41", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "Geier-S", "name": { "family": "Geier", "given": "S." }, "orcid": "0000-0002-3948-9339" }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Link-J-T", "name": { "family": "Link", "given": "J. T." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Rauch-B-F", "name": { "family": "Rauch", "given": "B. F." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Scott-L-M", "name": { "family": "Scott", "given": "L.M." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Co/Ni Ratio Between 0.8 - 5.0 GeV/nucleon from the TIGER-2001 Flight", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universidad Nacional Aut\u00f3noma de M\u00e9xico.\n\nThis research was supported by the National Aeronautics\nand Space Administration under grant NAGS-5078.\n\nPublished - 2008-22.pdf
", "abstract": "The Trans-Iron Galactic Element Recorder (TIGER) was launched in December 2001 and 2003 from McMurdo, Antarctica and was designed to observe elements ranging from over\nan extended energy range. Observations of radioactive isotopes produced during explosive nucleosynthesis such as Ni that decay only through electron capture provide important constraints on the delay between nucleosynthesis and the acceleration of galactic cosmic rays (GCRs). The isotopes of Co and Ni at low energies, in particular, the observations of the Ni and Co from the Cosmic Ray Isotope\nSpectrometer (CRIS) on the Advanced Composition Explorer, indicate a significant time delay (7.6 10 yr) between GCR nucleosynthesis and acceleration. While TIGER is not able to resolve isotopes, observations of the elemental abundances of Co and Ni at high energies further constrain models for the acceleration and propagation of GCRs. The 2001 2003 flights of TIGER lasted a total of 50 days and\ncollected sufficient statistics to study the Co/Ni elemental ratio over a wide range in energies. We present\nthe elemental ratio of Co/Ni in galactic cosmic rays between 0.8-5.0 GeV/nucleon and compare these results with previous measurements and models for cosmic-ray propagation.", "date": "2007", "date_type": "published", "publisher": "Universidad Nacional Aut\u00f3noma de M\u00e9xico", "id_number": "CaltechAUTHORS:20150501-112031636", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150501-112031636", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGS-5078" } ] }, "other_numbering_system": { "items": [ { "id": "2008-22", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Cabalero-R", "name": { "family": "Caballero", "given": "R." } }, { "id": "D'Olivo-J-C", "name": { "family": "D'Olivo", "given": "J. C." } }, { "id": "Medina-Tanco-G", "name": { "family": "Medina-Tanco", "given": "G." } }, { "id": "Nellen-L", "name": { "family": "Nellen", "given": "L." } }, { "id": "Sanchez-F-A", "name": { "family": "Sanchez", "given": "F. A." } }, { "id": "Vald\u00e9s-Galicia-J-F", "name": { "family": "Vald\u00e9s-Galicia", "given": "J. F." } } ] }, "primary_object": { "basename": "2008-22.pdf", "url": "https://authors.library.caltech.edu/records/6qzs5-qjf92/files/2008-22.pdf" }, "pub_year": "2007", "author_list": "de Nolfo, G. A.; Barbier, L. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/d4xsd-d2v21", "eprint_id": 56892, "eprint_status": "archive", "datestamp": "2023-08-19 19:20:01", "lastmod": "2023-10-23 16:06:31", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Miyasaka-Hiromasa", "name": { "family": "Miyasaka", "given": "H." }, "orcid": "0000-0002-8074-4186" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Observations of corotating interaction regions from STEREO and ACE", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universidad Nacional Aut\u00f3noma de M\u00e9xico\n\nThis work was supported by NASA under grants NAS5-03131 and NAG5-12929.\n\nPublished - 2008-13.pdf
", "abstract": "Abstract: In the present declining phase of the solar cycle, corotating interaction regions (CIRs) have once again become more prevalent. Since the launch of the two STEREO spacecraft in October 2006, several significant recurring particle enhancements due to CIRs have been observed at 1 AU. The Low Energy Telescope (LET) on each STEREO spacecraft has been operating since mid-November 2006. This instrument is capable of measuring elemental composition and spectra for particles from H to Ni (and beyond) from \u223c2 to \u223c50 MeV/nucleon, depending on species, while the Suprathermal Ion Telescope (SIT) on STEREO measures ion composition from \u223c0.05 to 5 MeV/nucleon. Using data from these STEREO instruments, supplemented with measurements from ULEIS and SIS on ACE, we present preliminary observations of H, He, and heavy ion spectra and time profiles of the CIR events of 2007.", "date": "2007", "date_type": "published", "publisher": "Universidad Nacional Aut\u00f3noma de M\u00e9xico", "id_number": "CaltechAUTHORS:20150422-161550254", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150422-161550254", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-12929" }, { "agency": "NASA", "grant_number": "NAG5-03131" } ] }, "other_numbering_system": { "items": [ { "id": "2008-13", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Cabalero-R", "name": { "family": "Caballero", "given": "R." } }, { "id": "D'Olivo-J-C", "name": { "family": "D'Olivo", "given": "J. C." } }, { "id": "Medina-Tanco-G", "name": { "family": "Medina-Tanco", "given": "G." } }, { "id": "Nellen-L", "name": { "family": "Nellen", "given": "L." } }, { "id": "Sanchez-F-A", "name": { "family": "Sanchez", "given": "F. A." } }, { "id": "Vald\u00e9s-Galicia-J-F", "name": { "family": "Vald\u00e9s-Galicia", "given": "J. F." } } ] }, "primary_object": { "basename": "2008-13.pdf", "url": "https://authors.library.caltech.edu/records/d4xsd-d2v21/files/2008-13.pdf" }, "pub_year": "2007", "author_list": "Leske, R. A.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/xg291-7mr32", "eprint_id": 57150, "eprint_status": "archive", "datestamp": "2023-08-19 19:20:21", "lastmod": "2023-10-23 17:06:35", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Can ^(59)Ni Synthesized in OB Associations Decay to ^(59)Co Before Being Accelerated to Cosmic-ray Energies?", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universidad Nacional Aut\u00f3noma de M\u00e9xico.\n\nThis research was supported by NASA at Caltech, WU, the JPL, and GSFC (under Grants NAG5-6912 and NAG5-12929).\n\nPublished - 2008-20.pdf
", "abstract": "Observations from the Cosmic Ray Isotope Spectrometer (CRIS) aboard NASA's Advanced Composition Explorer (ACE) have shown that all relevant galactic cosmic-ray isotopic ratios measured are consistent with an OB-association origin of galactic cosmic rays (GCRs). Additionally\nCRIS measurements of the isotopic abundances of ^(59)Ni and ^(59)Co have shown that the 59Ni has completely decayed into ^(59)Co, indicating a delay of >10^5 years between nucleosynthesis and acceleration. However, it has been suggested that shocks generated from high-velocity Wolf-Rayet winds in the OB-association environment must accelerate nuclei synthesized in nearby core-collapse supernovae on a time scale short compared to the ^(59)Ni half-life of 7.6x10^4 years. If this were the case, it would\nimply that OB associations could not be the source of most galactic cosmic rays. In this paper, we describe the OB-association history and environment and show that the time scales for acceleration are such that most ^(59)Ni should be expected to decay naturally in that setting, strengthening the argument that OB associations are the likely source of a substantial fraction of galactic cosmic rays.", "date": "2007", "date_type": "published", "publisher": "Universidad Nacional Aut\u00f3noma de M\u00e9xico", "id_number": "CaltechAUTHORS:20150501-111243485", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150501-111243485", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" }, { "agency": "NASA", "grant_number": "NAG5-12929" } ] }, "other_numbering_system": { "items": [ { "id": "2008-20", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Cabalero-R", "name": { "family": "Caballero", "given": "R." } }, { "id": "D'Olivo-J-C", "name": { "family": "D'Olivo", "given": "J. C." } }, { "id": "Medina-Tanco-G", "name": { "family": "Medina-Tanco", "given": "G." } }, { "id": "Nellen-L", "name": { "family": "Nellen", "given": "L." } }, { "id": "Sanchez-F-A", "name": { "family": "Sanchez", "given": "F. A." } }, { "id": "Vald\u00e9s-Galicia-J-F", "name": { "family": "Vald\u00e9s-Galicia", "given": "J. F." } } ] }, "primary_object": { "basename": "2008-20.pdf", "url": "https://authors.library.caltech.edu/records/xg291-7mr32/files/2008-20.pdf" }, "pub_year": "2007", "author_list": "Binns, W. R.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/d8jpm-hnh71", "eprint_id": 56693, "eprint_status": "archive", "datestamp": "2023-08-19 19:19:42", "lastmod": "2023-10-23 15:43:46", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Persistent energetic ^3He in the inner heliosphere", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universidad Nacional Aut\u00f3noma de M\u00e9xico\n\nWe thank Glenn Mason for providing the ULEIS data shown in Figs. 1 and 2. This work was supported by NASA at Caltech\n(under grant NAG5-12929), JPL, and GSFC. This work benefited from discussions at international team meetings hosted by the International Space Science Institute (ISSI) in 2006 and 2007.\n\nPublished - 2008-09.pdf
", "abstract": "Using data from the Solar Isotope Spectrometer on NASA's Advanced Composition Explorer spacecraft we have examined the time and energy dependence of the quiet-time 5\u201315 MeV/nuc He intensity from 1998 through 2006 in order to establish the origin of these particles. We find a mixed\npopulation, with He from impulsive solar energetic particle events dominating at the lower end of this energy interval and galactic secondary He becoming significant at the high end.", "date": "2007", "date_type": "published", "publisher": "Universidad Nacional Aut\u00f3noma de M\u00e9xico", "id_number": "CaltechAUTHORS:20150415-152222754", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150415-152222754", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-12929" } ] }, "other_numbering_system": { "items": [ { "id": "2008-09", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Cabalero-R", "name": { "family": "Caballero", "given": "R." } }, { "id": "D'Olivo-J-C", "name": { "family": "D'Olivo", "given": "J. C." } }, { "id": "Medina-Tanco-G", "name": { "family": "Medina-Tanco", "given": "G." } }, { "id": "Nellen-L", "name": { "family": "Nellen", "given": "L." } }, { "id": "Sanchez-F-A", "name": { "family": "Sanchez", "given": "F.A." } }, { "id": "Vald\u00e9s-Galicia-J-F", "name": { "family": "Vald\u00e9s-Galicia", "given": "J. F." } } ] }, "primary_object": { "basename": "2008-09.pdf", "url": "https://authors.library.caltech.edu/records/d8jpm-hnh71/files/2008-09.pdf" }, "pub_year": "2007", "author_list": "Wiedenbeck, M. E.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/xz7ge-1h388", "eprint_id": 57145, "eprint_status": "archive", "datestamp": "2023-08-19 19:20:11", "lastmod": "2023-10-23 17:06:22", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Reames-D-V", "name": { "family": "Reames", "given": "D. V." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "Edward C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "The High Energy Telescopes for the STEREO Mission", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universidad Nacional Aut\u00f3noma de M\u00e9xico.\n\nThis work was supported by NASA (at Caltech and JPL under contract NAS5-00133 and grant NAG5-12929.\n\nPublished - 2008-18.pdf
", "abstract": "We describe the High Energy Telescopes (HETs), which are part of the IMPACT investigation for the STEREO mission (Principal Investigator: Janet Luhmann, University of California atBerkeley). The two STEREO spacecraft were launched from Cape Canaveral, FL on October 25, 2006. High energy electrons (~ 0.7 -6 MeV) and nuclei from hydrogen to iron (~ 13 \u2013 200MeV/nucleon) are detected by the HETs, one on each spacecraft. Observations from one pass through the Earth's magnetosphere and from four X-class solar events in December, 2006 are presented to illustrate the capabilities of the HETs. The HET observations are also compared with observations from other spacecraft. The event of December 13th was the first Ground Level Event in almost two years.", "date": "2007", "date_type": "published", "publisher": "Universidad Nacional Aut\u00f3noma de M\u00e9xico", "id_number": "CaltechAUTHORS:20150501-104753399", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150501-104753399", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-00133" }, { "agency": "NASA", "grant_number": "NAG5-12929" } ] }, "other_numbering_system": { "items": [ { "id": "2008-18", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Cabalero-R", "name": { "family": "Caballero", "given": "R." } }, { "id": "D'Olivo-J-C", "name": { "family": "D'Olivo", "given": "J. C." } }, { "id": "Medina-Tanco-G", "name": { "family": "Medina-Tanco", "given": "G." } }, { "id": "Nellen-L", "name": { "family": "Nellen", "given": "L." } }, { "id": "Sanchez-F-A", "name": { "family": "Sanchez", "given": "F. A." } }, { "id": "Vald\u00e9s-Galicia-J-F", "name": { "family": "Vald\u00e9s-Galicia", "given": "J. F." } } ] }, "primary_object": { "basename": "2008-18.pdf", "url": "https://authors.library.caltech.edu/records/xz7ge-1h388/files/2008-18.pdf" }, "pub_year": "2007", "author_list": "von Rosenvinge, T. T.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/0q30j-ezs88", "eprint_id": 57175, "eprint_status": "archive", "datestamp": "2023-08-19 19:20:39", "lastmod": "2023-10-23 17:07:50", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mulligan-T", "name": { "family": "Mulligan", "given": "T." } }, { "id": "Blake-J-B", "name": { "family": "Blake", "given": "J. B." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "Unusual solar energetic proton fluxes at 1 AU within an interplanetary CME", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universidad Nacional Aut\u00f3noma de M\u00e9xico.\n\nThis work was supported by The Aerospace Corporation's Independent Research and Development\nProgram and by NASA contract NAS5-30368.\n\nPublished - 2008-25.pdf
", "abstract": "In mid December 2006 several flares on the Sun occurred in rapid succession, spawning several CMEs and bathing the Earth in multiple solar energetic particle (SEP) events. O\nne such SEP occurring on December 15th was observed at the Earth just as an interplanetary CME (ICME) from a previous flare on December 13th was transiting the Earth. Although solar wind observations during this time show typical\nenergetic proton fluxes from the prior SEP and IP shock driven ahead of the ICME, as the ICME passes the Earth unusual energetic particle signatures are observed. Measurem\nents from ACE, Wind, and STEREO show unusual proton flux variations at energies ranging from \u223c3 MeV up to greater than 70 MeV. Within the Earth's magnetosphere Polar HIST also sees unusual proton flux v ariations at energies greater than 10 MeV while crossing open field lines in the southern polar cap. However, no such variation in the energetic proton flux is observed at the GOES 10 or GOES 11 spacecraft in geosy nchronous orbit. Differential fluxes observed at GOES 12 in the 15-40 MeV energy range show some\nvariation. However, the overall energetic particle signature within the ICME at GEO orbits remains unclear. This event illustrates the need for caution when using GEO data in detailed studies of SEP events and in interplanetary models of energetic particle transport to 1 AU.", "date": "2007", "date_type": "published", "publisher": "Universidad Nacional Aut\u00f3noma de M\u00e9xico", "id_number": "CaltechAUTHORS:20150504-082537113", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150504-082537113", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-30368" } ] }, "other_numbering_system": { "items": [ { "id": "2008-25", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Cabalero-R", "name": { "family": "Caballero", "given": "R." } }, { "id": "D'Olivo-J-C", "name": { "family": "D'Olivo", "given": "J. C." } }, { "id": "Medina-Tanco-G", "name": { "family": "Medina-Tanco", "given": "G." } }, { "id": "Nellen-L", "name": { "family": "Nellen", "given": "L." } }, { "id": "Sanchez-F-A", "name": { "family": "Sanchez", "given": "F. A." } }, { "id": "Vald\u00e9s-Galicia-J-F", "name": { "family": "Vald\u00e9s-Galicia", "given": "J. F." } } ] }, "primary_object": { "basename": "2008-25.pdf", "url": "https://authors.library.caltech.edu/records/0q30j-ezs88/files/2008-25.pdf" }, "pub_year": "2007", "author_list": "Mulligan, T.; Blake, J. B.; et el." }, { "id": "https://authors.library.caltech.edu/records/k07mm-3fq74", "eprint_id": 56634, "eprint_status": "archive", "datestamp": "2023-08-19 19:19:37", "lastmod": "2023-10-23 15:38:58", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Rauch-B-F", "name": { "family": "Rauch", "given": "B. F." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "Geier-S", "name": { "family": "Geier", "given": "S." }, "orcid": "0000-0002-3948-9339" }, { "id": "Link-J-T", "name": { "family": "Link", "given": "J. T." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Scott-L-M", "name": { "family": "Scott", "given": "L. M." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } } ] }, "title": "Measurement of the Relative Abundances of the Ultra-Heavy Galactic Cosmic Rays (30 \u2264 Z \u2264 40) with TIGER", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universidad Nacional Aut\u00f3noma de M\u00e9xico\n\nThis research was supported in part by a NASA grant, NNG05WC04G, and in part by Washington University. The success of these two balloon flights depended on the excellent support of the Columbia Scientific Balloon Facility, the NSF \nOffice of Polar Programs, and the NASA Balloon Program Office\n\nPublished - 2008-24.pdf
", "abstract": "Observations of ultra-heavy (Z\u226530) galactic cosmic rays (GCR) help to distinguish possible origins of GCR. The Trans-Iron Galactic Element Recorder (TIGER) measures the charge (Z) and energy of GCR using a combination of scintillators, Cherenkov detectors, and a scintillating fiber hodoscope. The two Cherenkov radiators, one acrylic\n and one aerogel, provide TIGER with an energy sensitivity between 0.3 and 10 GeV/nucleon in the instrument. The threshold at the top of the atmosphere is close to 0.8 GeV/nucleon for Fe. TIGER has accumulated data on two successful flights from McMurdo, Antarctica launched in D\necember 2001 and December 2003 with a total flight duration of 50 days. The combined dataset resolves ~140 nuclei with Z > 30, and provides the best measurements to date for \n30Zn, 31Ga, 32Ge, and 34Se. The results for Ga and Ge taken together are inconsistent with a GCR source with\n Solar-System abundances modified either by preferential acceleration of elements of low first ionization potential or by preferential acceleration of refractory elements, \nsuggesting that elemental composition of the GCR source is different from that of the Solar System", "date": "2007", "date_type": "published", "publisher": "Universidad Nacional Aut\u00f3noma de M\u00e9xico", "id_number": "CaltechAUTHORS:20150414-113415014", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150414-113415014", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG05WC04G" } ] }, "other_numbering_system": { "items": [ { "id": "2008-24", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Cabalero-R", "name": { "family": "Caballero", "given": "R." } }, { "id": "D'Olivo-J-C", "name": { "family": "D'Olivo", "given": "J. C." } }, { "id": "Medina-Tanco-G", "name": { "family": "Medina-Tanco", "given": "G." } }, { "id": "Nellen-L", "name": { "family": "Nellen", "given": "L." } }, { "id": "Sanchez-F-A", "name": { "family": "Sanchez", "given": "F.A." } }, { "id": "Vald\u00e9s-Galicia-J-F", "name": { "family": "Vald\u00e9s-Galicia", "given": "J. F." } } ] }, "primary_object": { "basename": "2008-24.pdf", "url": "https://authors.library.caltech.edu/records/k07mm-3fq74/files/2008-24.pdf" }, "pub_year": "2007", "author_list": "Rauch, B. F.; Israel, M. H.; et el." }, { "id": "https://authors.library.caltech.edu/records/rcex4-yx275", "eprint_id": 57153, "eprint_status": "archive", "datestamp": "2023-08-19 19:20:30", "lastmod": "2023-10-23 17:06:43", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Ogliore-R-C", "name": { "family": "Ogliore", "given": "R. C." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Primary and secondary contributions to arriving abundances of cosmic x-ray nuclides", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universidad Nacional Aut\u00f3noma de M\u00e9xico.\n\nThis work was supported by NASA at Caltech (under grant NAG5-12929), JPL, Washington University, and GSFC.\n\nPublished - 2008-21.pdf
", "abstract": "The arriving abundances of a variety of cosmic-ray nuclides consist of comparable amounts of primary material produced by stellar nucleosynthesis and secondary matter resulting from fragmentation of heavier nuclei by collisions during interstellar propagation. We discuss a technique for extracting the primary and secondary contributions that takes advantage of energy spectra of individual nuclides\navailable from the Advanced Composition Explorer mission, a data base of measured and calculated fragmentation cross sections, and the leaky box model of interstellar propagation.", "date": "2007", "date_type": "published", "publisher": "Universidad Nacional Aut\u00f3noma de M\u00e9xico", "id_number": "CaltechAUTHORS:20150501-112052606", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150501-112052606", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-12929" }, { "agency": "Jet Propulsion Laboratory" }, { "agency": "Goddard Space Flight Center (GSFC)" }, { "agency": "Washington University" } ] }, "other_numbering_system": { "items": [ { "id": "2008-21", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Cabalero-R", "name": { "family": "Caballero", "given": "R." } }, { "id": "D'Olivo-J-C", "name": { "family": "D'Olivo", "given": "J. C." } }, { "id": "Medina-Tanco-G", "name": { "family": "Medina-Tanco", "given": "G." } }, { "id": "Nellen-L", "name": { "family": "Nellen", "given": "L." } }, { "id": "Sanchez-F-A", "name": { "family": "Sanchez", "given": "F. A." } }, { "id": "Vald\u00e9s-Galicia-J-F", "name": { "family": "Vald\u00e9s-Galicia", "given": "J. F." } } ] }, "primary_object": { "basename": "2008-21.pdf", "url": "https://authors.library.caltech.edu/records/rcex4-yx275/files/2008-21.pdf" }, "pub_year": "2007", "author_list": "Wiedenbeck, M. E.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/dyhyy-9s895", "eprint_id": 57155, "eprint_status": "archive", "datestamp": "2023-08-19 19:20:35", "lastmod": "2023-10-23 17:06:46", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Ogliore-R-C", "name": { "family": "Ogliore", "given": "R. C." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Moskalenko-I-V", "name": { "family": "Moskalenko", "given": "I. V." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "The P, S, Ar, and Ca isotopic composition of the galactic cosmic ray source", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universidad Nacional Aut\u00f3noma de M\u00e9xico\n\nThis work was supported by NASA at the California Institute of Technology (under grant NAG5-12929). I. V. M. thanks NASA APRA grant for partial support.\n\nPublished - 2008-23.pdf
", "abstract": "Galactic cosmic ray (OCR) measurements of the phosphorus, sulfur, argon, and calcium isotopes made by the Cosmic Ray Isotope Spectrometer (CRIS) aboard NASA's Advanced Composition Explorer are reported aver 1he energy range from ~100 to ~400 MeV/nucleon. The propagation of cosmic rays through the Galaxy and heliosphere is modeled to determine isotopic source abundance ratios ^(31)P/^(32)S, ^(34)S/^(32)S, ^(38)Ar/^(36)Ar, and ^(36)Ar/^(40)Ca. By deriving the OCR source abundance of argon (a noble gas) and calcium (a refractory), it is determined that material in grains is accelerated to OCR energies a factor of ~6.4 more efficiently than gas-phase material in this charge range. With this information the interstellar dust function of phosphorus and sulfur at the cosmic ray source is shown to be consistent with astronomical measurements of hot galactic environments.", "date": "2007", "date_type": "published", "publisher": "Universidad Nacional Aut\u00f3noma de M\u00e9xico", "id_number": "CaltechAUTHORS:20150501-113522940", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150501-113522940", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-12929" } ] }, "other_numbering_system": { "items": [ { "id": "2008-23", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Cabalero-R", "name": { "family": "Caballero", "given": "R." } }, { "id": "D'Olivo-J-C", "name": { "family": "D'Olivo", "given": "J. C." } }, { "id": "Medina-Tanco-G", "name": { "family": "Medina-Tanco", "given": "G." } }, { "id": "Nellen-L", "name": { "family": "Nellen", "given": "L." } }, { "id": "Sanchez-F-A", "name": { "family": "Sanchez", "given": "F. A." } }, { "id": "Vald\u00e9s-Galicia-J-F", "name": { "family": "Vald\u00e9s-Galicia", "given": "J. F." } } ] }, "primary_object": { "basename": "2008-23.pdf", "url": "https://authors.library.caltech.edu/records/dyhyy-9s895/files/2008-23.pdf" }, "pub_year": "2007", "author_list": "Ogliore, R. C.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/3apnk-px332", "eprint_id": 56893, "eprint_status": "archive", "datestamp": "2023-08-19 19:20:06", "lastmod": "2023-10-23 16:06:33", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Comparing observations and expectations of SEP composition in the two December 2006 events", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universidad Nacional Aut\u00f3noma de M\u00e9xico\n\nThis work was supported by NASA and NSF under grants NAS5-12929, NAS5-03131, NNX-06AC21G, NNX06AC27G, and ATM-0454428.\n\nPublished - 2008-14.pdf
", "abstract": "In early December 2006, a large active region (number 10930) rotated over the eastern limb of the Sun. As it crossed the disk, it produced 4 X-class flares and at least 3 halo coronal mass ejections. Two large SEP events\n were generated when the region was at ~E70 and ~W25 and were observed by several spacecraft, including ACE and \nSTEREO. We have combined observations from the Solar Isotope Spectrometer (SIS) and the Ultra-Low Energy Isotope Spectrometer (ULEIS) on ACE and the Low Energy Telescope (LET) on STEREO for both SEP events. By integrating the SEP data over the duration of each event, the energy sp\nectra for many heavy ion species (including Mg, Si, and Ca) can be analyzed in detail and the elemental SEP composition can be compared for the two events. We find significant differences in the composition of the two events, with the second event having a high Fe/O ratio, similar to that of impulsive SEP events. Both events are examined in terms \nof expectations from two prevailing models, but neither model completely predicts the observations.", "date": "2007", "date_type": "published", "publisher": "Universidad Nacional Aut\u00f3noma de M\u00e9xico", "id_number": "CaltechAUTHORS:20150422-162304614", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150422-162304614", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-12929" }, { "agency": "NASA", "grant_number": "NAS5-03131" }, { "agency": "NASA", "grant_number": "NNX06AC21G" }, { "agency": "NASA", "grant_number": "NNX06AC27G" }, { "agency": "NSF", "grant_number": "ATM-0454428" } ] }, "other_numbering_system": { "items": [ { "id": "2008-14", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Cabalero-R", "name": { "family": "Caballero", "given": "R." } }, { "id": "D'Olivo-J-C", "name": { "family": "D'Olivo", "given": "J. C." } }, { "id": "Medina-Tanco-G", "name": { "family": "Medina-Tanco", "given": "G." } }, { "id": "Nellen-L", "name": { "family": "Nellen", "given": "L." } }, { "id": "Sanchez-F-A", "name": { "family": "Sanchez", "given": "F. A." } }, { "id": "Vald\u00e9s-Galicia-J-F", "name": { "family": "Vald\u00e9s-Galicia", "given": "J. F." } } ] }, "primary_object": { "basename": "2008-14.pdf", "url": "https://authors.library.caltech.edu/records/3apnk-px332/files/2008-14.pdf" }, "pub_year": "2007", "author_list": "Cohen, C. M. S.; Mason, G. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/2c3nq-yjv76", "eprint_id": 69169, "eprint_status": "archive", "datestamp": "2023-08-19 19:22:05", "lastmod": "2024-01-13 16:52:30", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Ogliore-R-C", "name": { "family": "Ogliore", "given": "R. C." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Primary and secondary contributions to arriving abundances of cosmic-ray nuclides", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universidad Nacional Aut\u00f3noma de M\u00e9xico.\n\nThis work was supported by\nNASA at Caltech (under grant NAG5-12929), JPL,\nWashington University, and GSFC.\n\nPublished - 2008-33.pdf
", "abstract": "The arriving abundances of a variety of cosmic-ray nuclides consist of comparable amounts of primary material produced by stellar nucleosynthesis and secondary matter resulting from fragmentation of heavier nuclei by collisions during interstellar propagation. In order to utilize such species in studies of cosmic-ray source composition it is necessary to determine the secondary fraction present in the arriving material and to assess the uncertainty in this determination. We have extracted the primary and secondary contributions to the arriving abundances for isotopes of elements between B and Ni by using 1) measurements of cosmic-ray elemental and isotopic composition obtained from the Cosmic Ray Isotope Spectrometer (CRIS) instrument on the Advanced Composition Explorer (ACE) spacecraft, 2) a data base of measured and calculated fragmentation cross sections, and 3) a leaky box model of interstellar propagation. We present derived decompositions and discuss their implications for studies of the composition of cosmic-ray source material. This work was supported by NASA at Caltech (under grant NAG5-12929), JPL, Washington University, and GSFC.", "date": "2007", "date_type": "published", "publisher": "Universidad Nacional Aut\u00f3noma de M\u00e9xico", "id_number": "CaltechAUTHORS:20160722-135442634", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20160722-135442634", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-12929" }, { "agency": "Goddard Space Flight Center" } ] }, "other_numbering_system": { "items": [ { "id": "2008-33", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Cabalero-R", "name": { "family": "Caballero", "given": "R." } }, { "id": "D'Olivo-J-C", "name": { "family": "D'Olivo", "given": "J. C." } }, { "id": "Medina-Tanco-G", "name": { "family": "Medina-Tanco", "given": "G." } }, { "id": "Nellen-L", "name": { "family": "Nellen", "given": "Lukas" } }, { "id": "Sancehz-F-A", "name": { "family": "Sanchez", "given": "F. A." } }, { "id": "Vald\u00e9s-Galicia-J-F", "name": { "family": "Vald\u00e9s-Galicia", "given": "J. F." } } ] }, "primary_object": { "basename": "2008-33.pdf", "url": "https://authors.library.caltech.edu/records/2c3nq-yjv76/files/2008-33.pdf" }, "pub_year": "2007", "author_list": "Wiedenbeck, M. E.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/32hm9-1s478", "eprint_id": 57148, "eprint_status": "archive", "datestamp": "2023-08-19 19:20:16", "lastmod": "2023-10-23 17:06:30", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "McDonald-F-B", "name": { "family": "McDonald", "given": "F. B." } }, { "id": "Heikkila-B-C", "name": { "family": "Heikkila", "given": "B. C." } }, { "id": "Lal-N", "name": { "family": "Lal", "given": "N." } }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "Voyager observations of energetic particles near the solar wind termination shock", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universidad Nacional Aut\u00f3noma de M\u00e9xico\n\nWe thank the Voyager Low Energy Charge Particle\nteam for the use of their data in Figure 3. This work\nwas supported under contract NAS7-03001.\n\nPublished - 2008-19.pdf
", "abstract": "Voyager 1 is observing the energy spectra of anomalous cosmic ray H, He, and O in the heliosheath. The relative abundance of H/He is 20 at 1-1.5 MeV/nuc, indicating that H pickup ions are more efficiently accelerated than was modeled from observations at higher energies. Voyager 2 began observing upstream energetic ions from the shock in late 2004 at \u223c75 AU, about 10 AU closer to the Sun than observed by Voyager 1. Voyager 2 will be at 84.7 AU at the end of 2007 and may have crossed the termination shock.", "date": "2007", "date_type": "published", "publisher": "Universidad Nacional Aut\u00f3noma de M\u00e9xico", "id_number": "CaltechAUTHORS:20150501-110503078", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150501-110503078", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-03001" } ] }, "other_numbering_system": { "items": [ { "id": "2008-19", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Cabalero-R", "name": { "family": "Caballero", "given": "R." } }, { "id": "D'Olivo-J-C", "name": { "family": "D'Olivo", "given": "J. C." } }, { "id": "Medina-Tanco-G", "name": { "family": "Medina-Tanco", "given": "G." } }, { "id": "Nellen-L", "name": { "family": "Nellen", "given": "L." } }, { "id": "Sanchez-F-A", "name": { "family": "Sanchez", "given": "F. A." } }, { "id": "Vald\u00e9s-Galicia-J-F", "name": { "family": "Vald\u00e9s-Galicia", "given": "J. F." } } ] }, "primary_object": { "basename": "2008-19.pdf", "url": "https://authors.library.caltech.edu/records/32hm9-1s478/files/2008-19.pdf" }, "pub_year": "2007", "author_list": "Stone, E. C.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/2xytk-zm886", "eprint_id": 56696, "eprint_status": "archive", "datestamp": "2023-08-19 19:19:51", "lastmod": "2023-10-23 15:44:00", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Can ^(59)Ni Synthesized in OB Associations Decay to ^(59)Co Before Being Accelerated to Cosmic-ray Energies", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universidad Nacional Aut\u00f3noma de M\u00e9xico\n\nThis research was supported by NASA at Caltech, WU, the JPL, and GSFC (under Grants NAG5-6912 and NAG5-12929).\n\nPublished - 2008-11.pdf
", "abstract": "Observations from the Cosmic Ray Isotope Spectrometer (CRIS) aboard NASA's Advanced Composition Explorer (ACE) have shown that all relevant galactic cosmic-ray isotopic ratios measured are consistent with an OB-association origin of galactic cosmic rays (GCRs). Additionally\nCRIS measurements of the isotopic abundances of ^(59)Ni and ^(59)Co have shown that the ^(59)Ni has completely decayed into ^(59)Co, indicating a delay of >105 years between nucleosynthesis and acceleration. However, it has been suggested that shocks generated from high-velocity Wolf-Rayet winds in the OB-association environment must accelerate nuclei synthesized in nearby core-collapse supernovae on a time scale short compared to the ^(59)Ni half-life of 7.6x10^4 years. If this were the case, it would\nimply that OB associations could not be the source of most galactic cosmic rays. In this paper, we describe\nthe OB-association history and environment and show that the time scales for acceleration are such that most ^(59)Ni should be expected to decay naturally in that setting, strengthening the argument that OB associations are the likely source of a substantial fraction of galactic cosmic rays.", "date": "2007", "date_type": "published", "publisher": "Universidad Nacional Aut\u00f3noma de M\u00e9xico", "id_number": "CaltechAUTHORS:20150415-153704362", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150415-153704362", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-12929" } ] }, "other_numbering_system": { "items": [ { "id": "2008-11", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Cabalero-R", "name": { "family": "Caballero", "given": "R." } }, { "id": "D'Olivo-J-C", "name": { "family": "D'Olivo", "given": "J. C." } }, { "id": "Medina-Tanco-G", "name": { "family": "Medina-Tanco", "given": "G." } }, { "id": "Nellen-L", "name": { "family": "Nellen", "given": "L." } }, { "id": "Sanchez-F-A", "name": { "family": "Sanchez", "given": "F. A." } }, { "id": "Vald\u00e9s-Galicia-J-F", "name": { "family": "Vald\u00e9s-Galicia", "given": "J. F." } } ] }, "primary_object": { "basename": "2008-11.pdf", "url": "https://authors.library.caltech.edu/records/2xytk-zm886/files/2008-11.pdf" }, "pub_year": "2007", "author_list": "Binns, W. R.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/n9m2z-c2q35", "eprint_id": 56694, "eprint_status": "archive", "datestamp": "2023-08-19 19:19:47", "lastmod": "2023-10-23 15:43:49", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Possible role of transients on the energy spectra of energetic particles at the solar wind termination shock", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universidad Nacional Aut\u00f3noma de M\u00e9xico\n\nWe thank the Voyager MAG and Plasma teams for the use of their data. This work was supported by NASA under contract NAS7-03001.\n\nPublished - 2008-10.pdf
", "abstract": "We suggest that a series of merged interaction regions interacted with the solar wind termination\nshock for several years prior to its crossing by Voyager 1 in December 2004 and created the observed\nspectral shape of energetic particles. We also find that the charge-state of He with 3 to 70 MeV/nuc\nand O with 1 to 14 MeV/nuc is +1 and that the rigidity dependence of the diffusion coefficient from\n170 MV to 2.7 GV is given by .", "date": "2007", "date_type": "published", "publisher": "Universidad Nacional Aut\u00f3noma de M\u00e9xico", "id_number": "CaltechAUTHORS:20150415-152910440", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150415-152910440", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-03001" } ] }, "other_numbering_system": { "items": [ { "id": "2008-10", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Cabalero-R", "name": { "family": "Caballero", "given": "R." } }, { "id": "D'Olivo-J-C", "name": { "family": "D'Olivo", "given": "J. C." } }, { "id": "Medina-Tanco-G", "name": { "family": "Medina-Tanco", "given": "G." } }, { "id": "Nellen-L", "name": { "family": "Nellen", "given": "L." } }, { "id": "Sanchez-F-A", "name": { "family": "Sanchez", "given": "F. A." } }, { "id": "Vald\u00e9s-Galicia-J-F", "name": { "family": "Vald\u00e9s-Galicia", "given": "J. F." } } ] }, "primary_object": { "basename": "2008-10.pdf", "url": "https://authors.library.caltech.edu/records/n9m2z-c2q35/files/2008-10.pdf" }, "pub_year": "2007", "author_list": "Cummings, A. C. and Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/zm2md-rb662", "eprint_id": 6298, "eprint_status": "archive", "datestamp": "2023-08-22 06:51:45", "lastmod": "2024-01-12 23:12:09", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "McDonald-F-B", "name": { "family": "McDonald", "given": "F. B." } }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Heikkila-B-C", "name": { "family": "Heikkila", "given": "B. C." } }, { "id": "Lal-N", "name": { "family": "Lal", "given": "N." } } ] }, "title": "Voyager observations of galactic and anomalous cosmic rays in the helioshealth", "ispublished": "unpub", "full_text_status": "public", "keywords": "Galactic Cosmic Rays, Anomalous Cosmic Rays, Termination Shock, Heliosheath, Voyager", "note": "\u00a9 2006 American Institute of Physics.\n\nPublished - MCDaipcp06.pdf
", "abstract": "Anomalous cosmic rays display large temporal variations at the time and location where Voyager 1 (V1) crossed the heliospheric termination shock (2004.86) (94AU, 34\u00b0N). On a short time scale (3 months) there was a large decrease produced by a series of merged interaction regions (MIR), the first of which was associated with the intense Oct./Nov. 2003 solar events. On a longer time scale there is a remarkable correlation between changes in the galactic cosmic ray (GCR) intensity and those of 10\u201356 MeV/n ACR He and 30\u201356 MeV H extending over a 4.3 year period with the GCRs exhibiting their expected behavior over this part of the 11 and 22 year solar activity and heliomagnetic cycle. The relative changes in the ACR and GCR are the same for both the short term and long term variations. The comparative V1/V2 ACR and GCR spectra in the foreshock and heliosheath indicate that at this time most of the higher energy ACRs are not being accelerated near V1 but must have their source region elsewhere \u2014 possibly near the equatorial region of the TS as was suggested in our first paper on the TS crossing (1).", "date": "2006-09-26", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "79-85", "id_number": "CaltechAUTHORS:MCDaipcp06", "isbn": "978-0-7354-0355-0", "book_title": "PHYSICS OF THE INNER HELIOSHEATH: Voyager Observations, Theory, and Future Prospects; 5th Annual IGPP International Astrophysics Conference", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:MCDaipcp06", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "name": { "family": "Heerikhuisen", "given": "Jacob" } }, { "name": { "family": "Florinski", "given": "Vladimir" } }, { "name": { "family": "Zank", "given": "Gary P." } }, { "name": { "family": "Pogorelov", "given": "Nikolai V." } } ] }, "doi": "10.1063/1.2359309", "primary_object": { "basename": "MCDaipcp06.pdf", "url": "https://authors.library.caltech.edu/records/zm2md-rb662/files/MCDaipcp06.pdf" }, "pub_year": "2006", "author_list": "McDonald, F. B.; Webber, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/bg5d3-yzv36", "eprint_id": 6297, "eprint_status": "archive", "datestamp": "2023-08-22 06:51:40", "lastmod": "2024-01-12 23:12:07", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Moraal-H", "name": { "family": "Moraal", "given": "H." } }, { "id": "Caballero-Lopez-R-A", "name": { "family": "Caballero-Lopez", "given": "R. A." } }, { "id": "McCracken-K-G", "name": { "family": "McCracken", "given": "K. G." } }, { "id": "McDonald-F-B", "name": { "family": "McDonald", "given": "F. B." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Ptuskin-V", "name": { "family": "Ptsukin", "given": "V." } }, { "id": "Widenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." } } ] }, "title": "Cosmic ray energy changes at the termination shock and in the heliosheath", "ispublished": "unpub", "full_text_status": "public", "keywords": "Cosmic ray spectra, cosmic ray composition, termination shock, heliosheath", "note": "\u00a9 2006 American Institute of Physics. \n\nThis work was supported by UNAM-DGAPA grant IN106105 in Mexico, NSF grant ATM 0107181 in Maryland, NASA grant NAG5-12929 at Caltech and JPL, and the South African National Research Foundation.\n\nPublished - MORaipcp06.pdf
", "abstract": "Voyager 1 crossed the termination shock of the solar wind in December 2004 at 94 AU and currently measures the cosmic ray intensity in the heliosheath. To better understand this modulation region beyond the shock, where adiabatic energy changes should be small, we review the net effect of energy changes during the modulation process, including adiabatic deceleration in the solar wind, acceleration at the termination shock, and the possibility that stochastic acceleration in the heliosheath may also make a contribution.", "date": "2006-09-26", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "219-225", "id_number": "CaltechAUTHORS:MORaipcp06", "isbn": "978-0-7354-0355-0", "book_title": "PHYSICS OF THE INNER HELIOSHEATH: Voyager Observations, Theory, and Future Prospects; 5th Annual IGPP International Astrophysics Conference", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:MORaipcp06", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Universidad Nacional Aut\u00f3noma de M\u00e9xico (UNAM)", "grant_number": "IN106105" }, { "agency": "NSF", "grant_number": "ATM-0107181" }, { "agency": "NASA", "grant_number": "NAG5-12929" }, { "agency": "South African National Research Foundation" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "name": { "family": "Heerikhuisen", "given": "Jacob" } }, { "name": { "family": "Florinski", "given": "Vladimir" } }, { "name": { "family": "Zank", "given": "Gary P." } }, { "name": { "family": "Pogorelov", "given": "Nikolai V." } } ] }, "doi": "10.1063/1.2359331", "primary_object": { "basename": "MORaipcp06.pdf", "url": "https://authors.library.caltech.edu/records/bg5d3-yzv36/files/MORaipcp06.pdf" }, "pub_year": "2006", "author_list": "Moraal, H.; Caballero-Lopez, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/5net5-e5e33", "eprint_id": 15947, "eprint_status": "archive", "datestamp": "2023-08-22 06:51:57", "lastmod": "2024-01-12 23:38:00", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "McDonald-F-B", "name": { "family": "McDonald", "given": "F. B." } }, { "id": "Heikkila-B-C", "name": { "family": "Heikkila", "given": "B. C." } }, { "id": "Lal-N", "name": { "family": "Lal", "given": "N." } }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "Termination shock particle spectral features", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar wind; shock waves; acceleration; Anomalous cosmic rays; solar wind termination shock; Voyager; shock acceleration", "note": "\u00a92006 American Institute of Physics. \n\nIssue Date: 26 September 2006. \n\nThe availability of the LECP data2,7 is greatly appreciated. This work was supported by NASA under contract NAS7-03001.\n\nPublished - CUMaipcp06.pdf
", "abstract": "Spectral features of energetic H ions accelerated at the termination shock may be evidence of two components. At low energies the energy spectrum is ~E^(\u20131.55), with break at ~0.4 MeV to E^(\u20132.2). A second component appears above ~1 MeV with a spectrum of E^(\u20131.27) with a break at ~3.2 MeV. Even though the intensities upstream are highly variable, the same spectral break energies are observed, suggesting that these are durable features of the source spectrum. The acceleration processes for the two components may differ, with the lower energy component serving as the injection source for diffusive shock acceleration of the higher energy component. Alternatively, the spectral features may result from the energy dependence of the diffusion tensor that affects the threshold for diffusive shock acceleration.", "date": "2006-09-26", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "86-91", "id_number": "CaltechAUTHORS:20090918-090238147", "isbn": "978073540355-0", "book_title": "Physics of the Inner Heliosheath: Voyager Observations, Theory, and Future Prospects; 5th Annual IGPP International Astrophysics Conference", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20090918-090238147", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-03001" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Heerikhuisen-J", "name": { "family": "Heerikhuisen", "given": "Jacob" } }, { "id": "Florinski-V", "name": { "family": "Florinksi", "given": "Vladimir" } }, { "id": "Zank-G-P", "name": { "family": "Zank", "given": "Gary P." } }, { "id": "Pogorelov-N-V", "name": { "family": "Pogorelov", "given": "Nikolai V." } } ] }, "doi": "10.1063/1.2359310", "primary_object": { "basename": "CUMaipcp06.pdf", "url": "https://authors.library.caltech.edu/records/5net5-e5e33/files/CUMaipcp06.pdf" }, "pub_year": "2006", "author_list": "Cummings, A. C.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/tjhq4-4de50", "eprint_id": 6296, "eprint_status": "archive", "datestamp": "2023-08-22 06:51:14", "lastmod": "2024-01-12 23:12:05", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "McNutt-R-L-Jr", "name": { "family": "McNutt", "given": "Ralph L., Jr." }, "orcid": "0000-0002-4722-9166" }, { "id": "Gold-R-E", "name": { "family": "Gold", "given": "Robert E." } }, { "id": "Krimigis-T", "name": { "family": "Krimigis", "given": "Tom" } }, { "id": "Roelof-E-C", "name": { "family": "Roelof", "given": "Edmond C." }, "orcid": "0000-0002-2270-0652" }, { "id": "Gruntman-M", "name": { "family": "Gruntman", "given": "Mike" } }, { "id": "Gloeckler-G", "name": { "family": "Gloeckler", "given": "George" } }, { "id": "Koehn-P-L", "name": { "family": "Koehn", "given": "Patrick L." } }, { "id": "Kurth-W-S", "name": { "family": "Kurth", "given": "William S." } }, { "id": "Oleson-S-R", "name": { "family": "Oleson", "given": "Steven R." } }, { "id": "Fiehler-D-I", "name": { "family": "Fiehler", "given": "Douglas I." } }, { "id": "Horanyi-M", "name": { "family": "Horanyi", "given": "Mihaly" } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "Richard A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Leary-J-C", "name": { "family": "Leary", "given": "James C." } }, { "id": "Anderson-B-J", "name": { "family": "Anderson", "given": "Brian J." } } ] }, "title": "Innovative interstellar explorer", "ispublished": "unpub", "full_text_status": "public", "keywords": "space vehicles; space research; interstellar matter; solar wind", "note": "\u00a9 2006 American Institute of Physics. \n\nThis work was supported by NASA Vision Mission grant NNG04GJ60G. We acknowledge contributions of the NASA Jet Propulsion Laboratory's Team-X. The views expressed herein are not necessarily endorsed by the sponsor.\n\nPublished - MCNaipcp06.pdf
", "abstract": "An interstellar \"precursor\" mission has been under discussion in the scientific community for at least 30 years. Fundamental scientific questions about the interaction of the Sun with the interstellar medium can only be answered with in situ measurements that such a mission can provide. The Innovative Interstellar Explorer (IIE) and its use of Radioisotope Electric Propulsion (REP) is being studied under a NASA \"Vision Mission\" grant. Speed is provided by a combination of a high-energy launch, using current launch vehicle technology, a Jupiter gravity assist, and long-term, low-thrust, continuous acceleration provided by an ion thruster running off electricity provided by advanced radioisotope electric generators. A payload of ten instruments with an aggregate mass of ~35 kg and requiring ~30 W has been carefully chosen to address the compelling science questions. The nominal 20-day launch window opens on 22 October 2014 followed by a Jupiter gravity assist on 5 February 2016. The REP system accelerates the spacecraft to a \"burnout\" speed of 7.8 AU per year at 104 AU on 13 October 2032 (Voyager 1's current speed is ~3.6 AU/yr). The spacecraft will return at least 500 bits per second from at least 200 AU ~30 years after launch. Additional (backup) launch opportunities occur every 13 months to early 2018. In addition to addressing basic heliospheric science, the mission will ensure continued information on the far-heliospheric galactic cosmic ray population after the Voyagers have fallen silent and as the era of human Mars exploration begins.", "date": "2006-09-26", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "341-347", "id_number": "CaltechAUTHORS:MCNaipcp06", "isbn": "978-0-7354-0355-0", "book_title": "PHYSICS OF THE INNER HELIOSHEATH: Voyager Observations, Theory, and Future Prospects; 5th Annual IGPP International Astrophysics Conference", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:MCNaipcp06", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG04GJ60G" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "name": { "family": "Heerikhuisen", "given": "Jacob" } }, { "name": { "family": "Florinski", "given": "Vladimir" } }, { "name": { "family": "Zank", "given": "Gary P." } }, { "name": { "family": "Pogorelov", "given": "Nikolai V." } } ] }, "doi": "10.1063/1.2359348", "primary_object": { "basename": "MCNaipcp06.pdf", "url": "https://authors.library.caltech.edu/records/tjhq4-4de50/files/MCNaipcp06.pdf" }, "pub_year": "2006", "author_list": "McNutt, Ralph L., Jr.; Gold, Robert E.; et el." }, { "id": "https://authors.library.caltech.edu/records/x6h6b-xr740", "eprint_id": 6295, "eprint_status": "archive", "datestamp": "2023-08-22 06:51:09", "lastmod": "2024-01-12 23:12:04", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "Implications of multiply-charged anomalous cosmic rays", "ispublished": "unpub", "full_text_status": "public", "keywords": "Anomalous cosmic rays, termination shock, particle acceleration", "note": "\u00a9 2006 American Institute of Physics. \n\nI appreciate very much the use of unpublished charge-state calculations for the CSS model provided by A. C. Cummings. I also acknowledge helpful discussions with A. C. Cummings, E. C. Stone, V. Florinski, J. R. Jokipii, H. Moraal, and C. D. Steenberg. This work was supported by NASA under grants NAG5-12929 and NAG5-8877.\n\nPublished - MEWaipcp06.pdf
", "abstract": "During the acceleration of anomalous cosmic rays (ACRs) some singly-charged ions are stripped of additional electrons. The resulting multiply-charged ions are accelerated more efficiently, and most ACRs with >=30 MeV/nuc are multiply-charged. This paper considers some implications of multiply-charged ACRs, including limits that they place on the time scales for ACR acceleration and transport, and their use in defining the cutoff in the accelerated ACR spectrum. Possible causes of the spectral cutoff in three ACR acceleration models are discussed.", "date": "2006-09-26", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "92-97", "id_number": "CaltechAUTHORS:MEWaipcp06", "isbn": "978-0-7354-0355-0", "book_title": "PHYSICS OF THE INNER HELIOSHEATH: Voyager Observations, Theory, and Future Prospects; 5th Annual IGPP International Astrophysics Conference", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:MEWaipcp06", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-12929" }, { "agency": "NASA", "grant_number": "NAG5-8877" } ] }, "other_numbering_system": { "items": [ { "id": "2006-04", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "name": { "family": "Heerikhuisen", "given": "Jacob" } }, { "name": { "family": "Florinski", "given": "Vladimir" } }, { "name": { "family": "Zank", "given": "Gary P." } }, { "name": { "family": "Pogorelov", "given": "Nikolai V." } } ] }, "doi": "10.1063/1.2359311", "primary_object": { "basename": "MEWaipcp06.pdf", "url": "https://authors.library.caltech.edu/records/x6h6b-xr740/files/MEWaipcp06.pdf" }, "pub_year": "2006", "author_list": "Mewaldt, R. A." }, { "id": "https://authors.library.caltech.edu/records/tnsgx-6rh82", "eprint_id": 6294, "eprint_status": "archive", "datestamp": "2023-08-22 06:51:04", "lastmod": "2024-01-12 23:12:01", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Opher-M", "name": { "family": "Opher", "given": "Merav" } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Liewer-P-C", "name": { "family": "Liewer", "given": "Paulett C." } }, { "id": "Gombosi-T", "name": { "family": "Gombosi", "given": "Tamas" } } ] }, "title": "Global asymmetry of the heliosphere", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar wind; interstellar magnetic fields; hydrogen; shock waves", "note": "\u00a9 2006 American Institute of Physics. \n\nThe authors would like to thanks the use of Columbia cluster NASA Ames. Part of this work is the result of research performed at the Jet Propulsion Laboratory of the California Institute of Technology under a contract with the National Aeronautics and Space Administration.\n\nPublished - OPHaipcp06.pdf
", "abstract": "Opher et al. showed that an interstellar magnetic field parallel to the plane defined by the deflection of interstellar hydrogen atoms can produce a north/south asymmetry in the distortion of the solar wind termination shock. This distortion is consistent with Voyager 1 and Voyager 2 observations of the direction of field-aligned streaming of the termination shock particles upstream the shock. The model also indicates that such a distortion will result in a significant north/south asymmetry in the distance to the shock and the thickness of heliosheath. The two Voyager spacecraft should reveal the nature and degree of the asymmetry in the termination shock and heliosheath.", "date": "2006-09-26", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "45-50", "id_number": "CaltechAUTHORS:OPHaipcp06", "isbn": "978-0-7354-0355-0", "book_title": "PHYSICS OF THE INNER HELIOSHEATH: Voyager Observations, Theory, and Future Prospects; 5th Annual IGPP International Astrophysics Conference", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:OPHaipcp06", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA/JPL/Caltech" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "name": { "family": "Heerikhuisen", "given": "Jacob" } }, { "name": { "family": "Florinski", "given": "Vladimir" } }, { "name": { "family": "Zank", "given": "Gary P." } }, { "name": { "family": "Pogorelov", "given": "Nikolai V." } } ] }, "doi": "10.1063/1.2359304", "primary_object": { "basename": "OPHaipcp06.pdf", "url": "https://authors.library.caltech.edu/records/tnsgx-6rh82/files/OPHaipcp06.pdf" }, "pub_year": "2006", "author_list": "Opher, Merav; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/dfb57-dd698", "eprint_id": 84190, "eprint_status": "archive", "datestamp": "2023-08-19 18:29:18", "lastmod": "2024-01-14 19:16:05", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hong-J", "name": { "family": "Hong", "given": "J." } }, { "id": "Grindlay-J-E", "name": { "family": "Grindlay", "given": "J. E." }, "orcid": "0000-0002-1323-5314" }, { "id": "Chammas-N", "name": { "family": "Chammas", "given": "N." } }, { "id": "Copete-A", "name": { "family": "Copete", "given": "A." } }, { "id": "Baker-R-G", "name": { "family": "Baker", "given": "R. G." } }, { "id": "Barthelmy-S-D", "name": { "family": "Barthelmy", "given": "S. D." } }, { "id": "Gehrels-N", "name": { "family": "Gehrels", "given": "N." } }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. R." } }, { "id": "Burnham-J-A", "name": { "family": "Burnham", "given": "J. A." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "F. A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Collins-J", "name": { "family": "Collins", "given": "J." } }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "W. W." } } ] }, "title": "CZT imaging detectors for Proto EXIST", "ispublished": "unpub", "full_text_status": "public", "keywords": "CZT detector, hard X-ray telescope, spectral response", "note": "\u00a9 2006 SPIE. \n\nThis work is supported in part by NASA grants NAG5-5279, NAG5-5396 and NNG06WC12G. We thank A. Capote at\nAguila Technologies for help on IPB packaging.\n\nPublished - 63190S.pdf
", "abstract": "We describe the detector development for a balloon-borne wide-field hard X-ray (20-600 keV) telescope,ProtoEXIST. ProtoEXIST is a pathfinder for both technology and science of the proposed implementation of the Black Hole Finder Probe, Energetic X-ray Imaging Survey telescope (EXIST). The principal technology challenge is the development of large area, close-tiled modules of imaging CZT detectors (1000 cm^2 forProtoEXIST1). We review the updates of the detector design and package concept for ProtoEXIST1 and report the current development status of the CZT detectors, using calibration results of our basic detector unit - 2 x 2 x 0.5 cm CZT crystals with 2.5 mm pixels (8 x 8 array). The current prototype (Rev1) of our detector crystal unit (DCU) shows ~4.5 keV electronics noise (FWHM), and the radiation measurements show the energy resolution (FWHM) of the units is 4.7 keV (7.9%) at 59.5 keV, 5.6 keV (4.6%) at 122 keV, and 7.6 keV (2.1%) at 356 keV. The new (Rev2) DCU with revised design is expected to improve the resolution by ~30%.", "date": "2006-08-30", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 63190S", "id_number": "CaltechAUTHORS:20180109-110800226", "isbn": "9780819463982", "book_title": "Hard X-Ray and Gamma-Ray Detector Physics and Penetrating Radiation Systems VIII", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180109-110800226", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-5279" }, { "agency": "NASA", "grant_number": "NAG5-5396" }, { "agency": "NASA", "grant_number": "NNG06WC12G" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Franks-L-A", "name": { "family": "Franks", "given": "Larry A." } }, { "id": "Burger-A", "name": { "family": "Burger", "given": "Arnold" } }, { "id": "James-R-B", "name": { "family": "James", "given": "Ralph B." } }, { "id": "Barber-H-B", "name": { "family": "Barber", "given": "H. Bradford" } }, { "id": "Doty-F-P", "name": { "family": "Doty", "given": "F. Patrick" } }, { "id": "Roehrig-H", "name": { "family": "Roehrig", "given": "Hans" } } ] }, "doi": "10.1117/12.680721", "primary_object": { "basename": "63190S.pdf", "url": "https://authors.library.caltech.edu/records/dfb57-dd698/files/63190S.pdf" }, "pub_year": "2006", "author_list": "Hong, J.; Grindlay, J. E.; et el." }, { "id": "https://authors.library.caltech.edu/records/fr7aa-efn86", "eprint_id": 88368, "eprint_status": "archive", "datestamp": "2023-08-19 18:29:23", "lastmod": "2024-01-14 20:31:47", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hong-J", "name": { "family": "Hong", "given": "J." } }, { "id": "Grindlay-J-E", "name": { "family": "Grindlay", "given": "J. E." }, "orcid": "0000-0002-1323-5314" }, { "id": "Chammas-N", "name": { "family": "Chammas", "given": "N." } }, { "id": "Copete-A", "name": { "family": "Copete", "given": "A." } }, { "id": "Baker-R-G", "name": { "family": "Baker", "given": "R. G." } }, { "id": "Barthelmy-S-D", "name": { "family": "Barthelmy", "given": "S. D." } }, { "id": "Gehrels-N", "name": { "family": "Gehrels", "given": "N." } }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. R." } }, { "id": "Burnham-J-A", "name": { "family": "Burnham", "given": "J. A." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "F. A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Collins-J", "name": { "family": "Collins", "given": "J." } }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "W. W." } } ] }, "title": "CZT imaging detectors for ProtoEXIST", "ispublished": "unpub", "full_text_status": "public", "keywords": "CZT detector, hard X-ray telescope, spectral response", "note": "\u00a9 2006 Society of Photo-optical Instrumentation Engineers (SPIE). \n\nThis work is supported in part by NASA grants NAG5-5279, NAG5-5396 and NNG06WC12G. We thank A. Capote at Aguila Technologies for help on IPB packaging.\n\nPublished - 63190S.pdf
", "abstract": "We describe the detector development for a balloon-borne wide-field hard X-ray (20-600 keV) telescope, ProtoEXIST. ProtoEXIST is a pathfinder for both technology and science of the proposed implementation of the Black Hole Finder Probe, Energetic X-ray Imaging Survey telescope (EXIST). The principal technology challenge is the development of large area, close-tiled modules of imaging CZT detectors (1000 cm2 for ProtoEXIST1). We review the updates of the detector design and package concept for ProtoEXIST1 and report the current development status of the CZT detectors, using calibration results of our basic detector unit - 2 x 2 x 0.5 cm CZT crystals with 2.5 mm pixels (8 x 8 array). The current prototype (Rev1) of our detector crystal unit (DCU) shows ~4.5 keV electronics noise (FWHM), and the radiation measurements show the energy resolution (FWHM) of the units is 4.7 keV (7.9%) at 59.5 keV, 5.6 keV (4.6%) at 122 keV, and 7.6 keV (2.1%) at 356 keV. The new (Rev2) DCU with revised design is expected to improve the resolution by ~30%.", "date": "2006-08-30", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 63190S", "id_number": "CaltechAUTHORS:20180731-084238522", "isbn": "9780819463982", "book_title": "Hard X-Ray and Gamma-Ray Detector Physics and Penetrating Radiation", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180731-084238522", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-5279" }, { "agency": "NASA", "grant_number": "NAG5-5396" }, { "agency": "NASA", "grant_number": "NNG06WC12G" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Franks-L-A", "name": { "family": "Franks", "given": "Larry A." } }, { "id": "Burger-A", "name": { "family": "Burger", "given": "Arnold" } }, { "id": "James-R-B", "name": { "family": "James", "given": "Ralph B." } }, { "id": "Barber-H-B", "name": { "family": "Barber", "given": "H. Bradford" } }, { "id": "Doty-F-P", "name": { "family": "Doty", "given": "F. Patrick" } }, { "id": "Roehri-H", "name": { "family": "Roehri", "given": "Hans" } } ] }, "doi": "10.1117/12.680721", "primary_object": { "basename": "63190S.pdf", "url": "https://authors.library.caltech.edu/records/fr7aa-efn86/files/63190S.pdf" }, "pub_year": "2006", "author_list": "Hong, J.; Grindlay, J. E.; et el." }, { "id": "https://authors.library.caltech.edu/records/3txn4-9p855", "eprint_id": 84191, "eprint_status": "archive", "datestamp": "2023-08-19 18:02:05", "lastmod": "2024-01-14 19:16:07", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hayato-Asami", "name": { "family": "Hayato", "given": "Asami" } }, { "id": "Tamagawa-Toru", "name": { "family": "Tamagawa", "given": "Toru" } }, { "id": "Tsunoda-Naoko", "name": { "family": "Tsunoda", "given": "Naoko" } }, { "id": "Hashimoto-Shigehira", "name": { "family": "Hashimoto", "given": "Shigehira" } }, { "id": "Miyamoto-Masao", "name": { "family": "Miyamoto", "given": "Masao" } }, { "id": "Kohama-Mitsuhiro", "name": { "family": "Kohama", "given": "Mitsuhiro" } }, { "id": "Tokanai-Fuyuki", "name": { "family": "Tokanai", "given": "Fuyuki" } }, { "id": "Hamagaki-Hideki", "name": { "family": "Hamagaki", "given": "Hideki" } }, { "id": "Inuzuka-Masahide", "name": { "family": "Inuzuka", "given": "Masahide" } }, { "id": "Miyasaka-Hiromasa", "name": { "family": "Miyasaka", "given": "Hiromasa" }, "orcid": "0000-0002-8074-4186" }, { "id": "Sakurai-Ikuya", "name": { "family": "Sakurai", "given": "Ikuya" } }, { "id": "Makishima-Kazuo", "name": { "family": "Makishima", "given": "Kazuo" } } ] }, "title": "Development of cosmic x-ray polarimeter", "ispublished": "unpub", "full_text_status": "public", "keywords": "X-ray, Polarimeter, Polarization, GEM, Gas Electron Multiplier, Proportional Counter", "note": "\u00a9 2006 SPIE.\n\nPublished - 62663X.pdf
", "abstract": "We present a performance study of a cosmic X-ray polarimeter which is based on the photoelectric effect in gas, and sensitive to a few to 30 keV range. In our polarimeter, the key device would be the 50 \u03bcm pitch Gas Electron Multiplier (GEM). We have evaluated the modulation factor using highly polarized X-ray, provided by a synchrotron accelerator. In the analysis, we selected events by the eccentricity of the charge cloud of the photoelectron track. As a result, we obtained the relationship between the selection criteria for the eccentricity and the modulation factors; for example, when we selected the events which have their eccentricity of > 0.95, the polarimeter exhibited with the modulation factor of 0.32. In addition, we estimated the Minimum Detectable Polarization degree (MDP) of Crab Nebula with our polarimeter and found 10 ksec observation is enough to detect the polarization, if we adopt suitable X-ray mirrors.", "date": "2006-06-15", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 62663X", "id_number": "CaltechAUTHORS:20180109-111622013", "isbn": "9780819463319", "book_title": "Space Telescopes and Instrumentation II: Ultraviolet to Gamma Ray", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180109-111622013", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Turner-M-J-L", "name": { "family": "Turner", "given": "Martin J. L." } }, { "id": "Hasinger-G", "name": { "family": "Hasinger", "given": "G\u00fcnther" } } ] }, "doi": "10.1117/12.671242", "primary_object": { "basename": "62663X.pdf", "url": "https://authors.library.caltech.edu/records/3txn4-9p855/files/62663X.pdf" }, "pub_year": "2006", "author_list": "Hayato, Asami; Tamagawa, Toru; et el." }, { "id": "https://authors.library.caltech.edu/records/6swdt-t3188", "eprint_id": 84195, "eprint_status": "archive", "datestamp": "2023-08-19 18:02:10", "lastmod": "2024-01-14 19:16:09", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Tamagawa-Toru", "name": { "family": "Tamagawa", "given": "Toru" } }, { "id": "Hayato-Asami", "name": { "family": "Hayato", "given": "Asami" } }, { "id": "Yamaguchi-Yorito", "name": { "family": "Yamaguchi", "given": "Yorito" } }, { "id": "Hamagaki-Hideki", "name": { "family": "Hamagaki", "given": "Hideki" } }, { "id": "Hashimoto-Shigehira", "name": { "family": "Hashimoto", "given": "Shigehira" } }, { "id": "Inuzuka-Masahide", "name": { "family": "Inuzuka", "given": "Masahide" } }, { "id": "Miyasaka-Hiromasa", "name": { "family": "Miyasaka", "given": "Hiromasa" }, "orcid": "0000-0002-8074-4186" }, { "id": "Sakurai-Ikuya", "name": { "family": "Sakurai", "given": "Ikuya" } }, { "id": "Tokanai-Fuyuki", "name": { "family": "Tokanai", "given": "Fuyuki" } }, { "id": "Makishima-Kazuo", "name": { "family": "Makishima", "given": "Kazuo" } } ] }, "title": "Fine-pitch and thick-foil gas electron multipliers for cosmic x-ray polarimeters", "ispublished": "unpub", "full_text_status": "public", "keywords": "Cosmic X-ray Polarimeter, gas electron multiplier, GEM, proportional counter", "note": "\u00a9 2006 SPIE.\n\nPublished - 62663W.pdf
", "abstract": "We have produced various gas electron multiplier foils (GEMs) by using laser etching technique for cosmic X-ray polarimeters. The finest structure GEM we have fabricated has 30 \u03bcm-diameter holes on a 50 \u03bcm-pitch. The effective gain of the GEM reaches around 5000 at the voltage of 570 V between electrodes. The gain is slightly higher than that of the CERN standard GEM with 70 \u03bcm-diameter holes on a 140 \u03bcm-pitch. We have fabricated GEMs with thickness of 100 \u03bcm which has two times thicker than the standard GEM. The effective gain of the thick-foil GEM is 104 at the applied voltage of 350 V per 50 \u03bcm of thickness. The gain is about two orders higher than that of the standard GEM. The remarkable characteristic of the thick-foil GEM is that the effective gain at the beginning of micro-discharge is quite improved. For fabricating the thick-foil GEMs, we have employed new material, liquid crystal polymer (LCP) which has little moisture absorption rate, as an insulator layer instead of polyimide. One of the thick-foil GEM we have fabricated has 8 \u03bcm copper layer in the middle of the 100 \u03bcm-thick insulator layer. The metal layer in the middle of the foil works as a field-shaper in the multiplication channels, though it slightly decreases the effective gain.", "date": "2006-06-15", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 62663W", "id_number": "CaltechAUTHORS:20180109-133536420", "isbn": "9780819463319", "book_title": "Space Telescopes and Instrumentation II: Ultraviolet to Gamma Ray", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180109-133536420", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Turner-M-J-L", "name": { "family": "Turner", "given": "Martin J. L." } }, { "id": "Hasinger-G", "name": { "family": "Hasinger", "given": "G\u00fcnther" } } ] }, "doi": "10.1117/12.671244", "primary_object": { "basename": "62663W.pdf", "url": "https://authors.library.caltech.edu/records/6swdt-t3188/files/62663W.pdf" }, "pub_year": "2006", "author_list": "Tamagawa, Toru; Hayato, Asami; et el." }, { "id": "https://authors.library.caltech.edu/records/eye3b-e7b91", "eprint_id": 84185, "eprint_status": "archive", "datestamp": "2023-08-19 18:01:24", "lastmod": "2024-01-14 19:15:55", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "F. E." }, "orcid": "0000-0001-5679-1946" }, { "id": "Jensen-C-P", "name": { "family": "Jensen", "given": "C. P." } }, { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "K. K." }, "orcid": "0000-0003-1252-4891" }, { "id": "Pivovaroff-M-J", "name": { "family": "Pivovaroff", "given": "M. J." } }, { "id": "Chen-H", "name": { "family": "Chen", "given": "H." } }, { "id": "Dariel-A", "name": { "family": "Dariel", "given": "A." } }, { "id": "H\u00f8gh\u00f8j-P", "name": { "family": "H\u00f8gh\u00f8j", "given": "P." } } ] }, "title": "Novel multilayer designs for future hard x-ray missions", "ispublished": "unpub", "full_text_status": "public", "keywords": "X-ray multilayers, Hard X-ray Astronomy, X-ray optics", "note": "\u00a9 2006 SPIE.\n\nPublished - 626611.pdf
", "abstract": "Current multilayer designs for 10-80 keV hard X-ray telescope missions have focused primarily on the proven properties of W and Pt based multilayer coatings. Recently a number of new material combinations and coating capabilities have emerged which allows for more elaborate designs that can further extend the energy band of current mission designs as well as avoid some of the unwanted absorption edge effects in the effective area near potentially important line emission energies. These new design possibilities are investigated for current hard X-ray mission designs. The new material combinations to be considered are recently proven capabilities of enhanced NiV/C coatings and NiV/SiC coatings in conjuction with the well-established W based coatings.", "date": "2006-06-13", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 626611", "id_number": "CaltechAUTHORS:20180109-095646723", "isbn": "9780819463319", "book_title": "Space Telescopes and Instrumentation II: Ultraviolet to Gamma Ray", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180109-095646723", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Turner-M-J-L", "name": { "family": "Turner", "given": "Martin J. L." } }, { "id": "Hasinger-G", "name": { "family": "Hasinger", "given": "G\u00fcnther" } } ] }, "doi": "10.1117/12.673181", "primary_object": { "basename": "626611.pdf", "url": "https://authors.library.caltech.edu/records/eye3b-e7b91/files/626611.pdf" }, "pub_year": "2006", "author_list": "Christensen, F. E.; Jensen, C. P.; et el." }, { "id": "https://authors.library.caltech.edu/records/wz96n-gh532", "eprint_id": 99650, "eprint_status": "archive", "datestamp": "2023-08-19 18:01:29", "lastmod": "2024-01-14 22:01:13", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Lumb-D-H", "name": { "family": "Lumb", "given": "D. H." } }, { "id": "Bavdaz-M", "name": { "family": "Bavdaz", "given": "M." } }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "F. E." }, "orcid": "0000-0001-5679-1946" }, { "id": "Dariel-A", "name": { "family": "Dariel", "given": "A." } }, { "id": "Hoghoj-P", "name": { "family": "Hoghoj", "given": "P." } }, { "id": "Jensen-C-P", "name": { "family": "Jensen", "given": "C. P." } }, { "id": "Krumrey-M", "name": { "family": "Krumrey", "given": "M." } }, { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "K. K." }, "orcid": "0000-0003-1252-4891" }, { "id": "Ziegler-E", "name": { "family": "Ziegler", "given": "E." } }, { "id": "Albertin-B", "name": { "family": "Albertin", "given": "B." } }, { "id": "Hedacq-S", "name": { "family": "Hedacq", "given": "S." } }, { "id": "Collon-M", "name": { "family": "Collon", "given": "M." } }, { "id": "Buis-E-J", "name": { "family": "Buis", "given": "E.-J." } } ] }, "title": "Multi-layer coating development for XEUS", "ispublished": "unpub", "full_text_status": "public", "keywords": "X-ray astronomy, X-ray optics, telescopes, coatings", "note": "\u00a9 2006 Society of Photo-Optical Instrumentation Engineers (SPIE).\n\nPublished - 626614.pdf
", "abstract": "Graded depth multi-layer coatings have the potential to optimise the performance of X-ray reflective surfaces for improved energy response. A study of deposition techniques on silicon substrates representative of the XEUS High Performance Pore Optics (HPO) technology has been carried out. Measurements at synchrotron radiation facilities have been used to confirm the excellent performance improvements achievable with Mo/Si and W/Si multilayers. Future activities that will be necessary to implement such coatings in the HPO assembly sequence are highlighted. Further coating developments that may allow an optimisation of the XEUS effective area in light of potential changes to science requirements and telescope configurations are also identified. Finally an initial measurement of effects of radiation damage within the multilayers is reported.", "date": "2006-06-13", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers (SPIE)", "id_number": "CaltechAUTHORS:20191104-104917843", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20191104-104917843", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Turner-M-J-L", "name": { "family": "Turner", "given": "Martin J. L." } }, { "id": "Hasinger-G", "name": { "family": "Hasinger", "given": "G\u00fcnther" } } ] }, "doi": "10.1117/12.669946", "primary_object": { "basename": "626614.pdf", "url": "https://authors.library.caltech.edu/records/wz96n-gh532/files/626614.pdf" }, "pub_year": "2006", "author_list": "Lumb, D. H.; Bavdaz, M.; et el." }, { "id": "https://authors.library.caltech.edu/records/srdny-ctv02", "eprint_id": 99652, "eprint_status": "archive", "datestamp": "2023-08-19 18:01:34", "lastmod": "2024-01-14 22:01:15", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Jensen-C-P", "name": { "family": "Jensen", "given": "C. P." } }, { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "K. K." }, "orcid": "0000-0003-1252-4891" }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "F. E." }, "orcid": "0000-0001-5679-1946" } ] }, "title": "Investigation of new material combinations for hard x-ray telescope designs", "ispublished": "unpub", "full_text_status": "public", "keywords": "Hard X-ray multilayer, stacked multilayer", "note": "\u00a9 2006 Society of Photo-Optical Instrumentation Engineers (SPIE).\n\nPublished - 626612.pdf
", "abstract": "The materials chosen for depth graded multilayer designs for hard x-ray telescopes (10 keV to 80 keV) have until now been focusing on W/Si, W/SiC, Pt/C, and Pt/SiC. These material combinations have been chosen because of good stability over time and low interface roughness, However both W and Pt have absorption edges in the interesting energy range from 70 - 80 keV. If looking at the optical constants Cu and Ni would be good alternative high-Z candidates since the k-absorption edges in Cu and Ni is below 10 keV. We have investigated both of these materials as the reflecting layer in combination with SiC as the spacer layer and give the performance in terms of roughness, minimum obtainable d-spacing and stability over time as deposited in our planar magnetron sputtering facility. Likewise we review the same properties of WC/SiC coatings which we have previously developed and which allow for very small d-spacings. The combination of WC/SiC or the well established W/SiC with the above mentioned Cu and Ni-containing multilayers in the same stack allows for novel telescope designs operating up to and above 100 keV without the absorption edge structure.", "date": "2006-06-13", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers (SPIE)", "id_number": "CaltechAUTHORS:20191104-124306302", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20191104-124306302", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Turner-M-J-L", "name": { "family": "Turner", "given": "Martin J. L." } }, { "id": "Hasinger-G", "name": { "family": "Hasinger", "given": "G\u00fcnther" } } ] }, "doi": "10.1117/12.673180", "primary_object": { "basename": "626612.pdf", "url": "https://authors.library.caltech.edu/records/srdny-ctv02/files/626612.pdf" }, "pub_year": "2006", "author_list": "Jensen, C. P.; Madsen, K. K.; et el." }, { "id": "https://authors.library.caltech.edu/records/zvypk-adp10", "eprint_id": 56020, "eprint_status": "archive", "datestamp": "2023-08-19 17:05:51", "lastmod": "2024-01-13 16:17:03", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Gopalswamy-N", "name": { "family": "Gopalswamy", "given": "N." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Torsti-J", "name": { "family": "Torsti", "given": "J." } } ] }, "title": "Solar Eruptions and Energetic Particles: An Introduction", "ispublished": "unpub", "full_text_status": "public", "note": "This paper is not subject to U.S. copyright. Published in 2006 by \u00b7the American Geophysical Union.\n\nPublished - 2006-10.pdf
", "abstract": "This introductory article highlights current issues concerning two related\nphenomena involving mass emission from the Sun: solar eruptions and solar\nenergetic particles. A brief outline of the chapters is provided indicating how the current issues are addressed in the monograph. The sections in this introduction roughly group the chapters dealing with coronal mass ejections (CMEs), solar energetic particles (SEPs), shocks, and space weather. The concluding remarks include a brief summary of outstanding issues that drive current and future research on CMEs and SEPs.", "date": "2006", "date_type": "published", "publisher": "American Geophysical Union", "place_of_pub": "Washington, DC", "pagerange": "1-5", "id_number": "CaltechAUTHORS:20150324-111105186", "isbn": "9780875904306", "book_title": "Solar Eruptions and Energetic Particles", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150324-111105186", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "2006-10", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Gopalswamy-N", "name": { "family": "Gopalswamy", "given": "N." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "Richard" } }, { "id": "Torsti-J", "name": { "family": "Torsti", "given": "Jarmo" } } ] }, "doi": "10.1029/165GM02", "primary_object": { "basename": "2006-10.pdf", "url": "https://authors.library.caltech.edu/records/zvypk-adp10/files/2006-10.pdf" }, "pub_year": "2006", "author_list": "Gopalswamy, N.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/8pnqd-9vh26", "eprint_id": 56009, "eprint_status": "archive", "datestamp": "2023-08-19 17:05:47", "lastmod": "2024-01-13 16:17:01", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" } ] }, "title": "The Source Material for Large Solar Energetic Particle Events", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2006 American Geophysical Union. \n\nThis work was supported by NASA under grants NNG04GB55G, NNG04088G, and NAG5-12929. We appreciate discussions with Berndt Klecker, Eberhard Moebius, and Edward Stone, and figures provided by Berndt Klecker, Allan Labrador, Mark\nPopecki, and Mark Wiedenbeck. We thank the local organizing committee for a very informative and enjoyable conference.\n\nPublished - 2006-03.pdf
", "abstract": "We review evidence regarding the origin of material accelerated in large, gradual solar energetic particle (SEP) events. According to the two-class paradigm in place at the start of solar cycle 23, impulsive SEP events accelerate heated flare material, while gradual SEP events are accelerated out of the solar wind by shocks driven by fast coronal mass ejections (CMEs). However, new data from solar cycle 23 has shown that the energetic ions in gradual events often include composition signatures associated with impulsive events, including enrichments in ^3He, heavy elements such as Fe, and ionic charge states indicative of~ 10 MK temperatures. In addition, gradual SEP events differ in composition from bulk solar wind in several key respects, implying that solar wind is not the principal seed population for these events. Several lines of evidence show that CME-driven shocks accelerate principally suprathennal ions with velocities several times that of the solar wind. The suprathermal pool incorporates ions from impulsive solar flares and previous gradual events, CIR events, pickup ions, CME ejecta, and the suprathermal tail of the solar wind. This paper reviews evidence for the sources of ions accelerated in gradual SEP events, considers the composition and available densities of suprathermal ions, and describes models that attempt to account for the surprisingly variable composition of gradual SEP events. We find that below ~1 MeV/nucleon almost all events are Fe-rich compared to the average 5 to 12 MeV/nucleon SEP composition. Iron-rich SEP events above 10 Me V/nucleon occur mainly during periods when the intensity of suprathermal iron in the inner heliosphere is high, due mainly to previous gradual events.", "date": "2006", "date_type": "published", "publisher": "American Geophysical Union", "place_of_pub": "Washington, DC", "pagerange": "115-125", "id_number": "CaltechAUTHORS:20150324-092218323", "isbn": "9780875904306", "book_title": "Solar Eruptions and Energetic Particles", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150324-092218323", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG04GB55G" }, { "agency": "NASA", "grant_number": "NNG04088G" }, { "agency": "NASA", "grant_number": "NAG5-12929" } ] }, "other_numbering_system": { "items": [ { "id": "2006-03", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Gopalswamy-N", "name": { "family": "Gopalswamy", "given": "N." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "Richard" } }, { "id": "Torsti-J", "name": { "family": "Torsti", "given": "Jarmo" } } ] }, "doi": "10.1029/165GM12", "primary_object": { "basename": "2006-03.pdf", "url": "https://authors.library.caltech.edu/records/8pnqd-9vh26/files/2006-03.pdf" }, "pub_year": "2006", "author_list": "Mewaldt, R. A.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/js710-njz02", "eprint_id": 84201, "eprint_status": "archive", "datestamp": "2023-08-19 16:21:42", "lastmod": "2024-01-14 19:16:17", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Koglin-J-E", "name": { "family": "Koglin", "given": "Jason E." } }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "Finn E." }, "orcid": "0000-0001-5679-1946" }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "William W." } }, { "id": "Decker-T-R", "name": { "family": "Decker", "given": "Todd R." } }, { "id": "Hailey-C-J", "name": { "family": "Hailey", "given": "Charles J." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Hawthorn-C", "name": { "family": "Hawthorn", "given": "Colin" } }, { "id": "Jensen-C-P", "name": { "family": "Jensen", "given": "Carsten P." } }, { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "Kristin K." }, "orcid": "0000-0003-1252-4891" }, { "id": "Stern-M", "name": { "family": "Stern", "given": "Marcela" } }, { "id": "Tajiri-Gordon", "name": { "family": "Tajiri", "given": "Gordon" } }, { "id": "Taylor-M-D", "name": { "family": "Taylor", "given": "Michael D." } } ] }, "title": "NuSTAR hard x-ray optics", "ispublished": "unpub", "full_text_status": "public", "keywords": "Hard X-ray telescope, X-ray optics, segmented glass, thermally-slumped, HEFT, NuSTAR", "note": "\u00a9 2005 SPIE. \n\nThis work is supported by a NASA grant to Columbia University: NAG5-5260 (Thermally Formed Optics for X-Ray and Gamma-Ray Astronomy), and by NASA grants to the California Institute of Technology with sub-awards to Columbia: Caltech No. 1019776 (High Energy Focusing Telescope) and Caltech No. 1046806 (Critical Technologies for the Constellation Hard X-Ray Telescope).\n\nPublished - 59000X.pdf
", "abstract": "The Nuclear Spectroscopic Telescope Array (NuSTAR) is a small explorer (SMEX) mission currently under an extended Phase A study by NASA. NuSTAR will be the first satellite mission to employ focusing optics in the hard X-ray band (8-80 keV). Its design eliminates high detector backgrounds, allows true imaging, and permits the use of compact high performance detectors. The result: a combination of clarity, sensitivity, and spectral resolution surpassing the largest observatories that have operated in this band by orders of magnitude. We present an overview of the NuSTAR optics design and production process. We also describe the progress of several components of our independent optics development program that are beginning to reach maturity and could possibly be incorporated into the NuSTAR production scheme. We then present environmental test results that are being conducted in preparation of full space qualification of the NuSTAR optics.", "date": "2005-09-01", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "id_number": "CaltechAUTHORS:20180109-151648556", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180109-151648556", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-5260" }, { "agency": "NASA", "grant_number": "1019776" }, { "agency": "NASA", "grant_number": "1046806" } ] }, "local_group": { "items": [ { "id": "NuSTAR" }, { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Citterio-O", "name": { "family": "Citterio", "given": "Oberto" } }, { "id": "O'Dell-S-L", "name": { "family": "O'Dell", "given": "Stephen L." } } ] }, "doi": "10.1117/12.618601", "primary_object": { "basename": "59000X.pdf", "url": "https://authors.library.caltech.edu/records/js710-njz02/files/59000X.pdf" }, "pub_year": "2005", "author_list": "Koglin, Jason E.; Christensen, Finn E.; et el." }, { "id": "https://authors.library.caltech.edu/records/rgjfy-wd606", "eprint_id": 99649, "eprint_status": "archive", "datestamp": "2023-08-19 16:21:46", "lastmod": "2024-01-14 22:01:11", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Jensen-C-P", "name": { "family": "Jensen", "given": "C. P." } }, { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "K. K." }, "orcid": "0000-0003-1252-4891" }, { "id": "Jensen-A", "name": { "family": "Jensen", "given": "A." } }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "F. E." }, "orcid": "0000-0001-5679-1946" } ] }, "title": "W/SiC and Pt/SiC multilayers for the NuSTAR hard x-ray telescope", "ispublished": "unpub", "full_text_status": "public", "keywords": "NuSTAR. hard X-ray telescope, multilayer coating", "note": "\u00a9 2005 Society of Photo-Optical Instrumentation Engineers (SPIE).\n\nPublished - 590007.pdf
", "abstract": "This paper will discuss the coatings for the Nuclear Spectroscopic Telescope Array (NuSTAR) and describe the updates of the coating facility at the Danish National Space Center, necessary to make all the coatings in the required time frame. The inner part of the three NuSTAR telescopes will be coated with Pt/SiC and the outer part with W/SiC. To understand the roughness of the flight coatings, we will present results from 10 bilayer constant d-spacing coatings for both types of flight coatings. Also, data showing the homogeneity over the octant mirror segments as well as X-ray data from realistic depth graded coatings will be presented. The long time stability and stress in the coatings will be discussed.", "date": "2005-09-01", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers (SPIE)", "id_number": "CaltechAUTHORS:20191104-103935621", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20191104-103935621", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "NuSTAR" }, { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Citterio-O", "name": { "family": "Citterio", "given": "Oberto" } }, { "id": "O'Dell-S-L", "name": { "family": "O'Dell", "given": "Stephen L." } } ] }, "doi": "10.1117/12.620947", "primary_object": { "basename": "590007.pdf", "url": "https://authors.library.caltech.edu/records/rgjfy-wd606/files/590007.pdf" }, "pub_year": "2005", "author_list": "Jensen, C. P.; Madsen, K. K.; et el." }, { "id": "https://authors.library.caltech.edu/records/9d11s-sqq36", "eprint_id": 84204, "eprint_status": "archive", "datestamp": "2023-08-19 16:14:12", "lastmod": "2024-01-14 19:16:20", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hong-J", "name": { "family": "Hong", "given": "J." } }, { "id": "Copete-A", "name": { "family": "Copete", "given": "A." } }, { "id": "Grindlay-J-E", "name": { "family": "Grindlay", "given": "J. E." }, "orcid": "0000-0002-1323-5314" }, { "id": "Vadawale-S-V", "name": { "family": "Vadawale", "given": "S. V." } }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "W. W." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "F." }, "orcid": "0000-0003-2992-8024" }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. R." } }, { "id": "Gehrels-N", "name": { "family": "Gehrels", "given": "N." } } ] }, "title": "Detector and telescope development for ProtoEXIST and fine beam measurements of spectral response of CZT detectors", "ispublished": "unpub", "full_text_status": "public", "keywords": "CZT detector, hard X-ray telescope, spectral response", "note": "\u00a9 2005 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nThis work is supported in part by NASA grant NAG5-5279 and NAG5-5396.\n\nPublished - 58980N.pdf
", "abstract": "We outline our plan to develop ProtoEXIST, a balloon-borne prototype experiment for the Energetic X-ray Imaging Survey Telescope (EXIST) for the Black Hole Finder Probe. EXIST will consist of multiple wide-field hard X-ray coded-aperture telescopes. The current design of the EXIST mission employs two types of telescope systems: high energy telescopes (HETs) using CZT detectors, and low energy telescopes (LETs) using Si detectors. With ProtoEXIST, we will develop and demonstrate the technologies required for the EXIST HETs. As part of our development efforts, we also present recent laboratory measurements of the spectral response and efficiency variation of imaging CZT detectors on a fine scale (~0.5 mm). The preliminary results confirm the need for multi-pixel readouts and small inter-pixel gaps to achieve uniform spectral response and high detection efficiency across detectors.", "date": "2005-08-18", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "id_number": "CaltechAUTHORS:20180109-153135238", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180109-153135238", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-5279" }, { "agency": "NASA", "grant_number": "NAG5-5396" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Siegmund-O-H-W", "name": { "family": "Siegmund", "given": "Oswald H. W." } } ] }, "doi": "10.1117/12.617630", "primary_object": { "basename": "58980N.pdf", "url": "https://authors.library.caltech.edu/records/9d11s-sqq36/files/58980N.pdf" }, "pub_year": "2005", "author_list": "Hong, J.; Copete, A.; et el." }, { "id": "https://authors.library.caltech.edu/records/6hw17-tsh44", "eprint_id": 24963, "eprint_status": "archive", "datestamp": "2023-08-23 16:48:21", "lastmod": "2024-01-13 05:20:43", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "McDonald-F-B", "name": { "family": "McDonald", "given": "Frank B." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "Edward C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Burlaga-L-F", "name": { "family": "Burlaga", "given": "Leonard F." }, "orcid": "0000-0002-5569-1553" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "Alan C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Heikkila-B-C", "name": { "family": "Heikkila", "given": "Bryant C." } }, { "id": "Lal-Nand", "name": { "family": "Lal", "given": "Nand" } }, { "id": "Ness-N-F", "name": { "family": "Ness", "given": "Norman F." } }, { "id": "Richardson-J-D", "name": { "family": "Richardson", "given": "John D." }, "orcid": "0000-0003-4041-7540" }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "William R." } } ] }, "title": "Observations of Energetic Ions and Electrons in the Distant Heliosphere: 2001 \u2013 2005.0", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar wind, solar cosmic ray particles, shock waves, interplanetary matter", "note": "\u00a9 2005 American Institute of Physics.\nIssue Date: 1 August 2005.\n\nPublished - MCDaipcp05.pdf
", "abstract": "As Voyager 1 (V1) moves closer to the heliospheric termination shock (TS), a new energetic particle population is observed: Termination Shock Particle events (TSP). Interplanetary disturbances in the form of merged interaction regions (MIRs) \u2014 identified using Voyager 2 (V2) data \u2014 have a major effect on the V1 TSP events from their onset to termination along with triggering episodic increases in higher energy ions (35 MeV H) and MeV electrons. The nature of these interactions appear to evolve as V1 moves closer to the TS.", "date": "2005-08-01", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "261-266", "id_number": "CaltechAUTHORS:20110822-080338809", "isbn": "0-7354-0268-X", "book_title": "The physics of collisionless shocks", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110822-080338809", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "2005-35", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Li-Gang", "name": { "family": "Li", "given": "G." } }, { "id": "Zank-G-P", "name": { "family": "Zank", "given": "G. P." } }, { "id": "Russell-C-T", "name": { "family": "Russell", "given": "C. T." } } ] }, "doi": "10.1063/1.2032706", "primary_object": { "basename": "MCDaipcp05.pdf", "url": "https://authors.library.caltech.edu/records/6hw17-tsh44/files/MCDaipcp05.pdf" }, "pub_year": "2005", "author_list": "McDonald, Frank B.; Stone, Edward C.; et el." }, { "id": "https://authors.library.caltech.edu/records/p8g9y-hq698", "eprint_id": 25084, "eprint_status": "archive", "datestamp": "2023-08-19 16:11:58", "lastmod": "2024-01-13 05:22:40", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Looper-M-L", "name": { "family": "Looper", "given": "M. L." } }, { "id": "Haggerty-D-E", "name": { "family": "Haggerty", "given": "D. E." } }, { "id": "Maclennan-C-G", "name": { "family": "Maclennan", "given": "C. G." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Desai-M-I", "name": { "family": "Desai", "given": "M. I." }, "orcid": "0000-0002-7318-6008" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Li-Gang", "name": { "family": "Li", "given": "G." }, "orcid": "0000-0001-9313-251X" }, { "id": "Mazur-J-E", "name": { "family": "Mazur", "given": "J. E." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Solar Energetic Particle Spectral Breaks", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar cosmic ray particles, cosmic ray energy spectra, shock waves, acceleration", "note": "\u00a9 2005 American Institute of Physics. Issue Date: 1 August 2005. This work was supported by NASA under grants NNG04GB55G, NNG04088G, and NAG5-12929. We appreciate the availability of GOES-11 data from NOAA's Space Environment Center at http://www.sec.noaa.gov/Data/index.html.\n\nPublished - MEWaipcp05.pdf
", "abstract": "The five large solar particle events during October\u2013November 2003 presented an opportunity to test shock acceleration models with in-situ observations. We use solar particle spectra of H to Fe ions, measured by instruments on ACE, SAMPEX, and GOES-11, to investigate the Q/M-dependence of spectral breaks in the 28 October 2003 event. We find that the break energies scale as (Q/M)^b with b \u2248 1.56 to 1.75, somewhat less than predicted. We also conclude that SEP spectra >100 MeV/nucleon are best fit by a double power-law shape. \u00a92005 American Institute of Physics", "date": "2005-08-01", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "227-232", "id_number": "CaltechAUTHORS:20110825-074422914", "isbn": "0-7354-0268-X", "book_title": "Physics of Collisionless Shocks", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110825-074422914", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG04GB55G" }, { "agency": "NASA", "grant_number": "NNG04088G" }, { "agency": "NASA", "grant_number": "NAG5-12929" } ] }, "other_numbering_system": { "items": [ { "id": "2005-03", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Li-Gang", "name": { "family": "Li", "given": "G." } }, { "id": "Zank-G-P", "name": { "family": "Zank", "given": "G. P." } }, { "id": "Russell-C-T", "name": { "family": "Russell", "given": "C. T." } } ] }, "doi": "10.1063/1.2032701", "primary_object": { "basename": "MEWaipcp05.pdf", "url": "https://authors.library.caltech.edu/records/p8g9y-hq698/files/MEWaipcp05.pdf" }, "pub_year": "2005", "author_list": "Mewaldt, R. A.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/jg03k-ckt17", "eprint_id": 15946, "eprint_status": "archive", "datestamp": "2023-08-22 04:02:18", "lastmod": "2024-01-12 23:37:58", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Characteristics of the Termination Shock: Insights from Voyager", "ispublished": "unpub", "full_text_status": "public", "keywords": "shock waves; solar wind; cosmic ray energy spectra; interplanetary magnetic fields; space vehicles; space research", "note": "\u00a92005 American Institute of Physics. \n\nIssue Date: 1 August 2005. \n\nThis work was supported by NASA under contract NAS7-03001. \n\n# 96.50.Fm\nInterplanetary shock waves\n# 96.60.Vg\nSolar particle radiation, solar wind, and solar neutrinos\n# 96.40.De\nCosmic ray composition, energy spectra, and interactions\n# 96.50.Bh\nSolar and interplanetary electric and magnetic fields (including solar wind fields)\n# 07.87.+v\nSpaceborne and space research instruments, apparatus, and components (satellites, space vehicles, etc.)\n\nPublished - CUMaipcp05.pdf
", "abstract": "We examine the energy spectra obtained from the cosmic ray instrument on the Voyager 1 spacecraft during 2002/215 through 2005/60. We find that the energy spectra of protons below ~20 MeV often resemble two power laws with a relatively hard index at low energies and a softer index at higher energies. The point of intersection of the two power laws is ~3 MeV. Beginning in 2005, the low-energy index is typically \u20131.5, corresponding to a shock strength (compression ratio) of 2.5. We attribute these characteristics to a restricted region of the solar wind termination shock that is sporadically connected to the Voyager 1 spacecraft by the interplanetary magnetic field. The absence of significant spectral variability in 2005 suggests that Voyager 1 entered a region with minimal spatial gradients of the lowest energy ions.", "date": "2005-08-01", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "273-277", "id_number": "CaltechAUTHORS:20090918-084737847", "isbn": "073540268X", "book_title": "The Physics of Collisionless Shocks: 4th Annual IGPP International Astrophysics Conference", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20090918-084737847", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-03001" } ] }, "other_numbering_system": { "items": [ { "id": "2005-31", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Li-Gang", "name": { "family": "Li", "given": "Gang" } }, { "id": "Zank-G-P", "name": { "family": "Zank", "given": "Gary P." } }, { "id": "Russell-C-T", "name": { "family": "Russell", "given": "C. T." } } ] }, "doi": "10.1063/1.2032708", "primary_object": { "basename": "CUMaipcp05.pdf", "url": "https://authors.library.caltech.edu/records/jg03k-ckt17/files/CUMaipcp05.pdf" }, "pub_year": "2005", "author_list": "Cummings, A. C. and Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/5byr9-cq882", "eprint_id": 56519, "eprint_status": "archive", "datestamp": "2023-08-19 16:09:46", "lastmod": "2023-10-23 15:31:15", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "de-Nolfo-Georgia-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Binns-Walter-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Cummings-Jay-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "Geier-Stephan", "name": { "family": "Geier", "given": "S." }, "orcid": "0000-0002-3948-9339" }, { "id": "Israel-Martin-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Link-J-T", "name": { "family": "Link", "given": "J. T." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Rauch-Brian-F", "name": { "family": "Rauch", "given": "B. F." }, "orcid": "0000-0002-1452-4142" }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Scott-L-M", "name": { "family": "Scott", "given": "L. M." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } } ] }, "title": "Co/Ni Ratio Between 0.8-5 GeV/nucleon from TIGER-2001", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright TATA Institute of Fundamental Research. \n\nThis research was supported by the National Aeronautics and Space Administration under grant NAGS-5078.\n\nPublished - 2005-28.pdf
", "abstract": "The 2001 flight of TIGER lasted 31.8 days and collected sufficient statistics to study the Co/Ni elemental ratio\nover a wide range in energies. We present the elemental ratio of Co/Ni in galactic cosmic rays between ~0.80-5 GeV /nucleon and compare our results with previous measurements and propagation models.", "date": "2005-08", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20150409-095418460", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150409-095418460", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGS-5078" } ] }, "other_numbering_system": { "items": [ { "id": "2005-28", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Acharya-B", "name": { "family": "Acharya", "given": "B." } }, { "id": "Gupta-S", "name": { "family": "Gupta", "given": "S." } }, { "id": "Jain-Atul", "name": { "family": "Jain", "given": "Atul" } }, { "id": "Karthikeyan-S", "name": { "family": "Karthikeyan", "given": "S." } }, { "id": "Morris-S", "name": { "family": "Morris", "given": "S." } }, { "id": "Tonwar-S", "name": { "family": "Tonwar", "given": "S." } } ] }, "primary_object": { "basename": "2005-28.pdf", "url": "https://authors.library.caltech.edu/records/5byr9-cq882/files/2005-28.pdf" }, "pub_year": "2005", "author_list": "de Nolfo, G. A.; Barbier, L. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/44vr5-exw33", "eprint_id": 56274, "eprint_status": "archive", "datestamp": "2023-08-19 15:06:53", "lastmod": "2023-10-23 15:15:49", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Zhang-J-L", "name": { "family": "Zhang", "given": "J. L." } }, { "id": "Tan-Y-H", "name": { "family": "Tan", "given": "Y. H." } }, { "id": "Lu-H", "name": { "family": "Lu", "given": "H." } }, { "id": "Wang-H", "name": { "family": "Wang", "given": "H." } }, { "id": "Tsuchiya-H", "name": { "family": "Tsuchiya", "given": "H." } }, { "id": "Matsuoka-M", "name": { "family": "Matsuoka", "given": "M." } }, { "id": "Yamada-Y", "name": { "family": "Yamada", "given": "Y." } }, { "id": "Yuda-T", "name": { "family": "Yuda", "given": "T." } }, { "id": "Muraki-Y", "name": { "family": "Muraki", "given": "Y." } }, { "id": "Miyasaka-Hiromasa", "name": { "family": "Miyasaka", "given": "H." }, "orcid": "0000-0002-8074-4186" } ] }, "title": "Search for the solar neutrons using the Yangbajing neutron monitor and the neutron telescope during the 23rd solar cycle", "ispublished": "unpub", "full_text_status": "public", "note": "Published - 2005-32.pdf
", "abstract": "The geographical location of Yangbajing (latitude 30, 4300m above sea level) has advantages for the direct\ndetection of the solar are neutron events. The Yangbajing neutron monitor and neutron telescope were established\nin 1998 October at Yangbajing under the China-Japan cooperation and be used for the observation\nof solar neutron events during the 23th solar cycle. On 28 November 1998 the Yangbajing neutron monitor\nrecorded a 3.8 sigma excess that has time coincidence with the reported neutron event of the Yangbajing neutron\ntelescope. The response of Yangbajing neutron monitor and neutron telescope on the solar particle event\nassociated with theX17.2 class are at October 28, 2003 was researched too.", "date": "2005", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20150401-095718304", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150401-095718304", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "2005-32", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Acharya-B", "name": { "family": "Acharya", "given": "B." } }, { "id": "Gupta-S", "name": { "family": "Gupta", "given": "S." } }, { "id": "Jain-A", "name": { "family": "Jain", "given": "Atul" } }, { "id": "Karthikeyan-S", "name": { "family": "Karthikeyan", "given": "S." } }, { "id": "Morris-S", "name": { "family": "Morris", "given": "S." } }, { "id": "Tonwar-S", "name": { "family": "Tonwar", "given": "S." } } ] }, "primary_object": { "basename": "2005-32.pdf", "url": "https://authors.library.caltech.edu/records/44vr5-exw33/files/2005-32.pdf" }, "pub_year": "2005", "author_list": "Zhang, J. L.; Tan, Y. H.; et el." }, { "id": "https://authors.library.caltech.edu/records/kzkxf-3jv31", "eprint_id": 56517, "eprint_status": "archive", "datestamp": "2023-08-19 15:07:46", "lastmod": "2023-10-23 15:31:09", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "McDonald-F-B", "name": { "family": "McDonald", "given": "F. B." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Heikkila-B-C", "name": { "family": "Heikkila", "given": "B. C." } }, { "id": "Lal-N", "name": { "family": "Lal", "given": "N." } }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "Voyager 1 Observations of Termination Shock Particle Events \u2013 The Effect of Interplanetary Transients", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright TATA Institute of Fundamental Research.\n\nPublished - 2005-27.pdf
", "abstract": "The increases in MeV ions and electrons, observed by the Voyager 1 CRS experiment as it moved beyond\n85 AU, have persisted over most of the ensuing 3 year period and represents a new particle population in the\ndistant heliosphere - Termination Shock Particle (TSP) events. The properties of these TSP events are\nstrongly influenced by the passage of interplanetary transients.", "date": "2005", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20150409-094600102", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150409-094600102", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "2005-27", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Acharya-B", "name": { "family": "Acharya", "given": "B." } }, { "id": "Gupta-S", "name": { "family": "Gupta", "given": "S." } }, { "id": "Jain-A", "name": { "family": "Jain", "given": "Atul" } }, { "id": "Karthikeyan-S", "name": { "family": "Karthikeyan", "given": "S." } }, { "id": "Morris-S", "name": { "family": "Morris", "given": "S." } }, { "id": "Tonwar-S", "name": { "family": "Tonwar", "given": "S." } } ] }, "primary_object": { "basename": "2005-27.pdf", "url": "https://authors.library.caltech.edu/records/kzkxf-3jv31/files/2005-27.pdf" }, "pub_year": "2005", "author_list": "McDonald, F. B.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/tzq5m-5s364", "eprint_id": 56404, "eprint_status": "archive", "datestamp": "2023-08-19 15:07:11", "lastmod": "2023-10-23 15:22:36", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Dwyer-J-R", "name": { "family": "Dwyer", "given": "J. R." } }, { "id": "Gold-R-E", "name": { "family": "Gold", "given": "R. E." } }, { "id": "Krimigis-S-M", "name": { "family": "Krimigis", "given": "S. M." }, "orcid": "0000-0003-2781-2386" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mazur-J-E", "name": { "family": "Mazur", "given": "J. E." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "The Time Variation of Energetic ^3He in Interplanetary Space from 1997-2005", "ispublished": "unpub", "full_text_status": "public", "note": "This work was supported by NASA under grant NAG5-6912.\n\nPublished - 2005-15.pdf
", "date": "2005", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20150406-161740226", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150406-161740226", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "2005-15", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Acharya-B", "name": { "family": "Acharya", "given": "B." } }, { "id": "Gupta-S", "name": { "family": "Gupta", "given": "S." } }, { "id": "Jain-A", "name": { "family": "Jain", "given": "Atul" } }, { "id": "Karthikeyan-S", "name": { "family": "Karthikeyan", "given": "S." } }, { "id": "Morris-S", "name": { "family": "Morris", "given": "S." } }, { "id": "Tonwar-S", "name": { "family": "Tonwar", "given": "S." } } ] }, "primary_object": { "basename": "2005-15.pdf", "url": "https://authors.library.caltech.edu/records/tzq5m-5s364/files/2005-15.pdf" }, "pub_year": "2005", "author_list": "Wiedenbeck, M. E.; Mason, G. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/w4qdc-tr773", "eprint_id": 49284, "eprint_status": "archive", "datestamp": "2023-08-19 15:06:04", "lastmod": "2023-10-17 21:17:01", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "The Cosmic Ray Radiation Dose in Interplanetary Space - Present Day and Worst-Case Evaluations", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2005 Tata Institute of Fundamental Research. \n\nThis work was supported by NASA under NAG5-12929.\n\nPublished - Stone_2005p433.pdf
", "abstract": "A physics-based cosmic-ray transport model has been fit to solar-minimum and solar-maximum cosmic ray\nspectra and used for preliminary evaluations of the radiation dose and dose-equivalent of galactic cosmic\nrays (GCRs). We find a solar-minimum radiation dose-equivalent somewhat lower than previous estimates,\nwith a smaller difference between solar minimum and solar maximum. Measurements of Be-10 in polar ice\ncores and other data show that the cosmic-ray intensity was significantly higher 50 to 100 years ago. The\nestimated radiation levels during these earlier periods were up to ~ 1.7 times greater than during recent solar\nminima.", "date": "2005", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20140905-105722780", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140905-105722780", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-12929" } ] }, "other_numbering_system": { "items": [ { "id": "2005-25", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "Stone_2005p433.pdf", "url": "https://authors.library.caltech.edu/records/w4qdc-tr773/files/Stone_2005p433.pdf" }, "pub_year": "2005", "author_list": "Mewaldt, R. A.; Davis, A. J.; et el." }, { "id": "https://authors.library.caltech.edu/records/beme7-72e87", "eprint_id": 56891, "eprint_status": "archive", "datestamp": "2023-08-19 15:07:50", "lastmod": "2024-01-13 16:17:48", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Richardson-J-D", "name": { "family": "Richardson", "given": "J. D." }, "orcid": "0000-0003-4041-7540" }, { "id": "Wang-C", "name": { "family": "Wang", "given": "C." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "McDonald-F-B", "name": { "family": "McDonald", "given": "F. B." } } ] }, "title": "Plasma Observations from Voyager 2", "ispublished": "unpub", "full_text_status": "public", "note": "We acknowledge the use of data from the ACE science\ncenter. This work was supported by NASA contract\n959203 from IPL to MIT and by grants NNSFC\n403250 I 0 and 40204009\n\nPublished - 2005-30.pdf
", "abstract": "Voyager 2 is now beyond 75 AU and observing the descending phase of the solar cycle. Voyager 2 is the spacecraft in the best position to predict the plasma conditions at Voyager 1 (whose plasma instrument failed). We show that some of the Voyager 1 energetic particle events are associated with plasma changes observed at Voyager 2. Voyager currently observes low speeds, near 400 km/s, suggesting coronal hole flow is not observed. Since the latitudinal speed gradient which occurs in the inner heliosphere at solar minimum has not yet dev3eloped, we can use the speed decrease from Earth to Voyager 2 to determine the solar wind slowdown due to interaction with interstellar H and thus the interstellar H density at the termination shock. We find that the observed slowdown implies a larger H density that previous results.", "date": "2005", "date_type": "published", "publisher": "European Space Agency", "place_of_pub": "Noordwijk, Netherlands", "pagerange": "379-382", "id_number": "CaltechAUTHORS:20150422-152945721", "isbn": "92-9092-903-0", "book_title": "Connecting Sun and Heliosphere", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150422-152945721", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "959203" }, { "agency": "NNSFC", "grant_number": "40204009" }, { "agency": "NNSFC", "grant_number": "403250" } ] }, "other_numbering_system": { "items": [ { "id": "2005-30", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Zurbuchen-T-H", "name": { "family": "Zurbuchen", "given": "T. H." } }, { "id": "Fleck-B", "name": { "family": "Fleck", "given": "B." } } ] }, "primary_object": { "basename": "2005-30.pdf", "url": "https://authors.library.caltech.edu/records/beme7-72e87/files/2005-30.pdf" }, "pub_year": "2005", "author_list": "Richardson, J. D.; Wang, C.; et el." }, { "id": "https://authors.library.caltech.edu/records/dq016-6ha93", "eprint_id": 56467, "eprint_status": "archive", "datestamp": "2023-08-19 15:07:33", "lastmod": "2023-10-23 15:27:03", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Caballero-Lopez-R-A", "name": { "family": "Caballero-Lopez", "given": "R. A." } }, { "id": "Moraal-H", "name": { "family": "Moraal", "given": "H." } }, { "id": "McDonald-F-B", "name": { "family": "McDonald", "given": "F. B." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "The effect of cosmic ray energy changes in the heliosphere on K-capture", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright TATA Institute of Fundamental Research.\n\nThis work was supported by NSF Grant ATM 0107181 and the South African National Research Foundation. RCL was supported by UNAM-DGAPA grant IN106105.\n\nPublished - 2005-22.pdf
", "abstract": "In an accompanying paper we give a re-assessment of cosmic ray energy changes in the heliosphere to determine\nthe effects of acceleration at the solar wind termination shock and modulation in the heliosheath beyond\nthat. In this paper we show that these effects have important consequences for the interpretation of secondary\nto primary ratios of cosmic rays at energies below 1 GeV, i.e. in the region where they are strongly modulated", "date": "2005", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20150408-092437734", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150408-092437734", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "ATM-0107181" }, { "agency": "South African National Research Foundation" }, { "agency": "UNAM-DGAPA", "grant_number": "IN106105" } ] }, "other_numbering_system": { "items": [ { "id": "2005-22", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Acharya-B", "name": { "family": "Acharya", "given": "B." } }, { "id": "Gupta-S", "name": { "family": "Gupta", "given": "S." } }, { "id": "Jain-A", "name": { "family": "Jain", "given": "Atul" } }, { "id": "Karthikeyan-S", "name": { "family": "Karthikeyan", "given": "S." } }, { "id": "Morris-S", "name": { "family": "Morris", "given": "S." } }, { "id": "Tonwar-S", "name": { "family": "Tonwar", "given": "S." } } ] }, "primary_object": { "basename": "2005-22.pdf", "url": "https://authors.library.caltech.edu/records/dq016-6ha93/files/2005-22.pdf" }, "pub_year": "2005", "author_list": "Caballero-Lopez, R. A.; Moraal, H.; et el." }, { "id": "https://authors.library.caltech.edu/records/shahn-emn48", "eprint_id": 49089, "eprint_status": "archive", "datestamp": "2023-08-19 15:05:38", "lastmod": "2023-10-17 21:07:42", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "McDonald-F-B", "name": { "family": "McDonald", "given": "F. B." } }, { "id": "Heikkila-B-C", "name": { "family": "Heikkila", "given": "B. C." } }, { "id": "Lal-N", "name": { "family": "Lal", "given": "N." } }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "Characteristics of the Solar Wind Termination Shock Region from Voyager 1 Observations", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2005 Tata Institute of Fundamental Research.\n\nThis work was supported by NASA under contract NAS7-03001.\n\nPublished - Stone_2005p17.pdf
", "abstract": "The Voyager 1 spacecraft crossed the solar wind termination shock on 16 December 2004 at a distance of\n94.0 AU from the Sun and at a heliolatitude of 34 N. Up to that time, since mid-2002, Voyager 1 had been\non interplanetary magnetic field lines intermittently connected to a source of low-energy particles at the\ntermination shock. The energy spectra after the crossing, and often prior to the crossing as well, resemble the\nenergy spectra expected for anomalous cosmic rays (ACRs) at the shock, with one important difference.\nAlthough the spectra have a power-law dependence at low energies and a roll off to a much steeper power-law\nspectrum at higher energies, similar to that expected for the ACR spectrum at the shock, the energy of\nthe roll off is much lower than observed in the ACR spectrum at the same time. Hence, the ACRs must be\noriginating from a different part of the shock. We find that the roll-off energy for protons is about 3 MeV,\nrather than ~100 MeV expected for ACR protons. The power-law spectral index at low energies is\napproximately \u20131.5, implying a shock strength of ~2.5.", "date": "2005", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20140902-084251924", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140902-084251924", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-03001" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "Stone_2005p17.pdf", "url": "https://authors.library.caltech.edu/records/shahn-emn48/files/Stone_2005p17.pdf" }, "pub_year": "2005", "author_list": "Cummings, A. C.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/zcc2h-5hn31", "eprint_id": 48975, "eprint_status": "archive", "datestamp": "2023-08-19 15:05:26", "lastmod": "2023-10-17 20:35:03", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Voyager 1 in the Vicinity of the Termination Shock: an Overview of Observations beyond 94 AU in the Heliosheath", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2005 Tata Institute of Fundamental Research.\n\nProvided by the NASA Astrophysics Data System.\n\nPublished - 2005ICRC____2___45S.pdf
", "abstract": "Voyager 1 has crossed the termination shock, a major milestone in its journey to interstellar space. Since\nmid-2002, Voyager 1 has been moving outward with the shock, which reached its maximum distance in\nmid-2004 and starting moving back in as the solar wind pressure declined. On December 15, 2004, the\nintensity of low energy ions increased rapidly as the termination shock approached Voyager, and plasma\nwaves excited by electrons streaming along the magnetic field indicated the shock was nearby. Voyager 1\ncrossed the inward moving shock on December 16 at 94 AU, observing the enhanced magnetic field as\nexpected in the subsonic flow in the heliosheath. The lowest energy particles also abruptly increased with a\nlow energy spectral slope of approximately -1.5, corresponding to a shock strength of ~2.5. In distinction to\nthe upstream ions which were highly variable and strongly beamed along the magnetic field, in the\nheliosheath the energetic ion intensity is much less variable and more nearly isotropic, indicating a stable\nshock source and steady conditions for diffusive propagation. However, the low energy anomalous cosmic\nrays were not observed at the shock, indicating that their source region is remote from the location of\nVoyager 1. Continuing observations should reveal new aspects of this final frontier of the heliosphere.", "date": "2005", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20140827-093914525", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140827-093914525", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "2005ICRC____2___45S.pdf", "url": "https://authors.library.caltech.edu/records/zcc2h-5hn31/files/2005ICRC____2___45S.pdf" }, "pub_year": "2005", "author_list": "Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/ap5c2-zwd26", "eprint_id": 48973, "eprint_status": "archive", "datestamp": "2023-08-19 15:05:22", "lastmod": "2023-10-17 20:34:58", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "McDonald-F-B", "name": { "family": "McDonald", "given": "F. B." } }, { "id": "Heikkila-B-C", "name": { "family": "Heikkila", "given": "B. C." } }, { "id": "Lal-N", "name": { "family": "Lal", "given": "N." } }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "Appearance of a Third Episode of Enhanced Particle Intensities at 94 AU: Voyager 1 in the Heliosheath", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2005 Tata Institute of Fundamental Research.\n\nProvided by the NASA Astrophysics Data System.\n\nThis work was supported by NASA under contract NAS7-03001.\n\nPublished - 2005ICRC____2___43S.pdf
", "abstract": "The Voyager 1 spacecraft crossed the solar wind termination shock on 16 December 2004 at 94.0 AU and\nbegan observing a new episode of enhanced intensities of termination shock particles (TSPs) in the\nheliosheath. Two earlier TSP episodes were observed upstream of the shock beginning in mid-2002 at 84\nAU as Voyager 1 and the shock were moving outward together. The upstream TSPs exhibited strong field-aligned\nbeaming and large spectral variability on a daily time scale that likely resulted from variations in the\nconnectivity of Voyager 1 to the source at the shock. In the heliosheath the TSP intensity and spectra are\nmuch less variable and the field aligned streaming greatly reduced, consistent with more uniform\npropagation conditions and a stable source intensity. The gradual evolution of the of the TSP and ACR\nspectra as Voyager l moves further beyond the shock should reveal new aspects of the heliosheath and\nacceleration of TSPs and ACRs.", "date": "2005", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20140827-093513358", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140827-093513358", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-03001" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "2005ICRC____2___43S.pdf", "url": "https://authors.library.caltech.edu/records/ap5c2-zwd26/files/2005ICRC____2___43S.pdf" }, "pub_year": "2005", "author_list": "Stone, E. C.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/mjxec-bwj66", "eprint_id": 56515, "eprint_status": "archive", "datestamp": "2023-08-19 15:07:42", "lastmod": "2023-10-23 15:31:05", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "McDonald-F-B", "name": { "family": "McDonald", "given": "F. B." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Burlaga-L-F", "name": { "family": "Burlaga", "given": "L. F." }, "orcid": "0000-0002-5569-1553" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Heikkila-B-C", "name": { "family": "Heikkila", "given": "B. C." } }, { "id": "Lal-N", "name": { "family": "Lal", "given": "N." } }, { "id": "Ness-N-F", "name": { "family": "Ness", "given": "N. F." } }, { "id": "Richardson-J-D", "name": { "family": "Richardson", "given": "J. D." }, "orcid": "0000-0003-4041-7540" }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "Voyager 2 Observations of MeV Ions in the Outer Heliosphere Over the Solar Maximum Period of Cycle 23", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright TATA Institute of Fundamental Research.\n\nPublished - 2005-26.pdf
", "abstract": "Over the period 2001.0 - 2005.4, (63 - 74 AU) Voyager 2 observed a series of 9 energetic particle increases\nthat persist over some 3 - 4 solar rotations, occur with a quasi-periodicity of some 145 days and are generally\nassociated with the passage of a merged interaction region. With the onset of GCR recovery from solar\nmaximum levels in 2004.6 there is a marked change in the nature of the V2 energetic particle increases that\nsuggest these new events originated at the termination shock.", "date": "2005", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20150409-093457645", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150409-093457645", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "2005-26", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Acharya-B", "name": { "family": "Acharya", "given": "B." } }, { "id": "Gupta-S", "name": { "family": "Gupta", "given": "S." } }, { "id": "Jain-A", "name": { "family": "Jain", "given": "Atul" } }, { "id": "Karthikeyan-S", "name": { "family": "Karthikeyan", "given": "S." } }, { "id": "Morris-S", "name": { "family": "Morris", "given": "S." } }, { "id": "Tonwar-S", "name": { "family": "Tonwar", "given": "S." } } ] }, "primary_object": { "basename": "2005-26.pdf", "url": "https://authors.library.caltech.edu/records/mjxec-bwj66/files/2005-26.pdf" }, "pub_year": "2005", "author_list": "McDonald, F. B.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/8bdps-bv587", "eprint_id": 49176, "eprint_status": "archive", "datestamp": "2023-08-19 15:05:55", "lastmod": "2023-10-17 21:11:33", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Desai-M-I", "name": { "family": "Desai", "given": "M. I." }, "orcid": "0000-0002-7318-6008" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Solar Energetic Particle Spectra and Composition in the\n October/November 2003 Events", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2005 Tata Institute of Fundamental Research.\n\nThis work was supported by NASA at Caltech (under grant NAG5-6912), the Jet Propulsion Laboratory,\nNASA/GSFC, and in part under Caltech grant 44A1055749 at the University of Maryland.\n\nPublished - Stone_2005p311.pdf
", "abstract": "The series of extremely large solar energetic particle (SEP) events of October and November 2003 were well\nobserved by many spacecraft. We have combined data from the ULEIS and SIS instruments on ACE to\nobtain particle intensities over >3 decades in energy. The event-integrated composition (carbon through\niron) not only varies from event to event, but also as a function of energy within an SEP event. These\ncompositional variations are a result of the element-dependent spectral breaks and we suggest they can be\nsubstantially reduced when the spectra are examined in terms of rigidity-dependent escape from the shock.", "date": "2005", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20140903-084303356", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140903-084303356", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" }, { "agency": "JPL" }, { "agency": "Goddard Space Flight Center" }, { "agency": "Caltech", "grant_number": "44A1055749" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "Stone_2005p311.pdf", "url": "https://authors.library.caltech.edu/records/8bdps-bv587/files/Stone_2005p311.pdf" }, "pub_year": "2005", "author_list": "Cohen, C. M. S.; Mason, G. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/effh6-t9k64", "eprint_id": 48998, "eprint_status": "archive", "datestamp": "2023-08-19 15:05:34", "lastmod": "2023-10-17 20:35:58", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Ultra-Heavy Elements Above 10 MeV/nucleon in Solar Energetic Particle Events", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2005 Tata Institute of Fundamental Research.\n\nThis work was supported by NASA at Caltech (under grant NAG5-6912), JPL, and GSFC.\n\nPublished - Stone_2005p107.pdf
", "abstract": "Recent measurements from Wind/LEMT and ACE/ULEIS show that elements heavier than Zn (Z=30) can be enhanced by factors of ~100 to 10,000 in impulsive solar energetic particle (SEP) events at energies below several MeV/nuc. Using data from the Solar Isotope Spectrometer (SIS) on ACE at energies from ~10 to >100 MeV/nuc, we find that even large gradual events at these energies often are very iron rich and may appear similar in composition to impulsive events. Since August 1997, SIS has recorded ~1000 nuclei with Z\nof 29 or greater, including measurable quantities of Zn, Ge and Se (Z=30, 32, and 34). Although quantitative analysis to obtain ultra-heavy abundances remains to be done, we present sample observations that establish the potential of extending ultra-heavy SEP measurements up to higher energies in order to test models of\nacceleration and abundance enhancements in both gradual and impulsive events.", "date": "2005", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20140827-135634611", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140827-135634611", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" }, { "agency": "JPL" }, { "agency": "Goddard Space Flight Center" } ] }, "other_numbering_system": { "items": [ { "id": "2005-13", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "Stone_2005p107.pdf", "url": "https://authors.library.caltech.edu/records/effh6-t9k64/files/Stone_2005p107.pdf" }, "pub_year": "2005", "author_list": "Leske, R. A.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/x9je6-s8q16", "eprint_id": 25107, "eprint_status": "archive", "datestamp": "2023-08-19 15:03:02", "lastmod": "2024-01-13 05:23:01", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Villagrasa-C", "name": { "family": "Villagrasa", "given": "C." } }, { "id": "George-J", "name": { "family": "George", "given": "J." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Yanazak-N", "name": { "family": "Yanazak", "given": "N." } } ] }, "title": "Measurement of residual nucleus cross sections and recoil energies in p + Fe collisions at 300, 500, 750, 1000 and 1500 MeV", "ispublished": "unpub", "full_text_status": "public", "keywords": "proton-nucleus reactions, nuclear spallation", "note": "\u00a9 2005 American Institute of Physics. \nIssue Date: 24 May 2005.\n\nPublished - VILaipcp05.pdf
", "abstract": "The production of residual nuclei in p + Fe collisions has been measured at GSI on the FRS facility by means of the reverse kinematic techniques at 300, 500, 750, 1000 and 1500 MeV/A. The cross-sections larger than 0.01 mb of all isotopes with Z larger than 8 have been obtained. Velocity distributions were also measured. Comparisons to models describing spallation reactions and some empirical formulae often used in astrophysics are presented. These data are directly used to calculate impurety production and DPAs in a thin window as foreseen in spallation sources or accelerator-driven systems.", "date": "2005", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, N.Y.", "pagerange": "842-845", "id_number": "CaltechAUTHORS:20110825-151253155", "isbn": "0-7354-0254-X", "book_title": "International Conference on Nuclear Data for Science and Technology", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110825-151253155", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Haight-R-C", "name": { "family": "Haight", "given": "R. C." } }, { "id": "Chadwick-M-B", "name": { "family": "Chadwick", "given": "M. B." } }, { "id": "Kawano-T", "name": { "family": "Kawano", "given": "T." } }, { "id": "Talou-P", "name": { "family": "Talou", "given": "P." } } ] }, "doi": "10.1063/1.1945137", "primary_object": { "basename": "VILaipcp05.pdf", "url": "https://authors.library.caltech.edu/records/x9je6-s8q16/files/VILaipcp05.pdf" }, "pub_year": "2005", "author_list": "Villagrasa, C.; George, J.; et el." }, { "id": "https://authors.library.caltech.edu/records/2nfa6-m0m63", "eprint_id": 49091, "eprint_status": "archive", "datestamp": "2023-08-19 15:05:42", "lastmod": "2023-10-17 21:07:46", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Geier-S", "name": { "family": "Geier", "given": "S." }, "orcid": "0000-0002-3948-9339" }, { "id": "Rauch-B-F", "name": { "family": "Rauch", "given": "B. F." } }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Link-J-T", "name": { "family": "Link", "given": "J. T." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Scott-L-M", "name": { "family": "Scott", "given": "L. M." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } } ] }, "title": "Observations of the Ultra-Heavy Galactic Cosmic-Ray Abundances (30 \u2264 Z \u2264 40) with TIGER", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2005 Tata Institute of Fundamental Research.\n\n\nThis research was supported by the National Aeronautics and Space Administration under grant NNG05WC04G.\n\nPublished - Stone_2005p93.pdf
", "abstract": "Observations of Ultra-Heavy galactic cosmic rays (GCR) help to distinguish the possible origins of GCRs.\nThe Trans-Iron Galactic Element Recorder (TIGER) measures the charge (Z) and energy of GCRs using a\ncombination of scintillation counters, Cherenkov counters, and a scintillating fiber hodoscope. TIGER has\naccumulated data on two successful flights from McMurdo, Antarctica: the first launched in December of\n2001 with a total flight duration of 31.8 days and the second in December of 2003 with a total flight duration\nof 18 days. We present a preliminary analysis of the combined data from both flights for Ultra-Heavy GCRs.", "date": "2005", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20140902-091332874", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140902-091332874", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG05WC04G" } ] }, "other_numbering_system": { "items": [ { "id": "2005-29", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "Stone_2005p93.pdf", "url": "https://authors.library.caltech.edu/records/2nfa6-m0m63/files/Stone_2005p93.pdf" }, "pub_year": "2005", "author_list": "Geier, S.; Rauch, B. F.; et el." }, { "id": "https://authors.library.caltech.edu/records/f7esv-qpt23", "eprint_id": 56396, "eprint_status": "archive", "datestamp": "2023-08-19 15:06:57", "lastmod": "2023-10-23 15:22:11", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Kirlay-P", "name": { "family": "Kiraly", "given": "P." } }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Posner-A", "name": { "family": "Posner", "given": "A." } }, { "id": "Rodriguez-Posner-J", "name": { "family": "Rodriquez-Posner", "given": "J." } } ] }, "title": "Energy dependence of cumulative suprathermal and energetic particle fluence plots", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright TATA Institute of Fundamental Research\n\nPublished - 2005-10.pdf
", "abstract": "Suprathermal and energetic particle flux variability can be statistically characterized in a number of ways. As time histories of flux integrals (cumulative fluences) are relevant both for practical reasons (radiation effects) and for a better understanding of the production and propagation processes, simple quantitative methods are of some interest. Previous studies (e.g. Mewaldt et al., 2001)[1] showed that the character of cumulative fluence plots changed substantially with energy. While at several MeV/nuc a few solar particle events predominate, at much lower energies similar contributions from many separate events of various origins were found. We shall now use a simple parametric method for comparisons, and mention some other possibilities. As in the Kolmogorov hypothesis test, the maximum vertical distance of normalized cumulative plots from the straight line valid for a constant flux will be shown to be useful. Small values of that parameter (called K here for Kolmogorov) indicate variation in many small steps, while large K-values correspond to the dominance of a small number of large events. Below a few MeV/nuc K-parameters will be shown to decrease with decreasing energies. Extrapolations to small energies will be mainly discussed.", "date": "2005", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20150406-144458133", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150406-144458133", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "2005-10", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Acharya-B", "name": { "family": "Acharya", "given": "B." } }, { "id": "Gupta-S", "name": { "family": "Gupta", "given": "S." } }, { "id": "Jain-A", "name": { "family": "Jain", "given": "Atul" } }, { "id": "Karthikeyan-S", "name": { "family": "Karthikeyan", "given": "S." } }, { "id": "Morris-S", "name": { "family": "Morris", "given": "S." } }, { "id": "Tonwar-S", "name": { "family": "Tonwar", "given": "S." } } ] }, "primary_object": { "basename": "2005-10.pdf", "url": "https://authors.library.caltech.edu/records/f7esv-qpt23/files/2005-10.pdf" }, "pub_year": "2005", "author_list": "Kiraly, P.; Mason, G. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/hhtja-61w39", "eprint_id": 48972, "eprint_status": "archive", "datestamp": "2023-08-19 15:05:18", "lastmod": "2023-10-17 20:34:56", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "McDonald-F-B", "name": { "family": "McDonald", "given": "F. B." } }, { "id": "Heikkila-B-C", "name": { "family": "Heikkila", "given": "B. C." } }, { "id": "Lal-N", "name": { "family": "Lal", "given": "N." } }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "Evidence for two energetic particle sources at the termination shock", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2005 Tata Institute of Fundamental Research.\n\nProvided by the NASA Astrophysics Data System.\n\nThis work was supported by NASA under contract NAS7-03001.\n\nPublished - 2005ICRC____2___47S.pdf
", "abstract": "During the period of unusual enhancements in the intensities of low energy ions observed by Voyager 1\nbeyond 85 AU, the energy spectra appear to have two components. Upstream of the termination shock, low\nenergy ions (<10 MeV/nucleon) stream along the magnetic field and have significant variations in intensity\nand spectral slope. Their power law spectrum often shows no evidence of modulation at the lowest energies.\nThis suggests a nearby source region of termination shock particles (TSPs) connected to Voyager along the\ninterplanetary magnetic field. At intermediate energies ( ~ 10 to 60 Me V /nucleon), the helium spectrum is\nrelatively steady and consistent with that of anomalous cosmic rays (ACRs) with modulation increasing with\ndecreasing energy. This indicates that the ACR source is a remote region of the termination shock not\nconnected to Voyager along the magnetic field. This distinction between the TSP and ACR sources was\nconfirmed when Voyager 1 crossed the termination shock at 94 AU.", "date": "2005", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20140827-092815858", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140827-092815858", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-03001" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "2005ICRC____2___47S.pdf", "url": "https://authors.library.caltech.edu/records/hhtja-61w39/files/2005ICRC____2___47S.pdf" }, "pub_year": "2005", "author_list": "Stone, E. C.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/awt8h-59x26", "eprint_id": 56402, "eprint_status": "archive", "datestamp": "2023-08-19 15:07:06", "lastmod": "2023-10-23 15:22:27", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Solar-Particle Energy Spectra during the Large Events of October-November 2003 and January 2005", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright TATA Institute of Fundamental Research\n\nThis work was supported by NASA grant NAG5-6912.\n\nPublished - 2005-14.pdf
", "abstract": "The Solar Isotope Spectrometer (SIS) aboard the Advanced Composition Explorer (ACE) has beeo measuring solar energetic particle abundances since ACE was launched in August 1997. SIS is a silicon detector telescope that identifies charged particles via the multiple dE/dx vs. total energy technique, and to date, most measurements reported by SIS have beeo limited in energy to those particles that stop in the instrument. Io this paper, we will summarize the multiple dE/dx techoique used to identify particles that penetrate through the bottom of SIS, extending the energy ranges for elemental abundance measurements. Io preliminary analysis, the upper energy limit for oxygen has beeo extended from -90 MeV/nuc for\nstopping particles to -300 MeV/nuc for penetrating particles, and the upper energy limit for iron has beeo\nextended from -l 6S MeV /nuc to -500 MeV /nuc. We apply this techoique to SIS measurements oflarge SEP\nevents, such as the Nov. 6, 1997 event and the recent Jan. 20, 2005 event, to extend the measured spectra, to\nlook for evidence of spectral breaks.", "date": "2005", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20150406-154528900", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150406-154528900", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "2005-14", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Acharya-B", "name": { "family": "Acharya", "given": "B." } }, { "id": "Gupta-S", "name": { "family": "Gupta", "given": "S." } }, { "id": "Jain-A", "name": { "family": "Jain", "given": "Atul" } }, { "id": "Karthikeyan-S", "name": { "family": "Karthikeyan", "given": "S." } }, { "id": "Morris-S", "name": { "family": "Morris", "given": "S." } }, { "id": "Tonwar-S", "name": { "family": "Tonwar", "given": "S." } } ] }, "primary_object": { "basename": "2005-14.pdf", "url": "https://authors.library.caltech.edu/records/awt8h-59x26/files/2005-14.pdf" }, "pub_year": "2005", "author_list": "Labrador, A. W.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/xm0me-ayh61", "eprint_id": 56400, "eprint_status": "archive", "datestamp": "2023-08-19 15:07:02", "lastmod": "2023-10-23 15:22:25", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "High Energy Ionic Charge State Composition in the October/November 2003 and January 20, 2005 SEP Events", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright TATA Institute of Fundamental Research\n\nWe thank Joe Mazur of Aerospace Corp. for making SAMPEX data available for the 20 Jan. 2005 event. This work was supported in part by NASA grant NASGS-8877.\n\nPublished - 2005-11.pdf
", "abstract": "The ionic charge states of solar energetic particles (SEPs) probe source-material temperatures and acceleration and transport conditions. The MAST instrument on SAMPEX measures SEP ionic charge states at energies greater than ~15 MeV/nuc and at iron energies up to ~90 MeV/nuc using the geomagnetic filter technique. Charge state measurements for large gradual SEP events by MAST and by other experiments suggest that event-to-event variations in the mean charge states of abundant elements are correlated with abundance ratios (e.g. Fe/O). We present charge state measurements for the October/November 2003 events that suggest different source material temperatures for those events. We also present charge state measurements for the January 20, 2005 event, which contrasts with the previously demonstrated Q(Fe) vs. Fe/O correlation. In this event solar and SEP data indicate that the first high-energy particles left the sun when the shock was ~1.5 solar radii above the solar surface. At this altitude charge-equilibration calculations and the observed mean charge states of +12 for Fe imply that <90 seconds were available to accelerate and release the particles. These observations therefore present a serious challenge to SEP acceleration models.", "date": "2005", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20150406-152216162", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150406-152216162", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NASGS-8877" } ] }, "other_numbering_system": { "items": [ { "id": "2005-11", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Acharya-B", "name": { "family": "Acharya", "given": "B." } }, { "id": "Gupta-S", "name": { "family": "Gupta", "given": "S." } }, { "id": "Jain-A", "name": { "family": "Jain", "given": "Atul" } }, { "id": "Karthikeyan-S", "name": { "family": "Karthikeyan", "given": "S." } }, { "id": "Morris-S", "name": { "family": "Morris", "given": "S." } }, { "id": "Tonwar-S", "name": { "family": "Tonwar", "given": "S." } } ] }, "primary_object": { "basename": "2005-11.pdf", "url": "https://authors.library.caltech.edu/records/xm0me-ayh61/files/2005-11.pdf" }, "pub_year": "2005", "author_list": "Labrador, A. W.; Leske, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/rqapy-aqt65", "eprint_id": 24787, "eprint_status": "archive", "datestamp": "2023-08-19 14:59:04", "lastmod": "2024-01-13 05:19:30", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Laity-A-C", "name": { "family": "Laity", "given": "Anastasia Clower" } }, { "id": "Anagnostou-N", "name": { "family": "Anagnostou", "given": "Nate" } }, { "id": "Berriman-G-B", "name": { "family": "Berriman", "given": "G. Bruce" }, "orcid": "0000-0001-8388-534X" }, { "id": "Good-J-C", "name": { "family": "Good", "given": "John C." } }, { "id": "Jacob-J-C", "name": { "family": "Jacob", "given": "Joseph C." } }, { "id": "Katz-D-S", "name": { "family": "Katz", "given": "Daniel S." } }, { "id": "Prince-T-A", "name": { "family": "Prince", "given": "Thomas A." }, "orcid": "0000-0002-8850-3627" } ] }, "title": "Montage: An Astronomical Image Mosaic Service for the NVO", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2005 Astronomical Society of the Pacific. Montage is funded by NASA's Earth Science Technology Office, Computational Technnologies Project, under Cooperative Agreement Number NCC5-626 between NASA and the California Institute of Technology.\n\nPublished - Laity2005p9563Astronomical_Data_Analysis_Software_And_Systems_Xiv_Proceedings.pdf
", "abstract": "Montage is a software system for generating astronomical image mosaics according to user-specified size, rotation, WCS-compliant projection and coordinate system, with background modeling and rectification capabilities. Its architecture has been described in the proceedings of ADASS XII and XIII (Berriman et al. 2003, 2004). It has been designed as a toolkit, with independent modules for image reprojection, background rectification and co-addition, and will run on workstations, clusters and grids. The primary limitation of Montage thus far has been in the projection algorithm. It uses a spherical trigonometry approach that is general at the expense of speed. The reprojection algorithm has now been made 30 times faster for commonly used tangent plane to tangent plane reprojections that cover up to several square degrees, through modification of a custom algorithm first derived for the Spitzer Space Telescope. This focus session will describe this algorithm, demonstrate the generation of mosaics in real time, and describe applications of the software. In particular, we will highlight one case study which shows how Montage is supporting the generation of science-grade mosaics of images measured with the Infrared Array Camera aboard the Spitzer Space Telescope.", "date": "2005", "date_type": "published", "publisher": "Astronomical Society of the Pacific", "place_of_pub": "San Francisco, CA", "pagerange": "34-38", "id_number": "CaltechAUTHORS:20110810-134016075", "isbn": "1-58381-215-6", "book_title": "Astronomical Data Analysis Software and Systems XIV", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110810-134016075", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NCC5-626" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" }, { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" } ] }, "contributors": { "items": [ { "id": "Shopbell-P-L", "name": { "family": "Shopbell", "given": "Patrick L." } }, { "id": "Britton-M-C", "name": { "family": "Britton", "given": "Matthew C." } }, { "id": "Ebert-R-J", "name": { "family": "Ebert", "given": "Rick" } } ] }, "primary_object": { "basename": "Laity2005p9563Astronomical_Data_Analysis_Software_And_Systems_Xiv_Proceedings.pdf", "url": "https://authors.library.caltech.edu/records/rqapy-aqt65/files/Laity2005p9563Astronomical_Data_Analysis_Software_And_Systems_Xiv_Proceedings.pdf" }, "pub_year": "2005", "author_list": "Laity, Anastasia Clower; Anagnostou, Nate; et el." }, { "id": "https://authors.library.caltech.edu/records/4jc12-jwg39", "eprint_id": 56460, "eprint_status": "archive", "datestamp": "2023-08-19 15:07:29", "lastmod": "2023-10-23 15:26:26", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Kecskemety-K", "name": { "family": "Kecskemety", "given": "K." } }, { "id": "Zeldovich-M-A", "name": { "family": "Zeldovich", "given": "M.A." } }, { "id": "Logachev-Yu-I", "name": { "family": "Logachev", "given": "Yu. I." } }, { "id": "Heber-B", "name": { "family": "Heber", "given": "B." } }, { "id": "Kiraly-P", "name": { "family": "Kiraly", "given": "P." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Posner-A", "name": { "family": "Posner", "given": "A." } }, { "id": "Rodgriquez-Pacheco-J", "name": { "family": "Rodriguez-Pacheco", "given": "J." } } ] }, "title": "Quiet time fluxes and radial gradients of low-energy protons in the inner and outer heliosphere", "ispublished": "unpub", "full_text_status": "public", "note": "Pulse-height data from the Voyager CRS instrument was kindly provided by F.B. McDonald, Ulysses COSPIN LET data were obtained from R.G. Marsden. The International Space Science Institute (Bern, Switzerland) is thanked for financial and organizational support.\n\nPublished - 2005-21.pdf
", "abstract": "Radial variations of low-energy (~1-8 MeV) quiet-time fluxes of protons are examined at distances of 20-85 AU during low solar activity periods using Voyager 1-2 data and compared with Ulysses fluxes at 1-5 AU as well as IMP-8 and SOHO at Earth and Helios between 0.3 and 1 AU. To obtain nearly background-free fluxes, the data are based on a careful pulse-height analysis. Except for high solar activity periods, contaminated with solar particles, all fluxes are very low, of the order of, and below 10^(-5) /(cm^2 s sr MeV). The Ulysses fluxes seem to be the lowest, whereas Helios and Voyager fluxes are nearly at the same level. The radial variation in 1-8 MeV suggests a negative gradient from 0.5 to about 2 AU that gradually turns\npositive beyond 2 AU. Whereas the true variation is difficult to infer between 5 and 17 AU due to solar\ncontribution, from 30 to about 60 AU it exhibits a wide plateau, beyond which a slight increasing tendency is observed. At energies above ~6 MeV a clear contribution of anomalous hydrogen is observed.", "date": "2005", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20150408-081154385", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150408-081154385", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "International Space Station Institute" } ] }, "other_numbering_system": { "items": [ { "id": "2005-21", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Acharya-B", "name": { "family": "Acharya", "given": "B." } }, { "id": "Gupta-S", "name": { "family": "Gupta", "given": "S." } }, { "id": "Jain-A", "name": { "family": "Jain", "given": "Atul" } }, { "id": "Karthikeyan-S", "name": { "family": "Karthikeyan", "given": "S." } }, { "id": "Morris-S", "name": { "family": "Morris", "given": "S." } }, { "id": "Tonwar-S", "name": { "family": "Tonwar", "given": "S." } } ] }, "primary_object": { "basename": "2005-21.pdf", "url": "https://authors.library.caltech.edu/records/4jc12-jwg39/files/2005-21.pdf" }, "pub_year": "2005", "author_list": "Kecskemety, K.; Zeldovich, M.A.; et el." }, { "id": "https://authors.library.caltech.edu/records/tc7zz-sxr34", "eprint_id": 56150, "eprint_status": "archive", "datestamp": "2023-08-19 15:06:48", "lastmod": "2023-10-20 23:42:43", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Kiraly-P", "name": { "family": "Kiraly", "given": "P." } }, { "id": "Axford-W-I", "name": { "family": "Axford", "given": "W. I." } }, { "id": "Daibog-E-I", "name": { "family": "Daibog", "given": "E. I." } }, { "id": "Heber-B", "name": { "family": "Heber", "given": "B." } }, { "id": "Kallenbach-R", "name": { "family": "Kallenbach", "given": "R." } }, { "id": "Kecskemety-K", "name": { "family": "Kecskemety", "given": "K." } }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Logacheb-Y-I", "name": { "family": "Logacheb", "given": "Y. I." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Posner-A", "name": { "family": "Posner", "given": "A." } }, { "id": "Rodriguez-Pacheco-J", "name": { "family": "Rodriguez-Pacheco", "given": "J." } }, { "id": "Treumann-R", "name": { "family": "Treumann", "given": "R." } }, { "id": "Zeldovich-M-A", "name": { "family": "Zeldovich", "given": "M. A." } } ] }, "title": "Solar and heliospheric sources of suprathermal and energetic particle populations", "ispublished": "unpub", "full_text_status": "public", "note": "Financial and organizational support of the International Space Science Institute (Bern) is gratefully\nacknowledged.\n\nPublished - 2005-09.pdf
", "abstract": "Objectives and some preliminary findings of an ongoing international team project carried out at ISSI, Bern will be presented. Suprathermal and energetic particle\ns in interplanetary space have a multitude of origins,\ni.e. acceleration and propagation hi stories. Solar flares, coronal mass ejections (CMEs), co-rotating interaction regions (CIRs), the heliospheric termination shock, planetary bow shocks and magnetospheres have all been recognized as energetic particle sources. Less energetic (suprathermal) particles of solar origin and pick-up ions have also a vital role both in their own right and as seeds of energetic particles accelerated in interplanetary disturbances. The relative contributions of various particle populations vary with energy and with the phase of the solar cycle. Particular attention will be given in our project to quiet periods and to large events. While quiet-time fluxes are expected to shed light on some\nbase-line features of coronal and interplanetary acceleration processes, relatively large events dominate bot\nh the long-term fluence levels and the statistical properties of cumulative fluence plots. The importance of energetic and suprathermal particles that mostly cannot escape into interplanetary space, but contribute to co\nronal heating and possibly also to solar wind composition, will also be discussed.\n\nB. Sripathi Acharya, Sunil Gupta, P. Jagadeesan, Atul Jain, S. Karthikeyan, Samuel Morris, and Suresh Tonwar", "date": "2005", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20150326-150613018", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150326-150613018", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "2005-09", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Sripathi-Acharya-B", "name": { "family": "Sripathi Acharya", "given": "B." } }, { "id": "Gupta-S", "name": { "family": "Gupta", "given": "Sunil" } }, { "id": "Jagadeesan-P", "name": { "family": "Jagadeesan", "given": "P." } }, { "id": "Jain-A", "name": { "family": "Jain", "given": "Atul" } }, { "id": "Karthikeyan-S", "name": { "family": "Karthikeyan", "given": "S." } }, { "id": "Morris-S", "name": { "family": "Morris", "given": "Samuel" } }, { "id": "Tonwar-S", "name": { "family": "Tonwar", "given": "Suresh" } } ] }, "primary_object": { "basename": "2005-09.pdf", "url": "https://authors.library.caltech.edu/records/tc7zz-sxr34/files/2005-09.pdf" }, "pub_year": "2005", "author_list": "Kiraly, P.; Axford, W. I.; et el." }, { "id": "https://authors.library.caltech.edu/records/w7292-ve195", "eprint_id": 56421, "eprint_status": "archive", "datestamp": "2023-08-19 15:07:24", "lastmod": "2023-10-23 15:23:31", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Kecskemety-K", "name": { "family": "Kecskemety", "given": "K." } }, { "id": "Daibog-D-I", "name": { "family": "Daibog", "given": "D.I." } }, { "id": "Lagacheb-Yu-I", "name": { "family": "Logacheb", "given": "Yu.I." } }, { "id": "Kota-J", "name": { "family": "Kota", "given": "J." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "Dependence of decay rates of SEP events on characteristics of interplanetary medium and on radial distance", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright TATA Institute of Fundamental Research\n\n\nData from the Ulysses COSPIN LET instrument were obtained from R.G. Marsden, Helios proton data were provided by H. Kunow, IMP-8 CPME fluxes were obtained from the website of the instrument.\n\nPublished - 2005-20.pdf
", "abstract": "The shape of the particle flux decline in solar energetic particle (SEP) events is of particular importance in\nunderstanding the propagation of energetic particles in the interplanetary medium. The majority offew-MeV particle events exhibit exponential declines indicating the importance of adiabatic deceleration and convection transport. Then value of the decay time 't depends on the differential spectral index y, solar wind speed, and on the distance from the Sun. By analyzing the dependence of ' on enviromnental plasma parameters we showed earlier that ' tends to decrease with the increase of both solar wind speed and magnetic field strength. Comparing simultaneous observations at various radial distances (at IMP, ACE,\nHelios, and ffiysses) we find that whereas high-energy (tens of MeVs) proton profiles sometimes are surprisingly identical at different radii, MeV protons in the same events have significantly longer decays at farther locations than near 1 AU. This is incompatible both with pure diffusive particle propagation and with trapping between converging magnetic field lines near the Sun and at the front of traveling shock, but qualitatively supports convection transport and adiabatic deceleration. Using a simple numerical model including diffusion and adiabatic cooling the time profiles are calculated and compared with observations.", "date": "2005", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20150407-094446946", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150407-094446946", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "2005-20", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Acharya-B", "name": { "family": "Acharya", "given": "B." } }, { "id": "Gupta-S", "name": { "family": "Gupta", "given": "S." } }, { "id": "Jain-A", "name": { "family": "Jain", "given": "Atul" } }, { "id": "Karthikeyan-S", "name": { "family": "Karthikeyan", "given": "S." } }, { "id": "Morris-S", "name": { "family": "Morris", "given": "S." } }, { "id": "Tonwar-S", "name": { "family": "Tonwar", "given": "S." } } ] }, "primary_object": { "basename": "2005-20.pdf", "url": "https://authors.library.caltech.edu/records/w7292-ve195/files/2005-20.pdf" }, "pub_year": "2005", "author_list": "Kecskemety, K.; Daibog, D.I.; et el." }, { "id": "https://authors.library.caltech.edu/records/dtd12-ydn98", "eprint_id": 56511, "eprint_status": "archive", "datestamp": "2023-08-19 15:07:37", "lastmod": "2023-10-23 15:30:55", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Davis-M-E-Astro", "name": { "family": "Davis", "given": "Mark E." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Scott-L-M", "name": { "family": "Scott", "given": "L. M." } }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "The Level of Solar Modulation of Galactic Cosmic Rays from 1997 to 2005 as Derived from ACE Measurements of Elemental Energy Spectra", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright TATA Institute of Fundamental Research\n\nThis work was supported by NASA at Caltech (grant NAG5-6912), JPL, GSFC, and Washinton Univ.\n\nPublished - 2005-24.pdf
", "date": "2005", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20150409-092051213", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150409-092051213", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "2005-24", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Acharya-B", "name": { "family": "Acharya", "given": "B." } }, { "id": "Gupta-S", "name": { "family": "Gupta", "given": "S." } }, { "id": "Jain-A", "name": { "family": "Jain", "given": "Atul" } }, { "id": "Karthikeyan-S", "name": { "family": "Karthikeyan", "given": "S." } }, { "id": "Morris-S", "name": { "family": "Morris", "given": "S." } }, { "id": "Tonwar-S", "name": { "family": "Tonwar", "given": "S." } } ] }, "primary_object": { "basename": "2005-24.pdf", "url": "https://authors.library.caltech.edu/records/dtd12-ydn98/files/2005-24.pdf" }, "pub_year": "2005", "author_list": "Wiedenbeck, M. E.; Davis, Mark E.; et el." }, { "id": "https://authors.library.caltech.edu/records/f3btt-8fh63", "eprint_id": 49283, "eprint_status": "archive", "datestamp": "2023-08-19 15:06:00", "lastmod": "2023-10-17 21:16:58", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Miyasaka-Hiromasa", "name": { "family": "Miyasaka", "given": "H." }, "orcid": "0000-0002-8074-4186" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Haggerty-D-K", "name": { "family": "Haggerty", "given": "D. K." }, "orcid": "0000-0001-6395-8943" }, { "id": "Nagata-K", "name": { "family": "Nagata", "given": "K." } }, { "id": "Kikuchi-Jun", "name": { "family": "Kikuchi", "given": "J." } }, { "id": "Doke-T", "name": { "family": "Doke", "given": "T." } }, { "id": "Hasebe-N", "name": { "family": "Hasebe", "given": "N." } }, { "id": "Maezawa-K", "name": { "family": "Maezawa", "given": "K." } }, { "id": "Takashima-T", "name": { "family": "Takashima", "given": "T." } }, { "id": "Ihara-A", "name": { "family": "Ihara", "given": "A." } }, { "id": "Matsuoka-A", "name": { "family": "Matsuoka", "given": "A." } } ] }, "title": "ACE/NOZOMI Multispacecraft Observations of Solar Energetic\n Particles", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2005 Tata Institute of Fundamental Research.\n\nWe thank the ACE EPAM, ULEIS, SWEP AM and MAG instrument teams and the ACE Science Center for\nproviding ACE data. The SOHO CME catalog used in this study was generated and maintained by NASA\nand The Catholic University of America in cooperation with the Naval Research Laboratory. GOES data\nwere provided by the National Geophysical Data Center.\n\nPublished - Stone_2005p315.pdf
", "abstract": "We report multispacecraft measurements of solar energetic particle (SEP) events using Nozomi and ACE.\nDuring July 1998 to April 2002, while Nozomi was cruising toward Mars, instruments on both spacecraft\nobserved many SEP events associated with coronal mass ejections (CMEs) and interplanetary shocks\noriginating from different longitudes. These observations can reveal the longitudinal extent of CME-driven\nshocks and the accelerated particle populations. We use proton and electron data extending from ~40keV to\n~1 MeV measured with the EIS instrument on NOZOMI and the ULEIS and EPAM instruments on ACE.\nACE and Nozomi observed a consistent rate of proton events. In spite of their large longitudinal separation\nmany events were simultaneously observed by ACE and NOZOMI. Four examples of individual events have\nbeen studied with hourly averaged data. On March 29, 2000, Nozomi observed an event following a CME\non the backside of the Sun. In the July 14, 2000 and April 21, 2002 events, both spacecraft observed the\nsame SEP event from different longitudes, resulting in different intensity time profiles.", "date": "2005", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20140905-104551897", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140905-104551897", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "Stone_2005p315.pdf", "url": "https://authors.library.caltech.edu/records/f3btt-8fh63/files/Stone_2005p315.pdf" }, "pub_year": "2005", "author_list": "Miyasaka, H.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/24xsh-mnk44", "eprint_id": 49093, "eprint_status": "archive", "datestamp": "2023-08-19 15:05:47", "lastmod": "2023-10-17 21:07:53", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "High Energy Ionic Charge State Composition in the October/November 2003 and January 20,2005 SEP Events", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2005 Tata Institute of Fundamental Research.\n\n\nWe thank Joe Mazur of Aerospace Corp. for making SAMPEX data available for the 20 Jan. 2005 event.\nThis work was supported in part by NASA grant NASG5-8877.\n\nPublished - Stone_2005p99.pdf
", "abstract": "The ionic charge states of solar energetic particles (SEPs) probe source-material temperatures and\nacceleration and transport conditions. The MAST instrument on SAMPEX measures SEP ionic charge states\nat energies greater than ~15 MeV/nuc and at iron energies up to ~90 MeV/nuc using the geomagnetic filter\ntechnique. Charge state measurements for large gradual SEP events by MAST and by other experiments\nsuggest that event-to-event variations in the mean charge states of abundant elements are correlated with\nabundance ratios (e.g. Fe/O). We present charge state measurements for the October/November 2003 events\nthat suggest different source material temperatures for these events. We also present charge state\nmeasurements for the January 20, 2005 event, which contrasts with the previously demonstrated Q(Fe) vs.\nFe/O correlation. In this event solar and SEP data indicate that the first high-energy particles left the Sun\nwhen the CME shock was ~ 1.5 solar radii above the solar surface. At this altitude charge-equilibration\ncalculations and the observed mean charge state of +12 for Fe imply that <90 seconds were available to\naccelerate and release the particles. These observations therefore present a serious challenge to SEP\nacceleration models.", "date": "2005", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20140902-093235213", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140902-093235213", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NASG5-8877" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "Stone_2005p99.pdf", "url": "https://authors.library.caltech.edu/records/24xsh-mnk44/files/Stone_2005p99.pdf" }, "pub_year": "2005", "author_list": "Labrador, A. W.; Leske, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/rjp8x-6vy15", "eprint_id": 56408, "eprint_status": "archive", "datestamp": "2023-08-19 15:07:15", "lastmod": "2023-10-23 15:22:49", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Haggerty-D-K", "name": { "family": "Haggerty", "given": "D. K." }, "orcid": "0000-0001-6395-8943" }, { "id": "Looper-M-D", "name": { "family": "Looper", "given": "M. D." } }, { "id": "Vourlidas-A", "name": { "family": "Vourlidas", "given": "A." }, "orcid": "0000-0002-8164-5948" }, { "id": "Desai-M-I", "name": { "family": "Desai", "given": "M. I." }, "orcid": "0000-0002-7318-6008" }, { "id": "Giacalone-J", "name": { "family": "Giacalone", "given": "J." } }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mazur-J-E", "name": { "family": "Mazur", "given": "J. E." } } ] }, "title": "What Fraction of the Kinetic Energy of Coronal Mass Ejections goes into Accelerating Solar Energetic Particles?", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright TATA Institute of Fundamental Research\n\nThia work was supported by NASA under grant NNG04GBS5G, NN004088G, and NAGS-12929.\n\nPublished - 2005-16.pdf
", "abstract": "The largest solar energetic particle (SEP) events are thought to be accelerated by shocks driven by fast\ncoronal mass ejections (CMEs). We compare measurements of the energy content of large SEP events from 1998 to 2003 to the kinetic energy of the associated CMEs to study the efficiency of this process. Using CME data from SOHO and SEP data from ACE, SAMPEX, and GOES for a total of 17 events, we find that the ratio of the SEP to CME kinetic energies ranges from-0.1% to-20%, with the largest SEP events giving an average SEP/CME kinetic-energy ratio of -10%. Evidently shock acceleration is a relatively efficient\nprocess in these events. It is interesting that a similar efficiency is derived for cosmic-ray acceleration by\nsupernova shocks.", "date": "2005", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20150407-081202469", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150407-081202469", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG04GBS5G" }, { "agency": "NASA", "grant_number": "NN004088G" }, { "agency": "NASA", "grant_number": "NAG5-12929" } ] }, "other_numbering_system": { "items": [ { "id": "2005-16", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Acharya-B", "name": { "family": "Acharya", "given": "B." } }, { "id": "Gupta-S", "name": { "family": "Gupta", "given": "S." } }, { "id": "Jain-A", "name": { "family": "Jain", "given": "Atul" } }, { "id": "Karthikeyan-S", "name": { "family": "Karthikeyan", "given": "S." } }, { "id": "Morris-S", "name": { "family": "Morris", "given": "S." } }, { "id": "Tonwar-S", "name": { "family": "Tonwar", "given": "S." } } ] }, "primary_object": { "basename": "2005-16.pdf", "url": "https://authors.library.caltech.edu/records/rjp8x-6vy15/files/2005-16.pdf" }, "pub_year": "2005", "author_list": "Mewaldt, R. A.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/sfk56-mw648", "eprint_id": 56418, "eprint_status": "archive", "datestamp": "2023-08-19 15:07:20", "lastmod": "2023-10-23 15:23:18", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Smith-C-W", "name": { "family": "Smith", "given": "C.W." } }, { "id": "Skoug-R-M", "name": { "family": "Skoug", "given": "R. M." } }, { "id": "Ho-George-C", "name": { "family": "Ho", "given": "G. C." } }, { "id": "Szabo-A", "name": { "family": "Szabo", "given": "A." } } ] }, "title": "Energetic Particle Responses to Interplanetary Shocks Observed by ACE", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright TATA Institute of Fundamental Research\n\nThis work was supported by NASA at the Caltech (under grant NAG5-12492), UNH, JHUAPL, LANL, and NASA/GSFC. The authors thank J.C. Kasper for providing shock key parameters and ongoing discussions.\n\nPublished - 2005-19.pdf
", "abstract": "At very strong shock passages, protons (and other ions) may be accelerated at or near a spacecraft resulting in substantial particle intensities increases. Such events may be a significant space weather hazard, yet we are still unable to accurately forecast their arrival time or the magnitude of the particle increase. Here, we classify the >10 MeV proton response (observed by ACE/SIS) to passing shocks (identified by ACE/MAG, ACE/SWEPAM, SOHO/PM), examine heavy ion properties, and relate them to the measured shock parameters in an effort to further our understanding of these events and our ability to predict them.", "date": "2005", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20150407-093612837", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150407-093612837", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-12492" } ] }, "other_numbering_system": { "items": [ { "id": "2005-19", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Acharya-B", "name": { "family": "Acharya", "given": "B." } }, { "id": "Gupta-S", "name": { "family": "Gupta", "given": "S." } }, { "id": "Jain-A", "name": { "family": "Jain", "given": "Atul" } }, { "id": "Karthikeyan-S", "name": { "family": "Karthikeyan", "given": "S." } }, { "id": "Morris-S", "name": { "family": "Morris", "given": "S." } }, { "id": "Tonwar-S", "name": { "family": "Tonwar", "given": "S." } } ] }, "primary_object": { "basename": "2005-19.pdf", "url": "https://authors.library.caltech.edu/records/sfk56-mw648/files/2005-19.pdf" }, "pub_year": "2005", "author_list": "Cohen, C. M. S.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/bfcd4-0xy36", "eprint_id": 49164, "eprint_status": "archive", "datestamp": "2023-08-19 15:05:51", "lastmod": "2023-10-17 21:11:05", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Intensity Gradients of Anomalous Cosmic Rays Between 1 AU and Voyager During Solar Cycle 23", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2005 Tata Institute of Fundamental Research.\n\nThis work was supported by NASA at Caltech (under grants NAG5-6912 and NAS7-03001), JPL, and GSFC.\nWe acknowledge the Ulysses Data System for COSPIN/LET data and the National Science Foundation (grant\nATM-9912341) for Climax neutron monitor data.\n\nPublished - Stone_2005p113.pdf
", "abstract": "Using ACE/SIS data we obtain measurements of the variation of the anomalous cosmic ray (ACR) O intensity\nat 1 AU throughout the solar cycle, including periods near solar maximum. After being suppressed by a factor\nof ~100 or more from 2001 through 2003 during solar maximum, ACR intensities are once again recovering\nat 1 AU, but their intensities are lower relative to higher rigidity galactic cosmic rays (GCRs) than they were\nduring entry into solar maximum in 1998-2000. Comparison of the 1 AU ACR and GCR time variations with\nthose measured by both Voyager spacecraft in the outer heliosphere shows that both ACR and GCR large-scale\nradial gradients are greater at solar maximum than at solar minimum, and that the ACR radial gradients are\nmuch larger than those of the GCRs, becoming very large inside of ~5 AU.", "date": "2005", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20140903-072308449", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140903-072308449", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" }, { "agency": "NASA", "grant_number": "NAS7-03001" }, { "agency": "JPL" }, { "agency": "Goddard Space Flight Center (GSFC)" } ] }, "other_numbering_system": { "items": [ { "id": "2005-23", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "Stone_2005p113.pdf", "url": "https://authors.library.caltech.edu/records/bfcd4-0xy36/files/Stone_2005p113.pdf" }, "pub_year": "2005", "author_list": "Leske, R. A.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/x6jf7-4jd08", "eprint_id": 25086, "eprint_status": "archive", "datestamp": "2023-08-19 15:02:41", "lastmod": "2024-01-13 05:22:44", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Ness-N-F", "name": { "family": "Ness", "given": "Norman F." } }, { "id": "Burlaga-L-F", "name": { "family": "Burlaga", "given": "Leonard F." }, "orcid": "0000-0002-5569-1553" }, { "id": "Acu\u00f1a-M-H", "name": { "family": "Acu\u00f1a", "given": "Mario H." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "Edward C." }, "orcid": "0000-0002-2010-5462" }, { "id": "McDonald-F-B", "name": { "family": "McDonald", "given": "Frank B." } } ] }, "title": "Search for the Heliospheric Termination Shock (TS) and Heliosheath (HS)", "ispublished": "unpub", "full_text_status": "public", "keywords": "Interplanetary Magnetic Fields, Cosmic Rays, Solar Wind Plasma, Shock Waves, Turbulence\nsolar wind, plasma shock waves, interplanetary magnetic fields, cosmic rays", "note": "\u00a9 2005 American Institute of Physics. \n\nIssue Date: 1 August 2005. \n\nWe appreciate the contributions of the MAG team members at NASA-GSFC and the CRS team at University of Maryland, GSFC and Caltech in the conduct of these studies and the technical support staff at NASA-GSFC. Norman F. Ness is supported, in part, by NASA-GSFC grant NNG04GB71G to CUA.\n\nPublished - NESaipcp05.pdf
", "abstract": "Voyager 1 continues to measure the very distant Heliospheric Magnetic Field (HMF) beyond 95 AU at ~35 North latitude. The MAG instrument data covers more than a full 22 years solar magnetic cycle. The magnitude of the observed HMF is well described, on average, by Parker's Archimedean spiral structure if due account is made for time variations of the source field strength and solar wind velocity. The V1 magnetic field observations do not provide any evidence for a field increase associated with entry into a subsonic solar wind region, such as the heliosheath is expected to be, nor an exit from this regime. We see no evidence for crossing of the Termination Shock (TS) as has been reported at ~85 AU by the LECP instrument. Merged Interaction Regions are identified by an increased HMF and associated decreases in the flux of >70 MeV/nuc cosmic rays which are then followed by a flux recovery. This CR-B relationship has been identified in V1 data and studied since 1982 when V1 was at 11 AU. The variance of HMF, a direct measure of the energy**1/2 in the HMF fluctuations, shows no significant changes associated with the alleged TS crossings in 2002\u20132003. Thus, the absence of any HMF increase at the entry into the heliosheath appears not to be due to the onset of mesoscale turbulence as proposed by Fisk. The TS has yet to be directly observed in-situ by the V1 MAG experiment in data through 2003.", "date": "2005", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, N.Y.", "pagerange": "267-272", "id_number": "CaltechAUTHORS:20110825-083402060", "isbn": "0-7354-0268-X", "book_title": "Physics of Collisionless Shocks", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110825-083402060", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG04GB71G" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Li-Gang", "name": { "family": "Li", "given": "G." } }, { "id": "Zank-G-P", "name": { "family": "Zank", "given": "G. P." } }, { "id": "Russell-C-T", "name": { "family": "Russell", "given": "C. T." } } ] }, "doi": "10.1063/1.2032707", "primary_object": { "basename": "NESaipcp05.pdf", "url": "https://authors.library.caltech.edu/records/x6jf7-4jd08/files/NESaipcp05.pdf" }, "pub_year": "2005", "author_list": "Ness, Norman F.; Burlaga, Leonard F.; et el." }, { "id": "https://authors.library.caltech.edu/records/rhfjf-6s679", "eprint_id": 48997, "eprint_status": "archive", "datestamp": "2023-08-19 15:05:30", "lastmod": "2023-10-17 20:35:56", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Extended Energy Elemental Spectrum Measurements with the Solar Isotope Spectrometer (SIS)", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2005 Tata Institute of Fundamental Research.\n\nThis work was supported by NASA grant NAG5-6912.\n\nPublished - Stone_2005p103.pdf
", "abstract": "The Solar Isotope Spectrometer (SIS) aboard the Advanced Composition Explorer (ACE) has been\nmeasuring solar energetic particle abundances since ACE was launched in August 1997. SIS is a silicon\ndetector telescope that identifies charged particles via the multiple dE/dx vs. total energy technique, and to\ndate, most measurements reported by SIS have been limited in energy to those particles that stop in the\ninstrument. In this paper, we will summarize the multiple dE/dx technique used to identify particles that\npenetrate through the bottom of SIS, extending the energy ranges for elemental abundance measurements.\nIn preliminary analysis, the upper energy limit for oxygen has been extended from ~90 MeV/nuc for\nstopping particles to ~300 MeV/nuc for penetrating particles, and the upper energy limit for iron has been\nextended from ~168 MeV/nuc to ~500 MeV/nuc. We apply this technique to SIS measurements of large SEP\nevents, such as the Nov. 6, 1997 event and the recent Jan. 20, 2005 event, to extend the measured spectra, to\nlook for evidence of spectral breaks.", "date": "2005", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20140827-135112110", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140827-135112110", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "2005-12", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "Stone_2005p103.pdf", "url": "https://authors.library.caltech.edu/records/rhfjf-6s679/files/Stone_2005p103.pdf" }, "pub_year": "2005", "author_list": "Labrador, A. W.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/k48ag-0n403", "eprint_id": 84196, "eprint_status": "archive", "datestamp": "2023-08-19 14:28:02", "lastmod": "2024-01-14 19:16:11", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Koglin-J-E", "name": { "family": "Koglin", "given": "Jason E." } }, { "id": "Chen-C-M-Hubert", "name": { "family": "Chen", "given": "C. M. Hubert" } }, { "id": "Chonko-J-C", "name": { "family": "Chonko", "given": "Jim C." } }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "Finn E." }, "orcid": "0000-0001-5679-1946" }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "William W." } }, { "id": "Decker-T-R", "name": { "family": "Decker", "given": "Todd R." } }, { "id": "Hailey-C-J", "name": { "family": "Hailey", "given": "Charles J." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Jensen-C-P", "name": { "family": "Jensen", "given": "Carsten P." } }, { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "Kristin K." }, "orcid": "0000-0003-1252-4891" }, { "id": "Pivovaroff-M-J", "name": { "family": "Pivovaroff", "given": "Michael J." } }, { "id": "Stern-M", "name": { "family": "Stern", "given": "Marcela" } }, { "id": "Windt-D-L", "name": { "family": "Windt", "given": "David L." } }, { "id": "Ziegler-E", "name": { "family": "Ziegler", "given": "Eric" } } ] }, "title": "Hard x-ray optics: from HEFT to NuSTAR", "ispublished": "unpub", "full_text_status": "public", "keywords": "Hard X-ray telescope, X-ray optics, segmented glass, thermally-slumped, HEFT, NuSTAR", "note": "\u00a9 2004 SPIE. \n\nSpecial Thanks to the staff at ESRF for their assistance with the high-energy measurements. This work is supported by a NASA grant to Columbia University: NAG5-5260 (Thermally Formed Optics for X-Ray and Gamma-Ray Astronomy), and by NASA grants to the California Institute of Technology with sub-awards to Columbia: Caltech No. 1019776 (High Energy Focusing Telescope) and Caltech No. 1046806 (Critical Technologies for the Constellation Hard X-Ray Telescope).\n\nPublished - 856.pdf
", "abstract": "Focusing optics are now poised to dramatically improve the sensitivity and angular resolution at energies above 10 keV to levels that were previously unachievable by the past generation of background limited collimated and coded-aperture instruments. Active balloon programs (HEFT), possible Explorer-class satellites (NuSTAR - currently under Phase A study), and major X-ray observatories (Con-X HXT) using focusing optics will play a major role in future observations of a wide range of objects including young supernova remnants, active galactic nuclei, and galaxy clusters. These instruments call for low cost, grazing incidence optics coated with depth-graded multilayer films that can be nested to achieve large collecting areas. Our approach to building such instruments is to mount segmented mirror shells with our novel error-compensating, monolithic assembly and alignment (EMAAL) procedure. This process involves constraining the mirror segments to successive layers of graphite rods that are precisely machined to the required conic-approximation Wolter-I geometry. We present results of our continued development of thermally formed glass substrates that have been used to build three HEFT telescopes and are proposed for NuSTAR. We demonstrate how our experience in manufacturing complete HEFT telescopes, as well as our experience developing higher performance prototype optics, will lead to the successful production of telescopes that meet the NuSTAR design goals.", "date": "2004-10-11", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "place_of_pub": "Bellingham, WA", "pagerange": "856-867", "id_number": "CaltechAUTHORS:20180109-134841660", "isbn": "9780819454201", "book_title": "UV and Gamma-Ray Space Telescope Systems", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180109-134841660", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-5260" }, { "agency": "NASA", "grant_number": "1019776" }, { "agency": "NASA", "grant_number": "1046806" } ] }, "local_group": { "items": [ { "id": "NuSTAR" }, { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Hasinger-G", "name": { "family": "Hasinger", "given": "G\u00fcnther" } }, { "id": "Turner-M-J-L", "name": { "family": "Turner", "given": "Martin J. L." } } ] }, "doi": "10.1117/12.552470", "primary_object": { "basename": "856.pdf", "url": "https://authors.library.caltech.edu/records/k48ag-0n403/files/856.pdf" }, "pub_year": "2004", "author_list": "Koglin, Jason E.; Chen, C. M. Hubert; et el." }, { "id": "https://authors.library.caltech.edu/records/bp0e9-xtq81", "eprint_id": 84248, "eprint_status": "archive", "datestamp": "2023-08-19 14:19:06", "lastmod": "2024-01-14 19:30:21", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Oonuki-Kousuke", "name": { "family": "Oonuki", "given": "Kousuke" } }, { "id": "Inoue-Hokuto", "name": { "family": "Inoue", "given": "Hokuto" } }, { "id": "Nakazawa-Kazuhiro", "name": { "family": "Nakazawa", "given": "Kazuhiro" } }, { "id": "Mitani-Takefumi", "name": { "family": "Mitani", "given": "Takefumi" } }, { "id": "Tanaka-Takaaki", "name": { "family": "Tanaka", "given": "Takaaki" } }, { "id": "Takahashi-Tadayuki", "name": { "family": "Takahashi", "given": "Tadayuki" } }, { "id": "Chen-C-M-Hubert", "name": { "family": "Chen", "given": "C. M. H." } }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "Walter R." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" } ] }, "title": "Development of uniform CdTe pixel detectors based on Caltech ASIC", "ispublished": "unpub", "full_text_status": "public", "keywords": "CdTe, CZT, uniformity, hard X-ray detector, pixel detector, stud bump bonding, imaging spectrometer", "note": "\u00a9 2004 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\n29 September 2004. \n\nThe authors would like to thank M. Onishi for his dedicated help throughout the detector development.\n\nPublished - 218.pdf
", "abstract": "We have developed a large CdTe pixel detector with dimensions of 23.7 x 13.0 mm^2 and a pixel size of 448 x 448 \u03bcm^2. The detector is based on recent technologies of an uniform CdTe single crystal, a two-dimensional ASIC, and stud bump-bonding to connect pixel electrodes on the CdTe surface to the ASIC. Good spectra are obtained from 1051 pixels out of total 1056 pixels. When we operate the detector at -50\u00b0C, the energy resolution is 0.67 keV and 0.99 keV at 14 keV and 60 keV, respectively. Week-long stability of the detector is confirmed at operating temperatures of both -50\u00b0C and -20\u00b0C. The detector also shows high uniformity: the peak positions for all pixels agree to within 0.82%, and the average of the energy resolution is 1.04 keV at a temperature of -50\u00b0C. When we normalized the peak area by the total counts detected by each pixel, a variation of 2.1% is obtained.", "date": "2004-09-29", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "218-228", "id_number": "CaltechAUTHORS:20180111-080306983", "isbn": "0-8194-5433-8", "book_title": "High-Energy Detectors in Astronomy", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180111-080306983", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Holland-A-D", "name": { "family": "Holland", "given": "Andrew D." } } ] }, "doi": "10.1117/12.552598", "primary_object": { "basename": "218.pdf", "url": "https://authors.library.caltech.edu/records/bp0e9-xtq81/files/218.pdf" }, "pub_year": "2004", "author_list": "Oonuki, Kousuke; Inoue, Hokuto; et el." }, { "id": "https://authors.library.caltech.edu/records/epkgj-55e79", "eprint_id": 12271, "eprint_status": "archive", "datestamp": "2023-08-22 02:27:59", "lastmod": "2024-01-12 23:30:37", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hartmann-D-H", "name": { "family": "Hartmann", "given": "D. H." } }, { "id": "Grindlay-J", "name": { "family": "Grindlay", "given": "J." } }, { "id": "Hong-Jaesub", "name": { "family": "Hong", "given": "J. S." } }, { "id": "Loeb-A", "name": { "family": "Loeb", "given": "A." }, "orcid": "0000-0003-4330-287X" }, { "id": "Blandford-R-D", "name": { "family": "Blandford", "given": "R." }, "orcid": "0000-0002-1854-5506" }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "W." } }, { "id": "Fishman-J", "name": { "family": "Fishman", "given": "J." } }, { "id": "Kouveliotou-C", "name": { "family": "Kouveliotou", "given": "C." }, "orcid": "0000-0003-1443-593X" }, { "id": "Gehrels-N", "name": { "family": "Gehrels", "given": "N." } }, { "id": "Band-D", "name": { "family": "Band", "given": "D." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "F." }, "orcid": "0000-0003-2992-8024" }, { "id": "Woosley-S-E", "name": { "family": "Woosley", "given": "S. E." } } ] }, "title": "Observing GRBs with EXIST", "ispublished": "unpub", "full_text_status": "public", "keywords": "gamma-ray sources (astronomical), X-ray imaging, astronomical telescopes, star formation, supernovae, novae, astronomical atlases, astronomical catalogues, black holes", "note": "\u00a9 2004 American Institute of Physics. \n\nIssue Date: 28 September 2004.\n\nPublished - HARaipcp04.pdf
", "abstract": "We describe the Energetic X-ray Imaging Survey Telescope EXIST, designed to carry out a sensitive all-sky survey in the 10 keV \u2013 600 keV band. The primary goal of EXIST is to find black holes in the local and distant universe. EXIST also traces cosmic star formation via gamma-ray bursts and gamma-ray lines from radioactive elements ejected by supernovae and novae.", "date": "2004-09-28", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "677-680", "id_number": "CaltechAUTHORS:HARaipcp04", "isbn": "0-7354-0208-6", "book_title": "Gamma-Ray Bursts: 30 Years of Discovery: Gamma-Ray Burst Symposium, Sante Fe, New Mexico, 8-12 September 2003", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:HARaipcp04", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "name": { "family": "Fennimore", "given": "E. E." } }, { "name": { "family": "Galassi", "given": "M." } } ] }, "doi": "10.1063/1.1810933", "primary_object": { "basename": "HARaipcp04.pdf", "url": "https://authors.library.caltech.edu/records/epkgj-55e79/files/HARaipcp04.pdf" }, "pub_year": "2004", "author_list": "Hartmann, D. H.; Grindlay, J.; et el." }, { "id": "https://authors.library.caltech.edu/records/rn5wk-ymk92", "eprint_id": 25159, "eprint_status": "archive", "datestamp": "2023-08-19 14:15:31", "lastmod": "2024-01-13 05:23:14", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "McDonald-F-B", "name": { "family": "McDonald", "given": "F. B." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Heikkila-B-C", "name": { "family": "Heikkila", "given": "B. C." } }, { "id": "Lal-N", "name": { "family": "Lal", "given": "N." } }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "The Energetic Particle Populations of the Distant\n Heliosphere", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar wind, galactic cosmic rays, plasma shock waves, solar cosmic ray particles", "note": "\u00a9 2004 American Institute of Physics.\nIssue Date: 15 September 2004.\n\nPublished - MCDaipcp04.pdf
", "abstract": "In late 2003 as Voyager 1 moves beyond 90 AU in the recovery phase of solar cycle 23, the effects of the termination shock (TS) and the heliosheath on particle transport are becoming more evident. There are\nnow detectable fluxes of 2.5 \u2013 70 MeV electrons but at low intensity levels that suggest they are heavily modulated in the heliosheath. The modulation of galactic and anomalous cosmic rays is significant but much smaller than observed at 1 AU. At V1 a large increase of MeV ions was observed with a flat energy spectra which persisted over a period of 6.5 months. A second event has now been in progress for some eight months. These ions appear to originate at the TS. At V2, 17 AU behind V1, there are a series of 8 increases of low energy ions that occur approximately every 140 days starting in late 2000. Many of these increases can be related to specific periods of high solar activity that occurred some 6 months earlier.", "date": "2004-09-15", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "139-149", "id_number": "CaltechAUTHORS:20110830-093038896", "isbn": "0-7354-0199-3", "book_title": "Physics of the Outer Heliosphere", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110830-093038896", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Florinski-V", "name": { "family": "Florinski", "given": "Vladimir" } }, { "id": "Pogorelov-N-V", "name": { "family": "Pogorelov", "given": "Nikolai V." } }, { "id": "Zank-G-P", "name": { "family": "Zank", "given": "G. P." } } ] }, "doi": "10.1063/1.1809511", "primary_object": { "basename": "MCDaipcp04.pdf", "url": "https://authors.library.caltech.edu/records/rn5wk-ymk92/files/MCDaipcp04.pdf" }, "pub_year": "2004", "author_list": "McDonald, F. B.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/44axx-tcn70", "eprint_id": 25538, "eprint_status": "archive", "datestamp": "2023-08-19 14:15:35", "lastmod": "2024-01-13 05:23:53", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Scott-L-M", "name": { "family": "Scott", "given": "L. M." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Cosmic-Ray Spectra in Interstellar Space", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar wind, cosmic ray energy spectra, interstellar matter, galactic cosmic rays", "note": "\u00a9 2004 American Institute of Physics. Issue Date: 15 September 2004. This work was supported by NASA at Caltech (under grants NAG5-6912 and NAG5-12929), JPL, Washington University, and Goddard Space Flight Center.\n\nPublished - MEWaipcp04.pdf
", "abstract": "At energies below ~300 MeV/nuc our knowledge of cosmic-ray spectra outside the heliosphere is obscured by the energy loss that cosmic rays experience during transport through the heliosphere into the inner solar system. This paper compares measurements of secondary electron-capture isotope abundances and cosmic-ray spectra from ACE with a simple model of interstellar propagation and solar modulation in order to place limits on the range of interstellar spectra that are compatible with both sets of data.", "date": "2004-09-15", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "127-132", "id_number": "CaltechAUTHORS:20111004-094736990", "isbn": "0-7354-0199-3", "book_title": "Physics of the outer heliosphere", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111004-094736990", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" }, { "agency": "NASA", "grant_number": "NAG5-12929" }, { "agency": "JPL" }, { "agency": "Washington University" }, { "agency": "Goddard Space Flight Center" } ] }, "other_numbering_system": { "items": [ { "id": "2004-01", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Florinski-V", "name": { "family": "Florinski", "given": "Vladimir" } }, { "id": "Pogorelov-N-V", "name": { "family": "Pogorelov", "given": "Nikolai V." } }, { "id": "Zank-G-P", "name": { "family": "Zank", "given": "G. P." } } ] }, "doi": "10.1063/1.1809509", "primary_object": { "basename": "MEWaipcp04.pdf", "url": "https://authors.library.caltech.edu/records/44axx-tcn70/files/MEWaipcp04.pdf" }, "pub_year": "2004", "author_list": "Mewaldt, R. A.; Wiedenbeck, M. E.; et el." }, { "id": "https://authors.library.caltech.edu/records/5ahx5-pdg83", "eprint_id": 84205, "eprint_status": "archive", "datestamp": "2023-08-19 13:05:40", "lastmod": "2024-01-14 19:16:23", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Gunderson-K-S", "name": { "family": "Gunderson", "given": "Kurt" } }, { "id": "Chen-C-M-Hubert", "name": { "family": "Chen", "given": "C. M. Hubert" } }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "Finn" }, "orcid": "0000-0001-5679-1946" }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "William" } }, { "id": "Decker-T-A", "name": { "family": "Decker", "given": "Todd" } }, { "id": "Hailey-C-J", "name": { "family": "Hailey", "given": "Charles" } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona" }, "orcid": "0000-0003-2992-8024" }, { "id": "McLean-R", "name": { "family": "McLean", "given": "Ryan" } }, { "id": "Wurtz-R-E", "name": { "family": "Wurtz", "given": "Ron" } }, { "id": "Ziock-K", "name": { "family": "Ziock", "given": "Klaus" } } ] }, "title": "Ground performance of the High-Energy Focusing Telescope (HEFT) attitude control system", "ispublished": "unpub", "full_text_status": "public", "keywords": "Balloons, attitude control systems, X-rays", "note": "\u00a9 2004 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nMechanical construction of the instrument was supported by R. Hill and D. Carr of LLNL. The electronics were designed by D. Deane of LLNL. This work was performed under the auspices of the U.S. Department of Energy by the University of California, Lawrence Livermore National Laboratory under Contract No. W-7405-ENG-48.\n\nPublished - 158.pdf
", "abstract": "The High Energy Focusing Telescope (HEFT) is a balloon-borne, hard x-ray/gamma ray (20-70 keV) astronomical experiment. HEFT's 10 arcminute field of view and 1 arcminute angular resolution place challenging demands on its attitude control system (ACS). A microprocessor-based ACS has been developed to manage target acquisition and sidereal tracking. The ACS consists of a variety of sensors and actuators, with provisions for 2-way ground communication, all controlled by an on-board computer. Ground based pointing performance measurements indicate 1\u03c3 jitter of 7\" and gyro drift rates of <1\" s^(-1). Jitter is expected to worsen in the flight environment, but star tracker data are expected to reduce drift rates significantly, enabling a predicted 1\u03c3 absolute attitude determination of \u22654.7\". HEFT is scheduled for flight in Spring 2004.", "date": "2004-02-03", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "place_of_pub": "Bellingham, WA", "pagerange": "158-168", "id_number": "CaltechAUTHORS:20180109-153135465", "isbn": "9780819450388", "book_title": "X-Ray and Gamma-Ray Instrumentation for Astronomy XIII", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180109-153135465", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Department of Energy (DOE)", "grant_number": "W-7405-ENG-48" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Flanagan-K-A", "name": { "family": "Flanagan", "given": "Kathryn A." } }, { "id": "Siegmund-O-H-W", "name": { "family": "Siegmund", "given": "Oswald H. W." } } ] }, "doi": "10.1117/12.513439", "primary_object": { "basename": "158.pdf", "url": "https://authors.library.caltech.edu/records/5ahx5-pdg83/files/158.pdf" }, "pub_year": "2004", "author_list": "Gunderson, Kurt; Chen, C. M. Hubert; et el." }, { "id": "https://authors.library.caltech.edu/records/t02w2-sz821", "eprint_id": 84206, "eprint_status": "archive", "datestamp": "2023-08-19 13:00:36", "lastmod": "2024-01-14 19:16:25", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Windt-D-L", "name": { "family": "Windt", "given": "D. L." } }, { "id": "Donguy-Soizik", "name": { "family": "Donguy", "given": "S." } }, { "id": "Hailey-C-J", "name": { "family": "Hailey", "given": "C. J." } }, { "id": "Koglin-J-E", "name": { "family": "Koglin", "given": "J." } }, { "id": "Honkimaki-V", "name": { "family": "Honkimaki", "given": "V." } }, { "id": "Ziegler-E", "name": { "family": "Ziegler", "given": "E." } }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "F. E." }, "orcid": "0000-0001-5679-1946" }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "F. A." }, "orcid": "0000-0003-2992-8024" } ] }, "title": "Optical constants for hard x-ray multilayers over the energy range E = 35 - 180 keV", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2004 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nThis research was sponsored in part by a grant from NASA.\n\nPublished - 35.pdf
", "abstract": "We have determined experimentally optical constants for eight thin film materials that can be used in hard X-ray multilayer coatings. Thin film samples of Ni_(.97)V_(.03), Mo, W, Pt, C, B_4C, Si and SiC were deposited by magnetron sputtering onto superpolished optical flats. Optical constants were determined from fits to reflectance-vs-incidence angle measurements made using synchrotron radiation over the energy range E=35-180 keV. We have also measured the X-ray reflectance of a prototype W/SiC multilayer coating over the energy range E=35-100 keV, and we compare the measured reflectance with a calculation using the newly derived optical constants.", "date": "2004-01-29", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "id_number": "CaltechAUTHORS:20180109-153135729", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180109-153135729", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Citterio-O", "name": { "family": "Citterio", "given": "Oberto" } }, { "id": "O'Dell-S-L", "name": { "family": "O'Dell", "given": "Stephen L." } } ] }, "doi": "10.1117/12.505886", "primary_object": { "basename": "35.pdf", "url": "https://authors.library.caltech.edu/records/t02w2-sz821/files/35.pdf" }, "pub_year": "2004", "author_list": "Windt, D. L.; Donguy, S.; et el." }, { "id": "https://authors.library.caltech.edu/records/375bk-rbk17", "eprint_id": 88379, "eprint_status": "archive", "datestamp": "2023-08-19 13:00:40", "lastmod": "2024-01-14 20:31:56", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hailey-C-J", "name": { "family": "Hailey", "given": "Charles J." } }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "Finn E." }, "orcid": "0000-0001-5679-1946" }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "William W." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Koglin-J-E", "name": { "family": "Koglin", "given": "Jason E." } }, { "id": "Petre-R", "name": { "family": "Petre", "given": "Robert" } }, { "id": "Yu-Haitao", "name": { "family": "Yu", "given": "Haitao" } }, { "id": "Zhang-W-W", "name": { "family": "Zhang", "given": "William W." }, "orcid": "0000-0002-1426-9698" } ] }, "title": "Fabrication and performance of Constellation-X hard x-ray telescope prototype optics using segmented glass", "ispublished": "unpub", "full_text_status": "public", "keywords": "Hard X-ray telescope, Constellation-X, X-ray optics, segmented glass, thermally-slumped", "note": "\u00a9 2004 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nThis work is supported by NASA grants to Columbia University: Thermally Formed Optics for X-ray and Gamma-ray Astronomy (NAG5-5260), High Energy Focusing Telescope (CalTech subaward 1019776) and Critical Technologies for the Constellation-X Hard X-ray Telescope (CalTech subaward 046806).\n\nPublished - 90.pdf
", "abstract": "We report on the fabrication and performance of prototype optics for the Constellation-X hard X-ray telescope (HXT). The prototypes utilize segmented-glass optics. Multiple glass segments are combined to produce telescope shells. The shells are separated by and epoxied to graphite rods, and each layer of rods is precisely machined to match the required optical geometry of the corresponding glass shell. This error-compensating, monolithic assembly and alignment (EMAAL) procedure is novel. Two prototypes are described. The first used 10cm long thermally-slumped glass pieces produced by slumping into a concave mandrel with no subsequent replication. This prototype obtained 45\" (2-bounce HPD). The second prototype was the first attempt to mount epoxy-replicated, thermally-slumped glass optics using EMAAL. The latter prototype demonstrated our ability to produce and mount glass shells whose figure and performance are faithful representations of the original replication mandrel. The average performance was 45\", with the best replicated segment providing 33\" (2-bounce HPD) performance, consistent with the ~30\" measured with laser reflectometry and interferometry prior to mounting. Both these prototypes substantially exceeded the HXT requirement of 60\".", "date": "2004-01-29", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "90-99", "id_number": "CaltechAUTHORS:20180731-114052007", "isbn": "9780819450418", "book_title": "Optics for EUV, X-Ray, and Gamma-Ray Astronomy", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180731-114052007", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-5260" }, { "agency": "NASA", "grant_number": "1019776" }, { "agency": "NASA", "grant_number": "046806" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Citterio-O", "name": { "family": "Citterio", "given": "Oberto" } }, { "id": "O'Dell-S-L", "name": { "family": "O'Dell", "given": "Stephen L." } } ] }, "doi": "10.1117/12.506334", "primary_object": { "basename": "90.pdf", "url": "https://authors.library.caltech.edu/records/375bk-rbk17/files/90.pdf" }, "pub_year": "2004", "author_list": "Hailey, Charles J.; Christensen, Finn E.; et el." }, { "id": "https://authors.library.caltech.edu/records/pdx64-3et45", "eprint_id": 84200, "eprint_status": "archive", "datestamp": "2023-08-19 13:00:31", "lastmod": "2024-01-14 19:16:15", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Koglin-J-E", "name": { "family": "Koglin", "given": "Jason E." } }, { "id": "Chen-C-M-Hubert", "name": { "family": "Chen", "given": "C. M. Hubert" } }, { "id": "Chonko-J", "name": { "family": "Chonko", "given": "James" } }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "Finn E." }, "orcid": "0000-0001-5679-1946" }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "William W." } }, { "id": "Decker-T-R", "name": { "family": "Decker", "given": "Todd R." } }, { "id": "Gunderson-K-S", "name": { "family": "Gunderson", "given": "Kurt S." } }, { "id": "Hailey-C-J", "name": { "family": "Hailey", "given": "Charles J." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Jensen-C-P", "name": { "family": "Jensen", "given": "Carsten P." } }, { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "Kristin K." }, "orcid": "0000-0003-1252-4891" }, { "id": "Stern-M", "name": { "family": "Stern", "given": "Marcela" } }, { "id": "Windt-D-L", "name": { "family": "Windt", "given": "David L." } }, { "id": "Yu-Haitao", "name": { "family": "Yu", "given": "Haitao" } }, { "id": "Ziegler-E", "name": { "family": "Ziegler", "given": "Eric" } } ] }, "title": "Production and calibration of the first HEFT hard x-ray optics module", "ispublished": "unpub", "full_text_status": "public", "keywords": "Hard X-ray telescope, X-ray optics, segmented glass, thermally-slumped", "note": "\u00a9 2004 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nThis technical progress described in this paper could not have been made without the expert and tireless work of our technical staff. Special Thanks to the staff at ESRF for their assistance with the high energy measurements. This work is supported by a NASA grant to Columbia University: NAG5-5260 (Thermally Formed Optics for X-Ray and Gamma-Ray Astronomy), and by NASA grants to the California Institute of Technology with sub-awards to Columbia: Caltech No. 1019776 (High Energy Focusing Telescope) and Caltech No. 1046806 (Critical Technologies for the Constellation Hard X-Ray Telescope).\n\nPublished - 100.pdf
", "abstract": "Complete hard X-ray optics modules are currently being produced for the High Energy Focusing Telescope (HEFT), a balloon born mission that will observe a wide range of objects including young supernova remnants, active galactic nuclei, and galaxy clusters at energies between 20 and 70 keV. Large collecting areas are achieved by tightly nesting layers of grazing incidence mirrors in a conic approximation Wolter-I design. The segmented layers are made of thermally-formed glass substrates coated with depth-graded multilayer films for enhanced reflectivity. Our novel mounting technique involves constraining these mirror segments to successive layers of precisely machined graphite spacers. We report the production and calibration of the first HEFT optics module.", "date": "2004-01-29", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "id_number": "CaltechAUTHORS:20180109-150940367", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180109-150940367", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-5260" }, { "agency": "NASA", "grant_number": "1019776" }, { "agency": "NASA", "grant_number": "1046806" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Citterio-O", "name": { "family": "Citterio", "given": "Oberto" } }, { "id": "O'Dell-S-L", "name": { "family": "O'Dell", "given": "Stephen L." } } ] }, "doi": "10.1117/12.506431", "primary_object": { "basename": "100.pdf", "url": "https://authors.library.caltech.edu/records/pdx64-3et45/files/100.pdf" }, "pub_year": "2004", "author_list": "Koglin, Jason E.; Chen, C. M. Hubert; et el." }, { "id": "https://authors.library.caltech.edu/records/8h5va-zg353", "eprint_id": 84207, "eprint_status": "archive", "datestamp": "2023-08-19 12:59:22", "lastmod": "2024-01-14 19:29:56", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Chen-C-M-Hubert", "name": { "family": "Chen", "given": "C. M. Hubert" } }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "Walter R." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Lin-Jiao-Y-Y", "name": { "family": "Lin", "given": "Jiao Y. Y." }, "orcid": "0000-0001-9233-0100" }, { "id": "Mao-Peter-H", "name": { "family": "Mao", "given": "Peter H." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "Stephen M." } } ] }, "title": "Characterization of the HEFT CdZnTe pixel detectors", "ispublished": "unpub", "full_text_status": "public", "keywords": "CdZnTe radiation detectors, conductive epoxy, flip-chip devices, indium bump-bonding, radiation detector circuits, sample and hold circuits, semiconductor device bonding, X-ray astronomy detectors", "note": "\u00a9 2004 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nThis research was supported by the NASA Space Science \"Supporting Research and Technology\" (SR&T) programme under Grant Number NAG5-5398. FAH was further supported by a Presidential Early Career Award, Grant Number NAG5-5322. JL was supported by the National Science Foundation under Grant Number DMR-020-4920. We are grateful for their support. We also thank Aleksey E Bolotnikov for sharing his invaluable experiences with CdZnTe detector testing. Jill Burnham, Branislav Kecman and John Klemic have played crucial roles in the fabrication and testing of the detectors.\n\nPublished - 9.pdf
", "abstract": "We have developed large format CdZnTe pixel detectors optimized for astrophysical applications. The detectors, designed for the High Energy Focusing Telescope (HEFT) balloon experiment, each consists of an array of 24x44 pixels, on a 498 \u03bcm pitch. Each of the anode segments on a CdZnTe sensor is bonded to a custom, low-noise application-specific integrated circuit (ASIC)optimized to achieve low threshold and good energy resolution. We have studied detectors fabricated by two different bonding methods and corresponding anode plane designs---the first detector has a steering electrode grid, and is bonded to the ASIC with indium bumps; the second detector has no grid but a narrower gap between anode contacts, and is bonded to the ASIC with conductive epoxy bumps and gold stud bumps in series. In this paper, we present results from detailed X-ray testing of the HEFT pixel detectors. This includes measurements of the energy resolution for both single-pixel and split-pixel events, and characterization of the effects of charge trapping, electrode biases and temperature on the spectral performance. Detectors from the two bonding methods are contrasted.", "date": "2004-01-20", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "id_number": "CaltechAUTHORS:20180109-153136001", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180109-153136001", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-5398" }, { "agency": "NASA", "grant_number": "NAG5-5322" }, { "agency": "NSF", "grant_number": "DMR-0204920" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Franks-L-A", "name": { "family": "Franks", "given": "Larry A." } }, { "id": "Burger-A", "name": { "family": "Burger", "given": "Arnold" } }, { "id": "James-R-B", "name": { "family": "James", "given": "Ralph B." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "Paul L." } } ] }, "doi": "10.1117/12.506075", "primary_object": { "basename": "9.pdf", "url": "https://authors.library.caltech.edu/records/8h5va-zg353/files/9.pdf" }, "pub_year": "2004", "author_list": "Chen, C. M. Hubert; Cook, Walter R.; et el." }, { "id": "https://authors.library.caltech.edu/records/9x7yk-fme62", "eprint_id": 27145, "eprint_status": "archive", "datestamp": "2023-08-19 11:58:55", "lastmod": "2024-01-13 05:42:55", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "The Coronal Isotopic Composition as Determined Using Solar Energetic Particles", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar corona, isotopes, solar wind", "note": "\u00a9 2003 American Institute of Physics.\nIssue Date: 2 September 2003. This work was supported by NASA at the California Institute of Technology (grant NAG5-6912), the Jet Propulsion Laboratory, and the Goddard Space Flight Center.\n\nPublished - LESaipcp03.pdf
", "abstract": "Solar energetic particles (SEPs), like the solar wind, provide a direct sample of the Sun. Although SEP abundances show a variable amount of mass fractionation, it is possible to develop methods of correcting for it in order to deduce the composition of the corona. Using high-resolution measurements from the Solar Isotope Spectrometer on the Advanced Composition Explorer, we have studied the isotopic composition of 10 abundant elements from C to Ni in 32 large SEP events from late 1997 to the end of 2001 at energies >15 MeV/nucleon. We show that various isotopic and elemental enhancements are correlated with each other, discuss the first order corrections used to account for the variability, and obtain estimated coronal abundances. We compare the coronal values and their uncertainties inferred from SEPs with those that are available from solar wind and meteoritic measurements and find generally good agreement. We include C and Ni isotopic abundances, for which no solar wind measurements have yet been reported.", "date": "2003-09-02", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "616-619", "id_number": "CaltechAUTHORS:20111010-143811077", "isbn": "0-7354-0148-9", "book_title": "Solar Wind Ten", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111010-143811077", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" }, { "agency": "JPL" }, { "agency": "Goddard Space Flight Center" } ] }, "other_numbering_system": { "items": [ { "id": "2003-57", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Velli-M", "name": { "family": "Velli", "given": "Marco" } }, { "id": "Bruno-R", "name": { "family": "Bruno", "given": "Roberto" } }, { "id": "Malara-F", "name": { "family": "Malara", "given": "Francesco" } } ] }, "doi": "10.1063/1.1618670", "primary_object": { "basename": "LESaipcp03.pdf", "url": "https://authors.library.caltech.edu/records/9x7yk-fme62/files/LESaipcp03.pdf" }, "pub_year": "2003", "author_list": "Leske, R. A.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/rv79x-v6c12", "eprint_id": 27486, "eprint_status": "archive", "datestamp": "2023-08-19 11:59:00", "lastmod": "2024-01-13 05:45:07", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Dwyer-J-R", "name": { "family": "Dwyer", "given": "J. R." } }, { "id": "Gold-R-E", "name": { "family": "Gold", "given": "R. E." } }, { "id": "Krimigis-S-M", "name": { "family": "Krimigis", "given": "S. M." }, "orcid": "0000-0003-2781-2386" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mazur-J-E", "name": { "family": "Mazur", "given": "J. E." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "How Common is Energetic ^3He in the Inner Heliosphere?", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar wind, helium ions, acceleration, plasma shock waves", "note": "\u00a9 2003 American Institute of Physics. Issue Date: September 2, 2003. This work was supported by the National Aeronautics and Space Administration at the California Institute of Technology and the Jet Propulsion Laboratory under grant NAG5-6912 and at the University of Maryland under grant PC 251429.\n\nPublished - WIEaipcp03.pdf
", "abstract": "Using data from the SIS and ULEIS instruments on the Advanced Composition Explorer (ACE) we have identified\nperiods during which energetic ^3He is present in near-Earth interplanetary space between November 1997 and May 2002. The data, which cover the energy intervals 0.2\u20131 MeV/nuc (ULEIS) and 4.5\u201316.3 MeV/nuc (SIS), show that ^3He is present a significant fraction of the time, as would be required if these suprathermal particles were the major source of the ^3He being accelerated by shocks in the interplanetary medium. Specifically, we find that energetic ^3He is present at least ~ 60% of the time, and perhaps significantly more often.", "date": "2003-09-02", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Washington, D.C.", "pagerange": "652-655", "id_number": "CaltechAUTHORS:20111028-100805937", "isbn": "0-7354-0148-9", "book_title": "Solar Wind Ten", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111028-100805937", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" }, { "agency": "University of Maryland", "grant_number": "PC 251429" } ] }, "other_numbering_system": { "items": [ { "id": "2003-58", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Velli-M", "name": { "family": "Velli", "given": "M." } }, { "id": "Bruno-R", "name": { "family": "Bruno", "given": "R." } }, { "id": "Malara-F", "name": { "family": "Malara", "given": "F." } } ] }, "doi": "10.1063/1.1618679", "primary_object": { "basename": "WIEaipcp03.pdf", "url": "https://authors.library.caltech.edu/records/rv79x-v6c12/files/WIEaipcp03.pdf" }, "pub_year": "2003", "author_list": "Wiedenbeck, M. E.; Mason, G. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/0eekf-0q742", "eprint_id": 27136, "eprint_status": "archive", "datestamp": "2023-08-19 11:58:45", "lastmod": "2024-01-13 05:42:49", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Gopalswamy-N", "name": { "family": "Gopalswamy", "given": "N." } }, { "id": "Yashiro-S", "name": { "family": "Yashiro", "given": "S." } }, { "id": "Michalek-G", "name": { "family": "Michalek", "given": "G." } }, { "id": "Kaiser-M-L", "name": { "family": "Kaiser", "given": "M. L." } }, { "id": "Howard-R-A", "name": { "family": "Howard", "given": "R. A." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R." }, "orcid": "0000-0002-0156-2414" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T." } }, { "id": "Reames-D-V", "name": { "family": "Reames", "given": "D. V." } } ] }, "title": "Effect of CME Interactions on the Production of Solar Energetic Particles", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar corona, interplanetary matter, radiosources (astronomical)", "note": "\u00a9 2003 American Institute of Physics.\nIssue Date: 2 September 2003.\n\nPublished - GOPaipcp03.pdf
", "abstract": "We analyzed a set of 52 fast and wide, frontside western hemispheric (FWFW) CMEs in conjunction with solar energetic particle (SEP) and radio burst data and found that 42 of these CMEs were associated with SEPs. All but two of the 42 SEP-associated FWFW CMEs (95%) were interacting with preceding CMEs or dense streamers. Most of the remaining 10 SEP-poor FWFW CMEs had either insignificant or no interaction with preceding CMEs or streamers, and were ejected into a tenuous corona. There is also a close association between type II radio bursts in the near-Sun interplanetary medium and SEP-associated FWFW CMEs suggesting that electron accelerators are also good proton accelerators.", "date": "2003-09-02", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "608-611", "id_number": "CaltechAUTHORS:20111010-095635795", "isbn": "0-7354-0148-9", "book_title": "Solar Wind Ten", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111010-095635795", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "2003.56", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Velli-M", "name": { "family": "Velli", "given": "Marco" } }, { "id": "Bruno-R", "name": { "family": "Bruno", "given": "Roberto" } }, { "id": "Malara-F", "name": { "family": "Malara", "given": "Francesco" } } ] }, "doi": "10.1063/1.1618668", "primary_object": { "basename": "GOPaipcp03.pdf", "url": "https://authors.library.caltech.edu/records/0eekf-0q742/files/GOPaipcp03.pdf" }, "pub_year": "2003", "author_list": "Gopalswamy, N.; Yashiro, S.; et el." }, { "id": "https://authors.library.caltech.edu/records/2njdv-c0k35", "eprint_id": 27143, "eprint_status": "archive", "datestamp": "2023-08-19 11:58:50", "lastmod": "2024-01-13 05:42:51", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "Space Weather at 75 AU", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar wind, solar cosmic ray particles, interplanetary matter", "note": "\u00a9 2003 American Institute of Physics.\nIssue Date: 2 September 2003. I am grateful to the PLS, LECP, and CRS teams for the use of unpublished Voyager data and to the SWEPAM, MAG, and EPAM teams and ACE Science\nCenter for unpublished ACE data. I also thank A. C.\nCummings, R. B. Decker, and J. D. Richardson, E. C.\nRoelof and E. C. Stone for helpful discussions. This\nwork was supported by NASA under NAS5-6912.\n\nPublished - MEWaipcp03.pdf
", "abstract": "Recent outer-heliosphere observations are reviewed from a space weather point of view by comparing the nature of solar wind, solar particle, and cosmic ray variations at the Voyagers and 1 AU. While the Sun still controls the interplanetary medium at 75 AU, the nearby boundaries of the heliosphere exert a strong influence on the environment.", "date": "2003-09-02", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "83-88", "id_number": "CaltechAUTHORS:20111010-110543822", "isbn": "0-7354-0148-9", "book_title": "Solar Wind Ten", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111010-110543822", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "2003-55", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Velli-M", "name": { "family": "Velli", "given": "Marco" } }, { "id": "Bruno-R", "name": { "family": "Bruno", "given": "Roberto" } }, { "id": "Malara-F", "name": { "family": "Malara", "given": "Francesco" } } ] }, "doi": "10.1063/1.1618547", "primary_object": { "basename": "MEWaipcp03.pdf", "url": "https://authors.library.caltech.edu/records/2njdv-c0k35/files/MEWaipcp03.pdf" }, "pub_year": "2003", "author_list": "Mewaldt, R. A." }, { "id": "https://authors.library.caltech.edu/records/bsvfb-9de89", "eprint_id": 27130, "eprint_status": "archive", "datestamp": "2023-08-19 11:18:58", "lastmod": "2024-01-13 05:42:44", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Grindlay-J", "name": { "family": "Grindlay", "given": "J." } }, { "id": "Gehrels-N", "name": { "family": "Gehrels", "given": "N." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "F." }, "orcid": "0000-0003-2992-8024" }, { "id": "Blandford-R-D", "name": { "family": "Blandford", "given": "R." }, "orcid": "0000-0002-1854-5506" }, { "id": "Fishman-G", "name": { "family": "Fishman", "given": "G." } }, { "id": "Kouveliotou-C", "name": { "family": "Kouveliotou", "given": "C." }, "orcid": "0000-0003-1443-593X" }, { "id": "Hartmann-D-H", "name": { "family": "Hartmann", "given": "D. H." } }, { "id": "Woosley-S", "name": { "family": "Woosley", "given": "S." } }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "W." } }, { "id": "Hong-Jaesub", "name": { "family": "Hong", "given": "J. S." } } ] }, "title": "Proposed Next Generation GRB Mission: EXIST", "ispublished": "unpub", "full_text_status": "public", "keywords": "gamma-ray sources (astronomical), astronomical telescopes, X-ray apparatus", "note": "\u00a9 2003 American Institute of Physics. \n\nIssue Date: 14 April 2003.\n\nPublished - GRIaipcp03.pdf
", "abstract": "A next generation Gamma Ray Burst (GRB) mission to follow the upcoming Swift mission is described. The proposed Energetic X-ray Imaging Survey Telescope, EXIST, would yield the limiting (practical) GRB trigger sensitivity, broad-band spectral and temporal response, and spatial resolution over a wide field. It would provide high resolution spectra and locations for GRBs detected at GeV energies with GLAST. Together with the next generation missions Constellation-X, NGST and LISA and optical-survey (LSST) telescopes, EXIST would enable GRBs to be used as probes of the early universe and the first generation of stars. EXIST alone would give ~10\u201350\" positions (long or short GRBs), approximate redshifts from lags, and constrain physics of jets, orphan afterglows, neutrinos and SGRs.", "date": "2003-04-14", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "477-480", "id_number": "CaltechAUTHORS:20111007-144629358", "isbn": "0-7354-0122-5", "book_title": "Gamma-ray burst and afterglow astronomy 2001", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111007-144629358", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Ricker-G-R", "name": { "family": "Ricker", "given": "G. R." } }, { "id": "Vanderspek-R-K", "name": { "family": "Vanderspek", "given": "R. K." } } ] }, "doi": "10.1063/1.1579406", "primary_object": { "basename": "GRIaipcp03.pdf", "url": "https://authors.library.caltech.edu/records/bsvfb-9de89/files/GRIaipcp03.pdf" }, "pub_year": "2003", "author_list": "Grindlay, J.; Gehrels, N.; et el." }, { "id": "https://authors.library.caltech.edu/records/8x92b-phm25", "eprint_id": 84202, "eprint_status": "archive", "datestamp": "2023-08-19 11:12:22", "lastmod": "2024-01-14 19:16:19", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Jensen-C-P", "name": { "family": "Jensen", "given": "Carsten P." } }, { "id": "Madsen-K-K", "name": { "family": "Madsen", "given": "Kristin K." }, "orcid": "0000-0003-1252-4891" }, { "id": "Chen-C-M-Hubert", "name": { "family": "Chen", "given": "Hubert C." } }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "Finn E." }, "orcid": "0000-0001-5679-1946" }, { "id": "Ziegler-E", "name": { "family": "Ziegler", "given": "Eric" } } ] }, "title": "Coating of the HEFT telescope mirrors: method and results", "ispublished": "unpub", "full_text_status": "public", "keywords": "X-ray multilayers, hard X-ray telescopes, planar magnetron sputtering", "note": "\u00a9 2003 Society of Photo-Optical Instrumentation Engineers (SPIE).\n\nPublished - 724.pdf
", "abstract": "We report on the coating of depth graded W/Si multilayers on the thermally slumped glass substrates for the HEFT flight telescopes. The coatings consists of several hundred bilayers in an optimized graded power law design with stringent requirements on uniformity and interfacial roughness. We present the details of the planar magnetron sputtering facility including the optimization of power, Ar pressure and collimating geometry which allows us to coat the several thousand mirror segments required for each telescope module on a time schedule consistent with the current HEFT balloon project as well as future hard X-ray satellite projects. Results are presented on the uniformity, interfacial roughness, and reflectivity and scatter at hard X-ray energies.", "date": "2003-03-11", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "place_of_pub": "Bellingham, WA", "pagerange": "724-733", "id_number": "CaltechAUTHORS:20180109-151756474", "isbn": "9780819446305", "book_title": "X-Ray and Gamma-Ray Telescopes and Instruments for Astronomy", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180109-151756474", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Tr\u00fcmper-J-E", "name": { "family": "Tr\u00fcmper", "given": "Joachim E." } }, { "id": "Tananbaum-H-D", "name": { "family": "Tananbaum", "given": "Harvey D." } } ] }, "doi": "10.1117/12.461315", "primary_object": { "basename": "724.pdf", "url": "https://authors.library.caltech.edu/records/8x92b-phm25/files/724.pdf" }, "pub_year": "2003", "author_list": "Jensen, Carsten P.; Madsen, Kristin K.; et el." }, { "id": "https://authors.library.caltech.edu/records/mzeyy-hyg58", "eprint_id": 84199, "eprint_status": "archive", "datestamp": "2023-08-19 11:12:17", "lastmod": "2024-01-14 19:16:13", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Grindlay-J-E", "name": { "family": "Grindlay", "given": "Jonathan E." }, "orcid": "0000-0002-1323-5314" }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "William W." } }, { "id": "Gehrels-N", "name": { "family": "Gehrels", "given": "Neil A." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Hong-J", "name": { "family": "Hong", "given": "J." } } ] }, "title": "EXIST: mission design concept and technology program", "ispublished": "unpub", "full_text_status": "public", "keywords": "EXIST, hard x-ray surveys, black holes, gamma-ray bursts, coded aperture imaging, hard x-ray imaging detectors, CZT arrays", "note": "\u00a9 2003 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nWe thank the EXIST Science Working Group (see http://existgsfc.nasa.gov) for input on the mission science and goals, S. Barthelmy, A. Parsons, C. Hailey and G. Fishman for technical assistance in the ISAL and IMDC mission studies at GSFC, R. Carter and S. DePaolo for management of the mission study at GSFC, T. Narita, J. Jenkins and W. Cook for detector and readout design discussions, and T. Decker and R. Hill for mechanical design assistance. This work was supported in part by NASA SR&T grant NAG5-5729 and support from NASA HQ for the design studies at GSFC is gratefully acknowledged.\n\nPublished - 331.pdf
", "abstract": "The Energetic X-ray Imaging Survey Telescope (EXIST) is a proposed very large area coded aperture telescope array, incorporting 8m^2 of pixelated Cd-Zn-Te (CZT) detectors, to conduct a full-sky imaging and temporal hard x-ray survey each 95min orbit. With a sensitivity of ~0.05mCrab, it will extend the ROSAT soft x-ray and proposed ROSITA medium x-ray surveys into the hard x-ray band and enable identifiaiton and study of sources ~10-20X fainter than with the ~15-100keV survey planned for the upcoming Swift mission. At ~100-600keV, the ~1mCrab sensitivity is 300X that achieved in the only previous all-sky survey. EXIST will address a broad range of key science objectives: from obscured AGN and surveys for black holes on all scales, which constrain the acretion history of the universe, to the highest sensitivity and resolution studies of gamma-ray bursts it will conduct as the Next Generation Gamma-Ray Burst mission. We summarize the science objectives and mission drivers, and the results of a mission design study for implementation as a free flyer mission, with Delta IV launch. Key issues affecting the telescope and detector design are discussed, and a summary of some of the current design concepts being studied in support of EXIST is presented for the wide-field but high resolutoin coded aperture imaging and very large area array of imaging CZT detectors. Overall mission design is summarized, and technology development needs and a development program are outlined which would enable the launch of EXIST by the end of the decade, as recommended by the NAS/NRC Decadal Survey.", "date": "2003-03-11", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "place_of_pub": "Bellingham, WA", "pagerange": "331-344", "id_number": "CaltechAUTHORS:20180109-145928633", "isbn": "9780819446305", "book_title": "X-Ray and Gamma-Ray Telescopes and Instruments for Astronomy", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180109-145928633", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-5729" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Tr\u00fcmper-J-E", "name": { "family": "Tr\u00fcmper", "given": "Joachim E." } }, { "id": "Tananbaum-H-D", "name": { "family": "Tananbaum", "given": "Harvey D." } } ] }, "doi": "10.1117/12.461470", "primary_object": { "basename": "331.pdf", "url": "https://authors.library.caltech.edu/records/mzeyy-hyg58/files/331.pdf" }, "pub_year": "2003", "author_list": "Grindlay, Jonathan E.; Craig, William W.; et el." }, { "id": "https://authors.library.caltech.edu/records/cgftm-k3611", "eprint_id": 84260, "eprint_status": "archive", "datestamp": "2023-08-19 11:12:51", "lastmod": "2024-01-14 19:30:35", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Koglin-J-E", "name": { "family": "Koglin", "given": "Jason E." } }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "Finn E." }, "orcid": "0000-0001-5679-1946" }, { "id": "Chonko-J-C", "name": { "family": "Chonko", "given": "Jim" } }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "William W." } }, { "id": "Decker-T-R", "name": { "family": "Decker", "given": "Todd R." } }, { "id": "Jimenez-Garate-M-A", "name": { "family": "Jimenez-Garate", "given": "Mario A." } }, { "id": "Gunderson-K-S", "name": { "family": "Gunderson", "given": "Kurt" } }, { "id": "Hailey-C-J", "name": { "family": "Hailey", "given": "Charles J." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Jensen-C-P", "name": { "family": "Jensen", "given": "Carsten P." } }, { "id": "Sileo-M", "name": { "family": "Sileo", "given": "Mike" } }, { "id": "Windt-D-L", "name": { "family": "Windt", "given": "David L." } }, { "id": "Yu-Haitao", "name": { "family": "Yu", "given": "Haitao" } } ] }, "title": "Development and production of hard X-ray multilayer optics for HEFT", "ispublished": "unpub", "full_text_status": "public", "keywords": "X-ray optics, Hard X-ray telescope", "note": "\u00a9 2003 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nThis technical progress described in this paper could not have been made without the expert and tireless work of our technical staff. In particular, Marcela Stern was essential in defining the slumping techniques. We are very grateful to CASA at the University of Colorado for hosting us as guests at their excellent long-beam UV facility. This work is supported by a NASA grant to Columbia University: NAG5-5260 (Thermally Formed Optics for X-Ray and Gamma-Ray Astronomy), and by NASA grants to the California Institute of Technology with subawards to Columbia: Caltech No. 1019776 (High Energy Focussing Telescope) and Caltech No. 1046806 (Critical Technologies for the Constellation Hard X-Ray Telescope).\n\nPublished - 607.pdf
", "abstract": "The High Energy Focusing Telescope (HEFT) will observe a wide range of objects including young supernova remnants, active galactic nuclei, and galaxy clusters at energies between 20 and 70 keV. Large collecting areas are achieved by tightly nesting layers of grazing incidence mirrors in a conic approximation Wolter-I design. The segmented mirrors that form these layers are made of thermally formed glass substrates coated with depth-graded multilayer films for enhanced reflectivity. The mirrors are assembled using an over-constraint method that forces the overall shape of the nominally cylindrical substrates to the appropriate conic form. We will present performance data on the HEFT optics and report the current status of the assembly production.", "date": "2003-03-11", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "607-618", "id_number": "CaltechAUTHORS:20180111-131341721", "isbn": "0-8194-4630-0", "book_title": "X-Ray and Gamma-Ray Telescopes and Instruments for Astronomy", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180111-131341721", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-5260" }, { "agency": "NASA", "grant_number": "1019776" }, { "agency": "NASA", "grant_number": "1046806" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Tr\u00fcmper-J-E", "name": { "family": "Tr\u00fcmper", "given": "Joachim E." } }, { "id": "Tananbaum-H-D", "name": { "family": "Tananbaum", "given": "Harvey D." } } ] }, "doi": "10.1117/12.461479", "primary_object": { "basename": "607.pdf", "url": "https://authors.library.caltech.edu/records/cgftm-k3611/files/607.pdf" }, "pub_year": "2003", "author_list": "Koglin, Jason E.; Christensen, Finn E.; et el." }, { "id": "https://authors.library.caltech.edu/records/3mzt4-ftd73", "eprint_id": 84234, "eprint_status": "archive", "datestamp": "2023-08-19 11:12:37", "lastmod": "2024-01-14 19:30:05", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Koglin-J-E", "name": { "family": "Koglin", "given": "Jason E." } }, { "id": "Chen-C-M-Hubert", "name": { "family": "Chen", "given": "Hubert C." } }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "Finn E." }, "orcid": "0000-0001-5679-1946" }, { "id": "Chonko-J-C", "name": { "family": "Chonko", "given": "Jim" } }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "William W." } }, { "id": "Decker-T-R", "name": { "family": "Decker", "given": "Todd R." } }, { "id": "Jimenez-Garate-M-A", "name": { "family": "Jimenez-Garate", "given": "Mario A." } }, { "id": "Hailey-C-J", "name": { "family": "Hailey", "given": "Charles J." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Jensen-C-P", "name": { "family": "Jensen", "given": "Carsten P." } }, { "id": "Sileo-M", "name": { "family": "Sileo", "given": "Mike" } }, { "id": "Windt-D-L", "name": { "family": "Windt", "given": "David L." } }, { "id": "Yu-Haitao", "name": { "family": "Yu", "given": "Haitao" } } ] }, "title": "Development of precision hard x-ray multilayer optics with sub-arcminute performance", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2003 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nThis technical progress described in this paper could not have been made without the expert and tireless work of our technical staff. In particular, Marcela Stern was essential in defining the slumping techniques. This work is supported by a NASA grant to Columbia University: NAG5-5260 (Thermally Formed Optics for X-Ray and Gamma-Ray Astronomy), and by NASA grants to the California Institute of Technology with subawards to Columbia: Caltech No. 1019776 (High Energy Focussing Telescope) and Caltech No. 1046806 (Critical Technologies for the Constellation Hard X-Ray Telescope).\n\nPublished - 673.pdf
", "abstract": "A new generation of hard X-ray telescopes using focusing optics are poised to dramatically improve the sensitivity and angular resolution at energies above 10 keV to levels that were previously unachievable by the past generation of background-limited collimated and coded-aperture instruments. Active balloon programs (HEFT, InFocus), possible Explorer-class satellites, and major X-ray observatories (Constellation-X, XEUS) using focusing optics will play a major role in future observations of a wide range of objects including young supernova remnants, active galactic nuclei, and galaxy clusters. These instruments call for grazing incidence optics coated with depth-graded multilayer films to achieve large collecting areas. To accomplish the ultimate goals of the more advanced satellite missions such as Constellation-X, lightweight and low-cost substrates with angular resolution well below an arcminute must be developed. Recent experimental results will be presented on the development of improved substrates and precision mounting techniques that yield sub-arcminute performance.", "date": "2003-03-11", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "place_of_pub": "Bellingham, WA", "pagerange": "673-683", "id_number": "CaltechAUTHORS:20180110-154040549", "isbn": "9780819446305", "book_title": "X-Ray and Gamma-Ray Telescopes and Instruments for Astronomy", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180110-154040549", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-5260" }, { "agency": "NASA", "grant_number": "1019776" }, { "agency": "NASA", "grant_number": "1046806" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Tr\u00fcmper-J-E", "name": { "family": "Tr\u00fcmper", "given": "Joachim E." } }, { "id": "Tananbaum-H-D", "name": { "family": "Tananbaum", "given": "Harvey D." } } ] }, "doi": "10.1117/12.461488", "primary_object": { "basename": "673.pdf", "url": "https://authors.library.caltech.edu/records/3mzt4-ftd73/files/673.pdf" }, "pub_year": "2003", "author_list": "Koglin, Jason E.; Chen, Hubert C.; et el." }, { "id": "https://authors.library.caltech.edu/records/zgxqs-r4p92", "eprint_id": 88369, "eprint_status": "archive", "datestamp": "2023-08-19 11:12:56", "lastmod": "2024-01-14 20:31:49", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Chen-C-M-Hubert", "name": { "family": "Chen", "given": "C. M. Hubert" } }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "Finn E." }, "orcid": "0000-0001-5679-1946" }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Mao-Peter-H", "name": { "family": "Mao", "given": "Peter H." } }, { "id": "Windt-D-L", "name": { "family": "Windt", "given": "David L." } } ] }, "title": "Design of a soft gamma-ray focusing telescope for the study of nuclear lines", "ispublished": "unpub", "full_text_status": "public", "keywords": "Gamma-ray astrophysics, multilayer optimization, Type Ia supernova", "note": "\u00a9 2003 Society of Photo-optical Instrumentation Engineers (SPIE). \n\nThe research reported in this paper is supported by NASA's Supporting Research and Technology (SR&T) grant NAG5-5289. The multilayer optimization programme was run in part using the Hewlett-Packard V2500 computer system operated by Caltech's Center for Advanced Computing Research (CACR). Access to this system was provided by Prof. Thomas A. Prince. We are very grateful for all their support.\n\nPublished - 1356.pdf
", "abstract": "We have studied the design of astronomical multilayer telescopes optimized for performance from 5 to 200 keV. This region of the spectrum contains important nuclear lines that are observable in supernovae and their remnants. The study of these lines can help to differentiate currently competing theories of supernova explosion. Our telescope design will enable us to measure the spectral lines of isotopes such as Ni-56 in Type Ia supernovae and Ti-44 in core-collapse remnants, as well as to observe active galactic nuclei at gamma-ray energies. We considered the performances of multilayers of various material pairs, including W/Si, Pt/C and Ni93V7/Si, as employed in conical-approximation Wolter I optics. We experimented with dividing the energy band of interest into several sections, and optimizing different groups of mirror shells within a single telescope for each smaller energy band. Different material pairs are also used for different energy bands, in order to obtain a higher overall performance. We also consider the significance of the energy bandwidth on the effectiveness of Joensen's parametrization of the multilayer thickness profile, and on the mirror performance within the band.", "date": "2003-03-11", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "1356-1365", "id_number": "CaltechAUTHORS:20180731-085524568", "isbn": "9780819446305", "book_title": "X-Ray and Gamma-Ray Telescopes and Instruments for Astronomy", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180731-085524568", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-5289" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Tr\u00fcmper-J-E", "name": { "family": "Tr\u00fcmper", "given": "Joachim E." } }, { "id": "Tananbaum-H-D", "name": { "family": "Tananbaum", "given": "Harvey D." } } ] }, "doi": "10.1117/12.461419", "primary_object": { "basename": "1356.pdf", "url": "https://authors.library.caltech.edu/records/zgxqs-r4p92/files/1356.pdf" }, "pub_year": "2003", "author_list": "Chen, C. M. Hubert; Christensen, Finn E.; et el." }, { "id": "https://authors.library.caltech.edu/records/qnw2p-23b35", "eprint_id": 84232, "eprint_status": "archive", "datestamp": "2023-08-19 11:12:32", "lastmod": "2024-01-14 19:30:01", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "F. A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Bolotnikov-A-E", "name": { "family": "Bolotnikov", "given": "A." } }, { "id": "Chen-C-M-Hubert", "name": { "family": "Chen", "given": "C. M. H." } }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. R." } }, { "id": "Mao-Peter-H", "name": { "family": "Mao", "given": "P. H." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } } ] }, "title": "Development of a high-spectral-resolution cadmium zinc telluride pixel detector for astrophysical applications", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2003 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nThis work is supported in part by NASA's SR&T program (NAGW 5-5289). FAH acknowledges support from a Presidential Early Career Award. We thank Jill Burnham and Branislav Kecman for their contributions to the detector bonding and VLSI development.\n\nPublished - 823.pdf
", "abstract": "Over the last six years, we have been developing imaging Cadmium Zinc Telluride pixel detectors optimized for astrophysical focusing hard X-ray telescopes. This application requires sensors with modest area, relatively small pixels (\u227e 500 \u00b5m) and sub-keV energy resolution. For experiments operating in satellite orbits, energy thresholds of ~1-2 keV are also desirable. In this paper we describe the desired detector performance characteristics, and report on the status of our development effort. In particular, we present results from a 1152-channel custom low-noise VLSI readout designed to achieve excellent spectral resolution and good imaging performance in the 5 - 100 keV band.", "date": "2003-03-11", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "place_of_pub": "Bellingham, WA", "pagerange": "823-830", "id_number": "CaltechAUTHORS:20180110-134759552", "isbn": "9780819446305", "book_title": "X-Ray and Gamma-Ray Telescopes and Instruments for Astronomy", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180110-134759552", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGW 5-5289" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Tr\u00fcmper-J-E", "name": { "family": "Tr\u00fcmper", "given": "Joachim E." } }, { "id": "Tananbaum-H-D", "name": { "family": "Tananbaum", "given": "Harvey D." } } ] }, "doi": "10.1117/12.461165", "primary_object": { "basename": "823.pdf", "url": "https://authors.library.caltech.edu/records/qnw2p-23b35/files/823.pdf" }, "pub_year": "2003", "author_list": "Harrison, F. A.; Bolotnikov, A.; et el." }, { "id": "https://authors.library.caltech.edu/records/k8f1h-tjt46", "eprint_id": 84259, "eprint_status": "archive", "datestamp": "2023-08-19 11:12:47", "lastmod": "2024-01-14 19:30:33", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Windt-D-L", "name": { "family": "Windt", "given": "David L." } }, { "id": "Donguy-Soizik", "name": { "family": "Donguy", "given": "Soizik" } }, { "id": "Hailey-C-J", "name": { "family": "Hailey", "given": "Charles J." } }, { "id": "Koglin-J-E", "name": { "family": "Koglin", "given": "Jason" } }, { "id": "Honkimaki-V", "name": { "family": "Honkimaki", "given": "Veijo" } }, { "id": "Ziegler-E", "name": { "family": "Ziegler", "given": "Eric" } }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "Finn E." }, "orcid": "0000-0001-5679-1946" }, { "id": "Chen-C-M-Hubert", "name": { "family": "Chen", "given": "C. M. Hubert" } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "William W." } } ] }, "title": "W/SiC X-ray multilayers optimized for use above 100 keV", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2003 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nThis work was funded by an SR&T grant from NASA.\n\nPublished - 639.pdf
", "abstract": "We have developed a new depth-graded multilayer system comprising W and SiC layers, suitable for use as hard X-ray reflective coatings operating in the energy range 100 - 200 keV. Grazing incidence X-ray reflectance at E=8 keV was used to characterize the interface widths, as well as the temporal and thermal stability in both periodic and depth-graded W/SiC structures, while synchrotron radiation was used to measure the hard X-ray reflectance of a depth-graded multilayer designed specifically for use in the range E~150 - 170 keV. We have modeled the hard X-ray reflectance using newly-derived optical constants, which we determined from reflectance-vs-incidence angle measurements also made using synchrotron radiation, in the range E=120 - 180 keV. We describe our experimental investigation in detail, compare the new W/SiC multilayers with both W/Si and W/B4C films that have been studied previously, and discuss the significance of these results with regard to the eventual development of a hard X-ray nuclear line telescope.", "date": "2003-03-11", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "639-646", "id_number": "CaltechAUTHORS:20180111-125339316", "isbn": "0-8194-4630-0", "book_title": "X-Ray and Gamma-Ray Telescopes and Instruments for Astronomy", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180111-125339316", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Tr\u00fcmper-J-E", "name": { "family": "Tr\u00fcmper", "given": "Joachim E." } }, { "id": "Tananbaum-H-D", "name": { "family": "Tananbaum", "given": "Harvey D." } } ] }, "doi": "10.1117/12.461303", "primary_object": { "basename": "639.pdf", "url": "https://authors.library.caltech.edu/records/k8f1h-tjt46/files/639.pdf" }, "pub_year": "2003", "author_list": "Windt, David L.; Donguy, Soizik; et el." }, { "id": "https://authors.library.caltech.edu/records/38fbd-5yj38", "eprint_id": 84208, "eprint_status": "archive", "datestamp": "2023-08-19 11:12:27", "lastmod": "2024-01-14 19:29:57", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hailey-C-J", "name": { "family": "Hailey", "given": "C. J." } }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "F. E." }, "orcid": "0000-0001-5679-1946" }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "W. W." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "F. A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Koglin-J-E", "name": { "family": "Koglin", "given": "J." } }, { "id": "Petre-R", "name": { "family": "Petre", "given": "R." } }, { "id": "Windt-D-L", "name": { "family": "Windt", "given": "D. W." } }, { "id": "Zhang-W-W", "name": { "family": "Zhang", "given": "W." }, "orcid": "0000-0002-1426-9698" } ] }, "title": "Overview of segmented glass optics development for the Constellation-X hard X-ray telescope", "ispublished": "unpub", "full_text_status": "public", "keywords": "Constellation-X, X-ray optics, Hard X-ray telescope", "note": "\u00a9 2003 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nThis work is supported by a NASA grant to Columbia University: NAG5-5260 (Thermally Formed Optics for X-Ray and Gamma-Ray Astronomy), and by NASA grants to the California Institute of Technology with subawards to Columbia: Caltech No. 1019776 (High Energy Focussing Telescope) and Caltech No. 1046806 (Critical Technologies for theConstellation Hard X-Ray Telescope).\n\nPublished - 519.pdf
", "abstract": "We report recent work on segmented glass optics for the Constellation-H hard x-ray telescope. This effort seeks to both improve the figure of the free-standing glass substrates, and to refine a newly-developed mounting technology for the substrates. We discuss metrology on recently characterized glass shells both unmounted and mounted. We also present plans for several prototype optics to be constructed in the upcoming year.", "date": "2003-03-11", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "id_number": "CaltechAUTHORS:20180109-153136220", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180109-153136220", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-5260" }, { "agency": "NASA", "grant_number": "1019776" }, { "agency": "NASA", "grant_number": "1046806" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Tr\u00fcmper-J-E", "name": { "family": "Tr\u00fcmper", "given": "Joachim E." } }, { "id": "Tananbaum-H-D", "name": { "family": "Tananbaum", "given": "Harvey D." } } ] }, "doi": "10.1117/12.461487", "primary_object": { "basename": "519.pdf", "url": "https://authors.library.caltech.edu/records/38fbd-5yj38/files/519.pdf" }, "pub_year": "2003", "author_list": "Hailey, C. J.; Christensen, F. E.; et el." }, { "id": "https://authors.library.caltech.edu/records/yhgww-srg24", "eprint_id": 56268, "eprint_status": "archive", "datestamp": "2023-08-19 10:34:59", "lastmod": "2023-10-23 15:15:32", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "The Solar Cycle Variability of Solar Energetic Particle\n Composition", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universal Academy Press Inc.\n\nThis work was funded by NASA at Caltech (under grants NAG5-6912 and NAG5-12929), JPL, and the Goddard Space Flight Center. HCS tilt angles were obtained from the Wilcox Solar Observatory web site.\n\nPublished - 2003-17.pdf
", "abstract": "Solar particle isotopic composition varies greatly from event to event, apparently due to mass fractionation during particle acceleration and/or transport. We examine whether the amount of this variability changes during the solar cycle and find a strong indication of less isotopic compositional variability at solar maximum than during less active phases. There also seems to be a similar but weaker\nassociation using elemental abundances. The underlying cause of the variability and reasons why it might change over the solar cycle are yet to be determined.", "date": "2003", "date_type": "published", "publisher": "International Union of Applied Physics", "id_number": "CaltechAUTHORS:20150401-085647968", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150401-085647968", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" }, { "agency": "NASA", "grant_number": "NAG5-12919" } ] }, "other_numbering_system": { "items": [ { "id": "2003-17", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kajita-Takaaki", "name": { "family": "Kajita", "given": "Takaaki" } }, { "id": "Asaoka-Y", "name": { "family": "Asaoka", "given": "Y." } }, { "id": "Kawachi-A", "name": { "family": "Kawachi", "given": "A." } }, { "id": "Matsubara-Y", "name": { "family": "Matsubara", "given": "Y." } }, { "id": "Sasaki-Misao", "name": { "family": "Sasaki", "given": "M." } } ] }, "primary_object": { "basename": "2003-17.pdf", "url": "https://authors.library.caltech.edu/records/yhgww-srg24/files/2003-17.pdf" }, "pub_year": "2003", "author_list": "Leske, R. A.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/vztbp-fqe12", "eprint_id": 55594, "eprint_status": "archive", "datestamp": "2023-08-19 10:34:41", "lastmod": "2023-10-20 22:25:07", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "McDonald-F-B", "name": { "family": "McDonald", "given": "F. B." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Heikkila-B-C", "name": { "family": "Heikkila", "given": "B." } }, { "id": "Lal-N", "name": { "family": "Lal", "given": "N." } }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "Unusual Enhancements of MeV Ions and Electrons as Voyager 1 Approaches the Heliospheric Termination Shock", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright 2003 by Universal Academy Press, Inc.\n\nPublished - 2003-34.pdf
", "abstract": "In mid-2002 as Voyager 1 moved beyond 85 AU there began an unusual increase of 2.5 MeV ions that remained at a level near 0.1 protons/cm^2-s-sr-MeV for some 6 months. Simultaneously there was an increase in the 2.5 - 70 MeV\nelectrons and in the galactic and anomalous cosmic ray intensity. The electrons are most probably of galactic origin and like the cosmic ray ions are responding to\nthe more favorable modulation levels in the distant heliosphere. It is proposed that the MeV ions are of solar/interplanetary (S/IP) origin with possibly a significant component of IP accelerated pickup ions that have been reaccelerated. Several possibilities for this reacceleration are discussed including the proximity of the\ntermination shock (T.S.).", "date": "2003", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150306-111608994", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150306-111608994", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "2003-34", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kajita-T", "name": { "family": "Kajita", "given": "T." } }, { "id": "Asaoka-Y", "name": { "family": "Asaoka", "given": "Y." } }, { "id": "Kawachi-A", "name": { "family": "Kawachi", "given": "A" } }, { "id": "Matsubara-Y", "name": { "family": "Matsubara", "given": "Y." } }, { "id": "Sasaki-M", "name": { "family": "Sasaki", "given": "M." } } ] }, "primary_object": { "basename": "2003-34.pdf", "url": "https://authors.library.caltech.edu/records/vztbp-fqe12/files/2003-34.pdf" }, "pub_year": "2003", "author_list": "McDonald, F. B.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/bs6ag-v7g14", "eprint_id": 56332, "eprint_status": "archive", "datestamp": "2023-08-19 10:35:12", "lastmod": "2023-10-23 15:19:30", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Voyager Observations of Anomalous Cosmic Ray Gradients and the Role of Diffusion and Drifts in the Outer Heliosphere", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universal Academy Press Inc.\n\nPublished - 2003-39.pdf
", "abstract": "We find that the diffusion mean free path at 1.5 GV inferred from the gradient of anomalous cosmic rays (ACRs) observed by Voyager 1 and 2 (V1 and V2) has an approximately linear radial distance dependence at solar maximum. At solar minimum the mean free path is a factor of 10 or more larger than at solar maximum. We find that the expected dependence on current sheet tilt of the ACR O V1/V2 gradient has not become evident as of early 2003, likely because the tilt has yet to decrease below \u02dc40\u00b0 . It appears that from mid-2000 up to day 104 of 2003 diffusion is the dominant particle transport mechanism in the far outer heliosphere at 1.5 GV.", "date": "2003", "date_type": "published", "publisher": "International Union of Applied Physics", "id_number": "CaltechAUTHORS:20150403-085521517", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150403-085521517", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "2003-39", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kajita-T", "name": { "family": "Kajita", "given": "Takaaki" } }, { "id": "Asaoka-Y", "name": { "family": "Asaoka", "given": "Y." } }, { "id": "Kawachi-A", "name": { "family": "Kawachi", "given": "A." } }, { "id": "Matsubara-Y", "name": { "family": "Matsubara", "given": "Y." } }, { "id": "Sasaki-M", "name": { "family": "Sasaki", "given": "M." } } ] }, "primary_object": { "basename": "2003-39.pdf", "url": "https://authors.library.caltech.edu/records/bs6ag-v7g14/files/2003-39.pdf" }, "pub_year": "2003", "author_list": "Cummings, A. C. and Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/vecmb-ccg63", "eprint_id": 56390, "eprint_status": "archive", "datestamp": "2023-08-19 10:36:03", "lastmod": "2023-10-23 15:22:03", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Scott-L-M", "name": { "family": "Scott", "given": "L. M." } }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Niebur-S-M", "name": { "family": "Niebur", "given": "S. M." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } } ] }, "title": "Direct Evidence of Energy-Loss in Electron-Capture-Decay Secondary Isotopes in the Heliosphere", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universal Academy Press Inc.\n\nThis research was supported by NASA grants NAG5-6912 and NAG5-12929 to the California Institute of Technology and by related grants to the Jet Propulsion Laboratory, the Goddard Space Flight Center, and Washington University.\n\nPublished - 2003-19.pdf
", "abstract": "We report direct evidence of the energy loss of galactic cosmic rays as they diffuse in magnetic irregularities expanding with the solar wind. Using the Cosmic\nRay Isotope Spectrometer (CRIS) on the Advanced Composition Explorer (ACE), we report on the energy-dependence of the electron-capture decay of the secondary isotopes ^(49)V and ^(51)Cr. At the highest energies observed by CRIS, where\nelectron attachment is unlikely, ^(49)V and ^(51)Cr are essentially stable; at lower energies the timescale for electron attachment is much shorter and substantial decay\ndoes occur. Comparing the energy dependence of the daughter/parent ratios ^(49)Ti/^(49)V and ^(51)V/^(51)Cr during periods of solar minimum and maximum demonstrates that the solar modulation parameter \u03c6 is about 400 to 700 MV higher\nduring solar maximum than at minimum. Absolute values of \u03c6 inferred from these electron-capture-isotope data agree well with values inferred from comparison of the observed elemental energy spectra with model calculations.", "date": "2003", "date_type": "published", "publisher": "International Union of Applied Physics", "id_number": "CaltechAUTHORS:20150406-141916278", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150406-141916278", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" }, { "agency": "NASA", "grant_number": "NAG5-12929" } ] }, "other_numbering_system": { "items": [ { "id": "2003-19", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kajita-T", "name": { "family": "Kajita", "given": "Takaaki" } }, { "id": "Asaoka-Y", "name": { "family": "Asaoka", "given": "Y." } }, { "id": "Kawachi-A", "name": { "family": "Kawachi", "given": "A." } }, { "id": "Matsubara-Y", "name": { "family": "Matsubara", "given": "Y." } }, { "id": "Sasaki-M", "name": { "family": "Sasaki", "given": "M." } } ] }, "primary_object": { "basename": "2003-19.pdf", "url": "https://authors.library.caltech.edu/records/vecmb-ccg63/files/2003-19.pdf" }, "pub_year": "2003", "author_list": "Scott, L. M.; Davis, A. J.; et el." }, { "id": "https://authors.library.caltech.edu/records/tg01s-0vt71", "eprint_id": 56351, "eprint_status": "archive", "datestamp": "2023-08-19 10:35:44", "lastmod": "2023-10-23 15:20:29", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Sollitt-L-S", "name": { "family": "Sollitt", "given": "L. S." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Ionic Charge States of High Energy Solar Energetic Particles in Large Events", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universal Academy Press Inc.\n\nThis work was supported by NASA at Caltech, JPL, and GSFC under grants NAG5-6912 and NAG5-12929.\n\nPublished - 2003-15.pdf
", "abstract": "We present a novel technique to infer average ionic charge states of high energy (\u2265 10 MeV/nuc) solar energetic particles (SEPs) in large solar events. In some large SEP events, it is observed that higher energy SEPs decay in intensity more rapidly than at lower energies. Furthermore, this energy dependence varies with particle species, as would be expected if the decay timescale depended on a\nrigidity-dependent diffusive mean free path. By comparing the decay timescales of nitrogen, oxygen, neon, magnesium, silicon, sulfur, and iron to a reference element, such as carbon, charge states are inferred for these elements in several SEP events between 1997 and 2002. There is considerable variation in the inferred charge state of iron from event to event. For the November 6, 1997 event, charge\nstates are also inferred for sodium, calcium, and nickel.", "date": "2003", "date_type": "published", "publisher": "International Union of Applied Physics", "id_number": "CaltechAUTHORS:20150403-134653895", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150403-134653895", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" }, { "agency": "NASA", "grant_number": "NAG5-12929" } ] }, "other_numbering_system": { "items": [ { "id": "2003-15", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kajita-T", "name": { "family": "Kajita", "given": "Takaaki" } }, { "id": "Asaoka-Y", "name": { "family": "Asaoka", "given": "Y." } }, { "id": "Kawachi-A", "name": { "family": "Kawachi", "given": "A." } }, { "id": "Matsubara-Y", "name": { "family": "Matsubara", "given": "Y." } }, { "id": "Sasaki-Misao", "name": { "family": "Sasaki", "given": "M." } } ] }, "primary_object": { "basename": "2003-15.pdf", "url": "https://authors.library.caltech.edu/records/tg01s-0vt71/files/2003-15.pdf" }, "pub_year": "2003", "author_list": "Sollitt, L. S.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/ntymf-03305", "eprint_id": 56337, "eprint_status": "archive", "datestamp": "2023-08-19 10:35:26", "lastmod": "2023-10-23 15:19:44", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Geier-S", "name": { "family": "Geier", "given": "S." }, "orcid": "0000-0002-3948-9339" }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Link-J-T", "name": { "family": "Link", "given": "J. T." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Scott-L-M", "name": { "family": "Scott", "given": "L. M." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } } ] }, "title": "Possible Detection of Large Solar Particle Event at Balloon Altitudes during the 2001-2002 TIGER Flight", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universal Academy Press Inc.\n\nWe thank C. Cohen[2], J.George[4] and the rest of the\nSIS/CRIS instrument teams and Ace Science Center for providing the ACE data; This work supported by NASA grants NAG5-6912, NAG5-12929 and NAG5-5346\n\nPublished - 2003-42.pdf
", "abstract": "The Trans-Iron Galactic Element Recorder (TIGER) was launched on December 21, 2001 and flew for about 32 days on a long-duration balloon mission from McMurdo Base in Antarctica. On December 26, 2001 at about 5:30 UT, a\nground-level solar particle event (M7.6 flare) was observed by a number of neutron monitors. The SIS instrument aboard the ACE spacecraft measured the elemental composition and particle energy spectra up to \u223c150MeV/nuc. While not designed to operate under such conditions, TIGER data for the same period show interesting variations in the count rate and composition of the measured particles that may be related to the detection of heavy Solar particles (Si to Fe)\nin the \u223cGeV/nuc range. We discuss the TIGER observations in relation to other available data from this event.", "date": "2003", "date_type": "published", "publisher": "International Union of Applied Physics", "id_number": "CaltechAUTHORS:20150403-093115681", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150403-093115681", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" }, { "agency": "NASA", "grant_number": "NAG5-12929" }, { "agency": "NASA", "grant_number": "NAG5-5346" } ] }, "other_numbering_system": { "items": [ { "id": "2003-42", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kajita-T", "name": { "family": "Kajita", "given": "Takaaki" } }, { "id": "Asaoka-Y", "name": { "family": "Asaoka", "given": "Y." } }, { "id": "Kawachi-A", "name": { "family": "Kawachi", "given": "A." } }, { "id": "Matsubara-Y", "name": { "family": "Matsubara", "given": "Y." } }, { "id": "Sasaki-M", "name": { "family": "Sasaki", "given": "M." } } ] }, "primary_object": { "basename": "2003-42.pdf", "url": "https://authors.library.caltech.edu/records/ntymf-03305/files/2003-42.pdf" }, "pub_year": "2003", "author_list": "Geier, S.; Barbier, L. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/byhnf-7eb73", "eprint_id": 56384, "eprint_status": "archive", "datestamp": "2023-08-19 10:35:54", "lastmod": "2023-10-23 15:21:46", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Israel-M-S", "name": { "family": "Israel", "given": "M. S." } }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Refractory Nuclides in the Cosmic-Ray Source", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universal Academy Press Inc.\n\nThis work was supported by NASA at Caltech (under grants\nNAG5-6912 and NAG5-12929), JPL, Washington U. and GSFC.\n\nPublished - 2003-18.pdf
", "abstract": "New observations of the abundances and energy spectra of the isotopes of\nMg, Al, and Si from ACE/CRIS are used to extend our previous results on the\ncomposition of refractory nuclides in cosmic-ray source material. For the 18 nuclides\nconsidered for elements between Mg and Ni, relative source abundances are\ngenerally consistent with solar-system values to within 20%. The ^(58)Fe abundance,\ntaken relative to ^(28)Si, is found to have the largest difference from solar, a factor\nof \u223c 1.6. We suggest that the compositional similarity between the cosmic-ray\nsource and the solar system can be understood in terms of acceleration of cosmicray\nrefractories out of a well-mixed sample of interstellar matter.", "date": "2003", "date_type": "published", "publisher": "International Union of Applied Physics", "id_number": "CaltechAUTHORS:20150406-133653562", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150406-133653562", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-12929" }, { "agency": "NASA", "grant_number": "NAG5-6912" }, { "agency": "Goddard Space Flight Center" }, { "agency": "Jet Propulsion Laboratory" }, { "agency": "Washington University" } ] }, "other_numbering_system": { "items": [ { "id": "2003-16", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kajita-T", "name": { "family": "Kajita", "given": "Takaaki" } }, { "id": "Asaoka-Y", "name": { "family": "Asaoka", "given": "Y." } }, { "id": "Kawachi-A", "name": { "family": "Kawachi", "given": "A." } }, { "id": "Matsubara-Y", "name": { "family": "Matsubara", "given": "Y." } }, { "id": "Sasaki-M", "name": { "family": "Sasaki", "given": "M." } } ] }, "primary_object": { "basename": "2003-18.pdf", "url": "https://authors.library.caltech.edu/records/byhnf-7eb73/files/2003-18.pdf" }, "pub_year": "2003", "author_list": "Wiedenbeck, M. E.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/2yegx-d5e02", "eprint_id": 56395, "eprint_status": "archive", "datestamp": "2023-08-19 10:36:07", "lastmod": "2023-10-23 15:22:08", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Lijowski-M", "name": { "family": "Lijowski", "given": "M." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Extended Energy Spectrum Measurement of Elements With the Cosmic Ray Isotope Spectrometer (CRIS)", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universal Academy Press Inc.\n\nThis work was supported by NASA at NASA/GSFC, California Inst. of Tech., Jet Propulsion Laboratory, and Washington University.\n\nPublished - 2003-21.pdf
", "abstract": "We describe a multiple dE/dx technique used to identify particles that penetrate through the bottom of the CRIS instrument, significantly extending the measured energy ranges for major elements beyond that for stopping particles. In preliminary analysis, the upper energy limit for oxygen has been extended from \u223c240 MeV/nuc for stopping particles to \u223c410 MeV/nuc for penetrating particles, and the upper energy limit for iron has been extended from \u223c470 MeV/nuc to \u223c670 MeV/nuc. We report new element intensities in these extended energy ranges, and compare them with previously reported intensities and with spectra derived using cosmic ray transport and solar modulation models.", "date": "2003", "date_type": "published", "publisher": "International Union of Applied Physics", "id_number": "CaltechAUTHORS:20150406-143812415", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150406-143812415", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA/Goddard Space Flight Center (GSFC)" }, { "agency": "California Institute of Technology" }, { "agency": "Jet Propulsion Laboratory" }, { "agency": "Washington University" } ] }, "other_numbering_system": { "items": [ { "id": "2003-21", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kajita-T", "name": { "family": "Kajita", "given": "Takaaki" } }, { "id": "Asaoka-Y", "name": { "family": "Asaoka", "given": "Y." } }, { "id": "Kawachi-A", "name": { "family": "Kawachi", "given": "A." } }, { "id": "Matsubara-Y", "name": { "family": "Matsubara", "given": "Y." } }, { "id": "Sasaki-M", "name": { "family": "Sasaki", "given": "M." } } ] }, "primary_object": { "basename": "2003-21.pdf", "url": "https://authors.library.caltech.edu/records/2yegx-d5e02/files/2003-21.pdf" }, "pub_year": "2003", "author_list": "Labrador, A. W.; Yanasak, N. E.; et el." }, { "id": "https://authors.library.caltech.edu/records/as1zh-myv72", "eprint_id": 56328, "eprint_status": "archive", "datestamp": "2023-08-19 10:35:03", "lastmod": "2023-10-23 15:19:18", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Florinski-V", "name": { "family": "Florinski", "given": "V." }, "orcid": "0000-0001-5485-2872" }, { "id": "Jokipii-J-R", "name": { "family": "Jokipii", "given": "J. R." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Zank-G-P", "name": { "family": "Zank", "given": "G. P." }, "orcid": "0000-0002-4642-6192" } ] }, "title": "Heliospheric Termination Shock Mediation by Anomalous Cosmic Rays: Insights from Recent Voyager Data", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universal Academy Press Inc.\n\nPublished - 2003-37.pdf
", "abstract": "The two Voyager spacecraft provide valuable information about the energetic\nparticle population near the termination shock (TS), such as the anomalous\ncosmic ray (ACR) spectra, the intensity gradients, and the radial diffusion coefficients\nobtained from anisotropy measurements. While the spectra and gradients have been modeled successfully using the test-particle approach, the shock modification by the ACR pressure gradient has not yet been addressed in the full\ncontext of the available data. Here we present the results of a self-consistent axisymmetric model of the solar wind modified by both charge exchange and ACR pressure gradients. Our results indicate that during solar minima anomalous cosmic rays with energies above 100 keV are not likely to have a significant impact on the properties of the termination shock.", "date": "2003", "date_type": "published", "publisher": "International Union of Applied Physics", "id_number": "CaltechAUTHORS:20150403-082902784", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150403-082902784", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "2003-37", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kajita-T", "name": { "family": "Kajita", "given": "Takaaki" } }, { "id": "Asaoka-Y", "name": { "family": "Asaoka", "given": "Y." } }, { "id": "Kawachi-A", "name": { "family": "Kawachi", "given": "A." } }, { "id": "Matsubara-Y", "name": { "family": "Matsubara", "given": "Y." } }, { "id": "Sasaki-M", "name": { "family": "Sasaki", "given": "M." } } ] }, "primary_object": { "basename": "2003-37.pdf", "url": "https://authors.library.caltech.edu/records/as1zh-myv72/files/2003-37.pdf" }, "pub_year": "2003", "author_list": "Florinski, V.; Jokipii, J. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/xv997-g7917", "eprint_id": 56382, "eprint_status": "archive", "datestamp": "2023-08-19 10:35:49", "lastmod": "2023-10-23 15:21:43", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "The Unusual Solar Particle Events of August 2002", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universal Academy Press Inc.\n\nThis work was funded by NASA at Caltech (under grants NAG5-6912 and NAG5-12929), JPL, and the Goddard Space Flight Center. Details on solar activity and GOES data were obtained from NOAA through the Space Environment Center web site. We thank the ACE/EPAM, Wind/WAVES, and SOHO/LASCO teams for making their data public.\n\nPublished - 2003-11.pdf
", "abstract": "Several highly unusual solar particle events occurred in August 2002, with high ^3^He/^4He ratios and enormous enhancements of heavy isotopes [5]. By examining\nproton, electron, and heavy ion intensities, H\u03b1, X-ray, and radio flares and particle arrival times relative to them and to coronal mass ejections, we find that the 20 August 2002 event was the largest impulsive event yet seen in this solar cycle at energies >10 MeV/nucleon.", "date": "2003", "date_type": "published", "publisher": "International Union of Applied Physics", "id_number": "CaltechAUTHORS:20150406-132624126", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150406-132624126", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" }, { "agency": "NASA", "grant_number": "NAG5-12929" } ] }, "other_numbering_system": { "items": [ { "id": "2003-11", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kajita-Takaaki", "name": { "family": "Kajita", "given": "Takaaki" } }, { "id": "Asaoka-Y", "name": { "family": "Asaoka", "given": "Y." } }, { "id": "Kawachi-A", "name": { "family": "Kawachi", "given": "A." } }, { "id": "Matsubara-Y", "name": { "family": "Matsubara", "given": "Y." } }, { "id": "Sasaki-Misao", "name": { "family": "Sasaki", "given": "M." } } ] }, "primary_object": { "basename": "2003-11.pdf", "url": "https://authors.library.caltech.edu/records/xv997-g7917/files/2003-11.pdf" }, "pub_year": "2003", "author_list": "Leske, R. A.; Wiedenbeck, M. E.; et el." }, { "id": "https://authors.library.caltech.edu/records/qa19z-t0w96", "eprint_id": 56385, "eprint_status": "archive", "datestamp": "2023-08-19 10:35:58", "lastmod": "2023-10-23 15:21:49", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "New Measurement of the Li, Be, an B Isotopes as a Test of Cosmic Ray Transport Models", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universal Academy Press Inc.\n\nThis work was supported by NASA at NASA/GSFC, California Inst. of Tech., Jet Propulsion Laboratory, and Washington University.\n\nPublished - 2003-20.pdf
", "abstract": "Precise measurements of predominantly secondary cosmic-ray Li, Be, and B together with current well-measured production cross-sections for these isotopes help to\nimprove our understanding of galactic cosmic ray propagation models. The Cosmic Ray Isotope Spectrometer (CRIS) on ACE has been measuring isotopic composition of cosmic rays since 1997 with high statistical precision. We present the isotopic abundances from CRIS and discuss these observations in the context of cosmic-ray transport models\nand previous cosmic-ray measurements.", "date": "2003", "date_type": "published", "publisher": "International Union of Applied Physics", "id_number": "CaltechAUTHORS:20150406-135715114", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150406-135715114", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" }, { "agency": "California Institute of Technology" }, { "agency": "JPL" }, { "agency": "Washington University" } ] }, "other_numbering_system": { "items": [ { "id": "2003-20", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kajita-T", "name": { "family": "Kajita", "given": "Takaaki" } }, { "id": "Asaoka-Y", "name": { "family": "Asaoka", "given": "Y." } }, { "id": "Kawachi-A", "name": { "family": "Kawachi", "given": "A." } }, { "id": "Matsubara-Y", "name": { "family": "Matsubara", "given": "Y." } }, { "id": "Sasaki-M", "name": { "family": "Sasaki", "given": "M." } } ] }, "primary_object": { "basename": "2003-20.pdf", "url": "https://authors.library.caltech.edu/records/qa19z-t0w96/files/2003-20.pdf" }, "pub_year": "2003", "author_list": "de Nolfo, G. A.; Yanasak, N. E.; et el." }, { "id": "https://authors.library.caltech.edu/records/ca5y9-skt27", "eprint_id": 56334, "eprint_status": "archive", "datestamp": "2023-08-19 10:35:22", "lastmod": "2023-10-23 15:19:35", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Link-J-T", "name": { "family": "Link", "given": "J. T." } }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "Geier-S", "name": { "family": "Geier", "given": "S." }, "orcid": "0000-0002-3948-9339" }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Scott-L-M", "name": { "family": "Scott", "given": "L. M." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } } ] }, "title": "Measurements of the Ultra-Heavy Galactic Cosmic-Ray Abundances between Z=30 and Z=40 with the TIGER Instrument", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universal Academy Press Inc.\n\nThis research was supported by the National Aeronautics\nand Space Adminstration under grant NAGS-5078. JTL was futher supported by a NASA GSRP grant NGT5-50240.\n\nPublished - 2003-41.pdf
", "abstract": "The Trans-Iron Galactic Element.Recorder (TIGER) instrument was launched in December 2001 from McMurdo, Antarctica. TIGER is a cosmic-ray telescope that uses four scintillation counters, two Cherenkov detectors and a scintillating fiber hodoscope to determine the charge (Z) and energy of a particle. During the 31.8 day flight it measured ~100 ultra-heavy galactic cosmic-ray (GCR) events\nwith Z > 30 and demonstrated charge resolution sufficient to resolve the individual elemental abundances in this region. The abundances of the Ultra-Heavy GCRs in this range can be used to distinguish between GCR source models. We present our measurements and discuss the implications for the GCR source.", "date": "2003", "date_type": "published", "publisher": "International Union of Applied Physics", "id_number": "CaltechAUTHORS:20150403-091555049", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150403-091555049", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGS-5078" }, { "agency": "NASA", "grant_number": "NGT5-50240" } ] }, "other_numbering_system": { "items": [ { "id": "203-41", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kajita-T", "name": { "family": "Kajita", "given": "Takaaki" } }, { "id": "Asaoka-Y", "name": { "family": "Asaoka", "given": "Y." } }, { "id": "Kawachi-A", "name": { "family": "Kawachi", "given": "A." } }, { "id": "Matsubara-Y", "name": { "family": "Matsubara", "given": "Y." } }, { "id": "Sasaki-M", "name": { "family": "Sasaki", "given": "M." } } ] }, "primary_object": { "basename": "2003-41.pdf", "url": "https://authors.library.caltech.edu/records/ca5y9-skt27/files/2003-41.pdf" }, "pub_year": "2003", "author_list": "Link, J. T.; Barbier, L. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/kd8qh-prq67", "eprint_id": 56340, "eprint_status": "archive", "datestamp": "2023-08-19 10:35:35", "lastmod": "2023-10-23 15:19:54", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Tylka-A-J", "name": { "family": "Tylka", "given": "A. J." } }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Dietrich-W-F", "name": { "family": "Dietrich", "given": "W. F." } }, { "id": "Kruker-S", "name": { "family": "Krucker", "given": "S." } }, { "id": "McGuire-R-E", "name": { "family": "McGuire", "given": "R. E." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Ng-C-K", "name": { "family": "Ng", "given": "C. K." } }, { "id": "Reames-D-V", "name": { "family": "Reames", "given": "D. V." } }, { "id": "Share-G-H", "name": { "family": "Share", "given": "G. H." } } ] }, "title": "Onsets and Release Times in Solar Particle Events", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universal Academy Press Inc.\n\nWe thank K. Hurley, C. Lopate, R. Pyle, I. Usoskin, and E. Vashenyuk for data. AJT supported by NASA DPR S-13791G and the Office of Naval Research.\n\nPublished - 2003-13.pdf
", "abstract": "The time at which solar energetic particles (SEPs) are first released into interplanetary space, and its relation to CMEs and various photon emissions, are important clues to the site and nature of the SEP acceleration mechanism [1-\n5,7,8,10,11]. We examine velocity dispersion among onsets in electrons and ions from Wind, ACE, and IMPB, as well as available neutron monitors, to determine the solar release time. We present results for two large impulsive events (1 May 2000 and 14 April 2001) and three western ground level events (GLEs; 6 November 1997, 6 May 1998, and 15 April 2001). In the impulsive events, the particle release\ncoincides with hard x-ray emission. But the large GLEs show delayed release with respect to 1-ray emission, consistent with acceleration by the CME-driven shock.", "date": "2003", "date_type": "published", "publisher": "International Union of Applied Physics", "id_number": "CaltechAUTHORS:20150403-100248724", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150403-100248724", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "DPR S13791G" }, { "agency": "Office of Naval Research (ONR)" } ] }, "other_numbering_system": { "items": [ { "id": "2003-13", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kajita-Takaaki", "name": { "family": "Kajita", "given": "Takaaki" } }, { "id": "Asaoka-Y", "name": { "family": "Asaoka", "given": "Y." } }, { "id": "Kawachi-A", "name": { "family": "Kawachi", "given": "A." } }, { "id": "Matsubara-Y", "name": { "family": "Matsubara", "given": "Y." } }, { "id": "Sasaki-Misao", "name": { "family": "Sasaki", "given": "M." } } ] }, "primary_object": { "basename": "2003-13.pdf", "url": "https://authors.library.caltech.edu/records/kd8qh-prq67/files/2003-13.pdf" }, "pub_year": "2003", "author_list": "Tylka, A. J.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/5cpnd-ahj08", "eprint_id": 55596, "eprint_status": "archive", "datestamp": "2023-08-19 10:34:45", "lastmod": "2023-10-20 22:25:13", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" } ] }, "title": "The Approach of Voyager 1 to the Termination Shock", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright 2003 by Universal Academy Press, Inc.\n\nThis work was supported by NASA under contract NAS7-1407.\n\nPublished - 2003-33.pdf
", "abstract": "From 2001 to 2002 the anomalous cosmic ray (ACR) He intensity at 52\nMeV/nuc increased by a factor of \u223c2.2 at Voyager 1. The increase was larger\nat lower energies, indicating that Voyager 1 was 7.5\u00b12.2 AU closer to the termination\nshock in 2002. Since Voyager 1 moved outward 3.8 AU during this time,\nit appears the shock moved inward 3.7\u00b12.2 AU following short term transient\nmotions outward during solar maximum.", "date": "2003", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150306-112354854", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150306-112354854", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-1407" } ] }, "other_numbering_system": { "items": [ { "id": "2003-33", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kajita-T", "name": { "family": "Kajita", "given": "T." } }, { "id": "Asaoka-Y", "name": { "family": "Asaoka", "given": "Y." } }, { "id": "Kawachi-A", "name": { "family": "Kawachi", "given": "A." } }, { "id": "Matsubara-Y", "name": { "family": "Matsubara", "given": "Y." } }, { "id": "Sasaki-M", "name": { "family": "Sasaki", "given": "M." } } ] }, "primary_object": { "basename": "2003-33.pdf", "url": "https://authors.library.caltech.edu/records/5cpnd-ahj08/files/2003-33.pdf" }, "pub_year": "2003", "author_list": "Stone, E. C. and Cummings, A. C." }, { "id": "https://authors.library.caltech.edu/records/m4s05-nem50", "eprint_id": 56330, "eprint_status": "archive", "datestamp": "2023-08-19 10:35:07", "lastmod": "2023-10-23 15:19:24", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "McDonald-F-B", "name": { "family": "McDonald", "given": "F. B." } }, { "id": "Kota-J", "name": { "family": "Kota", "given": "J." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Jokipii-J-R", "name": { "family": "Jokipii", "given": "J. R." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Local Reacceleration of Galactic Cosmic Rays at the Heliosphere's Termination Shock", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universal Academy Press Inc.\n\nPublished - 2003-38.pdf
", "abstract": "The measured intensities in the ecliptic plane of the GCR He (265 MeV/n) and ACR Oxygen (7 - 17 MeV/n) at 70 AU over the solar minimum (1996-1998) of cycle 22 are significantly less than that observed over the 1987 solar minimum of\ncycle 21 at 42 AU. The GCR He at 42 AU is 36% greater than that at 70 AU while ACR O is 5x greater. The different intensity levels and their very different time histories in the opposite phases of the heliomagnetic cycle represent a challenge to modulation theory and must in part be a drift related effect.\n\nKota and Jokipii [1] have modelled the transport of GCRs and ACRs in a 1D model that includes a termination shock and a heliosheath region and in a 2D heliosphere that includes not only drifts but also the effects of an extended\nheliosheath region. They find that near the plane of the ecliptic in qA<0 cycles there is a significant enhancement of GCRs produced by local reacceleration in the heliosheath. This is accompanied by a much larger increase in the ACR O intensity, consistent with the Pioneer/Voyager observations.", "date": "2003", "date_type": "published", "publisher": "International Union of Applied Physics", "id_number": "CaltechAUTHORS:20150403-083725157", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150403-083725157", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "2003-38", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kajita-T", "name": { "family": "Kajita", "given": "Takaaki" } }, { "id": "Asaoka-Y", "name": { "family": "Asaoka", "given": "Y." } }, { "id": "Kawachi-A", "name": { "family": "Kawachi", "given": "A." } }, { "id": "Matsubara-Y", "name": { "family": "Matsubara", "given": "Y." } }, { "id": "Sasaki-M", "name": { "family": "Sasaki", "given": "M." } } ] }, "primary_object": { "basename": "2003-38.pdf", "url": "https://authors.library.caltech.edu/records/m4s05-nem50/files/2003-38.pdf" }, "pub_year": "2003", "author_list": "McDonald, F. B.; Kota, J.; et el." }, { "id": "https://authors.library.caltech.edu/records/14ep6-q9c68", "eprint_id": 55554, "eprint_status": "archive", "datestamp": "2023-08-19 10:34:36", "lastmod": "2023-10-20 22:23:09", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "The ^3He-Rich SEP Events of August 2002: Exceptional Elemental and Isotopic Composition Patterns at Energies Above 10 MeV / Nucleon", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright 2003 by Universal Academy Press, Inc.\n\nThis work was supported by NASA at Caltech (under grants\nNAG5-6912 and NAG5-12929), JPL, and GSFC.", "abstract": "Heavy-ion composition observations from the Solar Isotope Spectrometer on ACE are reported for four ^3He-rich solar-energetic-particle (SEP) events that occurred in August 2002. The abundance enhancement patterns are not monotonic\nfunctions of atomic number (or mass), such as is commonly found in 3He-rich events, but have large enhancements of abundance ratios between some neighboring elements (e.g., N/O) and between isotopes of some elements (e.g., 26Mg/24Mg). The possibility that these patterns could be indicative resonant acceleration of particles within a narrow range of charge-to-mass ratios is considered.", "date": "2003", "date_type": "published", "publisher": "Universal Academy Press", "id_number": "CaltechAUTHORS:20150305-150054215", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150305-150054215", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" }, { "agency": "NASA", "grant_number": "NAG5-12929" } ] }, "other_numbering_system": { "items": [ { "id": "2003-10", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kajita-T", "name": { "family": "Kajita", "given": "T." } }, { "id": "Asaoka-Y", "name": { "family": "Asaoka", "given": "Y." } }, { "id": "Kawachi-A", "name": { "family": "Kawachi", "given": "A." } }, { "id": "Matsubara-Y", "name": { "family": "Matsubara", "given": "Y." } }, { "id": "Sasaki-Misao", "name": { "family": "Sasaki", "given": "M." } } ] }, "primary_object": { "basename": "2003-10.pdf", "url": "https://authors.library.caltech.edu/records/14ep6-q9c68/files/2003-10.pdf" }, "pub_year": "2003", "author_list": "Wiedenbeck, M. E.; Leske, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/9jmc6-pnc15", "eprint_id": 55600, "eprint_status": "archive", "datestamp": "2023-08-19 10:34:49", "lastmod": "2023-10-20 22:25:25", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Burlaga-L-F", "name": { "family": "Burlaga", "given": "L. F." }, "orcid": "0000-0002-5569-1553" }, { "id": "Ness-N-F", "name": { "family": "Ness", "given": "N. F." } }, { "id": "McDonald-F-B", "name": { "family": "McDonald", "given": "F. B." } }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "Voyager 1 Observations of the Anisotropies of Enhanced MeV Ion Fluxes at 85 AU", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright 2003 by Universal Academy Press, Inc.\n\nPublished - 2003-36.pdf
", "abstract": "We report on the diffusive flow anisotropies observed in low-energy protons during intensity increases at Voyager 1 in 2001 and 2002. We propose that the unusual increased intensities after mid-2002 are due to particles accelerated by the solar wind termination shock or by the turbulent interface between the high-speed and low-speed solar wind flows.", "date": "2003", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150306-115444610", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150306-115444610", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "2003-36", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kajita-T", "name": { "family": "Kajita", "given": "T." } }, { "id": "Asaoka-Y", "name": { "family": "Asaoka", "given": "Y." } }, { "id": "Kawachi-A", "name": { "family": "Kawachi", "given": "A." } }, { "id": "Matsubara-Y", "name": { "family": "Matsubara", "given": "Y." } }, { "id": "Sasaki-M", "name": { "family": "Sasaki", "given": "M." } } ] }, "primary_object": { "basename": "2003-36.pdf", "url": "https://authors.library.caltech.edu/records/9jmc6-pnc15/files/2003-36.pdf" }, "pub_year": "2003", "author_list": "Cummings, A. C.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/wpxxz-x6231", "eprint_id": 56338, "eprint_status": "archive", "datestamp": "2023-08-19 10:35:30", "lastmod": "2023-10-23 15:19:46", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Desai-S", "name": { "family": "Desai", "given": "S." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mazur-J-E", "name": { "family": "Mazur", "given": "J. E." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Impulsive Flare Material: A Seed Population for Large Solar Particle Events?", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universal Academy Press Inc.\n\nSupported by NASA at participating institutions.\n\nPublished - 2003-12.pdf
", "abstract": "It has been suggested that gradual solar energetic particle (SEP) events enriched in ^3He and Fe result from the shock acceleration of remnant interplanetary material from previous impulsive flares. We test this hypothesis by comparing the number densities of Fe ions during quiet periods, ^3He-rich periods, and Ferich SEP events. We find that there is not a sufficient density of suprathermal\nFe during typical quiet periods (or ^3He-rich periods) to account for the overall enrichment of Fe in and suggest other possibilities for interpreting these events.", "date": "2003", "date_type": "published", "publisher": "International Union of Applied Physics", "id_number": "CaltechAUTHORS:20150403-094053625", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150403-094053625", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "2003-12", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kajita-T", "name": { "family": "Kajita", "given": "Takaaki" } }, { "id": "Asaoka-Y", "name": { "family": "Asaoka", "given": "Y." } }, { "id": "Kawachi-A", "name": { "family": "Kawachi", "given": "A." } }, { "id": "Matsubara-Y", "name": { "family": "Matsubara", "given": "Y." } }, { "id": "Sasaki-Misao", "name": { "family": "Sasaki", "given": "M." } } ] }, "primary_object": { "basename": "2003-12.pdf", "url": "https://authors.library.caltech.edu/records/wpxxz-x6231/files/2003-12.pdf" }, "pub_year": "2003", "author_list": "Mewaldt, R. A.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/xmgge-qmf59", "eprint_id": 56333, "eprint_status": "archive", "datestamp": "2023-08-19 10:35:17", "lastmod": "2023-10-23 15:19:32", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "High Energy Ionic Charge State Composition In Recent Large Solar Energetic Particle Events", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universal Academy Press Inc.\n\nThis work was supported by NASA at Caltech (under\ngrant NAG5-8877) and at the Goddard Space Flight Center.\n\nPublished - 2003-40.pdf
", "abstract": "The ionic charge states of solar energetic particles (SEPs) provide information on the temperature of source materials and on conditions during acceleration and transport. SAMPEX/MAST measures mean ionic charge states at\n> 15 MeV/nuc using the geomagnetic rigidity filter technique. Charge state measurements by MAST for gradual SEP events suggest a continuum of charge states\ncorrelated with abundance ratios for a variety of elements, similar to what is observed at lower energies. In cases where lower energy measurements are also available, the combined measurements indicate energy dependent charge states. We have completed ionic charge state measurements for 17 SEP events from solar cycle 23. We discuss the implications of our results.", "date": "2003", "date_type": "published", "publisher": "International Union of Applied Physics", "id_number": "CaltechAUTHORS:20150403-090650084", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150403-090650084", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-8877" } ] }, "other_numbering_system": { "items": [ { "id": "2003-40", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kajita-T", "name": { "family": "Kajita", "given": "Takaaki" } }, { "id": "Asaoka-Y", "name": { "family": "Asaoka", "given": "Y." } }, { "id": "Kawachi-A", "name": { "family": "Kawachi", "given": "A." } }, { "id": "Matsubara-Y", "name": { "family": "Matsubara", "given": "Y." } }, { "id": "Sasaki-M", "name": { "family": "Sasaki", "given": "M." } } ] }, "primary_object": { "basename": "2003-40.pdf", "url": "https://authors.library.caltech.edu/records/xmgge-qmf59/files/2003-40.pdf" }, "pub_year": "2003", "author_list": "Labrador, A. W.; Leske, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/qmhkh-wqc50", "eprint_id": 56342, "eprint_status": "archive", "datestamp": "2023-08-19 10:35:40", "lastmod": "2023-10-23 15:20:00", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Haggerty-D-K", "name": { "family": "Haggerty", "given": "D. K." }, "orcid": "0000-0001-6395-8943" }, { "id": "Gold-R-E", "name": { "family": "Gold", "given": "R. E." } }, { "id": "Krimigis-S-M", "name": { "family": "Krimigis", "given": "S. M." }, "orcid": "0000-0003-2781-2386" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Ogliore-R-C", "name": { "family": "Ogliore", "given": "R. C." } }, { "id": "Roelof-E-C", "name": { "family": "Roelof", "given": "E. C." }, "orcid": "0000-0002-2270-0652" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Heavy Ion and Electron Release Times in Solar Particle Events", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Universal Academy Press Inc.\n\nSupported by NASA at Caltech (under grants NAG5-\n6912 and NAG5-12929), APL, JPL, and GSFC.\n\nPublished - 2003-14.pdf
", "abstract": "Using data from the SIS and EPAM instruments on ACE we have measured the onset times of 6 - 88 MeV/nuc ions and 38 - 315 keV electrons in 11 solar energetic particle (SEP) events from 1997 through 2002. We find that heavy ions\nare generally released later than electrons, by as much as \u223c50 minutes. There is an apparent correlation between the release times (and the inferred release distances) and the 3He/4He ratio.", "date": "2003", "date_type": "published", "publisher": "International Union of Applied Physics", "id_number": "CaltechAUTHORS:20150403-101535232", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150403-101535232", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" }, { "agency": "NASA", "grant_number": "NAG5-12929" } ] }, "other_numbering_system": { "items": [ { "id": "2003-14", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kajita-T", "name": { "family": "Kajita", "given": "Takaaki" } }, { "id": "Asaoka-Y", "name": { "family": "Asaoka", "given": "Y." } }, { "id": "Kawachi-A", "name": { "family": "Kawachi", "given": "A." } }, { "id": "Matsubara-Y", "name": { "family": "Matsubara", "given": "Y." } }, { "id": "Sasaki-Misao", "name": { "family": "Sasaki", "given": "M." } } ] }, "primary_object": { "basename": "2003-14.pdf", "url": "https://authors.library.caltech.edu/records/qmhkh-wqc50/files/2003-14.pdf" }, "pub_year": "2003", "author_list": "Mewaldt, R. A.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/5rmp2-jr938", "eprint_id": 48908, "eprint_status": "archive", "datestamp": "2023-08-19 09:34:32", "lastmod": "2024-01-13 16:08:11", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" } ] }, "title": "Location of the Termination Shock at Solar Maximum", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2003 American Institute of Physics. Published online 02 September 2003. We thank W. R. Webber for providing Pioneer 10 data. The V2 solar wind data was obtained from J. Richardson and the MIT Space Plasma Group at their website\nhttp://web.mit.edu/space/www/voyager.html\n\nPublished - 1.1618538.pdf
", "abstract": "During the recent solar maximum, Voyager 1 was beyond 80 AU. Extrapolation of the small gradients of anomalous cosmic rays at solar minimum and the larger gradients at solar maximum indicate that the solar wind termination shock is at \u2272 92 AU at the beginning of 2002.", "date": "2002-06", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "47-50", "id_number": "CaltechAUTHORS:20140826-104958666", "isbn": "0-7354-0148-9", "book_title": "Solar Wind Ten Proceedings", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140826-104958666", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "2002-05", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Velli-M", "name": { "family": "Velli", "given": "M." } }, { "id": "Bruno-R", "name": { "family": "Bruno", "given": "R." } }, { "id": "Malara-F", "name": { "family": "Malara", "given": "F." } } ] }, "doi": "10.1063/1.1618538", "primary_object": { "basename": "1.1618538.pdf", "url": "https://authors.library.caltech.edu/records/5rmp2-jr938/files/1.1618538.pdf" }, "pub_year": "2002", "author_list": "Stone, E. C. and Cummings, A. C." }, { "id": "https://authors.library.caltech.edu/records/a28wf-j2095", "eprint_id": 27832, "eprint_status": "archive", "datestamp": "2023-08-19 08:34:05", "lastmod": "2024-01-13 05:47:31", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } } ] }, "title": "The Phosphorus/Sulfur Abundance Ratio as a Test of Galactic Cosmic-Ray Source Models", "ispublished": "unpub", "full_text_status": "public", "keywords": "galactic cosmic rays, cosmic ray composition, element relative abundance, phosphorus, sulphur, solar system, ionisation potential, cosmic ray propagation, modelling", "note": "\u00a9 2001 American Institute of Physics. Issue Date: 21 November 2001. This work was supported by NASA at the California Institute of Technology (under grant NAG5-6912), the Jet Propulsion Laboratory, the Goddard Space Flight\nCenter, and Washington University.\n\nPublished - GEOaipcp01.pdf
", "abstract": "Galactic cosmic-ray (GCR) elemental abundances display a fractionation compared to solar-system values that appears ordered by atomic properties such as the first ionization potential (FIP) or condensation temperature (volatility). Determining which parameter controls the observed fractionation is crucial to distinguish between GCR origin models. The Cosmic-Ray Isotope Spectrometer (CRIS) instrument on board NASA's Advanced Composition Explorer (ACE) spacecraft can measure the abundances of several elements that break the general correlation between FIP and volatility (e.g., Na, P, K, Cu, Zn, Ga, and Ge). Phosphorus is a particularly interesting case as it is a refractory (high condensation temperature) element with a FIP value nearly identical to that of its semi-volatile neighbor, sulfur. Using a leaky-box galactic propagation model we find that the P/S and Na/Mg ratios in the GCR source favor volatility as the controlling parameter.", "date": "2001-11-21", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, N.Y.", "pagerange": "263-268", "id_number": "CaltechAUTHORS:20111117-112058199", "isbn": "0-7354-0042-3", "book_title": "Solar and Galactic Composition", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111117-112058199", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" }, { "agency": "JPL" }, { "agency": "Goddard Space Flight Center" }, { "agency": "Washington University" } ] }, "other_numbering_system": { "items": [ { "id": "2001-62", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Wimmer-Schweingruber-R-F", "name": { "family": "Wimmer-Schweingruber", "given": "R. F." } } ] }, "doi": "10.1063/1.1434009", "primary_object": { "basename": "GEOaipcp01.pdf", "url": "https://authors.library.caltech.edu/records/a28wf-j2095/files/GEOaipcp01.pdf" }, "pub_year": "2001", "author_list": "George, J. S.; Wiedenbeck, M. E.; et el." }, { "id": "https://authors.library.caltech.edu/records/1n4w5-10g57", "eprint_id": 27819, "eprint_status": "archive", "datestamp": "2023-08-19 08:33:54", "lastmod": "2024-01-13 05:47:23", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Busemann-H", "name": { "family": "Busemann", "given": "H." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Chiappini-C", "name": { "family": "Chiappini", "given": "C." } }, { "id": "Gloeckler-G", "name": { "family": "Gloeckler", "given": "G." } }, { "id": "Hoppe-P", "name": { "family": "Hoppe", "given": "P." } }, { "id": "Kirilova-D", "name": { "family": "Kirilova", "given": "D." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Manuel-O-K", "name": { "family": "Manuel", "given": "O. K." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "M\u00f6bius-E", "name": { "family": "M\u00f6bius", "given": "E." } }, { "id": "Wieler-R", "name": { "family": "Wieler", "given": "R." }, "orcid": "0000-0001-5666-7494" }, { "id": "Wiens-R-C", "name": { "family": "Wiens", "given": "R. C." }, "orcid": "0000-0002-3409-7344" }, { "id": "Wimmer-Schweingruber-R-F", "name": { "family": "Wimmer-Schweingruber", "given": "R. F." } }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } } ] }, "title": "Applications of Abundance Data and Requirements for Cosmochemical Modeling", "ispublished": "unpub", "full_text_status": "public", "keywords": "cosmology, element relative abundance, nucleosynthesis, star formation, isotope relative abundance, solar system, solar wind, cosmic dust, interstellar matter, cosmic rays", "note": "\u00a9 2001 American Institute of Physics. Issue Date: 21 November 2001. We thank the organizing committee of the\nSOHO/ACE Workshop held at the University of Bern,\nSwitzerland, for bringing us together. This resulted in\nfruitful cross-disciplinary discussions, which we hope\nto be at least partly reflected in this contribution.\n\nPublished - BUSaipcp01.pdf
", "abstract": "Understanding the evolution of the universe from Big Bang to its present state requires an understanding of the evolution of the abundances of the elements and isotopes in galaxies, stars, the interstellar medium, the Sun and the heliosphere, planets and meteorites. Processes that change the state of the universe include Big Bang nucleosynthesis, star formation and stellar nucleosynthesis, galactic chemical evolution, propagation of cosmic rays, spallation, ionization and particle transport of interstellar material, formation of the solar system, solar wind emission and its fractionation (FIP/FIT effect), mixing processes in stellar interiors, condensation of material and subsequent geochemical fractionation. Here, we attempt to compile some major issues in cosmochemistry that can be addressed with a better knowledge of the respective element or isotope abundances. Present and future missions such as Genesis, Stardust, Interstellar Pathfinder, and Interstellar Probe, improvements of remote sensing instrumentation and experiments on extraterrestrial material such as meteorites, presolar grains, and lunar or returned planetary or cometary samples will result in an improved database of elemental and isotopic abundances. This includes the primordial abundances of D, ^3He, ^4He, and ^7Li, abundances of the heavier elements in stars and galaxies, the composition of the interstellar medium, solar wind and comets as well as the (highly) volatile elements in the solar system such as helium, nitrogen, oxygen or xenon.", "date": "2001-11-21", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, N.Y.", "pagerange": "357-379", "id_number": "CaltechAUTHORS:20111116-154615097", "isbn": "0-7354-0042-3", "book_title": "Solar and Galactic Composition", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111116-154615097", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Wimmer-Schweingruber-R-F", "name": { "family": "Wimmer-Schweingruber", "given": "R. F." } } ] }, "doi": "10.1063/1.1434025", "primary_object": { "basename": "BUSaipcp01.pdf", "url": "https://authors.library.caltech.edu/records/1n4w5-10g57/files/BUSaipcp01.pdf" }, "pub_year": "2001", "author_list": "Busemann, H.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/609ya-bb713", "eprint_id": 27850, "eprint_status": "archive", "datestamp": "2023-08-19 08:34:16", "lastmod": "2024-01-13 05:47:49", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Isotopic Abundances in the Solar Corona as Inferred from\n ACE Measurements of Solar Energetic Particles", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar corona, solar wind, isotope relative abundance, element relative abundance, astronomical instruments, time series", "note": "\u00a9 2001 American Institute of Physics. Issue Date: 21 November 2001. This research was supported by NASA at the California Institute of Technology (under grant NAG5-6912), the Jet Propulsion Laboratory, and the Goddard Space Flight\nCenter.\n\nPublished - LESaipcp01b.pdf
", "abstract": "The isotopic composition of solar energetic particles (SEPs) has been measured using the Solar Isotope Spectrometer on the Advanced Composition Explorer. The measurements include up to 12 isotope abundance ratios for ten elements from C through Ni at energies of tens of MeV/nucleon in 18 large SEP events that have occurred since November 1997. These measurements clearly establish that SEP isotopic composition can vary widely (by factors of >3) from event to event, presumably due to mass fractionation processes during particle acceleration and/or transport. Elemental and isotopic abundance ratios are strongly correlated, suggesting that elemental and isotopic fractionation relative to the coronal source are largely governed by the same processes. Using empirical correlations to correct for the fractionation and obtain the coronal isotopic composition yields preliminary abundance values in good agreement with those found in the solar wind, with comparable accuracy.", "date": "2001-11-21", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, N.Y.", "pagerange": "127-132", "id_number": "CaltechAUTHORS:20111118-094513677", "isbn": "0-7354-0042-3", "book_title": "Solar and Galactic Composition", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111118-094513677", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA/Caltech", "grant_number": "NAG5-6912" }, { "agency": "JPL" }, { "agency": "Goddard Space Flight Center" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Wimmer-Schweingruber-R-F", "name": { "family": "Wimmer-Schweingruber", "given": "R. F." } } ] }, "doi": "10.1063/1.1433990", "primary_object": { "basename": "LESaipcp01b.pdf", "url": "https://authors.library.caltech.edu/records/609ya-bb713/files/LESaipcp01b.pdf" }, "pub_year": "2001", "author_list": "Leske, R. A.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/xa5bc-4er33", "eprint_id": 27814, "eprint_status": "archive", "datestamp": "2023-08-19 08:33:49", "lastmod": "2024-01-13 05:47:21", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } } ] }, "title": "GCR Neon Isotopic Abundances: Comparison with Wolf-Rayet Star Models and Meteoritic Abundances", "ispublished": "unpub", "full_text_status": "public", "keywords": "galactic cosmic rays, cosmic ray composition, neon, isotope relative abundance, stellar models, Wolf-Rayet stars, meteorites", "note": "\u00a9 2001 American Institute of Physics. Issue Date: 21 November 2001. This research was supported by the National\nAeronautics and Space Administration at Washington\nUniversity, the California Institute of Technology (under\ngrant NAG5-6912), the Jet Propulsion Laboratory, and the\nGoddard Space Flight Center. It was also supported by the\nMcDonnell Center for the Space Sciences at Washington\nUniversity.\n\nPublished - BINaipcp01.pdf
", "abstract": "Measurements of the neon isotopic abundances from the ACE-CRIS experiment are presented. These abundances have been obtained in seven energy intervals over the energy range of ~80\u2264E\u2264280 MeV/nucleon. The ^(22)Ne/^(20)Ne source ratio is derived using the measured ^(21)Ne/^(20)Ne abundance as a \"tracer\" of secondary production of the neon isotopes. We find that the ^(22)Ne/^(20)Ne abundance ratio at the cosmic-ray source is a factor of 5.0\u00b10.2 greater than in the solar wind. The GCR ^(22)Ne/^(20)Ne ratio is also shown to be considerably larger than that found in anomalous cosmic rays, solar energetic particles, most meteoritic samples of matter, and interplanetary dust particles. Recent two-component Wolf-Rayet models provide predictions for the ^(22)Ne/^(20)Ne ratio and other isotope ratios. Comparison of the CRIS neon, iron, and nickel isotopic source abundance ratios with predictions indicate possible enhanced abundances of some neutron-rich nuclides that are expected to accompany the ^(22)Ne excess.", "date": "2001-11-21", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, N.Y.", "pagerange": "257-262", "id_number": "CaltechAUTHORS:20111116-133416059", "isbn": "0-7354-0042-3", "book_title": "Solar and Galatic Composition", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111116-133416059", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Washington University McDonnell Center for the Space Sciences" }, { "agency": "NASA", "grant_number": "NAG5-6912" }, { "agency": "JPL" }, { "agency": "Goddard Space Flight Center" } ] }, "other_numbering_system": { "items": [ { "id": "2001-60", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Wimmer-Schweingruber-R-F", "name": { "family": "Wimmer-Schweingruber", "given": "R. F." } } ] }, "doi": "10.1063/1.1434008", "primary_object": { "basename": "BINaipcp01.pdf", "url": "https://authors.library.caltech.edu/records/xa5bc-4er33/files/BINaipcp01.pdf" }, "pub_year": "2001", "author_list": "Binns, W. R.; Wiedenbeck, M. E.; et el." }, { "id": "https://authors.library.caltech.edu/records/m8v97-xh028", "eprint_id": 27845, "eprint_status": "archive", "datestamp": "2023-08-19 08:34:12", "lastmod": "2024-01-13 05:47:43", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Klecker-B", "name": { "family": "Klecker", "given": "B." } }, { "id": "Bothmer-V", "name": { "family": "Bothmer", "given": "V." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Keller-J-W", "name": { "family": "Keller", "given": "J. W." } }, { "id": "Salerno-E", "name": { "family": "Salerno", "given": "E." } }, { "id": "Sofia-U-J", "name": { "family": "Sofia", "given": "U. J." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Theilemann-F-K", "name": { "family": "Thielemann", "given": "F.-K." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Buclin-F", "name": { "family": "Buclin", "given": "F." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Fl\u00fcckiger-E-O", "name": { "family": "Fl\u00fcckiger", "given": "E. O." } }, { "id": "Hofer-M-Y", "name": { "family": "Hofer", "given": "M. Y." } }, { "id": "Jones-F-C", "name": { "family": "Jones", "given": "F. C." } }, { "id": "Kirilova-D", "name": { "family": "Kirilova", "given": "D." } }, { "id": "Kunow-H", "name": { "family": "Kunow", "given": "H." } }, { "id": "Laming-M", "name": { "family": "Laming", "given": "M." } }, { "id": "Tranquille-C", "name": { "family": "Tranquille", "given": "C." } }, { "id": "Wenzel-K-P", "name": { "family": "Wenzel", "given": "K.-P." } } ] }, "title": "Galactic Abundances: Report of Working Group 3", "ispublished": "unpub", "full_text_status": "public", "keywords": "Galaxy, element relative abundance, astronomical techniques, remote sensing, interstellar matter, solar system, meteorites, solar cosmic ray particles, stellar composition", "note": "\u00a9 2001 American Institute of Physics. Issue Date: 21 November 2001. We thank the organizers of the SOHO/ACE workshop on\n\"Solar and Galactic Composition\" for their hospitality.\n\nPublished - KLEaipcp01.pdf
", "abstract": "We summarize the various methods and their limitations and strengths to derive galactic abundances from in-situ and remote-sensing measurements, both from ground-based observations and from instruments in space. Because galactic abundances evolve in time and space it is important to obtain information with a variety of different methods covering different regions from the Very Local Insterstellar Medium (VLISM) to the distant galaxy, and different times throughout the evolution of the galaxy. We discuss the study of the present-day VLISM with neutral gas, pickup ions, and Anomalous Cosmic Rays, the study of the local interstellar medium (ISM) at distances <1.5 kpc utilizing absorption line measurements in H I clouds, and the study of galactic cosmic rays, sampling contemporary (~15 Myr) sources in the local ISM within a few kiloparsec of the solar system. Solar system abundances, derived from solar abundances and meteorite studies are discussed in several other chapters of this volume. They provide samples of matter from the ISM from the time of solar system format ion, about 4.5 Gyr ago. The evolution of galactic abundances on longer time scales is discussed in the context of nuclear synthesis in the various contributing stellar objects.", "date": "2001-11-21", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, N.Y.", "pagerange": "207-220", "id_number": "CaltechAUTHORS:20111118-075529994", "isbn": "0-7354-0042-3", "book_title": "Solar and Galactic Composition", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111118-075529994", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "2001-57", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Wimmer-Schweingruber-R-F", "name": { "family": "Wimmer-Schweingruber", "given": "R. F." } } ] }, "doi": "10.1063/1.1434002", "primary_object": { "basename": "KLEaipcp01.pdf", "url": "https://authors.library.caltech.edu/records/m8v97-xh028/files/KLEaipcp01.pdf" }, "pub_year": "2001", "author_list": "Klecker, B.; Bothmer, V.; et el." }, { "id": "https://authors.library.caltech.edu/records/9761w-rtt08", "eprint_id": 27822, "eprint_status": "archive", "datestamp": "2023-08-19 08:34:00", "lastmod": "2024-01-13 05:47:27", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Solar Coronal Abundances of Rare Elements Based on Solar\n Energetic Particles", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar corona, solar cosmic ray particles, element relative abundance, time series, astronomical instruments, space vehicles, solar activity", "note": "\u00a9 2001 American Institute of Physics. Issue Date: 21 November 2001. This work was supported by NASA at Caltech (under\ngrant NAG5-6912), Jet Propulsion Laboratory, and Goddard\nSpace Flight Center.\n\nPublished - COHaipcp01b.pdf
", "abstract": "Although solar energetic particle (SEP) abundances vary from event to event, it has been shown that by accounting for these variations it is possible to use SEP data to obtain reliable estimates of elemental abundances for the solar corona. We analyze ~20 to 65 MeV/nucleon measurements from the Solar Isotope Spectrometer on ACE in large SEP events observed from November 1997 to January 2001 to obtain new values of the average SEP composition of rare species, P, Cl, K, Ti, Mn, Cr, Co, Cu, and Zn, which have had limited statistical accuracy in SEPs in the past. The measured SEP abundances are compared with other sources of solar-system composition data.", "date": "2001-11-21", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, N.Y.", "pagerange": "107-112", "id_number": "CaltechAUTHORS:20111117-080853257", "isbn": "0-7354-0042-3", "book_title": "Solar and Galactic Composition", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111117-080853257", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" }, { "agency": "JPL" }, { "agency": "Goddard Space Flight Center" } ] }, "other_numbering_system": { "items": [ { "id": "2003-24", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Wimmer-Schweingruber-R-F", "name": { "family": "Wimmer-Schweingruber", "given": "R. F." } } ] }, "doi": "10.1063/1.1433987", "primary_object": { "basename": "COHaipcp01b.pdf", "url": "https://authors.library.caltech.edu/records/9761w-rtt08/files/COHaipcp01b.pdf" }, "pub_year": "2001", "author_list": "Cohen, C. M. S.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/dwwh0-vtg11", "eprint_id": 27865, "eprint_status": "archive", "datestamp": "2023-08-19 08:34:22", "lastmod": "2024-01-13 05:48:09", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "St-Cyr-O-C", "name": { "family": "St. Cyr", "given": "O. C." }, "orcid": "0000-0001-8906-6097" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Time Variations in Elemental Abundances in Solar Energetic\n Particle Events", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar cosmic ray particles, element relative abundance, time series, acceleration, shock waves, solar corona, space telemetry", "note": "\u00a9 2001 American Institute of Physics. Issue Date: 21 November 2001. This research was supported by the National Aeronautics and Space Administration at the Goddard Space Flight Center, the California Institute of Technology (under grant NAG5-6912), and the Jet Propulsion Laboratory. TvR acknowledges assistance from Hilary Cane with determining associated solar event locations.\n\nPublished - ROSaipcp01.pdf
", "abstract": "The Solar Isotope Spectrometer (SIS) on-board the Advanced Composition Explorer has a large collection power and high telemetry rate, making it possible to study elemental abundances in large solar energetic particle (SEP) events as a function of time. Results have now been obtained for more than 25 such events. Understanding the causes of these variations is key to obtaining reliable solar elemental abundances and to understanding solar acceleration processes. Such variations have been previously attributed to two models: (1) a mixture of an initial impulsive phase having enhanced heavy element abundances with a longer gradual phase with coronal abundances and (2) rigidity dependent escape from CME-driven shocks through plasma waves generated by wave-particle interactions. In this second model the injected abundances are assumed to be coronal. Both these models can be expected to depend upon solar longitude since impulsive events are associated with flares at longitudes well-connected magnetically to the observer, and shock properties and connection of the observer to the shock are also longitude dependent. We present results on temporal variations from event to event and within events and show that they appear to have a longitude dependence. We show that the events which have been well-explained by model (2) tend to be near central meridian or the west limb. In addition, we show that there are events with little time variation and heavy element enhancements similar to those of impulsive events. These events seem to be better explained by model (1) with only an impulsive phase.", "date": "2001-11-21", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, N.Y.", "pagerange": "343-348", "id_number": "CaltechAUTHORS:20111118-134937338", "isbn": "0-7354-0042-3", "book_title": "Solar and Galactic Composition", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111118-134937338", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" }, { "agency": "Caltech/JPL" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Wimmer-Schweingruber-R-F", "name": { "family": "Wimmer-Schweingruber", "given": "R. F." } } ] }, "doi": "10.1063/1.1434022", "primary_object": { "basename": "ROSaipcp01.pdf", "url": "https://authors.library.caltech.edu/records/dwwh0-vtg11/files/ROSaipcp01.pdf" }, "pub_year": "2001", "author_list": "von Rosenvinge, T. T.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/4nf5h-9a628", "eprint_id": 27855, "eprint_status": "archive", "datestamp": "2023-08-21 22:44:00", "lastmod": "2024-01-13 05:47:57", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Gloeckler-G", "name": { "family": "Gloeckler", "given": "G." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "Dwyer-J-R", "name": { "family": "Dwyer", "given": "J. R." } }, { "id": "Gold-R-E", "name": { "family": "Gold", "given": "R. E." } }, { "id": "Krimigis-S-M", "name": { "family": "Krimigis", "given": "S. M." }, "orcid": "0000-0003-2781-2386" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mazur-J-E", "name": { "family": "Mazur", "given": "J. E." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Zurbuchen-T-H", "name": { "family": "Zurbuchen", "given": "T. H." } } ] }, "title": "Long-term fluences of energetic particles in the heliosphere", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar cosmic ray particles; solar activity; charge measurement; energy measurement; astronomical instruments; mass spectrometers; iron; element relative abundance", "note": "\u00a9 2001 American Institute of Physics.\n\nIssue Date: 21 November 2001.\n\nPublished - MEWaipcp01b.pdf
", "abstract": "We report energy spectra of He, O, and Fe nuclei, extending from ~0.3 keV/nucleon to ~300 MeV/nucleon, integrated over the period from the Fall of 1997 to mid-2000. These fluence measurements were made at 1 AU using data from the SWICS, ULEIS, SIS, and CRIS instruments on ACE, and include contributions from fast and slow solar wind, coronal mass ejections, pickup ions, impulsive and gradual solar particle events, acceleration in corotating interaction regions and other interplanetary shocks, and anomalous and galactic cosmic rays. Fluence measurements of six additional species are presented in the energy region from ~0.04 to ~100 MeV/nucleon. We discuss the relative contributions of the various particle components, and comment on the shape and time dependence of the measured energy spectra.", "date": "2001-11-21", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "165-170", "id_number": "CaltechAUTHORS:20111118-100325232", "isbn": "0-7354-0042-3", "book_title": "Solar and Galactic Composition: A Joint SOHO/ACE Workshop", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111118-100325232", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "2003-31", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Wimmer-Schweingruber-R-F", "name": { "family": "Wimmer-Schweingruber", "given": "Robert F." } } ] }, "doi": "10.1063/1.1433995", "primary_object": { "basename": "MEWaipcp01b.pdf", "url": "https://authors.library.caltech.edu/records/4nf5h-9a628/files/MEWaipcp01b.pdf" }, "pub_year": "2001", "author_list": "Mewaldt, R. A.; Mason, G. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/cfwe3-neq92", "eprint_id": 27852, "eprint_status": "archive", "datestamp": "2023-08-21 22:43:54", "lastmod": "2024-01-13 05:47:51", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Lijowski-M", "name": { "family": "Lijowski", "given": "M." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Measurements of the isotopes of lithium, beryllium, and boron from ACE/CRIS", "ispublished": "unpub", "full_text_status": "public", "keywords": "Galaxy; lithium, beryllium; boron; isotope relative abundance; element relative abundance; cosmic ray interactions; interstellar matter; astronomical techniques", "note": "\u00a9 2001 American Institute of Physics.\n\nIssue Date: 21 November 2001.\n\nThis work was supported by NASA at NASA/Goddard Space Flight Center, the Jet Propulsion Laboratory, Washington University and the California Institute of Technology (under grant NAG5-6912).\n\nPublished - NOLaipcp01b.pdf
", "abstract": "The isotopes of lithium, beryllium, and boron (LiBeB) are known in nature to be produced primarily by CNO spallation and \u03b1-\u03b1 fusion from interactions between cosmic rays and interstellar nuclei. While the dominant source of LiBeB isotopes in the present epoch is cosmic-ray interactions, other sources are known to exist, including the production of ^(7)Li from big bang nucleosynthesis. Precise observations of galactic cosmic-ray LiBeB in addition to accurate modeling of cosmic-ray transport can help to constrain the relative importance among the different production mechanisms. The Cosmic Ray Isotope Spectrometer (CRIS) on the Advanced Composition Explorer (ACE) has measured nuclei with 2 \u2272 Z \u2272 30 in the energy range ~30\u2013500 MeV/nucleon since 1997 with good statistical accuracy. We present measurements of the isotopic abundances of LiBeB and discuss these observations in the context of previous cosmic-ray measurements and spectroscopic observations.", "date": "2001-11-21", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "251-255", "id_number": "CaltechAUTHORS:20111118-100206530", "isbn": "0-7354-0042-3", "book_title": "Solar and Galactic Composition: A Joint SOHO/ACE Workshop", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111118-100206530", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" }, { "agency": "NASA Goddard Space Flight Center" }, { "agency": "JPL" }, { "agency": "Caltech", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "2001-63", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Wimmer-Schweingruber-R-F", "name": { "family": "Wimmer-Schweingruber", "given": "R. F." } } ] }, "doi": "10.1063/1.1434007", "primary_object": { "basename": "NOLaipcp01b.pdf", "url": "https://authors.library.caltech.edu/records/cfwe3-neq92/files/NOLaipcp01b.pdf" }, "pub_year": "2001", "author_list": "de Nolfo, G. A.; Yanasak, N. E.; et el." }, { "id": "https://authors.library.caltech.edu/records/f4v4k-a3y91", "eprint_id": 27836, "eprint_status": "archive", "datestamp": "2023-08-21 22:43:39", "lastmod": "2024-01-13 05:47:33", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Measurements of Heavy Elements and Isotopes in Small\n Solar Energetic Particle Events", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar cosmic ray particles; energy measurement; element relative abundance; isotope relative abundance; time series; neon; acceleration", "note": "\u00a9 2001 American Institute of Physics.\n\nIssue Date: 21 November 2001.\n\nThis research was supported by NASA at Caltech (under grant NAG5-6912), JPL, and GSFC. We thank the EPAM science team for providing the proton fluxes used to define the time periods of low solar activity in this paper.\n\nPublished - SLOaipcp01.pdf
", "abstract": "Using the Solar Isotope Spectrometer on the Advanced Composition Explorer, we have examined the ~10\u201320 MeV/nucleon elemental and isotopic composition of heavy (Z\u22656) energetic nuclei accelerated in 30 small solar energetic particle (SEP) events which occurred between 31 March 1998 and 2 January 2001. We have measured the average heavy element content, the ^(22)Ne/^(20)Ne ratio, and the ^(26)Mg/^(24)Mg ratio in these events, and find good agreement with past studies. We have categorized the events according to their 3He/4He ratios, and find significant enhancements in the neutron-rich heavy isotopes of Ne and Mg in the combined 3He-rich data set: ^(22)Ne/^(20)Ne = 0.17\u00b10.05 and ^(26)Mg/^(24)Mg = 0.25\u00b10.05. We discuss the implications of these measurements for the acceleration of energetic nuclei in SEP events.", "date": "2001-11-21", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "177-182", "id_number": "CaltechAUTHORS:20111117-123441068", "isbn": "0-7354-0042-3", "book_title": "Solar and Galtic Composition", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111117-123441068", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" }, { "agency": "JPL" }, { "agency": "Goddard Space Flight Center" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Wimmer-Schweingruber-R-F", "name": { "family": "Wimmer-Schweingruber", "given": "R. F." } } ] }, "doi": "10.1063/1.1433997", "primary_object": { "basename": "SLOaipcp01.pdf", "url": "https://authors.library.caltech.edu/records/f4v4k-a3y91/files/SLOaipcp01.pdf" }, "pub_year": "2001", "author_list": "Slocum, P. L.; Christian, E. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/1wjt9-ckz26", "eprint_id": 27871, "eprint_status": "archive", "datestamp": "2023-08-21 22:44:05", "lastmod": "2024-01-13 05:48:15", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } } ] }, "title": "Constraints on the nucleosynthesis of refractory nuclides in galactic cosmic rays", "ispublished": "unpub", "full_text_status": "public", "keywords": "galactic cosmic rays; cosmic ray composition; solar system; calcium; cobalt; nickel; isotope relative abundance; supernovae; nucleosynthesis", "note": "\u00a9 2001 American Institute of Physics.\n\nIssue Date: 21 November 2001.\n\nThis research was supported by the National Aeronautics\nand Space Administration at the California Institute\nof Technology (under grant NAG5-6912), the Jet Propulsion\nLaboratory, NASA's Goddard Space Flight Center, and Washington University.\n\nPublished - WIEaipcp01.pdf
", "abstract": "Abundances of the isotopes of the refractory elements Ca, Fe, Co, and Ni in the galactic cosmic-ray source are compared with corresponding abundances in solar-system matter. For the 12 nuclides considered, relative abundances agree to within a factor of 2, and typically within 20\u201330%. In addition, comparisons of cosmic-ray abundances with model calculations of supernova yields are used to argue that cosmic rays contain contributions from stars with a broad range of masses. Based on these and other results we suggest that cosmic rays probably represent a sample of contemporary interstellar matter, at least for refractory species.", "date": "2001-11-21", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "269-274", "id_number": "CaltechAUTHORS:20111118-151333593", "isbn": "0-7354-0042-3", "book_title": "Solar and Galactic Composition: A Joint SOHO/ACE Worshop", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111118-151333593", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" }, { "agency": "JPL" }, { "agency": "NASA Goddard Space Flight Center" }, { "agency": "Washington University" } ] }, "other_numbering_system": { "items": [ { "id": "2003-23", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Wimmer-Schweingruber-R-F", "name": { "family": "Wimmer-Schweingruber", "given": "R. F." } } ] }, "doi": "10.1063/1.1434010", "primary_object": { "basename": "WIEaipcp01.pdf", "url": "https://authors.library.caltech.edu/records/1wjt9-ckz26/files/WIEaipcp01.pdf" }, "pub_year": "2001", "author_list": "Wiedenbeck, M. E.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/1q5rd-v8e51", "eprint_id": 27742, "eprint_status": "archive", "datestamp": "2023-08-21 22:43:34", "lastmod": "2024-01-13 05:47:04", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Ogliore-R-C", "name": { "family": "Ogliore", "given": "R. C." } }, { "id": "Gloeckler-G", "name": { "family": "Gloeckler", "given": "G." } }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" } ] }, "title": "A New Look at Neon-C and SEP-Neon", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar wind; meteorites; lunar surface; interplanetary matter; ion implantation; isotope relative abundance; neon; solar cosmic ray particles", "note": "\u00a9 2001 American Institute of Physics.\n\nIssue Date: 21 November 2001.\n\nThis work was supported by NASA at Caltech (under grant NAS5-6912) and at the University of Maryland. We thank D. Burnett and M. Wiedenbeck for help with TRIM simulations and R. Wimmer-Schweingruber for discussions of SEP neon.\nWe greatly appreciate the assistance of R. Wieler in\ninterpreting noble gas measurements in lunar samples.\n\nPublished - MEWaipcp01.pdf
", "abstract": "Studies of the isotopic composition of neon in lunar soils, meteorites, and interplanetary dust particles have revealed several distinct components. In addition to implanted solar wind, which has a ^(20)Ne/^(22)Ne-abundance ratio of 13.7, there is an additional component with ^(20)Ne/^(22)Ne\u224811.2, originally attributed to higher-energy solar energetic particles. Using data from the Advanced Composition Explorer, we have measured the fluence of solar wind, suprathermal particles, solar energetic particles and cosmic rays from ~0.3 keV/nucleon to ~300 MeV/nucleon over an extended time period. We use these measured spectra to simulate the present-day depth distribution of Ne isotopes implanted in the lunar soil. We find that the suprathermal tail of the solar wind, extending from a few keV/nucleon to several MeV/nucleon with a power law spectrum, can produce ^(20)Ne/^(22)Ne abundance ratios in the lunar soil that are similar to the measured composition, although there remain significant questions about the extent to which the present-day intensity of suprathermal ions is sufficient to explain the lunar observations.", "date": "2001-11-21", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "393-398", "id_number": "CaltechAUTHORS:20111110-155919555", "isbn": "0-7354-0042-3", "book_title": "Solar and Galactic Composition", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111110-155919555", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA/Caltech", "grant_number": "NAS5-6912" }, { "agency": "University of Maryland" } ] }, "other_numbering_system": { "items": [ { "id": "2003-29", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Wimmer-Schweingruber-R-F", "name": { "family": "Wimmer-Schweingruber", "given": "R. F." } } ] }, "doi": "10.1063/1.1434028", "primary_object": { "basename": "MEWaipcp01.pdf", "url": "https://authors.library.caltech.edu/records/1q5rd-v8e51/files/MEWaipcp01.pdf" }, "pub_year": "2001", "author_list": "Mewaldt, R. A.; Ogliore, R. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/cpwsd-36m39", "eprint_id": 27838, "eprint_status": "archive", "datestamp": "2023-08-21 22:43:44", "lastmod": "2024-01-13 05:47:37", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "The Ionic Charge State Composition at High Energies in\n Large Solar Energetic Particle Events in Solar Cycle 23", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar cosmic ray particles; solar activity; charge measurement; energy measurement; astronomical instruments; mass spectrometers; iron; element relative abundance", "note": "\u00a9 2001 American Institute of Physics.\n\nIssue Date: 21 November 2001.\n\nThis research was supported by NASA under contract\nNAS5-30704 and grant NAGW-1919. GOES data (Figure\n2) were obtained from the National Oceanic and Atmospheric\nAdministration (NOAA), US Department of Commerce, through the Space Environment Center and the National Geophysical Data Center.\n\nPublished - LESaipcp01a.pdf
", "abstract": "The ionic charge states of solar energetic particles (SEPs) depend upon the temperature of the source material and on the environment encountered during acceleration and transport during which electron stripping may occur. Measurements of SEP charge states at relatively high energies (\u227315 MeV/nucleon) are possible with the Mass Spectrometer Telescope (MAST) on the Solar, Anomalous, and Magnetospheric Particle Explorer satellite by using the Earth's magnetic field as a particle rigidity filter. Using MAST data, we have determined ionic charge states of Fe and other elements in several of the largest SEP events of solar cycle 23. The charge states appear to be correlated with elemental abundances, with high charge states (~20 for Fe) for all elements in large Fe-rich events. We review the geomagnetic filter technique and summarize the results from MAST to date, with particular emphasis on new measurements in the very large 14 July 2000 SEP event. We compare the charge states determined by MAST with other measurements and with those expected from equilibrium calculations.", "date": "2001-11-21", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "171-176", "id_number": "CaltechAUTHORS:20111117-145314535", "isbn": "0-7354-0042-3", "book_title": "Solar and Galactic Composition", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111117-145314535", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-30704" }, { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "other_numbering_system": { "items": [ { "id": "2003-30", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Wimmer-Schweingruber-R-F", "name": { "family": "Wimmer-Schweingruber", "given": "R. F." } } ] }, "doi": "10.1063/1.1433996", "primary_object": { "basename": "LESaipcp01a.pdf", "url": "https://authors.library.caltech.edu/records/cpwsd-36m39/files/LESaipcp01a.pdf" }, "pub_year": "2001", "author_list": "Leske, R. A.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/phwfb-26479", "eprint_id": 27840, "eprint_status": "archive", "datestamp": "2023-08-21 22:43:49", "lastmod": "2024-01-13 05:47:39", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "von-Steiger-R", "name": { "family": "von Steiger", "given": "R." } }, { "id": "Vial-J-C", "name": { "family": "Vial", "given": "J. -C." } }, { "id": "Bochsler-P", "name": { "family": "Bochsler", "given": "P." } }, { "id": "Chaussidon-M", "name": { "family": "Chaussidon", "given": "M." } }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Fleck-B", "name": { "family": "Fleck", "given": "B." } }, { "id": "Heber-V-S", "name": { "family": "Heber", "given": "V. S." } }, { "id": "Holweger-H", "name": { "family": "Holweger", "given": "H." } }, { "id": "Issautier-K", "name": { "family": "Issautier", "given": "K." } }, { "id": "Lazarus-A-J", "name": { "family": "Lazarus", "given": "A. J." } }, { "id": "Ogilvie-K-W", "name": { "family": "Ogilvie", "given": "K. W." } }, { "id": "Paquette-J-A", "name": { "family": "Paquette", "given": "J. A." } }, { "id": "Reisenfeld-D-B", "name": { "family": "Reisenfeld", "given": "D. B." }, "orcid": "0000-0003-1874-9450" }, { "id": "Teriaca-L", "name": { "family": "Teriaca", "given": "L." } }, { "id": "Wilhelm-K", "name": { "family": "Wilhelm", "given": "K." } }, { "id": "Yusainee-S", "name": { "family": "Yusainee", "given": "S." } }, { "id": "Laming-J-M", "name": { "family": "Laming", "given": "J. M." }, "orcid": "0000-0002-3362-7040" }, { "id": "Wiens-R-C", "name": { "family": "Wiens", "given": "R. C." }, "orcid": "0000-0002-3409-7344" } ] }, "title": "Measuring Solar Abundances", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar composition; element relative abundance; reviews; remote sensing; astronomical techniques; solar wind; design of experiments", "note": "\u00a9 2001 American Institute of Physics.\n\nIssue Date: 21 November 2001.\n\nWe gratefully acknowledge the effort of the scientific and\nlocal organisation committees, in particular of Robert\nF. Wimmer-Schweingruber, in making this workshop happen. We also thank Sylvie Vauclair and Robert F.\nWimmer-Schweingruber for useful comments on the manuscript. JML was supported by NRL/ONR Solar Magnetism and the Earth's Environment 6.1 Research Option and by NASA Contracts W19473 and S137836.\n\nPublished - STEaipcp01.pdf
", "abstract": "This is the rapporteur paper of Working Group 2 on Measuring Solar Abundances. The working group presented and discussed the different observations and methods for obtaining the elemental and isotopic composition of the Sun, and critically reviewed their results and the accuracies thereof. Furthermore, a few important yet unanswered questions were identified, and the potential of future missions to provide answers was assessed.", "date": "2001-11-21", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "13-22", "id_number": "CaltechAUTHORS:20111117-145415835", "isbn": "0-7354-0042-3", "book_title": "Solar and Galactic Composition", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111117-145415835", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NRL/ONR Solar Magnetism and the Earth's Environment 6.1 Research Option" }, { "agency": "NASA", "grant_number": "W19473" }, { "agency": "NASA", "grant_number": "S137836" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Wimmer-Schweingruber-R-F", "name": { "family": "Wimmer-Schweingruber", "given": "R. F." } } ] }, "doi": "10.1063/1.1433973", "primary_object": { "basename": "STEaipcp01.pdf", "url": "https://authors.library.caltech.edu/records/phwfb-26479/files/STEaipcp01.pdf" }, "pub_year": "2001", "author_list": "von Steiger, R.; Vial, J. -C.; et el." }, { "id": "https://authors.library.caltech.edu/records/yncgm-6b173", "eprint_id": 27808, "eprint_status": "archive", "datestamp": "2023-08-21 22:37:37", "lastmod": "2024-01-13 05:47:15", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Grindlay-J", "name": { "family": "Grindlay", "given": "J." } }, { "id": "Bildsten-L", "name": { "family": "Bildsten", "given": "L." } }, { "id": "Blandford-R-D", "name": { "family": "Blandford", "given": "R." }, "orcid": "0000-0002-1854-5506" }, { "id": "Chakrabarty-D", "name": { "family": "Chakrabarty", "given": "D." }, "orcid": "0000-0001-8804-8946" }, { "id": "Elvis-M", "name": { "family": "Elvis", "given": "M." } }, { "id": "Fabian-A", "name": { "family": "Fabian", "given": "A." } }, { "id": "Fiore-F", "name": { "family": "Fiore", "given": "F." } }, { "id": "Fishman-G", "name": { "family": "Fishman", "given": "G." } }, { "id": "Gehrels-N", "name": { "family": "Gehrels", "given": "N." } }, { "id": "Hailey-C", "name": { "family": "Hailey", "given": "C." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "F." }, "orcid": "0000-0003-2992-8024" }, { "id": "Hartmann-D", "name": { "family": "Hartmann", "given": "D." } }, { "id": "Kouveliotou-C", "name": { "family": "Kouveliotou", "given": "C." }, "orcid": "0000-0003-1443-593X" }, { "id": "Prince-T-A", "name": { "family": "Prince", "given": "T." }, "orcid": "0000-0002-8850-3627" }, { "id": "Ramsey-B", "name": { "family": "Ramsey", "given": "B." } }, { "id": "Rothschild-R", "name": { "family": "Rothschild", "given": "R." } }, { "id": "Skinner-G", "name": { "family": "Skinner", "given": "G." } }, { "id": "Woosley-S", "name": { "family": "Woosley", "given": "S." } } ] }, "title": "EXIST: The Ultimate Spatial/Temporal Hard X-ray Survey", "ispublished": "unpub", "full_text_status": "public", "keywords": "X-ray astronomy; X-ray detection; astronomical telescopes; astronomical atlases; astronomical catalogues; galactic nuclei; accretion; cosmic background radiation; BL Lac-type objects; image sensors; star formation; black holes; X-ray sources (astronomical); quasars; surveying", "note": "\u00a9 2001 American Institute of Physics. \n\nIssue Date: 7 October 2001.\n\nPublished - GRIaipcp01.pdf
", "abstract": "The Energetic X-ray Imaging Survey Telescope (EXIST) is a proposed mission to conduct an all-sky imaging hard x-ray (HX) survey (~5\u2013600 keV) with ~0.05mCrab sensitivity (5\u03c3; 6mo.; ~5\u2013100keV) comparable to the ROSAT soft x-ray survey, and to provide the maximum sensitivity and resolution (spatial and temporal) HX imager as the Next Generation GRB mission. Its primary science goals are to i) identify and measure obscured AGN and constrain the accretion luminosity of the universe as well as the cosmic IR background from Blazar spectra coincident with GeV-TeV observations, ii) measure spectra, variability and locations for the faintest GRBs to study the most energetic events in the universe and the earliest epoch of star formation, and iii) study black holes on all scales, from x-ray transients to luminous AGN. EXIST would incorporate a very large area (~8m^2) imaging Cd-Zn-Te detector and coded aperture telescope array with nearly half-sky instantaneous view which images the full sky each orbit. With fixed zenith pointing, it could be mounted on the ISS or a free flyer and would complement both GLAST and Constellation-X science if launched before 2010, as recommended by the Astronomy and Astrophysics Decadal Survey.", "date": "2001-10-07", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "899-908", "id_number": "CaltechAUTHORS:20111116-111318332", "isbn": "0-7354-0027-X", "book_title": "GAMMA 2001: Gamma-Ray Astrophysics 2001", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111116-111318332", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Ritz-S", "name": { "family": "Ritz", "given": "Steven" } }, { "id": "Gehrels-N", "name": { "family": "Gehrels", "given": "Neil" } }, { "id": "Shrader-C", "name": { "family": "Shrader", "given": "Chris" } } ] }, "doi": "10.1063/1.1419518", "primary_object": { "basename": "GRIaipcp01.pdf", "url": "https://authors.library.caltech.edu/records/yncgm-6b173/files/GRIaipcp01.pdf" }, "pub_year": "2001", "author_list": "Grindlay, J.; Bildsten, L.; et el." }, { "id": "https://authors.library.caltech.edu/records/zmeqm-vc379", "eprint_id": 55432, "eprint_status": "archive", "datestamp": "2023-09-15 04:57:00", "lastmod": "2023-10-23 21:12:01", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Geier-Stephan", "name": { "family": "Geier", "given": "S." }, "orcid": "0000-0002-3948-9339" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Wiedenbeck-Mark-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Progress in the development of large-area, ultra-thin silicon detectors for space-based applications", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Copernicus GmbH \u2022 Provided by the NASA Astrophysics Data System \n\nThe authors arc indebred LO many individuals, in particular C. D. Wilburn and A. J. Buck of Micron Semiconductor ldt. and F. B. Eyre of JPL. \n\nThis work was supported by NASA technology grant NAGS-3466.\n\nPublished - 2001-25.pdf
", "abstract": "Silicon solid-state detectors have been used in the past to\nmeasure the energy deposit dE/dx and total energy E of solar\nand galactic energetic particles in order to derive their\nmass and charge and hence to study composition of particle\npopulations in space. The lower energy limit of the measurement is set by the total energy required to penetrate the dE/dx detector. In order to sample the range of kinetic energies per nucleon down to about lMeV, of interest for solar particle studjes, the dE/dx detector thickness cannot exceed 10-20 pm. Very thin silicon membranes, however, are quite fragile and have thus been limited in their practical sizes to less than a few cm2, which reduces their applicability in the study of less abundant species.\nThis paper presents some of the progress in the current\nJPUCaltech effo11s to produce large area monolithic silicon\ndevices with thicknesses in the range ,.._, I 0 to 20\u03bcm.", "date": "2001-08", "date_type": "published", "publisher": "Copernicus GmbH", "place_of_pub": "Hamburg, Germany", "pagerange": "2301-2304", "id_number": "CaltechAUTHORS:20150302-154522793", "isbn": "9783980486279", "book_title": "Proceedings of the 27th International Cosmic Ray Conference.", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150302-154522793", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGS-3466" } ] }, "other_numbering_system": { "items": [ { "id": "2001-25", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "2001-25.pdf", "url": "https://authors.library.caltech.edu/records/zmeqm-vc379/files/2001-25.pdf" }, "pub_year": "2001", "author_list": "Geier, S.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/576sr-fwb54", "eprint_id": 103834, "eprint_status": "archive", "datestamp": "2023-08-21 22:25:33", "lastmod": "2024-01-15 04:31:52", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Deelman-E", "name": { "family": "Deelman", "given": "Ewa" } }, { "id": "Kesselman-C", "name": { "family": "Kesselman", "given": "Carl" } }, { "id": "Williams-R-D", "name": { "family": "Williams", "given": "Roy" }, "orcid": "0000-0002-9145-8580" }, { "id": "Lazzarini-A", "name": { "family": "Lazzarini", "given": "Albert" } }, { "id": "Prince-T-A", "name": { "family": "Prince", "given": "Thomas A." }, "orcid": "0000-0002-8850-3627" }, { "id": "Romano-J", "name": { "family": "Romano", "given": "Joe" } }, { "id": "Allen-B", "name": { "family": "Allen", "given": "Bruce" } } ] }, "title": "A Virtual Data Grid for LIGO", "ispublished": "unpub", "full_text_status": "restricted", "keywords": "Large Hadron Collider; Gravitational Wave; Virtual Channel; Virtual Data; Request Manager", "note": "\u00a9 2001 Springer-Verlag Berlin Heidelberg. \n\nFirst Online: 12 July 2001.", "abstract": "GriPhyN (Grid Physics Network) is a large US collaboration to build grid services for large physics experiments, one of which is LIGO, a gravitational-wave observatory. This paper explains the physics and computing challenges of LIGO, and the tools that GriPhyN will build to address them. A key component needed to implement the data pipeline is a virtual data service; a system to dynamically create data products requested during the various stages. The data could possibly be already processed in a certain way, it may be in a file on a storage system, it may be cached, or it may need to be created through computation. The full elaboration of this system will allow complex data pipelines to be set up as virtual data objects, with existing data being transformed in diverse ways.", "date": "2001-07-12", "date_type": "published", "publisher": "Springer", "place_of_pub": "Berlin", "pagerange": "3-12", "id_number": "CaltechAUTHORS:20200611-070141219", "isbn": "978-3-540-42293-8", "book_title": "High-Performance Computing and Networking", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20200611-070141219", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Center-for-Advanced-Computing-Research" }, { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Hertzberger-B", "name": { "family": "Hertzberger", "given": "Bob" } }, { "id": "Hoekstra-A", "name": { "family": "Hoekstra", "given": "Alfons" } }, { "id": "Williams-R-D", "name": { "family": "Williams", "given": "Roy D." } } ] }, "doi": "10.1007/3-540-48228-8_1", "pub_year": "2001", "author_list": "Deelman, Ewa; Kesselman, Carl; et el." }, { "id": "https://authors.library.caltech.edu/records/af0wg-mxe27", "eprint_id": 9383, "eprint_status": "archive", "datestamp": "2023-08-21 22:06:05", "lastmod": "2024-01-12 23:29:33", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Kulkarni-S-R", "name": { "family": "Kulkarni", "given": "S. R." }, "orcid": "0000-0001-5390-8563" }, { "id": "Berger-Edo", "name": { "family": "Berger", "given": "E." }, "orcid": "0000-0002-9392-9681" }, { "id": "Bloom-J-S", "name": { "family": "Bloom", "given": "J. S." }, "orcid": "0000-0002-7777-216X" }, { "id": "Chaffee-F", "name": { "family": "Chaffee", "given": "F." } }, { "id": "Diercks-A", "name": { "family": "Diercks", "given": "A." } }, { "id": "Djorgovski-S-G", "name": { "family": "Djorgovski", "given": "S. G." }, "orcid": "0000-0002-0603-3087" }, { "id": "Frail-D-A", "name": { "family": "Frail", "given": "D. A." } }, { "id": "Galama-T-J", "name": { "family": "Galama", "given": "T. J." } }, { "id": "Goodrich-R-W", "name": { "family": "Goodrich", "given": "R. W." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "F. A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Sari-R", "name": { "family": "Sari", "given": "R." }, "orcid": "0000-0002-1084-3656" }, { "id": "Yost-S-A", "name": { "family": "Yost", "given": "S. A." } } ] }, "title": "The afterglows of gamma-ray bursts", "ispublished": "unpub", "full_text_status": "public", "keywords": "gamma-ray astronomy, gamma-ray sources (astronomical), transients, afterglows, astrophysical radiation mechanisms, stellar radiation, star formation, supernovae, galaxies, red shift, cosmology", "note": "\u00a9 2001 American Institute of Physics. \n\nIssue Date: March 23, 2001. \n\nOur research is supported by NASA and NSF. JSB holds a Fannie & John Hertz Foundation Fellowship, AD holds a Millikan Postdoctoral Fellowship in Experimental Physics, TJG holds a Fairchild Foundation Postdoctoral Fellowship in Observational Astronomy and RS holds Fairchild Foundation Senior Fellowship in Theoretical Astrophysics. The VLA is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. The W.M. Keck Observatory is operated by the California Association for Research in Astronomy, a scientific partnership among California Institute of Technology, the University of California and the National Aeronautics and Space Administration. It was made possible by the generous financial support of the W.M. Keck Foundation.\n\nPublished - KULaipcp01a.pdf
", "abstract": "Gamma-ray burst astronomy has undergone a revolution in the last three years, spurred by the discovery of fading long-wavelength counterparts. We now know that at least the long duration GRBs lie at cosmological distances with estimated electromagnetic energy release of 10^51\u201310^53 erg, making these the brightest explosions in the Universe. In this article we review the current observational state, beginning with the statistics of X-ray, optical, and radio afterglow detections. We then discuss the insights these observations have given to the progenitor population, the energetics of the GRB events, and the physics of the afterglow emission. We focus particular attention on the evidence linking GRBs to the explosion of massive stars. Throughout, we identify remaining puzzles and uncertainties, and emphasize promising observational tools for addressing them. The imminent launch of HETE-2 and the increasingly sophisticated and coordinated ground-based and space-based observations have primed this field for fantastic growth. This overview is a combined write-up of talks given at this conference and in NASA's Goddard Space Flight Center.", "date": "2001-03-23", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "240-260", "id_number": "CaltechAUTHORS:KULaipcp01a", "isbn": "1563969874", "book_title": "Explosive Phenomena in Astrophysical Objects: First KIAS Astrophysics Workshop, Seoul, Korea, 24-27 May 2000", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:KULaipcp01a", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" }, { "agency": "NSF" }, { "agency": "Fannie and John Hertz Foundation" }, { "agency": "Robert A. Millikan Fellowship" }, { "agency": "Sherman Fairchild Foundation" }, { "agency": "W. M. Keck Foundation" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" }, { "id": "Division-of-Geological-and-Planetary-Sciences" } ] }, "contributors": { "items": [ { "name": { "family": "Chang", "given": "Heon-Young" } }, { "name": { "family": "Yi", "given": "Insu" } }, { "name": { "family": "Rho", "given": "Mannque" } }, { "name": { "family": "Lee", "given": "Chang-Hwan" } } ] }, "doi": "10.1063/1.1368281", "primary_object": { "basename": "KULaipcp01a.pdf", "url": "https://authors.library.caltech.edu/records/af0wg-mxe27/files/KULaipcp01a.pdf" }, "pub_year": "2001", "author_list": "Kulkarni, S. R.; Berger, E.; et el." }, { "id": "https://authors.library.caltech.edu/records/jz2fp-rsv41", "eprint_id": 28565, "eprint_status": "archive", "datestamp": "2023-08-19 07:21:10", "lastmod": "2024-01-13 05:50:16", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } }, { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Lijowski-M", "name": { "family": "Lijowski", "given": "M." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "The cosmic-ray contribution to galactic abundances of the light elements: Interpretation of GCR LiBeB abundance measurements from ACE/CRIS", "ispublished": "unpub", "full_text_status": "public", "keywords": "Galaxy, element relative abundance, cosmic ray interactions, interstellar matter, cosmic ray composition, nuclear reactions and scattering, modelling, astronomical techniques", "note": "\u00a9 2001 American Institute of Physics. This research was supported by NASA at the California Institute of Technology, (grant NAG5-6912), the Jet Propulsion Laboratory, the NASA Goddard Space Flight Center, and Washington University.\n\nPublished - YANaipcp01.pdf
", "abstract": "Inelastic collisions between the galactic cosmic rays (GCRs) and the interstellar medium (ISM) are responsible for producing essentially all of the light elements Li, Be, and B (LiBeB) observed in the cosmic rays. Previous calculations (e.g., [1]) have shown that GCR fragmentation can explain the bulk of the existing LiBeB abundance in the present day Galaxy. However, elemental abundances of LiBeB in old halo stars indicate inconsistencies with this explanation. We have used a simple leaky-box model to predict the cosmic-ray elemental and isotopic abundances of LiBeB in the present epoch. We conducted a survey of recent scientific literature on fragmentation cross sections and have calculated the amount of uncertainty they introduce into our model. The predicted particle intensities of this model were compared with high energy (E_(ISM) = 200\u2013500\u200aMeV/nucleon) cosmic-ray data from the Cosmic Ray Isotope Spectrometer (CRIS), which indicates fairly good agreement with absolute fluxes for Z \u2265 5 and relative isotopic abundances for all LiBeB species.", "date": "2001-03", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "245-250", "id_number": "CaltechAUTHORS:20111222-093454569", "isbn": "0-7354-0042-3", "book_title": "Solar and Galactic Composition", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111222-093454569", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" }, { "agency": "JPL" }, { "agency": "NASA Goddard Space Flight Center" }, { "agency": "Washington University" } ] }, "other_numbering_system": { "items": [ { "id": "2001-61", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Wimmer-Schweingruber-R-F", "name": { "family": "Wimmer-Schweingruber", "given": "Robert F." } } ] }, "doi": "10.1063/1.1434006", "primary_object": { "basename": "YANaipcp01.pdf", "url": "https://authors.library.caltech.edu/records/jz2fp-rsv41/files/YANaipcp01.pdf" }, "pub_year": "2001", "author_list": "Yanasak, N. E.; de Nolfo, G. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/mx45x-aw996", "eprint_id": 48905, "eprint_status": "archive", "datestamp": "2023-08-19 07:21:49", "lastmod": "2024-01-13 16:08:09", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Isotopic abundances in the solar corona as inferred from ACE measurements of solar energetic particles", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2001 American Institute of Physics. Published online 21 November 2001. This research was supported by NASA at the California Institute of Technology (under grant NAG5-6912), the Jet Propulsion Laboratory, and the Goddard Space Flight\nCenter.\n\nPublished - 1.1433990.pdf
", "abstract": "The isotopic composition of solar energetic particles (SEPs) has been measured using the Solar Isotope Spectrometer on the Advanced Composition Explorer. The measurements include up to 12 isotope abundance ratios for ten elements from C through Ni at energies of tens of MeV/nucleon in 18 large SEP events that have occurred since November 1997. These measurements clearly establish that SEP isotopic composition can vary widely (by factors of >3) from event to event, presumably due to mass fractionation processes during particle acceleration and/or transport. Elemental and isotopic abundance ratios are strongly correlated, suggesting that elemental and isotopic fractionation relative to the coronal source are largely governed by the same processes. Using empirical correlations to correct for the fractionation and obtain the coronal isotopic composition yields preliminary abundance values in good agreement with those found in the solar wind, with comparable accuracy.", "date": "2001-03", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "127-132", "id_number": "CaltechAUTHORS:20140826-103636832", "isbn": "0-7354-0042-3", "book_title": "Solar and Galactic Composition", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140826-103636832", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" }, { "agency": "JPL" }, { "agency": "Goddard Space Flight Center" } ] }, "other_numbering_system": { "items": [ { "id": "2003-25", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Wimmer-Schweingruber-R-F", "name": { "family": "Wimmer-Schweingruber", "given": "R. F." } } ] }, "doi": "10.1063/1.1433990", "primary_object": { "basename": "1.1433990.pdf", "url": "https://authors.library.caltech.edu/records/mx45x-aw996/files/1.1433990.pdf" }, "pub_year": "2001", "author_list": "Leske, R. A.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/p22tg-cey81", "eprint_id": 55455, "eprint_status": "archive", "datestamp": "2023-08-19 07:21:54", "lastmod": "2024-01-13 16:16:38", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Busemann-H", "name": { "family": "Busemann", "given": "H." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Chiappini-C", "name": { "family": "Chiappini", "given": "C." } }, { "id": "Gloeckler-G", "name": { "family": "Gloeckler", "given": "G." } }, { "id": "Hoppe-P", "name": { "family": "Hoppe", "given": "P." } }, { "id": "Kirilova-D", "name": { "family": "Kirilova", "given": "D." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Manuel-O-K", "name": { "family": "Manuel", "given": "O. K." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "M\u00f6bius-E", "name": { "family": "M\u00f6bius", "given": "E." } }, { "id": "Wieler-R", "name": { "family": "Wieler", "given": "R." }, "orcid": "0000-0001-5666-7494" }, { "id": "Wiens-R-C", "name": { "family": "Wiens", "given": "R. C." }, "orcid": "0000-0002-3409-7344" }, { "id": "Wimmer-Schweingruber-R-F", "name": { "family": "Wimmer-Schweingruber", "given": "R. F." } }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } } ] }, "title": "Applications of Abundance Data and Requirements for Cosmochemical Modeling", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2001 American Institute of Physics.\n\nWe thank the organizing committee of the SOHO/ACE Workshop held at the University of Bern, Switzerland, for bringing us together. This resulted in fruitful cross-disciplinary discussions, which we hope to be at least partly reflected in this contribution.\n\nPublished - 1.1434025.pdf
", "abstract": "Understanding the evolution of the universe from Big Bang to its present state requires an understanding of the evolution of the abundances of the elements and isotopes in galaxies, stars, the interstellar medium, the Sun and the\nheliosphere, planets and meteorites. Processes that change the state of the universe include Big Bang nucleosynthesis,\nstar formation and stellar nucleosynthesis, galactic chemical evolution, propagation of cosmic rays, spallation, ionization and particle transport of interstellar material, formation of the solar system, solar wind emission and its fractionation (FIP/FIT effect), mixing processes in stellar interiors, condensation of material and subsequent geochemical fractionation. Here, we attempt to compile some major issues in cosmochemistry that can be addressed with a better knowledge of the respective element or isotope abundances. Present and future missions such as Genesis, Stardust, Interstellar Pathfinder, and Interstellar Probe, improvements of remote sensing instrumentation and experiments on extraterrestrial material such as meteorites, presolar grains, and lunar or returned planetary or cometary samples will result in an improved database of elemental and isotopic abundances. This includes the primordial abundances of D, ^3He, ^4He, and ^7Li, abundances of the heavier elements in stars and galaxies, the composition of the interstellar medium, solar wind and comets as well as the (highly) volatile elements in the solar system such as helium, nitrogen, oxygen or xenon.", "date": "2001-03", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "357-379", "id_number": "CaltechAUTHORS:20150303-092054601", "isbn": "0-7354-0042-3", "book_title": "Solar and galactic composition: a joint SOHO/ACE workshop", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150303-092054601", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "2001-38", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Wimmer-Schweingruber-R-F", "name": { "family": "Wimmer-Schweingruber", "given": "Robert F." } } ] }, "doi": "10.1063/1.1434025", "primary_object": { "basename": "1.1434025.pdf", "url": "https://authors.library.caltech.edu/records/p22tg-cey81/files/1.1434025.pdf" }, "pub_year": "2001", "author_list": "Busemann, H.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/6pgv0-29k72", "eprint_id": 55461, "eprint_status": "archive", "datestamp": "2023-08-19 07:01:03", "lastmod": "2023-10-20 22:16:18", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Average Elemental and Isotopic Composition of Small Solar Energetic Particle Events", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Copernicus Gesellschaft 2001.\n\nThis research was supported by NASA at Caltech (under grant NAG5-6912), JPL, and GSFC. We thank the EPAM science team for providing the proton fluxes used to define the time periods of low solar activity in this paper.\n\nPublished - 2001-45.pdf
", "abstract": "Using the Solar Isotope Spectrometer on the Advanced Composition Explorer, we have measured the heavy (Z\u22656) element abundances of 33 small solar energetic particle (SEP) events which occurred between 4 April, 1998 and 3 December, 2000. The events have been classified according to their elemental and isotopic composition as well as other defining characteristics. With the event-averaged heavy element fluxes, we have investigated the dependence of elemental abundances relative to those of the solar photosphere on first ionization potential (FIP). Where possible, we have examined the FIP fractionation effects on the average composition of the small SEP events, and discuss the ensuing implications for the origin and acceleration of nuclei in these events.", "date": "2001", "date_type": "published", "publisher": "Copernicus Systems and Technology GmbH", "id_number": "CaltechAUTHORS:20150303-105420424", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150303-105420424", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "2001-45", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Simon-Manfred", "name": { "family": "Simon", "given": "M." } }, { "id": "Lorenz-E", "name": { "family": "Lorenz", "given": "E." } }, { "id": "Pohl-M", "name": { "family": "Pohl", "given": "M." } } ] }, "primary_object": { "basename": "2001-45.pdf", "url": "https://authors.library.caltech.edu/records/6pgv0-29k72/files/2001-45.pdf" }, "pub_year": "2001", "author_list": "Slocum, P. L.; Christian, E. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/vssqq-ryt18", "eprint_id": 55426, "eprint_status": "archive", "datestamp": "2023-08-19 07:00:43", "lastmod": "2023-10-20 22:14:11", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Adams-J-H-Jr", "name": { "family": "Adams", "given": "J. H., Jr." } }, { "id": "Barbieri-M", "name": { "family": "Barbieri", "given": "M." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Craig-N", "name": { "family": "Craig", "given": "N." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "Doke-T", "name": { "family": "Doke", "given": "T." } }, { "id": "Hasebe-N", "name": { "family": "Hasebe", "given": "N." } }, { "id": "Hayashe-T", "name": { "family": "Hayashe", "given": "T." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Lee-D", "name": { "family": "Lee", "given": "D." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mark-D", "name": { "family": "Mark", "given": "D." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Ogura-K", "name": { "family": "Ogura", "given": "K." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Tarle-G", "name": { "family": "Tarle", "given": "G." } }, { "id": "Tawara-H", "name": { "family": "Tawara", "given": "H." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Westphal-A-J", "name": { "family": "Westphal", "given": "A. J." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Yasuda-N", "name": { "family": "Yasuda", "given": "N." } } ] }, "title": "The Heavy Nuclei eXplorer (HNX) Mission", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Copernicus GmbH.\n\nThis research was supported in part by the National Aeronautics and Space Administration under grant NAGS- 10802 and by the McDonnell Center for the Space Sciences at\nWashington University.\n\nPublished - 2001-24.pdf
", "abstract": "The primary scientific objectives of HNX, which was recently selected by NASA for a Small Explorer (SMEX) Mission Concept Study, are to measure the age of the galactic cosmic rays (GCR) since nucleosynthesis, determine the injection mechanism for the GCR accelerator (Volatility or FIP), and study the mix of nucleosynthetic processes that contribute to the source of GCRs. The experimental goal of HNX is to measure the elemental abundances of all individual stable nuclei from neon through the actinides and possibly beyond. HNX is composed of two instruments: ECCO, which measures elemental abundances of nuclei with Z\u226572, and ENTICE, which measures elemental abundances of nuclei with 10\u2264Z\u226482. We describe the mission and the science that can be addressed by HNX. 1. Introduction The Heavy Nuclei eXplorer (HNX) mission that is currently being studied as a possible Small Explorer Mission (SMEX) has the primary objective of determining the origin of the galactic cosmic rays. The abundance patterns of the elements and isotopes in the GCRs provide the key because they are the fingerprints of GCR origin. HNX will, for the first time, measure with high precision the abundance of every individual element in the periodic table from neon through the actinides (thorium, uranium, plutonium, curium, and perhaps beyond). The HNX spacecraft will carry two high-precision instruments, the Extremely-heavy Cosmic-ray Composition Observer (ECCO) and the ENergetic Trans-Iron Composition Experiment (ENTICE), which cover overlapping ranges of the periodic table (Figure 1).", "date": "2001", "date_type": "published", "publisher": "Copernicus Systems and Technology GmbH", "id_number": "CaltechAUTHORS:20150302-135738779", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150302-135738779", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-10802" } ] }, "other_numbering_system": { "items": [ { "id": "2001-23", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Simon-M", "name": { "family": "Simon", "given": "M." } }, { "id": "Lorenz-E", "name": { "family": "Lorenz", "given": "E." } }, { "id": "Pohl-M", "name": { "family": "Pohl", "given": "M." } } ] }, "primary_object": { "basename": "2001-24.pdf", "url": "https://authors.library.caltech.edu/records/vssqq-ryt18/files/2001-24.pdf" }, "pub_year": "2001", "author_list": "Binns, W. R.; Adams, J. H., Jr.; et el." }, { "id": "https://authors.library.caltech.edu/records/xas0h-gx025", "eprint_id": 55285, "eprint_status": "archive", "datestamp": "2023-08-19 06:59:26", "lastmod": "2024-01-13 16:16:27", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Barghouty-A-F", "name": { "family": "Barghouty", "given": "A. F." } }, { "id": "Jokipii-J-R", "name": { "family": "Jokipii", "given": "J. R." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "Ionizing Media and the Observed Charge States of Anomalous Cosmic Rays", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2001 COSPAR. \n\nWork is supported by NSF grant 9810653 and NASA-JOVE NAG8-1208 (A.F.B.) and by NASA NAS5-30704 and NAG5-6912 at Caltech. A.F.B. thanks Ed Stone, Alan Cummings, Rick Leske, Conrad Steenberg (Caltech), and Mark Weidenbeck (JPL) for stimulating discussions and insightful comments.", "abstract": "Singly-charged anomalous cosmic rays (ACRs) can give rise to multiply-charged ACR ions when they suffer further ionization during acceleration at or near the solar-wind termination shock. Measurements at 1 AU by SAMPEX have shown that above~ 25 MeV /nucleon ACR nitrogen, oxygen, and neon ions are multiply charged. These observations have also established that the transition from mostly singly-charged to mostly multiply-charged ACRs occurs at a total kinetic energy of~ 350 MeV. Recent simulations for ACR oxygen using ambient hydrogen as the only ionizing medium at or near the termination shock are able to successfully\nmodel this transition. The simulated oxygen intensity, however, appears deficient at high energies, where\nmultiply-charged ACRs dominate. This paper presents further simulations that now include neutral helium as part of the ionizing medium in addition to the ambient, neutral hydrogen. The inclusion of helium helps reduce the deficiency, but appears to fall short of accounting fully for the observed spectrum. To that end, including heavier neutrals, e.g., oxygen, as well as taking multi-electron stripping into account, are suggested for more realistic modeling of the observed charge states of ACRs.", "date": "2001", "date_type": "published", "publisher": "Elsevier", "place_of_pub": "Amsterdam, The Netherlands", "pagerange": "203-206", "id_number": "CaltechAUTHORS:20150226-154434120", "isbn": "0444509097", "book_title": "The Outer Heliosphere: The Next Frontiers", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150226-154434120", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" } ] }, "other_numbering_system": { "items": [ { "id": "2000-10", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Scherer-Klaus", "name": { "family": "Scherer", "given": "Klaus" } }, { "id": "Fichtner-Horst", "name": { "family": "Fichtner", "given": "Horst" } }, { "id": "Fahr-Hans-J\u00f6rg", "name": { "family": "Fahr", "given": "Hans J\u00f6rg" } }, { "id": "Mrasch-Eckart", "name": { "family": "Marsch", "given": "Eckart" } } ] }, "doi": "10.1016/S0964-2749(01)80040-8", "pub_year": "2001", "author_list": "Barghouty, A. F.; Jokipii, J. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/dhrxa-zn407", "eprint_id": 55471, "eprint_status": "archive", "datestamp": "2023-08-19 07:01:22", "lastmod": "2023-10-20 22:16:48", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Sollitt-L-S", "name": { "family": "Sollitt", "given": "L. S." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Effects of Increasing Solar Modulation on Anomalous Cosmic Ray Intensities", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Copernicus GmbH.\n\nThis work was supported at Caltech, the Jet Propulsion Laboratory, and the Goddard Space Flight Center by\nNASA under grant NAG5-6012.\n\nPublished - 2001-50.pdf
", "abstract": "Anomalous Cosmic Rays (ACRs) are accelerated far out in the heliosphere at the termination shock. As they diffuse back through the solar system to 1 AU, they are modulated in intensity. The intensity of ACRs at 1 AU observed by the Solar Isotope Spectrometer has been decreasing since September 1997 as solar activity has been increasing. Oxygen at 7.1-10 MeV/nuc has decreased by a factor of at least 80. Nitrogen and neon at similar energies have also had similar large decreases. We examine the changing fluxes of various ACR species, and the changing elemental and isotopic composition of ACRs. ACR oxygen, in particular, may no longer be observable in 2001 at 1 AU above the background of solar, interplanetary, and galactic cosmic ray particles. The 22 Ne/20 Ne ratio at 15 MeV/nuc has also been increasing since September 1997 from a value of about 0.1 to a value more consistent with the GCR ratio of 0.5. This suggests that GCRs now dominate the quiet time flux of Ne at energies of 10 to 30 MeV/nucleon.", "date": "2001", "date_type": "published", "publisher": "Copernicus Systems and Technology GmbH", "id_number": "CaltechAUTHORS:20150303-113218886", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150303-113218886", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6910" } ] }, "other_numbering_system": { "items": [ { "id": "2001-50", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Simon-Manfred", "name": { "family": "Simon", "given": "M." } }, { "id": "Lorenz-E", "name": { "family": "Lorenz", "given": "E." } }, { "id": "Pohl-M", "name": { "family": "Pohl", "given": "M." } } ] }, "primary_object": { "basename": "2001-50.pdf", "url": "https://authors.library.caltech.edu/records/dhrxa-zn407/files/2001-50.pdf" }, "pub_year": "2001", "author_list": "Sollitt, L. S.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/7vz0r-70n75", "eprint_id": 55412, "eprint_status": "archive", "datestamp": "2023-08-19 07:00:13", "lastmod": "2023-10-20 22:13:02", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Ogliore-R-C", "name": { "family": "Ogliore", "given": "R. C." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "A Direct Measurement of the Geomagnetic Cutoff for Cosmic Rays at Space Station Latitudes", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Copernicus GmbH.\n\nThis research was supported by NASA under grant NAS5-30704. During the summer of 1999, when most of this work was conducted, Ryan Ogliore was a student at Clarcmont-McKcnna College, working at Caltech as the recipient of a Caltech Summer Undergraduate Research Fellowship (SURF). We thank Georgia de Nolfo for helpful discussions and Jay Cummings for contributions to the data analysis routines.\n\nPublished - 2001-18.pdf
", "abstract": "We report new measurements of the vertical geomagnetic cutoff for cosmic rays with rigidities from ~500 to 1700 MV, made using data from the MAST instrument on SAMPEX. A total of ~10,000 nuclei were used to measure the latitude cutoff in nineteen separate rigidity intervals. These results show that cosmic rays and solar particles can penetrate several degrees lower in latitude than would be estimated from commonly used relations for the geomagnetic cutoff, which has implications for the radiation exposure expected on the Space Station. An excellent fit to our measured cutoffs is given by the relation Rc = 15.062cos4 (\u039b) - 0.363 GV, where Rc is the geomagnetic cutoff in rigidity, and \u03bb is the invariant latitude. We suggest that this relation is useful over invariant latitudes from \u039b = 0\u00b0 to 64\u00b0, corresponding to rigidity cutoffs from ~0.2 to 15 GV.", "date": "2001", "date_type": "published", "publisher": "Copernicus Systems and Technology GmbH", "id_number": "CaltechAUTHORS:20150302-113209743", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150302-113209743", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-30704" } ] }, "other_numbering_system": { "items": [ { "id": "2001-18", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Simon-Manfred", "name": { "family": "Simon", "given": "M." } }, { "id": "Lorenz-E", "name": { "family": "Lorenz", "given": "E." } }, { "id": "Pohl-M", "name": { "family": "Pohl", "given": "M." } } ] }, "primary_object": { "basename": "2001-18.pdf", "url": "https://authors.library.caltech.edu/records/7vz0r-70n75/files/2001-18.pdf" }, "pub_year": "2001", "author_list": "Ogliore, R. C.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/tb6er-82z45", "eprint_id": 55485, "eprint_status": "archive", "datestamp": "2023-08-19 07:01:46", "lastmod": "2023-10-20 22:17:38", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } } ] }, "title": "CRIS Measurements of Electron-Capture-Decay Isotopes: ^(37)Ar, ^(44)Ti, ^(49)V, ^(51)Cr, ^(55)Fe, and ^(57)Co", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Copernicus GmbH.\n\nThis research was supported by the National Aeronautics and Space Administration at the California Institute of Technology (under grant NAG5-6912), the Goddard Space Flight Center, the Jet Propulsion Laboratory, and Washington University in St. Louis. One of us (S.M.N.) also wishes to acknowledge the support of the Mr. and Mrs. Spencer T. Olin Foundation.\n\nPublished - 2001-55.pdf
", "abstract": "The secondary isotopes ^(37)Ar, ^(44)Ti, ^(49)V, ^(51)Cr, ^(55)Fe, and ^(57)Co decay only by electron capture, which occurs preferentially at the lower cosmic-ray energies, where electron attachment is more likely. Measurements of the abundances of these isotopes may reveal the interstellar energies of cosmic rays during propagation and whether reacceleration occurred. Stable secondary isotopes may also be used to examine energy dependence and reacceleration. The Cosmic Ray Isotope Spectrometer has detected large numbers of these nuclei at 100 - 500 MeV/nucleon during a time spanning solar minimum and solar maximum, allowing an additional study of solar modulation. This paper will discuss several subiron abundance ratios and the implications for reacceleration and solar modulation.", "date": "2001", "date_type": "published", "publisher": "Copernicus Systems and Technology GmbH", "id_number": "CaltechAUTHORS:20150303-135509933", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150303-135509933", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "2001-55", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Simon-Manfred", "name": { "family": "Simon", "given": "M." } }, { "id": "Lorenz-E", "name": { "family": "Lorenz", "given": "E." } }, { "id": "Pohl-M", "name": { "family": "Pohl", "given": "M." } } ] }, "primary_object": { "basename": "2001-55.pdf", "url": "https://authors.library.caltech.edu/records/tb6er-82z45/files/2001-55.pdf" }, "pub_year": "2001", "author_list": "Wiedenbeck, M. E.; George, J. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/39e8v-n7704", "eprint_id": 55458, "eprint_status": "archive", "datestamp": "2023-08-19 07:00:48", "lastmod": "2023-10-20 22:16:07", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Temporal Variations in Solar Energetic Particle Events", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Copernicus Gesellschaft 2001.\n\nThis research was supported by the National Aeronautics and Space Administration at the Goddard Space Flight Center, the California Institute of Technology (under grant NAG5-6912), and the Jet Propulsion Laboratory. TvR acknowledges assistance\nfrom Hilary Cane with determining associated solar event\nlocations.\n\nPublished - 2001-42.pdf
", "abstract": "The Solar Isotope Spectrometer (SIS) on-board the Advanced Composition Explorer (ACE) spacecraft has measured elemental abundances in large solar energetic particle\n(SEP) events as a function of time for more than 25\nsuch events. There are large temporal variations in the observed abundances within events, from event to event, and\nas a function of particle energy. Such variations have been\npreviously attributed to the combination of an initial impulsive phase having enhanced heavy element abundances with a longer gradual phase with coronal abundances. More recently they have been attributed to rigidity dependent escape from CME-driven shocks through plasma waves generated\nby wave-particle interactions. Both these models can\nbe expected to depend upon solar longitude since impulsive\nevents are associated with longitudes well-connected magnetically to the observer, and shock properties and connection of the observer to the shock are also longitude dependent. We present evidence of longitude related variations. In addition, we show that there are events with little time variation and heavy element enhancements similar to those of impulsive events. These events appear to be difficult to explain in current models in which particles are accelerated with coronal abundances. Rather, these events seem to require abundance enhancements either in the source material or in the acceleration process.", "date": "2001", "date_type": "published", "publisher": "Copernicus Systems and Technology GmbH", "id_number": "CaltechAUTHORS:20150303-100220896", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150303-100220896", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "2001-42", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Simon-M", "name": { "family": "Simon", "given": "M." } }, { "id": "Lorenz-E", "name": { "family": "Lorenz", "given": "E." } }, { "id": "Pohl-M", "name": { "family": "Pohl", "given": "M." } } ] }, "primary_object": { "basename": "2001-42.pdf", "url": "https://authors.library.caltech.edu/records/39e8v-n7704/files/2001-42.pdf" }, "pub_year": "2001", "author_list": "von Rosenvinge, T. T.; Christian, E. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/bhrzc-wn317", "eprint_id": 55463, "eprint_status": "archive", "datestamp": "2023-08-19 07:01:08", "lastmod": "2023-10-20 22:16:24", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Are Solar Energetic Particles an Accelerated Sample of Solar Wind?", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Copernicus GmbH.\n\nThis work was supported by NASA at the California Institute of Technology (under grant NAS5-6912), the Jet Propulsion Laboratory, and Goddard Space Flight Center.\n\nPublished - 2001-47.pdf
", "abstract": "In the current picture of gradual solar energetic particle (SEP) events, the acceleration is believed to take place at a shock driven by a coronal mass ejection as it moves through the corona and out into the solar wind. It is\noften assumed that the solar wind provides the seed\nparticles that are accelerated and later observed at 1 AU.\nWe compare solar energetic particle and solar wind\ncomposition measurements, focusing on a comparison of\nthe fractionation patterns with respect to first ionization\npotential. On the basis of several significant differences\nbetween the solar wind and SEP compositions, we conclude\nthat most SEPs with energies >5 MeV/nucleon are not\nsimply an accelerated sample of solar wind. Rather, SEPs\nand fast and slow solar wind appear to be distinct samples\nof coronal material with significantly different fractionation patterns. This implies that solar energetic particles must be accelerated within a few solar radii of the Sun.", "date": "2001", "date_type": "published", "publisher": "Copernicus Systems and Technology GmbH", "id_number": "CaltechAUTHORS:20150303-110535538", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150303-110535538", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "2001-47", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "2001-47.pdf", "url": "https://authors.library.caltech.edu/records/bhrzc-wn317/files/2001-47.pdf" }, "pub_year": "2001", "author_list": "Mewaldt, R. A.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/g0rfd-mn020", "eprint_id": 55486, "eprint_status": "archive", "datestamp": "2023-08-19 07:01:50", "lastmod": "2023-10-20 22:17:41", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Connell-J-J", "name": { "family": "Connell", "given": "J. J." } }, { "id": "Audouin-L", "name": { "family": "Audouin", "given": "L." } }, { "id": "Bacri-C-O", "name": { "family": "Bacri", "given": "C.-O." } }, { "id": "Berthier-B", "name": { "family": "Berthier", "given": "B." } }, { "id": "Ferrant-L", "name": { "family": "Ferrant", "given": "L." } }, { "id": "Rejmund-F", "name": { "family": "Rejmund", "given": "F." } }, { "id": "St\u00e9phan-C", "name": { "family": "St\u00e9phan", "given": "C." } }, { "id": "Tassan-Got-L", "name": { "family": "Tassan-Got", "given": "L." } }, { "id": "Karamanis-D", "name": { "family": "Karamanis", "given": "D." } }, { "id": "Czajkowski-S", "name": { "family": "Czajkowski", "given": "S." } }, { "id": "Boudard-A", "name": { "family": "Boudard", "given": "A." } }, { "id": "Ducret-J-E", "name": { "family": "Ducret", "given": "J.-E." } }, { "id": "Fernandez-B", "name": { "family": "Fernandez", "given": "B." } }, { "id": "Leray-S", "name": { "family": "Leray", "given": "S." } }, { "id": "Villagrasa-C", "name": { "family": "Villagrasa", "given": "C." } }, { "id": "Volant-C", "name": { "family": "Volant", "given": "C." } }, { "id": "Faestermann-T", "name": { "family": "Faestermann", "given": "T." } }, { "id": "Enqvist-T", "name": { "family": "Enqvist", "given": "T." } }, { "id": "Hammache-F", "name": { "family": "Hammache", "given": "F." } }, { "id": "Helariutta-K", "name": { "family": "Helariutta", "given": "K." } }, { "id": "Jurado-B", "name": { "family": "Jurado", "given": "B." } }, { "id": "Schmidt-K-H", "name": { "family": "Schmidt", "given": "K.-H." } }, { "id": "S\u00fcmmerer-K", "name": { "family": "S\u00fcmmerer", "given": "K." } }, { "id": "Ricciardi-M-V", "name": { "family": "Ricciardi", "given": "M.-V." } }, { "id": "Viv\u00e8s-F", "name": { "family": "Viv\u00e8s", "given": "F." } }, { "id": "Heinz-A", "name": { "family": "Heinz", "given": "A." } }, { "id": "Benlliure-J", "name": { "family": "Benlliure", "given": "J." } }, { "id": "Casarejos-E", "name": { "family": "Casarejos", "given": "E." } }, { "id": "Ordonez-M-F", "name": { "family": "Ordonez", "given": "M. F." } }, { "id": "Pereira-Conca-J", "name": { "family": "Pereira-Conca", "given": "J." } }, { "id": "Junghans-A-R", "name": { "family": "Junghans", "given": "A. R." } } ] }, "title": "New Measurements of Fragmentation Cross Sections from ^(56)Fe and ^(60)Ni Beams at Energies Relevant to Galactic Cosmic-Ray Propagation", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Copernicus GmbH.\n\nParticipation in these measurements was supported\nat the California Institute of Technology and the Jet Propulsion Laboratory by NASA (under grant NAG5-6912). We gratefully acknowledge the assistance of the technical staff in the SIS and FRS groups at GSI.\n\nPublished - 2001-56.pdf
", "abstract": "Models of cosmic-ray propagation in the Galaxy rely heavily on knowledge of the nuclear fragmentation cross sections which govern spallation of heavy nuclei in the interstellar medium. Interpretation of high-precision cosmic-ray composition data such as those from the ACE and Ulysses missions requires improved cross-section data. New measurements of partial fragmentation cross sections have been made with high statistical accuracy at the GSI heavy ion synchrotron (SIS) using ^(56)Fe beams at five energies between 300 and 1500 MeV/nucleon, and 60 Ni beams at 500 and 1000 MeV/nucleon, on a liquid hydrogen target. We report on progress in analyzing these data.", "date": "2001", "date_type": "published", "publisher": "Copernicus Systems and Technology GmbH", "id_number": "CaltechAUTHORS:20150303-140050267", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150303-140050267", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "2001-56", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Simon-M", "name": { "family": "Simon", "given": "M." } }, { "id": "Lorenz-E", "name": { "family": "Lorenz", "given": "E." } }, { "id": "Pohl-M", "name": { "family": "Pohl", "given": "M." } } ] }, "primary_object": { "basename": "2001-56.pdf", "url": "https://authors.library.caltech.edu/records/g0rfd-mn020/files/2001-56.pdf" }, "pub_year": "2001", "author_list": "George, J. S.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/ncqxw-m5406", "eprint_id": 54998, "eprint_status": "archive", "datestamp": "2023-08-19 06:59:08", "lastmod": "2024-01-13 16:15:44", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Liewer-P-C", "name": { "family": "Liewer", "given": "P. C." } } ] }, "title": "Scientific Payload for an Interstellar Probe Mission", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright \u00a9 2001 COSPAR. All rights reserved.\n\nAvailable online 29 July 2007.\n\nPublished - 2000-10.pdf
", "abstract": "NASA's Interstellar Probe Mission will be the first spacecraft specifically designed to explore the outer solar system, pass through the boundaries of the heliosphere, and sample the nearby interstellar medium. During the spring of 1999, NASA's Interstellar Probe Science and Technology Definition Team* developed a concept for a mission that will travel to 200- 400 AU using solar-sail propulsion. The principal scientific goals would be to explore the outer solar system, explore the structure of the heliosphere and its interaction with the interstellar medium, and explore the nature of the interstellar medium itself. These studies\nwould be carried out by a -150 kg spacecraft carrying a scientific payload designed to make comprehensive measurements of heliospheric and interstellar plasma, fields, energetic particles, neutral gas, and dust. We discuss the scientific goals and strawman payload for this\nmission.", "date": "2001", "date_type": "published", "publisher": "Elsevier", "place_of_pub": "Dordrecht, Netherlands", "pagerange": "451-464", "id_number": "CaltechAUTHORS:20150219-095040574", "isbn": "978-0-444-50909-3", "book_title": "Proceedings of the COSPAR Colloquium", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150219-095040574", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "2000-10", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Scherer-K", "name": { "family": "Scherer", "given": "Klaus" } }, { "id": "Fichtner-H", "name": { "family": "Fichtner", "given": "Horst" } }, { "id": "J\u00f6rg-Fahr H", "name": { "family": "J\u00f6rg Fahr", "given": "Hans" } }, { "id": "Marsch-E", "name": { "family": "Marsch", "given": "Eckart" } } ] }, "doi": "10.1016/S0964-2749(01)80105-0", "primary_object": { "basename": "2000-10.pdf", "url": "https://authors.library.caltech.edu/records/ncqxw-m5406/files/2000-10.pdf" }, "pub_year": "2001", "author_list": "Mewaldt, R. A. and Liewer, P. C." }, { "id": "https://authors.library.caltech.edu/records/668ap-x0037", "eprint_id": 55467, "eprint_status": "archive", "datestamp": "2023-08-19 07:01:17", "lastmod": "2023-10-20 22:16:37", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Gloeckler-G", "name": { "family": "Gloeckler", "given": "G." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "Dwyer-J-R", "name": { "family": "Dwyer", "given": "J. R." } }, { "id": "Gold-R-E", "name": { "family": "Gold", "given": "R. E." } }, { "id": "Krimigis-S-M", "name": { "family": "Krimigis", "given": "S. M." }, "orcid": "0000-0003-2781-2386" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mazur-J-E", "name": { "family": "Mazur", "given": "J. E." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Zurbechen-T-H", "name": { "family": "Zurbechen", "given": "T. H." } } ] }, "title": "Fluences of Solar, Heliospheric, and Galactic Particles at 1 AU", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Copernicus Gesellschaft 2001.\n\nThis research was supported by NASA at each of the participating institutions.\n\nPublished - 2001-49.pdf
", "abstract": "We report energy spectra of He, O, and Fe nuclei from ~0.3 keV/nucleon to ~300 MeV/nucleon, integrated from late-1997 to mid-2000. These fluence measurements were made at 1 AU using data from instruments on ACE, and include contributions from fast and slow solar wind, coronal mass ejections, pickup ions, impulsive and gradual solar particle events, particles accelerated in corotating interaction regions and other interplanetary shocks, and anomalous and galactic cosmic rays. Fluence measurements of six additional species are presented from ~0.04 to ~100 MeV/nucleon. We discuss the relative contributions of various particle components, comment on the energy spectra, and consider the implications for particle acceleration processes, cosmic ray spectra and particles implanted in the lunar soil.", "date": "2001", "date_type": "published", "publisher": "Copernicus Systems and Technology GmbH", "id_number": "CaltechAUTHORS:20150303-111820409", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150303-111820409", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" } ] }, "other_numbering_system": { "items": [ { "id": "2001-49", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Simon-M", "name": { "family": "Simon", "given": "M." } }, { "id": "Lorenz-E", "name": { "family": "Lorenz", "given": "E." } }, { "id": "Pohl-M", "name": { "family": "Pohl", "given": "M." } } ] }, "primary_object": { "basename": "2001-49.pdf", "url": "https://authors.library.caltech.edu/records/668ap-x0037/files/2001-49.pdf" }, "pub_year": "2001", "author_list": "Mewaldt, R. A.; Mason, G. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/pd9r4-j6345", "eprint_id": 55483, "eprint_status": "archive", "datestamp": "2023-08-19 07:01:41", "lastmod": "2023-10-20 22:17:27", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } } ] }, "title": "The Isotopic Composition of Cosmic-Ray Calcium", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Copernicus Gesellschaft 2001.\n\nThis research was supported by NASA at the California Institute of Technology (under grant NAGS-6912), the\nJet Propulsion Laboratory, the Goddard Space Flight Center, and Washington University. We thank the participants and support staff responsible for the success of the GSI cross-section experiment.\n\nPublished - 2001-54.pdf
", "abstract": "The isotopic composition of galactic cosmic-ray Ca has been measured over the energy range \u02dc 150 to 400 MeV/nuc on the Advanced Composition Explorer (ACE) mission. Using the measured abundances of the dominantly-secondary Ca isotopes with A = 41-46 as constraints, in combination with measured cross sections for the production of Ca isotopes by fragmentation of ^(56)Fe on hydrogen, we show that the two doubly-magic isotopes ^(40)Ca and ^(48)Ca consist mainly of primary material. We find that their relative abundances in the cosmic-ray source are very similar to those found in solar-system material, in spite of the fact that different types of stars are thought to be responsible for producing these two isotopes. This observation is consistent with the view that cosmic rays are derived from a mixed sample of interstellar matter.", "date": "2001", "date_type": "published", "publisher": "Copernicus Systems and Technology GmbH", "id_number": "CaltechAUTHORS:20150303-134629834", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150303-134629834", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGS-6912" } ] }, "other_numbering_system": { "items": [ { "id": "2001-54", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Simon-M", "name": { "family": "Simon", "given": "M." } }, { "id": "Lorenz-E", "name": { "family": "Lorenz", "given": "E." } }, { "id": "Pohl-M", "name": { "family": "Pohl", "given": "M." } } ] }, "primary_object": { "basename": "2001-54.pdf", "url": "https://authors.library.caltech.edu/records/pd9r4-j6345/files/2001-54.pdf" }, "pub_year": "2001", "author_list": "Wiedenbeck, M. E.; George, J. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/r8qbr-vjw95", "eprint_id": 55164, "eprint_status": "archive", "datestamp": "2023-08-19 06:59:13", "lastmod": "2024-01-13 16:16:13", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Brunner-R-J", "name": { "family": "Brunner", "given": "R. J." } }, { "id": "Prince-T-A", "name": { "family": "Prince", "given": "T." }, "orcid": "0000-0002-8850-3627" }, { "id": "Good-J-C", "name": { "family": "Good", "given": "J." } }, { "id": "Handley-T-H", "name": { "family": "Handley", "given": "T. H." } }, { "id": "Lonsdale-C-J", "name": { "family": "Lonsdale", "given": "C." }, "orcid": "0000-0003-0898-406X" }, { "id": "Djorgovski-S-G", "name": { "family": "Djorgovski", "given": "S. G." }, "orcid": "0000-0002-0603-3087" } ] }, "title": "The Digital Sky Project: Prototyping Virtual Observatory Technologies", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2001 Astronomical Society of the Pacific. Provided by the NASA Astrophysics Data System. \n\nWe wish to thank the members of the Digital Sky project, which is funded through the NPACI program (NSF Cooperative Agreement ACI-96-19020), and the many Pasadena area virtual observatory enthusiasts\nfor stimulating discussions.\n\nPublished - 2000-48.pdf
", "abstract": "Astronomy is entering a new era as multiple, large area,\ndigital sky surveys are in production. The resulting datasets are truly remarkable in their own right; however, a revolutionary step arises in the aggregation of complimentary multi-wavelength surveys (i.e., the crossidentification of a billion sources) . The federation of these large datasets is already underway, and is producing a major paradigm shift as Astronomy has suddenly become an immensely data-rich field. This new paradigm\nwill enable quantitatively and qualitatively new science, from statistical studies of our Galaxy and the large-scale structure in the universe, to discoveries of rare, unusual, or even completely new types of astronomical objects and phenomena. Federating and then exploring these large\ndatasets, however, is an extremely challenging task. The Digital Sky project was initiated with this task in mind and is working to develop the techniques and technologies necessary to solve the problems inherent in federating these large databases, as well as the mining of the resultant aggregate data.", "date": "2001", "date_type": "published", "publisher": "Astronomical Society of the Pacific", "place_of_pub": "San Francisco, CA", "pagerange": "135-141", "id_number": "CaltechAUTHORS:20150224-160246756", "isbn": "1-58381-057-9", "book_title": "Virtual Observatories of the Future", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150224-160246756", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "ACI-96-19020" } ] }, "other_numbering_system": { "items": [ { "id": "2000-48", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" }, { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" } ] }, "contributors": { "items": [ { "id": "Brunner-R-J", "name": { "family": "Brunner", "given": "Robert J." } }, { "id": "Djorgovski-S-G", "name": { "family": "Djorgovski", "given": "S. George" } }, { "id": "Szalay-A-S", "name": { "family": "Szalay", "given": "Alex S." } } ] }, "primary_object": { "basename": "2000-48.pdf", "url": "https://authors.library.caltech.edu/records/r8qbr-vjw95/files/2000-48.pdf" }, "pub_year": "2001", "author_list": "Brunner, R. J.; Prince, T.; et el." }, { "id": "https://authors.library.caltech.edu/records/atyfe-yze51", "eprint_id": 55465, "eprint_status": "archive", "datestamp": "2023-08-19 07:01:12", "lastmod": "2023-10-20 22:16:31", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "deNolfo-G-A", "name": { "family": "deNolfo", "given": "G. A." } }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Solar Energetic Particle Anisotropies from the ACE Solar Isotope Spectrometer", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Copernicus Gesellschaft 2001.\n\nWe thank Andrew Davis for providing the sunpulse timing data and for helpful discussions. We appreciate the work of the EPAM and MAG science teams in generating their Level 2 data products and that of the ACE Science Center in making these data readily available. Details on solar and interplanetary\nactivity were obtained from NOAA through the Space Environment\nCenter web site. This research was supported by NASA at the California Institute of Technology (under grant NAG5-6912), the Jet Propulsion Laboratory, and the Goddard Space Flight Center.\n\nPublished - 2001-48.pdf
", "abstract": "Although not specifically designed for it, the Solar Isotope Spectrometer (SIS) on the Advanced Composition Explorer spacecraft is sensitive to particle anisotropies of heavy ions at energies of tens of MeV/nucleon. Using the arrival time of each particle (to the nearest second) and the trajectory measured with the instrument's position sensing detector, the arrival direction of each particle may be determined to \u02dc30\u00b0 in azimuth about the spacecraft spin axis and to better than 1\u00b0 in zenith angle from the axis. This allows the angular distribution of particles to be measured within the \u02dc145\u00b0 wide field of view of the instrument, from which the intensities both along the field and perpendicular to it can usually be determined. We describe how anisotropies are obtained from SIS and present examples demonstrating some of the capabilities of SIS in studying anisotropies. With further analysis, SIS can contribute to studies exploring the dependence of particle angular distributions on energy and species.", "date": "2001", "date_type": "published", "publisher": "Copernicus Systems and Technology GmbH", "id_number": "CaltechAUTHORS:20150303-111154005", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150303-111154005", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "2001-48", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Simon-M", "name": { "family": "Simon", "given": "M." } }, { "id": "Lorenz-E", "name": { "family": "Lorenz", "given": "E." } }, { "id": "Pohl-M", "name": { "family": "Pohl", "given": "M." } } ] }, "primary_object": { "basename": "2001-48.pdf", "url": "https://authors.library.caltech.edu/records/atyfe-yze51/files/2001-48.pdf" }, "pub_year": "2001", "author_list": "Leske, R. A.; deNolfo, G. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/jv38d-6tn11", "eprint_id": 55481, "eprint_status": "archive", "datestamp": "2023-08-19 07:01:32", "lastmod": "2023-10-20 22:17:20", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Lijowski-M", "name": { "family": "Lijowski", "given": "M." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Measurements of the Isotopes of Lithium, Beryllium, and Boron from ACE/CRIS", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Copernicus Gesellschaft 2001.\n\nThis work was supported by NASA at NASA Goddard Space Flight Center, the Jet Propulsion Laboratory, Washington\nUniversity and the California Institute of Technology (under\ngrant NAG5-6912).\n\nPublished - 2001-52.pdf
", "abstract": "The cosmic-ray isotopes of lithium, beryllium, and boron (LiBeB) are generally believed to originate from interactions within the interstellar medium, primarily through CNO spallation. Other sources are known to contribute to the abundance of ^7Li and ^(11)B, most notably the production of ^7Li from big bang nucleosynthesis. Thus, identifying the abundances of the galactic cosmic-ray LiBeB places important constraints on the interpretations of early epoch nucleosynthesis. The Cosmic Ray Isotope Spectrometer (CRIS) on ACE has been measuring isotopic composition from helium through zinc in the energy range \u02dc70-500 MeV/nucleon since 1997 with high statistical accuracy. We present measurements of the isotopic abundances of LiBeB from CRIS and discuss these observations in the context of previous cosmic-ray measurements and predictions from cosmic-ray transport models.", "date": "2001", "date_type": "published", "publisher": "Copernicus Systems and Technology GmbH", "id_number": "CaltechAUTHORS:20150303-131355783", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150303-131355783", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "2001-52", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Simon-M", "name": { "family": "Simon", "given": "M." } }, { "id": "Lorenz-E", "name": { "family": "Lorenz", "given": "E" } }, { "id": "Pohl-M", "name": { "family": "Pohl", "given": "M." } } ] }, "primary_object": { "basename": "2001-52.pdf", "url": "https://authors.library.caltech.edu/records/jv38d-6tn11/files/2001-52.pdf" }, "pub_year": "2001", "author_list": "de Nolfo, G. A.; Yanasak, N. E.; et el." }, { "id": "https://authors.library.caltech.edu/records/tdnp8-wys03", "eprint_id": 55413, "eprint_status": "archive", "datestamp": "2023-08-19 07:00:18", "lastmod": "2023-10-20 22:13:06", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hams-T", "name": { "family": "Hams", "given": "T." } }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Bremerich-M", "name": { "family": "Bremerich", "given": "M." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "deNolfo-G-A", "name": { "family": "deNolfo", "given": "G. A." } }, { "id": "Geier-S", "name": { "family": "Geier", "given": "S." }, "orcid": "0000-0002-3948-9339" }, { "id": "Gobel-H", "name": { "family": "Gobel", "given": "H." } }, { "id": "Gupta-S-K", "name": { "family": "Gupta", "given": "S. K." } }, { "id": "Hof-M", "name": { "family": "Hof", "given": "M." }, "orcid": "0000-0003-2884-3037" }, { "id": "Menn-W", "name": { "family": "Menn", "given": "W." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Simon-Manfred", "name": { "family": "Simon", "given": "M." } }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } } ] }, "title": "^(10)Be/^9Be ratio up to 1.0 GeV/nucleon measured in the ISOMAX 98 balloon flight", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Copernicus GmbH.\n\nThis experiment was supported by grant NASA RTOP 353-87-02 at Goddard, by NAGS-5227 at CalTech, and by DFG Si 290/8 at University of Siegen, Germany. We would like ro thank the many engineers and technicians that maid ISOMAX a success as well as the Nacional Scientific Balloon Facility.\n\nPublished - 2001-19.pdf
", "abstract": "The Isotope Magnet Experiment, ISOMAX, a balloon-borne superconducting magnet spectrometer was built with the capability to measure the isotopic composition of the light isotopes (3 \u2264 Z \u2264 8) of the cosmic radiation up to 4 GeV/nucleon by using the \u03b2 vs. rigidity technique with a mass resolution better than 0.25 amu, employing a combination of time-of-flight (TOF) system and silica-aerogel Cherenkov counters for the velocity determination. One of the primary scientific goals of ISOMAX was the accurate measurement of radioactive 10 Be with respect to its stable neighbor isotope 9 Be conveying information on the age of the cosmic rays in the galaxy. ISOMAX had its first flight on August 4-5, 1998, from Lynn Lake, Manitoba, Canada. It provided 13 h of data with a residual atmosphere of less than 5 g/cm^2 . This paper reports the results of the beryllium ratio 10 Be/9 Be = 0.195 \u00b1 0.036 at the top of atmosphere in the energy range from 0.261 - 1.030 GeV/nucleon using the TOF in the 1998 flight. The high energy results of the beryllium ratio up to 2 GeV/nucleon in the Cherenkov regime as well as the lithium results in the TOF energy range are also reported in these proceedings.", "date": "2001", "date_type": "published", "publisher": "Copernicus Systems and Technology GmbH", "id_number": "CaltechAUTHORS:20150302-113922419", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150302-113922419", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-5227" }, { "agency": "NASA", "grant_number": "RTOP 353-87-02" } ] }, "other_numbering_system": { "items": [ { "id": "2001-19", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Simon-M", "name": { "family": "Simon", "given": "M." } }, { "id": "Lorenz-E", "name": { "family": "Lorenz", "given": "E." } }, { "id": "Pohl-M", "name": { "family": "Pohl", "given": "M." } } ] }, "primary_object": { "basename": "2001-19.pdf", "url": "https://authors.library.caltech.edu/records/tdnp8-wys03/files/2001-19.pdf" }, "pub_year": "2001", "author_list": "Hams, T.; Barbier, L. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/7v9wq-d1223", "eprint_id": 55473, "eprint_status": "archive", "datestamp": "2023-08-19 07:01:27", "lastmod": "2023-10-20 22:16:56", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } } ] }, "title": "The Evolution of Galactic Cosmic Ray Element Spectra from Solar Minimum to Solar Maximim: ACE Measurements", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Copernicus GmbH.\n\nThis research was supported by NASA at the California Institute of Technology (under grant NAG5-6912), the\nJet Propulsion Laboratory, the Goddard Space Flight Center, and Washington University. We are grateful to Gautam D. Badhwar at NASA Johnson Space Flight Center for providing GCR environment model data, and to the developers of CREME96 for presenting their programs on the Web for public use,\n\nPublished - 2001-51.pdf
", "abstract": "The spectra of galactic cosmic ray (GCR) elements from Beryllium to Nickel in the energy range 40 - 500 MeV/nucleon at 1 AU are being continuously measured by\ninstruments on-board the Advanced Composition Explorer\n(ACE). The collecting power of these instruments allows statistically precise spectra to be calculated every few months for most elements. Measurements of temporal variations in GCR spectra over the solar cycle are important for understanding solar modulation processes, and also for refining models of the near-earth radiation environment used to perform shielding and dose calculations for manned and unmanned space missions. We report on ACE observations of the evolution of GCR element spectra from solar minimum in 1997 through Spring 2001. We find significant differences between the ACE measurements and the predictions of available models of the near-Earth radiation environment, suggesting that these models need revision. We describe a cosmic ray interstellar propagation and solar modulation model that provides an improved fit to the ACE measurements compared to radiation environment models currently in use.", "date": "2001", "date_type": "published", "publisher": "Copernicus Systems and Technology GmbH", "id_number": "CaltechAUTHORS:20150303-114316464", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150303-114316464", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "2001-51", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Simon-M", "name": { "family": "Simon", "given": "M." } }, { "id": "Lorenz-E", "name": { "family": "Lorenz", "given": "E." } }, { "id": "Pohl-M", "name": { "family": "Pohl", "given": "M." } } ] }, "primary_object": { "basename": "2001-51.pdf", "url": "https://authors.library.caltech.edu/records/7v9wq-d1223/files/2001-51.pdf" }, "pub_year": "2001", "author_list": "Davis, A. J.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/agf5g-ahz49", "eprint_id": 55417, "eprint_status": "archive", "datestamp": "2023-08-19 07:00:23", "lastmod": "2023-10-20 22:13:24", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Bremerich-M", "name": { "family": "Bremerich", "given": "M." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "Geier-S", "name": { "family": "Geier", "given": "S." }, "orcid": "0000-0002-3948-9339" }, { "id": "Gobel-H", "name": { "family": "Gobel", "given": "H." } }, { "id": "Gupta-S-K", "name": { "family": "Gupta", "given": "S. K." } }, { "id": "Hams-T", "name": { "family": "Hams", "given": "T." } }, { "id": "Hof-M", "name": { "family": "Hof", "given": "M." }, "orcid": "0000-0003-2884-3037" }, { "id": "Menn-W", "name": { "family": "Menn", "given": "W." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Simons-M", "name": { "family": "Simons", "given": "M." }, "orcid": "0000-0003-1412-6395" }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } } ] }, "title": "A Measurement of the ^(10)Be/^9Be ratio above 1.0 GeV/nucleon: Results from the 1998 Flight of ISOMAX", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Copernicus Gesellschaft 2001.\n\nThis work was supported by grant NAG5-5227 ac Caltech and by NASA RTOP 353-87-02 at Goddard and DFG Si290/8 at the University of Sicgeu. We would also like to t11ank the\nmany engineers and technicians that made ISOMAX a success as\nwell as Lhe National Scientific Balloon Facility.\n\nPublished - 2001-20.pdf
", "abstract": "The Isotope Magnet Experiment, ISOMAX, was a balloon-borne instrument designed to measure the isotopic composition of the light elements in cosmic rays (3 \u2264 Z \u2264 8), with a particular emphasis on the measurement of the radioactive isotope 10 Be. ISOMAX, flown in August 1998 from Lynn Lake, Manitoba, Canada, measured isotope mass with excellent resolution by combining velocity measurements from a time-of-flight (TOF) system and two Cherenkov detectors with magnetic rigidity (charge/momentum) measurements from the magnetic spectrometer. Velocity from the TOF can be used to resolve isotopes of beryllium from \u02dc0.2 GeV/nucleon to just above 1 GeV/nucleon. The Cherenkov counters employed silica-aerogel radiators with indices of refraction n=1.14, corresponding to an energy threshold of \u02dc1 GeV/nucleon. Thus, the velocity measurement from the Cherenkov counters complements and extends the energy range covered by the TOF. We discuss improvements to the mass resolution above Cherenkov threshold and present results for the 10 Be/9 Be and 7 Be/Be ratios in the energy range covered by the Cherenkov counters (1.1-2.0 GeV/nucleon).", "date": "2001", "date_type": "published", "publisher": "Copernicus Systems and Technology GmbH", "id_number": "CaltechAUTHORS:20150302-130614026", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150302-130614026", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-9503" }, { "agency": "NASA", "grant_number": "RTOP 353-87-02" } ] }, "other_numbering_system": { "items": [ { "id": "2001-20", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" }, { "id": "Division-of-Geological-and-Planetary-Sciences" } ] }, "contributors": { "items": [ { "id": "Simon-M", "name": { "family": "Simon", "given": "M." } }, { "id": "Lorenz-E", "name": { "family": "Lorenz", "given": "E." } }, { "id": "Pohl-M", "name": { "family": "Pohl", "given": "M." } } ] }, "primary_object": { "basename": "2001-20.pdf", "url": "https://authors.library.caltech.edu/records/agf5g-ahz49/files/2001-20.pdf" }, "pub_year": "2001", "author_list": "de Nolfo, G. A.; Barbier, L. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/ad6pb-g2f38", "eprint_id": 55482, "eprint_status": "archive", "datestamp": "2023-08-19 07:01:36", "lastmod": "2023-10-20 22:17:23", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "The Cosmic-Ray Contribution to LiBeB: Interpretation of LiBeB Abundances from CRIS", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Copernicus Gesellschaft 2001.\n\nThis research was supported by NASA at the California\nInstitute of Technology (under grant NAG5-6912), the Jet Propulsion Laboratory, and the Goddard Space Flight Center.\n\nPublished - 2000-53.pdf
", "abstract": "The bulk of galactic Li, Be, and B (LiBeB) abundances is believed to be created during energetic inelastic collisions of cosmic-ray and interstellar medium (ISM) nuclei. Additional sources such as big bang nucleosynthesis or neutrino-driven spallation within Type II supernovae may also add a small contribution. However, measurements of the elemental ratios Be/H, B/H, and Fe/H in old, low-metallicity halo stars indicate an overabundance of LiBeB that can not be accounted for by fragmentation of cosmic-ray CNO. This interpretation assumes that the ISM in any epoch serves as a source of material both for star formation and for cosmic rays, which contribute fragmentation material in later epochs. We have simulated cosmic-ray transport using a simple model and present an interpretation of the abundance measurements from the Cosmic Ray Isotope Spectrometer (CRIS) during the past three years. We will discuss the implications on cosmic-ray LiBeB production at lower energies.", "date": "2001", "date_type": "published", "publisher": "Copernicus Systems and Technology GmbH", "id_number": "CaltechAUTHORS:20150303-133259423", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150303-133259423", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "2001-53", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Simon-Manfred", "name": { "family": "Simon", "given": "M." } }, { "id": "Lorenz-E", "name": { "family": "Lorenz", "given": "E." } }, { "id": "Pohl-M", "name": { "family": "Pohl", "given": "M." } } ] }, "primary_object": { "basename": "2000-53.pdf", "url": "https://authors.library.caltech.edu/records/ad6pb-g2f38/files/2000-53.pdf" }, "pub_year": "2001", "author_list": "Leske, R. A.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/1rs1t-36b39", "eprint_id": 55459, "eprint_status": "archive", "datestamp": "2023-08-19 07:00:53", "lastmod": "2023-10-20 22:16:11", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Examining the Abundances of Rare Elements in Solar Energetic Particle Events", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Copernicus GmbH.\n\nThis work was supported by NASA at Caltech (under grant NAG5-6912), Jet Propulsion Laboratory, and Goddard Space Flight Center.\n\nPublished - 2001-43.pdf
", "abstract": "Using data accumulated with the Solar Isotope Spectrometer on ACE during 27 large solar energetic particle (SEP) events the effects of charge-to-mass (Q/M) fractionation on rare elements are examined. In an attempt to correct for these fractionation effects and obtain preliminary estimates of the coronal abundances of K, Ti, Cr, Mn, Co, Ni, Cu, and Zn, the SEP events are classified according to their Fe/Si ratio. The data from all events within an Fe/Si category are summed and the rare element abundances extracted over an energy interval of 20 to 65 MeV/nucleon. We estimated the apparent Q/M fractionation, corrected for it, and obtained initial results which are encouraging.", "date": "2001", "date_type": "published", "publisher": "Copernicus Systems and Technology GmbH", "id_number": "CaltechAUTHORS:20150303-102207197", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150303-102207197", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "2001-43", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Simon-M", "name": { "family": "Simon", "given": "M." } }, { "id": "Lorenz-E", "name": { "family": "Lorenz", "given": "E." } }, { "id": "Pohl-M", "name": { "family": "Pohl", "given": "M." } } ] }, "primary_object": { "basename": "2001-43.pdf", "url": "https://authors.library.caltech.edu/records/1rs1t-36b39/files/2001-43.pdf" }, "pub_year": "2001", "author_list": "Cohen, C. M. S.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/kb0sy-xwx26", "eprint_id": 55411, "eprint_status": "archive", "datestamp": "2023-08-19 07:00:09", "lastmod": "2023-10-20 22:12:59", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "High Energy Ionic Charge State Composition in Large Solar Energetic Particle Events", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Copernicus GmbH. Provided by the NASA Astrophysics Data System.\n\nThis research was supported by NASA NAS5-30704 and NAGW-1919.\n\nPublished - 2001-17.pdf
", "abstract": "Measurements of ionic charge states in solar energetic particle (SEP) events have been made at relatively high energies (> 15 MeV/nucleon) with the Mass Spectrometer Telescope (MAST) on board the Solar, Anomalous, and Magnetospheric Particle Explorer (SAMPEX) satellite using the Earth's magnetic field as a particle rigidity filter. We have examined the largest SEP events of solar cycle 23 and determined ionic charge states of Fe and other elements in several of these events. The mean charge state of Fe is often considerably higher (~20) in impulsive SEP events than in gradual events (~15). Surprisingly, in several cases, relatively high charge states of around 20 were found for Fe in very large events which are most likely gradual. Further, our measurements also show that Si in these events is not necessarily in thermal equilibrium with other elements.", "date": "2001", "date_type": "published", "publisher": "Copernicus Systems and Technology GmbH", "id_number": "CaltechAUTHORS:20150302-112545330", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150302-112545330", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGW-1919" }, { "agency": "NASA", "grant_number": "NAS5-30704" } ] }, "other_numbering_system": { "items": [ { "id": "2001-17", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Simon-M", "name": { "family": "Simon", "given": "M." } }, { "id": "Lorenz-E", "name": { "family": "Lorenz", "given": "E." } }, { "id": "Pohl-M", "name": { "family": "Pohl", "given": "M." } } ] }, "primary_object": { "basename": "2001-17.pdf", "url": "https://authors.library.caltech.edu/records/kb0sy-xwx26/files/2001-17.pdf" }, "pub_year": "2001", "author_list": "Labrador, A. W.; Leske, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/p2g6c-pjs66", "eprint_id": 103053, "eprint_status": "archive", "datestamp": "2023-08-19 07:05:53", "lastmod": "2024-01-15 03:01:30", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Lijowski-M-L", "name": { "family": "Lijowski", "given": "M." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "The Origin of Primary Cosmic Rays: Constraints from ACE Elemental and Isotopic Composition Observations", "ispublished": "unpub", "full_text_status": "restricted", "note": "\u00a9 Kluwer Academic Publishers. 2001. \n\n(Received 29 September 2000; Accepted in final form: 15 January 2001) \n\nWe are grateful to the large group of dedicated individuals that participated in the development of the CRIS instrument (listed in Stone et al., 1998). We also thank J. Klarmann for contributions to the CRIS data analysis. This research was supported by the National Aeronautics and Space Administration at the California Institute of Technology (under grant NAG5-6912), the Jet Propulsion Laboratory, the Goddard Space Plight Center, and Washington University.", "abstract": "Cosmic-ray isotope observations from NASA's Advanced Composition Explorer (ACE) mission have been used to investigate the composition of cosmic-ray source material. Source abundances relative to \u2075\u2076Fe are reported for eleven isotopes of Ca, Fe, Co, and Ni, including the very rare isotopes \u2074\u2078Ca and \u2076\u2074Ni. Although the source abundances range over a factor ~ 10\u2074, most of the ratios to \u2075\u2076Fe are consistent with solar-system values to within ~ 20%. However, there are some notable differences, the most significant being an excess of ~ (70 \u00b1 30)% relative to the solar system for the cosmic-ray source ratio \u2075\u2078Fe/\u2075\u2076Fe. The possible association of such an excess with a contribution to the cosmic-ray source from Wolf\u2014Rayet star ejecta is discussed.", "date": "2001", "date_type": "published", "publisher": "Springer Netherlands", "place_of_pub": "Dordrecht", "pagerange": "15-26", "id_number": "CaltechAUTHORS:20200506-160349946", "isbn": "9789048158621", "book_title": "The Astrophysics of Galactic Cosmic Rays", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20200506-160349946", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA/Caltech", "grant_number": "NAG5-6912" }, { "agency": "JPL" }, { "agency": "Goddard Space Flight Center" }, { "agency": "Washington University" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Diehl-R", "name": { "family": "Diehl", "given": "Roland" } }, { "id": "Parizot-E", "name": { "family": "Parizot", "given": "Etinenne" } }, { "id": "Kallenbach-R", "name": { "family": "Kallenbach", "given": "Reinald" } }, { "id": "von-Steiger-R", "name": { "family": "von Steiger", "given": "Rudolf" } } ] }, "doi": "10.1007/978-94-017-3239-0_2", "pub_year": "2001", "author_list": "Wiedenbeck, M. E.; Yanasak, N. E.; et el." }, { "id": "https://authors.library.caltech.edu/records/a0yc4-be489", "eprint_id": 55420, "eprint_status": "archive", "datestamp": "2023-08-19 07:00:33", "lastmod": "2023-10-20 22:13:35", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Westphal-A-J", "name": { "family": "Westphal", "given": "A. J." } }, { "id": "Weaver-B-A", "name": { "family": "Weaver", "given": "B. A." } }, { "id": "Solarz-M", "name": { "family": "Solarz", "given": "M." } }, { "id": "Dominguez-G", "name": { "family": "Dominguez", "given": "G." } }, { "id": "Craig-N", "name": { "family": "Craig", "given": "N." } }, { "id": "Adams-J-H-Jr", "name": { "family": "Adams", "given": "J. H., Jr." } }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Doke-T", "name": { "family": "Doke", "given": "T." } }, { "id": "Hasebe-N", "name": { "family": "Hasebe", "given": "N." } }, { "id": "Hayashi-T", "name": { "family": "Hayashi", "given": "T." } }, { "id": "Ogura-K", "name": { "family": "Ogura", "given": "K." } }, { "id": "Tarle-G", "name": { "family": "Tarle", "given": "G." } }, { "id": "Tomasch-A", "name": { "family": "Tomasch", "given": "A." } }, { "id": "Schubnell-N", "name": { "family": "Schubnell", "given": "N." } }, { "id": "Tawara-H", "name": { "family": "Tawara", "given": "H." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Yasuda-N", "name": { "family": "Yasuda", "given": "N." } } ] }, "title": "ECCO: Th/U/Pu/Cm Dating of Galactic Cosmic Ray Nuclei", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Copernicus GmbH.\n\nPublished - 2001-24.pdf
", "abstract": "The ECCO instrument is one of two instruments which comprise the HNX mission. The principal goal of ECCO (the Extremely-heavy Cosmic-ray Composition Observer) is to measure the age of galactic cosmic ray nuclei using the actinides (Th, U, Pu, Cm) as clocks. As a bonus, ECCO will search with unprecedented sensitivity for longlived elements in the superheavy island of stability. ECCO is an enormous array (23 m2 ) of BP-1 glass track-etch detectors, and is based on the successful flight heritage of the Trek detector which was deployed externally on Mir. We present a description of the instrument, estimates of expected performance, and recent calibrations which demonstrate that the actinides can be resolved from each other with good charge resolution.", "date": "2001", "date_type": "published", "publisher": "Copernicus Systems and Technology GmbH", "id_number": "CaltechAUTHORS:20150302-133128195", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150302-133128195", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "2001-24", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Simon-Manfred", "name": { "family": "Simon", "given": "M." } }, { "id": "Lorenz-E", "name": { "family": "Lorenz", "given": "E." } }, { "id": "Pohl-M", "name": { "family": "Pohl", "given": "M." } } ] }, "primary_object": { "basename": "2001-24.pdf", "url": "https://authors.library.caltech.edu/records/a0yc4-be489/files/2001-24.pdf" }, "pub_year": "2001", "author_list": "Westphal, A. J.; Weaver, B. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/by6j8-ejq69", "eprint_id": 55419, "eprint_status": "archive", "datestamp": "2023-08-19 07:00:28", "lastmod": "2023-10-20 22:13:32", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Goebel-H", "name": { "family": "Goebel", "given": "H." } }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Bremerich-M", "name": { "family": "Bremerich", "given": "M." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "Geier-S", "name": { "family": "Geier", "given": "S." }, "orcid": "0000-0002-3948-9339" }, { "id": "Gupta-S-K", "name": { "family": "Gupta", "given": "S. K." } }, { "id": "Hams-T", "name": { "family": "Hams", "given": "T." } }, { "id": "Hof-M", "name": { "family": "Hof", "given": "M." }, "orcid": "0000-0003-2884-3037" }, { "id": "Menn-W", "name": { "family": "Menn", "given": "W." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Simon-Manfred", "name": { "family": "Simon", "given": "M." } }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } } ] }, "title": "The ^7Li/^6Li ratio in the energy range from 150 to 1300 MeV/nucleon Measured with the balloon-borne ISOMAX 98 instrument in the upper atmosphere", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Copernicus Gesellschaft 2001.\n\nThis experiment was supported by grant NASA RTOP 353-87-02 at Goddard, by NAG5-5227 at CalTech, and by DFG Si 290/8 at Siegen. We would like to thank the many engineers and technicians that maid ISOMAX a success as well as the\nNational Scientific Balloon Facility.\n\nPublished - 2001-21.pdf
", "abstract": "We report on the measured ^7Li/^6Li ratio at an atmospheric depth of 4.6 g/cm^2 in the energy range from 183 to 1314 MeV/nucleon, using the Isotope Magnet Experiment (ISOMAX). This balloon-borne magnetic spectrometer in combination with a Time-of-Flight system (TOF) and a silica-aerogel Cherenkov detector was built to measure the isotopic composition of the light elements (3 \u2264 Z \u2264 8) in the cosmic radiation up to several GeV/nucleon. ISOMAX was flown on August 4-5, 1998, from Lynn Lake, Manitoba, Canada. The data was collected during 13 hours at an altitude which corresponds to a residual atmosphere of less than 5 g/cm2 . The results on 10 Be/9 Be ratio are presented in the these proceedings by Hams et al. (2001) in the TOF regime and by de Nolfo et al. (2001) in the Cherenkov regime.", "date": "2001", "date_type": "published", "publisher": "Copernicus Systems and Technology GmbH", "id_number": "CaltechAUTHORS:20150302-132105751", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150302-132105751", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "RTOP 353-87-02" }, { "agency": "NASA", "grant_number": "NAG5-5227" } ] }, "other_numbering_system": { "items": [ { "id": "2001-21", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Simon-M", "name": { "family": "Simon", "given": "M." } }, { "id": "Lorenz-E", "name": { "family": "Lorenz", "given": "E." } }, { "id": "Pohl-M", "name": { "family": "Pohl", "given": "M." } } ] }, "primary_object": { "basename": "2001-21.pdf", "url": "https://authors.library.caltech.edu/records/by6j8-ejq69/files/2001-21.pdf" }, "pub_year": "2001", "author_list": "Goebel, H.; Barbier, L. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/6ak2k-cdd89", "eprint_id": 55421, "eprint_status": "archive", "datestamp": "2023-08-19 07:00:38", "lastmod": "2023-10-20 22:13:38", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Adams-J-H-Jr", "name": { "family": "Adams", "given": "J. H., Jr." } }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Craig-N", "name": { "family": "Craig", "given": "N." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "Doke-T", "name": { "family": "Doke", "given": "T." } }, { "id": "Hasebe-N", "name": { "family": "Hasebe", "given": "N." } }, { "id": "Hayashi-T", "name": { "family": "Hayashi", "given": "T." } }, { "id": "Lee-D", "name": { "family": "Lee", "given": "D." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mark-D", "name": { "family": "Mark", "given": "D." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Ogura-K", "name": { "family": "Ogura", "given": "K." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Tari-G", "name": { "family": "Tarl", "given": "G." } }, { "id": "Tawara-H", "name": { "family": "Tawara", "given": "H." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Westphal-A-J", "name": { "family": "Westphal", "given": "A .J." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Yasuda-N", "name": { "family": "Yasuda", "given": "N." } } ] }, "title": "The Energetic Trans-Iron Composition Experiment (ENTICE) on the Heavy Nuclei Explorer (HNX) Mission", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Copernicus GmbH. Provided by the NASA Astrophysics Data System\n\nThis research was supported in part by the National Aeronautics and Space Administration under grant NAG5- I 0802 and by the McDonnell Center for the Space Sciences at\nWashington University.\n\nPublished - 2001-22.pdf
", "abstract": "The HNX mission is composed of the ENTICE and ECCO experiments. The experimental goal of ENTICE is to measure with high precision the elemental abundances of all nuclei with 10\u2264Z\u226482. This will enable us to determine if the injection mechanism for the cosmic ray accelerator is controlled by FIP or Volatility and to study the mix of nucleosynthetic processes that contribute to the galactic cosmic ray source. The ENTICE experiment utilizes the dE/dx-C method of charge determination and consists of silicon dE/dx detectors, Cherenkov detectors with two different refractive indices, and a fiber hodoscope. We will describe the instrument and its performance based on beam tests of a prototype instrument.", "date": "2001", "date_type": "published", "publisher": "Copernicus Systems and Technology GmbH", "id_number": "CaltechAUTHORS:20150302-133152754", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150302-133152754", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG-10802" } ] }, "other_numbering_system": { "items": [ { "id": "2001-22", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Simon-Manfred", "name": { "family": "Simon", "given": "M." } }, { "id": "Lorenz-E", "name": { "family": "Lorenz", "given": "E." } }, { "id": "Pohl-M", "name": { "family": "Pohl", "given": "M." } } ] }, "primary_object": { "basename": "2001-22.pdf", "url": "https://authors.library.caltech.edu/records/6ak2k-cdd89/files/2001-22.pdf" }, "pub_year": "2001", "author_list": "Israel, M. H.; Adams, J. H., Jr.; et el." }, { "id": "https://authors.library.caltech.edu/records/y6dee-67g63", "eprint_id": 55552, "eprint_status": "archive", "datestamp": "2023-08-19 07:02:04", "lastmod": "2023-10-20 22:23:00", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "A Search for ^7Be in Solar Energetic Particle Events", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Copernicus Gesellschaft 2001.\n\nThis research was supported by the National Aeronautics and Space Administration at the Goddard Space Flight Center, the California Institute of Technology (under grant NAGS-6912), and the Jet Propulsion Laboratory.\n\nPublished - 2003-05.pdf
", "abstract": "The LDEF spacecraft measured an unexpectedly high level of ^7Be, presumably swept up from the residual atmosphere. However, it is unclear whether the atmospheric ^7Be is due to particles originating in nuclear reachtions at the Sun, or due to secondary fragments from coll isions between energetic particles (solar and galactic) and the atmosphere. The Solar Isotope Spectrometer (SIS) on ACE has been measuring solar energetic particles since launch in 1997. We will present the results of a search for solar ^7Be\nabove about 5 MeV/nucleon with the SIS instrument.", "date": "2001", "date_type": "published", "publisher": "Copernicus Systems and Technology GmbH", "id_number": "CaltechAUTHORS:20150305-133531087", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150305-133531087", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "2003-05", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Simon-M", "name": { "family": "Simon", "given": "M." } }, { "id": "Lorenz-E", "name": { "family": "Lorenz", "given": "E." } }, { "id": "Pohls-M", "name": { "family": "Pohls", "given": "M." } } ] }, "primary_object": { "basename": "2003-05.pdf", "url": "https://authors.library.caltech.edu/records/y6dee-67g63/files/2003-05.pdf" }, "pub_year": "2001", "author_list": "Christian, E. R.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/80drf-86g62", "eprint_id": 55460, "eprint_status": "archive", "datestamp": "2023-08-19 07:00:58", "lastmod": "2023-10-20 22:16:14", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Mass Fractionation in Solar Energetic Particles and the Isotopic Composition of the Corona", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Copernicus GmbH.\n\nThis research was supported by NASA at the California Institute of Technology (under grant NAG5-6912), the\nJet Propulsion Laboratory, and the Goddard Space Flight Center.\n\nPublished - 2001-44.pdf
", "abstract": "Using the Solar Isotope Spectrometer on the Advanced\nComposition Explorer, the isotopic composition of solar energetic particles (SEPs) has been measured in 18\nlarge SEP events for abundant elements from C through Ni\nat energies of tens of Me V /nucleon. Although SEP isotopic\ncomposition is found to vary widely from event to event, it is strongly correlated with the elemental composition, suggesting that elemental and isotopic fractionation relative to the coronal source are largely governed by the same processes. Using empirical correlations to correct for the fractionation yields preliminary coronal isotopic abundance values in good agreement with those found in the solar wind, with comparable accuracy.", "date": "2001", "date_type": "published", "publisher": "Copernicus Systems and Technology GmbH", "id_number": "CaltechAUTHORS:20150303-102937851", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150303-102937851", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "2001-44", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Simon-M", "name": { "family": "Simon", "given": "M." } }, { "id": "Lorenz-E", "name": { "family": "Lorenz", "given": "E." } }, { "id": "Pohl-M", "name": { "family": "Pohl", "given": "M." } } ] }, "primary_object": { "basename": "2001-44.pdf", "url": "https://authors.library.caltech.edu/records/80drf-86g62/files/2001-44.pdf" }, "pub_year": "2001", "author_list": "Leske, R. A.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/qxcnn-37f36", "eprint_id": 103085, "eprint_status": "archive", "datestamp": "2023-08-21 21:53:09", "lastmod": "2024-01-15 03:01:34", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Niebur-S-M", "name": { "family": "Niebur", "given": "S. M." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Radioactive Clocks and Cosmic-Ray Transport in the Galaxy", "ispublished": "unpub", "full_text_status": "restricted", "keywords": "Energetic Particle; Advance Composition Explorer; Galactic Halo; Monte Carlo Diffusion; Fragmentation Cross Section", "note": "\u00a9 2001 Kluwer Academic Publishers. \n\nReceived 14 September 2000; Accepted in final form: 15 March 2001. \n\nThis work was supported by NASA (under NAG5-6912) at the California Institute of Technology, the Jet Propulsion Laboratory, Washington University, and Goddard Space Flight Center. We appreciate the hospitality of the International Space Science Institute in hosting this workshop.", "abstract": "There are a number of radioactive 'clocks' in the cosmic radiation that can be used to measure the time scales for cosmic ray processes in the Galaxy. With high-resolution isotope measurements available from ACE it is now possible to read these clocks with greatly improved accuracy and address key questions about the origin and lifetime of cosmic rays. This paper discusses the status of three such investigations.", "date": "2001", "date_type": "published", "publisher": "Springer Netherlands", "place_of_pub": "Dordrecht", "pagerange": "27-39", "id_number": "CaltechAUTHORS:20200508-135103238", "isbn": "9789048158621", "book_title": "The Astrophysics of Galactic Cosmic Rays", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20200508-135103238", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Diehl-R", "name": { "family": "Diehl", "given": "Roland" } }, { "id": "Parizot-E", "name": { "family": "Parizot", "given": "Etienne" } }, { "id": "Kallenbach-R", "name": { "family": "Kallenbach", "given": "Reinald" } }, { "id": "von-Steiger-R", "name": { "family": "von Steiger", "given": "Rudolf" } } ] }, "doi": "10.1007/978-94-017-3239-0_3", "pub_year": "2001", "author_list": "Mewaldt, R. A.; Yanasak, N. E.; et el." }, { "id": "https://authors.library.caltech.edu/records/jjm0n-ep343", "eprint_id": 55277, "eprint_status": "archive", "datestamp": "2023-08-19 06:59:22", "lastmod": "2023-10-20 22:03:19", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" } ] }, "title": "Estimate of the Location of the Solar wind Termination Shock", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Copernicus GmbH. Provided by the NASA Astrophysics Data System\n\nThis work was supported by NASA under contract NAS7-9 I 8.\n\nPublished - 2001-14.pdf
", "abstract": "Over the next three years the termination shock is\nexpected to reach its minimum distance from the Sun before\nmoving outward again in response to increased solar wind\ndynamic pressure during the new solar cycle. Five different\nmethods of inferring the distance to the shock lead to estimates that cluster in the range of 90\u00b1 LO AU. In August 2001 Voyager I will be at 82 AU and moving outward at 3.6 AU\nper year, suggesting the possibility of encountering the termination shock by 2005 before it starts moving outward again.", "date": "2001", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150226-150957759", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150226-150957759", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-918" } ] }, "other_numbering_system": { "items": [ { "id": "2001-14", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "2001-14.pdf", "url": "https://authors.library.caltech.edu/records/jjm0n-ep343/files/2001-14.pdf" }, "pub_year": "2001", "author_list": "Stone, E. C. and Cummings, A. C." }, { "id": "https://authors.library.caltech.edu/records/97ex1-m2g09", "eprint_id": 55407, "eprint_status": "archive", "datestamp": "2023-08-19 06:59:39", "lastmod": "2023-10-20 22:12:45", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Onset of Solar Modulation in the Outer Heliosphere as Seen in Anomalous Cosmic Rays", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Copernicus GmbH. Provided by the NASA Astrophysics Data System.\n\nTh.is work was supported by NASA under contract NAS7-918. We thank the Wilcox Solar Observatory for the heliospheric Lill values and coronal field maps\n(lmp://quake.stanford.edu/ wso/wso.html ). We thank the MIT Space Plasma Group for supplying the daily averaged IMP-8 solar wind speeds\n(ftp://space.mit.edu/pub/plasma/imp/www/imp.html). We thank the ACE/SWEPAM team for supplying lhe ACE solar wind speeds\n(http://www.srl .cal tech.edu/ ACE/ ASC/level2/index.html).\n\nPublished - 2001-15.pdf
", "abstract": "We examine intensities and gradients of anomalous cosmic rays determined from observations on the Voyager 1 and 2 spacecraft to study the rapid increase in solar modulation that begins near mid-2000. We suggest that these effects are due to the arrival in the region of the spacecraft of complex magnetic field topologies associated with the reversal of the Sun's magnetic field.", "date": "2001", "date_type": "published", "publisher": "Copernicus Systems and Technology GmbH", "id_number": "CaltechAUTHORS:20150302-110723970", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150302-110723970", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG7-918" } ] }, "other_numbering_system": { "items": [ { "id": "2001-15", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Simon-M", "name": { "family": "Simon", "given": "M." } }, { "id": "Lorenz-E", "name": { "family": "Lorenz", "given": "E." } }, { "id": "Pohl-M", "name": { "family": "Pohl", "given": "M." } } ] }, "primary_object": { "basename": "2001-15.pdf", "url": "https://authors.library.caltech.edu/records/97ex1-m2g09/files/2001-15.pdf" }, "pub_year": "2001", "author_list": "Cummings, A. C. and Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/dqfq5-fvf16", "eprint_id": 99172, "eprint_status": "archive", "datestamp": "2023-08-21 21:50:31", "lastmod": "2024-01-14 21:59:19", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Yost-S-A", "name": { "family": "Yost", "given": "Sarah A." } }, { "id": "Sari-R", "name": { "family": "Sari", "given": "Re'em" }, "orcid": "0000-0002-1084-3656" }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Berger-Edo", "name": { "family": "Berger", "given": "Edo" }, "orcid": "0000-0002-9392-9681" }, { "id": "Diercks-A", "name": { "family": "Diercks", "given": "Alan" } }, { "id": "Galama-T-J", "name": { "family": "Galama", "given": "Titus" } }, { "id": "Reichart-D-E", "name": { "family": "Reichart", "given": "Dan" }, "orcid": "0000-0002-5060-3673" }, { "id": "Frail-D-A", "name": { "family": "Frail", "given": "Dale" } }, { "id": "Price-P-A", "name": { "family": "Price", "given": "Paul A." } } ] }, "title": "Physical Constraints from Broadband Afterglow Fits: GRB000926 as an Example", "ispublished": "unpub", "full_text_status": "restricted", "keywords": "Compton Scattering; Intrinsic Parameter; Wind Model; Intrinsic Variability; Synchrotron Emission", "note": "\u00a9 2001 Springer-Verlag Berlin Heidelberg. \n\nFirst Online: 14 October 2003.", "abstract": "We develop a model to fit the broadband afterglows of GRBs from the intrinsic parameters of the fireball's synchrotron emission, and apply it to a few wellstudied events, with the goal of constraining the intrinsic variability of GRB parameters. We give an example here of fitting to the recent bright event GRB000926.", "date": "2001", "date_type": "published", "publisher": "Springer", "place_of_pub": "Berlin", "pagerange": "204-206", "id_number": "CaltechAUTHORS:20191009-073118337", "isbn": "978-3-540-42771-1", "book_title": "Gamma-Ray Bursts in the Afterglow Era", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20191009-073118337", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Costa-E", "name": { "family": "Costa", "given": "Enrico" } }, { "id": "Frontera-F", "name": { "family": "Frontera", "given": "Filippo" } }, { "id": "Hjorth-J", "name": { "family": "Hjorth", "given": "Jens" } } ] }, "doi": "10.1007/10853853_56", "pub_year": "2001", "author_list": "Yost, Sarah A.; Sari, Re'em; et el." }, { "id": "https://authors.library.caltech.edu/records/q31da-0pd79", "eprint_id": 55520, "eprint_status": "archive", "datestamp": "2023-08-19 07:01:55", "lastmod": "2023-10-20 22:20:04", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "McDonald-F-B", "name": { "family": "McDonald", "given": "F. B." } }, { "id": "Burlaga-L-F", "name": { "family": "Burlaga", "given": "L. F." }, "orcid": "0000-0002-5569-1553" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Heikkila-B-C", "name": { "family": "Heikkila", "given": "B. C." } }, { "id": "Lal-N", "name": { "family": "Lal", "given": "N." } }, { "id": "Ness-N-F", "name": { "family": "Ness", "given": "N. F." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Richardson-J-D", "name": { "family": "Richardson", "given": "J. D." }, "orcid": "0000-0003-4041-7540" }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "The July 14th, 2000 \"Bastille Day\" solar event as observed by Voyagers 1 and 2 in the distant heliosphere", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Copernicus GmbH.\n\nPublished - 2002-07.pdf
", "abstract": "One of the most powerful solar events observed over the current cycle occurred at 1024 July 14, 2000 accompanied by an X-5.7 x-ray burst and a full halo coronal mass ejection that initially was traveling at a velocity of > 1700 km/s. At earth the solar energetic particle event was the largest so far in cycle 23. Some 177 days later (2001.02) at V-2 (63 AU, 24\u00baS) there began a step decrease in the cosmic ray intensity (15% for 265 MeV/n GCR He) and a complex enhancement with multiple structure in the magnitude of the interplanetary magnetic field. For lowenergy 2.3 MeV protons there was a 10-fold increase in intensity that tracks the increase in the solar wind velocity which reached a peak value of ~450 km/s. This event is discussed in the context of the increases in intensity of MeV ions and the modulation events for galactic and anomalous cosmic rays that have been observed in the distant heliosphere for solar cycle 23 through 2001.4.", "date": "2001", "date_type": "published", "publisher": "Copernicus Systems and Technology GmbH", "id_number": "CaltechAUTHORS:20150304-133315782", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150304-133315782", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "2002-07", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Simon-M", "name": { "family": "Simon", "given": "M." } }, { "id": "Lorenz-E", "name": { "family": "Lorenz", "given": "E" } }, { "id": "Pohl-M", "name": { "family": "Pohl", "given": "M." } } ] }, "primary_object": { "basename": "2002-07.pdf", "url": "https://authors.library.caltech.edu/records/q31da-0pd79/files/2002-07.pdf" }, "pub_year": "2001", "author_list": "McDonald, F. B.; Burlaga, L. F.; et el." }, { "id": "https://authors.library.caltech.edu/records/hzest-tsn04", "eprint_id": 55410, "eprint_status": "archive", "datestamp": "2023-08-19 06:59:44", "lastmod": "2023-10-20 22:12:55", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Inferring Energetic Particle Mean Free Paths from Observations of Anomalous Cosmic Rays in the Outer Heliosphere at Solar Maximum", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Copernicus GmbH. Provided by the NASA Astrophysics Data System\n\nThis work was supported by NASA under contract NAS7-918. We thank the Wllcox Solar Observatory for the he-1 iospheric ti lt values (http://quake.stanford.edu/ wso/wso.html). We\nthank the MTT Space Plasma Group for supplying the daily averaged IMP-8 solar wind speeds\n(ftp://space.mit.edu/pub/plasma/imp/www/imp.html). We thank the ACE/SWEPAM team for supplying the ACE solar wind speeds\n(hltp://www.srl .cal tech .cdu/ ACE/ ASC/level2/i ndex .htm I).\n\nPublished - 2001-16.pdf
", "abstract": "We find that the mean free pathlength is higher by a factor of 10 or more at solar minimum than at the last solar maximum in 1900-1991, consistent with previous findings. In 2000-2001, the mean free pathlength has declined by a factor of ~10, but is still larger by a factor of ~3.6 than its value of ~0.15 AU in 1990-1991. As solar maximum conditions become durably established in the outer heliosphere over the next few months, it may be possible to deduce the radial dependence of the mean free pathlength.", "date": "2001", "date_type": "published", "publisher": "Copernicus Systems and Technology GmbH", "id_number": "CaltechAUTHORS:20150302-111956144", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150302-111956144", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG7-918" } ] }, "other_numbering_system": { "items": [ { "id": "2001-16", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Simon-M", "name": { "family": "Simon", "given": "M." } }, { "id": "Lorenz-E", "name": { "family": "Lorenz", "given": "E." } }, { "id": "Pohl-M", "name": { "family": "Pohl", "given": "M." } } ] }, "primary_object": { "basename": "2001-16.pdf", "url": "https://authors.library.caltech.edu/records/hzest-tsn04/files/2001-16.pdf" }, "pub_year": "2001", "author_list": "Cummings, A. C. and Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/v8hq7-0j281", "eprint_id": 91487, "eprint_status": "archive", "datestamp": "2023-08-21 21:46:02", "lastmod": "2024-01-14 21:15:39", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Boggs-S-E", "name": { "family": "Boggs", "given": "Steven E." }, "orcid": "0000-0001-9567-4224" }, { "id": "Lin-R-P", "name": { "family": "Lin", "given": "Robert P." } }, { "id": "Dennis-B-R", "name": { "family": "Dennis", "given": "Brian R." } }, { "id": "Madden-N-W", "name": { "family": "Madden", "given": "Norman W." } }, { "id": "von-Ballmoos-P", "name": { "family": "von Ballmoos", "given": "Peter" } }, { "id": "Thomsen-K", "name": { "family": "Thomsen", "given": "Knud" } }, { "id": "Hurford-G-J", "name": { "family": "Hurford", "given": "Gordon J." } }, { "id": "Hurley-K-C", "name": { "family": "Hurley", "given": "Kevin C." } }, { "id": "Smith-D-M", "name": { "family": "Smith", "given": "David M." }, "orcid": "0000-0002-0542-5759" }, { "id": "Jean-P", "name": { "family": "Jean", "given": "Pierre" } }, { "id": "Knoedlseder-J", "name": { "family": "Knoedlseder", "given": "Juergen" } }, { "id": "Millan-R-M", "name": { "family": "Millan", "given": "Robyn M." } } ] }, "title": "Cyclone Hard X-Ray Observatory", "ispublished": "unpub", "full_text_status": "public", "keywords": "high energy astrophysics; x-ray/gamma-ray detectors; satellite missions", "note": "\u00a9 2000 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nS. Boggs would like to thank Caltech for support through the Millikan Fellowship Program. We would also like to thank R. Lingenfelter, D. Lamb, C. Thompson, and R. Duncan for participation in scientific discussions.\n\nPublished - 166.pdf
", "abstract": "In response to the recent NASA-SMEX Announcement of Opportunity, our collaboration proposed Cyclone, the Cyclotron/Nuclear Explorer. Cyclone is a broadband pointed astrophysical observatory, combining the highest spectral resolutions (E/(Delta) E approximately 30 - 300) and angular resolutions (15') achieved in the optimized hard X-ray range (10 - 200 keV). The instrument consists of 19 co-aligned rotation modulation collimator (RMC) telescopes, each with a high spectral resolution, 6-cm diameter germanium detector (GeD) covering energies from 3 keV to 600 keV. Both the optics and detectors are actively shielded with 15-mm BGO to gain low background an high sensitivity to astrophysical sources. A 550-km altitude, circular equatorial orbit also minimizes background. Building strongly upon instrumental heritage from the High-Energy Solar Spectroscopic Imager (HESSI) program, Cyclone would be ready for launch by September 2003. The instrument design and expected performance are discussed, as well as a brief overview of scientific goals.", "date": "2000-12-13", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "166-177", "id_number": "CaltechAUTHORS:20181204-132725848", "isbn": "9780819437853", "book_title": "X-Ray and Gamma-Ray Instrumentation for Astronomy XI", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20181204-132725848", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Robert A. Millikan Fellowship" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Flanagan-K-A", "name": { "family": "Flanagan", "given": "Kathryn A." } }, { "id": "Siegmund-O-H-W", "name": { "family": "Siegmund", "given": "Oswald H. W." } } ] }, "doi": "10.1117/12.409159", "primary_object": { "basename": "166.pdf", "url": "https://authors.library.caltech.edu/records/v8hq7-0j281/files/166.pdf" }, "pub_year": "2000", "author_list": "Boggs, Steven E.; Lin, Robert P.; et el." }, { "id": "https://authors.library.caltech.edu/records/p4s1s-b5521", "eprint_id": 55273, "eprint_status": "archive", "datestamp": "2023-08-19 06:49:11", "lastmod": "2024-01-13 16:16:25", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mao-Peter-H", "name": { "family": "Mao", "given": "Peter H." } }, { "id": "Bellan-L", "name": { "family": "Bellan", "given": "Leon" } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Windt-D-L", "name": { "family": "Windt", "given": "David L." } }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "Finn E." }, "orcid": "0000-0001-5679-1946" } ] }, "title": "Evaluation and optimization of multilayer desigs for astronomical x-ray telescopes using a field-of-view- and energy-dependent figure of merit", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 (2000) COPYRIGHT SPIE--The International Society for Optical Engineering. \n\nThis research was supported in part by NASA Supporting Research and Technology (SR&T) grant NAG5-5128, NASA Explorer Technology grant NAG5-8535, and by a NASA Graduate Student Researchers Program (GSRP) Fellowship (P.H. Mao). This research was performed in part using the Center for Advanced Computing Resources (CACR) parallel computer system operated by Caltech. P.H. Mao thanks Prof. Thomas Prince for access to CACR's services and Dr. Stuart Anderson for advice and guidance on parallel computing codes.\n\nSubmitted - 2001-05.pdf
", "abstract": "The three most important quantities used to assess the performance of astronomical x-ray telescope optics are the\non-axis collecting area, the field of view, and the half-power diameter. The first two quantities depend on the mirror packing arrangement and the multilayer coating design. In order to optimize the coating design, we have developed a figure-of-merit (FOM) that accounts for the coating response over a specified range of energies and off-axis angles. We present an example where we have used this FOM to optimize a specific coating design for the High Energy Focusing Telescope (HEFT) and to understand tradeoffs between performance and coating thickness.", "date": "2000-11-28", "date_type": "published", "publisher": "SPIE", "place_of_pub": "Bellingham, WA", "pagerange": "126-133", "id_number": "CaltechAUTHORS:20150226-144130935", "isbn": "0-8194-3783-2", "book_title": "Proceedings of the Society of Photo-Optical Engineers (SPIE)", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150226-144130935", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-8535" } ] }, "other_numbering_system": { "items": [ { "id": "2001-05", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Hoover-R-B", "name": { "family": "Hoover", "given": "R. B." } }, { "id": "Walker-A-B-C", "name": { "family": "Walker", "given": "A. B. C." } } ] }, "doi": "10.1117/12.407561", "primary_object": { "basename": "2001-05.pdf", "url": "https://authors.library.caltech.edu/records/p4s1s-b5521/files/2001-05.pdf" }, "pub_year": "2000", "author_list": "Mao, Peter H.; Bellan, Leon; et el." }, { "id": "https://authors.library.caltech.edu/records/3by3y-13v32", "eprint_id": 91482, "eprint_status": "archive", "datestamp": "2023-08-19 06:49:21", "lastmod": "2024-01-14 21:15:33", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mao-Peter-H", "name": { "family": "Mao", "given": "Peter H." } }, { "id": "Bellan-L-M", "name": { "family": "Bellan", "given": "Leon" } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Windt-D-L", "name": { "family": "Windt", "given": "David L." } }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "Finn E." }, "orcid": "0000-0001-5679-1946" } ] }, "title": "Evaluation and optimization of multilayer designs for astronomical x-ray telescopes using a field-of-view- and energy-dependent figure of merit", "ispublished": "unpub", "full_text_status": "public", "keywords": "multilayer optimization, x-ray optics", "note": "\u00a9 2000 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nThis research was supported in part by NASA Supporting Research and Technology (SR&T) grant NAG5-5128, NASA Explorer Technology grant NAG5-8535, and by a NASA Graduate Student Researchers Program (GSRP) Fellowship (P.H. Mao). This research was performed in part using the Center for Advanced Computing Resources (CACR) parallel computer system operated by Caltech. P.H. Mao thanks Prof. Thomas Prince for access to CACR's services and Dr. Stuart Anderson for advice and guidance on parallel computing codes.\n\nPublished - 126.pdf
", "abstract": "The three most important quantities used to assess the performance of astronomical x-ray telescope optics are the on- axis collecting area, the field of view, and the half-power diameter. The first two quantities depend on the mirror packing arrangement and the multilayer coating design. In order to optimize the coating design, we have developed a figure-of-merit (FOM) that accounts for the coating response over a specified range of energies and off-axis angles. We present an example where we have used this FOM to optimize a specific coating design for the High Energy Focusing Telescope (HEFT) and to understand tradeoffs between performance and coating thickness.", "date": "2000-11-28", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "126-133", "id_number": "CaltechAUTHORS:20181204-132725413", "isbn": "9780819437839", "book_title": "X-Ray Optics, Instruments, and Missions IV", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20181204-132725413", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-5128" }, { "agency": "NASA", "grant_number": "NAG5-8535" }, { "agency": "NASA Graduate Student Research Fellowship" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Hoover-R-B", "name": { "family": "Hoover", "given": "Richard B." } }, { "id": "Walker-A-B-C", "name": { "family": "Walker", "given": "Arthur B. C." } } ] }, "doi": "10.1117/12.407561", "primary_object": { "basename": "126.pdf", "url": "https://authors.library.caltech.edu/records/3by3y-13v32/files/126.pdf" }, "pub_year": "2000", "author_list": "Mao, Peter H.; Bellan, Leon; et el." }, { "id": "https://authors.library.caltech.edu/records/sqm5e-jpk70", "eprint_id": 88380, "eprint_status": "archive", "datestamp": "2023-08-19 06:49:15", "lastmod": "2024-01-14 20:31:58", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Romaine-S-E", "name": { "family": "Romaine", "given": "S." } }, { "id": "Ivan-A", "name": { "family": "Ivan", "given": "A." } }, { "id": "Bruni-R-J", "name": { "family": "Bruni", "given": "R." } }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "F." }, "orcid": "0000-0001-5679-1946" }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "F." }, "orcid": "0000-0003-2992-8024" }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "W." } }, { "id": "Gorenstein-P", "name": { "family": "Gorenstein", "given": "P." } } ] }, "title": "Multilayer optics for hard x-ray astronomy", "ispublished": "unpub", "full_text_status": "public", "keywords": "X-ray Telescopes, Multilayers, X-ray optics", "note": "\u00a9 2000 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nThe software used to model the data was provided by Dr. David Windt of Columbia Astrophysics Laboratory [4]; This work was supported in part by NASA contract NAG5-5095.\n\nPublished - 120.pdf
", "abstract": "We are engaged in a program to develop focusing hard X-ray optics for future X-ray astronomy missions (such as the Hard X-ray Telescope of Constellation-X) and have built a DC magnetron sputtering system to deposit multilayers on candidate substrates for future telescopes. Although our emphasis is on the multilayer coating of integral cylindrical optics which will provide the highest spatial resolution, other types of substrates can easily be coated in this system. We present specular reflectivity data (using CuK\u03b1 X- rays) of W/Si constant d and depth graded-d multilayer depositions on substrates such as thermally formed DESAG glass and Duran glass cylinders. We will present data to show both azimuthal and linear uniformity of these coatings.", "date": "2000-11-28", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "120-125", "id_number": "CaltechAUTHORS:20180731-114052333", "isbn": "9780819437839", "book_title": "X-Ray Optics, Instruments, and Missions IV", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180731-114052333", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-5095" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Hoover-R-B", "name": { "family": "Hoover", "given": "Richard B." } }, { "id": "Walker-A-B-C", "name": { "family": "Walker", "given": "Arthur B. C." } } ] }, "doi": "10.1117/12.407551", "primary_object": { "basename": "120.pdf", "url": "https://authors.library.caltech.edu/records/sqm5e-jpk70/files/120.pdf" }, "pub_year": "2000", "author_list": "Romaine, S.; Ivan, A.; et el." }, { "id": "https://authors.library.caltech.edu/records/2pmf1-nyf02", "eprint_id": 84253, "eprint_status": "archive", "datestamp": "2023-08-19 06:48:30", "lastmod": "2024-01-14 19:30:25", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Bolotnikov-A-E", "name": { "family": "Bolotnikov", "given": "Aleksey E." } }, { "id": "Boggs-S-E", "name": { "family": "Boggs", "given": "Steven E." }, "orcid": "0000-0001-9567-4224" }, { "id": "Chen-C-M-Hubert", "name": { "family": "Chen", "given": "C. M. Hubert" } }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "Walter R." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "Steven M." } } ] }, "title": "Investigation optimal contact geometry for CdZnTe pixel detectors", "ispublished": "unpub", "full_text_status": "public", "keywords": "X-ray astrophysics \u2014CdZnTe pixel detectors", "note": "\u00a9 2000 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nThe authors wish to thank B. Kecman, J.A. Burnham and B. Matthews from CIT, and M. Fitzsimmons from JPL for helping\nto fabricate CZT detectors.\n\nPublished - 243.pdf
", "abstract": "We are developing CdZnTe pixel detectors for use as focal plane sensors in astronomical hard X-ray telescopes. To optimize the spectral response and imaging performance, we are investigating the effect of contact geometry on charge collection. Specifically, we have studied contact designs with orthogonal thin strips placed between pixel contacts. We apply a negative bias on the grid with respect to the pixel potential to force charge to drift toward the contacts. The grid bias is selected to be just sufficient to avoid charge collection on the grid, while increasing the transverse electric field on the surface between contacts. In contrast to focusing electrodes designed to force field lines to terminate on the pixel contact, our approach allows us to overcome the effects of charge loss between the pixels without significant increase of the leakage current, improving the overall energy resolution of the detector. In this paper we describe the performance of a CdZnTe pixel detector containing a grid electrode, bonded to a custom low-noise VLSI readout. We discuss the advantages of this type of detector for high spectral resolution applications.", "date": "2000-11-21", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "243-252", "id_number": "CaltechAUTHORS:20180111-110139675", "isbn": "0-8194-3786-7", "book_title": "Hard X-Ray, Gamma-Ray, and Neutron Detector Physics II", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180111-110139675", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "James-R-B", "name": { "family": "James", "given": "Ralp B." } }, { "id": "Schirato-R-C", "name": { "family": "Schirato", "given": "Richard C." } } ] }, "doi": "10.1117/12.407587", "primary_object": { "basename": "243.pdf", "url": "https://authors.library.caltech.edu/records/2pmf1-nyf02/files/243.pdf" }, "pub_year": "2000", "author_list": "Bolotnikov, Aleksey E.; Boggs, Steven E.; et el." }, { "id": "https://authors.library.caltech.edu/records/zzgdd-ek732", "eprint_id": 84247, "eprint_status": "archive", "datestamp": "2023-08-19 06:48:25", "lastmod": "2024-01-14 19:30:19", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "F. A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Boggs-S-E", "name": { "family": "Boggs", "given": "S. E." }, "orcid": "0000-0001-9567-4224" }, { "id": "Bolotnikov-A-E", "name": { "family": "Bolotnikov", "given": "A." } }, { "id": "Chen-C-M-Hubert", "name": { "family": "Chen", "given": "C. M. H." } }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. R." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } } ] }, "title": "Development of CdZnTe pixel detectors for astrophysical applications", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2000 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nThis work is supported in part by NASA's SR&T program (NAGW 5-5289). FAH acknowledges support from a Presidential Early Career Award. We thank Jill Burnham and Branislav Kecman for their contributions to the detector bonding and VLSI development.\n\nPublished - 137.pdf
", "abstract": "Over the last four years we have been developing imaging Cadmium Zinc Telluride pixel detectors optimized for astrophysical focusing hard X-ray telescopes. This application requires sensors with modest area (~2cm X 2 cm), relatively small (\u227e 500\u00b5m) pixels and sub-keV energy resolution. For experiments operating in satellite orbits, low energy thresholds of ~1 - 2 keV are also desirable. In this paper we describe the desired detector performance characteristics, and report on the status of our development effort. In particular, we present results from a prototype sensor with a custom low- noise VLSI readout designed to achieve excellent spectral resolution and good imaging performance in the 2 - 100 keV band.", "date": "2000-11-21", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "137-143", "id_number": "CaltechAUTHORS:20180111-074250952", "isbn": "0-8194-3786-7", "book_title": "Hard X-Ray, Gamma-Ray, and Neutron Detector Physics II", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180111-074250952", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGW 5-5289" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "James-R-B", "name": { "family": "James", "given": "Ralph B." } }, { "id": "Schirato-R-C", "name": { "family": "Schirato", "given": "Richard C." } } ] }, "doi": "10.1117/12.407574", "primary_object": { "basename": "137.pdf", "url": "https://authors.library.caltech.edu/records/zzgdd-ek732/files/137.pdf" }, "pub_year": "2000", "author_list": "Harrison, F. A.; Boggs, S. E.; et el." }, { "id": "https://authors.library.caltech.edu/records/p6ht5-y7g83", "eprint_id": 28471, "eprint_status": "archive", "datestamp": "2023-08-19 06:19:13", "lastmod": "2024-01-13 05:50:02", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "The Solar Energetic Particle Event of 6 May 1998", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar cosmic ray particles, cosmic ray composition, element relative abundance, isotope relative abundance, shock wave effects, acceleration, data analysis", "note": "\u00a9 2000 American Institute of Physics. Issue Date: 15 September 2000. This research was supported by the National\nAeronautics and Space Administration at the California\nInstitute of Technology (under grant NAG5-6912), the\nGoddard Space Flight Center, and the Jet Propulsion\nLaboratory.\n\nPublished - ROSaipcp00.pdf
", "abstract": "The abundances of elements from helium to iron have been measured in more than a dozen moderate to large solar energetic particle (SEP) events using the Solar Isotope Spectrometer (SIS) on-board the Advanced Composition Explorer (ACE). Time variations within some of these events and from event to event have been reported previously. This paper presents an analysis of the event of 6 May 1998, for which relatively time-independent abundance ratios are found. This event has been considered to be an example of an impulsive event, a gradual event, and as a hybrid of the two. Difficulties with classifying this event are discussed.", "date": "2000-09-15", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, N.Y.", "pagerange": "111-114", "id_number": "CaltechAUTHORS:20111215-092255591", "isbn": "1-56396-951-3", "book_title": "Acceleration and Transport of Energetic Particles Observed in the Heliosphere", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111215-092255591", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA/Caltech", "grant_number": "NAG5-6912" }, { "agency": "Goddard Space Flight Center" }, { "agency": "JPL" } ] }, "other_numbering_system": { "items": [ { "id": "2000-22", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." } }, { "id": "Jokipii-J-R", "name": { "family": "Jokipii", "given": "J. R." } }, { "id": "Lee-M-A", "name": { "family": "Lee", "given": "M. A." } }, { "id": "Mobius-E", "name": { "family": "Mobius", "given": "E." } }, { "id": "Zurbuchen-T-H", "name": { "family": "Zurbuchen", "given": "T. H." } } ] }, "doi": "10.1063/1.1324291", "primary_object": { "basename": "ROSaipcp00.pdf", "url": "https://authors.library.caltech.edu/records/p6ht5-y7g83/files/ROSaipcp00.pdf" }, "pub_year": "2000", "author_list": "von Rosenvinge, T. T.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/qe5mx-nsf98", "eprint_id": 55011, "eprint_status": "archive", "datestamp": "2023-08-19 06:19:42", "lastmod": "2024-01-13 16:15:46", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Barghouty-A-F", "name": { "family": "Barghouty", "given": "A. F." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "Simulation of Charge-Equilibration and Acceleration of Solar Energetic Ions", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2000 American Institute of Physics.\n\nPublished online 15 September 2000.\n\nWork is supported by NSF grant 9810653 and NASAJOVE NAG8-1208 and by NASA grants NASS-30704 and NAGS-6912 at Caltech. A.F.B. thanks Prof. M. Yoshimori for stimulating discussions and Dr. Christina Cohen for valuable help with SOHO and ACE data.\n\nPublished - 2000-19.pdf
", "abstract": "Recent measurements of the mean ionic charge states of solar energetic iron and silicon by SAMPEX and ACE during the large solar events of 1992 November 1 and 1997 November 6 show a mean ionic charge that increases with energy. This feature has implications for the use of the observed charge state as a probe of the coronal electron temperature and density, as well as for models of ion acceleration and transport in the coronal plasma. In this paper, we show results of a nonequilibrium model for the mean ionic charge that includes shock-induced acceleration in addition to charge-changing processes. The model is able to reproduce the general features observed without, however, specifying uniquely the acceleration time and the plasma electron density. Based on our simulations for iron and silicon for the 1992 and 1997 events, and assuming a characteristic shock-acceleration time of \u223c10 sec, our model suggests an equilibration-acceleration site at heights \u223c1 solar radius above the solar surface, a density \u223c109\u200acm^(\u22123), and an electron temperature \u223c1\u22121.33\u200aMK. For ions with kinetic energy \u227330 MeV/nucleon we estimate the amount of coronal material the ions traverse to be \u223c100 \u03bcg/cm^2.", "date": "2000-09-15", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, N.Y.", "pagerange": "71-78", "id_number": "CaltechAUTHORS:20150219-113408651", "isbn": "1-56396-951-3", "book_title": "Acceleration and Transport of Energetic Particles Observed in the Heliosphere", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150219-113408651", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "9810653" }, { "agency": "NASA", "grant_number": "NASS-30704" }, { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "2000-19", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." } }, { "id": "Miller-M", "name": { "family": "Miller", "given": "Marjorie" } }, { "id": "Jokipii-J-R", "name": { "family": "Jokipii", "given": "J. R." } }, { "id": "Lee-M-A", "name": { "family": "Lee", "given": "Martin A." } }, { "id": "Zurbuchen-T-H", "name": { "family": "Zurbuchen", "given": "T. H." } }, { "id": "Mobius-E", "name": { "family": "Mobius", "given": "Eberhard" } } ] }, "doi": "10.1063/1.1324283", "primary_object": { "basename": "2000-19.pdf", "url": "https://authors.library.caltech.edu/records/qe5mx-nsf98/files/2000-19.pdf" }, "pub_year": "2000", "author_list": "Barghouty, A. F. and Mewaldt, R. A." }, { "id": "https://authors.library.caltech.edu/records/hqg5f-a5008", "eprint_id": 27942, "eprint_status": "archive", "datestamp": "2023-08-19 06:18:46", "lastmod": "2024-01-13 05:48:43", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Lijowski-M", "name": { "family": "Lijowski", "given": "M." } }, { "id": "Niebur-S-M", "name": { "family": "Niebur", "given": "S. M." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } } ] }, "title": "Galactic Cosmic Ray Neon Isotopic Abundances Measured on ACE", "ispublished": "unpub", "full_text_status": "public", "keywords": "galactic cosmic rays, cosmic ray composition, isotope relative abundance, neon, cosmic ray energy spectra, solar wind, meteorites", "note": "\u00a9 2000 American Institute of Physics. Issue Date: 15 September 2000. This research was supported by the National\nAeronautics and Space Administration at Washington\nUniversity, the California Institute of Technology\n(under grant NAG5-6912), the Jet Propulsion Laboratory, and the Goddard Space Flight Center. It was also supported by the McDonnell Center for the Space Sciences at Washington University.\n\nPublished - BINaipcp00.pdf
", "abstract": "Measurements of neon isotopic abundances from the ACE-CRIS experiment are presented. Abundances have been obtained in six energy intervals over the energy range of ~100\u2264E\u2264280 MeV/nucleon. These measurements are compared with the ACE-SIS data for lower energies extending down to ~8 MeV/nucleon. We find that the CRIS ^(22)Ne/^(20)Ne abundance ratio at the source is a factor of 5.0\u00b10.3 greater than for the solar wind. The CRIS measured abundances agree well with previous experiments. The CRIS and SIS measurements are in good agreement for the higher SIS energies. However for the lower energy SIS data, where the anomalous cosmic rays (ACR) are being sampled, the ratio decreases and agrees with solar wind abundances. The implications of these results are discussed.", "date": "2000-09-15", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, N.Y.", "pagerange": "413-416", "id_number": "CaltechAUTHORS:20111123-095344770", "isbn": "1-56396-951-3", "book_title": "Acceleration and Transport of Energetic Particles Observed in the Heliosphere", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111123-095344770", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA/Caltech", "grant_number": "NAG5-6912" }, { "agency": "Washington University McDonnell Center for the Space Sciences" } ] }, "other_numbering_system": { "items": [ { "id": "2000-32", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." } }, { "id": "Jokipii-J-R", "name": { "family": "Jokipii", "given": "J. R." } }, { "id": "Lee-M-A", "name": { "family": "Lee", "given": "M. A." } }, { "id": "Mobius-E", "name": { "family": "Mobius", "given": "E." } }, { "id": "Zurbuchen-T-H", "name": { "family": "Zurbuchen", "given": "T. H." } } ] }, "doi": "10.1063/1.1324349", "primary_object": { "basename": "BINaipcp00.pdf", "url": "https://authors.library.caltech.edu/records/hqg5f-a5008/files/BINaipcp00.pdf" }, "pub_year": "2000", "author_list": "Binns, W. R.; Wiedenbeck, M. E.; et el." }, { "id": "https://authors.library.caltech.edu/records/p1832-pxc69", "eprint_id": 27934, "eprint_status": "archive", "datestamp": "2023-08-19 06:18:36", "lastmod": "2024-01-13 05:48:30", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Barghouty-A-F", "name": { "family": "Barghouty", "given": "A. F." } }, { "id": "Jokipii-J-R", "name": { "family": "Jokipii", "given": "J. R." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "The Transition from Singly to Multiply-Charged Anomalous Cosmic Rays: Simulation and Interpretation of SAMPEX Observations", "ispublished": "unpub", "full_text_status": "public", "keywords": "primary cosmic rays, interstellar matter, positive ions, electric charge, impact ionisation, cosmic ray nuclei, cosmic ray energy spectra", "note": "\u00a9 2000 American Institute of Physics. Issue Date: 15 September 2000. Work is supported by NSF grant no. 9810653 and\nNASA-JOVE NAG8-1208 (A.F.B.) and by NASA grants\nNAS5-30704 and NAG5-6912 at Caltech.\n\nPublished - BARaipcp00b.pdf
", "abstract": "Multiply-charged anomalous cosmic rays (ACRs) can arise when singly-charged ACR ions are stripped of one or more of their electrons during their acceleration via, e.g., the process of diffusive shock-drift acceleration at the solar-wind termination shock. Recent measurements of the charge states of ACR neon, oxygen, and nitrogen by SAMPEX at 1 AU have shown that above \u2248 25 MeV/nucleon these ions are multiply charged. In addition, SAMPEX observations have also established that the transition from mostly singly-charged to mostly multiply-charged ACRs (defined as the 50% point) occurs at a total kinetic energy of \u2248 350 MeV. Preliminary simulations for ACR oxygen based on a theory of multiply-charged ACRs were able to show a transition energy at \u2248 300 MeV. However, the simulated intensity distribution among the various charge states was inconsistent with observations. This paper reexamines the predictions of the theory in light of new SAMPEX ACR observations and recently developed and refined estimates of hydrogen-impact ionization cross sections. Based on simulations for multi-species ACR ions, we find that the transition energy is only weakly dependent on characteristic transport parameters, and that the new ionization rates distribute the intensity among the charge states in a manner consistent with observations. The calculated transition energy is in excellent agreement with the measured value.", "date": "2000-09-15", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, N.Y.", "pagerange": "337-340", "id_number": "CaltechAUTHORS:20111123-075314857", "isbn": "1-56396-951-3", "book_title": "Acceleration and Transport of Energetic Particles Observed in the Heliosphere", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111123-075314857", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "9810653" }, { "agency": "NASA-JOVE", "grant_number": "NAG8-1208" }, { "agency": "NASA", "grant_number": "NAS5-30704" }, { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "2000-27", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." } }, { "id": "Jokipii-J-R", "name": { "family": "Jokipii", "given": "J. R." } }, { "id": "Lee-M-A", "name": { "family": "Lee", "given": "M. A." } }, { "id": "Mobius-E", "name": { "family": "Mobius", "given": "E." } }, { "id": "Zurbuchen-T-H", "name": { "family": "Zurbuchen", "given": "T. H." } } ] }, "doi": "10.1063/1.1324334", "primary_object": { "basename": "BARaipcp00b.pdf", "url": "https://authors.library.caltech.edu/records/p1832-pxc69/files/BARaipcp00b.pdf" }, "pub_year": "2000", "author_list": "Barghouty, A. F.; Jokipii, J. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/mhqg7-78214", "eprint_id": 55022, "eprint_status": "archive", "datestamp": "2023-08-19 06:19:51", "lastmod": "2024-01-13 16:15:50", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Yanasak-N", "name": { "family": "Yanasak", "given": "N." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Lijowski-M", "name": { "family": "Lijowski", "given": "M." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Abundances of the cosmic ray \u03b2-decay secondaries and implications for cosmic ray transport", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2000 American Institute of Physics.\n\nPublished online 15 September 2000.\n\nThis research was supported by the NASA at the California\nInstitute of Technology (under grant NAG5-6912),\nthe Jet Propulsion Laboratory, NASA/Goddard Space\nFlight Center, and Washington University.\n\nPublished - 2000-30.pdf
", "abstract": "Galactic cosmic rays (GCRs) pass through the interstellar medium (ISM) and undergo nuclear interactions that produce secondary fragments. The abundances of radioactive secondary species can be used to derive a galactic\nconfinement time for cosmic rays using the amount of ISM material traversed by the cosmic rays inferred from stable\nGCR secondary abundances. Abundance measurements of long-lived species such as ^(10)Be, ^(26)Al, ^(36)Cl, and ^(54)Mn allow\na comparison of propagation histories for different parent nuclei. Abundances for these species, measured in the energy\nrange ~ 50 - 500 MeV/nuc using the Cosmic Ray Isotope Spectrometer (CRIS) aboard the Advanced Composition\nExplorer (ACE) spacecraft, indicate a confinement time \u03c4(esc) 16.2\u00b10.8 Myr. We have modeled the production and\npropagation of the radioactive secondaries and discuss the implications for GCR transport.", "date": "2000-09-15", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "402-405", "id_number": "CaltechAUTHORS:20150219-134914101", "isbn": "1-56396-951-3", "book_title": "Acceleration and Transport of Energetic Particles Observed in the Heliosphere", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150219-134914101", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "2000-30", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." } }, { "id": "Jocipii-J-R", "name": { "family": "Jocipii", "given": "J. R." } }, { "id": "Lee-M-A", "name": { "family": "Lee", "given": "M. A." } }, { "id": "Moebius-E", "name": { "family": "Moebius", "given": "E." } }, { "id": "Zurbuchen-T-H", "name": { "family": "Zurbuchen", "given": "T. H." } } ] }, "doi": "10.1063/1.1324346", "primary_object": { "basename": "2000-30.pdf", "url": "https://authors.library.caltech.edu/records/mhqg7-78214/files/2000-30.pdf" }, "pub_year": "2000", "author_list": "Yanasak, N.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/kd7n0-gw612", "eprint_id": 28473, "eprint_status": "archive", "datestamp": "2023-08-19 06:19:17", "lastmod": "2024-01-13 05:50:06", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Measurements of Heavy Elements in ^3He-rich SEP Events", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar cosmic ray particles, cosmic ray composition, element relative abundance, isotope relative abundance, solar radiation, solar flares", "note": "\u00a9 2000 American Institute of Physics. Issue Date: 15 September 2000. This research was supported by NASA at the California\nInstitute of Technology (under grant NAG5-6912), the\nJet Propulsion Laboratory, and the Goddard Space Flight\nCenter. We thank the EPAM science team for providing\nthe electron data used in the first figure.\n\nPublished - SLOaipcp00.pdf
", "abstract": "Using the Solar Isotope Spectrometer (SIS) on the Advanced Composition Explorer (ACE), we have studied the properties of a selection of small ^3He-rich solar energetic particle (SEP) events with heavy ion enhancements in the energy range ~11\u201322 MeV/nucleon. These events contain significantly increased ^3He/^4He ratios over the solar wind value of 0.0004 in the energy range ~4.5\u20135.5 MeV/nucleon. In order to characterize the events, the following features have been investigated. First, the heavy element content has been measured and compared to that found in past studies of impulsive SEP events. Next, the simultaneous 38\u201353 keV electron flux, measured with the Electron, Proton, and Alpha Monitor (EPAM) on ACE, has been examined for possible activity near the ^3He-rich event onset times. Finally a list of measured solar X-ray flares, with corresponding H-alpha flares where possible, has been scrutinized for potential correlations with these events. The results show an apparent correlation between event onset and increased electron flux, and a possible association with X-ray flares.", "date": "2000-09-15", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, N.Y.", "pagerange": "103-106", "id_number": "CaltechAUTHORS:20111215-101637088", "isbn": "1-56396-951-3", "book_title": "Acceleration and Transport of Energetic Particles Observed in the Heliosphere", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111215-101637088", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA/Caltech", "grant_number": "NAG5-6912" }, { "agency": "JPL" }, { "agency": "Goddard Space Flight Center" } ] }, "other_numbering_system": { "items": [ { "id": "2000-20", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "Richard A." } } ] }, "doi": "10.1063/1.1324289", "primary_object": { "basename": "SLOaipcp00.pdf", "url": "https://authors.library.caltech.edu/records/kd7n0-gw612/files/SLOaipcp00.pdf" }, "pub_year": "2000", "author_list": "Slocum, P. L.; Wiedenbeck, M. E.; et el." }, { "id": "https://authors.library.caltech.edu/records/3pb2g-6ng48", "eprint_id": 28482, "eprint_status": "archive", "datestamp": "2023-08-19 06:19:22", "lastmod": "2024-01-13 05:50:11", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Enhanced Abundances of ^3He in Large Solar Energetic Particle Events", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar cosmic ray particles, cosmic ray composition, helium, isotope relative abundance, cosmic ray energy spectra, cosmic ray propagation, solar wind, acceleration", "note": "\u00a9 2000 American Institute of Physics. Issue Date: 15 September 2000. This research was supported by the National Aeronautics and Space Administration at the California Institute of Technology (under grant NAG5-6912), the Jet Propulsion Laboratory, and the Goddard Space Flight Center.\n\nPublished - WIEaipcp00b.pdf
", "abstract": "Observations of a number of relatively large solar energetic particle (SEP) events that have occurred since the launch of ACE in August 1997 have shown that the ratio of ^3He/^4He can be enhanced over the solar wind value (~4\u00d710^(\u20134)) by more than an order of magnitude in such events. Since particle acceleration in these \"gradual\" SEP events is thought to be caused by CME-driven shocks traveling through the solar corona and interplanetary medium, a source of ^3He in addition to the solar wind appears required to provide the seed material. Using data from the Solar Isotope Spectrometer on ACE, we have carried out a more detailed investigation of the characteristics of the ^3He enhancements at energies >5 MeV/nucleon in three large SEP events (4 Nov 1997, 6 May 1998, and 14 Nov 1998). We find that the ^3He/^4He ratios are essentially time-independent during the events, that the ^3He energy spectra are markedly harder than those commonly observed in impulsive events, and that the spectra of ^3He may be harder than those of ^4He.", "date": "2000-09-15", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, N.Y.", "pagerange": "107-110", "id_number": "CaltechAUTHORS:20111216-080137898", "isbn": "1-56396-951-3", "book_title": "Acceleration and Transport of Energetic Particles Observed in the Heliosphere", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111216-080137898", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA/Caltech", "grant_number": "NAG5-6912" }, { "agency": "JPL" }, { "agency": "Goddard Space Flight Center" } ] }, "other_numbering_system": { "items": [ { "id": "2000-21", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "Richard A." } }, { "id": "Jokipii-J-R", "name": { "family": "Jokipii", "given": "J. R." } }, { "id": "Lee-M-A", "name": { "family": "Lee", "given": "Martin A." } }, { "id": "Mobius-E", "name": { "family": "Mobius", "given": "Eberhard" } }, { "id": "Zurbuchen-T-H", "name": { "family": "Zurbuchen", "given": "T. H." } } ] }, "doi": "10.1063/1.1324290", "primary_object": { "basename": "WIEaipcp00b.pdf", "url": "https://authors.library.caltech.edu/records/3pb2g-6ng48/files/WIEaipcp00b.pdf" }, "pub_year": "2000", "author_list": "Wiedenbeck, M. E.; Christian, E. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/eb0jn-bxr08", "eprint_id": 55023, "eprint_status": "archive", "datestamp": "2023-08-19 06:19:56", "lastmod": "2024-01-13 16:15:52", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } } ] }, "title": "On the Low Energy Decrease in Galactic Cosmic Ray Secondary/Primary Ratios", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2000 American Institute of Physics.\n\nPublished online 15 September 2000.\n\nThis research supported by NASA at Caltech (grant\nNAG5-6912), JPL, NASA/OSFC, and Washington U.\n\nPublished - 2000-33.pdf
", "abstract": "Galactic cosmic ray (GCR) secondary/primary ratios such as B/C and (Sc+Ti+V)/Fe are commonly used to determine the mean amount of interstellar material through which cosmic rays travel before escaping from the Galaxy (\u039besc). These ratios are observed to be energy-dependent, with a relative maximum at \u223c1 GeV/nucleon, implying a corresponding peak in \u039besc. The decrease in \u039b_(esc) at energies above 1 GeV/nucleon is commonly taken to indicate that higher energy cosmic rays escape more easily from the Galaxy. The decrease in \u039b_(esc) at energies <1 GeV/nuc is more controversial; suggested possibilities include the effects of a galactic wind or the effects of distributed acceleration of cosmic rays as they pass through the interstellar medium. We consider two possible explanations for the low energy decrease in \u039b_(esc) and attempt to fit the combined, high-resolution measurements of secondary/primary ratios from \u223c0.1 to 35 GeV/nuc made with the CRIS instrument on ACE and the C2 experiment on HEAO-3. The first possibility, which hypothesizes an additional, local component of low-energy cosmic rays that has passed through very little material, is found to have difficulty simultaneously accounting for the abundance of both B and the Fe-secondaries. The second possibility, suggested by Soutoul and Ptuskin, involves a new form for \u039b_(esc) motivated by their diffusion-convection model of cosmic rays in the Galaxy. Their suggested form for \u039b_(esc)(E) is found to provide an excellent fit to the combined ACE and HEAO data sets.", "date": "2000-09-15", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, N.Y.", "pagerange": "421-428", "id_number": "CaltechAUTHORS:20150219-135833866", "isbn": "1-56396-951-3", "book_title": "Acceleration and Transport of Energetic Particles Observed in the Heliosphere", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150219-135833866", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "2000-33", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." } }, { "id": "Miller-M", "name": { "family": "Miller", "given": "Marjorie" } }, { "id": "Jokipii-J-R", "name": { "family": "Jokipii", "given": "J. R." } }, { "id": "Lee-M-A", "name": { "family": "Lee", "given": "Martin A." } }, { "id": "Zurbuchen-T-H", "name": { "family": "Zurbuchen", "given": "T. H." } }, { "id": "M\u00f6bius-E", "name": { "family": "M\u00f6bius", "given": "E." } } ] }, "doi": "10.1063/1.1324351", "primary_object": { "basename": "2000-33.pdf", "url": "https://authors.library.caltech.edu/records/eb0jn-bxr08/files/2000-33.pdf" }, "pub_year": "2000", "author_list": "Davis, A. J.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/3rzqg-4ak90", "eprint_id": 55029, "eprint_status": "archive", "datestamp": "2023-08-19 06:20:01", "lastmod": "2024-01-13 16:15:54", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "deNolfo-G-A", "name": { "family": "deNolfo", "given": "G. A." } }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "Golden-R-L", "name": { "family": "Golden", "given": "R. L." } }, { "id": "Hof-M", "name": { "family": "Hof", "given": "M." }, "orcid": "0000-0003-2884-3037" }, { "id": "Krombel-K-E", "name": { "family": "Krombel", "given": "K. E." } }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Menn-W", "name": { "family": "Menn", "given": "W." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Ormes-J-F", "name": { "family": "Ormes", "given": "J. F." } }, { "id": "Rasmussen-I-L", "name": { "family": "Rasmussen", "given": "I. L." } }, { "id": "Reimer-O", "name": { "family": "Reimer", "given": "O." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Simon-M", "name": { "family": "Simon", "given": "M." } }, { "id": "Stochaj-S-J", "name": { "family": "Stochaj", "given": "S. J." } }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "A Measurement of Cosmic Ray Deuterium from 0.5-2.9 GeV/nucleon", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2000 American Institute of Physics.\n\nPublished online 15 September 2000.\n\nThe IMAX project was supported in the United States by NASA under NAGS-5227 (Caltech) and under RTOP 353-87-02 (GSFC) and grants NAGW-1418 (NMSU/BBMF) and in Germany by the Deutsche\nForschungsgemeinschaft (DFG) and the Bundesministerium f\u00fcr Bildung und Forschung, Wissenschaft, Forschung und Techologie (BMBF).\n\nPublished - 2000-34.pdf
", "abstract": "The rare isotopes ^2H and ^3He in cosmic rays are believed to originate mainly from the interaction of high energy protons and helium with the galactic interstellar medium. The unique propagation history of these rare isotopes provides important constraints on galactic cosmic ray source spectra and on models for their propagation within the Galaxy. Hydrogen and helium isotopes were measured with the balloon-borne experiment, IMAX, which flew from Lynn Lake, Manitoba in 1992. The energy spectrum of deuterium between 0.5 and 3.2 GeV/nucleon measured by the IMAX experiment as well as previously published results of ^3He from the same instrument will be compared with predictions of cosmic ray galactic propagation models. The observed composition of the light isotopes is found to be generally consistent with the predictions of the standard Leaky Box Model derived to fit observations of heavier nuclei.", "date": "2000-09-15", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, N.Y.", "pagerange": "425-428", "id_number": "CaltechAUTHORS:20150219-144814570", "isbn": "1-56396-951-3", "book_title": "Acceleration and Transport of Energetic Particles Observed in the Heliosphere", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150219-144814570", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-5227" }, { "agency": "NASA", "grant_number": "RTOP 353-87-02" }, { "agency": "NASA", "grant_number": "NAGW-1418" }, { "agency": "Deutsche Forschungsgemeinschaft (DFG)" }, { "agency": "Bundesministerium f\u00fcr Bildung und Forschung (Germany)" } ] }, "other_numbering_system": { "items": [ { "id": "2000-34", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." } }, { "id": "Miller-M", "name": { "family": "Miller", "given": "Marjorie" } }, { "id": "Jokipii-J-R", "name": { "family": "Jokipii", "given": "J. R." } }, { "id": "Lee-M-A", "name": { "family": "Lee", "given": "Martin A." } }, { "id": "Zurbuchen-T-H", "name": { "family": "Zurbuchen", "given": "T. H." } }, { "id": "M\u00f6bius-E", "name": { "family": "M\u00f6bius", "given": "E." } } ] }, "doi": "10.1063/1.1324352", "primary_object": { "basename": "2000-34.pdf", "url": "https://authors.library.caltech.edu/records/3rzqg-4ak90/files/2000-34.pdf" }, "pub_year": "2000", "author_list": "deNolfo, G. A.; Barbier, L. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/nzqcw-g9z69", "eprint_id": 27956, "eprint_status": "archive", "datestamp": "2023-08-19 06:18:56", "lastmod": "2024-01-13 05:48:55", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } } ] }, "title": "On the Low Energy Decrease in Galactic Cosmic Ray\n Secondary/Primary Ratios", "ispublished": "unpub", "full_text_status": "public", "keywords": "galactic cosmic rays, cosmic ray composition, element relative abundance, transport processes, interstellar matter, cosmic ray propagation, cosmic ray energy spectra", "note": "\u00a9 2000 American Institute of Physics. Issue Date: 15 September 2000. This research supported by NASA at Caltech (grant NAG5-6912), JPL, NASA/GSFC, and Washington U.\n\nPublished - DAVaipcp00.pdf
", "abstract": "Galactic cosmic ray (GCR) secondary/primary ratios such as B/C and (Sc+Ti+V)/Fe are commonly used to determine the mean amount of interstellar material through which cosmic rays travel before escaping from the Galaxy (\u039b_(esc)). These ratios are observed to be energy-dependent, with a relative maximum at ~1 GeV/nucleon, implying a corresponding peak in \u039b_(esc). The decrease in \u039b_(esc) at energies above 1 GeV/nucleon is commonly taken to indicate that higher energy cosmic rays escape more easily from the Galaxy. The decrease in \u039b_(esc) at energies <1 GeV/nuc is more controversial; suggested possibilities include the effects of a galactic wind or the effects of distributed acceleration of cosmic rays as they pass through the interstellar medium. We consider two possible explanations for the low energy decrease in \u039b_(esc) and attempt to fit the combined, high-resolution measurements of secondary/primary ratios from ~0.1 to 35 GeV/nuc made with the CRIS instrument on ACE and the C2 experiment on HEAO-3. The first possibility, which hypothesizes an additional, local component of low-energy cosmic rays that has passed through very little material, is found to have difficulty simultaneously accounting for the abundance of both B and the Fe-secondaries. The second possibility, suggested by Soutoul and Ptuskin, involves a new form for \u039b_(esc) motivated by their diffusion-convection model of cosmic rays in the Galaxy. Their suggested form for \u039b_(esc)(E) is found to provide an excellent fit to the combined ACE and HEAO data sets.", "date": "2000-09-15", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, N.Y.", "pagerange": "421-424", "id_number": "CaltechAUTHORS:20111123-142326519", "isbn": "1-56396-951-3", "book_title": "Acceleration and Transport of Energetic Particles Observed in the Heliosphere", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111123-142326519", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" }, { "agency": "JPL" }, { "agency": "NASA/GSFC" }, { "agency": "Washington University" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." } }, { "id": "Jokipii-J-R", "name": { "family": "Jokipii", "given": "J. R." } }, { "id": "Lee-M-A", "name": { "family": "Lee", "given": "M. A." } }, { "id": "M\u00f6bius-E", "name": { "family": "M\u00f6bius", "given": "E." } }, { "id": "Zurbuchen-T-H", "name": { "family": "Zurbuchen", "given": "T. H." } } ] }, "doi": "10.1063/1.1324351", "primary_object": { "basename": "DAVaipcp00.pdf", "url": "https://authors.library.caltech.edu/records/nzqcw-g9z69/files/DAVaipcp00.pdf" }, "pub_year": "2000", "author_list": "Davis, A. J.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/qh8qt-etk47", "eprint_id": 27952, "eprint_status": "archive", "datestamp": "2023-08-19 06:18:51", "lastmod": "2024-01-13 05:48:51", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "The Isotopic Composition of Solar Energetic Particles", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar cosmic ray particles, cosmic ray composition, isotope relative abundance, element relative abundance, cosmic ray propagation, transport processes, acceleration", "note": "\u00a9 2000 American Institute of Physics. Issue Date: 15 September 2000. This work was supported by NASA at the\nCalifornia Institute of Technology (under grant NAS5-\n6912), the Jet Propulsion Laboratory, and the Goddard\nSpace Flight Center. Climax neutron monitor data\nwere obtained from the University of Chicago,\nNational Science Foundation grant ATM-9613963.\n\nPublished - COHaipcp00.pdf
", "abstract": "Since the launch of ACE in August 1997, the Solar Isotope Spectrometer (SIS) has observed 11 large solar particle events in which elemental and isotopic composition was determined over a large energy range. The composition of these events has raised many issues and challenged generally accepted characterizations of solar energetic particle (SEP) events. In particular, ^3He/^4He enhancements have been observed in several large events as well as enhancements of heavy ions typically associated with smaller impulsive events. The isotopic composition varies substantially from event to event (a factor of 3 for ^(22)Ne/^(20)Ne) with enhancements and depletions that are generally correlated with elemental composition. This correlation suggests that the isotopic enhancements may be related to the Q/M fractionation typically evident in the elemental composition of SEP events. However, there are also significant deviations from this pattern, which may imply that wave-particle resonances or other mass fractionation processes may be involved. We review the recent isotopic observations made with ACE and discuss their implications for particle acceleration and transport.", "date": "2000-09-15", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, N.Y.", "pagerange": "55-62", "id_number": "CaltechAUTHORS:20111123-124917397", "isbn": "1-56396-951-3", "book_title": "Acceleration and Transport of Energetic Particles Observed in the Heliosphere", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111123-124917397", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA/Caltech", "grant_number": "NAS5-6912" }, { "agency": "JPL" }, { "agency": "Goddard Space Flight Center" }, { "agency": "NSF", "grant_number": "ATM-9613963" } ] }, "other_numbering_system": { "items": [ { "id": "2000-18", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "Richard A." } } ] }, "doi": "10.1063/1.1324281", "primary_object": { "basename": "COHaipcp00.pdf", "url": "https://authors.library.caltech.edu/records/qh8qt-etk47/files/COHaipcp00.pdf" }, "pub_year": "2000", "author_list": "Cohen, C. M. S.; Leske, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/k92wv-wwv91", "eprint_id": 27935, "eprint_status": "archive", "datestamp": "2023-08-19 06:18:41", "lastmod": "2024-01-13 05:48:32", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Barghouty-A-F", "name": { "family": "Barghouty", "given": "A. F." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "Simulation of Charge-Equilibration and Acceleration of Solar\n Energetic Ions", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar cosmic ray particles, positive ions, electric charge, acceleration, shock wave effects, cosmic ray propagation, solar radiation, astrophysical plasma, plasma temperature, ion density", "note": "\u00a9 2000 American Institute of Physics. Issue Date: 15 September 2000. Work is supported by NSF grant 9810653 and NASA-JOVE NAG8-1208 and by NASA grants NAS5-30704\nand NAG5-6912 at Caltech. A.F.B. thanks Prof. M.\nYoshimori for stimulating discussions and Dr. Christina\nCohen for valuable help with SOHO and ACE data.\n\nPublished - BARaipcp00c.pdf
", "abstract": "Recent measurements of the mean ionic charge states of solar energetic iron and silicon by SAMPEX and ACE during the large solar events of 1992 November 1 and 1997 November 6 show a mean ionic charge that increases with energy. This feature has implications for the use of the observed charge state as a probe of the coronal electron temperature and density, as well as for models of ion acceleration and transport in the coronal plasma. In this paper, we show results of a nonequilibrium model for the mean ionic charge that includes shock-induced acceleration in addition to charge-changing processes. The model is able to reproduce the general features observed without, however, specifying uniquely the acceleration time and the plasma electron density. Based on our simulations for iron and silicon for the 1992 and 1997 events, and assuming a characteristic shock-acceleration time of ~10 sec, our model suggests an equilibration-acceleration site at heights ~1 solar radius above the solar surface, a density ~10^9 cm^(\u20133), and an electron temperature ~1\u20131.33 MK. For ions with kinetic energy \u2273 30 MeV/nucleon we estimate the amount of coronal material the ions traverse to be ~100 \u00b5g/cm^2.", "date": "2000-09-15", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, N.Y.", "pagerange": "71-78", "id_number": "CaltechAUTHORS:20111123-080938173", "isbn": "1-56396-951-3", "book_title": "Acceleration and Transport of Energetic Particles Observed in the Heliosphere", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111123-080938173", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "9810653" }, { "agency": "NASA-JOVE", "grant_number": "NAG8-1208" }, { "agency": "NASA", "grant_number": "NAS5-30704" }, { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." } }, { "id": "Jokipii-J-R", "name": { "family": "Jokipii", "given": "J. R." } }, { "id": "Lee-M-A", "name": { "family": "Lee", "given": "M. A." } }, { "id": "Mobius-E", "name": { "family": "Mobius", "given": "E." } }, { "id": "Zurbuchen-T-H", "name": { "family": "Zurbuchen", "given": "T. H." } } ] }, "doi": "10.1063/1.1324283", "primary_object": { "basename": "BARaipcp00c.pdf", "url": "https://authors.library.caltech.edu/records/k92wv-wwv91/files/BARaipcp00c.pdf" }, "pub_year": "2000", "author_list": "Barghouty, A. F. and Mewaldt, R. A." }, { "id": "https://authors.library.caltech.edu/records/zghem-kq516", "eprint_id": 55017, "eprint_status": "archive", "datestamp": "2023-08-19 06:19:46", "lastmod": "2024-01-13 16:15:48", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Niebur-S-M", "name": { "family": "Niebur", "given": "S. M." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Lijowski-M", "name": { "family": "Lijowski", "given": "M." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } } ] }, "title": "Secondary Electron-Capture-Decay Isotopes and Implications for the Propagation of Galactic Cosmic rays", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2000 American Institute of Physics.\n\nPublished online 15 September 2000.\n\nThis research was supported by the National Aeronautics and Space Administration at the California Institute of Technology (under grant NAG5-6912), the Goddard Space Flight Center, the Jet Propulsion Laboratory, and Washington University.\n\nPublished - 2000-31.pdf
", "abstract": "We report the first observation of an energy dependence in the titanium, vanadium, and chromium isotopic abundances in cosmic rays. The observations were made in the 100\u2013500 MeV/nucleon energy interval using data from the Cosmic Ray Isotope Spectrometer on the ACE spacecraft. The ^(51)Cr and ^(49)V isotopes in cosmic rays are produced by fragmentation of heavier cosmic ray nuclides and decay only by electron capture. The observations indicate that electron-capture decay occurred primarily at the lower energies measured, and that there is a resulting energy dependence in the abundances of these isotopes and their decay products.", "date": "2000-09-15", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, N.Y.", "pagerange": "406-409", "id_number": "CaltechAUTHORS:20150219-131410930", "isbn": "1-56396-951-3", "book_title": "Acceleration and Transport of Energetic Particles Observed in the Heliosphere", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150219-131410930", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "2000-31", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." } }, { "id": "Miller-M", "name": { "family": "Miller", "given": "Marjorie" } }, { "id": "Jokipii-J-R", "name": { "family": "Jokipii", "given": "J. R." } }, { "id": "Lee-M-A", "name": { "family": "Lee", "given": "Martin A." } }, { "id": "Zurbuchen-T-H", "name": { "family": "Zurbuchen", "given": "T. H." } }, { "id": "M\u00f6bius-E", "name": { "family": "M\u00f6bius", "given": "E." } } ] }, "doi": "10.1063/1.1324347", "primary_object": { "basename": "2000-31.pdf", "url": "https://authors.library.caltech.edu/records/zghem-kq516/files/2000-31.pdf" }, "pub_year": "2000", "author_list": "Niebur, S. M.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/tnmxh-ehz56", "eprint_id": 28370, "eprint_status": "archive", "datestamp": "2023-08-19 06:19:02", "lastmod": "2024-01-13 05:49:45", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Observations of Anomalous Cosmic Rays at 1 AU", "ispublished": "unpub", "full_text_status": "public", "keywords": "primary cosmic rays, interstellar matter, cosmic ray origin, cosmic ray variations, solar activity, cosmic ray composition, element relative abundance, isotope relative abundance, cosmic ray energy spectra, transport processes, acceleration", "note": "\u00a9 2000 American Institute of Physics. Issue Date: 15 September 2000. This research was supported by NASA at the California\nInstitute of Technology (under grant NAG5-6912), the\nJet Propulsion Laboratory, and the Goddard Space Flight\nCenter. We thank R. S. Selesnick, N. E. Yanasak, and\nB. Klecker for providing data used in some of the figures.\nClimax neutron monitor data were obtained from\nthe web, courtesy of the University of Chicago, National\nScience Foundation grant ATM-9613963.\n\nPublished - LESaipcp00b.pdf
", "abstract": "Anomalous cosmic rays (ACRs) provide a sensitive probe of the access of energetic particles to the inner heliosphere, varying in intensity by more than two orders of magnitude during the course of the solar cycle. New data which are becoming available from the Advanced Composition Explorer (ACE) can provide a detailed record of ACR intensity and spectral changes on short (~ 1 day) time scales during the approach to solar maximum, which will help address issues of ACR modulation and transport. The elemental and isotopic composition of ACRs provides important information on the source or sources of these particles, while their ionic charge state composition and its energy dependence\nserves as a diagnostic of their acceleration time scale. We review measurements of the ACR elemental, isotopic,\nand charge state composition and spectra as determined at 1 AU by SAMPEX, ACE, Wind, and other spacecraft. These\nresults are important input to models of the acceleration, modulation, and transport of ACRs.", "date": "2000-09-15", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, N.Y.", "pagerange": "293-300", "id_number": "CaltechAUTHORS:20111208-100352581", "isbn": "1-56396-951-3", "book_title": "Acceleration and Transport of Energetic Particles Observed in the Heliosphere", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111208-100352581", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" }, { "agency": "JPL" }, { "agency": "Goddard Space Flight Center" }, { "agency": "NSF", "grant_number": "ATM-9613963" } ] }, "other_numbering_system": { "items": [ { "id": "2000-25", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." } }, { "id": "Jokipii-J-R", "name": { "family": "Jokipii", "given": "J. R." } }, { "id": "Lee-M-A", "name": { "family": "Lee", "given": "M. A." } }, { "id": "Mobius-E", "name": { "family": "Mobius", "given": "E." } }, { "id": "Zurbuchen-T-H", "name": { "family": "Zurbuchen", "given": "T. H." } } ] }, "doi": "10.1063/1.1324328", "primary_object": { "basename": "LESaipcp00b.pdf", "url": "https://authors.library.caltech.edu/records/tnmxh-ehz56/files/LESaipcp00b.pdf" }, "pub_year": "2000", "author_list": "Leske, R. A.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/h5tg9-wvt05", "eprint_id": 28380, "eprint_status": "archive", "datestamp": "2023-08-19 06:19:08", "lastmod": "2024-01-13 05:49:53", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Variable fractionation of solar energetic particles according to first ionization potential", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar cosmic ray particles, cosmic ray composition, element relative abundance, ionisation potential, electric charge, solar wind", "note": "\u00a9 2000 American Institute of Physics. Issue Date: 15 September 2000. This work was supported by NASA at the\nCalifornia Institute of Technology (under grant NAS5-\n6912), the Jet Propulsion Laboratory, and Goddard\nSpace Flight Center.\n\nPublished - MEWaipcp00b.pdf
", "abstract": "The average composition of solar energetic particles (SEPs), like the solar corona, is known to be depleted in elements with first ionization potential (FIP) more than ~10 eV by a factor of approximately four. We examine evidence for event to event variations in the FIP-related fractionation of SEPs, following up a 1994 study by Garrard and Stone. In a survey of 46 SEP events from 1974 to 1999 the deduced FIP-fractionation varies by a factor of ~2 from event to event, with no apparent relation to charge-to-mass dependent fractionation patterns in these same events. These results are compared to similar variations observed in the solar wind.", "date": "2000-09-15", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, N.Y.", "pagerange": "123-126", "id_number": "CaltechAUTHORS:20111209-071511880", "isbn": "1-56396-951-3", "book_title": "Acceleration and Transport of Energetic Particles Observed in the Heliosphere", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111209-071511880", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-6912" }, { "agency": "Goddard Space Flight Center" }, { "agency": "JPL" } ] }, "other_numbering_system": { "items": [ { "id": "2000-23", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." } }, { "id": "Miller-M", "name": { "family": "Miller", "given": "M." } }, { "id": "Jokipii-J-R", "name": { "family": "Jokipii", "given": "J. R." } }, { "id": "Lee-M-A", "name": { "family": "Lee", "given": "Martin A." } }, { "id": "Zurbuchen-T-H", "name": { "family": "Zurbuchen", "given": "Thomas H." } }, { "id": "Mobius-E", "name": { "family": "Mobius", "given": "Eberhard" } } ] }, "doi": "10.1063/1.1324294", "primary_object": { "basename": "MEWaipcp00b.pdf", "url": "https://authors.library.caltech.edu/records/h5tg9-wvt05/files/MEWaipcp00b.pdf" }, "pub_year": "2000", "author_list": "Mewaldt, R. A.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/x5095-04w06", "eprint_id": 28378, "eprint_status": "archive", "datestamp": "2023-08-21 21:35:29", "lastmod": "2024-01-13 05:49:51", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Steenberg-C-D", "name": { "family": "Steenberg", "given": "C. D." } } ] }, "title": "The morphology of anomalous cosmic rays in the outer heliosphere", "ispublished": "unpub", "full_text_status": "public", "keywords": "primary cosmic rays; interstellar matter; solar wind; solar system; cosmic ray variations; transport processes; shock waves; cosmic ray composition; element relative abundance; cosmic ray energy spectra, cosmic ray propagation, acceleration; scaling phenomena", "note": "\u00a9 2000 American Institute of Physics.\n\nIssue Date: 15 September 2000.\n\nThis work was supported by NASA at Caltech (contract\nNAS7-918).\n\nPublished - STEaipcp00.pdf
", "abstract": "The well established cosmic ray transport equation describes the physics of cosmic ray modulation in the heliosphere and is thought to be complete. Its solution for anomalous cosmic rays has special characteristics due to the local acceleration of these particles at the solar wind termination shock. Some of these characteristics are demonstrated here, namely effects by the strength of the shock, shock drift, the cutoff in the spectrum at the shock, species scaling, drift, and ionization.", "date": "2000-09-15", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, New York", "pagerange": "301-308", "id_number": "CaltechAUTHORS:20111208-164736889", "isbn": "1-56396-951-3", "book_title": "Acceleration and Transport of Energetic Particle Observed in the Heliosphere: ACE 2000 Symposium", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111208-164736889", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-918" } ] }, "other_numbering_system": { "items": [ { "id": "2000-26", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "Richard A." } }, { "id": "Miller-M", "name": { "family": "Miller", "given": "Marjorie" } }, { "id": "Jokipii-J-R", "name": { "family": "Jokipii", "given": "J. R." } }, { "id": "Lee-M-A", "name": { "family": "Lee", "given": "Martin A." } }, { "id": "Zurbuchen-T-H", "name": { "family": "Zurbuchen", "given": "Thomas H." } }, { "id": "Mobius-E", "name": { "family": "Mobius", "given": "Eberhard" } } ] }, "doi": "10.1063/1.1324329", "primary_object": { "basename": "STEaipcp00.pdf", "url": "https://authors.library.caltech.edu/records/x5095-04w06/files/STEaipcp00.pdf" }, "pub_year": "2000", "author_list": "Steenberg, C. D." }, { "id": "https://authors.library.caltech.edu/records/432n3-p3436", "eprint_id": 28272, "eprint_status": "archive", "datestamp": "2023-08-21 21:35:24", "lastmod": "2024-01-13 05:49:31", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Lijowski-M", "name": { "family": "Lijowski", "given": "M." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } } ] }, "title": "Constraints on cosmic-ray acceleration and transport from isotope observations", "ispublished": "unpub", "full_text_status": "public", "keywords": "galactic cosmic rays; cosmic ray propagation; transport processes; acceleration; cosmic ray composition; isotope relative abundance; cosmic ray energy spectra; high-energy cosmic ray interactions, nucleosynthesis, nuclear electron capture; solar system; interstellar matter; supernovae", "note": "\u00a9 2000 American Institute of Physics.\n\nIssue Date: 15 September 2000.\n\nThis research was supported by the National Aeronautics\nand Space Administration at the California Institute\nof Technology (under grant NAG5-6912), the Jet Propulsion\nLaboratory, the Goddard Space Flight Center, and\nWashington University.\n\nPublished - WIEaipcp00a.pdf
", "abstract": "Observations from the Cosmic Ray Isotope Spectrometer (CRIS) on ACE have been used to derive constraints on the locations, physical conditions, and time scales for cosmic-ray acceleration and transport. The isotopic composition of Fe, Co, and Ni is very similar to that of solar system material, indicating that cosmic rays contain contributions from supernovae of both Type II and Type Ia. The electron-capture primary ^(59)Ni produced in supernovae has decayed, demonstrating that a time \u227310^5 yr elapses before acceleration of the bulk of the cosmic rays and showing that most of the accelerated material is derived from old stellar or interstellar material rather than from fresh supernova ejecta.", "date": "2000-09-15", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, New York", "pagerange": "363-370", "id_number": "CaltechAUTHORS:20111201-093810051", "isbn": "1-56396-951-3", "book_title": "Acceleration and Transport of Energetic Particles Observed in the Heliosphere", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111201-093810051", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" }, { "agency": "JPL" }, { "agency": "Goddard Space Flight Center" }, { "agency": "Washington University" } ] }, "other_numbering_system": { "items": [ { "id": "2000-29", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "Richard A." } }, { "id": "Miller-M", "name": { "family": "Miller", "given": "Marjorie" } }, { "id": "Jokipii-J-R", "name": { "family": "Jokipii", "given": "J. R." } }, { "id": "Lee-M-A", "name": { "family": "Lee", "given": "Martin A." } }, { "id": "Zurbuchen-T-H", "name": { "family": "Zurbuchen", "given": "Thomas H." } }, { "id": "Mobius-E", "name": { "family": "Mobius", "given": "Eberhard" } } ] }, "doi": "10.1063/1.1324340", "primary_object": { "basename": "WIEaipcp00a.pdf", "url": "https://authors.library.caltech.edu/records/432n3-p3436/files/WIEaipcp00a.pdf" }, "pub_year": "2000", "author_list": "Wiedenbeck, M. E.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/3w2b5-rha10", "eprint_id": 27997, "eprint_status": "archive", "datestamp": "2023-08-21 21:35:14", "lastmod": "2024-01-13 05:49:01", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "Golden-R-L", "name": { "family": "Golden", "given": "R. L." } }, { "id": "Hof-M", "name": { "family": "Hof", "given": "M." }, "orcid": "0000-0003-2884-3037" }, { "id": "Krombel-K-E", "name": { "family": "Krombel", "given": "K. E." } }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Menn-W", "name": { "family": "Menn", "given": "W." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Ormes-J-F", "name": { "family": "Ormes", "given": "J. F." } }, { "id": "Rasmussen-I-L", "name": { "family": "Rasmussen", "given": "I. L." } }, { "id": "Reimer-O", "name": { "family": "Reimer", "given": "O." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Simons-M", "name": { "family": "Simons", "given": "M." }, "orcid": "0000-0003-1412-6395" }, { "id": "Stochaj-S-J", "name": { "family": "Stochaj", "given": "S. J." } }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "A measurement of cosmic ray deuterium from 0.5\u20132.9 \n GeV/nucleon", "ispublished": "unpub", "full_text_status": "public", "keywords": "galactic cosmic rays; cosmic ray propagation; high-energy cosmic ray interactions; interstellar matter; cosmic ray protons; cosmic ray nuclei; isotope relative abundance; deuterium; cosmic ray energy spectra", "note": "\u00a9 2000 American Institute of Physics.\n\nIssue Date: 15 September 2000.\n\nThe IMAX project was supported in the United States by NASA under NAG5-5227 (Caltech) and under RTOP 353-87-02 (GSFC) and grants NAGW-1418 (NMSU/BBMF) and in Germany by the Deutsche Forschungsgemeinschaft (DFG) and the Bundesministerium f\u00fcr Bildung, Wissenschaft, Forschung und\nTechologie(BMBF).\n\nPublished - NOLaipcp00.pdf
", "abstract": "The rare isotopes ^(2)H and ^(3)He in cosmic rays are believed to originate mainly from the interaction of high energy protons and helium with the galactic interstellar medium. The unique propagation history of these rare isotopes provides important constraints on galactic cosmic ray source spectra and on models for their propagation within the Galaxy. Hydrogen and helium isotopes were measured with the balloon-borne experiment, IMAX, which flew from Lynn Lake, Manitoba in 1992. The energy spectrum of deuterium between 0.5 and 3.2 GeV/nucleon measured by the IMAX experiment as well as previously published results of ^(3)He from the same instrument will be compared with predictions of cosmic ray galactic propagation models. The observed composition of the light isotopes is found to be generally consistent with the predictions of the standard Leaky Box Model derived to fit observations of heavier nuclei", "date": "2000-09-15", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "425-428", "id_number": "CaltechAUTHORS:20111129-121047611", "isbn": "1-56396-951-3", "book_title": "Acceleration and Transport of Energetic Particles Observed in the Heliosphere", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111129-121047611", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-5227" }, { "agency": "NASA", "grant_number": "RTOP 353-87-02" }, { "agency": "NASA", "grant_number": "NAGW-1418" }, { "agency": "Deutsche Forschungsgemeinschaft (DFG)" }, { "agency": "Bundesministerium f\u00fcr Bildung, Wissenschaft, Forschung und Technologie (BMBF)" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" }, { "id": "Division-of-Geological-and-Planetary-Sciences" } ] }, "contributors": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "Richard A." } }, { "id": "Miller-M", "name": { "family": "Miller", "given": "Marjorie" } }, { "id": "Jokipii-J-R", "name": { "family": "Jokipii", "given": "J. R." } }, { "id": "Lee-M-A", "name": { "family": "Lee", "given": "Martin A." } }, { "id": "Zurbuchen-T-H", "name": { "family": "Zurbuchen", "given": "Thomas H." } }, { "id": "M\u00f6bius-E", "name": { "family": "M\u00f6bius", "given": "Eberhard" } } ] }, "doi": "10.1063/1.1324352", "primary_object": { "basename": "NOLaipcp00.pdf", "url": "https://authors.library.caltech.edu/records/3w2b5-rha10/files/NOLaipcp00.pdf" }, "pub_year": "2000", "author_list": "de Nolfo, G. A.; Barbier, L. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/0sgrs-ygf53", "eprint_id": 28270, "eprint_status": "archive", "datestamp": "2023-08-21 21:35:19", "lastmod": "2024-01-13 05:49:29", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mazur-J-E", "name": { "family": "Mazur", "given": "J. E." } }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Dwyer-J-R", "name": { "family": "Dwyer", "given": "J. R." } }, { "id": "Giacalone-J", "name": { "family": "Giacalone", "given": "J." } }, { "id": "Jokipii-J-R", "name": { "family": "Jokipii", "given": "J. R." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "The mixing of interplanetary magnetic field lines: A significant transport effect in studies of the energy spectra of impulsive flares", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar radiation; solar flares; solar wind; astrophysical plasma; solar cosmic ray particles; cosmic ray propagation; transport processes; interplanetary magnetic fields; magnetic field effects; magnetic flux", "note": "\u00a9 2000 American Institute of Physics.\n\nIssue Date: 15 September 2000.\n\nWe thank the many members of the ACE instrument teams who have contributed to the success of the ACE mission, and acknowledge the special efforts of R. E. Gold and S. M. Krimigis. We thank C. Smith and the ACE/MAG team for the ACE magnetic field measurements reported here, and D. McComas, R. Skoug, and the ACE/SWEPAM team for solar wind\nmeasurements used in the analysis. Contract number\nQ295801 between the University of Maryland and The Aerospace Corporation supported this work.\n\nPublished - MAZaipcp00.pdf
", "abstract": "Using instrumentation on board the ACE spacecraft we describe short-time scale (~3 hour) variations observed in the arrival profiles of ~20 keV nucleon^(\u20131) to ~2 MeV nucleon^(\u20131) ions from impulsive solar flares. These variations occurred simultaneously across all energies and were generally not in coincidence with any local magnetic field or plasma signature. These features appear to be caused by the convection of magnetic flux tubes past the observer that are alternately filled and devoid of flare ions even though they had a common flare source at the Sun. In these particle events we therefore have a means to observe and measure the mixing of the interplanetary magnetic field due to random walk. In a survey of 25 impulsive flares observed at ACE between 1997 November and 1999 July these features had an average time scale of 3.2 hours, corresponding to a length of ~0.03 AU. The changing magnetic connection to the flare site sometimes lead to an incomplete observation of a flare at 1 AU; thus the field-line mixing is an important effect in studies of impulsive flare energy spectra.", "date": "2000-09-15", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, New York", "pagerange": "47-54", "id_number": "CaltechAUTHORS:20111201-093719145", "isbn": "1-56396-951-3", "book_title": "Acceleration and Transport of Energetic Particles Observed in the Heliosphere", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111201-093719145", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "University of Maryland", "grant_number": "Q295801" }, { "agency": "Aerospace Corporation", "grant_number": "Q295801" } ] }, "other_numbering_system": { "items": [ { "id": "2000-17", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "Richard A." } }, { "id": "Miller-M", "name": { "family": "Miller", "given": "Marjorie" } }, { "id": "Jokipii-J-R", "name": { "family": "Jokipii", "given": "J. R." } }, { "id": "Lee-M-A", "name": { "family": "Lee", "given": "Martin A." } }, { "id": "Zurbuchen-T-H", "name": { "family": "Zurbuchen", "given": "Thomas H." } }, { "id": "Mobius-E", "name": { "family": "Mobius", "given": "Eberhard" } } ] }, "doi": "10.1063/1.1324280", "primary_object": { "basename": "MAZaipcp00.pdf", "url": "https://authors.library.caltech.edu/records/0sgrs-ygf53/files/MAZaipcp00.pdf" }, "pub_year": "2000", "author_list": "Mazur, J. E.; Mason, G. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/cvz0y-fxz43", "eprint_id": 9771, "eprint_status": "archive", "datestamp": "2023-08-21 21:35:04", "lastmod": "2024-01-12 23:29:55", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Sposato-S-H", "name": { "family": "Sposato", "given": "S. H." } }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "deNolfo-G-A", "name": { "family": "deNolfo", "given": "G. A." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } } ] }, "title": "Co/Ni element ratio in the galactic cosmic rays between 0.8 and 4.3 GeV/nucleon", "ispublished": "unpub", "full_text_status": "public", "keywords": "galactic cosmic rays, cosmic ray composition, element relative abundance, high-energy cosmic ray interactions, nucleosynthesis, nuclear electron capture, cosmic ray energy spectra", "note": "\u00a92000 American Institute of Physics. \n\nIssue Date: September 15, 2000. \n\nThis work was supported in part by NASA under grant NAG5-5110.", "abstract": "In a one-day balloon flight of the Trans-Iron Galactic Element Recorder (TIGER) in 1997, the instrument achieved excellent charge resolution for elements near the Fe peak, permitting a new measurement of the element ratio Co/Ni. The best fit to the data, extrapolated to the top of the atmosphere, gives an upper limit for this ratio of 0.093\u00b10.037 over the energy interval 0.8 to 4.3 GeV/nucleon; because a Co peak is not seen in the data, this result is given as an upper limit. Comparing this upper limit with calculations by Webber & Gupta suggests that at the source of these cosmic rays a substantial amount of the electron-capture isotope 59Ni survived. This conclusion is in conflict with the clear evidence from ACE/CRIS below 0.5 GeV/nucleon that there is negligible 59Ni surviving at the source. Possible explanations for this apparent discrepancy are discussed.", "date": "2000-09-15", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "433-436", "id_number": "CaltechAUTHORS:SPOaipcp00", "isbn": "1-56396-951-3", "book_title": "Acceleration and Transport of Energetic Particles Observed in the Heliosphere: ACE 2000 Symposium, Indian Wells, CA, 5-8 January 2000", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:SPOaipcp00", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "2000-35", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "Richard A." } }, { "id": "Miller-M", "name": { "family": "Miller", "given": "Marjorie" } }, { "id": "Jokopii-J-R", "name": { "family": "Jokipii", "given": "J. R." } }, { "id": "Lee-M-A", "name": { "family": "Lee", "given": "Martin A." } }, { "id": "Zurbuchen-T-H", "name": { "family": "Zurbuchen", "given": "Thomas H." } }, { "id": "Mobius-E", "name": { "family": "Mobius", "given": "Eberhard" } } ] }, "doi": "10.1063/1.1324354", "primary_object": { "basename": "SPOaipcp00.pdf", "url": "https://authors.library.caltech.edu/records/cvz0y-fxz43/files/SPOaipcp00.pdf" }, "pub_year": "2000", "author_list": "Sposato, S. H.; Barbier, L. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/6reps-nx144", "eprint_id": 9380, "eprint_status": "archive", "datestamp": "2023-08-21 21:34:10", "lastmod": "2024-01-12 23:29:29", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Kulkarni-S-R", "name": { "family": "Kulkarni", "given": "S. R." }, "orcid": "0000-0001-5390-8563" }, { "id": "Berger-Edo", "name": { "family": "Berger", "given": "E." }, "orcid": "0000-0002-9392-9681" }, { "id": "Bloom-J-S", "name": { "family": "Bloom", "given": "J. S." }, "orcid": "0000-0002-7777-216X" }, { "id": "Chaffee-F", "name": { "family": "Chaffee", "given": "F." } }, { "id": "Diercks-A", "name": { "family": "Diercks", "given": "A." } }, { "id": "Djorgovski-S-G", "name": { "family": "Djorgovski", "given": "S. G." }, "orcid": "0000-0002-0603-3087" }, { "id": "Frail-D-A", "name": { "family": "Frail", "given": "D. A." } }, { "id": "Galama-T-J", "name": { "family": "Galama", "given": "T. J." } }, { "id": "Goodrich-R-W", "name": { "family": "Goodrich", "given": "R. W." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "F. A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Sari-R", "name": { "family": "Sari", "given": "R." }, "orcid": "0000-0002-1084-3656" }, { "id": "Yost-S-A", "name": { "family": "Yost", "given": "S. A." } } ] }, "title": "The afterglows of gamma-ray bursts", "ispublished": "unpub", "full_text_status": "public", "keywords": "gamma-ray sources (astronomical), intergalactic matter, sky brightness, astronomical techniques, gamma-ray scattering, afterglows, cosmic ray energy spectra, astrophysical radiation mechanisms, X-ray astronomy", "note": "\u00a9 2000 American Institute of Physics. \n\nIssue Date: September 8, 2000. \n\nOur research is supported by NASA and NSF. JSB holds a Fannie & John Hertz Foundation Fellowship, AD holds a Millikan Postdoctoral Fellowship in Experimental Physics, TJG holds a Fairchild Foundation Postdoctoral Fellowship in Observational Astronomy and RS holds Fairchild Foundation Senior Fellowship in Theoretical Astrophysics. The VLA is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. The W.M. Keck Observatory is operated by the California Association for Research in Astronomy, a scientific partnership among California Institute of Technology, the University of California and the National Aeronautics and Space Administration. It was made possible by the generous financial support of the W.M. Keck Foundation.\n\nPublished - KULaipcp00c.pdf
", "abstract": "Gamma-ray burst astronomy has undergone a revolution in the last three years, spurred by the discovery of fading long-wavelength counterparts. We now know that at least the long-duration GRBs lie at cosmological distances with estimated electromagnetic energy release of 10^51\u201310^53 erg, making these the brightest explosions in the Universe. In this article we review the current observational state, beginning with the statistics of X-ray, optical, and radio afterglow detections. We then discuss the insights these observations have given to the progenitor population, the energetics of the GRB events, and the physics of the afterglow emission. We focus particular attention on the evidence linking GRBs to the explosion of massive stars. Throughout, we identify remaining puzzles and uncertainties, and emphasize promising observational tools for addressing them. The imminent launch of HETE-2 and the increasingly sophisticated and coordinated ground-based and space-based observations have primed this field for fantastic growth.", "date": "2000-09-08", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "277-297", "id_number": "CaltechAUTHORS:KULaipcp00c", "isbn": "1-56396-947-5", "book_title": "Gamma Ray Bursts: 5th Huntsville Symposium, Huntsville, AL, 18-22 October 1999", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:KULaipcp00c", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" }, { "agency": "NSF" }, { "agency": "Fannie and John Hertz Foundation" }, { "agency": "Sherman Fairchild Foundation" }, { "agency": "Robert A. Millikan Fellowship" }, { "agency": "W. M. Keck Foundation" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" }, { "id": "Division-of-Geological-and-Planetary-Sciences" } ] }, "contributors": { "items": [ { "name": { "family": "Kippen", "given": "R. Marc" } }, { "name": { "family": "Mallozzi", "given": "Robert S." } }, { "name": { "family": "Fishman", "given": "Gerald J." } } ] }, "doi": "10.1063/1.1361549", "primary_object": { "basename": "KULaipcp00c.pdf", "url": "https://authors.library.caltech.edu/records/6reps-nx144/files/KULaipcp00c.pdf" }, "pub_year": "2000", "author_list": "Kulkarni, S. R.; Berger, E.; et el." }, { "id": "https://authors.library.caltech.edu/records/twvnn-9jm27", "eprint_id": 84233, "eprint_status": "archive", "datestamp": "2023-08-19 06:06:14", "lastmod": "2024-01-14 19:30:03", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "F. A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Boggs-S-E", "name": { "family": "Boggs", "given": "S. E." }, "orcid": "0000-0001-9567-4224" }, { "id": "Bolotnikov-A-E", "name": { "family": "Bolotnikov", "given": "A." } }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "F. E." }, "orcid": "0000-0001-5679-1946" }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. R." } }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "W. W." } }, { "id": "Hailey-C-J", "name": { "family": "Hailey", "given": "C. J." } }, { "id": "Jimenez-Garate-M-A", "name": { "family": "Jimenez-Garate", "given": "M." } }, { "id": "Mao-Peter-H", "name": { "family": "Mao", "given": "P. H." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Windt-D-L", "name": { "family": "Windt", "given": "D. L." } } ] }, "title": "Development of the High-Energy Focusing Telescope (HEFT) balloon experiment", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2000 Society of Photo-Optical Instrumentation Engineers (SPIE).\n\nPublished - 693.pdf
", "abstract": "The High Energy Focusing Telescope (HEFT) is a balloon-borne experiment employing focusing optics in the hard X-ray/soft gamma-ray band (20 - 100 keV) for sensitive observations of astrophysical sources. The primary scientific objectives include imaging and spectroscopy of ^(44)Ti emission in young supernova remnants, sensitive hard X-ray observations of obscured Active Galactic Nuclei, and spectroscopic observations of accreting high-magnetic field pulsars. Over the last four years, we have developed grazing-incidence depth-graded multilayer optics and high spectral resolution solid stat Cadmium Zinc Telluride pixel detectors in order to assemble a balloon-borne experiment with sensitivity and imaging capability superior to previous satellite missions operating in this band. In this paper, we describe the instrument design, and present recent laboratory demonstrations of the optics and detector technologies.", "date": "2000-07-18", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "place_of_pub": "Bellingham, WA", "pagerange": "693-699", "id_number": "CaltechAUTHORS:20180110-152121578", "isbn": "9780819436375", "book_title": "X-Ray Optics, Instruments, and Missions III", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180110-152121578", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Tr\u00fcmper-J-E", "name": { "family": "Tr\u00fcmper", "given": "Joachim E." } }, { "id": "Aschenbach-B", "name": { "family": "Aschenbach", "given": "Bernd" } } ] }, "doi": "10.1117/12.391608", "primary_object": { "basename": "693.pdf", "url": "https://authors.library.caltech.edu/records/twvnn-9jm27/files/693.pdf" }, "pub_year": "2000", "author_list": "Harrison, F. A.; Boggs, S. E.; et el." }, { "id": "https://authors.library.caltech.edu/records/a6tzq-0w896", "eprint_id": 84255, "eprint_status": "archive", "datestamp": "2023-08-19 06:06:24", "lastmod": "2024-01-14 19:30:29", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Windt-D-L", "name": { "family": "Windt", "given": "D." } }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "F." }, "orcid": "0000-0001-5679-1946" }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "W." } }, { "id": "Hailey-C-J", "name": { "family": "Hailey", "given": "C." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "F." }, "orcid": "0000-0003-2992-8024" }, { "id": "Jimenez-Garate-M-A", "name": { "family": "Jimenez-Garate", "given": "M." } }, { "id": "Kalyanaraman-R", "name": { "family": "Kalyanaraman", "given": "R." } }, { "id": "Mao-Peter-H", "name": { "family": "Mao", "given": "P." } } ] }, "title": "X-ray multilayer coatings for use at energies above 100 keV", "ispublished": "unpub", "full_text_status": "public", "keywords": "multilayer coatings, hard X-ray optics", "note": "\u00a9 2000 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\n\nThe authors are grateful to E. Ziegler, V. Honkimaki, M. S. Del Rio, A. Souvorov, A. Freund, M. Ohler, and R. Hustache for their help and support in facilitating the high-energy reflectance measurements made at ESRF. This research was supported in part by NASA under grant no. NAG-5-5128, and by the U.S. Dept. of Energy, Office of Science, Laboratory Technology Division under contract DE-AC5-96OR22464 with Lockheed Martin Energy Research Corp. and contract DE-ACO5-760R00033 with Oak Ridge Associated Universities.\n\nPublished - 442.pdf
", "abstract": "We discuss the development of X-ray multilayer coatings for use as broad-band reflectors operating at energies above 100 keV. Such coatings can be used to produce hard X-ray telescopes that will make possible a variety of entirely new astronomical observations. We summarize our recent investigation into the growth, structure and hard X-ray performance of depth-graded W/Si multilayers, present follow-up information on Cu/Si multilayers, and discuss preliminary results obtained with Ni/Si, Ni._8Cr._2/Si, and Ni._(93)V._(07)/Si multilayers.", "date": "2000-07-18", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "442-447", "id_number": "CaltechAUTHORS:20180111-115315911", "isbn": "0-8194-3637-2", "book_title": "X-Ray Optics, Instruments, and Missions III", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180111-115315911", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG-5-5128" }, { "agency": "Department of Energy (DOE)", "grant_number": "DE-AC05-96OR22464" }, { "agency": "Department of Energy (DOE)", "grant_number": "DE-ACO5-760OR00033" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Tr\u00fcmper-J-E", "name": { "family": "Tr\u00fcmper", "given": "Joachim E." } }, { "id": "Aschenbach-B", "name": { "family": "Aschenbach", "given": "Bernd" } } ] }, "doi": "10.1117/12.391581", "primary_object": { "basename": "442.pdf", "url": "https://authors.library.caltech.edu/records/a6tzq-0w896/files/442.pdf" }, "pub_year": "2000", "author_list": "Windt, D.; Christensen, F.; et el." }, { "id": "https://authors.library.caltech.edu/records/j13np-8ch86", "eprint_id": 88381, "eprint_status": "archive", "datestamp": "2023-08-19 06:06:29", "lastmod": "2024-01-14 20:32:01", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "Finn E." }, "orcid": "0000-0001-5679-1946" }, { "id": "Chakan-J-M", "name": { "family": "Chakan", "given": "James M." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Boggs-S-E", "name": { "family": "Boggs", "given": "Steven E." }, "orcid": "0000-0001-9567-4224" }, { "id": "Mao-Peter-H", "name": { "family": "Mao", "given": "Peter H." } }, { "id": "Prince-T-A", "name": { "family": "Prince", "given": "Tom" }, "orcid": "0000-0002-8850-3627" }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "William W." } }, { "id": "Hailey-C-J", "name": { "family": "Hailey", "given": "Charles J." } }, { "id": "Windt-D-L", "name": { "family": "Windt", "given": "David L." } } ] }, "title": "Grazing incidence optics designs for future gamma-ray missions", "ispublished": "unpub", "full_text_status": "public", "keywords": "Hard X-ray/Gamma-ray optics, Multilayers, High Energy Astrophysics", "note": "\u00a9 2000 Society of Photo-Optical Instrumentation Engineers (SPIE).\n\nPublished - 278.pdf
", "abstract": "Sensitive nuclear line spectroscopy for observations of prompt emission from supernovae, as well as mapping of remnants has been a primary goal of gamma-ray astrophysics since its inception. A number of key lines lie in the energy band from 10 - 600 keV. In this region of the spectrum, observations have to-date been limited by high background and poor angular resolution. In this paper, we present several designs capable of extending the sensitivity of grazing incidence optics into this energy range. In particular, we discuss a 15 m focal length design for NASA's High-Sensitivity Spectroscopic Imaging Mission concept, as well as a 50 m focal length design which can extend ESA's XEUS mission into this band. We demonstrate that an unprecedented line sensitivity of 10^(-7) cm^(-2) s^(-1) can be achieved for the most important lines in this energy band.", "date": "2000-07-18", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "278-283", "id_number": "CaltechAUTHORS:20180731-114052512", "isbn": "9780819436375", "book_title": "X-Ray Optics, Instruments, and Missions III", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180731-114052512", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Tr\u00fcmper-J-E", "name": { "family": "Tr\u00fcmper", "given": "Joachim E." } }, { "id": "Achenbach-B", "name": { "family": "Achenbach", "given": "Bernd" } } ] }, "doi": "10.1117/12.391563", "primary_object": { "basename": "278.pdf", "url": "https://authors.library.caltech.edu/records/j13np-8ch86/files/278.pdf" }, "pub_year": "2000", "author_list": "Christensen, Finn E.; Chakan, James M.; et el." }, { "id": "https://authors.library.caltech.edu/records/q4679-6jm37", "eprint_id": 84237, "eprint_status": "archive", "datestamp": "2023-08-19 06:06:19", "lastmod": "2024-01-14 19:30:09", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "Finn E." }, "orcid": "0000-0001-5679-1946" }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "William W." } }, { "id": "Hailey-C-J", "name": { "family": "Hailey", "given": "Charles J." } }, { "id": "Jimenez-Garate-M-A", "name": { "family": "Jimenez-Garate", "given": "Mario A." } }, { "id": "Windt-D-L", "name": { "family": "Windt", "given": "David L." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Mao-Peter-H", "name": { "family": "Mao", "given": "Peter H." } }, { "id": "Ziegler-E", "name": { "family": "Ziegler", "given": "Eric" } }, { "id": "Honkimaki-V", "name": { "family": "Honkimaki", "given": "Veijo" } }, { "id": "Sanchez-de-Rio-M", "name": { "family": "S. del Rio", "given": "Manuel" } }, { "id": "Freund-A-K", "name": { "family": "Freund", "given": "Andreas K." } }, { "id": "Ohler-M", "name": { "family": "Ohler", "given": "Michael" } } ] }, "title": "Hard x-ray characterization of a HEFT single-reflection prototype", "ispublished": "unpub", "full_text_status": "public", "keywords": "Hard X-ray optics, Multilayers, Synchrotron radiation, High Energy Astrophysics", "note": "\u00a9 2000 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nWe are grateful R. Hustache of the ESRF for expert technical assistance during the measurements.\n\nPublished - 626.pdf
", "abstract": "We have measured the hard X-ray reflectivity and imaging performance from depth graded W/Si multilayer coated mirror segments mounted in a single reflection cylindrical prototype for the hard X-ray telescopes to be flown on the High Energy Focusing Telescope (HEFT) balloon mission. Data have been obtained in the energy range from 18 - 170 keV at the European Synchrotron Radiation Facility and at the Danish Space Research Institute at 8 keV. The modeling of the reflectivity data demonstrate that the multilayer structure can be well described by the intended power law distribution of the bilayer thicknesses optimized for the telescope performance and we find that all the data is consistent with an interfacial width of 4.5 \u00c5. We have also demonstrated that the required 5% uniformity of the coatings is obtained over the mirror surface and we have shown that it is feasible to use similar W/Si coatings for much higher energies than the nominal energy range of HEFT leading the way for designing Gamma-ray telescopes for future astronomical applications. Finally we have demonstrate 35 arcsecond Half Power Diameter imaging performance of the one bounce prototype throughout the energy range of the HEFT telescopes.", "date": "2000-07-18", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "place_of_pub": "Bellingham, WA", "pagerange": "626-638", "id_number": "CaltechAUTHORS:20180110-155844989", "isbn": "9780819436375", "book_title": "X-Ray Optics, Instruments, and Missions III", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180110-155844989", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Tr\u00fcmper-J-E", "name": { "family": "Tr\u00fcmper", "given": "Joachim E." } }, { "id": "Aschenbach-B", "name": { "family": "Aschenbach", "given": "Bernd" } } ] }, "doi": "10.1117/12.391602", "primary_object": { "basename": "626.pdf", "url": "https://authors.library.caltech.edu/records/q4679-6jm37/files/626.pdf" }, "pub_year": "2000", "author_list": "Christensen, Finn E.; Craig, William W.; et el." }, { "id": "https://authors.library.caltech.edu/records/z32fp-atg15", "eprint_id": 87477, "eprint_status": "archive", "datestamp": "2023-08-19 05:58:29", "lastmod": "2024-01-14 20:18:12", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Kulkarni-S-R", "name": { "family": "Kulkarni", "given": "S. R." }, "orcid": "0000-0001-5390-8563" }, { "id": "Berger-Edo", "name": { "family": "Berger", "given": "E." }, "orcid": "0000-0002-9392-9681" }, { "id": "Bloom-J-S", "name": { "family": "Bloom", "given": "J. S." }, "orcid": "0000-0002-7777-216X" }, { "id": "Chaffee-F-H", "name": { "family": "Chaffee", "given": "F." } }, { "id": "Diercks-A-R", "name": { "family": "Diercks", "given": "A." } }, { "id": "Djorgovski-S-G", "name": { "family": "Djorgovski", "given": "S. G." }, "orcid": "0000-0002-0603-3087" }, { "id": "Frail-D-A", "name": { "family": "Frail", "given": "D. A." } }, { "id": "Galama-T-J", "name": { "family": "Galama", "given": "T. J." } }, { "id": "Goodrich-R-W", "name": { "family": "Goodrich", "given": "R. W." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "F. A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Sari-R", "name": { "family": "Sari", "given": "R." }, "orcid": "0000-0002-1084-3656" }, { "id": "Yost-S-A", "name": { "family": "Yost", "given": "S. A." } } ] }, "title": "Afterglows of gamma-ray bursts", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2000 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nOur research is supported by NASA and NSF. JSB thanks the Fannie & John Hertz Foundation for their generous support, AD holds a Millikan Postdoctoral Fellowship in Experimental Physics, TJG holds a Fairchild Foundation Postdoctoral Fellowship in Observational Astronomy and RS holds Fairchild Foundation Senior Fellowship in Theoretical Astrophysics. The VLA is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. The W. M. Keck Observatory is operated by the California Association for Research in Astronomy, a scientific partnership among California Institute of Technology, the University of California and the National Aeronautics and Space Administration. It was made possible by the generous financial support of the W. M. Keck Foundation.\n\nPublished - 9.pdf
", "abstract": "Gamma-ray burst astronomy has undergone a revolution in the last three years, spurred by the discover of fading long- wavelength counterparts. We now know that at least the long duration GRBs lie at cosmological distances with estimated electromagnetic energy release of 10^(51)-10^(53) erg, making these the brightest explosions in the Universe. In this article we review the current observational state of the long-lived 'afterglow' emission that accompanies GRBs at X-ray, optical, and radio afterglow wavelengths. We then discuss the insights these observations have given to the progenitor population, the energetics of the GRB events, and the physics of the afterglow emission. We focus particular attention on the evidence linking GRBs to the explosion of massive stars. Throughout, we identify remaining puzzles and uncertainties, and emphasize promising observations tools for addressing them. The imminent launch of HETE-2, the increasingly sophisticated and coordinated ground-based and space-based observations, and the increasing availability of 10-m class optical telescopes have primed this field for fantastic growth.", "date": "2000-06-29", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "9-21", "id_number": "CaltechAUTHORS:20180629-132701664", "isbn": "0819436305", "book_title": "Discoveries and Research Prospects from 8- to 10-Meter-Class Telescopes", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180629-132701664", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Fannie and John Hertz Foundation" }, { "agency": "Robert A. Millikan Fellowship" }, { "agency": "Sherman Fairchild Foundation" }, { "agency": "NASA" }, { "agency": "NSF" }, { "agency": "W. M. Keck Foundation" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" }, { "id": "Division-of-Geological-and-Planetary-Sciences" } ] }, "contributors": { "items": [ { "id": "Bergeron-J", "name": { "family": "Bergeron", "given": "Jacqueline" } } ] }, "doi": "10.1117/12.390135", "primary_object": { "basename": "9.pdf", "url": "https://authors.library.caltech.edu/records/z32fp-atg15/files/9.pdf" }, "pub_year": "2000", "author_list": "Kulkarni, S. R.; Berger, E.; et el." }, { "id": "https://authors.library.caltech.edu/records/t7n41-x6b11", "eprint_id": 9382, "eprint_status": "archive", "datestamp": "2023-08-21 21:18:31", "lastmod": "2024-01-12 23:29:31", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Kulkarni-S-R", "name": { "family": "Kulkarni", "given": "S. R." }, "orcid": "0000-0001-5390-8563" }, { "id": "Berger-Edo", "name": { "family": "Berger", "given": "E." }, "orcid": "0000-0002-9392-9681" }, { "id": "Bloom-J-S", "name": { "family": "Bloom", "given": "J. S." }, "orcid": "0000-0002-7777-216X" }, { "id": "Chaffee-F", "name": { "family": "Chaffee", "given": "F." } }, { "id": "Diercks-A", "name": { "family": "Diercks", "given": "A." } }, { "id": "Djorgovski-S-G", "name": { "family": "Djorgovski", "given": "S. G." }, "orcid": "0000-0002-0603-3087" }, { "id": "Frail-D-A", "name": { "family": "Frail", "given": "D. A." } }, { "id": "Galama-T-J", "name": { "family": "Galama", "given": "T. J." } }, { "id": "Goodrich-R-W", "name": { "family": "Goodrich", "given": "R. W." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "F. A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Sari-R", "name": { "family": "Sari", "given": "R." }, "orcid": "0000-0002-1084-3656" }, { "id": "Yost-S-A", "name": { "family": "Yost", "given": "S. A." } } ] }, "title": "The afterglows of gamma-ray bursts", "ispublished": "unpub", "full_text_status": "public", "keywords": "gamma-ray sources (astronomical), gamma-ray astronomy, astrophysical radiation mechanisms, astronomical spectra, galaxies, star formation, supernovae, shock waves, astrophysical jets", "note": "\u00a9 2000 American Institute of Physics. \n\nIssue Date: June 23, 2000. \n\nOur research is supported by NASA and NSF. JSB holds a Fannie & John Hertz Foundation Fellowship, AD holds a Millikan Postdoctoral Fellowship in Experimental Physics, TJG holds a Fairchild Foundation Postdoctoral Fellowship in Observational Astronomy and RS holds Fairchild Foundation Senior Fellowship in Theoretical Astrophysics. The VLA is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. The W.M. Keck Observatory is operated by the California Association for Research in Astronomy, a scientific partnership among California Institute of Technology, the University of California and the National Aeronautics and Space Administration. It was made possible by the generous financial support of the W.M. Keck Foundation.\n\nPublished - KULaipcp00b.pdf
", "abstract": "Gamma-ray burst astronomy has undergone a revolution in the last three years, spurred by the discovery of fading long-wavelength counterparts. We now know that at least the long duration GRBs lie at cosmological distances with estimated electromagnetic energy release of 10^51\u201310^53 erg, making these the brightest explosions in the Universe. In this article we review the current observational state, beginning with the statistics of X-ray, optical, and radio afterglow detections. We then discuss the insights these observations have given to the progenitor population, the energetics of the GRB events, and the physics of the afterglow emission. We focus particular attention on the evidence linking GRBs to the explosion of massive stars. Throughout, we identify remaining puzzles and uncertainties, and emphasize promising observational tools for addressing them. The imminent launch of HETE-2 and the increasingly sophisticated and coordinated ground-based and space-based observations have primed this field for fantastic growth.", "date": "2000-06-23", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "191-212", "id_number": "CaltechAUTHORS:KULaipcp00b", "isbn": "1-56396-943-2", "book_title": "Cosmic Explosions: Tenth Astrophysics Conference, College Park, MD, 11-13 October 1999", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:KULaipcp00b", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" }, { "agency": "NSF" }, { "agency": "Fannie and John Hertz Foundation" }, { "agency": "Robert A. Millikan Fellowship" }, { "agency": "Sherman Fairchild Foundation" }, { "agency": "W. M. Keck Foundation" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" }, { "id": "Division-of-Geological-and-Planetary-Sciences" } ] }, "contributors": { "items": [ { "name": { "family": "Holt", "given": "Stephen S." } }, { "name": { "family": "Zhang", "given": "William W." } } ] }, "doi": "10.1063/1.1291715", "primary_object": { "basename": "KULaipcp00b.pdf", "url": "https://authors.library.caltech.edu/records/t7n41-x6b11/files/KULaipcp00b.pdf" }, "pub_year": "2000", "author_list": "Kulkarni, S. R.; Berger, E.; et el." }, { "id": "https://authors.library.caltech.edu/records/23x9h-eg582", "eprint_id": 28267, "eprint_status": "archive", "datestamp": "2023-08-21 21:17:26", "lastmod": "2024-01-13 05:49:25", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "New views of solar energetic particles from the Advanced Composition Explorer", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar radiation; solar cosmic ray particles; cosmic ray apparatus; element relative abundance; isotope relative abundance; cosmic ray origin; cosmic ray composition; transport processes; acceleration", "note": "\u00a9 2000 American Institute of Physics.\n\nIssue Date: 13 June 2000.\n \nI am grateful to the SEPICA, SIS, and ULEIS teams for providing unpublished data and figures. I especially appreciate discussions with C. Cohen, J. Dwyer, B. Klecker,\nR. Leske, G. Mason, J. Mazur, E. Moebius, M. Popecki, T. von Rosenvinge, E. Stone, and M. Wiedenbeck, and technical assistance from A. Davis. This research was supported by NASA under grant NAG5-6912.\n\nPublished - MEWaipcp00.pdf
", "abstract": "Since its launch in August 1997, the Advanced Composition Explorer has been measuring the elemental, isotopic, and ionic charge-state composition of solar energetic particles with three new, high-resolution instruments (SEPICA, SIS, and ULEIS). These studies span the energy range from ~20 keV/nucleon to >100 MeV/nucleon, and include elements from He to Ni (2\u2264Z\u226428). This paper reviews early highlights of these investigations and discusses the implications for theories of the origin, acceleration, and transport of solar energetic particles.", "date": "2000-06-13", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, New York", "pagerange": "265-273", "id_number": "CaltechAUTHORS:20111201-093608591", "isbn": "1563969394", "book_title": "26th International Cosmic Ray Conference", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111201-093608591", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "2000-52", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Dingus-B-L", "name": { "family": "Dingus", "given": "Brenda L." } }, { "id": "Kieda-D-B", "name": { "family": "Kieda", "given": "David B." } }, { "id": "Salamon-M-H", "name": { "family": "Salamon", "given": "Michael H." } } ] }, "doi": "10.1063/1.1291480", "primary_object": { "basename": "MEWaipcp00.pdf", "url": "https://authors.library.caltech.edu/records/23x9h-eg582/files/MEWaipcp00.pdf" }, "pub_year": "2000", "author_list": "Mewaldt, R. A." }, { "id": "https://authors.library.caltech.edu/records/z0jaf-va696", "eprint_id": 28268, "eprint_status": "archive", "datestamp": "2023-08-21 21:17:31", "lastmod": "2024-01-13 05:49:27", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" } ] }, "title": "Anomalous cosmic ray composition from ACE", "ispublished": "unpub", "full_text_status": "public", "keywords": "galactic cosmic rays; cosmic ray composition; cosmic ray energy spectra; isotope relative abundance; meteorites, solar wind; cosmic ray apparatus", "note": "\u00a9 2000 American Institute of Physics.\n\nIssue Date: 13 June 2000.\n\nThis research was supported by NASA at the California Institute of Technology (under grant NAG5-6912), the Jet Propulsion Laboratory, and the Goddard Space Flight Center. We thank the large group of individuals who contributed to the development of the SIS instrument [17] and the SIS science collaborators R. A. Mewaldt, E. R. Christian, C. M. S. Cohen, A. C. Cummings, P. L. Slocum, E. C. Stone, T. T. von Rosenvinge, and M. E. Wiedenbeck. Climax neutron \nmonitor data were obtained from the web, courtesy of the University of Chicago, National Science Foundation grant ATM-9613963.\n\nPublished - LESaipcp00a.pdf
", "abstract": "During solar quiet periods, the Solar Isotope Spectrometer (SIS) on the Advanced Composition Explorer (ACE) measures the composition and energy spectra of anomalous cosmic rays (ACRs) with energies >8 MeV/nucleon in interplanetary space at 1 AU. In particular, the spectra of individual isotopes for the ACR elements N, O, and Ne are studied with SIS. Intensity enhancements are found in low energy 18O and 22Ne, with relative abundances of ^(18)O/^(16)O ~ 0.002 and ^(22)Ne/^(20)Ne ~ 0.1. The neon abundance ratio appears more similar to that found in the solar wind than in meteorites and is far below that determined for the galactic cosmic ray (GCR) source, indicating that GCRs contain material from sources other than just the local interstellar medium.", "date": "2000-06-13", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, New York", "pagerange": "274-282", "id_number": "CaltechAUTHORS:20111201-093626829", "isbn": "1563969394", "book_title": "26th International Cosmic Ray Conference", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111201-093626829", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" }, { "agency": "JPL" }, { "agency": "Goddard Space Flight Center" } ] }, "other_numbering_system": { "items": [ { "id": "2000-50", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Dingus-B-L", "name": { "family": "Dingus", "given": "Brenda L." } }, { "id": "Kieda-D-B", "name": { "family": "Kieda", "given": "David B." } }, { "id": "Salamon-M-H", "name": { "family": "Salamon", "given": "Michael H." } } ] }, "doi": "10.1063/1.1291481", "primary_object": { "basename": "LESaipcp00a.pdf", "url": "https://authors.library.caltech.edu/records/z0jaf-va696/files/LESaipcp00a.pdf" }, "pub_year": "2000", "author_list": "Leske, R. A." }, { "id": "https://authors.library.caltech.edu/records/w3em0-63644", "eprint_id": 27931, "eprint_status": "archive", "datestamp": "2023-08-21 21:05:30", "lastmod": "2024-01-13 05:48:26", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Grindlay-J", "name": { "family": "Grindlay", "given": "J." } }, { "id": "Bildsten-L", "name": { "family": "Bildsten", "given": "L." } }, { "id": "Chakrabarty-D", "name": { "family": "Chakrabarty", "given": "D." }, "orcid": "0000-0001-8804-8946" }, { "id": "Elvis-M", "name": { "family": "Elvis", "given": "M." } }, { "id": "Fabian-A", "name": { "family": "Fabian", "given": "A." } }, { "id": "Fiore-F", "name": { "family": "Fiore", "given": "F." } }, { "id": "Gehrels-N", "name": { "family": "Gehrels", "given": "N." } }, { "id": "Hailey-C", "name": { "family": "Hailey", "given": "C." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Hartmann-D", "name": { "family": "Hartmann", "given": "D." } }, { "id": "Prince-T-A", "name": { "family": "Prince", "given": "Thomas A." }, "orcid": "0000-0002-8850-3627" }, { "id": "Ramsey-B", "name": { "family": "Ramsey", "given": "B." } }, { "id": "Rothschild-R", "name": { "family": "Rothschild", "given": "R." } }, { "id": "Skinner-G", "name": { "family": "Skinner", "given": "G." } }, { "id": "Woosley-S", "name": { "family": "Woosley", "given": "S." } } ] }, "title": "EXIST: A high sensitivity hard x-ray imaging sky survey mission for ISS", "ispublished": "unpub", "full_text_status": "public", "keywords": "surveying; X-ray astronomy; X-ray sources (astronomical); gamma-ray sources (astronomical); active galaxies; black holes; accretion disks; pulsars; supernova remnants; astronomical instruments", "note": "\u00a9 2000 American Institute of Physics.\n\nIssue Date: 12 April 2000.\n\nPublished - GRIaipcp00.pdf
", "abstract": "A deep all-sky imaging hard x-ray survey and wide-field monitor is needed to extend soft (ROSAT) and medium (ABRIXAS2) x-ray surveys into the 10\u2013100 keV band at comparable sensitivity (~0.05 mCrab). This would enable discovery and study of \u22733000 obscured AGN, which probably dominate the hard x-ray background; detailed study of spectra and variability of accreting black holes and a census of BHs in the Galaxy; Gamma-ray bursts and associated massive star formation (PopIII) at very high redshift and Soft Gamma-ray Repeaters throughout the Local Group; and a full galactic survey for obscured supernova remnants. The Energetic X-ray Imaging Survey Telescope (EXIST) is a proposed array of 8\u00d71 m^2 coded aperture telescopes fixed on the International Space Station (ISS) with 160\u00b0\u00d740\u00b0 field of view which images the full sky each 90 min orbit. EXIST has been included in the most recent NASA Strategic Plan as a candidate mission for the next decade. An overview of the science goals and mission concept is presented.", "date": "2000-04-12", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "784-788", "id_number": "CaltechAUTHORS:20111122-162003558", "isbn": "1-56396-932-7", "book_title": "Fifth Compton Symposium", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111122-162003558", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "McConnell-M-L", "name": { "family": "McConnell", "given": "M. L." } }, { "id": "Ryan-J-M", "name": { "family": "Ryan", "given": "J. M." } } ] }, "doi": "10.1063/1.1303305", "primary_object": { "basename": "GRIaipcp00.pdf", "url": "https://authors.library.caltech.edu/records/w3em0-63644/files/GRIaipcp00.pdf" }, "pub_year": "2000", "author_list": "Grindlay, J.; Bildsten, L.; et el." }, { "id": "https://authors.library.caltech.edu/records/6nrxc-1kg42", "eprint_id": 28274, "eprint_status": "archive", "datestamp": "2023-08-21 20:51:36", "lastmod": "2024-01-13 05:49:35", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Liewer-P-C", "name": { "family": "Liewer", "given": "P. C." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Ayon-J-A", "name": { "family": "Ayon", "given": "J. A." } }, { "id": "Wallace-R-A", "name": { "family": "Wallace", "given": "R. A." } } ] }, "title": "NASA's interstellar probe mission", "ispublished": "unpub", "full_text_status": "public", "keywords": "space vehicles; solar radiation; radiation pressure; solar wind; cosmic dust; interstellar molecules; galactic cosmic rays; magnetic fields; asteroids; design of experiments", "note": "\u00a9 2000 American Institute of Physics.\n\nIssue Date: 19 January 2000.\n\nA portion of this work was conducted at the Jet Propulsion Laboratory, California Institute of Technology under\ncontract with the National Aeronautics and Space Administration. We wish to thank the other members of the\nInterstellar Probe Science and Technology Definition Team: E. Bakes, NASA Ames; P. Frisch, U. of Chicago; H.\nFunsten, LANL; M. Gruntman, USC; L. Johnson, MSFC; R. Jokipii, U. of Arizona; W. Kurth, U. of Iowa; J.\nLinsky, U. of Colorado; R. Malhotra, LPI; I. Mann, Caltech; R. McNutt, APL; E. Moebius, UNH; W. Reach,\nCaltech; S. Suess, MSFC; A. Szabo, GSFC; J. Trainor, GSFC/retired; G. Zank, U. of Delaware; T. Zurbuchen, U.\nof Michigan. Program Manager: S. Gavit, JPL. Program Scientist: V. Jones, NASA HQ. Deputy Program\nScientist: J. Ling, NASA HQ. Program Executive: G. Mucklow, NASA HQ. NASA Transportation: D. Stone,\nNASA HQ. Interagency Representatives: D. Goodwin, DOE and E. Loh, NSF. Foreign Guest Participants: W.\nDruge, U. of Kiel, Germany, B. Heber, Max Planck, Germany; C. Maccone, Torino, Italy. JPL Support: C.\nBudney, S. Dagostino, E. De Jong, K. Evans, W. Fang, R. Frisbee, C. Gardner, H. Garrett, S. Leifer, R. Miyake,\nN. Murphy, B. Nesmith, F. Pinto, G. Sprague, P. Willis, and K. Wilson.\n\nPublished - LIEaipcp00.pdf
", "abstract": "NASA's Interstellar Probe will be the first spacecraft designed to explore the nearby interstellar medium and its interaction with our solar system. As envisioned by NASA's Interstellar Probe Science and Technology Definition Team, the spacecraft will be propelled by a solar sail to reach >200 AU in 15 years. Interstellar Probe will investigate how the Sun interacts with its environment and will directly measure the properties and composition of the dust, neutrals and plasma of the local interstellar material which surrounds the solar system. In the mission concept developed in the spring of 1999, a 400-m diameter solar sail accelerates the spacecraft to ~15 AU/year, roughly 5 times the speed of Voyager 1&2. The sail is used to first bring the spacecraft to ~0.25 AU to increase the radiation pressure before heading out in the interstellar upwind direction. After jettisoning the sail at ~5 AU, the spacecraft coasts to 200\u2013400 AU, exploring the Kuiper Belt, the boundaries of the heliosphere, and the nearby interstellar medium.", "date": "2000-01-19", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, New York", "pagerange": "911-916", "id_number": "CaltechAUTHORS:20111201-093911642", "isbn": "156396919X", "book_title": "Space Technology and Applications International Forum", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111201-093911642", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" }, { "agency": "JPL/Caltech" } ] }, "other_numbering_system": { "items": [ { "id": "200043", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "El-Genk-M-S", "name": { "family": "El-Genk", "given": "Mohammed S." } } ] }, "doi": "10.1063/1.1302594", "primary_object": { "basename": "LIEaipcp00.pdf", "url": "https://authors.library.caltech.edu/records/6nrxc-1kg42/files/LIEaipcp00.pdf" }, "pub_year": "2000", "author_list": "Liewer, P. C.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/qgppk-yjp74", "eprint_id": 48903, "eprint_status": "archive", "datestamp": "2023-08-19 05:12:08", "lastmod": "2024-01-13 16:08:07", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Barghouty-A-F", "name": { "family": "Barghouty", "given": "A. F." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Lijowski-M", "name": { "family": "Lijowski", "given": "M." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } } ] }, "title": "Cosmic Ray Source Abundances and the Acceleration of Cosmic Rays", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2000 American Institute of Physics. This work was supported by NASA at the California Institute of Technology (under grant NAG5-6912), the Jet Propulsion Laboratory, the Goddard Space Flight Center, and Washington University.\n\nPublished - 1.1324355.pdf
", "abstract": "The galactic cosmic ray elemental source abundances display a fractionation that is possibly based on first ionization potential (FIP) or volatility. A few elements break the general correlation of FIP and volatility and the abundances of these may help to distinguish between models for the origin of the cosmic ray source material. Data from the Cosmic Ray Isotope Spectrometer instrument on NASA's Advanced Composition Explorer spacecraft were used to derive source abundances for several of these elements (Na, Cu, Zn, Ga, Ge). Three (Na, Cu, Ge) show depletions which could be consistent with a volatility-based source fractionation model.", "date": "2000-01", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "437-440", "id_number": "CaltechAUTHORS:20140826-100748785", "isbn": "1-56396-951-3", "book_title": "ACE 2000 Symposium", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140826-100748785", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" }, { "agency": "JPL" }, { "agency": "Goddard Space Flight Center" }, { "agency": "Washington University" } ] }, "other_numbering_system": { "items": [ { "id": "2000-36", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "Richard A." } }, { "id": "Miller-M", "name": { "family": "Miller", "given": "Marjorie" } }, { "id": "Jokipii-J-R", "name": { "family": "Jokipii", "given": "J. R." } }, { "id": "Lee-M-A", "name": { "family": "Lee", "given": "Martin A." } }, { "id": "Zurbuchen-T-H", "name": { "family": "Zurbuchen", "given": "Thomas H." } }, { "id": "Mobius-E", "name": { "family": "Mobius", "given": "Eberhard" } } ] }, "doi": "10.1063/1.1324355", "primary_object": { "basename": "1.1324355.pdf", "url": "https://authors.library.caltech.edu/records/qgppk-yjp74/files/1.1324355.pdf" }, "pub_year": "2000", "author_list": "George, J. S.; Wiedenbeck, M. E.; et el." }, { "id": "https://authors.library.caltech.edu/records/kt7gz-8wn91", "eprint_id": 48881, "eprint_status": "archive", "datestamp": "2023-08-19 05:05:57", "lastmod": "2024-01-13 16:07:59", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Measurements of the Heavy-Ion Elemental and Isotopic Composition in Large Solar Particle Events from ACE", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2000 Astronomical Society of the Pacific. This research was supported by NASA at the California Institute of Technology (under grant NAG5-6912), the Jet Propulsion Laboratory, and the Goddard Space Flight Center.\n\nPublished - Stone_2000p118.pdf
", "abstract": "Using the Solar Isotope Spectrometer (SIS) on the Advanced\nComposition Explorer (ACE), we have measured the isotopic composition of as many as eleven elements from He through Ni at energies of tens of MeV /nucleon in eleven solar energetic particle (SEP) events that have occurred since November 1997. We find that isotopic composition varies dramatically from event to event. For example, the ^(22)Ne/^(20)Ne ratio ranges from ~ 0. 7 to > 2 times the solar wind value, being lowest for iron-poor events and highest for iron-rich events. We present the SIS SEP isotope measurements to date and show that the strong correlation of elemental and isotopic abundance ratios suggests that elemental and isotopic fractionation are governed by the same process.", "date": "2000", "date_type": "published", "publisher": "Astronomical Society of the Pacific", "place_of_pub": "San Francisco, CA", "pagerange": "118-123", "id_number": "CaltechAUTHORS:20140826-071624732", "isbn": "1-58381-033-1", "book_title": "High Energy Solar Physics - Anticipating HESSI", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140826-071624732", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "1999-17", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Ramaty-R", "name": { "family": "Ramaty", "given": "R." } }, { "id": "Mandzhavidze-N", "name": { "family": "Mandzhavidze", "given": "N." } } ] }, "primary_object": { "basename": "Stone_2000p118.pdf", "url": "https://authors.library.caltech.edu/records/kt7gz-8wn91/files/Stone_2000p118.pdf" }, "pub_year": "2000", "author_list": "Leske, R. A.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/sv6jn-t8227", "eprint_id": 48883, "eprint_status": "archive", "datestamp": "2023-08-19 05:06:02", "lastmod": "2024-01-13 16:08:01", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Observations of ^3He-rich Solar Energetic Particle Events with the Solar Isotope Spectrometer", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2000 Astronomical Society of the Pacific. We thank the EPAM team and the ACE Science Center for making the electron data available to us. This research was supported by NASA at the California Institute of Technology (under grant NAG5-6912),\nat the Jet Propulsion Laboratory, and at the Goddard Space Flight Center.\n\nPublished - Stone_2000p124.pdf
", "abstract": "Using ~4 MeV /nucleon solar energetic particle data from\nthe Solar Isotope Spectrometer (SIS) on the Advanced Composition Explorer (ACE), we identify 60 ^3He-rich time periods longer than 5 hours in length. As many of these time periods do not have \"classical\" impulsive profiles, we classify each event as one of 4 event types (based on the morphology of the event). The time periods have been associated with solar events listed by the Space Environment Center and energetic electron events observed by the Electron, Proton, and Alpha Monitor (EPAM) on\nACE. Only half of the events could be associated with an x-ray event and 63% with an electron event.", "date": "2000", "date_type": "published", "publisher": "Astronomical Society of the Pacific", "place_of_pub": "San Francisco, CA", "pagerange": "124-129", "id_number": "CaltechAUTHORS:20140826-080801901", "isbn": "1-58381-033-1", "book_title": "High Energy Solar Physics - Anticipating HESSI", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140826-080801901", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "2000-54", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Ramaty-R", "name": { "family": "Ramaty", "given": "R." } }, { "id": "Mandzhavidze-N", "name": { "family": "Mandzhavidze", "given": "N." } } ] }, "primary_object": { "basename": "Stone_2000p124.pdf", "url": "https://authors.library.caltech.edu/records/sv6jn-t8227/files/Stone_2000p124.pdf" }, "pub_year": "2000", "author_list": "Cohen, C. M. S.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/1w6kj-6er02", "eprint_id": 55165, "eprint_status": "archive", "datestamp": "2023-08-19 05:06:54", "lastmod": "2024-01-13 16:16:15", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Cosmic-Ray Isotopic Composition Results from the ACE Mission", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2000 American Institute of Physics.\n\nThe work summarized here was performed by the ACE/CRIS team: N. E. Yanasak, J. S. George, W. R Binns, E. R. Christian, A. C. Cummings, P. L. 308 Downloaded 31 Aug 2010 to 131.215.196.47. Redistribution subject to AIP license or copyright; see http://proceedings.aip.org/about/rights_permissions Hink, R. A. Leske, M. Lijowski, J. Klarmann, S. M. Niebur, R. A. Mewaldt, E. C. Stone, and T. T. von Rosenvinge. This research w~is supported by NASA at the\nCalifornia Institute of Technology (under grant NAG5-6912), the Jet Propulsion Laboratory, the Goddard Space Flight Center, and Washington University.\n\nPublished - 2000-51.pdf
", "abstract": "The Cosmic Ray Isotope Spectrometer (CRIS) instrument on the Advanced Composition Explorer (ACE) mission has been making high precision measurements of the isotopic and elemental composition of galactic cosmic rays over the past two years. These observations have been used to investigate a range of topics including: 1) the nucleosynthetic processes that produced the cosmic-ray source material, 2) the processes responsible for fractionation of the elements in this material, 3) the time that elapsed between nucleosynthesis and acceleration to high energies, and 4) the confinement time of cosmic rays in the Galaxy. Highlights from CRIS investigations reported to date are summarized.", "date": "2000", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, N.Y.", "pagerange": "301-309", "id_number": "CaltechAUTHORS:20150224-163340284", "isbn": "1563969394", "book_title": "Proceedings of the 26th International Cosmic Ray Conference", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150224-163340284", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "2000-51", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Dingus-B-L", "name": { "family": "Dingus", "given": "Brenda L." } }, { "id": "Kieda-D-B", "name": { "family": "Kieda", "given": "David B." } }, { "id": "Salamon-M-H", "name": { "family": "Salamon", "given": "Michael H." } } ] }, "doi": "10.1063/1.1291484", "primary_object": { "basename": "2000-51.pdf", "url": "https://authors.library.caltech.edu/records/1w6kj-6er02/files/2000-51.pdf" }, "pub_year": "2000", "author_list": "Wiedenbeck, M. E." }, { "id": "https://authors.library.caltech.edu/records/h9z58-wyp89", "eprint_id": 88382, "eprint_status": "archive", "datestamp": "2023-08-19 04:48:01", "lastmod": "2024-01-14 20:32:03", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "F. A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. R." } }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "F. E." }, "orcid": "0000-0001-5679-1946" }, { "id": "Citterio-O", "name": { "family": "Citterio", "given": "O." } }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "W. W." } }, { "id": "Gehrels-N", "name": { "family": "Gehrels", "given": "N." } }, { "id": "Gorenstein-P", "name": { "family": "Gorenstein", "given": "P." } }, { "id": "Grindlay-J-E", "name": { "family": "Grindlay", "given": "J. E." }, "orcid": "0000-0002-1323-5314" }, { "id": "Hailey-C-J", "name": { "family": "Hailey", "given": "C. J." } }, { "id": "Kroeger-R-A", "name": { "family": "Kroeger", "given": "R. A." } }, { "id": "Kunieda-Hideyo", "name": { "family": "Kunieda", "given": "H." } }, { "id": "Pareschi-G", "name": { "family": "Pareschi", "given": "G." } }, { "id": "Parsons-A-M", "name": { "family": "Parsons", "given": "A. M." } }, { "id": "Petre-R", "name": { "family": "Petre", "given": "R." } }, { "id": "Romaine-S-E", "name": { "family": "Romaine", "given": "S. E." } }, { "id": "Ramsey-B-D", "name": { "family": "Ramsey", "given": "B. D." } }, { "id": "Tueller-J", "name": { "family": "Tueller", "given": "J." } }, { "id": "Ulmer-M-P", "name": { "family": "Ulmer", "given": "M." } }, { "id": "Weisskopf-M-C", "name": { "family": "Weisskopf", "given": "M. C." } }, { "id": "Windt-D-L", "name": { "family": "Windt", "given": "D. W." } } ] }, "title": "Technology development for the Constellation-X hard-x-ray telescope", "ispublished": "unpub", "full_text_status": "public", "keywords": "Hard X-ray Telescopes, X-ray Optics, Multilayers, Hard X-ray Detectors, X-ray Missions", "note": "\u00a9 1999 Society of Photo-Optical Instrumentation Engineers (SPIE).\n\nPublished - 104.pdf
", "abstract": "In addition to high resolving power in the traditional x-ray band, the Constellation X-ray scientific goals require broad bandpass, with response extending to E \u2273 40 keV. To achieve this objective, Constellation-X will incorporate a hard x-ray telescope (HXT) based on depth graded multilayer- coated grazing incidence optics and position-sensitive solid state detectors. This paper describes the HXT performance requires, provides an overview of the HXT optics and detector technology development efforts, and present example designs.", "date": "1999-10-22", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "104-111", "id_number": "CaltechAUTHORS:20180731-114052783", "isbn": "9780819432513", "book_title": "EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180731-114052783", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Siegmund-O-H-W", "name": { "family": "Siegmund", "given": "Oswald H. W." } }, { "id": "Flanagan-K-A", "name": { "family": "Flanagan", "given": "Kathryn A." } } ] }, "doi": "10.1117/12.366492", "primary_object": { "basename": "104.pdf", "url": "https://authors.library.caltech.edu/records/h9z58-wyp89/files/104.pdf" }, "pub_year": "1999", "author_list": "Harrison, F. A.; Cook, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/txqyt-pfs22", "eprint_id": 84240, "eprint_status": "archive", "datestamp": "2023-08-19 04:46:24", "lastmod": "2024-01-14 19:30:15", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Bolotnikov-A-E", "name": { "family": "Bolotnikov", "given": "A. E." } }, { "id": "Boggs-S-E", "name": { "family": "Boggs", "given": "S. E." }, "orcid": "0000-0001-9567-4224" }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. R." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "F. A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } } ] }, "title": "Use of a pulsed laser to study properties of CdZnTe pixel detectors", "ispublished": "unpub", "full_text_status": "public", "keywords": "CdZnTe detector characterization", "note": "\u00a9 1999 Society of Photo-Optical Instrumentation Engineers (SPIE).\n\nPublished - 52.pdf
", "abstract": "We have investigated the utility of employing a short (<4 ns) pulsed laser with wavelength tunable between 600 - 950 nm as a tool for studying and characterizing CdZnTe detectors. By using a single mode optical fiber and simple optics, we can focus the beam to a spot size of less than 10 micrometers and generate the number of the excess carriers equivalent to a several MeV gamma-ray either at the surface or deep inside the sample. The advantages of this technique over use of a collimated X-ray or alpha particle source are strong induced signal, precise pointing, and triggering capability. As examples of using this technique, we present the results of measurements of the drift velocity, electron lifetime, and electric field line distribution inside CZT pixel detectors.", "date": "1999-10-01", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "id_number": "CaltechAUTHORS:20180110-155845853", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180110-155845853", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Doty-F-P", "name": { "family": "Doty", "given": "F. P." } } ] }, "doi": "10.1117/12.363691", "primary_object": { "basename": "52.pdf", "url": "https://authors.library.caltech.edu/records/txqyt-pfs22/files/52.pdf" }, "pub_year": "1999", "author_list": "Bolotnikov, A. E.; Boggs, S. E.; et el." }, { "id": "https://authors.library.caltech.edu/records/9aert-kve84", "eprint_id": 84246, "eprint_status": "archive", "datestamp": "2023-08-19 04:46:29", "lastmod": "2024-01-14 19:30:17", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cook-W-R", "name": { "family": "Cook", "given": "Walter R." } }, { "id": "Boggs-S-E", "name": { "family": "Boggs", "given": "Steven E." }, "orcid": "0000-0001-9567-4224" }, { "id": "Bolotnikov-A-E", "name": { "family": "Bolotnikov", "given": "Aleksey E." } }, { "id": "Burnham-J-A", "name": { "family": "Burnham", "given": "Jill A." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Kecman-B", "name": { "family": "Kecman", "given": "Branislav" } }, { "id": "Matthews-B-W", "name": { "family": "Matthews", "given": "Brian W." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "Steven M." } }, { "id": "Fitzsimmons-M", "name": { "family": "Fitzsimmons", "given": "Michael" } } ] }, "title": "First test results from a high-resolution CdZnTe pixel detector with VLSI readout", "ispublished": "unpub", "full_text_status": "public", "keywords": "X-ray astrophysics - electronics - CdZnTe", "note": "\u00a9 1999 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nThis work was supported by the NASA SR&T program under grant No. NAG5-5128.\n\nPublished - 92.pdf
", "abstract": "We are developing a CdZnTe pixel detector with a custom low- noise analog VLSI readout for use in the High-Energy Focusing Telescope balloon experiment, as well as for future space astronomy applications. The goal of the program is to achieve good energy resolution (< 1 keV FWHM at 60 keV) and low threshold in a sensor with approximately 500 micrometers pixels. We have fabricated several prototype detector assemblies with 2 mm thick, 680 by 650 micrometers pitch CdZnTe pixel sensors indium bump bonded a VLSI readout chip developed at Caltech. Each readout circuit in the 8 X 8 prototype is matched to the detector pixel size, and contains a preamplifier, shaping amplifiers, and a peak stretcher/discriminator. In the first 8 X 8 prototype, we have demonstrated the low-noise preamplifier by routing the output signals off-chip for shaping and pulse-height analysis. Pulse height spectra obtained using a ^(241)Am source, collimated to illuminate a single pixel, show excellent energy resolution of 1.1 keV FWHM for the 60 keV line at room temperature. Line profiles are approximately Gaussian and dominated by electronic noise, however a small low energy tail is evident for the 60 keV line. We obtained slightly improved resolution of 0.9 keV FWHM at 60 keV by cooling the detector to 5 degree(s)C, near the expected balloon- flight operating temperature. Pulse height spectra obtained with the collimated source positioned between pixels show the effect of signal sharing for events occurring near the boundary. We are able to model the observed spectra using a Monte-Carlo simulation that includes the effects of photon interaction, charge transport and diffusion, pixel and collimator geometry, and electronic noise. By using the model to simulate the detector response to uncollimated radiation (including the effect of finite trigger threshold for reconstruction of the total energy of multi-pixel events), we find the energy resolution to be degraded by only 10% for full-face illumination, compared to the collimated case. The small value of the degradation is due directly to the low readout noise and amplifier threshold.", "date": "1999-10-01", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "92-96", "id_number": "CaltechAUTHORS:20180111-071950145", "isbn": "0-8194-3255-5", "book_title": "Penetrating Radiation Systems and Applications", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180111-071950145", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-5128" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Doty-F-P", "name": { "family": "Doty", "given": "F. P." } } ] }, "doi": "10.1117/12.363688", "primary_object": { "basename": "92.pdf", "url": "https://authors.library.caltech.edu/records/9aert-kve84/files/92.pdf" }, "pub_year": "1999", "author_list": "Cook, Walter R.; Boggs, Steven E.; et el." }, { "id": "https://authors.library.caltech.edu/records/28c9r-w1n54", "eprint_id": 84236, "eprint_status": "archive", "datestamp": "2023-08-19 04:44:25", "lastmod": "2024-01-14 19:30:07", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hussain-A-M", "name": { "family": "Hussain", "given": "Ahsen M." } }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "Finn E." }, "orcid": "0000-0001-5679-1946" }, { "id": "Jimenez-Garate-M-A", "name": { "family": "Jimenez-Garate", "given": "Mario A." } }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "William W." } }, { "id": "Hailey-C-J", "name": { "family": "Hailey", "given": "Charles J." } }, { "id": "Decker-T-R", "name": { "family": "Decker", "given": "Todd R." } }, { "id": "Stern-M", "name": { "family": "Stern", "given": "Marcela" } }, { "id": "Windt-D-L", "name": { "family": "Windt", "given": "David L." } }, { "id": "Mao-Peter-H", "name": { "family": "Mao", "given": "Peter H." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Pareschi-G", "name": { "family": "Pareschi", "given": "Giovanni" } }, { "id": "Sanchez-del-Rio-M", "name": { "family": "Sanchez del Rio", "given": "Manuel" } }, { "id": "Souvorov-A", "name": { "family": "Souvorov", "given": "Alexei" } }, { "id": "Freund-A-K", "name": { "family": "Freund", "given": "Andreas K." } }, { "id": "Tucoulou-R", "name": { "family": "Tucoulou", "given": "Remi" } }, { "id": "Madsen-A", "name": { "family": "Madsen", "given": "Anders" } }, { "id": "Mammen-C-B", "name": { "family": "Mammen", "given": "Christian" } } ] }, "title": "X-ray scatter measurements from thermally slumped thin glass substrates for the HEFT hard x-ray telescopes", "ispublished": "unpub", "full_text_status": "public", "keywords": "X-ray Reflectivity, X-ray Scattering, Synchrotron Radiation, Hard X-ray Telescopes, X-ray Optics, Segmented Optics, Wolter-I Optics, Thermal Slumping, Depth Graded Multilayers", "note": "\u00a9 1999 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nThe authors wish to thank the European Synchrotron Radiation Facility (ESRF) for the allocated beamtime and the technical support during the experiments, and the continuing support in this project.\n\nPublished - 184.pdf
", "abstract": "We have performed x-ray specular reflectivity and scattering measurements of thermally slumped glass substrates on x-ray diffractometers utilizing a rotating anode x-ray source at the Danish Space Research Institute (DSRI) and synchrotron radiation at the European Synchrotron Radiation Facility (ESRF) optics Bending Magnet beamline. In addition, we tested depth graded W/Si multilayer-coated slumped glass using x-ray specular reflectivity measurements at 8.048 keV and 28 keV and energy-dispersive measurements in the 20-50 keV rang at a double-axis diffractometer at the Orsted Laboratory, University of Copenhagen. The thermally slumped glass substrates will be used to fabricate the hard x-ray grazing incidence optics for the High-Energy Focusing Telescope. We compared the measurements to the SODART- mirrors from the SRG telescope mission program. The surface scatter measurement of the thermally slumped glass substrates yields Half Power Diameters (HPD's) of single- bounce mirrors of full-illuminated lengths of ~ 40 arcseconds for typical substrates and as low as ~ 10 arcseconds for the best substrates, whereas the SODART mirrors yields HPD's of ~ 80 arcseconds with very little variation. Both free-standing glass substrates and prototype mounted and multilayer-coated optics were tested. The result demonstrate that the surface scatter contribution, plus any contribution from the mounting procedure, to the Half Power Diameter from a telescope using the slumped glass optics will be in the subarcminute range.In addition we measured low surface microroughness, yielding high reflectivity, from the glass substrates, as well as from the depth graded W/Si multilayer-coated glass glass (interfacial width 4.2 \u00c5).", "date": "1999-09-29", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "place_of_pub": "Bellingham, WA", "pagerange": "184-196", "id_number": "CaltechAUTHORS:20180110-155844697", "isbn": "9780819432520", "book_title": "X-Ray Optics, Instruments, and Missions II", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180110-155844697", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "European Synchrotron Radiation Facility" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Hoover-R-B", "name": { "family": "Hoover", "given": "Richard B." } }, { "id": "Walker-A-B-C-II", "name": { "family": "Walker", "given": "Arthur B. C." } } ] }, "doi": "10.1117/12.363635", "primary_object": { "basename": "184.pdf", "url": "https://authors.library.caltech.edu/records/28c9r-w1n54/files/184.pdf" }, "pub_year": "1999", "author_list": "Hussain, Ahsen M.; Christensen, Finn E.; et el." }, { "id": "https://authors.library.caltech.edu/records/jyra6-yqs82", "eprint_id": 54702, "eprint_status": "archive", "datestamp": "2023-08-19 04:34:36", "lastmod": "2023-10-20 20:07:51", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Lukasiak-Andrew", "name": { "family": "Lukasiak", "given": "A." } }, { "id": "McDonald-F-B", "name": { "family": "McDonald", "given": "F. B." } }, { "id": "Webber-William-R", "name": { "family": "Webber", "given": "W. R." }, "orcid": "0000-0001-9238-9145" }, { "id": "Cummings-Alan-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Lal-Nand", "name": { "family": "Lal", "given": "N." } } ] }, "title": "The Voyager Electron Telescope - A status report", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nPublished - 1999-08.pdf
", "abstract": "The CRS instrument complement on Voyager 1 and 2 includes a small electron telescope covering the energy range from 6 - -160 MeV. While recent observations out to 73 AU indicate the telescope response is dominated by background events produced by higher energy galactic cosmic ray ions, these data do provide upper limits on the electron intensity that are several orders of magnitude below the expected local interstellar levels. Since the background rate is expected to increase by less than a factor of - 3, the response of the electron telescope should be a sensitive indicator as the Voyagers approach the modulation boundary.", "date": "1999-08", "date_type": "published", "publisher": "University of Utah", "id_number": "CaltechAUTHORS:20150211-092502762", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150211-092502762", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1999-08", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Dingus-Brenda-L", "name": { "family": "Dingus", "given": "Brendsa L." } }, { "id": "Kieda-David-B", "name": { "family": "Kieda", "given": "David B." } }, { "id": "Salamon-Michael-H", "name": { "family": "Salamon", "given": "Michael H." } } ] }, "primary_object": { "basename": "1999-08.pdf", "url": "https://authors.library.caltech.edu/records/jyra6-yqs82/files/1999-08.pdf" }, "pub_year": "1999", "author_list": "Lukasiak, A.; McDonald, F. B.; et el." }, { "id": "https://authors.library.caltech.edu/records/ta3xp-ts246", "eprint_id": 48691, "eprint_status": "archive", "datestamp": "2023-08-19 04:27:43", "lastmod": "2024-01-13 16:07:45", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" } ] }, "title": "Estimating Characteristics of the Heliosphere Using Anomalous Cosmic Ray Observations at Solar Maximum", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1999 American Institute of Physics. Published online 16 June 1999. We thank W. R. Webber for supplying the Pioneer 10 data. This work was supported by NASA under contract NAS7-918.\n\nPublished - 1.58794.pdf
", "abstract": "Observations of the energy spectra of anomalous cosmic ray (ACR) oxygen were acquired in the outer heliosphere during the last solar maximum period in 1990 when the particle distributions are expected to be more nearly spherically symmetric than at solar minimum. Hence, we use a simple one-dimensional model of ACR acceleration and transport to fit the observed energy spectra at Voyagers 1 and 2 and Pioneer 10. The inferred interplanetary radial diffusion coefficient is remarkably consistent with recent theoretical estimates. The next solar maximum is expected to occur in the outer heliosphere in early 2001 when Voyager 1 will be \u223c80 AU from the Sun. We predict that the intensity of ACR oxygen and helium at Voyagers 1 and 2 will be sufficiently large, and the model uncertainties sufficiently small, that it should be possible in 2001 to determine the remaining distance to the shock to within \u00b11 AU if the shock is within \u223c5 AU, \u22123 to +6 AU if the shock is within \u223c15 AU, and \u22125 to +14 AU if the shock is within \u223c25 AU.", "date": "1999-06-16", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "201-204", "id_number": "CaltechAUTHORS:20140819-132327153", "isbn": "1563968657", "book_title": "The solar wind nine conference", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140819-132327153", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-918" } ] }, "other_numbering_system": { "items": [ { "id": "1998-08", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Habbal-S-R", "name": { "family": "Habbal", "given": "S. R." } }, { "id": "Esser-R", "name": { "family": "Esser", "given": "R." } }, { "id": "Holweg-J-V", "name": { "family": "Hollweg", "given": "J. V." } }, { "id": "Isenberg-P-A", "name": { "family": "Isenberg", "given": "P. A." } } ] }, "doi": "10.1063/1.58794", "primary_object": { "basename": "1.58794.pdf", "url": "https://authors.library.caltech.edu/records/ta3xp-ts246/files/1.58794.pdf" }, "pub_year": "1999", "author_list": "Stone, E. C. and Cummings, A. C." }, { "id": "https://authors.library.caltech.edu/records/d6mht-rbg39", "eprint_id": 54749, "eprint_status": "archive", "datestamp": "2023-08-19 03:44:10", "lastmod": "2023-10-20 20:11:09", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Correlated Elemental and Isotopic Variations in Solar Energetic Particles", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nThis work was supported by NASA at Caltech (under NAG5-6912), the Jet Propulsion Laboratory, and at the Goddard Space Flight Center.\n\nPublished - 1999-16.pdf
", "abstract": "We consider whether the observed fractionation of Ne isotopes recently reported in solar energetic particle\n(SEP) events is due to the same charge-to-mass dependent fractionation processes that apparently cause SEP elemental composition variations. We find that the observed correlation of the 22Ne/20Ne and Na/Mg ratios in nine large SEP events is consistent with a common fractionation process if the charge states of these ions are characteristic of a source temperature of -1.5 to -4 million degrees.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150211-164947365", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150211-164947365", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "1999-16", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-16.pdf", "url": "https://authors.library.caltech.edu/records/d6mht-rbg39/files/1999-16.pdf" }, "pub_year": "1999", "author_list": "Mewaldt, R. A.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/wcpfn-fwd38", "eprint_id": 54778, "eprint_status": "archive", "datestamp": "2023-08-19 03:44:24", "lastmod": "2023-10-20 20:12:41", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "Sollitt-L-S", "name": { "family": "Sollitt", "given": "L. S." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Measurements of the Elemental Composition and Energy Spectra of Anomalous Cosmic Ray Nuclei by the Solar Isotopic Spectrometer on ACE", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nSome of this work is supported by NASA contracts NAS7-9l8 and NAS5-30704 and NASA grants NAG5-6912 and NAG5-2963.\n\nPublished - 1999-21.pdf
", "abstract": "The Solar Isotope Spectrometer (SIS) instrument on the Advanced Composition Explorer (ACE) spacecraft provides high resolution measurements of the elemental and isotopic compositions of energetic nuclei between approximately 10 and 100 Me V /nucleon from He to Zn (Z = 2 to 30). Solar quiet times from late 1997 to the present will be used to measure the energy spectra of elements previously observed in the anomalous cosmic rays, as well as search for new, rare elements. Relative abundances of the observed species will also be derived and related to the abundances of neutral atoms in the local interstellar medium.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150212-102928289", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150212-102928289", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-30704" }, { "agency": "NASA", "grant_number": "NAG5-6912" }, { "agency": "NASA", "grant_number": "NAG5-2963" } ] }, "other_numbering_system": { "items": [ { "id": "1999-21", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-21.pdf", "url": "https://authors.library.caltech.edu/records/wcpfn-fwd38/files/1999-21.pdf" }, "pub_year": "1999", "author_list": "Christian, E. R.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/2ff39-79792", "eprint_id": 54500, "eprint_status": "archive", "datestamp": "2023-08-19 03:42:55", "lastmod": "2023-10-20 16:33:08", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Bogdanov-A-T", "name": { "family": "Bogdanov", "given": "A. T." } }, { "id": "M\u00f6bius-E", "name": { "family": "M\u00f6bius", "given": "E." } }, { "id": "Klecker-B", "name": { "family": "Klecker", "given": "B." } }, { "id": "Hilchenback-M", "name": { "family": "Hilchenback", "given": "M." } }, { "id": "Hovestadt-D", "name": { "family": "Hovestadt", "given": "D." } }, { "id": "Kistler-L-M", "name": { "family": "Kistler", "given": "L. M." } }, { "id": "Popecki-M-A", "name": { "family": "Popecki", "given": "M. A." } }, { "id": "Lund-E-J", "name": { "family": "Lund", "given": "E. J." } }, { "id": "Heirtzler-D", "name": { "family": "Heirtzler", "given": "D." } }, { "id": "Galvin-A-B", "name": { "family": "Galvin", "given": "A. B." }, "orcid": "0000-0003-3752-5700" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "A Study of ^3He Spectra and Abundances in Impulsive Solar Energetic Particle Events - Results from Measurements with ACE/SEPICA, ACE/SIS and SOHO/HSTOF", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nThe authors would like to acknowdge the unnamed contribution of numerous individuals at the Institutions appearing in the author list without whose effort this work would not have been\npossible. The work on the SEPICA instrument was supported by NASA under contract NAS5-32626.\n\nPublished - 1999-18.pdf
", "abstract": "Energy spectra of the He isotopes and the energy dependence of the ^3He/^4He ratio during a number of impulsive solar energetic particle events (SEP) observed between September 1997 and December 1998 are analyzed. Data covering the energy range from 0.1 to 10 MeV/amu were supplied by three instruments with complementary energy ranges: the Solar Energetic Particle Ionic Charge Analyzer (SEPICA) and the Solar Isotope Spectrometer (SIS) on ACE, and the time-of-flight mass spectrometer HSTOF on SOHO. We confirm the trend of a monotonic increase of the 3He abundance with energy up to a maximum in the region of a few MeV/amu found in previous ISEE studies and extend the analysis to events of intermediate 3He enrichment. We briefly discuss the observational data and their relation to existing theoretical work on selection and acceleration mechanisms in impulsive flares.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150206-150809671", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150206-150809671", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-32626" } ] }, "other_numbering_system": { "items": [ { "id": "1999-18", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-18.pdf", "url": "https://authors.library.caltech.edu/records/2ff39-79792/files/1999-18.pdf" }, "pub_year": "1999", "author_list": "Bogdanov, A. T.; M\u00f6bius, E.; et el." }, { "id": "https://authors.library.caltech.edu/records/5gsmq-63197", "eprint_id": 54835, "eprint_status": "archive", "datestamp": "2023-08-19 03:45:43", "lastmod": "2023-10-20 20:27:55", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Barghouty-A-F", "name": { "family": "Barghouty", "given": "A. F." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "Simulation of the Charge State and Energy Spectrum of Solar Energetic Iron", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nWork has been supported by NSF grant no. 9810653 and NASA-JOVE grant no. NAG8-1208 (AFB), and\nby NASA grants NAS5-30704 and NAGS-6912 at Caltech.\nReferences\n\nPublished - 1999-43.pdf
", "abstract": "In a nonequilibrium model that includes shock-induced acceleration, we simulate the charge state and energy spectra of solar energetic iron. In this model the mean charge state exhibits an energy dependence seen in recent large solar events by SAMPEX and ACE. The simulated energy spectrum is a power-law and charge distributions are roughly Gaussians. The density distributions are smooth in charge-momentum space, suggesting that the accelerated ion retains no memory of its initial charge as well as momentum conditions.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150213-114414284", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150213-114414284", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "9810653" }, { "agency": "NASA-JOVE", "grant_number": "NAG8-1208" }, { "agency": "NASA", "grant_number": "NAs" }, { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "1999-43", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-43.pdf", "url": "https://authors.library.caltech.edu/records/5gsmq-63197/files/1999-43.pdf" }, "pub_year": "1999", "author_list": "Barghouty, A. F. and Mewaldt, R. A." }, { "id": "https://authors.library.caltech.edu/records/43h9y-mhr41", "eprint_id": 54698, "eprint_status": "archive", "datestamp": "2023-08-19 03:43:28", "lastmod": "2023-10-20 20:07:36", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Hamilton-D-C", "name": { "family": "Hamilton", "given": "D. C." } }, { "id": "Hillard-M-E", "name": { "family": "Hillard", "given": "M. E." } }, { "id": "Krimigis-S-M", "name": { "family": "Krimigis", "given": "S. M." }, "orcid": "0000-0003-2781-2386" } ] }, "title": "Voyager Observations of Anomalous and Galactic Cosmic Rays During 1998", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nWe thank E. Christian for algorithms to analyze the Hand He events which do not stop within the CRS detectors (e.g., ,(,80 MeV/nuc). This work was supported by NASA under contract NAS7-918.\n\nPublished - 1999-06.pdf
", "abstract": "We present energy spectra of anomalous and galactic cosmic rays over a wide energy range by combining data from the Low Energy Charged Particle experiment and the Cosmic Ray experiment on the Voyager spacecraft. The data set covers all of 1998. We compare energy spectra obtained from Voyagers 1 and 2. The energy range covered contains the peak intensity in the spectra for anomalous cosmic ray hydrogen, helium, and oxygen. The spectra presented can be used to constrain models of solar modulation.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150211-091234906", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150211-091234906", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-918" } ] }, "collection": "CaltechAUTHORS", "other_numbering_system": { "items": [ { "id": "1999-06", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory", "value": "Space Radiation Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-06.pdf", "url": "https://authors.library.caltech.edu/records/43h9y-mhr41/files/1999-06.pdf" }, "pub_year": "1999", "author_list": "Stone, E. C.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/77vpk-4r192", "eprint_id": 54670, "eprint_status": "archive", "datestamp": "2023-08-19 03:42:59", "lastmod": "2023-10-20 19:13:52", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Lijowski-M-L", "name": { "family": "Lijowski", "given": "M.L." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } } ] }, "title": "Measurements of the Isotopic Abundances of Galactic Cosmic Rays and Their Implications for Cosmic Ray Origin", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Copyright 1988 - 2015 - Astronomical Society of the Pacific.\n\nWe are grateful to the large number of individuals that contributed significantly to the development of the CRIS instrument (listed in Stone et al. 1998). This research has been supported by NASA at the California Institute of Technology (grant NAG5-6912), the Goddard Space Flight\nCenter, the Jet Propulsion Laboratory, Washington University in St. Louis.\n\nPublished - 1999-02.pdf
", "abstract": "We present measurements of the nickel and cobalt isotopes\nfrom the Cosmic Ray Isotope Spectrometer (CRJS) which was launched in\nAugust, 1997 aboard the NASA Advanced Composition Explorer (ACE).\nThe objectives of CRJS are to measure the isotopic abundances and energy\nspectra of galactic cosmic rays ~GCRs) with 3 \u2264 Z \u2264 30. We find\nthat for these nuclei the measured ^5Ni/^(60)Ni and ^(59)Co/^(60)Ni ratios imply\na time delay between nucleosynthesis and acceleration to cosmic ray\nenergies of > 10^5 y.", "date": "1999", "date_type": "published", "publisher": "Astronomical Society of the Pacific", "id_number": "CaltechAUTHORS:20150210-162025599", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150210-162025599", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "1999-02", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Ramaty-R", "name": { "family": "Ramaty", "given": "Reuven" } }, { "id": "Vangion-Flam-E", "name": { "family": "Vangioni-Flam", "given": "Elisabeth" } }, { "id": "Cass\u00e9-M", "name": { "family": "Cass\u00e9", "given": "Michel-" } }, { "id": "Olive-K", "name": { "family": "Olive", "given": "Keith" } } ] }, "primary_object": { "basename": "1999-02.pdf", "url": "https://authors.library.caltech.edu/records/77vpk-4r192/files/1999-02.pdf" }, "pub_year": "1999", "author_list": "Binns, W. R.; Christian, E. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/ybtrk-q4713", "eprint_id": 54821, "eprint_status": "archive", "datestamp": "2023-08-19 03:45:01", "lastmod": "2023-10-20 20:27:10", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Lijowski-M", "name": { "family": "Lijowski", "given": "M." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Implications for Cosmic Ray Propagation from ACE Measurements of Radioactive Clock Isotope Abundances", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nPublished - 1999-30.pdf
", "abstract": "Galactic cosmic rays (GCR) interact to produce secondary fragments as they pass through the interstellar medium (ISM). Abundances of the long-lived radioactive secondaries ^(10)Be, ^(26)Al, ^(36)Cl, and ^(54)Mn can be used to a derive the confinement time of cosmic rays in the galaxy. Abundances for these species have been measured recently using the Cosmic Ray Isotope Spectrometer (CRIS) aboard the Advanced Composition Explorer (ACE) spacecraft. To interpret this data we have modeled the production and propagation of the radioactive secondaries, taking into account recently published isotopic production cross-sections. Abundances for all species are consistent with a confinement time of \u03c0_(esc) ~22 x 10^6 years.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150213-094618167", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150213-094618167", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1999-30", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-30.pdf", "url": "https://authors.library.caltech.edu/records/ybtrk-q4713/files/1999-30.pdf" }, "pub_year": "1999", "author_list": "Yanasak, N. E.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/jq5vd-bhv16", "eprint_id": 54695, "eprint_status": "archive", "datestamp": "2023-08-19 03:43:24", "lastmod": "2023-10-20 20:07:27", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" } ] }, "title": "A Tilt Model for Anomalous Cosmic Rays and the Location of the Solar Wind Termination Shock", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright University of Utah. Provided by the NASA Astrophysics Data System.\n\nWe thank W. Webber for providing PIO data. We thank the Wilcox Solar Observatory for the tilt data obtained through their website. We thank the ACE/SIS teani for the ACR 0 intensities. This work was supported by NASA under contract NAS7-918.\n\nPublished - 1999-05.pdf
", "abstract": "We use the observed relationship of the radial gradient of anomalous cosmic rays (ACRs), as measured in the outer heliosphere with instruments on the Voyager and Pioneer spacecraft, and the tilt of the heliospheric neutral current sheet to develop a model for the time dependence of ACRs at all radii near the helioequatorial plane. This phenomenological model reproduces the observations at 1 AU, Voyagers 1 and 2, and Pioneer 10 quite well. The model also indicates that the helioequatorial source intensity at the shock varies by a factor of 10, depending on solar magnetic polarity. The location of the solar wind termination shock during 1980-1990 is found to be 92 AU, with a best-fit of 84 AU.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150211-090354763", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150211-090354763", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-918" } ] }, "collection": "CaltechAUTHORS", "other_numbering_system": { "items": [ { "id": "19*99-05", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory", "value": "Space Radiation Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-05.pdf", "url": "https://authors.library.caltech.edu/records/jq5vd-bhv16/files/1999-05.pdf" }, "pub_year": "1999", "author_list": "Stone, E. C. and Cummings, A. C." }, { "id": "https://authors.library.caltech.edu/records/2w0xq-pb864", "eprint_id": 54832, "eprint_status": "archive", "datestamp": "2023-08-19 03:45:29", "lastmod": "2023-10-20 20:27:46", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Silberberg-R", "name": { "family": "Silberberg", "given": "R." } }, { "id": "Tsao-C-H", "name": { "family": "Tsao", "given": "C.H." } }, { "id": "Barghouty-A-F", "name": { "family": "Barghouty", "given": "A. F." } } ] }, "title": "A Comparison of Models of Cosmic-Ray Source Composition", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nThe work has been supported by NASA grants NAG5-5053 and NAG5-5165, and NASA-JOVE grant no. NAG8-1208 (AFB). The authors are also grateful for the use of computer facilities at the Naval Research Laboratory, Washington, D.C.\n\nPublished - 1999-38.pdf
", "abstract": "Several models for the origin of cosmic rays have been proposed to explain the relative differences of cosmic-ray source abundances and the general abundances of elements and isotopes. One model, for example, assumes injection at normal stars like the sun, using FIP-modified coronal rather than photospheric abundances. Another with acceleration and breakup of grains by supernova shock waves has been popular with several authors. On the basis of the known abundances of few elements, we demonstrate how a critical evaluation of one model's merits against the others can be made.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150213-105717226", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150213-105717226", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-5165" }, { "agency": "NASA-JOVE", "grant_number": "NAG8-1208" }, { "agency": "NASA", "grant_number": "NAG5-5165" } ] }, "other_numbering_system": { "items": [ { "id": "1999-38", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-38.pdf", "url": "https://authors.library.caltech.edu/records/2w0xq-pb864/files/1999-38.pdf" }, "pub_year": "1999", "author_list": "Silberberg, R.; Tsao, C.H.; et el." }, { "id": "https://authors.library.caltech.edu/records/kw6nf-zq891", "eprint_id": 54776, "eprint_status": "archive", "datestamp": "2023-08-19 03:44:20", "lastmod": "2023-10-20 20:12:35", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Measurements of ^3He and Heavy Elements in Impulsive SEP Events", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nThis research was supported by NASA at the California Institute of Technology (under grant NAG5-69l2), the Jet Propulsion Laboratory, and the Goddard Space Flight Center.\n\nPublished - 1999-20.pdf
", "abstract": "The Solar Isotope Spectrometer (SIS), an instrument on board the Advanced Composition Explorer (ACE), measures solar energetic particle (SEP) elemental and isotopic abundances during solar events. During solar quiet times, SIS measures isotopes of low-energy cosmic rays from the Galaxy and isotopes of the anomalous cosmic ray component. The heavy element content at ~10-20 MeV /nuc of two SEP events with large enhancements (>400x) of the ^3He/^4He ratio relative to coronal composition has been studied. We find heavy element abundance ratios which are consistent with those derived from past studies of ^3He-rich events within statistical limitations.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150212-102026660", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150212-102026660", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-20.pdf", "url": "https://authors.library.caltech.edu/records/kw6nf-zq891/files/1999-20.pdf" }, "pub_year": "1999", "author_list": "Slocum, P. L.; Christian, E. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/mct6w-e4a97", "eprint_id": 54784, "eprint_status": "archive", "datestamp": "2023-08-19 03:44:43", "lastmod": "2023-10-20 20:13:03", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Lijowski-M", "name": { "family": "Lijowski", "given": "M." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } } ] }, "title": "Time Variations of Galactic Comic Ray Intensities Near Earth: 1997 to 1999", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nThis research was supported by NASA at the California Institute of Technology (under grant NAG5-6912), the Jet Propulsion Laboratory, the Goddard Space Flight Center, and\nWashington University. Neutron monitor data were provided by the University of Chicago with support from NSF grant ATM-9613963.\n\nPublished - 1999-25.pdf
", "abstract": "The time dependences of the intensities of low-energy galactic cosmic ray (GCR) nuclei have been investigated using instrumentation carried aboard the Advanced Composition Explorer (ACE). The intensities of these low energy particles near Earth began to decline from solar minimum levels in late-1997 /early-1998, shortly after the launch of ACE, and have been continuously monitored by the\nCosmic Ray Isotope Spectrometer (CRIS) instrument since that time. We find that the variations are well correlated with variations of higher energy cosmic rays, as indicated by neutron monitor observations. The relative magnitude of the GCR variations is significantly less than previously\nreported for anomalous cosmic rays. We also compare the fluctuations observed for different energies and different nuclides.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150212-115444336", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150212-115444336", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "ATM-9613963" } ] }, "other_numbering_system": { "items": [ { "id": "1999-25", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-25.pdf", "url": "https://authors.library.caltech.edu/records/mct6w-e4a97/files/1999-25.pdf" }, "pub_year": "1999", "author_list": "Wiedenbeck, M. E.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/4y9z5-h1g45", "eprint_id": 54693, "eprint_status": "archive", "datestamp": "2023-08-19 03:43:20", "lastmod": "2023-10-20 20:07:21", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Radial Interplanetary Mean Free Paths Inferred from Anomalous Cosmic Ray Observations in the Outer Heliosphere", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright University of Utah. Provided by the NASA Astrophysics Data System.\n\nWe thank E. Christian for some of the data processing algorithms used in the analysis. We thank J. Richardson for provid ing the V2 solar wind velocites and J. T. Hoeksema for providing the tilt angles of the heliospheric current sheet (Hoeksema 1992). This work was supported by NASA under contract NAS7-918.\n\nPublished - 1999-04.pdf
", "abstract": "We use two independent techniques to estimate the rigidity dependence of the interplanetary mean free pathlength in the outer heliosphere in 1998: I) inferences from gradients of anomalous cosmic rays (ACRs) between Voyagers 1 and 2 and 2) inferences from the shape of the ACR energy spectra. Both techniques indicate that the mean free path increases rapidly between \"\"0.25 GV and I GV but is independent of rigidity above \"'J GV, in agreement with the dependence used by Steenberg et al. (I 999) to fit the 1998 ACR energy spectra using a full-drift, two-dimensional solution to the transport equation. The gradient method also yields an\nestimate of the magnitude of the mean free path, which is \"'2 \u00b1 0.4 AU at 1.5 GV, the same as the value of 2.0 AU used by Steenberg et al. (1999). In addition, we find that the mean free path at 0.42 GV is 1.4 \u00b1 0.8 from anisotropy measurements of 4-7.8 MeV/nuc ACR He from Voyager 1. This value is consistent with the estimate from the gradient method and from the Steenberg et al. fits. At 1.5 GV, the mean free path during the 1998 solar minimum is \"'I 0 times larger than that estimated for solar maximum in 1990, suggesting that for A>O, when particles drift from high to low latitudes, the radial gradient at low latitudes reflects the much\nsmaller radial gradients theoretically expected (Zank et al. 1998) at higher latitudes.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150211-084408358", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150211-084408358", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-918" } ] }, "other_numbering_system": { "items": [ { "id": "1999-04", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-04.pdf", "url": "https://authors.library.caltech.edu/records/4y9z5-h1g45/files/1999-04.pdf" }, "pub_year": "1999", "author_list": "Cummings, A. C. and Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/sj0f6-k1g47", "eprint_id": 54739, "eprint_status": "archive", "datestamp": "2023-08-19 03:43:56", "lastmod": "2023-10-20 20:10:25", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Time Variations of Solar Energetic Particle Abundances Observed by the ACE Spacecraft", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nTvR thanks Donald Reames and Allan Tylka for instructive discussions on this topic. This work was supported by NASA at the California Institute of Technology (under grant NAG5-6912), the Jet Propulsion Laboratory, and the Goddard Space Flight Center.\n\nPublished - 1999-13.pdf
", "abstract": "The abundances of elements from Helium to Iron have been observed in nine different solar energetic particle (SEP) events using the Solar Isotope Spectrometer (SIS) on-board the Advanced Composition Explorer (ACE). SIS has a large geometry factor (~38 cm^2-sr), enabling us to observe abundances on a time scale of hours. In this paper we repo1t on substantial temporal variations of the observed abundances within events and from event to event. We wish to understand these results in terms of acceleration and\ntranspo1t processes, taking into account factors such as first ionization potential, particle charge states,\nspectral shape, and event type (gradual and impulsive). It is essential that these variations be understood if\nwe are to reliably estimate the composition of the sun from direct observations of SEP abundances.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150211-142207624", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150211-142207624", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "1999-13", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1999-13.pdf", "url": "https://authors.library.caltech.edu/records/sj0f6-k1g47/files/1999-13.pdf" }, "pub_year": "1999", "author_list": "von Rosenvinge, T. T.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/48349-02z70", "eprint_id": 54722, "eprint_status": "archive", "datestamp": "2023-08-19 03:43:52", "lastmod": "2023-10-20 20:09:05", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Characteristics of 3He-Rich Energetic Particle Events Observed with the SIS Instrument on ACE", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nThis research was supported by NASA at the California Institute of Technology (under grant NAG5-6912), the Jet Propulsion Laboratory, and the Goddard Space Flight\nCenter.\n\nPublished - 1999-19.pdf
", "abstract": "We report observations of ^3He-rich solar energetic particle (SEP) events made with the Solar Isotope Spectrometer (SIS) aboard the Advanced Composition Explorer (ACE) spacecraft. SIS has been measuring helium isotopes above ~ 4 MeV /nucleon since August 1997 using a dE/dx vs. totalenergy\nsensor system employing large-area silicon solid-state detectors. We show examples of the helium isotope data being collected by SIS. Using data such as these it is possible to characterize the properties of ^3He-rich events including isotopic abundances, intensities, spectral hardness, and timing characteristics. These data can be correlated with other sources of information for the same events including particle measurements made at lower energies and observations of electromagnetic radiations from the flare site. Results of these types of analyses will be presented at the conference.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150211-114545256", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150211-114545256", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "1999-19", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-19.pdf", "url": "https://authors.library.caltech.edu/records/48349-02z70/files/1999-19.pdf" }, "pub_year": "1999", "author_list": "Wiedenbeck, M. E.; Christian, E. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/yav94-yj128", "eprint_id": 54779, "eprint_status": "archive", "datestamp": "2023-08-19 03:44:28", "lastmod": "2023-10-20 20:12:44", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Measurements of the Isotopic Composition of Anomalous Cosmic Ray N, O, and Ne from ACE", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright University of Utah. Provided by the NASA ADS. \n\nWe thank the technical crews from New Mexico State University, Goddard Space Flight Center, California Institute\nof Technology, and the Universitat Siegen for their\ndedicated support. We are grateful to the National Scienti\u00d0c\nBalloon Facility for carrying out a successful \u00d1ight of the\nIMAX payload. The IMAX project was supported in the\nUnited States by NASA under RTOP 353-87-02 (GSFC) and grants NAGW-1418 (NMSU/BBMF) and NAGW-1919 (Caltech) and in Germany by the Deutsche Forschungsgemeinschaft (DFG) and the Bundesministerium fur Bildung, Wissenschaft, Forschung, und Technologie (BMBF).\n\nPublished - 1999-22.pdf
", "abstract": "We have measured the elemental and isotopic composition of anomalous cosmic rays (ACRs) with energies > 8 Me V /nucleon during solar quiet periods between August 1997 and March 1998, using the Solar Isotope Spectrometer (SIS) on the Advanced Composition Explorer (ACE). The capabilities of the SIS instrument allow the examination of spectra of individual ACR isotopes. In addition to the well-known low-energy ACR\nenhancements in the intensity of elemental 0 and Ne, similar enhancements are found in ^(18)O and ^(22)Ne, with\nrelative abundances of ^(18)O/^(16)O ~ 0.002 and ^(22)Ne/(20)Ne ~ 0.1. The neon abundance ratio appears more\nsimilar to that found in the solar wind than in meteorites, and is far below that deduced for the galactic cosmic\nray (GCR) source, indicating that GCRs are not simply an accelerated sample of the local interstellar medium.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150212-103610912", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150212-103610912", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGW-1919" }, { "agency": "NASA", "grant_number": "RTOP 353-87-02" } ] }, "other_numbering_system": { "items": [ { "id": "1999-22", "name": "Space Radiation Laboratory." } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-22.pdf", "url": "https://authors.library.caltech.edu/records/yav94-yj128/files/1999-22.pdf" }, "pub_year": "1999", "author_list": "Leske, R. A.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/651ab-hej46", "eprint_id": 54878, "eprint_status": "archive", "datestamp": "2023-08-19 03:46:10", "lastmod": "2023-10-20 20:30:48", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hams-T", "name": { "family": "Hams", "given": "T." } }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Bremerich-M", "name": { "family": "Bremerich", "given": "M." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "deNolfo-G-A", "name": { "family": "deNolfo", "given": "G. A." } }, { "id": "Geier-S", "name": { "family": "Geier", "given": "S." }, "orcid": "0000-0002-3948-9339" }, { "id": "Goebel-H", "name": { "family": "Goebel", "given": "H." } }, { "id": "Gupta-S-K", "name": { "family": "Gupta", "given": "S. K." } }, { "id": "Hof-M", "name": { "family": "Hof", "given": "M." }, "orcid": "0000-0003-2884-3037" }, { "id": "Krizmanic-J-F", "name": { "family": "Krizmanic", "given": "J. F." } }, { "id": "Menn-W", "name": { "family": "Menn", "given": "W." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Ormes-J-F", "name": { "family": "Ormes", "given": "J. F." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Simon-Manfred", "name": { "family": "Simon", "given": "M." } }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } } ] }, "title": "The ISOMAX Magnetic Rigidity Spectrometer", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nPublished - 1999-46.pdf
", "abstract": "The Isotope Magnet Experiment, (ISOMAX), is a balloon-borne superconducting magnetic spectrometer with a time-of-flight system and aerogel Cherenkov counters. Its purpose is to measure the isotopic composition of the light elements (3 < Z < 8) in the cosmic radiation. Particle mass is derived from a velocity vs. magnetic rigidity (momentum/charge) technique. The experiment had its first flight in August 1998. The precision magnetic spectrometer uses advanced drift-chamber tracking and a large, high-field, superconducting magnet. The drift-chamber system consists of three chambers with 24 layers of hexagonal drift cells (16 bending, 8 non-bending) and a vertical extent of 1.4 m. Pure CO2 gas is used. The magnet is a split-pair design with 79 cm diameter coils and a separation of 80 cm. During the 1998 flight, the central field was 0.8 T (60% of the full design field). Presented are results from flight data, for a range of incident particle Z, on the spatial resolution and efficiency of the tracking system, and on the maximum detectable rigidity (MDR) of the spectrometer. For in-flight data, spatial resolutions of 54 mm for Z=2 and 45 mm for Z=4 are obtained. An MDR of 970 GV/c is achieved for Z=2.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150217-133746665", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150217-133746665", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1999-46", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-46.pdf", "url": "https://authors.library.caltech.edu/records/651ab-hej46/files/1999-46.pdf" }, "pub_year": "1999", "author_list": "Hams, T.; Barbier, L. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/agh84-pa702", "eprint_id": 54703, "eprint_status": "archive", "datestamp": "2023-08-19 03:43:38", "lastmod": "2023-10-20 20:07:53", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Steenberg-C-D", "name": { "family": "Steenberg", "given": "C. D." } } ] }, "title": "Composition of Anomalous Cosmic Rays and Other Ions from Voyager Observations", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nWe thank E. Christian for algorithms to analyze the H and He events which do not stop within the CRS detectors (e.g., ~80 MeV/nuc). This work was supported by NASA under contract NAS7-918.\n\nPublished - 1999-09.pdf
", "abstract": "We present energy spectra of eleven cosmic ray elements with energies from rv5 to rv500 MeV/nuc using data\nobtained from the Voyager spacecraft in the outer heliosphere from early 1993 to the end of 1998. The lowenergy intensity increases observed in all these spectra are consistent with the shapes expected to be exhibited\nby primarily singly-charged anomalous cosmic rays (ACRs). One of these elements is Na, which is being reported as a member of the ACR component for the first time. We find that the intensity increase below rv 10 Me V /nuc in the Si spectrum in the outer heliosphere is not dominated by re-accelerated solar wind. There is also evidence for a non-ACR component in the energy spectra of Mg, Si, and S observed at 1 AU by the Wind spacecraft below rv5 MeV/nuc. We see evidence in the energy spectra of Ar in both the inner and outer heliosphere for multiply-charged ACRs above rv360 MeV. Using a fit to the ACR intensities with a full-drift, two-dimensional numerical model of the acceleration and propagation of singly-charged ACRs, we present a table of the relative abundances of the seed particles of eleven elements at the solar wind termination shock.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150211-093110762", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150211-093110762", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-918" } ] }, "other_numbering_system": { "items": [ { "id": "1999-09", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-09.pdf", "url": "https://authors.library.caltech.edu/records/agh84-pa702/files/1999-09.pdf" }, "pub_year": "1999", "author_list": "Cummings, A. C.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/phqca-7bs54", "eprint_id": 54783, "eprint_status": "archive", "datestamp": "2023-08-19 03:44:37", "lastmod": "2023-10-20 20:13:01", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Blake-J-B", "name": { "family": "Blake", "given": "J. B." } }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Dwyer-J-R", "name": { "family": "Dwyer", "given": "J. R." } }, { "id": "Hamilton-D-C", "name": { "family": "Hamilton", "given": "D. C." } }, { "id": "Hill-M-E", "name": { "family": "Hill", "given": "M. E." }, "orcid": "0000-0002-5674-4936" }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Keppller-E", "name": { "family": "Keppller", "given": "E." } }, { "id": "Krimigis-S-M", "name": { "family": "Krimigis", "given": "S. M." }, "orcid": "0000-0003-2781-2386" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Looper-M-D", "name": { "family": "Looper", "given": "M. D." } }, { "id": "Marsden-R-G", "name": { "family": "Marsden", "given": "R. G." } }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Mazur-J-E", "name": { "family": "Mazur", "given": "J. E." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Sanderson-T-R", "name": { "family": "Sanderson", "given": "T. R." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Yanasak-N", "name": { "family": "Yanasak", "given": "N." } } ] }, "title": "Observations of the Solar Modulation of Galactic and Anomalous Cosmic Rays During Solar Minimum", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nSome of this work is supported by NASA contracts NAS7-918 and NASS-30704 and NASA grants NAGS-6912 and NAGS-2963.\n\nPublished - 1999-24.pdf
", "abstract": "From the end of 1997 to early 1998, the relatively steady-state solar-minimum conditions provided an ideal\nperiod to study the solar modulation of anomalous cosmic rays (ACRs) and galactic cosmic rays (GCRs).\nUsing observations of the energy spectra of the most abundant elements (H, He, C, N, 0, and Ne) from an\narray of spacecraft and instruments, we calculate the radial gradients for ACRs and GCRs over a wide range of\nrigidity. The GCR radial gradient is near zero for all rigidities, out to 70 AU. The ACR radial gradient shows\na strong rigidity dependence in the middle heliosphere, which is expected, but the rigidity dependence is not\npresent in the outer heliosphere, and is not obvious in the inner heliosphere.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150212-113747616", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150212-113747616", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-30704" }, { "agency": "NASA", "grant_number": "NAG5-2963" }, { "agency": "NASA", "grant_number": "NAS7-918" } ] }, "other_numbering_system": { "items": [ { "id": "1999-24", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-24.pdf", "url": "https://authors.library.caltech.edu/records/phqca-7bs54/files/1999-24.pdf" }, "pub_year": "1999", "author_list": "Christian, E. R.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/vcq9w-whc32", "eprint_id": 54830, "eprint_status": "archive", "datestamp": "2023-08-19 03:45:24", "lastmod": "2023-10-20 20:27:39", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Lijowski-M", "name": { "family": "Lijowski", "given": "M." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } } ] }, "title": "Time Variations of the Modulation of Anomalous and Galactic Cosmic Rays", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright 1999 University of Utah. Provided by the NASA Astrophysical Data System.\n\nThis research was supported by NASA at the Goddard Space Flight Center, the Jet Propulsion Laboratory, and the California Institute of Technology (under grant NAG5-6912). Climax neutron monitor data are courtesy of the University of Chicago and National Science Foundation grant ATM-9613963.\nACE MAG data were supplied by the ACE MAG team through the ACE Science Center.\n\nPublished - 1999-37.pdf
", "abstract": "Between the launch of the Advanced Composition Explorer (ACE) in 1997 and the end of 1999, the intensities of galactic cosmic rays at 1 AU have dropped almost a factor of 2, and the anomalous cosmic rays have decreased by an even larger amount. The large collecting power of the Cosmic Ray Isotope Spectrometer (CRIS) and the Solar Isotope Spectrometer (SIS) instruments on ACE allow us to investigate the changing modulation on short time scales and at different rigidities. Using anomalous cosmic ray (ACR) and galactic cosmic ray (OCR) intensities of He,\nC, O, Ne, Si, S, and Fe, and energies from ~ 6 MeV/nucleon to ~ 460 MeV/nucleon, we examine the differences between the short term and long term effects. We observe the expected correlation of these intensities with neutron\nmonitor data, but see little correlation of OCR and ACR intensities with the locally measured magnetic field.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150213-105040374", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150213-105040374", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "ATM-9613963" } ] }, "other_numbering_system": { "items": [ { "id": "1999-37", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-37.pdf", "url": "https://authors.library.caltech.edu/records/vcq9w-whc32/files/1999-37.pdf" }, "pub_year": "1999", "author_list": "Christian, E. R.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/ezv0v-95471", "eprint_id": 54772, "eprint_status": "archive", "datestamp": "2023-08-19 03:44:15", "lastmod": "2023-10-20 20:12:17", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Measurements of the Heavy-Ion Isotopic Composition of Solar Energetic Particles", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System\n\nThis research was supported by NASA at the California Institute of Technology (under grant NAG5-6912), the Jet Propulsion Laboratory, and the Goddard Space Flight Center.\n\nPublished - 1999-17.pdf
", "abstract": "Using the Solar Isotope Spectrometer (SIS) on the Advanced Composition Explorer (ACE) spacecraft, we have measured the isotopic composition of ten elements from C to Ni (Z = 6 to 28) at energies of tens of MeV/nucleon in as many as nine solar energetic particle (SEP) events that have occurred since November 1997. We find that the isotopic composition varies dramatically from event to event. For example, the ^(22)Ne/^(20)Ne ratio ranges from ~0.7 to 2 times the solar wind value. The mass fractionation is strongly correlated with the Fe/O and other element abundance ratios, suggesting that the elemental and isotopic fractionation are governed by the same process.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150212-094216395", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150212-094216395", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-17.pdf", "url": "https://authors.library.caltech.edu/records/ezv0v-95471/files/1999-17.pdf" }, "pub_year": "1999", "author_list": "Leske, R. A.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/4kthd-h8326", "eprint_id": 54800, "eprint_status": "archive", "datestamp": "2023-08-19 03:44:47", "lastmod": "2023-10-20 20:14:09", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Lijowski-M", "name": { "family": "Lijowski", "given": "M." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mahan-S-E", "name": { "family": "Mahan", "given": "S. E." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } } ] }, "title": "Measurements of the Elemental Composition of Galactic Cosmic Ray Nuclei with 6\u2264Z\u226428 from the Cosmic Ray Isotope Spectrometer on ACE", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright University of Utah. Provided by the NASA ADS.\n\nClimax neutron monitor data were provided courtesy of the University of Chicago and the National Science Foundation Grant ATM-9613963.\n\nPublished - 1999-26.pdf
", "abstract": "The elemental abundances of galactic cosmic rays (GCR) observed near Earth provide information about the\ncomposition of the cosmic ray sources as well as their propagation history. The Cosmic Ray Isotope Spectrometer\n(CRIS) onboard the Advanced Composition Explorer (ACE) spacecraft measures the elemental and isotopic composition of GCRs with energies '\"\" 50 - 500 Me V /nucleon with high statistical accuracy ('\"\" 5000 stopping nuclei heavier than helium per day) due to its large geometrical factor. The CRIS data are used to derive cosmic ray abundances at the lowest level of solar activity during the last solar minimum. We present elemental abundances measured by CRIS, compare them with previous measurements, and discuss the plausible origins of the disagreement.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150212-163034160", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150212-163034160", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "ATM-9613963" } ] }, "other_numbering_system": { "items": [ { "id": "1999-26", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-26.pdf", "url": "https://authors.library.caltech.edu/records/4kthd-h8326/files/1999-26.pdf" }, "pub_year": "1999", "author_list": "Lijowski, M.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/9aq80-g3g60", "eprint_id": 54879, "eprint_status": "archive", "datestamp": "2023-08-19 03:46:15", "lastmod": "2023-10-20 20:31:12", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Bremerich-M", "name": { "family": "Bremerich", "given": "M." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "Geier-S", "name": { "family": "Geier", "given": "S." }, "orcid": "0000-0002-3948-9339" }, { "id": "Goebel-H", "name": { "family": "Goebel", "given": "H." } }, { "id": "Gupta-S-K", "name": { "family": "Gupta", "given": "S. K." } }, { "id": "Hams-T", "name": { "family": "Hams", "given": "T." } }, { "id": "Hof-M", "name": { "family": "Hof", "given": "M." }, "orcid": "0000-0003-2884-3037" }, { "id": "Krizmanic-J-F", "name": { "family": "Krizmanic", "given": "J. F." } }, { "id": "Menn-W", "name": { "family": "Menn", "given": "W." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Ormes-J-F", "name": { "family": "Ormes", "given": "J. F." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Simon-Manfred", "name": { "family": "Simon", "given": "M." } }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } } ] }, "title": "ISOMAX: Flight Performance of the Isotope Magnet Experiment", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright 1999 University of Utah. Provided by the NASA Astrophysics Data System.\n\nPublished - 1999-47.pdf
", "abstract": "ISOMAX, a new balloon-borne cosmic ray instrument developed to measure the isotopic composition of the light elements in the cosmic radiation, was flown for the first time on August 4-5, 1998, from Lynn Lake, Manitoba, Canada. The main purpose of the ISOMAX program is to obtain the ratio of radioactive 10Be to stable 9Be over a wide range of energies, and consequently a wide range of time-dilation factors. Configured for its first flight, ISOMAX has a geometry factor of 450 cm^2sr and uses a large, high-field,\nsuperconducting magnet in conjunction with state-of-the-art tracking, time-of-flight, and Cherenkov detectors to measure light isotopes with a mass resolution better than 0.25 amu over the ~0.2-1.7 Ge V /nucleon energy range. In the 1998 flight, the maximum detectable rigidity of the ISO MAX magnetic spectrometer was 970 GV/c for He at 60% of the full magnetic field. ISOMAX returned over 16 hours of\ndata from altitudes of more than 36 km as well as considerable data from lower altitudes. In this paper, a\ndescription of the instrument and initial isotopic results will be presented. The performance and results from the individual detector systems are discussed in other papers presented at this meeting.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150217-134538369", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150217-134538369", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-47.pdf", "url": "https://authors.library.caltech.edu/records/9aq80-g3g60/files/1999-47.pdf" }, "pub_year": "1999", "author_list": "Mitchell, J. W.; Barbier, L. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/7fnm1-zy753", "eprint_id": 54819, "eprint_status": "archive", "datestamp": "2023-08-19 03:44:52", "lastmod": "2023-10-20 20:27:04", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Lijowski-M", "name": { "family": "Lijowski", "given": "M." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } } ] }, "title": "Cosmic Ray Source Abundances for 29\u2264Z\u226434", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nThis work was supported by NASA at the California Institute of Technology (under grant NAG5-6912), the Jet Propulsion Laboratory, the Goddard Space Flight Center, and Washington University.\n\nPublished - 1999-27.pdf
", "abstract": "The Cosmic Ray Isotope Spectrometer (CRIS) instrument on board the Advanced Composition Explorer (ACE) spacecraft is making new measurements of nuclides just beyond the iron-nickel peak in the galactic cosmic rays. Isotopes of copper and zinc have been resolved for the first time. Elemental abundances for nuclei with 29\u2264Z\u226434 are reported with good separation between species. Several of these elements are useful for studying fractionation processes which may depend on the first ionization potential or volatility. Source abundances are estimated using a prior propagation calculation and their potential for distinguishing between source models are discussed.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150213-092825276", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150213-092825276", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "1999-27", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-27.pdf", "url": "https://authors.library.caltech.edu/records/7fnm1-zy753/files/1999-27.pdf" }, "pub_year": "1999", "author_list": "George, J. S.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/pgv3b-ybt59", "eprint_id": 54876, "eprint_status": "archive", "datestamp": "2023-08-19 03:46:05", "lastmod": "2023-10-20 20:30:37", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "de-Nolfo-G-A", "name": { "family": "de Nolfo", "given": "G. A." }, "orcid": "0000-0002-3677-074X" }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Bremerich-M", "name": { "family": "Bremerich", "given": "M." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "Geier-S", "name": { "family": "Geier", "given": "S." }, "orcid": "0000-0002-3948-9339" }, { "id": "Goebel-H", "name": { "family": "Goebel", "given": "H." } }, { "id": "Gupta-S-K", "name": { "family": "Gupta", "given": "S. K." } }, { "id": "Hams-T", "name": { "family": "Hams", "given": "T." } }, { "id": "Hof-M", "name": { "family": "Hof", "given": "M." }, "orcid": "0000-0003-2884-3037" }, { "id": "Krizmanic-J-F", "name": { "family": "Krizmanic", "given": "J. F." } }, { "id": "Menn-W", "name": { "family": "Menn", "given": "W." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Ormes-J-F", "name": { "family": "Ormes", "given": "J. F." } }, { "id": "Rasmussen-I-L", "name": { "family": "Rasmussen", "given": "I. L." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Simon-M", "name": { "family": "Simon", "given": "M." } }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } } ] }, "title": "Cosmic Ray Isotope Measurements using the Cherenkov-Rigidity Technique in ISOMAX", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nPublished - 1999-45.pdf
", "abstract": "The Isotope Magnet Experiment, ISOMAX, which had its first flight in August 1998, is designed to measure the isotopic composition of the light elements using a complement of three major detector systems: a magnetic spectrometer, a time-of-flight (TOF) system, and two Cherenkov detectors. ISOMAX measures mass by combining the velocity measurement with charge and magnetic rigidity (momentum/charge) measurements. In the energy range from 1.1 to 1.7 GeV/nucleon, the velocity measurements are provided by two aerogel Cherenkov counters. The aerogel radiators have a nominal index-of-refraction n = 1.14 corresponding to an energy threshold of 1.08 Ge V /nucleon, which complements and extends the energy range covered by the TOF. Combining the velocity measurement with a measurement of rigidity results in a determination of isotope mass with an expected resolution of ::;: 0.25 amu. We present preliminary isotope data.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150217-132931465", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150217-132931465", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1999-45", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D" } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-45.pdf", "url": "https://authors.library.caltech.edu/records/pgv3b-ybt59/files/1999-45.pdf" }, "pub_year": "1999", "author_list": "de Nolfo, G. A.; Barbier, L. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/afsva-fd028", "eprint_id": 54824, "eprint_status": "archive", "datestamp": "2023-08-19 03:45:11", "lastmod": "2023-10-20 20:27:18", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mahan-S-E", "name": { "family": "Mahan", "given": "S.E." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Lijowski-M", "name": { "family": "Lijowski", "given": "M." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } } ] }, "title": "Secondary Electron-Capture Clock Isotopes as a Probe of Reacceleration", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nThis research was supported by NASA at the California Institute of Technology (under grant NAG5-6912), the Jet Propulsion Laboratory, the Goddard Space Flight Center, and\nWashington University.\n\nPublished - 1999-31.pdf
", "abstract": "Cosmic rays that are produced by nuclear interactions during propagation and decay only by electron capture can be used to determine the level of cosmic ray reacceleration that has occurred. The high resolution, large statistical sample of cosmic rays collected by the Cosmic Ray Isotope Spectrometer (CRIS) aboard the Advanced Composition Explorer (ACE) spacecraft provides a data set that allows precision measurements of these isotopic abundances. We discuss electron capture decay, the signatures of\nreacceleration, and the sensitivity with which reacceleration models can be tested.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150213-100300982", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150213-100300982", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "1999-31", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-31.pdf", "url": "https://authors.library.caltech.edu/records/afsva-fd028/files/1999-31.pdf" }, "pub_year": "1999", "author_list": "Mahan, S.E.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/sj2fe-wtq07", "eprint_id": 54709, "eprint_status": "archive", "datestamp": "2023-08-19 03:43:43", "lastmod": "2023-10-20 20:08:18", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Composition of Anomalous Cosmic Rays and Other Ions from Voyager Observations", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System\n\nWe thank E. Christian for algorithms to analyze the H and He events which do not stop within Ule CRS detectors (e.g ~.80 MeV /nuc). This work was supported by NASA under contract NAS7-9 I 8.\n\nPublished - 1999-11.pdf
", "abstract": "We present energy spectra of e leven cosmic ray elements with energies from ~5 to ~500 MeV/nuc using da1<1 obtained from the Voyager spacecraft in the outer heliosphere from early 1993 to the end of 1998. The lowe ncrgy intensity increases observed in all these spectra arc consistent with the shapes expected 10 be exhibited by primarily singly-<:harged anomalous cosmic rays (ACRs). One o f these elements is Na, which is being repo11ed a~ a member of the ACR component for the first time. We find that the tensity increa5e below ~ 10 MeV/nuc in the Si spectrum in the outer heliosphere is not dominated by re-accelerated solar wind. There is also evidence for a non-ACR component in the energy spectra of Mg. Si. and S observed at I AU by the\nWind spacecraft below ~5 MeV/nuc. We see evidence in the energy spectm of Ar in both the inner and outer heliosphere for multiply-charged ACRs above ~360 MeV. Using a fi t to the ACR intensities with a full-drift, two-dimensional numerical model o f the acceleration and propagation of singly-charged ACRs. we present a table of the relative abu ndances of the seed particles of eleven elements m the solar wind 1em1ination shock.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150211-100720063", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150211-100720063", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-918" } ] }, "other_numbering_system": { "items": [ { "id": "1999-11", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-11.pdf", "url": "https://authors.library.caltech.edu/records/sj2fe-wtq07/files/1999-11.pdf" }, "pub_year": "1999", "author_list": "Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/7bg5j-k1c15", "eprint_id": 54745, "eprint_status": "archive", "datestamp": "2023-08-19 03:44:01", "lastmod": "2023-10-20 20:10:52", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "New Measurements of Solar Particle Events Enriched in Heavy Ions", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System\n\nThis work was supported by NASA at the California Institute of Technology (under grant NAG5-6912), the Jet Propulsion Laboratory, and the Goddard Space Flight Center.\n\nPublished - 1999-14.pdf
", "abstract": "The four most heavy-ion-rich of the nine largest solar energetic particle events detected by the Solar Isotope Spectrometer on the ACE, are the focus of this paper. We have used isotopic measurements of Ne to determine the degree of charge/mass fractionation and infer the charge states of C - Ni in these events. The results indicate a source temperature of ~ 4 x 10^6 K; this and the measured abundances suggest that these four events more similar to impulsive events than gradual. Although the ^3He/^4He ratios are not enhanced to the level typical of impulsive events, there are measurable enhancements over typical solar wind values in three of the events.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150211-145949528", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150211-145949528", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "1999-14", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-14.pdf", "url": "https://authors.library.caltech.edu/records/7bg5j-k1c15/files/1999-14.pdf" }, "pub_year": "1999", "author_list": "Cohen, C. M. S.; Christian, E. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/zedfy-5c850", "eprint_id": 54823, "eprint_status": "archive", "datestamp": "2023-08-19 03:45:06", "lastmod": "2023-10-20 20:27:15", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Lijowski-M", "name": { "family": "Lijowski", "given": "M." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Radioactive Clock Isotope Abundance Measurements from the CRIS Experiment aboard the ACE Spacecraft", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nThis research was supported by NASA at California Institute of Technology (grant NAGS-6912), Jet Propulsion Laboratory, Goddard Space Flight Center, and Washington University.\n\nPublished - 1999-32.pdf
", "abstract": "Radioactive cosmic ray nuclei produced by nuclear interactions during cosmic ray propagation through the galaxy can be used to study the mean interstellar gas density in the propagation volume and the time scales associated with the propagation process. The Cosmic Ray Isotope Spectrometer (CRIS) aboard the Advanced Composition Explorer (ACE) has made high-resolution abundance measurements of the beta-decay secondary isotopes ^(10)Be, ^(26)Al, ^(36)Cl, and ^(54)Mn over the energy range 70-400 MeV/nuc. The large geometrical factor of CRIS (~250 cm^2sr) and the 20 months of data collection at near solar minimum conditions have made it possible since launch in August, 1997 to accumulate data samples considerably larger than previous missions. The isotopic abundances derived from these data are presented and compared with previous measurements.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150213-095550927", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150213-095550927", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "1999-32", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-32.pdf", "url": "https://authors.library.caltech.edu/records/zedfy-5c850/files/1999-32.pdf" }, "pub_year": "1999", "author_list": "Binns, W. R.; Yanasak, N. E.; et el." }, { "id": "https://authors.library.caltech.edu/records/p5wr8-srd21", "eprint_id": 54748, "eprint_status": "archive", "datestamp": "2023-08-19 03:44:06", "lastmod": "2023-10-20 20:11:06", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Sollitt-L-S", "name": { "family": "Sollitt", "given": "L. S." } }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Slocum-P-L", "name": { "family": "Slocum", "given": "P. L." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Trans-Nickel Elements in Solar Energetic Particles", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nThis work was supported by NASA under grant NAG5-6012 at the California Institute of Technology, the Jet Propulsion Laboratory, and the Goddard Space Flight Center.\n\nPublished - 1999-15.pdf
", "abstract": "The trans-nickel elements (Z \u2265 29) are some of the rarest in the Solar System; they typically are about\n1/1OOOth to l/lOOOOth as abundant as iron (Z = 26). We present measurements of zinc and other transnickel\nelements in solar energetic particle (SEP) events observed by the Solar Isotope Spectrometer (SIS) in\nthe energy range of 10-75 MeV/nuc. SIS is part of the Advanced Composition Explorer (ACE) spacecraft,\npresently in orbit about the Earth-Sun Ll point. The measured abundances of the trans-nickel elements are\ncompared to tabulated meteoritic and photospheric abundances and to previous SEP measurements. The results\nmay help to assess changes in composition due to SEP acceleration and transport.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150211-163448873", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150211-163448873", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6012" } ] }, "other_numbering_system": { "items": [ { "id": "1999-15", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-15.pdf", "url": "https://authors.library.caltech.edu/records/p5wr8-srd21/files/1999-15.pdf" }, "pub_year": "1999", "author_list": "Sollitt, L. S.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/0czpr-hqe36", "eprint_id": 54714, "eprint_status": "archive", "datestamp": "2023-08-19 03:43:47", "lastmod": "2023-10-20 20:08:41", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Dwyer-J-R", "name": { "family": "Dwyer", "given": "J. R." } }, { "id": "Gold-R-E", "name": { "family": "Gold", "given": "R. E." } }, { "id": "Krimigis-S-M", "name": { "family": "Krimigis", "given": "S. M." }, "orcid": "0000-0003-2781-2386" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mazur-J-E", "name": { "family": "Mazur", "given": "J. E." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "M\u00f6bius-E", "name": { "family": "M\u00f6bius", "given": "E." } }, { "id": "Popecki-M", "name": { "family": "Popecki", "given": "M." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Particle Acceleration and Sources in the November 1997 Solar Energetic Particle Events", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nPublished - 1999-12.pdf
", "abstract": "We repon studies of two large solar energetic panicle (SEP) events on Nov. 4 and 6. 1997 that were observed using advanced energetic panicle detectori; on the ACE and the Wind spacecraft. Both events showed enriched Fe/O, and had a ~1MeV/n ^3He/^4He ratio = 2.1x 10^(-3) , 4 times the coronal value. The Nov. 6 event had exceptionally hard spectra. with much higher intensities of high energy (10s of MeV) particles than the Nov. 4 event, yet below 1MeV per nucleon the intensities in the Nov. 6 event were lower than for\nNov. 4. Strong, complex temporal variations observed for ~120 keV Fe/0 contrasted with only gradual changes of this ratio at ~25 MeV/n. A spectural break was observed in the Nov. 6 event. wherein below a few MeV/n the spectra became harder. Taken together these observations point to different seed and acceleration mechanisms dominating at low and high energies in these events.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150211-103123111", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150211-103123111", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1999-12", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-12.pdf", "url": "https://authors.library.caltech.edu/records/0czpr-hqe36/files/1999-12.pdf" }, "pub_year": "1999", "author_list": "Mason, G. M.; Cohen, C. M. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/p65v7-9vq10", "eprint_id": 54957, "eprint_status": "archive", "datestamp": "2023-08-19 03:46:33", "lastmod": "2023-10-20 21:12:20", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Evans-M", "name": { "family": "Evans", "given": "M." } }, { "id": "Anderson-S", "name": { "family": "Anderson", "given": "S." } }, { "id": "Blackburn-K", "name": { "family": "Blackburn", "given": "K." } }, { "id": "Lazzarini-K", "name": { "family": "Lazzarini", "given": "K." } }, { "id": "Prince-T-A", "name": { "family": "Prince", "given": "Thomas A." }, "orcid": "0000-0002-8850-3627" } ] }, "title": "Empirical Estimates of NS-NS Mergers in the Galaxy", "ispublished": "unpub", "full_text_status": "public", "note": "Published - 1999-62.pdf
", "abstract": "Binary neutron star (NS-NS) eystems with abort orbitel periods evolve by emission of gravitationel waves and eventually coelesce. We e!timate the rate of snch mergers in our Galaxy from the observations of known NS-NS binaries that have merger time scal.ee shorter than the Hubble time. We also explore the semdtivity of the e!timatee to assumptions about the initial position and velocity distributions.", "date": "1999", "date_type": "published", "publisher": "Ed. Fronti\u00e8res", "id_number": "CaltechAUTHORS:20150218-152131862", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150218-152131862", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1999-62", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Tr\u00e2n-Thanh-V\u00e2n-J", "name": { "family": "Tr\u00e2n Thanh V\u00e2n", "given": "Jean" } }, { "id": "Hammer-F", "name": { "family": "Hammer", "given": "F." } }, { "id": "Thuan-T-X", "name": { "family": "Thuan", "given": "T. X." } }, { "id": "Cayatte-V", "name": { "family": "Cayatte", "given": "V." } }, { "id": "Guiderdoni-B", "name": { "family": "Guiderdoni", "given": "B." } } ] }, "primary_object": { "basename": "1999-62.pdf", "url": "https://authors.library.caltech.edu/records/p65v7-9vq10/files/1999-62.pdf" }, "pub_year": "1999", "author_list": "Evans, M.; Anderson, S.; et el." }, { "id": "https://authors.library.caltech.edu/records/p49j0-gq014", "eprint_id": 54834, "eprint_status": "archive", "datestamp": "2023-08-19 03:45:38", "lastmod": "2023-10-20 20:27:52", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Tsao-C-H", "name": { "family": "Tsao", "given": "C.H." } }, { "id": "Silberberg-R", "name": { "family": "Silberberg", "given": "R." } }, { "id": "Barghouty-A-F", "name": { "family": "Barghouty", "given": "A. F." } } ] }, "title": "Updated Semiempirical Cross Sections for Cosmic Rays Propagation", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nThe work has been supported by NASA grants NAG5-5053 and NAG5-5165, and NASA-JOVE grant no. NAG8- 1208 (AFB). The authors are also grateful for the use of computer facilities at the Na val Research Laboratory, Washington, D.C.\n\nPublished - 1999-40.pdf
", "abstract": "High precision cross sections estimates are crucial to help infer the source abundance of elements and isotopes that have large secondary components in the arriving cosmic-ray abundances, e.g., N, Na, Al and P. We propose here correction factors to further refine our recent semiempirical cross sections estimates. Factors for\nelements that are nearly purely secondary, e.g, B and F, are also proposed for improved propagation calculations.\nWe also point to some inconsistencies in the measured cross sections. The nucleus-nucleus component, including scaling factors, as well as a non-nuclear contribution to the inelastic cross section therein are also discussed.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150213-113637709", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150213-113637709", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-5053" }, { "agency": "NASA", "grant_number": "NAG5-5165" }, { "agency": "NASA-JOVE", "grant_number": "NAG8-1208" } ] }, "other_numbering_system": { "items": [ { "id": "1999-40", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-40.pdf", "url": "https://authors.library.caltech.edu/records/p49j0-gq014/files/1999-40.pdf" }, "pub_year": "1999", "author_list": "Tsao, C.H.; Silberberg, R.; et el." }, { "id": "https://authors.library.caltech.edu/records/vx5eh-15c76", "eprint_id": 54820, "eprint_status": "archive", "datestamp": "2023-08-19 03:44:57", "lastmod": "2023-10-20 20:27:07", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Lijowski-M", "name": { "family": "Lijowski", "given": "M." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } } ] }, "title": "The Time Delay between Nucleosynthesis and Acceleration Based on ACE Measurements of Primary Electron-Capture Nuclides", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nThis research was supported by NASA at the California Institute of Technology (under grant NAG5-6912), the Jet Propulsion Laboratory, the Goddard Space Flight Center,\nand Washington University.\n\nPublished - 1999-29.pdf
", "abstract": "Supernovae should produce the radioactive nuclide ^(59)Ni, and in the ejecta of the explosions these particles will decay by electron capture with a halflife of 7.6 x 10^5 yr to produce ^(59)Co. However, if the ^(59)Ni nuclei are accelerated to cosmic-ray energies on a time scale short compared to this halflife, they are stripped of their electrons and decay is prevented. Thus the abundances of ^(59)Ni and ^(59)Co can be used to determine whether the time between nucleosynthesis and cosmic-ray acceleration is\nshort or long compared to the 59Ni halflife (Soutoul, Casse, & Juliusson 1978). We have used the Cosmic Ray Isotope Spectrometer (CRIS) on the Advanced Composition Explorer (ACE) to measure the abundances of 59Ni and 59Co in galactic cosmic rays, and find that the data are consistent with complete decay of 59Ni indicating a time delay 2 10^5 yr. We present the observations and discuss\ntheir significance for models of cosmic ray origin and acceleration.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150213-093733570", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150213-093733570", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "1999-29", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-29.pdf", "url": "https://authors.library.caltech.edu/records/vx5eh-15c76/files/1999-29.pdf" }, "pub_year": "1999", "author_list": "Mewaldt, R. A.; Wiedenbeck, M. E.; et el." }, { "id": "https://authors.library.caltech.edu/records/fk0sz-qtj62", "eprint_id": 54884, "eprint_status": "archive", "datestamp": "2023-08-19 03:46:29", "lastmod": "2023-10-20 20:31:32", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "Adams-J-H", "name": { "family": "Adams", "given": "J.H." } }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "deNolfo-G-A", "name": { "family": "deNolfo", "given": "G. A." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Link-J-T", "name": { "family": "Link", "given": "J. T." } }, { "id": "Menn-W", "name": { "family": "Menn", "given": "W." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Simon-M", "name": { "family": "Simon", "given": "M." } }, { "id": "Sposato-S-H", "name": { "family": "Sposato", "given": "S. H." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "The Charge (Z) Identification Module (ZIM) for ACCESS: An Instrument Calibration using 10.6 GeV/nucleon 79AU", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nPublished - 1999-50.pdf
", "abstract": "We report the results of an accelerator calibration of detectors planned for use in the ZIM experiment for\nACCESS. The experiment utilizes silicon detectors to measure dE/dx, and aerogel and acrylic Cherenkov\ncounters for velocity measurements. For a 79Au beam with energy 10.6 GeV/nucleon, we obtain resolution in charge for the silicon, acrylic Cherenkov, and aerogel Cherenkov of 0.20, 0.22, and 0.45 cu respectively.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150217-142509052", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150217-142509052", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1999-50", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-50.pdf", "url": "https://authors.library.caltech.edu/records/fk0sz-qtj62/files/1999-50.pdf" }, "pub_year": "1999", "author_list": "Cummings, J. R.; Adams, J.H.; et el." }, { "id": "https://authors.library.caltech.edu/records/mrv4j-45v78", "eprint_id": 54962, "eprint_status": "archive", "datestamp": "2023-08-19 03:46:38", "lastmod": "2023-10-20 21:12:35", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mahan-S-E", "name": { "family": "Mahan", "given": "S. E." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "George-J-S", "name": { "family": "George", "given": "J. S." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Lijowski-M", "name": { "family": "Lijowski", "given": "M." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Yanasak-N-E", "name": { "family": "Yanasak", "given": "N. E." } } ] }, "title": "Secondary Electron-Capture Clock Isotopes as a Probe of Reacceleration", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nThis research was supported by NASA at the California Institute of Technology (under grant NAG5-6912), the Jet Propulsion Laboratory, the Goddard Space Flight Center, and\nWashington University.\n\nPublished - 1999-64.pdf
", "abstract": "Cosmic rays that are produced by nuclear interactions during propagation and decay only by electroncapture can be used to determine the level of cosmic ray reacceleration that has occurred. The high resolution, large statistical sample of cosmic rays collected by the Cosmic Ray Isotope Spectrometer (CRIS) aboard the Advanced Composition Explorer (ACE) spacecraft provides a data set that allows precision measurements of these isotopic abundances. We discuss electron capture decay, the signatures of\nreacceleration, and the sensitivity with which reacceleration models can be tested.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150218-154217768", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150218-154217768", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "1999-64", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-64.pdf", "url": "https://authors.library.caltech.edu/records/mrv4j-45v78/files/1999-64.pdf" }, "pub_year": "1999", "author_list": "Mahan, S. E.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/54h88-06j15", "eprint_id": 54883, "eprint_status": "archive", "datestamp": "2023-08-19 03:46:24", "lastmod": "2023-10-20 20:31:29", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Link-J-T", "name": { "family": "Link", "given": "J. T." } }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "deNolfo-G-A", "name": { "family": "deNolfo", "given": "G. A." } }, { "id": "Dowkontt-P", "name": { "family": "Dowkontt", "given": "P." } }, { "id": "Epstein-J", "name": { "family": "Epstein", "given": "J." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J", "name": { "family": "Mitchell", "given": "J." } }, { "id": "Olevitch-M-A", "name": { "family": "Olevitch", "given": "M. A." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Sposato-S-H", "name": { "family": "Sposato", "given": "S. H." } }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } } ] }, "title": "The Trans-Iron Galactic Element Recorder for the Ultra-Long Duration Balloon Project Demo 2000", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nPublished - 1999-49.pdf
", "abstract": "The Trans-Iron Galactic Element Recorder (TIGER) for the Ultra-Long Duration Balloon project Demo2000 (TD2K) is designed to measure the abundances of all elements in the Galactic Cosmic Rays (GCRs) with 26 \u2264 Z \u2264 40 and energies above 300 MeV/nucleon. TD2K's flight is expected to approach 100 days in length. Launch will be from New Zealand in 2001. TD2K will have sufficiently good\nresolution to measure the individual abundances of the odd-Z elements between Z=26 and Z=40 for the first time. Measurements of odd-Z nuclei are important for distinguishing between the effects of first ionization\npotential and volatility in the injection process for ultraheavy GCRs, for models of nucleosynthesis, and constraining models of cosmic-ray propagation at short pathlengths. TD2K uses a combination of Cherenkov and scintillation counters to determine the atomic number and energy of incident cosmic rays, and a coded cintillating-fiber hodoscope for trajectory corrections. TD2K is an improved version of the TIGER instrument flown in 1997, results from which are reported at this\nconference (Sposato et al., 1999). We will present the status of the TD2K instrument and of the ULDB program as it affects the Demo 2000 flight.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150217-141245529", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150217-141245529", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1999-49", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-49.pdf", "url": "https://authors.library.caltech.edu/records/54h88-06j15/files/1999-49.pdf" }, "pub_year": "1999", "author_list": "Link, J. T.; Barbier, L. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/adxf5-4bb03", "eprint_id": 54881, "eprint_status": "archive", "datestamp": "2023-08-19 03:46:20", "lastmod": "2023-10-20 20:31:19", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Sposato-S-H", "name": { "family": "Sposato", "given": "S. H." } }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "deNolfo-G-A", "name": { "family": "deNolfo", "given": "G. A." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } } ] }, "title": "The Trans-Iron Galactic Element Recorder (TIGER): A Balloon-borne Cosmic-Ray Experiment", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nPublished - 1999-48.pdf
", "abstract": "TIGER is a balloon-borne cosmic-ray experiment designed to measure the elemental abundances of Galactic\nCosmic Rays (GCRs) in the charge range 26", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150217-140314289", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150217-140314289", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1999-48", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-48.pdf", "url": "https://authors.library.caltech.edu/records/adxf5-4bb03/files/1999-48.pdf" }, "pub_year": "1999", "author_list": "Sposato, S. H.; Barbier, L. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/p4cpx-h3277", "eprint_id": 54781, "eprint_status": "archive", "datestamp": "2023-08-19 03:44:33", "lastmod": "2023-10-20 20:12:52", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Selesnick-R-S", "name": { "family": "Selesnick", "given": "R. S." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Long-Term Temporal Behavior of Interplanetary and Trapped Anomalous Cosmic Rays", "ispublished": "unpub", "full_text_status": "public", "note": "This work was supported by NASA under grants NAGS-2963 and NAGS-6912 at Caltech, and at the Jet Propulsion Laboratory and the Goddard Space Flight Center.\n\nPublished - 1999-23.pdf
", "abstract": "New measurements of the long-term temporal history of anomalous cosmic rays (ACRs) at 1\nAU are presented, based on data from SAMPEX and ACE. Over the period from 1992 to 1997 the\ninterplanetary intensity of 8 to 27 MeV/nuc ACR oxygen increased by a factor of -5 as solar\nminimum approached. The intensity of ACR oxygen trapped in the Earth's magnetosphere\nshowed a corresponding time history. Early in 1998 both the interplanetary and trapped intensities\nsuddenly decreased with the onset of solar activity leading to the next solar maximum. We discuss\nthe relation of the time-delay between changes in the interplanetary and trapped fluxes, possible\nsolar/interplanetary causes of these changes, and the lifetime of trapped ACRs in Earth's\nmagnetosphere.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150212-105955417", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150212-105955417", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGS-2963" }, { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "1999-23", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1999-23.pdf", "url": "https://authors.library.caltech.edu/records/p4cpx-h3277/files/1999-23.pdf" }, "pub_year": "1999", "author_list": "Leske, R. A.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/e9y5e-tnj53", "eprint_id": 54871, "eprint_status": "archive", "datestamp": "2023-08-19 03:46:01", "lastmod": "2023-10-20 20:30:20", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Geier-S", "name": { "family": "Geier", "given": "S." }, "orcid": "0000-0002-3948-9339" }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Bremerich-M", "name": { "family": "Bremerich", "given": "M." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "deNolfo-G-A", "name": { "family": "deNolfo", "given": "G. A." } }, { "id": "Goebel-H", "name": { "family": "Goebel", "given": "H." } }, { "id": "Gupta-S-K", "name": { "family": "Gupta", "given": "S. K." } }, { "id": "Hams-T", "name": { "family": "Hams", "given": "T." } }, { "id": "Krizmanic-J-F", "name": { "family": "Krizmanic", "given": "J. F." } }, { "id": "Menn-W", "name": { "family": "Menn", "given": "W." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Ormes-J-F", "name": { "family": "Ormes", "given": "J. F." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Simon-M", "name": { "family": "Simon", "given": "M." } }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } } ] }, "title": "In-flight Performance of the ISOMAX TOF", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nPublished - 1999-44.pdf
", "abstract": "A state-of-the-art time-of-flight (TOF) system has been developed for the ISOMAX balloon-borne cosmic ray instrument. ISOMAX was built to measure the isotopic composition of the light elements in the cosmic rays,\n(3", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150217-113409550", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150217-113409550", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1999-44", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-44.pdf", "url": "https://authors.library.caltech.edu/records/e9y5e-tnj53/files/1999-44.pdf" }, "pub_year": "1999", "author_list": "Geier, S.; Barbier, L. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/hjems-gd185", "eprint_id": 54833, "eprint_status": "archive", "datestamp": "2023-08-19 03:45:33", "lastmod": "2023-10-20 20:27:49", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Moraal-H", "name": { "family": "Moraal", "given": "H." } }, { "id": "Steenberg-C-D", "name": { "family": "Steenberg", "given": "C. D." } } ] }, "title": "Basic Properties of Anomalous Cosmic Ray Spectra", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nPublished - 1999-39.pdf
", "abstract": "The anomalous cosmic ray component is a much more sensitive probe of modulation/acceleration in the heliosphere than galactic cosmic rays. Based on one-dimensional, no-drift solutions of the transport equation, we formulate several properties that govern their acceleration and modulation.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150213-110756759", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150213-110756759", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1999-39", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-39.pdf", "url": "https://authors.library.caltech.edu/records/hjems-gd185/files/1999-39.pdf" }, "pub_year": "1999", "author_list": "Moraal, H. and Steenberg, C. D." }, { "id": "https://authors.library.caltech.edu/records/a8mw3-h4835", "eprint_id": 54836, "eprint_status": "archive", "datestamp": "2023-08-19 03:45:47", "lastmod": "2023-10-20 20:27:58", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Barghouty-A-F", "name": { "family": "Barghouty", "given": "A. F." } } ] }, "title": "Hydrogen-Impact Ionization Cross Sections in the Bates-Griffing Formalism", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nWork has been supported by NSF grant no. 9810653 and NASA-JOVE grant no. NAG8-1208.\n\nPublished - 1999-41.pdf
", "abstract": "We describe a simple and effective procedure to estimate the hydrogen-impact ionization cross sections over an energy range relevant to studies of ACR heliospheric transport. The procedure is valid in the first Born\napproximation using known or estimated electron-impact cross sections. The original Bates-Griffing relation\nbetween the two sets of cross sections is reexpressed and a correction factor due to multiple transitions is\nintroduced. Sample cross sections calculations for He, C, 0 and Ne collisions with hydrogen are presented.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150213-130840905", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150213-130840905", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "9810653" }, { "agency": "NASA-JOVE", "grant_number": "NAG8-1208" } ] }, "other_numbering_system": { "items": [ { "id": "1999-41", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-41.pdf", "url": "https://authors.library.caltech.edu/records/a8mw3-h4835/files/1999-41.pdf" }, "pub_year": "1999", "author_list": "Barghouty, A. F." }, { "id": "https://authors.library.caltech.edu/records/t255g-my971", "eprint_id": 54837, "eprint_status": "archive", "datestamp": "2023-08-19 03:45:52", "lastmod": "2023-10-20 20:28:00", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Barghouty-A-F", "name": { "family": "Barghouty", "given": "A. F." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "Simulation of the Charge State and Energy Spectrum of Solar Energetic Iron", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nWork has been supported by NSF grant no. 9810653 and ASA-JOVE grant no. NAG8-1208 (AFB), and by NASA grants NAS5-30704 and NAGS-6912 at Caltech.\n\nPublished - 1999-43.pdf
", "abstract": "In a nonequilibrium model that includes shock-induced acceleration, we simulate the charge state and energy spectra of solar energetic iron. In this model the mean charge state exhibits an energy dependence seen in recent large solar events by SAMPEX and ACE. The simulated energy spectrum is a power-law and charge distributions are roughly Gaussians. The density distributions are smooth in charge-momentum space, suggesting that the accelerated ion retains no memory of its initial charge as well as momentum conditions.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150213-133408584", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150213-133408584", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "9810653" }, { "agency": "NASA-JOVE", "grant_number": "NAG8-1208" }, { "agency": "NASA", "grant_number": "NAS5-30704" }, { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "1999-43", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-43.pdf", "url": "https://authors.library.caltech.edu/records/t255g-my971/files/1999-43.pdf" }, "pub_year": "1999", "author_list": "Barghouty, A. F. and Mewaldt, R. A." }, { "id": "https://authors.library.caltech.edu/records/wesmb-av949", "eprint_id": 54700, "eprint_status": "archive", "datestamp": "2023-08-19 03:43:34", "lastmod": "2023-10-20 20:07:45", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Steenberg-C-D", "name": { "family": "Steenberg", "given": "C. D." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Drift Calculations on the Modulation of Anomalous Cosmic Rays During the 1998 Solar Minimum Period", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nSupported by NASA at Caltech (contract NAS7-9l 8).\n\nPublished - 1999-07.pdf
", "abstract": "We present full-drift solutions of the two-dimensional cosmic ray transport equation in an ongoing study to explain ACR observations made in the outer heliosphere. Calculated spectra are compared to 1998 ACR H, He, 0, N, and Ne observations from Voyager I and 2. It is found that the modulation is dominated by diffusion at the spacecraft positions and that the spectra of all the above species can be reasonably explained using a single set of modulation parameters. These include diffusion mean free paths with a magnitude significantly smaller at the shock than at the spacecraft positions.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150211-091921800", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150211-091921800", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-918" } ] }, "other_numbering_system": { "items": [ { "id": "1999-07", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-07.pdf", "url": "https://authors.library.caltech.edu/records/wesmb-av949/files/1999-07.pdf" }, "pub_year": "1999", "author_list": "Steenberg, C. D.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/2n1n6-4n902", "eprint_id": 54827, "eprint_status": "archive", "datestamp": "2023-08-19 03:45:20", "lastmod": "2023-10-20 20:27:30", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "Re-Accelerated Solar Wind - An Additional Source of Anomalous Cosmic Rays?", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nI appreciate conversations with A. C. Cummings (who also provided numerical values for the Voyager data) and with N. Barghouty, P. C. Frisch, M. G. Baring, and J. R. Jokipii. This\nwork was supported by NASA under NASS-30704 and NAGW-1919.\n\nPublished - 1999-36.pdf
", "abstract": "We consider the acceleration of solar, interplanetary, and interstellar particles at the solar-wind termination shock, predict expected composition and energy spectra, and discuss possible observable consequences. The acceleration of a small fraction of solar wind ions incident on the\ntermination shock may explain low-energy enhancements in the spectra of several elements observed by Voyager beyond ~ 60 AU. Other possible particle sources are also discussed.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150213-102518440", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150213-102518440", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-30704" }, { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-36.pdf", "url": "https://authors.library.caltech.edu/records/2n1n6-4n902/files/1999-36.pdf" }, "pub_year": "1999", "author_list": "Mewaldt, R. A." }, { "id": "https://authors.library.caltech.edu/records/xzyrb-t2c96", "eprint_id": 54825, "eprint_status": "archive", "datestamp": "2023-08-19 03:45:15", "lastmod": "2023-10-20 20:27:21", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "Hemple-S-J", "name": { "family": "Hemple", "given": "S. J." } }, { "id": "Sears-S-R", "name": { "family": "Sears", "given": "S. R." } } ] }, "title": "ACE Data from the ACE Science Center", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Utah. Provided by the NASA Astrophysics Data System.\n\nThe web interface to HDF data files used at the ASC is a customized version of the DIAL Experimental Data Server (http://dial.gsfc.nasa.gov), jointly developed by the National Center for Supercomputing Applications and Raytheon ITSS, under contract to NASA/GSFC. This work was supported by NASA under contract NAGS-69I2.\n\nPublished - 1999-33.pdf
", "abstract": "The purpose of the ACE Science Center (ASC) is to perform level 1 processing of data from the nine science instruments aboard the Advanced Composition Explorer (ACE) spacecraft and to facilitate access to all ACE data by both the instrument investigators and the space physics community. We describe the ACE data products available from the ASC and the methods by which users may access the data.", "date": "1999", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20150213-102003558", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150213-102003558", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-6912" } ] }, "other_numbering_system": { "items": [ { "id": "1999-33", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kieda-D", "name": { "family": "Kieda", "given": "D." } }, { "id": "Salamon-M", "name": { "family": "Salamon", "given": "M." } }, { "id": "Dingus-B", "name": { "family": "Dingus", "given": "B." } } ] }, "primary_object": { "basename": "1999-33.pdf", "url": "https://authors.library.caltech.edu/records/xzyrb-t2c96/files/1999-33.pdf" }, "pub_year": "1999", "author_list": "Davis, A. J.; Hemple, S. J.; et el." }, { "id": "https://authors.library.caltech.edu/records/hkzt2-kvt34", "eprint_id": 84238, "eprint_status": "archive", "datestamp": "2023-08-19 03:31:40", "lastmod": "2024-01-14 19:30:11", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Bloser-P-F", "name": { "family": "Bloser", "given": "P." } }, { "id": "Grindlay-J-E", "name": { "family": "Grindlay", "given": "J." }, "orcid": "0000-0002-1323-5314" }, { "id": "Narita-Tomohiko", "name": { "family": "Narita", "given": "T." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "F." }, "orcid": "0000-0003-2992-8024" } ] }, "title": "CdZnTe background measurement at balloon altitudes with an active BGO shield", "ispublished": "unpub", "full_text_status": "public", "keywords": "CdZnTe, background, shielding, balloon flights, hard X-ray astronomy, instrumentation", "note": "\u00a9 1998 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nWe thank B. Matthews for work on the CdZnTe detector, T. Gauron and J. Grenzke for work on the flight electronics and software, and K. Lum for work on the data analysis software. This work was supported in part by NASA grant NAG5-5103. P. Bloser acknowledges support from NASA GSRP grant NGT5-50020.\n\nPublished - 186.pdf
", "abstract": "We report results of an experiment conducted in May 1997 to measure CdZnTe background and background reduction schemes in space flight conditions similar to those of proposed hard x-ray astrophysics missions. A 1 cm^2 CdZnTe detector was placed adjacent to a thick BGO anticoincidence shield and flown piggy backed onto the EXITE2 scientific balloon payload. The planar shield was designed to veto background counts produced by local gamma-ray production in passive material and neutron interactions in the detector. The CdZnTe and BGO were partially surrounded by a Pb-Sn-Cu shield to approximate the grammage of an x-ray collimator, although the field of view was still approximately 2 \u03c0 sr. At an altitude of 127000 feet we find a reduction in background by a factor of 6 at 100 keV. The non-vetoed background is 9 X 10^(-4) cts cm^(-2) s^(-1) at 100 keV, about a factor of 2 higher than that of the collimated (4.5\u00b0 FWHM) EXITE2 phoswich detector. We compare our recorded spectrum with that expected from simulations using GEANT and find agreement within a factor of 2 between 30 and 300 keV. We also compare our results with those of previous experiments using passive lead and active NaI shields, and discus possible active shielding schemes in future astronomy mission employing large arrays of CdZnTe detectors.", "date": "1998-11-10", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "place_of_pub": "Bellingham, WA", "pagerange": "186-196", "id_number": "CaltechAUTHORS:20180110-155845293", "isbn": "9780819429001", "book_title": "EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy IX", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180110-155845293", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-5103" }, { "agency": "NASA Graduate Student Research Fellowship", "grant_number": "NGT5-50020" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Siegmund-O-H-W", "name": { "family": "Siegmund", "given": "Oswald H. W." } }, { "id": "Gummin-M-A", "name": { "family": "Gummin", "given": "Mark A." } } ] }, "doi": "10.1117/12.330275", "primary_object": { "basename": "186.pdf", "url": "https://authors.library.caltech.edu/records/hkzt2-kvt34/files/186.pdf" }, "pub_year": "1998", "author_list": "Bloser, P.; Grindlay, J.; et el." }, { "id": "https://authors.library.caltech.edu/records/y3ac7-ck543", "eprint_id": 88383, "eprint_status": "archive", "datestamp": "2023-08-19 03:31:53", "lastmod": "2024-01-14 20:32:05", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Craig-W-W", "name": { "family": "Craig", "given": "William W." } }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "Finn E." }, "orcid": "0000-0001-5679-1946" }, { "id": "Decker-T-R", "name": { "family": "Decker", "given": "Todd" } }, { "id": "Hailey-C-J", "name": { "family": "Hailey", "given": "Charles J." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Hill-R-M", "name": { "family": "Hill", "given": "Randal M." } }, { "id": "Jimenez-Garate-M-A", "name": { "family": "Jimenez-Garate", "given": "Mario" } }, { "id": "Mao-Peter-H", "name": { "family": "Mao", "given": "Peter" } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "Steven" } } ] }, "title": "Hard x-ray optics for the HEFT balloon-borne payload: prototype design and status", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1998 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nThis work was supported under NASA grant NAG5-5129. M. Stern has helped to refine the thermal forming process and K. Knox has helped quantify and study the process.\n\nPublished - 112.pdf
", "abstract": "We report on the current status and performance of prototype hard x-ray optics we are producing for use on the high energy focusing telescope (HEFT) experiment. The baseline substrates are thermally formed glass mirrors that are overcoated with multilayers to provide good performance throughout the 20-80 keV bandpass. Progress made in the thermal forming process as well as in the multilayer performance has allowed production of optics that meet or exceed all HEFT requirements. We present metrology on the substrates and result from x-ray characterization. A novel mounting scheme for the individual telescope shells is currently being tested. If successful the mounting technique will produce a monolithic, extremely stiff and robust optic.", "date": "1998-11-10", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "112-120", "id_number": "CaltechAUTHORS:20180731-114052914", "isbn": "9780819429001", "book_title": "EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy IX", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180731-114052914", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-5129" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Siegmund-O-H-W", "name": { "family": "Siegmund", "given": "Oswald H. W." } }, { "id": "Gummin-M-A", "name": { "family": "Gummin", "given": "Mark A." } } ] }, "doi": "10.1117/12.330269", "primary_object": { "basename": "112.pdf", "url": "https://authors.library.caltech.edu/records/y3ac7-ck543/files/112.pdf" }, "pub_year": "1998", "author_list": "Craig, William W.; Christensen, Finn E.; et el." }, { "id": "https://authors.library.caltech.edu/records/6pgaj-kp121", "eprint_id": 53175, "eprint_status": "archive", "datestamp": "2023-08-19 03:31:13", "lastmod": "2024-01-13 16:13:23", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Binns-Walter-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-Eric-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cook-Walter-R-III", "name": { "family": "Cook", "given": "W. R." } }, { "id": "Cummings-Alan-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Dougherty-Brian-L", "name": { "family": "Dougherty", "given": "B. L." } }, { "id": "Dowkontt-P-F", "name": { "family": "Dowkontt", "given": "P. F." } }, { "id": "Epstein-J-E", "name": { "family": "Epstein", "given": "J. E." } }, { "id": "Kink-P-L", "name": { "family": "Kink", "given": "P. L." } }, { "id": "Kecman-Branislav", "name": { "family": "Kecman", "given": "B." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Leske-Richard-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Lijowski-M-L", "name": { "family": "Lijowski", "given": "M." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Olevitch-M-A", "name": { "family": "Olevitch", "given": "M. A." } }, { "id": "von-Rosenvinge-Tycho-T", "name": { "family": "von Rosenvinge", "given": "T. T." }, "orcid": "0000-0001-7320-4141" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Thayer-M-R", "name": { "family": "Thayer", "given": "M. R." } }, { "id": "Wiedenbeck-Mark-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Scintillating Fibers and Their Use in the Cosmic Ray Isotope Spectrometer (CRIS) on the Advanced Composition Explorer (ACE)", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1998 AIP Publishing. \n\nThis work was supported by NASA Contract NAS5-32626 and Grant #NAG-6912.\n\nPublished - 1.56988.pdf
", "abstract": "The Cosmic Ray Isotope Spectrometer (CRIS) experiment was launched aboard the NASA Advanced Composition Explorer satellite on August 25, 1997. The experimental objective of CRIS is to measure the isotopic composition of galactic cosmic ray nuclei for elements with charge 3 < Z < 28 over the energy range \u223c50\u2013500 MeV/nuc. The instrument consists of a scintillating fiber hodoscope to determine particle trajectory, and four stacks of silicon wafers for multiple dE/dx and E\u209c\u2092\u209c measurements. This instrument is the first to use scintillating fibers in space. The CRIS instrument has a large geometrical factor of \u223c250 cm\u00b2\u200asr. The spatial resolution obtained by the fiber hodoscope is \u223c100 \u03bcm. The mass resolution achieved is \u223c0.12 amu for Carbon and 0.30 amu for the heaviest isotopes measured. Mass histograms of selected isotopes are presented.", "date": "1998-11-09", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "519-526", "id_number": "CaltechAUTHORS:20150105-111120039", "isbn": "1-56396-792-8", "book_title": "The SCIFI97 conference on scintillating and fiber detectors", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150105-111120039", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS 5-32626" }, { "agency": "NASA", "grant_number": "NAG-6912" } ] }, "other_numbering_system": { "items": [ { "id": "1998-03", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Poole-Patti-E", "name": { "family": "Poole", "given": "Patti A." } }, { "id": "Ruchti-Randal-C", "name": { "family": "Ruchti", "given": "Randal C." } }, { "id": "Bross-Alan-D", "name": { "family": "Bross", "given": "Alan D." } }, { "id": "Wayne-Mitchell-R", "name": { "family": "Wayne", "given": "Mitchell R." } } ] }, "doi": "10.1063/1.56988", "primary_object": { "basename": "1.56988.pdf", "url": "https://authors.library.caltech.edu/records/6pgaj-kp121/files/1.56988.pdf" }, "pub_year": "1998", "author_list": "Binns, W. R.; Christian, E. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/ag03m-qje97", "eprint_id": 90789, "eprint_status": "archive", "datestamp": "2023-08-19 03:30:46", "lastmod": "2024-01-14 21:10:02", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Goldstein-Bruce-E", "name": { "family": "Goldstein", "given": "Bruce E." } }, { "id": "Buffington-Andrew", "name": { "family": "Buffington", "given": "Andrew" } }, { "id": "Cummings-Alan-C", "name": { "family": "Cummings", "given": "Alan C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Fisher-Richard-R", "name": { "family": "Fisher", "given": "Richard R." } }, { "id": "Jackson-Bernard-V", "name": { "family": "Jackson", "given": "Bernard V." } }, { "id": "Liewer-Paulett-C", "name": { "family": "Liewer", "given": "Paulett C." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "Richard A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Neugebauer-Marcia", "name": { "family": "Neugebauer", "given": "Marcia" } } ] }, "title": "Solar Polar Sail mission: report of a study to put a scientific spacecraft in a circular polar orbit about the sun", "ispublished": "unpub", "full_text_status": "public", "keywords": "solar sail, sail, solar wind, spacecraft, solar polar orbit, corona", "note": "\u00a9 1998 Society of Photo-optical Instrumentation Engineers (SPIE). \n\nEngineering support was provided to the study by R. A. Wallace, J. Ayon, C. E. Garner, C. Sauer, C.-W. Yen, and the Advanced Projects Design Team (Team X) led by R. Bennett. A portion of this work was conducted at the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.\n\nPublished - 65.pdf
", "abstract": "The Solar Polar Sail Mission uses solar-sail propulsion to place a spacecraft in a circular orbit 0.48 Au from the Sun with an inclination of 90 degrees. The spacecraft's orbit around the Sun is in 3:1 resonance with Earth phased such that the Earth-Sun-spacecraft angle range from 30 degrees to 150 degrees. The polar view will further our understanding of: (1) the global structure and evolution of the corona, (2) the initiation, evolution, and propagation of coronal mass ejections; (3) the acceleration of the solar wind; (4) the interactions of rotation, magnetic fields, and convection within the Sun; (5) the acceleration and propagation of energetic particles; and (6) the rate of angular momentum loss by the Sun. Candidate imaging instruments are a coronagraph, an all-sky imager for following mass ejections and interaction regions from the Sun to 1 AU, and a disk imager. A lightweight package of fields and particle instruments is included. A mission using a 158 m square sail with an effective areal density of 6 g/m^2 would cost approximately $250-300M (FY97) for all mission phases, including the launch vehicle. This mission depends on the successful development and demonstration of solar-sail propulsion.", "date": "1998-11-02", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "65-76", "id_number": "CaltechAUTHORS:20181109-093937080", "isbn": "9780819428974", "book_title": "Missions to the Sun II", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20181109-093937080", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA/JPL/Caltech" } ] }, "other_numbering_system": { "items": [ { "id": "1998-02", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Korendyke-C-M", "name": { "family": "Korendyke", "given": "Clarence M." } } ] }, "doi": "10.1117/12.330265", "primary_object": { "basename": "65.pdf", "url": "https://authors.library.caltech.edu/records/ag03m-qje97/files/65.pdf" }, "pub_year": "1998", "author_list": "Goldstein, Bruce E.; Buffington, Andrew; et el." }, { "id": "https://authors.library.caltech.edu/records/45274-r1897", "eprint_id": 55568, "eprint_status": "archive", "datestamp": "2023-08-19 03:08:11", "lastmod": "2024-01-13 16:16:45", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cook-W-R", "name": { "family": "Cook", "given": "Walter R." } }, { "id": "Burnham-J-A", "name": { "family": "Burnham", "given": "Jill A." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" } ] }, "title": "Low-noise custom VLSI for CdZnTe pixel detectors", "ispublished": "unpub", "full_text_status": "public", "keywords": "x-ray astrophysics electronics CdZnTe", "note": "\u00a9 1998 by the Society of Photo-Optical Instrumentation.\n\nThis work was supported by NASA under grant No. NAG5-5128.\n\nReprint - 2003-26.pdf
", "abstract": "A custom analog VLSI chip is being developed for the readout of pixellated CdZnTe detectors in the focal plane of an astronomical hard X-ray telescope. The chip is intended for indium bump bonding to a pixel detector having pitch near 0.5 mm. A complete precision analog signal processing chain, including charge sensitive preamplifier, shaping amplifiers and peak detect and hold circuit, is provided for each pixel. Here we describe the circuitry and discuss the performance of a functional prototype fabricated in a 1.2um CMOS process at Orbit Semiconductor. Dynamic performance is found to be close to SPICE model predictions over a self-triggering range extending from 1 to 150 keV (200 to 30000 electrons). Integral nonlinearity\n(1 %) and noise (0.25 keV or 50 electrons FWHM with 200 fF input capacitance) while acceptable are not as good as\npredicted. Power consumption is only 250 uW per pixel. Layout and design techniques are discussed which permit successful self-triggering operation at the low 1 keV threshold.", "date": "1998-07-19", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers", "id_number": "CaltechAUTHORS:20150305-162936326", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150305-162936326", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-5128" } ] }, "other_numbering_system": { "items": [ { "id": "2003-26", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Siegmund-O-H-W", "name": { "family": "Siegmund", "given": "Oswald H. W." } }, { "id": "Gummin-M-A", "name": { "family": "Gummin", "given": "Mark A." } } ] }, "doi": "10.1117/12.330328", "primary_object": { "basename": "2003-26.pdf", "url": "https://authors.library.caltech.edu/records/45274-r1897/files/2003-26.pdf" }, "pub_year": "1998", "author_list": "Cook, Walter R.; Burnham, Jill A.; et el." }, { "id": "https://authors.library.caltech.edu/records/yhnv6-egt46", "eprint_id": 53300, "eprint_status": "archive", "datestamp": "2023-08-19 02:12:41", "lastmod": "2024-01-13 16:13:25", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Klecker-B", "name": { "family": "Klecker", "given": "B." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" } ] }, "title": "Anomalous Cosmic Rays", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Springer International Publishing AG, Part of Springer Science+Business Media.\n\nVolume Resulting from an ISSI Workshop 17\u201320 September 1996 and 10\u201314 March 1997, Bern, Switzerland.\n\nSubmitted - 1998-09.pdf
", "abstract": "We review the observed properties of anomalous cosmic rays and the present status of our knowledge of the processes by which they originate. We compiled a comprehensive set of ACR energy spectral data from various spacecraft throughout the heliosphere during the passes of Ulysses over the poles of the Sun and present first results of a detailed modeling effort. In several contributions, we discuss the questions of injection and possible pre-acceleration of pickup ions, summarize new observations on the ionic charge composition, and present new results on the composition of minor ions in ACRs.", "date": "1998", "date_type": "published", "publisher": "Springer", "place_of_pub": "Dordrecht, Netherlands", "pagerange": "259-308", "id_number": "CaltechAUTHORS:20150107-155451895", "isbn": "978-90-481-5032-8", "book_title": "Cosmic Rays in the Heliosphere", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150107-155451895", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1998-09", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Fisk-L-A", "name": { "family": "Fisk", "given": "Lennard A." } }, { "id": "Jokipii-J-R", "name": { "family": "Jokipii", "given": "J. R." } }, { "id": "Simnett-G-M", "name": { "family": "Simnett", "given": "G. M." } }, { "id": "von-Steiger-R", "name": { "family": "von Steiger", "given": "R." } }, { "id": "Wenzel-K-P", "name": { "family": "Wenzel", "given": "K.-P." } } ] }, "doi": "10.1007/978-94-017-1189-0_18", "primary_object": { "basename": "1998-09.pdf", "url": "https://authors.library.caltech.edu/records/yhnv6-egt46/files/1998-09.pdf" }, "pub_year": "1998", "author_list": "Klecker, B.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/4xm08-gte56", "eprint_id": 52361, "eprint_status": "archive", "datestamp": "2023-08-19 02:12:36", "lastmod": "2023-10-18 19:47:54", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Zhang-M", "name": { "family": "Zhang", "given": "M." } }, { "id": "Simpson-J-A", "name": { "family": "Simpson", "given": "J. A." } }, { "id": "Kunow-H", "name": { "family": "Kunow", "given": "H." } }, { "id": "Jokipii-J-R", "name": { "family": "Jokipii", "given": "J. R." } }, { "id": "Potgieter-M-S", "name": { "family": "Potgieter", "given": "M. S." } }, { "id": "Burger-R-A", "name": { "family": "Burger", "given": "R.A." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" } ] }, "title": "Implications of 26-Day Variations for the Global Modulation", "ispublished": "unpub", "full_text_status": "restricted", "note": "\u00a9 Springer International Publishing AG, Part of Springer.\n\nOne of the authors (KPW) wishes to acknowledge the support of Ms. C. Nilsson in producing this report.", "date": "1998", "date_type": "published", "publisher": "Springer", "place_of_pub": "Dordrecht, Netherlands", "pagerange": "203-207", "id_number": "CaltechAUTHORS:20141203-160500797", "isbn": "978-90-481-5032-8", "book_title": "Cosmic Rays in the Heliosphere", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141203-160500797", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1997-58", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Fisk-L-A", "name": { "family": "Fisk", "given": "L. A." } }, { "id": "Jokipii-J-R", "name": { "family": "Jokipii", "given": "J. R." } }, { "id": "Simnett-G-M", "name": { "family": "Simnett", "given": "G. M." } }, { "id": "von-Steiger-R", "name": { "family": "von Steiger", "given": "R." } }, { "id": "Wenzel-K-P", "name": { "family": "Wenzel", "given": "K.-P." } } ] }, "doi": "10.1007/978-94-017-1189-0", "pub_year": "1998", "author_list": "Zhang, M.; Simpson, J. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/9jm60-e5g97", "eprint_id": 103088, "eprint_status": "archive", "datestamp": "2023-08-19 02:17:48", "lastmod": "2024-01-15 03:01:36", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Williams-D-L", "name": { "family": "Williams", "given": "D. L." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Solar Energetic Particle Isotopic Composition", "ispublished": "unpub", "full_text_status": "restricted", "note": "\u00a9 1998 Kluwer Academic Publishers.\n\nWe appreciate the contributions of C. M.S. Cohen, A. C. Cummings, T. T. von Rosenvinge, and M. E. Wiedenbeck to the development and data analysis of the SIS instrument on ACE. This work was also funded by NASA grants NAG5-2963, and NAG5-6912. One of us (D. L. Williams) would like to acknowledge support from the NASA Graduate Student Researchers Program, grant number NGT-51156.", "abstract": "We discuss isotopic abundance measurements of heavy (6 \u2264 Z \u2264 14) solar energetic particles with energies from \u223c15 to 70 MeV/nucleon, focusing on new measurements made on SAMPEX during two large solar particle events in late 1992. These measurements are corrected for charge/mass dependent acceleration effects to obtain estimates of coronal isotopic abundances and are compared with terrestrial and solar wind isotope abundances. An example of new results from the Advanced Composition Explorer is included.", "date": "1998", "date_type": "published", "publisher": "Springer Netherlands", "place_of_pub": "Dordrecht", "pagerange": "379-386", "id_number": "CaltechAUTHORS:20200508-162839618", "isbn": "9789401060226", "book_title": "Solar Composition and its Evolution \u2014 from Core to Corona", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20200508-162839618", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-2963" }, { "agency": "NASA", "grant_number": "NAG5-6912" }, { "agency": "NASA", "grant_number": "NGT-51156" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Fr\u00f6hlich-C", "name": { "family": "Fr\u00f6hlich", "given": "C." } }, { "id": "Huber-M-C-E", "name": { "family": "Huber", "given": "M. C. E." } }, { "id": "Solanki-S-K", "name": { "family": "Solanki", "given": "S. K." } }, { "id": "von-Steiger-R", "name": { "family": "von Steiger", "given": "R." } } ] }, "doi": "10.1007/978-94-011-4820-7_34", "pub_year": "1998", "author_list": "Williams, D. L.; Leske, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/yws2f-je994", "eprint_id": 52015, "eprint_status": "archive", "datestamp": "2023-08-19 01:55:14", "lastmod": "2023-10-18 19:15:55", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mao-Peter-H", "name": { "family": "Mao", "given": "Peter H." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Platonov-Y-Y", "name": { "family": "Platonov", "given": "Y.Y." } }, { "id": "Broadway-D", "name": { "family": "Broadway", "given": "D." } }, { "id": "DeGroot-B", "name": { "family": "DeGroot", "given": "B." } }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "F. E." }, "orcid": "0000-0001-5679-1946" }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "William W." } }, { "id": "Hailey-C-J", "name": { "family": "Hailey", "given": "C. J." } } ] }, "title": "Development of Grazing Incidence Multilayer Mirrors for Hard X-ray Focusing Telescopes", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1997 Copyright SPIE--The International Society for Optical Engineering\n\nWe acknowledge the support of NASA's SR&T (NAGW-1919) and SBIR (NASB-97016) programs. PHM acknowledges\nthe support of a NASA GSRP Fellowship (NGT-50006).\n\nSubmitted - 1997-39.pdf
", "abstract": "We are developing depth-graded, multilayer-coated mirrors for astrophysical hard X-ray focusing telescopes. In this\npaper, we discuss the primary technical challenges associated with the multilayer coatings, and report on progress to date. We have sputtered constant cl-spacing and depth-graded W / Si multilayers onto 0.3- 0.5 mm thick DURAN\nglass (AF45 and D263) and 0.4 mm thick epoxy replicated aluminum foils (ERAFs) , both of which are potential\nmirror substrates. We have characterized the interfacial roughness, uniformity, and stress of the coatings. The\naverage interfacial roughness of each multilayer was measured from specular reflectivity scans (Bi = Br) using Cu\nK0 X-rays. The thin film stress was calculated from the change in curvature induced by the coating on flat glass\nsubstrates. Thickness and roughness uniformity were measured by taking specular reflectivity scans of a multilayer deposited on the inside surface of a quarter cylinder section. We found that interfacial roughness (a) in the multilayers was typically between 3.5 and 4.0 A on DESAG glass, and between 4.5 and 5.0 A on the ERAFs. Also, we found that coatings deposited on glass that has been thermally formed into a cylindrical shape performed as well as flat glass. The film stress, calculated from Stoney's equation, for a 200 layer graded multilayer was approximately 200 MPa. Our uniformity measurements show that with no baffles to alter the deposition profile on a curved optic, the layer thickness differs by \"'203 between the center and the edge of the optic. Interfacial roughness, however, remained constant, around 3.6 A, throughout the curved piece, even as the layer spacing dropped off.", "date": "1997-10-15", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers (SPIE)", "id_number": "CaltechAUTHORS:20141120-142647126", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141120-142647126", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGW-1919" }, { "agency": "NASA", "grant_number": "NASB-97016" }, { "agency": "NASA", "grant_number": "NGT-50006" } ] }, "other_numbering_system": { "items": [ { "id": "1997-39", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Siegmund-O-H-W", "name": { "family": "Siegmund", "given": "Oswald H. W." } }, { "id": "Gammin-M-A", "name": { "family": "Gammin", "given": "M. A." } } ] }, "primary_object": { "basename": "1997-39.pdf", "url": "https://authors.library.caltech.edu/records/yws2f-je994/files/1997-39.pdf" }, "pub_year": "1997", "author_list": "Mao, Peter H.; Harrison, Fiona A.; et el." }, { "id": "https://authors.library.caltech.edu/records/8fgz0-df010", "eprint_id": 88385, "eprint_status": "archive", "datestamp": "2023-08-19 01:55:19", "lastmod": "2024-01-14 20:32:08", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hailey-C-J", "name": { "family": "Hailey", "given": "Charles J." } }, { "id": "Abdali-S", "name": { "family": "Abdali", "given": "Salim" } }, { "id": "Christensen-F-E", "name": { "family": "Christensen", "given": "Finn E." }, "orcid": "0000-0001-5679-1946" }, { "id": "Craig-W-W", "name": { "family": "Craig", "given": "William W." } }, { "id": "Decker-T-R", "name": { "family": "Decker", "given": "Todd R." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Jimenez-Garate-M-A", "name": { "family": "Jimenez-Garate", "given": "Mario A." } } ] }, "title": "Investigation of substrates and mounting techniques for the\n High Energy Focusing Telescope (HEFT)", "ispublished": "unpub", "full_text_status": "public", "keywords": "X-ray optics, multilayers, thin foil optics", "note": "\u00a9 1997 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nThis work is Columbia Astrophysics Laboratory contribution number 642.\n\nPublished - 535.pdf
", "abstract": "The high energy focusing telescope (HEFT) is a balloon-borne system for obtaining arcminute imagery in the 20 - 100 keV energy band. The hard x-ray optics are baselined to use thin epoxy-replicated aluminum foil substrates coated with graded-d multilayers, and we show some results on x-ray performance of prototype foil substrates. We also propose an extremely promising alternative substrate -- thermally formed glass. The advantages of thermally formed glass substrates, their fabrication and preliminary metrology on sample pieces are discussed. If ultimately feasible, the thermally formed glass is a better substrate due to its superior hard x-ray reflectivity and scattering properties in comparison to similarly coated epoxy-replicated aluminum foil. We also discuss some preliminary work on the HEFT mirror mounting concept and the associated angular resolution error budget.", "date": "1997-10-15", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "535-543", "id_number": "CaltechAUTHORS:20180731-114053130", "isbn": "9780819425362", "book_title": "EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VIII", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180731-114053130", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "collection": "CaltechAUTHORS", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory", "value": "Space Radiation Laboratory" } ] }, "contributors": { "items": [ { "id": "Siegmund-O-H-W", "name": { "family": "Siegmund", "given": "Oswald H. W." } }, { "id": "Gummin-M-A", "name": { "family": "Gummin", "given": "Mark A." } } ] }, "doi": "10.1117/12.278902", "primary_object": { "basename": "535.pdf", "url": "https://authors.library.caltech.edu/records/8fgz0-df010/files/535.pdf" }, "pub_year": "1997", "author_list": "Hailey, Charles J.; Abdali, Salim; et el." }, { "id": "https://authors.library.caltech.edu/records/x6e7h-ebg02", "eprint_id": 84239, "eprint_status": "archive", "datestamp": "2023-08-19 01:35:58", "lastmod": "2024-01-14 19:30:13", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Platonov-Y-Ya", "name": { "family": "Platonov", "given": "Yuriy Ya." } }, { "id": "Broadway-D-M", "name": { "family": "Broadway", "given": "David" } }, { "id": "DeGroot-B", "name": { "family": "DeGroot", "given": "Brian" } }, { "id": "Mao-Peter-H", "name": { "family": "Mao", "given": "Peter" } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona" }, "orcid": "0000-0003-2992-8024" }, { "id": "Gutman-G-A", "name": { "family": "Gutman", "given": "George" } }, { "id": "Rodriguez-J", "name": { "family": "Rodriguez", "given": "Jim" } } ] }, "title": "X-ray reflectivity and mechanical stress in W/Si multilayers deposited on thin substrates of glass, epoxy-replicated aluminum foil, and Si wafer", "ispublished": "unpub", "full_text_status": "public", "keywords": "multilayer structure, X-rays, magnetron sputtering deposition, thin films, mechanical stress, thin substrates, epoxy gold replicated foil, thin glass, thermal annealing, X-ray reflectivity, interfacial roughness", "note": "\u00a9 1997 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nWe wish to express our gratitude to Chuck Hailey and Bill Craig from Columbia University for supplying the qualified thin glass and epoxy gold replicated aluminum foil substrates and to Boris Vernian, Licai Jiang and Bongly Kim from Osmic, inc. for help in radius curvature measurements. This work was performed under SBIR Phase II Contract No. NAS8-970l6.\n\nPublished - 469.pdf
", "abstract": "Reflectivity at \u03bb = 0.154 nm and mechanical stress in the bulk thin films of tungsten and silicon and single d- spacing multilayers on their basis with d approximately equals 2.8 nm deposited by the magnetron sputtering technique on flat thin substrates of Si wafer (~ 0.2 mm), glass (~ 0.3 mm), and epoxy gold replicated aluminum foil (~ 0.3 mm) have been studied. The interfacial roughness of the multilayers has been calculated from the x- ray reflectivity curves as the following: on Si wafer \u03c3 \u2243 0.31 nm, on glass \u03c3 \u2243 0.32 nm, and on foil \u03c3 \u2243 0.34 nm. There was not observed a significant dependence on the stress in the Si film with change in rf power, Ar gas pressure and biasing. For the W films an increase of dc power results in an increase of stress. A similar relationship is also evident for W films deposited by rf power, but this dependence is less pronounced. The influence of low temperature (up to 200 \u00b0C) annealing on x-ray reflectivity and stress in the multilayers has been investigated. There was not found an appreciable changes in the absolute value of reflectivity or in d-spacing with annealing temperature. The stress in the coatings changes with annealing temperature from compressive to tensile. There was observed a temperature of annealing at which the stress is no longer present in the film. The absolute value of this temperature measured for W/Si multilayer is approximately 120 \u00b0C.", "date": "1997-07-11", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers", "place_of_pub": "Bellingham, WA", "pagerange": "469-475", "id_number": "CaltechAUTHORS:20180110-155845578", "isbn": "9780819425355", "book_title": "Grazing Incidence and Multilayer X-Ray Optical Systems", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180110-155845578", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS8-97016" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Hoover-R-B", "name": { "family": "Hoover", "given": "Richard B." } }, { "id": "Walker-A-B-C-II", "name": { "family": "Walker", "given": "Arthur B. C., II" } } ] }, "doi": "10.1117/12.278878", "primary_object": { "basename": "469.pdf", "url": "https://authors.library.caltech.edu/records/x6e7h-ebg02/files/469.pdf" }, "pub_year": "1997", "author_list": "Platonov, Yuriy Ya.; Broadway, David; et el." }, { "id": "https://authors.library.caltech.edu/records/3e5rz-mdf12", "eprint_id": 52287, "eprint_status": "archive", "datestamp": "2023-08-19 01:06:05", "lastmod": "2023-10-18 19:44:16", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Corbel-S", "name": { "family": "Corbel", "given": "S." } }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. R." } }, { "id": "Harrison-P-F", "name": { "family": "Harrison", "given": "P. F." } }, { "id": "Prince-T-A", "name": { "family": "Prince", "given": "Thomas A." }, "orcid": "0000-0002-8850-3627" }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Wang-Sharon-X", "name": { "family": "Wang", "given": "S." }, "orcid": "0000-0002-6937-9034" } ] }, "title": "Hard X-ray Imaging Survey of the Galactic Plane with the Caltech Gamma-Ray Imaging Payload GRIP-2", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 European Space Agency. Provided by NASA ADS.\n\nWe would like to thank Jill Burnham, Derrick Key and Brian Matthews for excellent technical support. We also thank the staff and launch crew at the National Scientific Balloon Facility for two very successful flights. Support for this work was provided by NASA grants NAGW 1919 and NGT-50804.\n\nPublished - 1997-40.pdf
", "abstract": "In a recent balloon flight on October 6-7, 1995, the\nCaltech coded aperture Gamma-Ray Imaging Payload\n(GRIP-2) imaged numerous fields in the Galactic plane and center in the 25 ke V - 600 ke V energy band. GRIP-2's large phoswich detector (3830 cm2), 15\u00b0 (FWHM) field of view, 30' angular resolution and 6' point source localization ability make it ideally suited for surveying the accreting binary population of the Galaxy at high energy. We present a brief description of the instrument and we also report preliminary imaging results from our recent Southern hemisphere campaign and show the capabilities of this balloon-borne coded aperture telescope for hard X-ray/gamma ray imaging. Several galactic sources\nhave so far been detected above 25 keV with GRIP-2:\nIE 1740.7-2942, GRS 1758-258, Cyg X-1, GX 339-4,\nGX 354-0, GX 1+4, GRS 1915+105, Cyg X-3, 4U 1700-377, 4U 1702-429, Terzan 2 and the Crab pulsar.", "date": "1997-03", "date_type": "published", "publisher": "European Space Agency", "id_number": "CaltechAUTHORS:20141202-142723632", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141202-142723632", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGW-1919" }, { "agency": "NASA", "grant_number": "NGT-50804" } ] }, "other_numbering_system": { "items": [ { "id": "1997-40", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1997-40.pdf", "url": "https://authors.library.caltech.edu/records/3e5rz-mdf12/files/1997-40.pdf" }, "pub_year": "1997", "author_list": "Corbel, S.; Cook, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/e5bf7-vdp80", "eprint_id": 47311, "eprint_status": "archive", "datestamp": "2023-08-19 00:45:48", "lastmod": "2023-10-26 20:29:43", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Dougherty-B-L", "name": { "family": "Dougherty", "given": "B. L." } }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Sposato-S-H", "name": { "family": "Sposato", "given": "S. H." } }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } } ] }, "title": "The Response of Particle Detectors to Gold Nuclei at 11 GeV/nucleon", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Space Research Unit. Provided by the NASA Astrophysics Data System.\n\nWe thank Hank Crawford and collaborators and the staff of the BNL I AGS for their assistance in carrying out the accelerator run. This research described in this paper was partially carried out by the Jet Propulsion Laboratory,\nCalifornia Institute of Technology, under a contract with the National Aeronautics and Space Administration. NASA also supported participation in this research by Caltech (grant NAGW-1919), Washington University, Goddard Space Flight Center, and the University of Minnesota. In addition,\nthe Washington University effort was partially supported by the McDonnell Center for the Space Sciences.\n\nPublished - 1997-15.pdf
", "abstract": "A set of particle detectors has been exposed to beams of _(79)Au nuclei at ~ 11 Ge V /nucleon from\nthe Alternating Gradient Synchrotron (AGS) at Brookhaven National Laboratory (BNL). We report\npreliminary results on the responses obtained from silicon solid state detectors and from Cerenkov\ncounters utilizing total internal reflection with waveshifter bars for readout.", "date": "1997", "date_type": "published", "publisher": "Potchefstroom University, Space Research Unit", "id_number": "CaltechAUTHORS:20140717-162349735", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140717-162349735", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGW-1919" }, { "agency": "Washington University McDonnell Center for the Space Sciences" } ] }, "other_numbering_system": { "items": [ { "id": "1997-15", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Potgieter-M-S", "name": { "family": "Potgieter", "given": "M. S." } } ] }, "primary_object": { "basename": "1997-15.pdf", "url": "https://authors.library.caltech.edu/records/e5bf7-vdp80/files/1997-15.pdf" }, "pub_year": "1997", "author_list": "Wiedenbeck, M. E.; Barbier, L. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/b6pmy-dxt74", "eprint_id": 50706, "eprint_status": "archive", "datestamp": "2023-08-19 00:46:27", "lastmod": "2023-10-18 00:03:47", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Allbritton-G", "name": { "family": "Allbritton", "given": "G." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. R." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Dougherty-B-L", "name": { "family": "Dougherty", "given": "B. L." } }, { "id": "Dowkonnt-P-F", "name": { "family": "Dowkonnt", "given": "P. F." } }, { "id": "Epstein-J-W", "name": { "family": "Epstein", "given": "J. W." } }, { "id": "Fridovich-B", "name": { "family": "Fridovich", "given": "B." } }, { "id": "Gauld-B", "name": { "family": "Gauld", "given": "B." } }, { "id": "Grumm-R", "name": { "family": "Grumm", "given": "R." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Kecman-B", "name": { "family": "Kecman", "given": "B." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Madden-M-P", "name": { "family": "Madden", "given": "M. P." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Milliken-B", "name": { "family": "Milliken", "given": "B." } }, { "id": "Olevitch-M-A", "name": { "family": "Olevitch", "given": "M. A." } }, { "id": "Radocinski-R-G", "name": { "family": "Radocinski", "given": "R. G." } }, { "id": "Shuman-S", "name": { "family": "Shuman", "given": "S." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Thayer-M-R", "name": { "family": "Thayer", "given": "M. R." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "The ACE-CRIS Scintillating Optical Fiber Trajectory (SOFT) Detector: Calibrations at the NSCL and GSI", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Space Research Unit. Provided by the NASA Astrophysics Data System.\n\nThis work was supported in part by NASA contract NASS-32626, other NASA grants, and in part\nby the McDonnell Center for the Space Sciences at Washington University.\n\nPublished - 1997-21.pdf
", "abstract": "The Scintillating Optical Fiber Trajectory (SOFT) detector, the hodoscope for the Cosmic Ray Isotope Spectrometer (CRIS) on the NASA Advanced Composition Explorer, was calibrated using 155 MeV/n He, Li, C, N, 0, and Ar at the Michigan State University National Superconducting\nCyclotron Laboratory (NSCL), and 200 - 700 MeV/n C, Si, and Fe at the GSI facility in Darrnstadt. Germany. The flight instrument consists of three hodoscope fiber planes and one trigger plane. read out by an image intensified CCD camera system and by intensified photodiodes respectively. The\nspatial and angular resolution of the hodoscope is described, along with the detection efficiency of both the hodoscope and trigger plane as a function of charge.", "date": "1997", "date_type": "published", "publisher": "Potchefstroom University, Space Research Unit", "id_number": "CaltechAUTHORS:20141022-160308145", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141022-160308145", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-32626" } ] }, "other_numbering_system": { "items": [ { "id": "1997-21", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Potgieter-M-S", "name": { "family": "Potgieter", "given": "M. S." } }, { "id": "Raubenheimer-C", "name": { "family": "Raubenheimer", "given": "C." } }, { "id": "van-der-Walt-D-J", "name": { "family": "van der Walt", "given": "D. J." } } ] }, "primary_object": { "basename": "1997-21.pdf", "url": "https://authors.library.caltech.edu/records/b6pmy-dxt74/files/1997-21.pdf" }, "pub_year": "1997", "author_list": "von Rosenvinge, T. T.; Allbritton, G.; et el." }, { "id": "https://authors.library.caltech.edu/records/nt6nf-7b957", "eprint_id": 50679, "eprint_status": "archive", "datestamp": "2023-08-19 00:46:18", "lastmod": "2023-10-18 00:02:28", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. R." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Dougherty-B-L", "name": { "family": "Dougherty", "given": "B. L." } }, { "id": "Gauld-B", "name": { "family": "Gauld", "given": "B." } }, { "id": "Grumm-R", "name": { "family": "Grumm", "given": "R." } }, { "id": "Kecman-B", "name": { "family": "Kecman", "given": "B." } }, { "id": "Kleinfelder-S-A", "name": { "family": "Kleinfelder", "given": "S.A." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Radocinski-R-G", "name": { "family": "Radocinski", "given": "R. G." } }, { "id": "Shuman-S", "name": { "family": "Shuman", "given": "S." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Thayer-M-R", "name": { "family": "Thayer", "given": "M. R." } }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Silicon Strip Detectors with Custom VLSI Readout Electronics for the SIS Instrument of ACE", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Space Research Unit. Provided by the NASA Astrophysics Data System.\n\nThis research was supported by the National Aeronautics and Space Administration at the California Institute of Technology (under contract NASS-32626 and grant NAGW-1919), the Jet Propulsion Laboratory, and the Goddard Space Flight Center.\n\nPublished - 1997-19.pdf
", "abstract": "We discuss the design and implementation of the trajectory system for the Solar Isotope Spectrometer (SIS) instrument on the Advanced Composition Explorer (ACE) mission. Thin, large area silicon strip detectors instrumented with a custom very large scale integrated circuit (VLSI) pulse height analyzer (PHA) for each strip are used to simultaneously achieve large geometrical factor and the capability for making precise measurements in even the largest solar energetic particle (SEP) events.", "date": "1997", "date_type": "published", "publisher": "Potchefstroom University, Space Research Unit", "id_number": "CaltechAUTHORS:20141022-105048424", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141022-105048424", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-32626" }, { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "other_numbering_system": { "items": [ { "id": "1997-19", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Potgieter-M-S", "name": { "family": "Potgieter", "given": "M. S." } }, { "id": "van-der-Walt-D-J", "name": { "family": "van der Walt", "given": "D. J." } }, { "id": "Raubenheimer-C", "name": { "family": "Raubenheimer", "given": "C." } } ] }, "primary_object": { "basename": "1997-19.pdf", "url": "https://authors.library.caltech.edu/records/nt6nf-7b957/files/1997-19.pdf" }, "pub_year": "1997", "author_list": "Wiedenbeck, M. E.; Christian, E. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/5tbg3-a4572", "eprint_id": 50674, "eprint_status": "archive", "datestamp": "2023-08-19 00:46:14", "lastmod": "2023-10-18 00:02:14", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Dougherty-B-L", "name": { "family": "Dougherty", "given": "B. L." } }, { "id": "Allbriton-G-L", "name": { "family": "Allbritton", "given": "G.L." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. R." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Gauld-B", "name": { "family": "Gauld", "given": "B." } }, { "id": "Grumm-R", "name": { "family": "Grumm", "given": "R." } }, { "id": "Kecman-B", "name": { "family": "Kecman", "given": "B." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Madden-M", "name": { "family": "Madden", "given": "M." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Milliken-B", "name": { "family": "Milliken", "given": "B." } }, { "id": "Radocinski-R-G", "name": { "family": "Radocinski", "given": "R. G." } }, { "id": "Sears-B", "name": { "family": "Sears", "given": "B." } }, { "id": "Shuman-S", "name": { "family": "Shuman", "given": "S." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Thayer-M-R", "name": { "family": "Thayer", "given": "M. R." } }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Large-Area Silicon Detectors for the Advanced Composition Explorer (ACE) Solar Isotope Spectrometer (SIS)", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Space Research Unit. Provided by the NASA Astrophysics Data System.\n\nThis research was supported by the National Aeronautics and Space Administration at the California Institute of Technology (under contract NASS-32626 and grant NAGW-1919), the Jet Propulsion Laboratory, and the Goddard Space Flight Center. BLD is grateful for support from the National\nResearch Council.\n\nPublished - 1997-18.pdf
", "abstract": "Extensive measurements were made of the thicknesses and dead-layers of the large-area, highpurity silicon detectors used for the Solar Isotope Spectrometer (SIS), an instrument to be launched on the Advanced Composition Explorer (ACE) spacecraft. Tests using accelerated beams of heavy nuclei were also carried out to characterize the completed instrument.", "date": "1997", "date_type": "published", "publisher": "Potchefstroom University, Space Research Unit", "id_number": "CaltechAUTHORS:20141022-100159601", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141022-100159601", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-3266" }, { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "other_numbering_system": { "items": [ { "id": "1997-18", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Potgieter-M-S", "name": { "family": "Potgieter", "given": "M. S." } }, { "id": "Raubenheimer-C", "name": { "family": "Raubenheimer", "given": "C." } }, { "id": "van-der-Walt-D-J", "name": { "family": "van der Walt", "given": "D. J." } } ] }, "primary_object": { "basename": "1997-18.pdf", "url": "https://authors.library.caltech.edu/records/5tbg3-a4572/files/1997-18.pdf" }, "pub_year": "1997", "author_list": "Dougherty, B. L.; Allbritton, G.L.; et el." }, { "id": "https://authors.library.caltech.edu/records/9194s-nqv11", "eprint_id": 47312, "eprint_status": "archive", "datestamp": "2023-08-19 00:45:53", "lastmod": "2023-10-26 20:29:45", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Ormes-J-F", "name": { "family": "Ormes", "given": "J. F." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "The Advanced Composition Explorer Mission", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Space Research Unit. Provided by NASA Astrophysics Data System.\n\nThe ACE scientific payload was developed under the leadership of the California Institute of Technology\n(E. C. Stone, PI) and was managed by the Explorer Projects Office at Goddard Space Flight\nCenter. The spacecraft was built by the Johns Hopkins University Applied Physics Laboratory. The\nauthors and the ACE Co-Investigators - W.R. Binns, P. Bochsler, L. F. Burlaga, A. C. Cummings,\nW. C. Feldman, T. L. Garrard~ J_ Geiss, G. Gloeckler, R. E. Gold, D. Hovestadt, B. Klecker, S. M.\nKrimigis, G. M. Mason, D. McComas, R. A. Mewaldt, E. Mobius, N. F. Ness, J. A Simpson, TT.\nvon Rosenvinge, and M. E. Wiedenbeck - are especially grateful to the talented staff of these institutions\nand of the various institutions listed in the instrument section, who constructed the payload.\nThis work was supported in part by NASA under NAS5-32626.\n\nPublished - 1997-16.pdf
", "abstract": "The Advanced Composition Explorer, to be launched in August of 1997, will include six high\nresolution spectrometers that will measure the composition of interplanetary nuclei with 2\u2264Z\u226428 from < 1 keV/nuc to ~500 MeV/nuc. Three additional instruments will provide the interplanetary context for these measurements. We give a brief introduction to the ACE mission, its\ninstrumentation, and its goals.", "date": "1997", "date_type": "published", "publisher": "Potchefstroom University, Space Research Unit", "id_number": "CaltechAUTHORS:20140717-163218909", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140717-163218909", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-32626" } ] }, "other_numbering_system": { "items": [ { "id": "1997-16", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Potgeiter-M-S", "name": { "family": "Potgeiter", "given": "M. S." } } ] }, "primary_object": { "basename": "1997-16.pdf", "url": "https://authors.library.caltech.edu/records/9194s-nqv11/files/1997-16.pdf" }, "pub_year": "1997", "author_list": "Garrard, T. L.; Christian, E. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/80rzg-crx66", "eprint_id": 50709, "eprint_status": "archive", "datestamp": "2023-08-19 00:46:37", "lastmod": "2023-10-18 00:03:56", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Hammond-J-S", "name": { "family": "Hammond", "given": "J. S." } } ] }, "title": "A Science Center for the Advanced Composition Explorer", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Space Research Unit. Provided by the NASA Astrophysics Data System.\n\nThis work was supported in part by NASA under NAS5-32626.\n\nPublished - 1997-23.pdf
", "abstract": "The Advanced Composition Explorer (ACE) mission is supported by an ACE Science Center for the purposes of facilitating collaborative work. It is intended that coordinated use of a centralized science facility by the ACE team will ensure appropriate use of data formatting standards, thus easing access to the data; will improve communications within and to the ACE science working team; and will reduce redundant effort in data processing.", "date": "1997", "date_type": "published", "publisher": "Potchefstroom University, Space Research Unit", "id_number": "CaltechAUTHORS:20141022-162931350", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141022-162931350", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-32626" } ] }, "other_numbering_system": { "items": [ { "id": "1997-23", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Potgieter-M-S", "name": { "family": "Potgieter", "given": "M. S." } }, { "id": "Raubenheimer-C", "name": { "family": "Raubenheimer", "given": "C." } }, { "id": "van-der-Walt-D-J", "name": { "family": "van der Walt", "given": "D. J." } } ] }, "primary_object": { "basename": "1997-23.pdf", "url": "https://authors.library.caltech.edu/records/80rzg-crx66/files/1997-23.pdf" }, "pub_year": "1997", "author_list": "Garrard, T. L. and Hammond, J. S." }, { "id": "https://authors.library.caltech.edu/records/z8y9w-vqy37", "eprint_id": 46855, "eprint_status": "archive", "datestamp": "2023-08-19 00:44:57", "lastmod": "2023-10-26 19:56:46", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Selesnick-R-S", "name": { "family": "Selesnick", "given": "R. S." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } } ] }, "title": "Multiply Charged Anomalous Cosmic Rays Above 15 MeV/nucleon", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Space Research Unit. Provided by the NASA Astrophysics Data System.\n\nThis work was supported by NASA under Cooperative Agreement 26979B with the Aerospace\nCorporation and grants NAS5-30704 and NAGW-1919 to the California Institute of Technology.\n\nPublished - 1997-05.pdf
", "abstract": "Ionic charge states of anomalous cosmic ray nitrogen, oxygen, and neon with kinetic energies\nabove 15 MeV /nucleon have been measured using the geomagnetic field as a rigidity filter. Data\nfrom the MAST instrument on the polar-orbiting SAMPEX satellite taken during the period\nfrom 1992 to 1996 show that all three elements are predominantly multiply charged at high\nenergies, confirming the earlier result for oxygen alone based on a smaller data set. Energy\nspectra of the singly charged and multiply charged components of each element are compared\nwith model predictions.", "date": "1997", "date_type": "published", "publisher": "Potchefstroom University, Space Research Unit", "id_number": "CaltechAUTHORS:20140703-224910311", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140703-224910311", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA Cooperative Agreement", "grant_number": "26979B" }, { "agency": "NASA", "grant_number": "NAS5-30704" }, { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "other_numbering_system": { "items": [ { "id": "1997-05", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Potgieter-M-S", "name": { "family": "Potgieter", "given": "M. S." } }, { "id": "Raubenheimer-C", "name": { "family": "Raubenheimer", "given": "C." } }, { "id": "van-der-Walt-D-J", "name": { "family": "van der Walt", "given": "D. J." } } ] }, "primary_object": { "basename": "1997-05.pdf", "url": "https://authors.library.caltech.edu/records/z8y9w-vqy37/files/1997-05.pdf" }, "pub_year": "1997", "author_list": "Selesnick, R. S.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/rrm9x-fht69", "eprint_id": 46854, "eprint_status": "archive", "datestamp": "2023-08-19 00:44:52", "lastmod": "2023-10-26 19:56:43", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" } ] }, "title": "Evidence for Anomalous Cosmic Ray S, Si, and Fe in the Outer Heliosphere and for A Non-ACR Source of S at 1 AU", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Space Research Unit. Provided by the NASA Astrophysics Data System.\n\nWe appreciate valuable discussions with R. Mewaldt. We thank D. Reames for providing the\ndata from Figure 4 of Reames et al. (1997) in digital form. This work was supported by NASA under\ncontract NAS7-918.\n\nPublished - 1997-04.pdf
", "date": "1997", "date_type": "published", "publisher": "Potchefstroom University, Space Research Unit", "id_number": "CaltechAUTHORS:20140703-224734935", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140703-224734935", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-918" } ] }, "other_numbering_system": { "items": [ { "id": "1997-04", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Potgieter-M-S", "name": { "family": "Potgieter", "given": "M. S." } }, { "id": "Raubenheimer-C", "name": { "family": "Raubenheimer", "given": "C." } }, { "id": "van-der-Walt-D-J", "name": { "family": "van der Walt", "given": "D. J." } } ] }, "primary_object": { "basename": "1997-04.pdf", "url": "https://authors.library.caltech.edu/records/rrm9x-fht69/files/1997-04.pdf" }, "pub_year": "1997", "author_list": "Stone, E. C. and Cummings, A. C." }, { "id": "https://authors.library.caltech.edu/records/se7fn-5j718", "eprint_id": 50708, "eprint_status": "archive", "datestamp": "2023-08-19 00:46:33", "lastmod": "2023-10-18 00:03:54", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Schindler-R-H", "name": { "family": "Schindler", "given": "R. H." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Ormes-J-F", "name": { "family": "Ormes", "given": "J. F." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } } ] }, "title": "An Experiment to Measure the Elemental Abundances of Ultra-Heavy Cosmic Rays", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Space Research Unit. Provided by the NASA Astrophysics Data System.\n\nThis work was supported in part by NASA grants at Washington University,\nCaltech, GSFC, JPL, and in pan by the McDonnell Center for the Space Sciences at Washington\nUniversity.\n\nPublished - 1997-22.pdf
", "abstract": "Measurements of the elemental abundances of galactic cosmic ray nuclei with charge 26\u2264z\u226492 can provide important information that should help to resolve the question of cosmic-ray origin; i.e. whether cosmic rays originate from the acceleration of interstellar grain material or from preferential selection and acceleration of nuclei from stellar photosphere-chromosphere regions with T-10^4\nbased on first ionization potential. They will also refine tests of whether freshly synthesized rprocess material is a significant component in cosmic rays. The detector concept described utilizes an array of silicon detectors for dF/dx measurements, two Cherenkov counters with radiators of\ndifferent refractive index for velocity determination (one using aerogel and one using a novel waveshifter readout approach), and scintillating fibers for a hodoscope/time-of-flight detector. The numbers of particles which can be collected with this approach and the expected charge resolution are discussed.", "date": "1997", "date_type": "published", "publisher": "Potchefstroom University, Space Research Unit", "id_number": "CaltechAUTHORS:20141022-162035331", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141022-162035331", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" } ] }, "other_numbering_system": { "items": [ { "id": "1997-22", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Potgieter-M-S", "name": { "family": "Potgieter", "given": "M. S." } }, { "id": "Raubenheimer-C", "name": { "family": "Raubenheimer", "given": "C." } }, { "id": "van-der-Walt-D-J", "name": { "family": "van der Walt", "given": "D. J." } } ] }, "primary_object": { "basename": "1997-22.pdf", "url": "https://authors.library.caltech.edu/records/se7fn-5j718/files/1997-22.pdf" }, "pub_year": "1997", "author_list": "Binns, W. R.; Hink, P. L.; et el." }, { "id": "https://authors.library.caltech.edu/records/jyghk-xxg29", "eprint_id": 50702, "eprint_status": "archive", "datestamp": "2023-08-19 00:46:23", "lastmod": "2023-10-18 00:03:31", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Dougherty-P-F", "name": { "family": "Dougherty", "given": "P.F." } }, { "id": "Dowkonnt-J-W", "name": { "family": "Dowkonnt", "given": "J.W." } }, { "id": "Epstein-B", "name": { "family": "Epstein", "given": "B." } }, { "id": "Fridovich-B", "name": { "family": "Fridovich", "given": "B." } }, { "id": "Gauld-R", "name": { "family": "Gauld", "given": "R." } }, { "id": "Grumm-R", "name": { "family": "Grumm", "given": "R." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Kecman-B", "name": { "family": "Kecman", "given": "B." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Madden-M-P", "name": { "family": "Madden", "given": "M.P." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Milliken-B", "name": { "family": "Milliken", "given": "B." } }, { "id": "Olevitch-M-A", "name": { "family": "Olevitch", "given": "M.A." } }, { "id": "Radocinski-R-G", "name": { "family": "Radocinski", "given": "R. G." } }, { "id": "Shuman-S", "name": { "family": "Shuman", "given": "S." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Thayer-M-R", "name": { "family": "Thayer", "given": "M. R." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "The Cosmic Ray Isotope Spectrometer (CRIS)", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Space Research Unit. Provided by the NASA Astrophysics Data System.\n\nThis research was supported by the National Aeronautics and Space Administration at the\nCalifornia Institute of Technology (under contract NAS5-32626 and grant NAGW-1919), the Jet\nPropulsion Laboratory, and the Goddard Space Flight Center. BLD is grateful for support from\nthe National Research Council.\n\nPublished - 1997-20.pdf
", "abstract": "The Cosmic Ray Isotope Spectrometer instrument on the Advanced Composition Explorer (ACE) spacecraft has been built and tested and will be launched into space in a few months. This paper briefly describes the overall instrument and expected performance.", "date": "1997", "date_type": "published", "publisher": "Potchefstroom University, Space Research Unit", "id_number": "CaltechAUTHORS:20141022-151929380", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141022-151929380", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-32626" }, { "agency": "NASA", "grant_number": "NAGW-1919" }, { "agency": "National Research Council" } ] }, "other_numbering_system": { "items": [ { "id": "1997-20", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Potgieter-M-S", "name": { "family": "Potgieter", "given": "M. S." } }, { "id": "Raubenheimer-C", "name": { "family": "Raubenheimer", "given": "C." } }, { "id": "van-der-Walt-D-J", "name": { "family": "van der Walt", "given": "D. J." } } ] }, "primary_object": { "basename": "1997-20.pdf", "url": "https://authors.library.caltech.edu/records/jyghk-xxg29/files/1997-20.pdf" }, "pub_year": "1997", "author_list": "Dougherty, P.F.; Dowkonnt, J.W.; et el." }, { "id": "https://authors.library.caltech.edu/records/9aefz-ren60", "eprint_id": 47309, "eprint_status": "archive", "datestamp": "2023-08-19 00:45:44", "lastmod": "2023-10-26 20:29:38", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Waddington-I", "name": { "family": "Waddington", "given": "I." } }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P." } }, { "id": "Nilsen-B-S", "name": { "family": "Nilsen", "given": "B. S." } } ] }, "title": "Propagation of the Heaviest UH-Cosmic Ray Nuclei", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Space Research Unit. Provided by the NASA Astrophysics Data System. \n\nThis work partially supponed by NASA under Grants NASA/NAGW-3014 and 5-5077. We\nare indebted to Joe Klarmann and David Lawrence of Washington U for assistance, and to the staff\nof the AGS for generous exposures and exceptional help during the Great Blizzard of '96.\n\nPublished - 1997-14.pdf
", "abstract": "Our previous studies showed that the fragmentation cross sections of gold nuclei interacting in\nhydrogen have large variations between the values measured at 0.9 and 10.6 GeV/n, which has very\nsignificant implications on calculations of the propagation of the heaviest UH cosmic ray nuclei,\nsuch as Pb and Pt We have now completed a series of runs at the Brookhaven AGS using beams of\ngold nuclei of intermediate energy. The data from these runs will allow us to establish the excitation\nfunctions for these cross sections in a wide range of targets and hence model propagation more\naccurately than hitherto. In addition we will be able to study the energy dependence of nuclear\ncharge pickup, electromagnetic dissociation and fission. Beams of gold nuclei with seven energies\nbetween 4.0 and 0.9 Ge V /n were studied interacting in targets ranging in mass from hydrogen to lead. We will present data on the cross sections derived from several of these beams and discuss\nsome of the implications.", "date": "1997", "date_type": "published", "publisher": "Potchefstroom University, Space Research Unit", "id_number": "CaltechAUTHORS:20140717-154827635", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140717-154827635", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGW-3014" }, { "agency": "NASA", "grant_number": "NAGW 5-5077" } ] }, "other_numbering_system": { "items": [ { "id": "1997-14", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Potgieter-M-S", "name": { "family": "Potgieter", "given": "M. S." } } ] }, "primary_object": { "basename": "1997-14.pdf", "url": "https://authors.library.caltech.edu/records/9aefz-ren60/files/1997-14.pdf" }, "pub_year": "1997", "author_list": "Waddington, I.; Cummings, J. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/k4mbe-sjj25", "eprint_id": 46856, "eprint_status": "archive", "datestamp": "2023-08-19 00:45:01", "lastmod": "2023-10-26 19:56:48", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Updated Measurements of the Isotopic Composition of Interplanetary and Geomagnetically Trapped Anomalous Cosmic Rays", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Space Research Unit. Provided by the NASA Astrophysics Data System.\n\nThis work was supported by NASA under contract NASS-30704 and grant NAGW-1919.\n\nPublished - 1997-06.pdf
", "abstract": "Pure samples of anomalous cosmic rays are measured by SAMP EX, both at latitudes where the geomagnetic\nfield acts as a particle rigidity filter, and in the radiation belt of trapped anomalous cosmic\nrays. We report updated measurements of the isotopic composition of anomalous cosmic ray N, 0,\nand Ne in these two regions, along with isotopic values measured over the poles, and compare our\nresults with those found by previous investigators and with those measured in other samples of solar\nand galactic material.", "date": "1997", "date_type": "published", "publisher": "Potchefstroom University, Space Research Unit", "id_number": "CaltechAUTHORS:20140703-225100732", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140703-225100732", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NASS-30704" }, { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "other_numbering_system": { "items": [ { "id": "1997-06", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Potgieter-M-S", "name": { "family": "Potgieter", "given": "M. S." } }, { "id": "Raubenheimer-C", "name": { "family": "Raubenheimer", "given": "C." } }, { "id": "van-der-Walt-D-J", "name": { "family": "van der Walt", "given": "D. J." } } ] }, "primary_object": { "basename": "1997-06.pdf", "url": "https://authors.library.caltech.edu/records/k4mbe-sjj25/files/1997-06.pdf" }, "pub_year": "1997", "author_list": "Leske, R. A.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/5eqkv-bkr42", "eprint_id": 46862, "eprint_status": "archive", "datestamp": "2023-08-19 00:45:27", "lastmod": "2023-10-26 19:57:00", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Menn-W", "name": { "family": "Menn", "given": "W." } }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "Golden-R-L", "name": { "family": "Golden", "given": "R. L." } }, { "id": "Hof-M", "name": { "family": "Hof", "given": "M." }, "orcid": "0000-0003-2884-3037" }, { "id": "Krombel-K-E", "name": { "family": "Krombel", "given": "K. E." } }, { "id": "Krizmanic-J-F", "name": { "family": "Krizmanic", "given": "J. F." } }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Ormes-J-F", "name": { "family": "Ormes", "given": "J. F." } }, { "id": "Rasmussen-I-L", "name": { "family": "Rasmussen", "given": "I. L." } }, { "id": "Reimer-O", "name": { "family": "Reimer", "given": "O." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Simon-M", "name": { "family": "Simon", "given": "M." } }, { "id": "Stochaj-S-J", "name": { "family": "Stochaj", "given": "S. J." } }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "Measurement of the Absolute Proton and Helium Flux at the Top of the Atmosphere using IMAX", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Space Research Unit. Provided by the NASA Astrophysics Data System.\n\nPublished - 1997-12.pdf
", "abstract": "The balloon-borne experiment \"IMAX\" launched from Lynn Lake, Canada in 1992 has been used to\nmeasure the cosmic ray proton and helium spectra from 0.2 GeV/n to about 200 GeV/n. The IMAX\napparatus was designed to search for antiprotons and light isotopes using a superconducting magnet\nspectrometer with ancillary scintillators, time-of-flight, and aerogel cherenkov detectors. Using\nredundant detectors an extensive examination of the instrument efficiency was carried out. We\npresent here the absolute spectra of protons and helium corrected to the top of the atmosphere.", "date": "1997", "date_type": "published", "publisher": "Space Research Unit, Potchefstroom University", "id_number": "CaltechAUTHORS:20140703-230305318", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140703-230305318", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1997-12", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Potgieter-M-S", "name": { "family": "Potgieter", "given": "M. S." } }, { "id": "Raubenheimer-C", "name": { "family": "Raubenheimer", "given": "C." } }, { "id": "van-der-Walt-D-J", "name": { "family": "van der Walt", "given": "D. J." } } ] }, "primary_object": { "basename": "1997-12.pdf", "url": "https://authors.library.caltech.edu/records/5eqkv-bkr42/files/1997-12.pdf" }, "pub_year": "1997", "author_list": "Menn, W.; Barbier, L. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/4064y-ab108", "eprint_id": 90922, "eprint_status": "archive", "datestamp": "2023-08-19 00:50:15", "lastmod": "2024-01-14 21:11:48", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Nelson-R-W", "name": { "family": "Nelson", "given": "Robert W." } }, { "id": "Vaughan-B-A", "name": { "family": "Vaughan", "given": "Brian A." } }, { "id": "Bildsten-L", "name": { "family": "Bildsten", "given": "Lars" } }, { "id": "Chakrabarty-D", "name": { "family": "Chakrabarty", "given": "Deepto" }, "orcid": "0000-0001-8804-8946" }, { "id": "Koh-Danny-T", "name": { "family": "Koh", "given": "Danny T." } }, { "id": "Prince-T-A", "name": { "family": "Prince", "given": "Thomas A." }, "orcid": "0000-0002-8850-3627" }, { "id": "Finger-M-H", "name": { "family": "Finger", "given": "Mark H." } }, { "id": "Wilson-R-B", "name": { "family": "Wilson", "given": "Robert B." } }, { "id": "Rubin-B-C", "name": { "family": "Rubin", "given": "Bradley C." } } ] }, "title": "On the Dramatic Spin-Up/Spin-Down Torque Reversals in BATSE Observations of Accretion Powered Pulsars", "ispublished": "unpub", "full_text_status": "restricted", "note": "\u00a9 Astronomical Society of the Pacific 1997.", "abstract": "X-ray pulsars are the only accreting magnetic stars where rotation torques induced by accretion are large enough to be measured on short timescales ~ days. They are thus unique laboratories for studying the interaction between an accretion disk and a stellar magnetosphere. We describe 5 years of continuous pulsar timing observations by the BATSE instrument on GRO which paint a strikingly different picture of pulsar spin behavior than understood from the previous 20 years of sparse observations. In particular, we find that more than half of the persistent pulsars we observe undergo dramatic torque reversals, switching suddenly between extended periods of steady spin-up and steady spin-down. Moreover, variations in pulsed flux are anticorrelated with torque in at least one system undergoing secular spin-down, GX1+4. This behavior contradicts standard accretion torque theory (Ghosh and Lamb 1979). A simple \u2013 albeit unconventional \u2013 hypothesis which naturally explains these observations is that the disks in these systems somehow alternate between epochs of prograde and retrograde rotation.", "date": "1997", "date_type": "published", "publisher": "Astronomical Society of the Pacific", "place_of_pub": "San Francisco, CA", "pagerange": "256-265", "id_number": "CaltechAUTHORS:20181115-131341275", "isbn": "9781886733411", "book_title": "Accretion Phenomena and Related Outflows", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20181115-131341275", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" }, { "id": "TAPIR" } ] }, "contributors": { "items": [ { "id": "Wickramsinghe-D-T", "name": { "family": "Wickramsinghe", "given": "Dayal T." } } ] }, "doi": "10.1017/s025292110004272x", "pub_year": "1997", "author_list": "Nelson, Robert W.; Vaughan, Brian A.; et el." }, { "id": "https://authors.library.caltech.edu/records/kcnfz-q5450", "eprint_id": 46861, "eprint_status": "archive", "datestamp": "2023-08-19 00:45:23", "lastmod": "2023-10-26 19:56:58", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Geomagnetic Cutoff Variations During Solar Energetic Particle Events - Implications for the Space Station", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Space Research Unit. Provided by the NASA Astrophysics Data System.\n\nThis work was supported by NASA under contract\nNAS5-30704 and grant NAGW-1919.\n\nPublished - 1997-11.pdf
", "abstract": "Measurements of the time-variability of the location of the geomagnetic cutoff during the large solar\nenergetic particle events of October and November 1992 using count rate data from the polar orbiting\nSAMPEX satellite are reviewed. Significant changes in the cutoff location of up to ~ 5\u00b0 in less than one\nday are observed, even during periods with only moderate geomagnetic disturbances. We discuss the\nimplications of such variations for the radiation hazard at the International Space Station, and we note\nthat real-time monitoring of the cutoff location might be u~ed to provide a warning of the increased\nradiation levels, sometimes hours before the Space Station itself reaches high magnetic latitudes.", "date": "1997", "date_type": "published", "publisher": "Potchefstroom University, Space Research Unit", "id_number": "CaltechAUTHORS:20140703-230120148", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140703-230120148", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-30704" }, { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "other_numbering_system": { "items": [ { "id": "1997-11", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Potgieter-M-S", "name": { "family": "Potgieter", "given": "M. S." } }, { "id": "Raubenheimer-C", "name": { "family": "Raubenheimer", "given": "C." } }, { "id": "van-der-Walt-D-J", "name": { "family": "van der Walt", "given": "D. J." } } ] }, "primary_object": { "basename": "1997-11.pdf", "url": "https://authors.library.caltech.edu/records/kcnfz-q5450/files/1997-11.pdf" }, "pub_year": "1997", "author_list": "Leske, R. A.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/f70kd-22x45", "eprint_id": 46857, "eprint_status": "archive", "datestamp": "2023-08-19 00:45:05", "lastmod": "2023-10-26 19:56:50", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "Evolution of the Energy Spectra of Anomalous Cosmic Rays in the Outer Heliosphere", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Space Research Unit. Provided by the NASA Astrophysics Data System.\n\nThis work was supported by NASA under\ncontract NAS7-918.\n\nPublished - 1997-07.pdf
", "abstract": "We present energy spectra of anomalous cosmic ray hydrogen, helium, and oxygen derived from data\ncollected from experiments on the Voyager and Pioneer spacecraft from 1993 through 1996. The sequence\nof energy spectra show the effects of decreasing modulation as the solar cycle approaches and\nreaches solar minimum conditions. We suggest a number of factors that may be responsible for the\nspectral evolution, including the approach of the spacecraft to the source region of the particles (the\nsolar wind termination shock), possible changes in the source strength, decreasing tilt of the neutral\ncurrent sheet, and changes in the diffusion mean free path. We find that the data are inconsistent with\nsource strength changes, but changes due to the other factors are possible and will require more complete\n2 and 3-dimensional propagation models to make quantitative assessments. We find evidence\nfor anomalous cosmic ray hydrogen up to energies as high as 400 MeV/nuc.", "date": "1997", "date_type": "published", "publisher": "Potchefstroom University, Space Research Unit", "id_number": "CaltechAUTHORS:20140703-225253772", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140703-225253772", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-918" } ] }, "other_numbering_system": { "items": [ { "id": "1997-07", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Potgieter-M-S", "name": { "family": "Potgieter", "given": "M. S." } }, { "id": "Raubenheimer-C", "name": { "family": "Raubenheimer", "given": "C." } }, { "id": "van-der-Walt-D-J", "name": { "family": "van der Walt", "given": "D. J." } } ] }, "primary_object": { "basename": "1997-07.pdf", "url": "https://authors.library.caltech.edu/records/f70kd-22x45/files/1997-07.pdf" }, "pub_year": "1997", "author_list": "Stone, E. C.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/segw5-5y559", "eprint_id": 46860, "eprint_status": "archive", "datestamp": "2023-08-19 00:45:19", "lastmod": "2023-10-26 19:56:56", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Selesnick-R-S", "name": { "family": "Selesnick", "given": "R. S." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } } ] }, "title": "Geomagnetically Trapped Anomalous Cosmic Rays at Solar Minimum", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Space Research Unit. Provided by the NASA Astrophysics Data System.\n\nThis work was supported by NASA under Cooperative Agreement 26979B with the Aerospace\nCorporation and grants NAS5-30704 and NAGW-1919 to the California Institute of Technology.\n\nPublished - 1997-10.pdf
", "abstract": "The geomagnetically trapped a...r10malous cosmic rays have been monitored continuously by\ninstrumentation on the SAMPEX satellite since its launch in mid-1992. With the approach of\nsolar mimmum the intensity has been increasing along with that of the interplanetary anomalous\ncosmic ray source. We compare the time variations of the two components using data from the\nMAST instrument: describe improved measurements of the spatiaJ distribution of the trapped\ncomponent, and discuss implications for the trapping and lifetime of the trapped component.", "date": "1997", "date_type": "published", "publisher": "Potchefstroom University, Space Research Unit", "id_number": "CaltechAUTHORS:20140703-225927438", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140703-225927438", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-30704" }, { "agency": "NASA", "grant_number": "NAGW-1919" }, { "agency": "NASA Cooperative Agreement", "grant_number": "26979B" }, { "agency": "Aerospace Corporation" } ] }, "other_numbering_system": { "items": [ { "id": "1997-10", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Potgieter-M-S", "name": { "family": "Potgieter", "given": "M. S." } }, { "id": "Raubenheimer-C", "name": { "family": "Raubenheimer", "given": "C." } }, { "id": "van-der-Walt-D-J", "name": { "family": "van der Walt", "given": "D. J." } } ] }, "primary_object": { "basename": "1997-10.pdf", "url": "https://authors.library.caltech.edu/records/segw5-5y559/files/1997-10.pdf" }, "pub_year": "1997", "author_list": "Selesnick, R. S.; Leske, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/en7kj-e1t09", "eprint_id": 46858, "eprint_status": "archive", "datestamp": "2023-08-19 00:45:10", "lastmod": "2023-10-26 19:56:52", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Klecker-B", "name": { "family": "Klecker", "given": "B." } }, { "id": "Marsden-R-G", "name": { "family": "Marsden", "given": "R. G." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Reames-D-V", "name": { "family": "Reames", "given": "D. V." } }, { "id": "Trattner-K-J", "name": { "family": "Trattner", "given": "K.J." } }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "Intensity Gradients of Anomalous Cosmic Ray Oxygen Throughout the Heliosphere", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Space Research Unit. Provided the NASA Astrophysics Data System.\n\nThis work was supported in part by NASA under contracts NAS7-918 and NASS-30704 and at the\nMax-Planck-Institut by the Bundesministerium fur Forschung und Technologie, Germany, under contract\n50 OC 90021.\n\nPublished - 1997-08.pdf
", "abstract": "We use anomalous cosmic ray oxygen energy spectra collected from five different locations in the\nheliosphere during three time periods to estimate the radial and latitudinal gradients of the particle\nintensities at three energies. The three periods include the two high-latitude passes of Ulysses over\nthe solar poles and the last few months of the cosmic ray oxygen data from Pioneer 10. The radial\ngradient is modeled as a power law in radius and the latitudinal gradient is assumed to be constant.\nThe gradients are analyzed in two ways: the first uses the actual average spacecraft latitudes and the\nsecond assumes the symmetry plane of the heliosphere is at 10\u00b0 S in heliolatitude. Reasonable fits\nare obtained under either assumption concerning the location of the symmetry plane, although the\nlatitudinal gradients are smaller by a factor of~ 2 if the symmetry plane is offset by l0\u00b0 S. The radial\ngradient exhibits a radial dependence of ~r^(-1) or r^(-2) depending on whether the symmetry plane is the\nhelioequator or not, respectively. The r^(-2) dependence is not consistent with the gradient measured\nin a similar part of the solar cycle ~20 years ago, suggesting that the helioequator is the likely plane\nof symmetry for these particles. The only significant difference in oxygen flux between polar passes\noccurs at < 10 Me V /nuc and is similar to that observed one year earlier in the outer heliosphere due\nto decreasing solar modulation.", "date": "1997", "date_type": "published", "publisher": "Potchefstroom University, Space Research Unit", "id_number": "CaltechAUTHORS:20140703-225449871", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140703-225449871", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-918" }, { "agency": "NASA", "grant_number": "NASS-30704" }, { "agency": "Max-Planck-Institut by the Bundesministerium fur Forschung und Technologie, Germany", "grant_number": "50 OC 90021" } ] }, "other_numbering_system": { "items": [ { "id": "1997-08", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Potgieter-M-S", "name": { "family": "Potgieter", "given": "M. S." } }, { "id": "Raubenheimer-C", "name": { "family": "Raubenheimer", "given": "C." } }, { "id": "van-der-Walt-D-J", "name": { "family": "van der Walt", "given": "D. J." } } ] }, "primary_object": { "basename": "1997-08.pdf", "url": "https://authors.library.caltech.edu/records/en7kj-e1t09/files/1997-08.pdf" }, "pub_year": "1997", "author_list": "Cummings, A. C.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/zghw6-yg338", "eprint_id": 46859, "eprint_status": "archive", "datestamp": "2023-08-19 00:45:14", "lastmod": "2023-10-26 19:56:54", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" } ] }, "title": "Rigidity Dependence of the Interplanetary Mean Free Path", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Space Research Unit. Provided by the NASA Astrophysics Data System.\n\nThis work was supported by NASA under contract NAS7-9l8.\n\nPublished - 1997-09.pdf
", "abstract": "We use energy spectra of anomalous cosmic rays derived from data from experiments on the Voyager\nand Pioneer spacecraft to inf er the rigidity dependence of the perpendicular interplanetary mean free\npath over the rigidity range ~0.3 to 4 GV. Data are from three intervals: 1993/157-209, 1994/157-\n313, and l 996/1-52. We use two techniques to estimate that the rigidity dependence is approximately\nproportional to R^2 at low rigidities with a flattening above ~1 GV, roughly consistent with recent\ntheoretical estimates (Bieber et al. 1995).", "date": "1997", "date_type": "published", "publisher": "Potchefstroom University, Space Research Unit", "id_number": "CaltechAUTHORS:20140703-225735470", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140703-225735470", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-918" } ] }, "other_numbering_system": { "items": [ { "id": "1997-09", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1997-09.pdf", "url": "https://authors.library.caltech.edu/records/zghw6-yg338/files/1997-09.pdf" }, "pub_year": "1997", "author_list": "Stone, E. C. and Cummings, A. C." }, { "id": "https://authors.library.caltech.edu/records/btr3p-8jr46", "eprint_id": 46843, "eprint_status": "archive", "datestamp": "2023-08-19 00:27:06", "lastmod": "2024-01-13 16:06:08", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Vanell-L-S", "name": { "family": "Varnell", "given": "Larry S." } }, { "id": "Mahoney-W-A", "name": { "family": "Mahoney", "given": "William A." } }, { "id": "Hull-E-L", "name": { "family": "Hull", "given": "Ethan L." } }, { "id": "Butler-J-F", "name": { "family": "Butler", "given": "Jack F." } }, { "id": "Wong-A-S", "name": { "family": "Wong", "given": "Ah San" } } ] }, "title": "Radiation Effects in CdZnTe Gamma-Ray Detectors Produced by 199 MeV Protons", "ispublished": "unpub", "full_text_status": "public", "keywords": "Radiation damage, gamma-ray astronomy, CdZnTe, ganuna-ray detectors", "note": "SPIE \u00a9 1996.\n\nPublished - 382502.pdf
", "abstract": "Many future space missions will use cadmium zinc telluride (CdZnTe) gamma-ray detectors because their operation at room temperature makes compact, lightweight detector systems possible. Even though instruments for space using CdZnTe detectors have already been built, the effect of the high- energy particle space environment on these detectors has not been measured. To determine the effect of energetic charged particles on these detectors, we have bombarded several CdZnTe detectors with 199 MeV protons at the Indiana University Cyclotron Facility. Planar detectors of area 1 cm^2 and thickness 2-3 mm from both eV products and Digirad were irradiated, along with a 2 multiplied by 2 array of proprietary design from Digirad. Using standard gamma-ray sources, the response of the detectors was measured before and after bombardment in steps up to fluences of 5 multiplied by 10^9 p cm^(-2). Significant effects from the proton irradiation were observed in the gamma-ray spectra. In particular, the peak positions of the lines in the spectrum were shifted downward proportional to the fluence. The explanation is almost certainly the production of electron traps by the high energy proton interactions, resulting in a decrease of the mobility-lifetime (\u00b5\u03c4) ) product of the electrons. Calculations were made to model the effect of a decrease in electron trapping length on the spectrum.", "date": "1996-10-18", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "424-431", "id_number": "CaltechAUTHORS:20140703-221232433", "isbn": "9780819421944", "book_title": "Gamma-Ray and Cosmic-Ray Detectors, Techniques, and Missions", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140703-221232433", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1996-29", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Ramsey-B-D", "name": { "family": "Ramsey", "given": "Brian D." } }, { "id": "Panell-T-A", "name": { "family": "Parnell", "given": "Thomas A." } } ] }, "doi": "10.1117/12.254014", "primary_object": { "basename": "382502.pdf", "url": "https://authors.library.caltech.edu/records/btr3p-8jr46/files/382502.pdf" }, "pub_year": "1996", "author_list": "Varnell, Larry S.; Mahoney, William A.; et el." }, { "id": "https://authors.library.caltech.edu/records/feb8y-pe206", "eprint_id": 46844, "eprint_status": "archive", "datestamp": "2023-08-19 00:27:10", "lastmod": "2024-01-13 16:06:10", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wong-A-S", "name": { "family": "Wong", "given": "A-S." } }, { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "F. A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Varnell-L-S", "name": { "family": "Varnell", "given": "L. S." } } ] }, "title": "Effects or Proton-Induced Radiation Damage on Cadmium Zinc Telluride Pixel Detectors", "ispublished": "unpub", "full_text_status": "public", "note": "SPIE \u00a9 1996.\n\nPublished - 1996-30.pdf
", "abstract": "Cadmium zinc telluride (CdZnTe) is a room temperature solid state material with many properties attractive to space- borne astrophysical instrumentation. Irradiation of monolithic CdZnTe detectors with 199 MeV protons shows that proton-induced radiation damage causes an increase in electron trapping in the material. Small-pixel and strip CdZnTe detectors which rely on efficient electron collection are particularly sensitive to changes in the electron mean free path, which can result in significant changes in the spectral response. Using a charge transport model, we calculate the effects of the observed radiation damage on spectral response for pixel detectors of several geometries. A degradation in spectral response is observed which is most pronounced for small-pixel detectors. The magnitude of the effects indicate that depending on pixel size and the desire for good spectral performance annealing may be necessary to maintain good detector performance after approximately 1 - 2 years in low-earth orbit.", "date": "1996-10-18", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "442-448", "id_number": "CaltechAUTHORS:20140703-221518819", "isbn": "9780819421944", "book_title": "Gamma-Ray and Cosmic-Ray Detectors, Techniques, and Missions", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140703-221518819", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1996-30", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Ramsey-B-D", "name": { "family": "Ramsey", "given": "Brian D." } }, { "id": "Parnell-T-A", "name": { "family": "Parnell", "given": "Thomas A." } } ] }, "doi": "10.1117/12.254016", "primary_object": { "basename": "1996-30.pdf", "url": "https://authors.library.caltech.edu/records/feb8y-pe206/files/1996-30.pdf" }, "pub_year": "1996", "author_list": "Wong, A-S.; Harrison, F. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/n3azy-84130", "eprint_id": 46842, "eprint_status": "archive", "datestamp": "2023-08-19 00:26:57", "lastmod": "2024-01-13 16:06:06", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "Mark E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "Eric R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "Walter R." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "Alan C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Dougherty-B-L", "name": { "family": "Dougherty", "given": "Brian L." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "Richard A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "Richard A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "Edward C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "Tycho T." } } ] }, "title": "Two-Dimensional Position-Sensitive Silicon Detectors For The ACE Solar Isotope Spectrometer", "ispublished": "unpub", "full_text_status": "public", "keywords": "silicon detectors, position-sensitive detectors", "note": "SPIE \u00a9 1996. \n\nThis research was supported by the National Aeronautics and Space Administration at the California Institute of\nTechnology (under contract NAS5-32626 and grant NAGW-1919), the Jet Propulsion Laboratory, and the Goddard\nSpace Flight Center. We wish to acknowledge C. Wilburn, A. Lucas, and the rest of the personnel at Micron\nSemiconductor for their close cooperation and very significant efforts in developing state-of-the-art position sensitive silicon detectors for SIS. We are grateful to the staffs of the GSI and MSU accelerators, and particularly to D. Schardt and N. Anantaraman\u00b7, for their support of the SIS calibrations. We thank D. Aalami, G. Allbritton, B. Gauld, B. Keeman, S. Kleinfelder, M. Madden, H. Marshall, B. Milliken, R. Radocinski, B. Sears, and S. Shuman for their contributions to various aspects of developing and testing the matrix detectors and associated electronics.\n\nPublished - 1996-26.pdf
", "abstract": "Two-dimensional position-sensitive silicon detectors ('matrix detectors') have been designed, procured, and tested as part of the development of the solar isotope spectrometer (SIS) instrument for NASA's Advanced Composition Explorer (ACE) mission. Important characteristics of these devices include: thickness approximately 50 - 90 micrometer, active area 34 cm^2, 64 strips on each surface with 1 mm strip pitch. The SIS instrument uses four such detectors, processing signals from each of the 512 individual strips with a separate 12-bit pulse height analyzer implemented with custom-designed VLSI circuits. A set of 25 matrix detectors have been characterized through a variety of tests intended both toe select the best candidates for use in the flight instrument and to provide the calibrations needed to interpret flight data. We discuss the design of the SIS matrix detectors and present selected results from the detector tests that have been performed.", "date": "1996-10-18", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "176-187", "id_number": "CaltechAUTHORS:20140703-220904845", "isbn": "9780819421944", "book_title": "Gamma-Ray and Cosmic-Ray Detectors, Techniques, and Missions", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140703-220904845", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-32626" }, { "agency": "NASA", "grant_number": "NAGW-1919" }, { "agency": "JPL" }, { "agency": "Goddard Space Flight Center" } ] }, "other_numbering_system": { "items": [ { "id": "1996-26", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Ramsey-B-D", "name": { "family": "Ramsey", "given": "Brian D." } }, { "id": "Parnell-T-A", "name": { "family": "Parnell", "given": "Thomas A." } } ] }, "doi": "10.1117/12.253977", "primary_object": { "basename": "1996-26.pdf", "url": "https://authors.library.caltech.edu/records/n3azy-84130/files/1996-26.pdf" }, "pub_year": "1996", "author_list": "Wiedenbeck, Mark E.; Christian, Eric R.; et el." }, { "id": "https://authors.library.caltech.edu/records/72kv3-jah68", "eprint_id": 46839, "eprint_status": "archive", "datestamp": "2023-08-19 00:26:52", "lastmod": "2024-01-13 16:06:04", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Dougherty-B-L", "name": { "family": "Dougherty", "given": "Brian L." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "Eric R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "Alan C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "Richard A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "Richard A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Milliken-B-D", "name": { "family": "Milliken", "given": "Barrett D." } }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "Tycho T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "Mark E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Characterization Of Large-Area Silicon Ionization Detectors For The ACE Mission", "ispublished": "unpub", "full_text_status": "public", "keywords": "large-area lithium-drifted and high-purity ion-implanted silicon ionization detectors, dead-layers", "note": "SPIE \u00a9 1996. \n\nThis research was supported by the National Aeronautics and Space Administration at the California Institute of\nTechnology (under contract NAS5-32626 and grant NAGW-1919), the Jet Propulsion Laboratory, and the Goddard Space\nFlight Center. BLD is grateful for support from the National Research Council. The Si(Li) detectors were fabricated at the Lawrence Berkeley National Laboratory, and the high-purity detectors were purchased from Micron Semiconductor, Ltd. of Sussex in the United Kingdom. Special thanks go to J. Walton, Y. Wong; C. Wilburn and A. Lucas for making the$e detectors. We thank G. Allbritton, M. Madden and B. Nahory for contributions in testing detectors and in taking data at MSU, as well as the personnel at the NSCL for their support. We also thank B. Sears for aid in analyzing this data.\n\nPublished - 1996-23.pdf
", "abstract": "We report on extensive tests of large-area (10 cm diameter) high-purity ion-implanted silicon detectors for the solar isotope spectrometer (SIS), and lithium-drifted silicon detectors for the cosmic ray isotope spectrometer (CRIS), which are under development for launch on the advanced composition explorer (ACE) mission. Depletion and breakdown characteristics versus bias were studied, as were long-term current and noise stability in a thermally cycled vacuum. Dead-layer and total thickness maps were obtained using laser interferometry, beams of energetic argon nuclei and radioactive sources of alpha particles. Results, selection criteria, and yields are presented.", "date": "1996-10-18", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "188-198", "id_number": "CaltechAUTHORS:20140703-215930019", "isbn": "9780819421944", "book_title": "Gamma-Ray and Cosmic-Ray Detectors, Techniques, and Missions", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140703-215930019", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-32626" }, { "agency": "NASA", "grant_number": "NAGW-1919" }, { "agency": "JPL" }, { "agency": "Goddard Space Flight Center" }, { "agency": "National Research Council" } ] }, "other_numbering_system": { "items": [ { "id": "1996-23", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Ramsey-B-D", "name": { "family": "Ramsey", "given": "Brian D." } }, { "id": "Parnell-T-A", "name": { "family": "Parnell", "given": "Thomas A." } } ] }, "doi": "10.1117/12.253978", "primary_object": { "basename": "1996-23.pdf", "url": "https://authors.library.caltech.edu/records/72kv3-jah68/files/1996-23.pdf" }, "pub_year": "1996", "author_list": "Dougherty, Brian L.; Christian, Eric R.; et el." }, { "id": "https://authors.library.caltech.edu/records/r13c0-cn125", "eprint_id": 46846, "eprint_status": "archive", "datestamp": "2023-08-19 00:15:59", "lastmod": "2024-01-13 16:06:14", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Snow-F", "name": { "family": "Snow", "given": "Frank" } }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "Thomas L." } }, { "id": "Steck-J-A", "name": { "family": "Steck", "given": "Jane A." } }, { "id": "Maury-J-L", "name": { "family": "Maury", "given": "Jesse L." } } ] }, "title": "Enhancing the ACE Control Center for the Multiple uses of Spacecraft Integration and Test and Mission and Science Operations", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1996 European Space Agency. Provided by the NASA Astrophysics Data System.\n\nPublished - 1996-32.pdf
", "abstract": "NASA, at the direction of its Administrator, is undertaking a grand challenge of change for \"faster, better, cheaper; strong emphasis is now being placed on staying within cost\nprojections while still meeting schedule and performance goals. This led NASA to mandate fixed-price, capped-cost programs. The Advanced Composition Explorer (ACE) is the first mission to be funded in this manner. Consequently, the ACE Project has sought novel approaches and techniques to constrain costs without compromising schedule or science goals. A key approach that has been adopted is novel, multiple reusage of the ACE control center subsystem.\n\nACE will use a version of the Transportable Payload Operations Control Center (TPOCC) for its mission operations. It was determined in Phase 8 of the ACE Project that a potential existed for substantial savings if the adaptation of the TPOCC for ACE Mission Operations could include adapting it as well for use as the primary component in the Ground Support Equipment for\nIntegration and Testing of the ACE Spacecraft and, at the same time, also adapting it be the basic component in the ACE Science Center; thus, realizing three separate uses for essentially the same system. Implementing this approach required enhancing the TPOCC requirements, significant\nchanges in its development schedule, and changes in the allocation and activities of personnel responsible for development of ACE operations. This paper discusses how these issues were addressed, the unforeseen problems that have been encountered, how these problems have been\nresolved, and an evaluation of what this approach portends for application to future missions.", "date": "1996-09", "date_type": "published", "publisher": "European Space Agency", "id_number": "CaltechAUTHORS:20140703-221959133", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140703-221959133", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1996-32", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Guyenne-T-D", "name": { "family": "Guyenne", "given": "T.-D." } } ] }, "primary_object": { "basename": "1996-32.pdf", "url": "https://authors.library.caltech.edu/records/r13c0-cn125/files/1996-32.pdf" }, "pub_year": "1996", "author_list": "Snow, Frank; Garrard, Thomas L.; et el." }, { "id": "https://authors.library.caltech.edu/records/f576x-waf34", "eprint_id": 46239, "eprint_status": "archive", "datestamp": "2023-08-19 00:08:14", "lastmod": "2024-01-13 16:05:34", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Baker-D-N", "name": { "family": "Baker", "given": "D. N." } }, { "id": "Blake-J-B", "name": { "family": "Blake", "given": "J. B." } }, { "id": "Callis-L-B", "name": { "family": "Callis", "given": "L. B." } }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "Hovestadt-D", "name": { "family": "Hovestadt", "given": "D." } }, { "id": "Kanekal-S-G", "name": { "family": "Kanekal", "given": "S." } }, { "id": "Klecker-B", "name": { "family": "Klecker", "given": "B." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Nakamura-R", "name": { "family": "Nakamura", "given": "R." } } ] }, "title": "New Magnetospheric Results from the SAMPEX Mission", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1996 American Institute of Physics. \n\nWe thank the many individuals who have \ncontributed so extensively to the success of SAMPEX. We especially thank G. Mason, M. Lennard, and D. Hamilton at the University of Maryland, E. Stone at Caltech, and R. Boughner \nat Langley Research Center for major contributions to this research. This work was supported at the U. of Colorado by \nNASA grant number NAG5-2681. The authors thank W. Imhof, \nA. Lazarus, and E. Gaines for data and useful discussions on this \nwork.\n\nPublished - 1995-06.pdf
", "abstract": "Results are described from energetic particle detectors onboard the Solar, Anomalous, and Magnetospheric Particle Explorer (SAMPEX) satellite. Electron data are shown for energies E>400 keV in the outer zone of electron trapping (L\u22733). The processes by which electrons are accelerated to very high energies (E>1 MeV) are discussed. Data are sorted according to L\u2010values and are compared with concurrent solar wind and geomagnetic conditions. Data from SAMPEX are also compared to GOES and UARS measurements. It is found that high\u2010speed solar wind streams drive the acceleration and recirculation of electrons throughout the outer zone on time scales of one day (or less). Very high time resolution measurements from SAMPEX show the very sporadic nature of magnetosphere\u2010atmosphere coupling processes.", "date": "1996-07-25", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "3-11", "id_number": "CaltechAUTHORS:20140612-111527257", "isbn": "1-56396-540-2", "book_title": "Workshop on the Earth's trapped particle environment", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140612-111527257", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-2681" } ] }, "other_numbering_system": { "items": [ { "id": "1995-06", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Reeves-G-T", "name": { "family": "Reeves", "given": "Gregory T." } } ] }, "doi": "10.1063/1.51538", "primary_object": { "basename": "1995-06.pdf", "url": "https://authors.library.caltech.edu/records/f576x-waf34/files/1995-06.pdf" }, "pub_year": "1996", "author_list": "Baker, D. N.; Blake, J. B.; et el." }, { "id": "https://authors.library.caltech.edu/records/7are2-hvb71", "eprint_id": 46168, "eprint_status": "archive", "datestamp": "2023-08-19 00:08:09", "lastmod": "2024-01-13 16:05:32", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Selesnick-R-S", "name": { "family": "Selesnick", "given": "R. S." } }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "Observations of Geomagnetically Trapped Anomalous Cosmic Rays by SAMPEX", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1996 American Institute of Physics.\n\nPublished online 25 July 1996.\n\nThis work was supported by NASA \nunder contract NAS5-30704 and grant NAGW-1919.\n\nPublished - 1994-12.pdf
", "abstract": "he first detailed measurements of a belt of geomagnetically trapped heavy ions that originated as interplanetary anomalous cosmic rays (ACRs) are being made by the polar orbiting satellite SAMPEX. The singly ionized interplanetary ACRs are trapped after losing electrons in the upper atmosphere. Their subsequent lifetime against energy loss by ionization of the atmosphere allows them to reach a substantially higher intensity than in interplanetary space. The ACR composition, which includes only elements with high first ionization potentials, is reflected in the trapped ACRs with some bias due to the trapping mechanism. The elements O, N, and Ne are present, while the lower atomic number elements, He and C, are either absent or substantially depleted relative to their interplanetary abundances. The trapping mechanism also determines the location of the ACR belt, which is confined to a narrow region near L=2, and the pitch\u2010angle distribution of the trapped ACRs, which is nearly isotropic except for the well\u2010defined loss cones. The intensities of the trapped and interplanetary ACRs have been measured by SAMPEX since its July, 1992 launch. Both have been steadily increasing with the approach of the minimum of the solar sunspot cycle.", "date": "1996-07-25", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "New York, NY", "pagerange": "155-160", "id_number": "CaltechAUTHORS:20140609-164123573", "isbn": "1-56396-540-2", "book_title": "Proceedings of the Workshop on the Earth's Trapped Particle Environment", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140609-164123573", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-30704" }, { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "other_numbering_system": { "items": [ { "id": "1994-12", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Reeves-G-D", "name": { "family": "Reeves", "given": "Geoffrey D." } } ] }, "doi": "10.1063/1.51548", "primary_object": { "basename": "1994-12.pdf", "url": "https://authors.library.caltech.edu/records/7are2-hvb71/files/1994-12.pdf" }, "pub_year": "1996", "author_list": "Selesnick, R. S.; Cummings, J. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/8xxqx-0ym48", "eprint_id": 46833, "eprint_status": "archive", "datestamp": "2023-08-20 07:32:31", "lastmod": "2024-01-13 16:06:02", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Unwin-S-C", "name": { "family": "Unwin", "given": "S. C." } }, { "id": "Wehrle-A-E", "name": { "family": "Wehrle", "given": "A. E." } }, { "id": "Zensus-J-A", "name": { "family": "Zensus", "given": "J. A." } }, { "id": "Lobanov-A-P", "name": { "family": "Lobanov", "given": "A. P." } } ] }, "title": "Variability in the X-ray Flux of Quasar 3C345: Inverse-Compton Emission from the Parsec-Scale Jet?", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1996 Astronomical Society of the Pacific. Provided by the NASA Astrophysics Data System. \n\nWe are grateful to Hugh and Margo Aller (U. Michigan),\nand Harri Ter\u00e4sranta (U. Helsinki) for providing radio data in advance of publication. Greg Madejski (GSFC) helped with systematic analysis of the ROSAT data.\n\nPublished - 1996-17.pdf
", "abstract": "We present the results of the first systematic study of variability in the X-ray emission from the 'superluminal' quasar 3C 345. Its power-law 1-keV X-ray emission varies by a factor of two on a timescale of years, but with no change in spectral index, closely following the high-frequency\nradio flux. Using VLBI images, we show that one of the superluminal 'knots' in the jet (at a distance of \u2248 15 pc from the nucleus), rather than the nucleus, produces most of the observed X-rays, via the synchrotron self-Compton process. We show that this knot accelerates as it moves away from the nucleus, along along a path at \u2248 10\u00b0 from the line of sight.", "date": "1996-05", "date_type": "published", "publisher": "Astronomical Society of the Pacific", "place_of_pub": "San Francisco, CA", "pagerange": "317-322", "id_number": "CaltechAUTHORS:20140703-214604613", "isbn": "1-886733-30-9", "book_title": "Blazar Continuum Variability", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140703-214604613", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1996-17", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1996-17.pdf", "url": "https://authors.library.caltech.edu/records/8xxqx-0ym48/files/1996-17.pdf" }, "pub_year": "1996", "author_list": "Unwin, S. C.; Wehrle, A. E.; et el." }, { "id": "https://authors.library.caltech.edu/records/wn9t0-af998", "eprint_id": 46482, "eprint_status": "archive", "datestamp": "2023-08-20 06:55:31", "lastmod": "2024-01-13 16:05:41", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } } ] }, "title": "Anomalous Cosmic Rays: A Sample of Interstellar Matter", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1996 Astronomical Society of the Pacific.\n\nWe appreciate contributions to this work by A. C.\nCummings, R. S. Selesnick, E. C. Stone, and T. T. van Rosenvinge. This work\nwas supported by NASA under contract NAS5-30704 and grant NAGW-1919.\n\nPublished - 381.pdf
", "abstract": "Anomalous cosmic rays are a sample of the neutral interstellar\nmedium that has been accelerated to energies of ~1 to 50 MeV/nuc.\nA comparison of ^(22)Ne/^(20)Ne measurements from various sources implies\nthat galactic cosmic rays with energies > 100 MeV/nuc are not simply\nan accelerated sample of the local interstellar medium.", "date": "1996", "date_type": "published", "publisher": "Astronomical Society of the Pacific", "place_of_pub": "San Francisco, CA", "pagerange": "381-384", "id_number": "CaltechAUTHORS:20140624-141911693", "isbn": "1-886733-20-1", "book_title": "Cosmic Abundances", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140624-141911693", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-30704" }, { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "other_numbering_system": { "items": [ { "id": "1996-02", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Holt-S-S", "name": { "family": "Holt", "given": "Stephen S." } }, { "id": "Sonneborn-G", "name": { "family": "Sonneborn", "given": "George" } } ] }, "primary_object": { "basename": "381.pdf", "url": "https://authors.library.caltech.edu/records/wn9t0-af998/files/381.pdf" }, "pub_year": "1996", "author_list": "Mewaldt, R. A.; Leske, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/ebhqe-z9e98", "eprint_id": 52359, "eprint_status": "archive", "datestamp": "2023-08-20 06:56:46", "lastmod": "2023-10-18 19:47:47", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "Cosmic Rays", "ispublished": "unpub", "full_text_status": "public", "note": "Submitted - 1997-57.pdf
", "abstract": "Cosmic rays are high energy charged particles, originating in outer\nspace, that travel at nearly the speed of light and strike the Earth\nfrom all directions. Most cosmic rays are the nuclei of atoms,\nranging from the lightest to the heaviest elements in the periodic\ntable. Cosmic rays also include high energy electrons, positrons, and\nother subatomic particles. The term \"cosmic rays\" usually refers to\ngalactic cosmic rays, which originate in sources outside the solar\nsystem, distributed throughout our Milky Way galaxy. However, this\nterm has also come to include other classes of energetic particles in\nspace, including nuclei and electrons accelerated in association with\nenergetic events on the Sun (called solar energetic particles), and\nparticles accelerated in interplanetary space.", "date": "1996", "date_type": "published", "publisher": "Simon & Schuster Macmillan", "place_of_pub": "New York, NY", "id_number": "CaltechAUTHORS:20141203-160046981", "isbn": "9780028973593", "book_title": "Macmillan Encyclopedia of Physics", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141203-160046981", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1997-57", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Rigden-J-S", "name": { "family": "Rigden", "given": "John S." } } ] }, "primary_object": { "basename": "1997-57.pdf", "url": "https://authors.library.caltech.edu/records/ebhqe-z9e98/files/1997-57.pdf" }, "pub_year": "1996", "author_list": "Mewaldt, R. A." }, { "id": "https://authors.library.caltech.edu/records/xptp7-5t656", "eprint_id": 44003, "eprint_status": "archive", "datestamp": "2023-08-20 06:54:50", "lastmod": "2024-01-13 06:06:18", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Measurements of the ionic charge states of solar energetic particles at 15\u201370 MeV/nucleon using the geomagnetic field", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1996 American Institute of Physics.\n\nThis work was supported by NASA under contract NAS5-30704 and grant NAGW-1919.\n\nPublished - 1.50991.pdf
", "abstract": "The mean charge states of abundant heavy ions with \u223c15\u201370 MeV nucleon ^(\u22121) in the two large solar energetic particle events of 1992 October 30 and November 2 have been determined using measurements of the invariant latitude of the cosmic ray geomagnetic cutoffs as a function of time, particle energy, and element from the Mass Spectrometer Telescope on the polar\u2010orbiting SAMPEX satellite. The deduced charge state values are in good agreement with the mean values measured directly in previous solar energetic particle events at much lower energies of \u223c1 MeV nucleon ^(\u22121), with inferred equilibrium source temperatures of typically 2\u00d710^6 K. This result provides additional evidence that solar energetic particles in gradual\u2010type events consist of accelerated coronal material.", "date": "1996", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Woodbury, NY", "pagerange": "86-95", "id_number": "CaltechAUTHORS:20140226-091558357", "isbn": "1-56396-542-9", "book_title": "High Energy Solar Physics", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140226-091558357", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-30704" }, { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "other_numbering_system": { "items": [ { "id": "1995-45", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Ramaty-R", "name": { "family": "Ramaty", "given": "R." } }, { "id": "Mandzhavidze-N", "name": { "family": "Mandzhavidze", "given": "Natalie" } }, { "id": "Hua-X-M", "name": { "family": "Hua", "given": "Xin-Min" } } ] }, "doi": "10.1063/1.50991", "primary_object": { "basename": "1.50991.pdf", "url": "https://authors.library.caltech.edu/records/xptp7-5t656/files/1.50991.pdf" }, "pub_year": "1996", "author_list": "Leske, R. A.; Cummings, J. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/vkz17-wk666", "eprint_id": 46848, "eprint_status": "archive", "datestamp": "2023-08-20 06:55:48", "lastmod": "2024-01-13 16:06:16", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Hink-P-L", "name": { "family": "Hink", "given": "P. L." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Ormes-J-R", "name": { "family": "Ormes", "given": "J. R." } }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } } ] }, "title": "ENergetic Trans-Iron Composition Explorer (ENTICE): A mission concept", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 (1996) COPYRIGHT SPIE.\n\nAccepted Version - 1996-35.pdf
", "abstract": "We describe a mission concept which has as its primary objective the measurement of the elemental abundances of galactic and solar energetic nuclei over the charge range of 14 less than or equal to Z less than or equal to 92. The instruments would have sufficient collecting power to improve the number of particles collected over that of previous measurements by more than an order of magnitude and, more important, will have the capability to clearly distinguish individual elements. These measurements are of fundamental importance to an understanding of the origin, nucleosynthesis, and acceleration of energetic galactic and solar particles.", "date": "1996", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers (SPIE)", "id_number": "CaltechAUTHORS:20140703-222609991", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140703-222609991", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1996-35", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Ramsey-B-D", "name": { "family": "Ramsey", "given": "B. D." } }, { "id": "Parnell-T-A", "name": { "family": "Parnell", "given": "T. A." } } ] }, "doi": "10.1117/12.253969", "primary_object": { "basename": "1996-35.pdf", "url": "https://authors.library.caltech.edu/records/vkz17-wk666/files/1996-35.pdf" }, "pub_year": "1996", "author_list": "Binns, W. R.; Hink, P. L.; et el." }, { "id": "https://authors.library.caltech.edu/records/qgass-1nm32", "eprint_id": 46487, "eprint_status": "archive", "datestamp": "2023-08-20 06:55:44", "lastmod": "2024-01-13 16:05:47", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "F. A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Grindlay-J-E", "name": { "family": "Grindlay", "given": "J. E." }, "orcid": "0000-0002-1323-5314" }, { "id": "Gehrels-N", "name": { "family": "Gehrels", "given": "N." } }, { "id": "Hailey-C-J", "name": { "family": "Hailey", "given": "C. J." } }, { "id": "Mahoney-W-A", "name": { "family": "Mahoney", "given": "W. A." } }, { "id": "Prince-T-A", "name": { "family": "Prince", "given": "T. A." }, "orcid": "0000-0002-8850-3627" }, { "id": "Ramsey-B-D", "name": { "family": "Ramsey", "given": "B. D." } }, { "id": "Ubertini-P", "name": { "family": "Ubertini", "given": "P." } }, { "id": "Skinner-G-K", "name": { "family": "Skinner", "given": "G. K." } }, { "id": "Weisskopf-M-C", "name": { "family": "Weisskopf", "given": "M. C." } } ] }, "title": "Gamma-Ray Burst Studies with the Energetic X-ray Imaging Survey Telescope (EXIST)", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1996 American Institute of Physics. \n\nPublished online 01 August 1996.\n\nPublished - 1996-06.pdf
", "abstract": "The Energetic X-ray Imaging Survey Telescope (EXIST) is a sensitive, wide field of view hard X-ray (10\u2013600 keV) coded-aperture telescope. This paper describes the capabilities and characteristics of EXIST as proposed to NASA's Medium\u2014Class Explorer (MIDEX) program. A larger version of EXIST is being studied as a NASA New Mission Concept. In addition to its primary science objective, which is to carry out the first high-sensitivity (0.5 mCrab) hard X-ray imaging survey (14' resolution) of the entire sky, EXIST has a number of important Gamma-Ray burst (GRB) objectives which include: 1) A sensitive observation toward M31 to search for an extended burst halo to confirm or eliminate models in which isotropically emitting burst sources are distributed in an extended (\u223c200\u2013400\u2009kpc) Galactic halo. 2) Sensitive wide FOV monitoring to probe the GRB long N -log P distribution an order of magnitude fainter than BATSE 3) Rapid dissemination of accurate (30\u2032\u2032) burst positions for ground-based followup. 4) High time-resolution (100 \u03bcsec) burst observations. 5) High quality (\u0394E=4.4\u2009keV FWHM @ 60 keV) measurements of GRB spectra.", "date": "1996", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Woodbury, NY", "pagerange": "829-833", "id_number": "CaltechAUTHORS:20140624-145012284", "isbn": "1-56396-685-9", "book_title": "Gamma-Ray Bursts", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140624-145012284", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1996-06", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.1063/1.51599", "primary_object": { "basename": "1996-06.pdf", "url": "https://authors.library.caltech.edu/records/qgass-1nm32/files/1996-06.pdf" }, "pub_year": "1996", "author_list": "Harrison, F. A.; Grindlay, J. E.; et el." }, { "id": "https://authors.library.caltech.edu/records/xh2wy-f1t30", "eprint_id": 46849, "eprint_status": "archive", "datestamp": "2023-08-22 10:44:24", "lastmod": "2024-01-13 16:06:18", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Baker-D-N", "name": { "family": "Baker", "given": "D. N." } }, { "id": "Kanekal-S-G", "name": { "family": "Kanekal", "given": "S. G." } }, { "id": "Looper-M-D", "name": { "family": "Looper", "given": "M. D." } }, { "id": "Blake-J-B", "name": { "family": "Blake", "given": "J. B." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "Jovian, Solar, and other Possible Sources of Radiation Belt Particles", "ispublished": "unpub", "full_text_status": "public", "keywords": "Van Allen radiation belts; Magnetosphere", "note": "\u00a9 1996 American Geophysical Union.\n\n\nThis work was supported by NASA grants\nthrough the SAMPEX program. We thank X. Li for useful discussions.\n\nPublished - Baker_1996p49.pdf
", "abstract": "It is well known that electrons, protons, and heavier ions can be accelerated to\nhigh energies (\u22731 MeV) throughout the solar system by a variety of mechanisms.\nWe review several of the sources of energetic ions and electrons that can produce\nenhanced fluxes of particles near the Earth's orbit. Solar energetic particles and\nparticles accelerated at interplanetary shock waves are considered. We also review\nthe properties and potential terrestrial influence of Jovian electrons. Recent measurements\nfrom the SAMPEX spacecraft in low-Earth orbit are examined to look for\nextraterrestrial sources of electrons and ions. We find clear evidence of both solar\nand Jovian electrons at high latitudes and at high altitudes around the Earth, but\nthe durably trapped outer zone electron population seems best and most completely\nexplained by an internal acceleration mechanism.", "date": "1996", "date_type": "published", "publisher": "American Geophysical Union", "place_of_pub": "Washington, DC", "pagerange": "49-55", "id_number": "CaltechAUTHORS:20140703-222947862", "isbn": "9780875900797", "book_title": "Radiation belts: models and standards", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140703-222947862", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA SAMPEX Program" } ] }, "other_numbering_system": { "items": [ { "id": "1996-36", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Lemaire-J", "name": { "family": "Lemaire", "given": "J." } }, { "id": "Heynderickx-D", "name": { "family": "Heynderickx", "given": "D." } }, { "id": "Baker-D-N", "name": { "family": "Baker", "given": "Daniel N." } } ] }, "doi": "10.1029/GM097p0049", "primary_object": { "basename": "Baker_1996p49.pdf", "url": "https://authors.library.caltech.edu/records/xh2wy-f1t30/files/Baker_1996p49.pdf" }, "pub_year": "1996", "author_list": "Baker, D. N.; Kanekal, S. G.; et el." }, { "id": "https://authors.library.caltech.edu/records/9r0xx-btd81", "eprint_id": 47484, "eprint_status": "archive", "datestamp": "2023-08-20 06:55:53", "lastmod": "2023-10-26 20:38:35", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cohen-C-M-S", "name": { "family": "Cohen", "given": "C. M. S." }, "orcid": "0000-0002-0978-8127" }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. R." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Dougherty-B-L", "name": { "family": "Dougherty", "given": "Brian L." } }, { "id": "Gauld-B", "name": { "family": "Gauld", "given": "B." } }, { "id": "Grumm-R", "name": { "family": "Grumm", "given": "R." } }, { "id": "Kecman-B", "name": { "family": "Kecman", "given": "B." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Milliken-B", "name": { "family": "Milliken", "given": "B." } }, { "id": "Radocinski-R-G", "name": { "family": "Radocinski", "given": "R. G." } }, { "id": "Shuman-S", "name": { "family": "Shuman", "given": "S." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Thayer-M-R", "name": { "family": "Thayer", "given": "M. R." } }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "The Solar Isotope Spectrometer (SIS)", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Space Research Unit. Provided By the NASA Astrophysics Data System. \n\nThis work was supported by the National Aeronautics and Space Administration at the California Institute\nof Technolology (under contract NAS5-32626 and grant NAGW-1919), the Jet Propulsion Laboratory,\nand the Goddard Space Flight Center.\n\nPublished - 1997-17.pdf
", "abstract": "The Solar Isotope Spectrometer (SIS) is scheduled for launch on NASA's Advanced Composition Explorer (ACE) mission. SIS has two solid-state telescopes that are designed to measure the elemental and isotopic composition of solar energetic particles and anomalous cosmic rays in the energy range from rv 10 to 100 Me V /nucleon, including elements from He to Zn (2\u2264Z\u226430). This paper presents\na brief description of the design and operation of SIS.", "date": "1996", "date_type": "published", "publisher": "Potchefstroom University, Space Research Unit", "id_number": "CaltechAUTHORS:20140724-155533705", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140724-155533705", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-32626" }, { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "other_numbering_system": { "items": [ { "id": "1997-17", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Potgieter-M-S", "name": { "family": "Potgieter", "given": "M. S." } } ] }, "primary_object": { "basename": "1997-17.pdf", "url": "https://authors.library.caltech.edu/records/9r0xx-btd81/files/1997-17.pdf" }, "pub_year": "1996", "author_list": "Cohen, C. M. S.; Christian, E. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/ny774-x0h91", "eprint_id": 103112, "eprint_status": "archive", "datestamp": "2023-08-20 07:02:46", "lastmod": "2024-01-15 03:01:45", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Ruci\u0144ski-D", "name": { "family": "Ruci\u0144ski", "given": "D." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Gloeckler-G", "name": { "family": "Gloeckler", "given": "G." } }, { "id": "Lazarus-A-J", "name": { "family": "Lazarus", "given": "A. J." } }, { "id": "M\u00f6bius-E", "name": { "family": "M\u00f6bius", "given": "E." } }, { "id": "Witte-M", "name": { "family": "Witte", "given": "M." } } ] }, "title": "Ionization Processes in the Heliosphere \u2014 Rates and Methods of Their Determination", "ispublished": "unpub", "full_text_status": "restricted", "note": "\u00a9 Kluwer Academic Publishers 1996.\n\nThe authors are grateful to M. Allen for supplying us with new data on photoionization cross-sections compiled by him. We thank also M. Gruntman for drawing our attention to and support in collecting the most recent data on charge-exchange cross-sections. D.R. was supported by grant No.2 P03C.004.09 from the Committee for Scientific Research (Poland). This work was also supported in part through NASA contract NAS7-918, NSF Grant INT-911637, NASA Grant NAGW- 2579. The SWICS/Ulysses work contributing to the paper was supported by the NASA/ JPL contract 955460 and the Swiss National Science Foundation.", "abstract": "The rates of the most important ionization processes acting in interplanetary space on interstellar H, He, C, O, Ne and Ar atoms are critically reviewed in the paper. Their long-term modulations in the period 1974 \u2013 1994 are reexamined using updated information on relevant cross-sections as well as direct or indirect data on variations of the solar wind/solar EUV fluxes based on IMP 8 measurements and monitoring of the solar 10.7 cm radio emission. It is shown that solar cycle related variations are pronounced (factor of \u223c 3 between maximum and minimum) especially for species such as He, Ne, C for which photoionization is the dominant loss process. Species sensitive primarily to the charge-exchange (as H) show only moderate fluctuations \u223c 20% around average. It is also demonstrated that new techniques that make use of simultaneous observations of neutral He atoms on direct and indirect orbits, or simultaneous measurements of He\u207a and He\u207a\u207a pickup ions and solar wind particles can be useful tools for narrowing the uncertainties of the He photoionization rate caused by insufficient knowledge of the solar EUV flux and its variations.", "date": "1996", "date_type": "published", "publisher": "Springer Netherlands", "place_of_pub": "Dordrecht", "pagerange": "73-84", "id_number": "CaltechAUTHORS:20200511-153142800", "isbn": "9789401072960", "book_title": "The Heliosphere in the Local Interstellar Medium", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20200511-153142800", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Committee for Scientific Research (Poland)", "grant_number": "2 P03C.004.09" }, { "agency": "NASA", "grant_number": "NAS7-918" }, { "agency": "NSF", "grant_number": "INT-911637" }, { "agency": "NASA", "grant_number": "NAGW-2579" }, { "agency": "NASA/JPL", "grant_number": "955460" }, { "agency": "Swiss National Science Foundation (SNSF)" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "von-Steiger-R", "name": { "family": "von Steiger", "given": "R." } }, { "id": "Lallement-R", "name": { "family": "Lallement", "given": "R." } }, { "id": "Lee-Martin-A", "name": { "family": "Lee", "given": "M. A." } } ] }, "doi": "10.1007/978-94-009-1782-8_9", "pub_year": "1996", "author_list": "Ruci\u0144ski, D.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/4ra0a-qmg35", "eprint_id": 46484, "eprint_status": "archive", "datestamp": "2023-08-20 06:55:39", "lastmod": "2024-01-13 16:05:43", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Selesnick-R-S", "name": { "family": "Selesnick", "given": "R. S." } }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } } ] }, "title": "Anomalous Cosmic Rays: The Principal Source of High Energy Heavy Ions in the Radiation Belts", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1996 American Geophysical Union.\n\nThis work was supported by NASA under\ncontract NAS5-30704 and grant NAGW-1919. We appreciate\ncontributions to this work by our SAMPEX colleagues B. Blake, A.\nCummings, B. Klecker, R. Leske, G. Mason, J. Mazur, E. Stone, and\nT. von Rosenvinge. We thank B. Klecker, R. Pyle, and J. Simpson\nfor the use of unpublished data in Figure 2.\n\nPublished - 1996-04.pdf
", "abstract": "Recent observations from SAMPEX have shown that \"anomalous cosmic rays\" are\nthe principal source of high energy (> 10MeV/nuc) heavy ions trapped in the\nradiation belts. This component of interplanetary particles is known to originate\nfrom interstellar atoms that has been accelerated to high energies in the outer\nheliosphere. The mechanism by which anomalous cosmic rays with ~1 to ~50 Me V/nuc are trapped in a radiation belt at L \u2248 2 has now been verified. We\ndiscuss models for accelerating and trapping anomalous cosmic rays and review\nobservations of their composition, energy spectra, pitch angle distribution, and time\nvariations. Extrapolation of the fluxes observed at ~600 km to higher altitude and\nother time periods is also discussed.", "date": "1996", "date_type": "published", "publisher": "American Geophysical Union", "place_of_pub": "Washington, DC", "pagerange": "35-41", "id_number": "CaltechAUTHORS:20140624-144420724", "isbn": "9780875900797", "book_title": "Radiation Belts: Models and Standards", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140624-144420724", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-30704" }, { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "other_numbering_system": { "items": [ { "id": "1996-04", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Lemaire-J-F", "name": { "family": "Lemaire", "given": "J. F." } }, { "id": "Heynderickx-D", "name": { "family": "Heynderickx", "given": "D." } }, { "id": "Baker-D-N", "name": { "family": "Baker", "given": "Daniel N." } } ] }, "doi": "10.1029/GM097p0035", "primary_object": { "basename": "1996-04.pdf", "url": "https://authors.library.caltech.edu/records/4ra0a-qmg35/files/1996-04.pdf" }, "pub_year": "1996", "author_list": "Mewaldt, R. A.; Selesnick, R. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/tch0e-4p194", "eprint_id": 103111, "eprint_status": "archive", "datestamp": "2023-08-20 07:02:39", "lastmod": "2024-01-15 03:01:43", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "The Isotopic Composition of Anomalous Cosmic Rays from Sampex", "ispublished": "unpub", "full_text_status": "restricted", "keywords": "abundances, isotopes, anomalous cosmic rays, SAMPEX, neon, interstellar medium, heliosphere, trapped heavy ions", "note": "\u00a9 1996 Springer. \n\nWe appreciate contributions by R. S. Selesnick. This work was supported by NASA under contract NAS5-30704 and grant NAGW-1919.", "abstract": "Measurements of the anomalous cosmic ray (ACR) isotopic composition have been made in three regions of the magnetosphere accessible from the polar Earth orbit of SAMPEX, including the interplanetary medium at high latitudes and geomagnetically trapped ACRs. At those latitudes where ACRs can penetrate the Earth's magnetic field while fully stripped galactic cosmic rays (GCRs) of similar energies are excluded, a pure ACR sample is observed to have the following composition: \u00b9\u2075N/N < 0.023, \u00b9\u2078O/\u00b9\u2076O < 0.0034, and \u00b2\u00b2Ne/\u00b2\u2070Ne = 0.077(+0.085, -0.023). We compare our values with those found by previous investigators and with those measured in other samples of solar and galactic material. In particular, a comparison of \u00b2\u00b2Ne/\u00b2\u2070Ne measurements from various sources implies that GCRs are not simply an accelerated sample of the local interstellar medium.", "date": "1996", "date_type": "published", "publisher": "Springer Netherlands", "place_of_pub": "Dordrecht", "pagerange": "149-154", "id_number": "CaltechAUTHORS:20200511-151236312", "isbn": "9789401072960", "book_title": "The Heliosphere in the Local Interstellar Medium", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20200511-151236312", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-30704" }, { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "von-Steiger-R", "name": { "family": "von Steiger", "given": "R." } }, { "id": "Lallement-R", "name": { "family": "Lallement", "given": "R." } }, { "id": "Lee-Martin-A", "name": { "family": "Lee", "given": "M. A." } } ] }, "doi": "10.1007/978-94-009-1782-8_16", "pub_year": "1996", "author_list": "Leske, R. A.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/mkkb2-zd876", "eprint_id": 103110, "eprint_status": "archive", "datestamp": "2023-08-22 10:46:08", "lastmod": "2024-01-15 03:01:42", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Composition of Anomalous Cosmic Rays and Implications for the Heliosphere", "ispublished": "unpub", "full_text_status": "restricted", "keywords": "abundances; anomalous cosmic rays; Voyager; interstellar medium; heliosphere; solar wind termination shock", "note": "\u00a9 Kluwer Academic Publishers 1996. \n\nWe are grateful to J. T. Hoeksema for providing the tilt observations prior to publication. We thank J. Richardson and J. Belcher for providing the Voyager 2 solar wind speed data. This work was supported by NASA under contract NAS7-918.", "abstract": "We use energy spectra of anomalous cosmic rays (ACRs) measured with the Cosmic Ray instrument on the Voyager 1 and 2 spacecraft during the period 1994/157-313 to determine several parameters of interest to heliospheric studies. We estimate that the strength of the solar wind termination shock is 2.42 (-0.08, +0.04). We determine the composition of ACRs by estimating their differential energy spectra at the shock and find the following abundance ratios: H/He = 5.6 (-0.5, +0.6), C/He = 0.00048 \u00b1 0.00011, N/He = 0.011 \u00b1 0.001, O/He = 0.075 \u00b1 0.006, and Ne/He = 0.0050 \u00b1 0.0004. We correlate our observations with those of pickup ions to deduce that the long-term ionization rate of neutral nitrogen at 1 AU is ~8.3 \u00d7 10\u207b\u2077 s\u207b\u00b9 and that the charge-exchange cross section for neutral N and solar wind protons is ~1.0 \u00d7 10\u207b\u00b9\u2075 cm\u00b2 at 1.1 keV. We estimate that the neutral C/He ratio in the outer heliosphere is 1.8(-0.7, +0.9) \u00d7 10\u207b\u2075. We also find that heavy ions are preferentially injected into the acceleration process at the termination shock.", "date": "1996", "date_type": "published", "publisher": "Springer Netherlands", "place_of_pub": "Dordrecht", "pagerange": "117-128", "id_number": "CaltechAUTHORS:20200511-145902680", "isbn": "978-94-010-7296-0", "book_title": "The Heliosphere in the Local Interstellar Medium", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20200511-145902680", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-918" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "von-Steiger-R", "name": { "family": "von Steiger", "given": "R." } }, { "id": "Lallement-R", "name": { "family": "Lallement", "given": "R." } }, { "id": "Lee-Martin-A", "name": { "family": "Lee", "given": "M. A." } } ] }, "doi": "10.1007/978-94-009-1782-8_13", "pub_year": "1996", "author_list": "Cummings, A. C. and Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/9c6sc-5t597", "eprint_id": 46483, "eprint_status": "archive", "datestamp": "2023-08-20 06:55:35", "lastmod": "2023-10-26 19:46:52", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Selesnick-R-S", "name": { "family": "Selesnick", "given": "R. S." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "Modelling He and H Isotopes in the Radiation Belts", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1996 American Geophysical Union.\n\nThis work was supported by NASA\nunder contract NAS5-30704 and grant NAGW-1919.\n\nPublished - Selesnick_1996p123.pdf
", "abstract": "Nuclear interactions between inner zone protons and atoms in the upper\natmosphere produce energetic H and He nuclei that are an additional radiation\nbelt source. We calculate production rates of these isotopes from models of the\ninner zone proton intensity, the upper atmosphere drift averaged composition and\ndensities, and cross-sections for the various interaction processes. For comparison\nwith observations of radiation belt H and He isotopes, the production rates are\ncombined with a model of the energy loss rate in the residual atmosphere to calculate\nparticle intensities. Although the calculations are in principle straightforward, they\ndepend on a detailed knowledge of the various model inputs, including models for\nradiation belt protons, and may also depend on the phase of the solar cycle. On the\nother hand, the results of the calculations, when compared with the observational\ndata, can provide useful tests of the model inputs. Preliminary results show that\nthe atmosphere is a significant source for inner zone ^4He, ^3He, and d.", "date": "1996", "date_type": "published", "publisher": "American Geophysical Union", "place_of_pub": "Washington, DC", "pagerange": "123-128", "id_number": "CaltechAUTHORS:20140624-144048809", "isbn": "9780875900797", "book_title": "Radiation Belts: Models and Standards", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140624-144048809", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-30704" }, { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "other_numbering_system": { "items": [ { "id": "1996-03", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Lemaire-J-F", "name": { "family": "Lemaire", "given": "J. F." } }, { "id": "Heynderickx-D", "name": { "family": "Heynderickx", "given": "D." } }, { "id": "Baker-D-N", "name": { "family": "Baker", "given": "D. N." } } ] }, "doi": "10.1029/GM097p0123", "primary_object": { "basename": "Selesnick_1996p123.pdf", "url": "https://authors.library.caltech.edu/records/9c6sc-5t597/files/Selesnick_1996p123.pdf" }, "pub_year": "1996", "author_list": "Selesnick, R. S. and Mewaldt, R. A." }, { "id": "https://authors.library.caltech.edu/records/m54xd-z8303", "eprint_id": 52297, "eprint_status": "archive", "datestamp": "2023-08-20 06:56:37", "lastmod": "2023-10-18 19:44:46", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Walton-J-T", "name": { "family": "Walton", "given": "J. T." } }, { "id": "Lee-J-S", "name": { "family": "Lee", "given": "J. S." } }, { "id": "Lewak-D", "name": { "family": "Lewak", "given": "D." } }, { "id": "Wong-Y-K", "name": { "family": "Wong", "given": "Y. K." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" }, { "id": "Knowlton-W-B", "name": { "family": "Knowlton", "given": "W. B." } }, { "id": "Haller-E-E", "name": { "family": "Haller", "given": "E. E." } } ] }, "title": "Past, Present, and Future Cosmic Ray Identification Applications for Large Area Silicon Detectors", "ispublished": "unpub", "full_text_status": "public", "note": "Published in Proceedings of the Fourth International Symposium on High Purity Silicon, Proceedings Volume 96-13, The Electrochemical Society, Pennington, NJ 08534, pp. 407-\n421 (1996).\n\nSubmitted - 1997-44.pdf
", "abstract": "An overview of the application of Si(Li) detectors to cosmic-ray identification is presented. A vacancy-related defect in FZ silicon that can limit the lithium compensation process in Si(Li) detector fabrication is discussed and a gettering process to remove this defect\nis outlined. Computer simulation of the gettering process is shown to yield native point defect diffusivity and concentration values approaching those recently proposed by G\u00f6sele, Pl\u00f6\u03b2l and Tan.", "date": "1996", "date_type": "published", "publisher": "Electrochemical Society", "id_number": "CaltechAUTHORS:20141202-163530409", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141202-163530409", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1997-44", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1997-44.pdf", "url": "https://authors.library.caltech.edu/records/m54xd-z8303/files/1997-44.pdf" }, "pub_year": "1996", "author_list": "Walton, J. T.; Lee, J. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/k2ff2-z1090", "eprint_id": 44089, "eprint_status": "archive", "datestamp": "2023-08-20 06:54:54", "lastmod": "2024-01-13 06:06:21", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Selesnick-R-S", "name": { "family": "Selesnick", "given": "R. S." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Anomalous cosmic ray studies using the geomagnetic field", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1996 American Institute of Physics.\nSupported by NASA under NAS5-30704 & NAGW-1919.\n\nPublished - 1.51515.pdf
", "abstract": "We use instrumentation on SAMPEX and the Earth's field as a magnetic filter, to obtain a \"pure\" sample of anomalous cosmic rays. The energy spectrum of anomalous oxygen is found to extend to \u223c100\u2009MeV/nuc, which has implications for models of the acceleration of these nuclei.", "date": "1996", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Woodbury, NY", "pagerange": "621-621", "id_number": "CaltechAUTHORS:20140303-130326154", "isbn": "1-56396-551-8", "book_title": "Solar Wind Eight: Proceedings of the Eighth International Solar Wind Conference", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140303-130326154", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-30704" }, { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.1063/1.51515", "primary_object": { "basename": "1.51515.pdf", "url": "https://authors.library.caltech.edu/records/k2ff2-z1090/files/1.51515.pdf" }, "pub_year": "1996", "author_list": "Mewaldt, R. A.; Cummings, J. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/57h6h-k6s51", "eprint_id": 46490, "eprint_status": "archive", "datestamp": "2023-08-22 10:36:48", "lastmod": "2024-01-13 16:05:51", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Grindlay-J-E", "name": { "family": "Grindlay", "given": "J. E." }, "orcid": "0000-0002-1323-5314" }, { "id": "Prince-T-A", "name": { "family": "Prince", "given": "T. A." }, "orcid": "0000-0002-8850-3627" }, { "id": "Gehrels-N", "name": { "family": "Gehrels", "given": "N." } }, { "id": "Tueller-J", "name": { "family": "Tueller", "given": "J." } }, { "id": "Hailey-C-J", "name": { "family": "Hailey", "given": "C. J." } }, { "id": "Ramsey-B-D", "name": { "family": "Ramsey", "given": "B. D." } }, { "id": "Weisskopf-M-C", "name": { "family": "Weisskopf", "given": "M. C." } }, { "id": "Ubertini-P", "name": { "family": "Ubertini", "given": "P." } }, { "id": "Skinner-G-K", "name": { "family": "Skinner", "given": "G. K." } } ] }, "title": "Energetic X-ray Imaging Survey Telescope (EXIST)", "ispublished": "unpub", "full_text_status": "public", "keywords": "high energy astrophysics; x-ray/gamma-ray detectors; coded aperture imaging; satellite missions", "note": "\u00a9 1995 SPIE.\n\nThis Study is being supported by the NASA Mission Concepts program as well as individual instrumentation\ndevelopment grants to the investigators.\n\nPublished - 1996-07.pdf
", "abstract": "We have begun to study a mission to carry out the first high sensitivity imaging survey of the entire sky at hard\nx-ray energies (5-600 keV). The Energetic X-ray Imaging Survey Telescope (EXIST) would include 2-4 large area\ncoded aperture telescopes with offset fields of view allowing total exposures of \u2273500 ksec and flux sensitivities\nbelow 1 mCrab over the full sky in a year with time resolution from msec to months for each source as well as high\nspatial and spectral resolution for sources, transients and gamma-ray bursts. A pointed Observatory phase, with\nthe telescopes co-aligned, would follow and achieve still greater sensitivities and temporal coverage, allowing the\ndetailed study of virtually all classes of accretion sources (cataclysmic variables to quasars) as well as diffuse galactic\nemission. The baseline concept originally proposed for the detector is a modularized array (4 x 4) of Cd-Zn-Te\ncrystals (6.25 cm^2 each, or 100 cm^2 /module). An array of 5 x 5 modules, or 2500 cm^2 total detector area with 1.25\nmm spatial resolution, would constitute the focal plane readout of each of the 4 telescopes. A brief description of\nthe proposed detector and telescopes and predicted backgrounds and sensitivity is given. An alternative detector concept, employing a hybrid (stacked) gas counter (2 atm Xe/TMA, optical avalanche chamber) and imaging\nphoswich scintillator (NaI/CsI), is also described and tradeoffs presented.", "date": "1995-09-01", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers", "place_of_pub": "Bellingham, WA", "pagerange": "202-210", "id_number": "CaltechAUTHORS:20140624-150116093", "isbn": "0-8194-1877-3", "book_title": "EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VI", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140624-150116093", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" } ] }, "other_numbering_system": { "items": [ { "id": "1996-07", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.1117/12.218377", "primary_object": { "basename": "1996-07.pdf", "url": "https://authors.library.caltech.edu/records/57h6h-k6s51/files/1996-07.pdf" }, "pub_year": "1995", "author_list": "Grindlay, J. E.; Prince, T. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/g6sgb-yev23", "eprint_id": 49985, "eprint_status": "archive", "datestamp": "2023-08-20 06:15:56", "lastmod": "2023-10-17 22:25:25", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-Richard-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Cummings-Alan-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Cummings-Jay-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-Tycho-T", "name": { "family": "von Rosenvinge", "given": "T. T." }, "orcid": "0000-0001-7320-4141" } ] }, "title": "The Isotopic Composition of Anomalous and Galactic Cosmic Rays from SAMPEX", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 IUPAP. Provided by the NASA Astrophysics Data System. \n\nThis work was supported by NASA under contract NAS5-30704 and grant NAGW-1919.", "abstract": "New measurements of the anomalous cosmic ray (ACR) isotopic composition\nare presented, using data from the Mass Spectrometer Telescope (MAST) on\nSAMPEX. At high invariant latitudes or in interplanetary space, ACR isotopic\ncomposition measurements require correction for contamination from galactic\ncosmic rays (GCRs); however, at lower latitudes singly-charged ACRs can penetrate\nthe Earth's magnetic field while fully stripped GCRs of similar energies\nare excluded, allowing us to study a pure ACR sample. Preliminary values\nfor ACRs obtained using this geomagnetic filter approach are: ^(15)N /N < 0.032, ^(18)0/^(16)0 < 0.0057, and ^(22)Ne = ^(20)Ne = 0.087(+0.137, -0.026). We compare our\nvalues with those found by previous investigators and with those measured in\nother samples of solar and galactic material.", "date": "1995-09", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20140924-100753535", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140924-100753535", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-30704" }, { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "other_numbering_system": { "items": [ { "id": "1995-15", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Iucci-N", "name": { "family": "Iucci", "given": "N." } }, { "id": "Lamanna-E", "name": { "family": "Lamanna", "given": "E." } } ] }, "pub_year": "1995", "author_list": "Leske, R. A.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/wns4n-q8s48", "eprint_id": 46318, "eprint_status": "archive", "datestamp": "2023-09-15 04:45:03", "lastmod": "2023-10-23 21:09:22", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Reimer-O", "name": { "family": "Reimer", "given": "O." } }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Christian-Eric-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Davis-Andrew-J", "name": { "family": "Davis", "given": "A. J." }, "orcid": "0000-0002-9922-8915" }, { "id": "Golden-R-L", "name": { "family": "Golden", "given": "R. L." } }, { "id": "Hof-Martin", "name": { "family": "Hof", "given": "M." }, "orcid": "0000-0003-2884-3037" }, { "id": "Krombel-K-E", "name": { "family": "Krombel", "given": "K. E." } }, { "id": "Labrador-Allan-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Menn-W", "name": { "family": "Menn", "given": "W." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Ormes-J-F", "name": { "family": "Ormes", "given": "J. F." } }, { "id": "Rasmussen-I-L", "name": { "family": "Rasmussen", "given": "I. L." } }, { "id": "Schindler-Stephen-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Simon-M-I-Astro", "name": { "family": "Simon", "given": "M. I." } }, { "id": "Stochaj-S-J", "name": { "family": "Stochaj", "given": "S. J." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } }, { "id": "Webber-William-R", "name": { "family": "Webber", "given": "W. R." }, "orcid": "0000-0001-9238-9145" } ] }, "title": "The Cosmic Ray \u00b3He/\u2074He Ratio from 0.2 to 3.6 GeV/nucleon", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 IUPAP \u2022 Provided by the NASA Astrophysics Data System\n\nPublished - 1995ICRC...24b.618R.pdf
", "abstract": "The abundances of cosmic ray helium isotopes between 0.2 and 3.6 GeV/n were measured by the IMAX balloon-borne magnet spectrometer during a flight in Canada in July, 1992. A high-resolution time-of-flight system and two silica-aerogel Cherenkov counters were used in conjunction with a drift chamber/MWPC-tracking system to determine mass by means of the velocity vs. magnetic rigidity technique.", "date": "1995-09", "date_type": "published", "publisher": "Caltech Library", "id_number": "CaltechAUTHORS:20140617-164044646", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140617-164044646", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1995-26", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Iucci-M", "name": { "family": "Iucci", "given": "M." } }, { "id": "Lamanna-E", "name": { "family": "Lamanna", "given": "E." } } ] }, "primary_object": { "basename": "1995ICRC...24b.618R.pdf", "url": "https://authors.library.caltech.edu/records/wns4n-q8s48/files/1995ICRC...24b.618R.pdf" }, "pub_year": "1995", "author_list": "Reimer, O.; Barbier, L. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/3pgpy-cb025", "eprint_id": 46359, "eprint_status": "archive", "datestamp": "2023-08-20 05:05:39", "lastmod": "2023-10-26 19:41:34", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Reimer-O", "name": { "family": "Reimer", "given": "O." } }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Golden-R-L", "name": { "family": "Golden", "given": "R. L." } }, { "id": "Hof-M", "name": { "family": "Hof", "given": "M." }, "orcid": "0000-0003-2884-3037" }, { "id": "Krombel-K-E", "name": { "family": "Krombel", "given": "K. E." } }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Menn-W", "name": { "family": "Menn", "given": "W." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Ormes-J-F", "name": { "family": "Ormes", "given": "J. F." } }, { "id": "Rasmussen-I-L", "name": { "family": "Rasmussen", "given": "I. L." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Simon-M", "name": { "family": "Simon", "given": "M." } }, { "id": "Stochaj-S-J", "name": { "family": "Stochaj", "given": "S. J." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "Cosmic Ray Hydrogen Isotopes from 0.2 to 3.0 GeV/nucleon", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 IUPAP. Provided by the NASA Astrophysics Data System.\n\nPublished - 1995-29.pdf
", "abstract": "We have measured the energy dependent abundances of the hydrogen \nisotopes by the IMAX balloon-borne magnet spectrometer during a flight in July,\n1992. A high- resolution time-of-flight system was used in conjunction with a\ndrift chamber/MWPC-tracking system to determine the mass by means of a\nvelocity vs. magnetic rigidity technique. A model of the instrument response\nwas developed in order to unfold the species and rigidity-dependent effects.\nMeasurements of the ^2H/^1 H-ratio from 0.2 to 3.0 Ge V / n will be presented.", "date": "1995", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20140619-114146710", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140619-114146710", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1995-29", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Iucci-N", "name": { "family": "Iucci", "given": "N." } }, { "id": "Lamanna-E", "name": { "family": "Lamanna", "given": "E." } } ] }, "primary_object": { "basename": "1995-29.pdf", "url": "https://authors.library.caltech.edu/records/3pgpy-cb025/files/1995-29.pdf" }, "pub_year": "1995", "author_list": "Reimer, O.; Davis, A. J.; et el." }, { "id": "https://authors.library.caltech.edu/records/v05mc-je054", "eprint_id": 46250, "eprint_status": "archive", "datestamp": "2023-08-20 05:04:36", "lastmod": "2023-10-26 19:37:27", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Elemental Composition of the Anomalous Cosmic Ray Component", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 IUPAP. Provided by the NASA Astrophysics Data System.\n\nWe thank E. Christian for providing the ACR hydrogen\nspectrum and M. Allen for a compilation of photoionization cross-sections. We thank\nM. Gruntman for finding the charge-exchange cross-section for C and bringing it to our\nattention. We also thank J. Richardson and J. Belcher for providing the V2 plasma data\nin advance of publication. This work was supported in part by NASA under contract\nNAS-7-918 and grant NGR-05-002-160.\n\nPublished - 1995-13.pdf
", "abstract": "We present a new determination of the abundances (normalized to He I and Ne I) of neutral atoms HI, CI, NI, 0I, and ArI in the very local interstellar medium. These abundances are derived from 1994 Voyager 1 observations of the energy spectra of the anomalous cosmic ray (ACR) component. We find that the abundances of NI, 0I, and ArI are in good agreement with solar system abundances, while the abundance of HI is -1/10 and that of CI is -1/80 of the solar system values, respectively. The low HI abundance suggests that H may be partially assimilated into the solar wind or is disfavored in the acceration process. The low CI abundance is\nconsistent with the expectation that C is mostly ionized in the local interstellar\nmedium. We find no evidence for significant charge-changing\ninteractions associated with the heliosheath region or with significant\ndepletion of atoms into grains in the very local interstellar medium.", "date": "1995", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20140612-134940854", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140612-134940854", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS-7-918" }, { "agency": "NASA", "grant_number": "NGR-05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1995-13", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Iucci-N", "name": { "family": "Iucci", "given": "N." } }, { "id": "Lamanna-N", "name": { "family": "Lamanna", "given": "E." } } ] }, "primary_object": { "basename": "1995-13.pdf", "url": "https://authors.library.caltech.edu/records/v05mc-je054/files/1995-13.pdf" }, "pub_year": "1995", "author_list": "Cummings, A. C. and Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/3t9kq-14d29", "eprint_id": 46346, "eprint_status": "archive", "datestamp": "2023-08-20 05:05:35", "lastmod": "2023-10-26 19:41:07", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "Menn-W", "name": { "family": "Menn", "given": "W." } }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Golden-R-L", "name": { "family": "Golden", "given": "R. L." } }, { "id": "Hof-M", "name": { "family": "Hof", "given": "M." }, "orcid": "0000-0003-2884-3037" }, { "id": "Krombel-K-E", "name": { "family": "Krombel", "given": "K. E." } }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Ormes-J-F", "name": { "family": "Ormes", "given": "J. F." } }, { "id": "Rasmussen-I-L", "name": { "family": "Rasmussen", "given": "I. L." } }, { "id": "Reimer-O", "name": { "family": "Reimer", "given": "O." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Simon-M-I", "name": { "family": "Simon", "given": "M." } }, { "id": "Stochaj-S-J", "name": { "family": "Stochaj", "given": "S. J." } }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "Interpretation of the Helium Isotope Ratios Measured by IMAX", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 IUPAP. Provided by the NASA Astrophysics Data System.\n\nThis work supported by NASA under grant NAGW-1919 and other grants\n\nPublished - 1995-28.pdf
", "abstract": "We present here the IMAX^3He/He^4 ratios between 0.2 and 3.6 GeV /nucleon\ncorrected to the top of the atmosphere, and a preliminary comparison with previous\ndata. and the predictions of a standard 'Leaky Box' model of CR transport\nin the galaxy. We find no evidence of an excess of ^3He over that predicted by\nthe model, in the energy range studied.", "date": "1995", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20140618-144936615", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140618-144936615", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "other_numbering_system": { "items": [ { "id": "1995-28", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Iucci-N", "name": { "family": "Iucci", "given": "N." } }, { "id": "Lamanna-E", "name": { "family": "Lamanna", "given": "E." } } ] }, "primary_object": { "basename": "1995-28.pdf", "url": "https://authors.library.caltech.edu/records/3t9kq-14d29/files/1995-28.pdf" }, "pub_year": "1995", "author_list": "Davis, A. J.; Menn, W.; et el." }, { "id": "https://authors.library.caltech.edu/records/e67q2-3sf69", "eprint_id": 46287, "eprint_status": "archive", "datestamp": "2023-08-20 05:04:49", "lastmod": "2023-10-26 19:38:46", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "The Reappearance of Anomalous Cosmic Ray Hydrogen", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 IUPAP. Provided by the NASA Astrophysics Data System.\n\nWe gratefully acknowledge the support of E.R. Christian by the NASA ACE Explorer\nProject, and the other authors by NASA contract NAS7-918 and grant NAGW-1919.\n\nPublished - 1995-16.pdf
", "abstract": "New observations from the Cosmic Ray Subsystem (CRS) on the Voyager\nspacecraft clearly show that anomalous cosmic ray hydrogen has reappeared,\nclearing up a controversy that has existed since the previous solar\nminimum [l, 2]. The new observations are consistent with the evidence for\nanomalous cosmic ray hydrogen seen in the 1987 solar minimum. Comparison\nof the anomalous and galactic cosmic ray modulation for the two\nsolar minima indicates that there is substantial modulation of the galactic\ncosmic rays beyond the solar wind termination shock.", "date": "1995", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20140616-162118203", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140616-162118203", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA ACE Explorer Project" }, { "agency": "NASA", "grant_number": "NAS7-918" }, { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "other_numbering_system": { "items": [ { "id": "1995-16", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Iucci-N", "name": { "family": "Iucci", "given": "N." } }, { "id": "Lamanna-E", "name": { "family": "Lamanna", "given": "E." } } ] }, "primary_object": { "basename": "1995-16.pdf", "url": "https://authors.library.caltech.edu/records/e67q2-3sf69/files/1995-16.pdf" }, "pub_year": "1995", "author_list": "Christian, E. R.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/pwabj-rjd21", "eprint_id": 46290, "eprint_status": "archive", "datestamp": "2023-08-20 05:05:03", "lastmod": "2023-10-26 19:38:53", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "Radial and Latitudinal Gradients of Anomalous Cosmic Rays in the Outer Heliosphere", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 IUPAP. Provided by the NASA Astrophysics Data System.\n\nThis work was supported in part by NASA under contract\nNAS7-918 and grant NAGW-1919. We thank J. T. Hoeksema for providing the tilt\nobservations prior to publication.\n\nPublished - 1995-19.pdf
", "abstract": "We use recent data from the Voyager 1 and 2 and Pioneer 10 spacecraft to\ndetermine the radial and latitudinal gradients of anomalous cosmic rays\n(ACRs) in the outer heliosphere. The latitudinal gradient is small and\npositive, as opposed to the large and negative values observed during the\nlast solar minimum in 1987. The radial gradient is small and steady. We\ncompare our results with current theories of the acceleration and propagation\nof ACRs. We also suggest that the large increase in the intensity of\nACR helium that we observe during 1992 is due primarily to a change in \u00b7\nthe ACR source flux as interplanetary conditions approach quasi-equilibrium.\nThe continuing increases at lower energies in 1993 and 1994\nare consistent with a decreasing level of modulation during a period of\nquasi-equilibrium.", "date": "1995", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20140616-163700853", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140616-163700853", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-918" }, { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "other_numbering_system": { "items": [ { "id": "1995-19", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Iucci-N", "name": { "family": "Iucci", "given": "N." } }, { "id": "Lamanna-E", "name": { "family": "Lamanna", "given": "E." } } ] }, "primary_object": { "basename": "1995-19.pdf", "url": "https://authors.library.caltech.edu/records/pwabj-rjd21/files/1995-19.pdf" }, "pub_year": "1995", "author_list": "Stone, E. C.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/k54a7-26425", "eprint_id": 46286, "eprint_status": "archive", "datestamp": "2023-08-20 05:04:45", "lastmod": "2023-10-26 19:38:44", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-Richard-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Cummings-Alan-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Cummings-Jay-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-Tycho-T", "name": { "family": "von Rosenvinge", "given": "T. T." }, "orcid": "0000-0001-7320-4141" } ] }, "title": "The Isotopic Composition of Anomalous and Galactic Cosmic Rays from SAMPEX", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 IUPAP. Provided by the NASA Astrophysics Data System. \n\nThis work was supported by NASA under contract NAS5-30704 and grant NAGW-1919.\n\nPublished - 1995-15.pdf
", "abstract": "New measurements of the anomalous cosmic ray (ACR) isotopic composition\nare presented, using data from the Mass Spectrometer Telescope (MAST) on\nSAMPEX. At high invariant latitudes or in interplanetary space, ACR isotopic\ncomposition measurements require correction for contamination from galactic\ncosmic rays (GCRs); however, at lower latitudes singly-charged ACRs can penetrate\nthe Earth's magnetic field while fully stripped GCRs of similar energies\nare excluded, allowing us to study a pure ACR sample. Preliminary values\nfor ACRs obtained using this geomagnetic filter approach are: ^(15)N /N < 0.032, ^(18)0/^(16)0 < 0.0057, and ^(22)Ne = ^(20)Ne = 0.087(+0.137, -0.026). We compare our\nvalues with those found by previous investigators and with those measured in\nother samples of solar and galactic material.", "date": "1995", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20140616-161605497", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140616-161605497", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-30704" }, { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "other_numbering_system": { "items": [ { "id": "1995-15", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Iucci-N", "name": { "family": "Iucci", "given": "N." } }, { "id": "Lamanna-E", "name": { "family": "Lamanna", "given": "E." } } ] }, "primary_object": { "basename": "1995-15.pdf", "url": "https://authors.library.caltech.edu/records/k54a7-26425/files/1995-15.pdf" }, "pub_year": "1995", "author_list": "Leske, R. A.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/ttg4q-6am81", "eprint_id": 46289, "eprint_status": "archive", "datestamp": "2023-08-20 05:04:58", "lastmod": "2023-10-26 19:38:51", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Blake-J-B", "name": { "family": "Blake", "given": "J. B." } }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "Franz-M", "name": { "family": "Franz", "given": "M." } }, { "id": "Hovestadt-D", "name": { "family": "Hovestadt", "given": "D." } }, { "id": "Klecker-B", "name": { "family": "Klecker", "given": "B." } }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Mazur-J-E", "name": { "family": "Mazur", "given": "J. E." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "Radial and Latitudinal Gradients of Anomalous Cosmic Ray Oxygen Throughout the Heliosphere", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 IUPAP. Provided by the NASA Astrophysics Data System.\n\nThis work was supported in part by NASA under contracts\nNAS7-918, NAS5-30704, JPL contract 958748, and Agreement 26979B. This work was\nalso supported by the MPG and BMFT under grant numbers 010N1990, 500N87037,\n500C90021, and 500N91050.\n\nPublished - 1995-18.pdf
", "abstract": "We have used data from the SAMPEX. Ulysses, Voyager 1 (Vl), Voyager\n2 (V2), and Pioneer 10 (PIO) spacecraft to determine the radial and latitudinal\ngradients of anomalous cosmic ray oxygen at 10 MeV/nuc during\n1994 days 209 - 313. These five spacecraft cover radial distances from 1\nAU (SAMPEX) to 61 AU (PIO) and latitudes to 80\u00b0 S (Ulysses) and 33\u00b0 N\n(Vl). We find that the radial gradient is a decreasing function of radial\ndistance, -r^(-n)\n, with n = 0.7 \u00b1 0.7. The large-scale radial gradient between\nthe inner and outer heliosphere is much smaller than it was during the last\nsolar minimum period in ~1987. The latitudinal gradient is small and\npositive, 2.1 \u00b1 0.6 %/deg, as opposed to the large and negative latitudinal\ngradients found during 1987, but similar to the small positive latitudinal\ngradient reported in a similar study for 1993 and also similar to that measured\nduring 1976 for anomalous cosmic ray helium. These observations\nconfirm that effects of curvature and gradient drift in the large scale magnetic\nfield of the Sun are important for establishing the three-dimensional\nintensity distributions of these particles in the heliosphere during periods of\nsolar minimum conditions.", "date": "1995", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20140616-163231974", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140616-163231974", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-918" }, { "agency": "NASA", "grant_number": "NAS5-30704" }, { "agency": "JPL", "grant_number": "958748" }, { "agency": "JPL", "grant_number": "26979B" }, { "agency": "Bundesministerium f\u00fcr Forschung und Technologie (BMFT)", "grant_number": "010N1990" }, { "agency": "Bundesministerium f\u00fcr Forschung und Technologie (BMFT)", "grant_number": "500N87037" }, { "agency": "Bundesministerium f\u00fcr Forschung und Technologie (BMFT)", "grant_number": "500C90021" }, { "agency": "Bundesministerium f\u00fcr Forschung und Technologie (BMFT)", "grant_number": "500N91050" }, { "agency": "Max Planck Gesellschaft" } ] }, "other_numbering_system": { "items": [ { "id": "1995-18", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Iucci-N", "name": { "family": "Iucci", "given": "N." } }, { "id": "Lamanna-E", "name": { "family": "Lamanna", "given": "E." } } ] }, "primary_object": { "basename": "1995-18.pdf", "url": "https://authors.library.caltech.edu/records/ttg4q-6am81/files/1995-18.pdf" }, "pub_year": "1995", "author_list": "Cummings, A. C.; Blake, J. B.; et el." }, { "id": "https://authors.library.caltech.edu/records/d6pfa-ses07", "eprint_id": 46274, "eprint_status": "archive", "datestamp": "2023-08-20 05:04:41", "lastmod": "2023-10-26 19:38:25", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Selesnick-R-S", "name": { "family": "Selesnick", "given": "R. S." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Studies of Anomalous Cosmic Rays using the Geomagnetic Field", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 IUPAP. Provided by the NASA Astrophysics Data System.\n\nSupported by NASA under NAS5-30704 & NAGW-\n1919.\n\nPublished - 1995-14.pdf
", "abstract": "We use instrumentation on SAMPEX and the Earth's field as a\nmagnetic rigidity filter in a new \"double spectrometer\" approach to\nmeasure the composition and energy spectra of anomalous cosmic\nrays. We obtain a \"pure\" sample of anomalous cosmic ray C, N, 0,\nand Ne, with no significant evidence for other species. The energy\nspectrum of anomalous oxygen extends to -100 MeV/nuc, which\nhas implications for models of the acceleration of these nuclei.", "date": "1995", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20140616-091105149", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140616-091105149", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-30704" }, { "agency": "NASA", "grant_number": "NAGW- 1919" } ] }, "other_numbering_system": { "items": [ { "id": "1995-14", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Iucci-N", "name": { "family": "Iucci", "given": "N." } }, { "id": "Lamanna-E", "name": { "family": "Lamanna", "given": "E." } } ] }, "primary_object": { "basename": "1995-14.pdf", "url": "https://authors.library.caltech.edu/records/d6pfa-ses07/files/1995-14.pdf" }, "pub_year": "1995", "author_list": "Mewaldt, R. A.; Cummings, J. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/q669h-6pa75", "eprint_id": 46373, "eprint_status": "archive", "datestamp": "2023-08-20 05:05:56", "lastmod": "2023-10-26 19:42:04", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Milliken-B", "name": { "family": "Milliken", "given": "B." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "The Space Physics Data System - Cosmic and Heliospheric Nodes", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 IUPAP. Provided by the NASA Astrophysics Data System.\n\nThis paper and the SPDS effort in general have been supported by the ACE\nproject as well as by NASA SPDS funding. We also want to take the opportunity\nto note the effort of Ray Walker to share PDS lessons learned with us.\nPatricia Reiff and Rice University were very gracious hosts for the Community\nWorkshop and we appreciate it.\n\nPublished - 1995-34.pdf
", "abstract": "The Space Physics Data System (SPDS) is a community- driven network\nof information sources, linked and interfaced by World Wide Web\nsoftware. The SPDS coordinators are community representatives to the\nNASA Space Physics Division, who are soliciting additional Web nodes,\ntrying to keep the nodes organized, and soliciting information/suggestions\nabout older data in danger of loss. Here we present a guide to data in\nCosmic and Heliospheric nodes of the SPDS. New contributions to this\nsystem are being solicited and some funds may be available to assist\nwith their development.", "date": "1995", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20140619-153335905", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140619-153335905", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" } ] }, "other_numbering_system": { "items": [ { "id": "1995-34", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Iucci-N", "name": { "family": "Iucci", "given": "N." } }, { "id": "Lamanna-E", "name": { "family": "Lamanna", "given": "E." } } ] }, "primary_object": { "basename": "1995-34.pdf", "url": "https://authors.library.caltech.edu/records/q669h-6pa75/files/1995-34.pdf" }, "pub_year": "1995", "author_list": "Milliken, B.; Leske, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/1vjwe-bpk75", "eprint_id": 46830, "eprint_status": "archive", "datestamp": "2023-08-20 05:06:14", "lastmod": "2023-10-26 19:55:38", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Finger-M-H", "name": { "family": "Finger", "given": "Mark H." } }, { "id": "Prince-T-A", "name": { "family": "Prince", "given": "Thomas A." }, "orcid": "0000-0002-8850-3627" } ] }, "title": "Useful Classes of Redundant Arrays for Imaging Applications", "ispublished": "unpub", "full_text_status": "restricted", "note": "\u00a9 1995 Kluwer Academic Publishers.\n\nJuly 28, 1995.", "abstract": "We discuss several classes of redundant arrays. These arrays have applications\nfor indirect imaging in a variety of fields including coded-aperture imaging, interferometric\nradio imaging, and optical imaging in the presence of\u00b7 atmospheric turbulence. The\nspecific classes we will discuss are all based on Galois fields and include: antisymmetric\nredundant arrays (ARAs) which have as a subset the hexagonal uniformly redundant\narrays (HURAs), non-redundant arrays (NRAs), and the general class of quadratic residue\narrays (QRAs).", "date": "1995", "date_type": "published", "publisher": "Kluwer", "place_of_pub": "Dordrecht, Netherlands", "pagerange": "221-226", "id_number": "CaltechAUTHORS:20140703-214026579", "isbn": "0-7923-3788-3", "book_title": "Imaging in High Energy Astronomy", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140703-214026579", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1996-14", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Bassani-L", "name": { "family": "Bassani", "given": "L." } }, { "id": "di-Cocco-G", "name": { "family": "di Cocco", "given": "G." } } ] }, "doi": "10.1007/978-94-011-0407-4_32", "pub_year": "1995", "author_list": "Finger, Mark H. and Prince, Thomas A." }, { "id": "https://authors.library.caltech.edu/records/q65n3-p4203", "eprint_id": 46292, "eprint_status": "archive", "datestamp": "2023-08-20 05:05:11", "lastmod": "2023-10-26 19:38:57", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "Solar and Interplanetary Particles Re-Accelerated at the Solar Wind Termination Shock", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 IUPAP. Provided by the NASA Astrophysics Data System.\n\nI appreciate conversations with J. R. Jokipii, who first\nsuggested to me that SEPs might be further accelerated at the termination\nshock. I also thank A. C. Cummings and E. C. Stone. This work was supported\nby NASA under NASS-30704 & NAGW-1919.\n\nPublished - 1995-21.pdf
", "abstract": "We consider the acceleration of solar/interplanetary particles at the\nsolar wind termination shock, predict the expected composition and\nenergy spectra, and discuss possible observable consequences", "date": "1995", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20140616-164157614", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140616-164157614", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NASS-30704" }, { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "other_numbering_system": { "items": [ { "id": "1998-06", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Iucci-N", "name": { "family": "Iucci", "given": "N." } }, { "id": "Lamanna-E", "name": { "family": "Lamanna", "given": "E." } } ] }, "primary_object": { "basename": "1995-21.pdf", "url": "https://authors.library.caltech.edu/records/q65n3-p4203/files/1995-21.pdf" }, "pub_year": "1995", "author_list": "Mewaldt, R. A." }, { "id": "https://authors.library.caltech.edu/records/b5yj0-zhm92", "eprint_id": 46293, "eprint_status": "archive", "datestamp": "2023-08-20 05:05:16", "lastmod": "2023-10-26 19:38:59", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Selesnick-R-S", "name": { "family": "Selesnick", "given": "R. S." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Masur-J-E", "name": { "family": "Masur", "given": "J. E." } }, { "id": "Blake-J-B", "name": { "family": "Blake", "given": "J. B." } }, { "id": "Looper-M-D", "name": { "family": "Looper", "given": "M. D." } }, { "id": "Klecker-B", "name": { "family": "Klecker", "given": "B." } }, { "id": "Hovestadt-D", "name": { "family": "Hovestadt", "given": "D." } } ] }, "title": "Observations of Geomagnetically Trapped Anomalous Cosmic Rays", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 IUPAP. Provided by the NASA Astrophysics Data System.\n\nThis work was supported by NASA under contract\nNAS5-30704 and grant NAGW-1919, by NASA Cooperative Agreement\n26979B at The Aerospace Corporation, and by the Bundesministerium fur\nForschung und Technologie, Germany under grant 50 OC90021.\n\nPublished - 1995-22.pdf
", "abstract": "Energy spectra from three instruments on SAMPEX of geomagnetically\ntrapped anomalous cosmic ray 0 and Ne with ~1 to 50 Me V /nucleon\nare peaked near the local western geomagnetic cutoff energy, sharply\ndecreasing above and gradually decreasing below this energy. They are\nin reasonable agreement with model spectra based on the trapping theory.", "date": "1995", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20140616-164555462", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140616-164555462", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-30704" }, { "agency": "NASA", "grant_number": "NAGW-1919" }, { "agency": "NASA", "grant_number": "26979B" }, { "agency": "Bundesministerium f\u00fcr Forschung und Technologie (BMFT)", "grant_number": "50 OC90021" }, { "agency": "Aerospace Corporation" } ] }, "other_numbering_system": { "items": [ { "id": "1995-22", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Iucci-N", "name": { "family": "Iucci", "given": "N." } }, { "id": "Lamanna-E", "name": { "family": "Lamanna", "given": "E." } } ] }, "primary_object": { "basename": "1995-22.pdf", "url": "https://authors.library.caltech.edu/records/b5yj0-zhm92/files/1995-22.pdf" }, "pub_year": "1995", "author_list": "Selesnick, R. S.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/1phce-24118", "eprint_id": 54094, "eprint_status": "archive", "datestamp": "2023-08-20 05:07:08", "lastmod": "2023-10-19 23:38:33", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Measurements of the Ionic Charge States of Solar Energetic Particles at 15-70 MeV/nucleon", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1995 IUPAP.\n\nProvided by the NASA Astrophysics Data System.\n\nThis work was supported by NASA under contract NAS5-30704 and grant NAGW-1919.\n\nPublished - Stone_1995p461.pdf
", "abstract": "The mean charge states of abundant heavy ions with ~15 - 70 MeV/n\nin the two large solar energetic particle (SEP) events of 1992 October 30 and\nNovember 2 have been determined using measurements of invariant latitude of\nthe geomagnetic cutoffs as a function of time, particle energy, and element from\nthe Mass Spectrometer Telescope (MAST) on SAMPEX. The deduced charge\nstate values are in good agreement with the mean values measured directly\nin previous SEP events at much lower energies of ~1 MeV/n, with inferred\nequilibrium source temperatures of typically 2 x 10^6 K, which provides additional\nevidence that SEPs in gradual-type events are accelerated coronal material.", "date": "1995", "date_type": "published", "publisher": "International Union of Pure and Applied Physicists", "id_number": "CaltechAUTHORS:20150126-153006623", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150126-153006623", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-30704" }, { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "other_numbering_system": { "items": [ { "id": "1995-23", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Iucci-N", "name": { "family": "Iucci", "given": "N." } }, { "id": "Lamanna-E", "name": { "family": "Lamanna", "given": "E." } } ] }, "primary_object": { "basename": "Stone_1995p461.pdf", "url": "https://authors.library.caltech.edu/records/1phce-24118/files/Stone_1995p461.pdf" }, "pub_year": "1995", "author_list": "Leske, R. A.; Cummings, J. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/tm99p-xmb98", "eprint_id": 46823, "eprint_status": "archive", "datestamp": "2023-08-20 05:06:07", "lastmod": "2024-01-13 16:06:00", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Harrison-F-A", "name": { "family": "Harrison", "given": "Fiona A." }, "orcid": "0000-0003-2992-8024" }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. R." } }, { "id": "Prince-T-A", "name": { "family": "Prince", "given": "Thomas A." }, "orcid": "0000-0002-8850-3627" }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Hailey-C-J", "name": { "family": "Hailey", "given": "C. J." } }, { "id": "Thorsett-S-E", "name": { "family": "Thorsett", "given": "S. E." } } ] }, "title": "Andromeda: A mission to determine the gamma-ray burst distance scale", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1995 SPIE--The International Society for Optical Engineering.\n\nWe thank all of the members of the Andromeda Working Group (B. Pacynski, D. Chakrabarty, W.\nCraig, T. T. Hamilton, D. W. Hogg, S. R. Kulkarni, W. H. G. Lewin, P. Podsiadlowski, P. S. Ray,\nG. Sprehn, H. Tannenbaum) for their contributions to this. work. FAH acknowledges support from a\nRobert A. Millikan Fellowship.\n\nPublished - 1996-08.pdf
", "abstract": "Andromeda is a wide-field, imaging, hard x-ray/soft gamma-ray instrument capable of detecting gamma-ray bursts (GRBs) a factor approximately 20 times fainter than GRO/BATSE. During one-year of a two-year mission, it could determine whether GRBs are Galactic or cosmological in origin by searching for an excess of bursts towards the nearby Andromeda galaxy (M31). As a pointed, imaging instrument with sensitivity in the 10 - 200 keV band significantly better than previous coded-aperture instruments, Andromeda is capable of carrying out important secondary science objectives: for example, studying the soft-gamma- repeater and x-ray transient populations of M31 and the Galactic bulge. Andromeda is a coded aperture gamma-ray telescope consisting of a hexagonal coded mask coupled to an alkali- halide imaging scintillation detector, a flight-proven technology adapted from the balloon- borne Caltech gamma-ray imaging payload (GRIP). The new instrument is optimized for the 10 - 200 keV band and has 1.5 degree angular resolution over a 17 degree FWHM field of view. Andromeda is designed to be a small, low-cost mission, and draws its design largely from existing instrumentation. Andromeda was submitted to the STEDI program, and will also be proposed as a NASA Small Explorer.", "date": "1995", "date_type": "published", "publisher": "International Society for Optical Engineering", "id_number": "CaltechAUTHORS:20140703-212040890", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140703-212040890", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Robert A. Millikan Fellowship" } ] }, "other_numbering_system": { "items": [ { "id": "1996-08", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Siegmund-O-H-W", "name": { "family": "Siegmund", "given": "Oswald H. W." } }, { "id": "Vallerga-J-V", "name": { "family": "Vallerga", "given": "John V" } } ] }, "doi": "10.1117/12.218402", "primary_object": { "basename": "1996-08.pdf", "url": "https://authors.library.caltech.edu/records/tm99p-xmb98/files/1996-08.pdf" }, "pub_year": "1995", "author_list": "Harrison, Fiona A.; Cook, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/v1fbt-qvn73", "eprint_id": 46291, "eprint_status": "archive", "datestamp": "2023-08-20 05:05:07", "lastmod": "2023-10-26 19:38:55", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "Evolution of the Energy Spectra of Anomalous Cosmic Rays in the Outer Heliosphere and the Distance to the Solar Wind Termination Shock", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 IUPAP. Provided by the NASA Astrophysics Data System.\n\nThis work\nwas supported in part by NASA under\ncontract NAS7-9I8 and grant NAGWI9I9.\n\nPublished - 1995-20.pdf
", "abstract": "Using data from the Voyager 1 and 2 (Vl and V2) spacecraft, we examine\nthe energy spectra of anomalous cosmic rays (ACRs) for three time periods\nin 1993 - 1994. We use a spherically-symmetric model of the propagation\nof ACRs in the heliosphere to derive the energy spectrum of ACRs at the\nsolar wind termination shock and the shock's location. We find that in late\n1994 the shock strength has a value of 2.40 \u00b1 0.12 and is located at 84.2\n(-2.2, +2.6) AU.", "date": "1995", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20140616-163928405", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140616-163928405", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-9I8" }, { "agency": "NASA", "grant_number": "NAGWI9I9" } ] }, "other_numbering_system": { "items": [ { "id": "1995-20", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Iucci-N", "name": { "family": "Iucci", "given": "N." } }, { "id": "Lamanna-E", "name": { "family": "Lamanna", "given": "E." } } ] }, "primary_object": { "basename": "1995-20.pdf", "url": "https://authors.library.caltech.edu/records/v1fbt-qvn73/files/1995-20.pdf" }, "pub_year": "1995", "author_list": "Stone, E. C.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/wyggr-bb004", "eprint_id": 46288, "eprint_status": "archive", "datestamp": "2023-08-20 05:04:54", "lastmod": "2023-10-26 19:38:48", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "Evidence for Anomalous Cosmic Ray Hydrogen during the 1976-1977 Solar Minimum", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 IUPAP. Provided by the NASA Astrophysics Data System.\n\nThis work was supported by NASA under under NASS-30704 &\nNAGW-1919. I appreciate discussions with H. Moraal, A. Cummings, and E. Stone.\n\nPublished - 1995-17.pdf
", "abstract": "We report evidence for the presence of anomalous cosmic ray hydrogen at 1 AU,\nbased on a re-examination of data from the 1976-1977 solar minimum. In particular, the IMP 7&8 (^2H + ^3He)/^1H ratio at -25 MeV shows a marked decrease\nat the time of maximum anomalous He flux levels, indicating a contribution of\n\"anomalous\" protons. These measurements are consistent with the properties of\nanomalous hydrogen observed in the outer heliosphere during 1987 and 1994.", "date": "1995", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20140616-163053633", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140616-163053633", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NASS-30704" }, { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "other_numbering_system": { "items": [ { "id": "1995-17", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Iucci-N", "name": { "family": "Iucci", "given": "N." } }, { "id": "Lamanna-E", "name": { "family": "Lamanna", "given": "E." } } ] }, "primary_object": { "basename": "1995-17.pdf", "url": "https://authors.library.caltech.edu/records/wyggr-bb004/files/1995-17.pdf" }, "pub_year": "1995", "author_list": "Mewaldt, R. A." }, { "id": "https://authors.library.caltech.edu/records/3g52x-b6e04", "eprint_id": 46369, "eprint_status": "archive", "datestamp": "2023-08-20 05:05:52", "lastmod": "2023-10-26 19:41:55", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Milliken-B", "name": { "family": "Milliken", "given": "B." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Silicon Detector Studies with an Interferometric Thickness Mapper", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 IUPAP. Provided by the NASA Astrophysics Data System.\n\nWe are grateful to R Radocinski and B. Sears for help with the data processing.\nThe research described in this paper was supported by the National Aeronautics\nand Space Administration at the California Institute of Technology (under contract\nNAS5-32626 and grant NAGW-1919) and the Jet Propulsion Laboratory. Equipment\nfunding was provided, in part, by the JPL Equipment and Instrumentation Committee.\n\nPublished - 1995-33.pdf
", "abstract": "A laser-interferometer system has been developed to precisely map\nthe thickness variations of large-area silicon detectors. We describe\nthe design and operation of the apparatus and the data processing\ncarried out to derive thickness maps. We compare the results with\na map made using accelerator beams of energetic heavy ions.", "date": "1995", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20140619-144903064", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140619-144903064", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-32626" }, { "agency": "NASA", "grant_number": "NAGW-1919" }, { "agency": "JPL Equipment and Instrumentation Committee" } ] }, "other_numbering_system": { "items": [ { "id": "1995-33", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Iucci-N", "name": { "family": "Iucci", "given": "N." } }, { "id": "Lamanna-E", "name": { "family": "Lamanna", "given": "E." } } ] }, "primary_object": { "basename": "1995-33.pdf", "url": "https://authors.library.caltech.edu/records/3g52x-b6e04/files/1995-33.pdf" }, "pub_year": "1995", "author_list": "Milliken, B.; Leske, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/1zqt3-2w381", "eprint_id": 46317, "eprint_status": "archive", "datestamp": "2023-08-20 05:05:30", "lastmod": "2023-10-26 19:39:50", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "Interpretation of the Low-Energy Cosmic Ray Antiproton/Proton Ratio", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 IUPAP. Provided by the NASA Astrophysics Data System.\n\nThis work was funded by NASA under NAGW-1919. One of us (AL) is grateful for\na NASA Graduate Fellowship. We thank W.R. Webber, T. Gaisser, R. Shaeffer, and R.\nStreitmatter for useful discussions.\n\nPublished - 1995-26.pdf
", "abstract": "We examine the solar modulation of cosmic ray protons and antiprotons, and\ndiscuss the resulting effects on the low-energy antiproton/proton ratio at 1 AU. We\nfind that the anitiproton/proton ratio at energies >3 GeV is a useful diagnostic of\ncosmic ray transport in the Galaxy. However, at energies", "date": "1995", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20140617-163638959", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140617-163638959", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGW-1919" }, { "agency": "NASA Graduate Fellowship" } ] }, "other_numbering_system": { "items": [ { "id": "1995-26", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Iucci-N", "name": { "family": "Iucci", "given": "N." } }, { "id": "Lamanna-E", "name": { "family": "Lamanna", "given": "E." } } ] }, "primary_object": { "basename": "1995-26.pdf", "url": "https://authors.library.caltech.edu/records/1zqt3-2w381/files/1995-26.pdf" }, "pub_year": "1995", "author_list": "Labrador, A. W. and Mewaldt, R. A." }, { "id": "https://authors.library.caltech.edu/records/08aqg-dxx77", "eprint_id": 46831, "eprint_status": "archive", "datestamp": "2023-08-20 05:06:21", "lastmod": "2023-10-26 19:55:44", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Finger-M-H", "name": { "family": "Finger", "given": "Mark H." } }, { "id": "Prince-T-A", "name": { "family": "Prince", "given": "Thomas A." }, "orcid": "0000-0002-8850-3627" } ] }, "title": "The Photon Statistics of Point Source Correlation Images in Coded Aperture Imaging", "ispublished": "unpub", "full_text_status": "restricted", "keywords": "Gamma-Rays: Imaging - Imaging: Coded Aperture", "note": "\u00a9 1995 Kluwer Academic Publishers.", "abstract": "We discuss continuous source images for coded aperture gamma-ray telescopes that\nemploy a mask-antimask pair in conjunction with a continuous position sensitive detector.\nThe images discussed are constructed by correlation of the measured mask-antimask\ndifferenced count rates with the expected point source response. Results are presented\non flux and point source location errors for background dominated observations. These\nshow the impact of the detector's position resolution on the telescope's flux sensitivity\nand source location accuracy. We also discuss the expected frequency of noise peaks of a\ngiven significance in the image.", "date": "1995", "date_type": "published", "publisher": "Kluwer", "place_of_pub": "Dordrecht, Netherlands", "pagerange": "373-378", "id_number": "CaltechAUTHORS:20140703-214216716", "isbn": "0-7923-3788-3", "book_title": "Imaging in High Energy Astronomy", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140703-214216716", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1996-15", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Bassani-L", "name": { "family": "Bassani", "given": "L." } }, { "id": "Di-Cocco-G", "name": { "family": "Di Cocco", "given": "G." } } ] }, "doi": "10.1007/978-94-011-0407-4_62", "pub_year": "1995", "author_list": "Finger, Mark H. and Prince, Thomas A." }, { "id": "https://authors.library.caltech.edu/records/fdnwt-rxb29", "eprint_id": 46316, "eprint_status": "archive", "datestamp": "2023-08-20 05:05:26", "lastmod": "2023-10-26 19:39:48", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Menn-W", "name": { "family": "Menn", "given": "W." } }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "Golden-R-L", "name": { "family": "Golden", "given": "R. L." } }, { "id": "Hof-M", "name": { "family": "Hof", "given": "M." }, "orcid": "0000-0003-2884-3037" }, { "id": "Krombel-K-E", "name": { "family": "Krombel", "given": "K. E." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Ormes-J-F", "name": { "family": "Ormes", "given": "J. F." } }, { "id": "Reimer-O", "name": { "family": "Reimer", "given": "O." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Simon-M", "name": { "family": "Simon", "given": "M." } }, { "id": "Stochaj-S-J", "name": { "family": "Stochaj", "given": "S. J." } }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } }, { "id": "Rasmussen-I-L", "name": { "family": "Rasmussen", "given": "I. L." } }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "Cosmic Ray Antiproton Observations from 0.2 to 3.2 GeV", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 IUPAP. Provided by the NASA Astrophysics Data System.\n\nThis research was supported in part by NASA grant NAGW-1919. One of us (AWL)\nthanks the NASA Graduate Student Researchers Program for its support. The IMAX team\nis grateful to the NSBF for a successful balloon flight.\n\nPublished - 1995-25.pdf
", "abstract": "The Isotope Matter Antimatter Experiment (IMAX) has detected 16 antiprotons,\nin the energy range from 0.2 to 3.2 GeV. This result provides significant\nimprovement in statistical accuracy over previous cosmic ray antiproton\nmeasurements in the same energy range. This measurement has been corrected for\ninstrumental and atmospheric losses, yielding top-of-the-atmosphere antiproton to\nproton ratios in three energy intervals. These results are consistent with recent\ntheoretical predictions in which antiprotons are produced as secondary cosmic rays\nand are transported through the galaxy according to the standard Leaky Box model.", "date": "1995", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20140617-162911825", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140617-162911825", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGW-1919" }, { "agency": "NASA Graduate Student Researchers Program" } ] }, "other_numbering_system": { "items": [ { "id": "1995-25", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Iucci-N", "name": { "family": "Iucci", "given": "N." } }, { "id": "Lamanna-E", "name": { "family": "Lamanna", "given": "E." } } ] }, "primary_object": { "basename": "1995-25.pdf", "url": "https://authors.library.caltech.edu/records/fdnwt-rxb29/files/1995-25.pdf" }, "pub_year": "1995", "author_list": "Labrador, A. W.; Menn, W.; et el." }, { "id": "https://authors.library.caltech.edu/records/34cwm-f6a32", "eprint_id": 46368, "eprint_status": "archive", "datestamp": "2023-08-20 05:05:48", "lastmod": "2023-10-26 19:41:53", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "Geer-L-Y", "name": { "family": "Geer", "given": "L. Y." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Nilsen-B-S", "name": { "family": "Nilsen", "given": "B. S." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } } ] }, "title": "Nuclear Interaction Cross Sections for UltraHeavy Nuclei", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 IUPAP. Provided by the NASA Astrophysics Data System.\n\nE. C. Stone and B. W. Gauld of Caltech and W. R. Binns of Washington\nUniversity contributed significantly. The facilities of the LBL Bevalac and the\nBNL AGS, and the tremendous support of many inclividuals at those facilities\nare gratefully acknowledged. This work has been supported in part by NASA\nand DOE.\n\nPublished - 1995-32.pdf
", "abstract": "We summarize additions to our data base of charge-changing cross\nsections for relativistic ultraheavy nuclei interacting in targets ranging\nfrom H to Pb. We have improved parametric fits to those cross sections\nas functions of energy and of projectile, target, and fragment charge. At\nhigh energies, we have determined cross sections for Au projectiles at 10.6\nGeV /nucleon in targets of H, CH_2, C, Al, Cu, Sn, and Pb. Compared\nwith cross sections at 1 GeV /n, fragment production is substantially\nchanged, especially for the H target. These changes have important implications\nfor calculations of interstellar propagation of ultraheavy nuclei.\nAt lower energies, we have added Kr and Ag to our list of projectiles.\nAnalysis of these data has led to a better understanding of the systematics\nof these cross sections, hence more physically meaningful parameterizations\nfor fragmentation at high energies and for charge pickup.", "date": "1995", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20140619-144509681", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140619-144509681", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" }, { "agency": "Department of Energy (DOE)" } ] }, "other_numbering_system": { "items": [ { "id": "1995-32", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1995-32.pdf", "url": "https://authors.library.caltech.edu/records/34cwm-f6a32/files/1995-32.pdf" }, "pub_year": "1995", "author_list": "Garrard, T. L.; Cummings, J. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/hjmd7-zry67", "eprint_id": 46314, "eprint_status": "archive", "datestamp": "2023-08-20 05:05:21", "lastmod": "2023-10-26 19:39:46", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "Golden-R-L", "name": { "family": "Golden", "given": "R. L." } }, { "id": "Hof-M", "name": { "family": "Hof", "given": "M." }, "orcid": "0000-0003-2884-3037" }, { "id": "Krombel-K-E", "name": { "family": "Krombel", "given": "K. E." } }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Menn-W", "name": { "family": "Menn", "given": "W." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Ormes-J-F", "name": { "family": "Ormes", "given": "J. F." } }, { "id": "Rasmussen-I-L", "name": { "family": "Rasmussen", "given": "I. L." } }, { "id": "Reimer-O", "name": { "family": "Reimer", "given": "O." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Simon-M-I", "name": { "family": "Simon", "given": "M. I." } }, { "id": "Stochaj-S-J", "name": { "family": "Stochaj", "given": "S. J." } }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "Cosmic Ray Antiproton Observations by the Isotope Matter-Antimatter Experiment; 0.2 to 3.2 GeV", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 IUPAP. Provided by the NASA Astrophysics Data System.\n\nIMAX was supported in the United States by NASA and in Germany by DFG and BMFT.\nWe thank NSBF, and the technical staffs of GSFC, Caltech, and the University of Siegen.\n\nPublished - 1995-24.pdf
", "abstract": "We have positively identified sixteen mass-resolved cosmic ray anti.protons\nwith energies between 0.2 and 3.2 GeV using the IMAX balloon-borne\nmagnetic spectrometer. Mass was determined by velocity vs. magnetic\nrigidity techniques using a high resolution time-of-flight system and silica-aerogel\nCherenkov detectors. The anti.protons are clearly separated from the\nlow-mass particle background. Here the measurement technique, data\nanalysis, and resulting proton and antiproton mass histograms are presented.", "date": "1995", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20140617-161246737", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140617-161246737", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" }, { "agency": "Deutsche Forschungsgemeinschaft (DFG), Germany" }, { "agency": "Bundes Ministerium f\u00fcr Forschung und Technologie (BMFT) Germany" } ] }, "other_numbering_system": { "items": [ { "id": "1995-24", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Iucci-N", "name": { "family": "Iucci", "given": "N." } }, { "id": "Lamanna-E", "name": { "family": "Lamanna", "given": "E." } } ] }, "primary_object": { "basename": "1995-24.pdf", "url": "https://authors.library.caltech.edu/records/hjmd7-zry67/files/1995-24.pdf" }, "pub_year": "1995", "author_list": "Mitchell, J. W.; Barbier, L. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/96x3m-djr05", "eprint_id": 43800, "eprint_status": "archive", "datestamp": "2023-08-20 04:44:57", "lastmod": "2024-01-13 06:06:10", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Composition of energetic particles from solar flares", "ispublished": "unpub", "full_text_status": "restricted", "note": "\u00a9 1994 COSPAR.\n\nThis work was supported in part by NAS7-918 and NAGW-1919. The data analysis work done by\nCaltech student Todd Rope was invaluable. The following people were generous with their time and\ncopy machines in assisting us to collect and evaluate the literature reviewed here, and we appreciate it:\nJ. Feynman, S. Kahler, G. Mason, J. Mazur, R. McGuire, R. Mewaldt, E. Moebius, D. Reames, and G.\nSpitale.", "abstract": "We present a model for composition of heavy ions in the solar energetic particles (SEP). The SEP composition in a typical large solar particle event reflects the composition of the Sun, with adjustments due to fractionation effects which depend on the first ionization potential (FIP) of the ion and on the ratio of ionic charge to mass (Q/M). Flare-to-flare variations in composition are represented by parameters describing these fractionation effects and the distributions of these parameters are presented.", "date": "1994-10", "date_type": "published", "publisher": "Pergamon Press", "place_of_pub": "Oxford", "pagerange": "589-598", "id_number": "CaltechAUTHORS:20140212-144700326", "isbn": "0-08-042487-2", "book_title": "Life sciences and space research XXV (2): radiation biology", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140212-144700326", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-918" }, { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Horneck-G", "name": { "family": "Horneck", "given": "G." } } ] }, "doi": "10.1016/0273-1177(94)90514-2", "pub_year": "1994", "author_list": "Garrard, T. L. and Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/6dgrm-rqt78", "eprint_id": 46164, "eprint_status": "archive", "datestamp": "2023-08-20 04:43:07", "lastmod": "2024-01-13 16:05:30", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cook-W-R", "name": { "family": "Cook", "given": "Walter R., III" } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "Alan C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "Richard A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Williams-D-A", "name": { "family": "Williams", "given": "Daniel A." } }, { "id": "Cunningham-T-J", "name": { "family": "Cunningham", "given": "Thomas J." } }, { "id": "Mazed-M", "name": { "family": "Mazed", "given": "Mohammad" } }, { "id": "Fossum-E-R", "name": { "family": "Fossum", "given": "Eric R." } } ] }, "title": "Two-Dimensional Interdigitated Pixel Detector for Energetic Particle Spectrometers", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright \u00a9 1994 SPIE. \n\nThe research described in this paper was conducted by the Space Radiation Laboratory of the California Institute of Technology and by the Center of Space Microelectronics Technology, Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration (NASA), Office of Advanced Concepts and Technology. This work was supported by the NASA under grant NAGW-2806. Reference herein to any specific commercial product, process or service by trade name, trademark, manufacturer, or otherwise, does not constitute or imply endorsement by the United States Government or the Jet Propulsion Laboratory, California Institute of Technology. The authors gratefully acknowledge helpful discussions with Steve Holland of the Lawrence-Berkeley Laboratory.\n\nPublished - 1994-08.pdf
", "abstract": "This paper describes a type of cosmic ray detector suitable for the construction of a small, low power space-based instrument to detect the energy and isotope of energetic nuclei, such as those produced by solar flares. The detector is similar to previous types of silicon PIN detectors where the fully depleted body of the wafer comprises the intrinsic region of the PIN structure. The novel aspect of this detector is that the one surface is divided into a 2D array of pixels, and that the collected holes are divided between a row and a column collector in each pixel, yielding both dimensions of position information from this side of the detector. In a conventional PIN detector, both sides are divided into stripes, and each side provides 1D information. A single large area collector on the opposite side of this new detector is used to determine the energy of the incident nucleus. This scheme requires only a single precision pulse-height amplifier connected to the broad area contract, rather than one for each strip, as in the conventional scheme, resulting in a significant reduction in the mass, power and complexity of the readout electronics. The design, fabrication, and operation of such a detector is discussed. Initial particle tests show a prototype to be functional. The projected power saved by using such as detector is presented.", "date": "1994-09-23", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers (SPIE)", "id_number": "CaltechAUTHORS:20140609-161515101", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140609-161515101", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGW-2806" } ] }, "other_numbering_system": { "items": [ { "id": "1994-08", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Cutts-J-A", "name": { "family": "Cutts", "given": "James A." } } ] }, "doi": "10.1117/12.187471", "primary_object": { "basename": "1994-08.pdf", "url": "https://authors.library.caltech.edu/records/6dgrm-rqt78/files/1994-08.pdf" }, "pub_year": "1994", "author_list": "Cook, Walter R., III; Cummings, Alan C.; et el." }, { "id": "https://authors.library.caltech.edu/records/yn8bb-bhy23", "eprint_id": 46845, "eprint_status": "archive", "datestamp": "2023-08-20 04:29:02", "lastmod": "2024-01-13 16:06:12", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Prince-T-A", "name": { "family": "Prince", "given": "Thomas A." }, "orcid": "0000-0002-8850-3627" }, { "id": "Bildsten-Lars", "name": { "family": "Bildsten", "given": "Lars" }, "orcid": "0000-0001-8038-6836" }, { "id": "Chakrabarty-Deepto", "name": { "family": "Chakrabarty", "given": "Deepto" }, "orcid": "0000-0001-8804-8946" }, { "id": "Wilson-Robert-B", "name": { "family": "Wilson", "given": "Robert B." } }, { "id": "Finger-Mark-H", "name": { "family": "Finger", "given": "Mark H." } } ] }, "title": "Observations of Accreting Pulsars", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1994 American Institute of Physics. \n\nWe acknowledge the important contributions of the entire BATSE team at \nNASA/Marshall Space Flight Center to this work. We recognize in particular \nthe individual contributions of M. Briggs, J. Chiu, G. J. Fishman, L. Gibby, \nJ. M. Grunsfeld, B. A. Harmon, T. Koh, C. A. Meegan, W. S. Paciesas, G. N. \nPendleton, B. C. Rubin, M. T. Stollberg, C. A. Wilson, and N. S. Zhang. This \nwork is funded in part by NASA grants NAGW-1919, NAG 5-1458, NGT-51184 \nand a Lee A. DuBridge fellowship to L.B. funded by the Weingart Foundation.\n\nPublished - 1.46016.pdf
", "abstract": "We discuss recent observations of accreting binary pulsars with the all-sky BATSE instrument on the Compton Gamma Ray Observatory. BATSE has detected and studied nearly half of the known accreting pulsar systems. Continuous timing studies over a two-year period have yielded accurate orbital parameters for 9 of these systems, as well as new insights into long-term accretion torque histories.", "date": "1994-07-05", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "235-244", "id_number": "CaltechAUTHORS:20140703-221743755", "isbn": "1-56396-329-9", "book_title": "The Evolution of X-Ray Binaries", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140703-221743755", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGW-1919" }, { "agency": "NASA", "grant_number": "NAG 5-1458" }, { "agency": "NASA", "grant_number": "NGT-51184" }, { "agency": "Lee A. DuBridge Fellowship" }, { "agency": "Weingart Foundation" } ] }, "other_numbering_system": { "items": [ { "id": "1996-31", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.1063/1.46016", "primary_object": { "basename": "1.46016.pdf", "url": "https://authors.library.caltech.edu/records/yn8bb-bhy23/files/1.46016.pdf" }, "pub_year": "1994", "author_list": "Prince, Thomas A.; Bildsten, Lars; et el." }, { "id": "https://authors.library.caltech.edu/records/ynyyb-e5d45", "eprint_id": 45839, "eprint_status": "archive", "datestamp": "2023-08-20 04:23:28", "lastmod": "2024-01-13 16:05:16", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Chakrabarty-D", "name": { "family": "Chakrabarty", "given": "Deepto" }, "orcid": "0000-0001-8804-8946" }, { "id": "Bildsten-L", "name": { "family": "Bildsten", "given": "Lars" } }, { "id": "Chiu-John", "name": { "family": "Chiu", "given": "John" } }, { "id": "Grunsfeld-J-M", "name": { "family": "Grunsfeld", "given": "John M." } }, { "id": "Koh-Towsian", "name": { "family": "Koh", "given": "Towsian" } }, { "id": "Prince-T-A", "name": { "family": "Prince", "given": "Thomas A." }, "orcid": "0000-0002-8850-3627" }, { "id": "Finger-M-H", "name": { "family": "Finger", "given": "Mark H." } }, { "id": "Wilson-R-B", "name": { "family": "Wilson", "given": "Robert B." } } ] }, "title": "Long-Term Monitoring of the Accreting Pulsar GX 1+4", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1994 American Institute of Physics.\n\nPublished online 20 June 1994.\n\nWe acknowledge the significant contributions to this work by the entire BATSE instrument team\nat NASA/MSFC. We also thank F. K. Lamb for useful comments. This work is supported in part by\nNASA grants NAGW-1919, NAGW-2920, and NAG 5-1458, as well as a Lee A. DuBridge fellowship\nto L.B. funded by the Weingart Foundation.\n\nSubmitted - 1993-34.pdf
", "abstract": "We present preliminary results from two years of GRO/BATSE hard X\u2010ray (20\u2013100 keV) monitoring of the \u223c120 s accretion\u2010powered pulsar GX 1+4. Daily pulse frequency measurements from 1991 April to 1993 September show an average spin\u2010down of \u1e1f\u224a\u22125\u00d710^(\u221212) s^(\u22122), with increases in the spin\u2010down rate during high\u2010luminosity intervals. The 20\u2013100 keV pulsed flux spectrum for the interval TJD 8393\u20138406 is fit by a power\u2010law index of 2.56\u00b10.04. Optical spectroscopy of the suggested red giant companion V2116 Oph taken during the 1993 September X\u2010ray outburst from GX 1+4 show considerably strengthened emission line features, supporting the association.", "date": "1994-06-20", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "New York, NY", "pagerange": "285-289", "id_number": "CaltechAUTHORS:20140520-094539152", "isbn": "1-56396-261-6", "book_title": "The Second Compton Symposium", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140520-094539152", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGW-1919" }, { "agency": "NASA", "grant_number": "NAGW-2920" }, { "agency": "NASA", "grant_number": "NAG 5-1458" }, { "agency": "Lee A. DuBridge Fellowship" }, { "agency": "Weingart Foundation" } ] }, "other_numbering_system": { "items": [ { "id": "1993-34", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Fichtel-C-E", "name": { "family": "Fichtel", "given": "Carl E." } }, { "id": "Gehrels-N", "name": { "family": "Gehrels", "given": "Neil" } }, { "id": "Norris-J-P", "name": { "family": "Norris", "given": "Jay P." } } ] }, "doi": "10.1063/1.45674", "primary_object": { "basename": "1993-34.pdf", "url": "https://authors.library.caltech.edu/records/ynyyb-e5d45/files/1993-34.pdf" }, "pub_year": "1994", "author_list": "Chakrabarty, Deepto; Bildsten, Lars; et el." }, { "id": "https://authors.library.caltech.edu/records/ecm0z-phr69", "eprint_id": 45837, "eprint_status": "archive", "datestamp": "2023-08-20 03:33:01", "lastmod": "2024-01-13 16:05:14", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Bildsten-L", "name": { "family": "Bildsten", "given": "Lars" } }, { "id": "Chakrabarty-D", "name": { "family": "Chakrabarty", "given": "Deepto" }, "orcid": "0000-0001-8804-8946" }, { "id": "Chiu-John", "name": { "family": "Chiu", "given": "John" } }, { "id": "Finger-M-H", "name": { "family": "Finger", "given": "Mark H." } }, { "id": "Grunsfeld-J-M", "name": { "family": "Grunsfeld", "given": "John M." } }, { "id": "Koh-Towsian", "name": { "family": "Koh", "given": "Towsian" } }, { "id": "Prince-T-A", "name": { "family": "Prince", "given": "Thomas A." }, "orcid": "0000-0002-8850-3627" }, { "id": "Wilson-R", "name": { "family": "Wilson", "given": "Robert" } } ] }, "title": "Change in Accretion Torque in the Binary Accreting Pulsar 4U 1626-67", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1994 American Institute of Physics.\n\nPublished online 20 June 1994.\n\nWe would like to acknowledge the significant contributions by the entire BATSE team at the\nNASA/Marshall Space Flight Center. This work is funded in part by NAGGV-1919, NAGW-2920,\nand NAG 5-1458, and a Lee A. DuBridge fellowship to L.B. funded by the Weingart Foundation.\n\nPublished - 1.45633
Submitted - 1993-33.pdf
", "abstract": "We describe two years of BATSE observations of the 7.66 s accreting pulsar 4U 1626-6i. Power\nspectral analysis and period folding techniques with the 1.024 s resolution DISCLA data froru the\nLarge Area Detectors (LADs) have provided nearly continuous monitoring of 4U 1626-6i in the\n20-60 ke V range. The long term frequency history of the source shows nearly constant spin-down\nat a rate of f ~ -7.4 x 10^(-13) s^(-2) , in contrast to the continuous spin-up {with f ~ 8.5 x^(-13) t 3 s- 2)\nobserved previously. We discuss the implications of these results for accretion torque theories and\ncompare this behavior to that of GX 1+4.", "date": "1994", "date_type": "published", "publisher": "American Institute of Physics", "id_number": "CaltechAUTHORS:20140520-093937658", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140520-093937658", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGW-2920" }, { "agency": "NASA", "grant_number": "NAGW-1919" }, { "agency": "NASA", "grant_number": "NAG 5-1458" }, { "agency": "Lee A. DuBridge Fellowship" }, { "agency": "Weingart Foundation" } ] }, "other_numbering_system": { "items": [ { "id": "1993-33", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Fichtel-C-E", "name": { "family": "Fichtel", "given": "Carl E." } }, { "id": "Gehrels-N", "name": { "family": "Gehrels", "given": "N." } }, { "id": "Norris-J-P", "name": { "family": "Norris", "given": "Jay P." } } ] }, "doi": "10.1063/1.45633", "primary_object": { "basename": "1.45633", "url": "https://authors.library.caltech.edu/records/ecm0z-phr69/files/1.45633" }, "related_objects": [ { "basename": "1993-33.pdf", "url": "https://authors.library.caltech.edu/records/ecm0z-phr69/files/1993-33.pdf" } ], "pub_year": "1994", "author_list": "Bildsten, Lars; Chakrabarty, Deepto; et el." }, { "id": "https://authors.library.caltech.edu/records/bgjf1-7m274", "eprint_id": 45844, "eprint_status": "archive", "datestamp": "2023-08-20 03:33:10", "lastmod": "2024-01-13 16:05:18", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Kangas-J", "name": { "family": "Kangas", "given": "J." } }, { "id": "Kerridge-S-J", "name": { "family": "Kerridge", "given": "S.J." } }, { "id": "Neugebauer-M", "name": { "family": "Neugebauer", "given": "M." } } ] }, "title": "A Small Interstellar Probe to the Heliospheric Boundary and Interstellar Space", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright \u00a9 1994 Published by Elsevier Ltd.\n\nWe appreciate contributions from a variety of individuals, including A.\nCummings, C. Elachi, M. Evans, M. Forman, M. Gruntman, W. Kurth, T. Holzer, K. Hurley, V.\nJones, D. Judge, F. McDonald, E. Mobius, F. Mozer, D. Schemansky, E. Smith, E. Stone, B.\nTsurutani, and M. Witte. The work was at JPL was funded under contract to NASA; the work at\nCaltech was supported by NASA grant NAGW-1919.\n\nSubmitted - 1994-02.pdf
", "abstract": "The Small Interstellar Probe m1ss1on would be designed to cross the solar wind\ntermination shock and the heliopause, and make a significant penetration into nearby\ninterstellar space. The principal scientific objectives of this mission would be to explore the\nstructure of the heliosphere, to investigate its interaction with the interstellar medium, and to\nexplore the nature of the interstellar medium itself. These studies would be carried out by a\n~200 kg spacecraft carrying a scientific payload designed to make comprehensive, in situ\nmeasurements of both heliospheric and interstellar plasma, fields, energetic particles, gas, and\ndust. New trajectory calculations indicate significantly improved performance over earlier\nstudies with larger spacecraft, including spacecraft velocities ranging from -6 to -14 AU/yr.,\ndepending on trajectory and launch vehicle.", "date": "1994", "date_type": "published", "publisher": "Pergamon Press", "id_number": "CaltechAUTHORS:20140520-102557928", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140520-102557928", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "other_numbering_system": { "items": [ { "id": "1994-02", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Marec-J-P", "name": { "family": "Marec", "given": "J. P." } }, { "id": "Chernyi-G-G", "name": { "family": "Chernyi", "given": "G. G." } }, { "id": "Grey-J", "name": { "family": "Grey", "given": "J." } }, { "id": "Saito-S", "name": { "family": "Saito", "given": "S." } } ] }, "doi": "10.1016/0094-5765(94)00192-O", "primary_object": { "basename": "1994-02.pdf", "url": "https://authors.library.caltech.edu/records/bgjf1-7m274/files/1994-02.pdf" }, "pub_year": "1994", "author_list": "Mewaldt, R. A.; Kangas, J.; et el." }, { "id": "https://authors.library.caltech.edu/records/dz0nv-fm396", "eprint_id": 71227, "eprint_status": "archive", "datestamp": "2023-08-20 03:13:58", "lastmod": "2024-01-13 16:54:39", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cunningham-T-J", "name": { "family": "Cunningham", "given": "Thomas J." } }, { "id": "Mazed-M", "name": { "family": "Mazed", "given": "Mohaminad" } }, { "id": "Holtzman-M-J", "name": { "family": "Holtzman", "given": "Melinda J." } }, { "id": "Fossum-E-R", "name": { "family": "Fossum", "given": "Eric R." } }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "Walter R., III" } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "Alan C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "Richard A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "Cosmic-ray detector with interdigitated-finger pixels for two-dimensional position information from a single wafer side", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1993 SPIE. \n\nThe research described in this paper was conducted by the Jet Propulsion Laboratory, California Institute of Technology and by the Space Radiation Laboratory of the California Institute of Technology under a contract with the National Aeronautics and Space Administration. The authors gratefully acknowledge helpful discussions with Steve Holland of the Lawrence-Berkeley Laboratory and Debra Hebert of the ERL Microlabs of the University of California at Berkeley. The authors also wish to thank Chuck Manning, Suzanne Martin, and Jim Wishard of the Jet Propulsion Laboratory MicroDevices Laboratory for technical assistance.\n\nPublished - 15_1.pdf
", "abstract": "This paper describes a type of cosmic ray detector for isotopic and energy detection of energetic nuclei which derives both dimensions of position information from one side of the detector. This simplifies the required readout electronics, since only one precision amplifier connected to the other side is required for an accurate detection of the energy loss. Two dimensional readout is enabled by the use of pixels consisting of closely spaced interdigitated electrodes alternately connected to row and column lines. Spreading of the charge produced by the cosmic ray results in the charge being collected by more than one electrode producing both a row and column signal on one side of the detector. The design, fabrication, and characterization of the interdigitated-pixel detector is discussed.", "date": "1993-10-19", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers", "place_of_pub": "Bellingham, WA", "pagerange": "15-22", "id_number": "CaltechAUTHORS:20161018-131737795", "isbn": "9780819411846", "book_title": "Astroparticle Physics and Novel Gamma-Ray Telescopes", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20161018-131737795", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA/JPL/Caltech" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Cline-D-B", "name": { "family": "Cline", "given": "David B." } } ] }, "doi": "10.1117/12.161384", "primary_object": { "basename": "15_1.pdf", "url": "https://authors.library.caltech.edu/records/dz0nv-fm396/files/15_1.pdf" }, "pub_year": "1993", "author_list": "Cunningham, Thomas J.; Mazed, Mohaminad; et el." }, { "id": "https://authors.library.caltech.edu/records/62qfx-zte83", "eprint_id": 45848, "eprint_status": "archive", "datestamp": "2023-08-20 03:01:04", "lastmod": "2023-10-26 18:29:42", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } } ] }, "title": "TENNIS: A Standard for Data Formatting, Input, and Output", "ispublished": "unpub", "full_text_status": "restricted", "note": "\u00a9 1993 American Institute of Physics.\n\nPublished online 01 August 1993.", "abstract": "A technique for documenting, formatting, and storing data is introduced and briefly described. The documentation standard, now labeled the tennis standard, allows creation of function libraries and utilities to gain access to the data, greatly facilitating input and output; these functions and utilities are described. A comparison of this standard with the better known HDF and CDF standards is made.", "date": "1993-08-01", "date_type": "published", "publisher": "American Instittue of Physics", "id_number": "CaltechAUTHORS:20140520-111256410", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140520-111256410", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1994-04", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.1063/1.44476", "pub_year": "1993", "author_list": "Garrard, T. L." }, { "id": "https://authors.library.caltech.edu/records/r3k2b-3zj77", "eprint_id": 51834, "eprint_status": "archive", "datestamp": "2023-08-20 02:56:06", "lastmod": "2024-01-13 16:12:33", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Ray-P-S", "name": { "family": "Ray", "given": "P. S." }, "orcid": "0000-0002-5297-5278" }, { "id": "Grove-J-E", "name": { "family": "Grove", "given": "J. E." } }, { "id": "Kurfess-J-D", "name": { "family": "Kurfess", "given": "J.D." } }, { "id": "Prince-T-A", "name": { "family": "Prince", "given": "Thomas A." }, "orcid": "0000-0002-8850-3627" }, { "id": "Ulmer-M-P", "name": { "family": "Ulmer", "given": "M. P." } } ] }, "title": "An OSSE Search for the Binary Radio Pulsar 1259-63", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1993 American Institute of Physics.\n\nPublished online 05 July 1993.\n\nPublished - 1997-34.pdf
", "abstract": "We have searched data from the Oriented Scintillation Spectrometer Experiment (OSSE) on the Compton Gamma Ray Observatory (GRO) for evidence of low\u2010energy \u03b3\u2010ray emission from the binary radio pulsar PSR1259\u221263. This 47 ms pulsar is in a long\u2010period, highly eccentric orbit around a Be stellar companion and was observed by OSSE approximately 400 days after periastron. The period derivative allowed by the published radio ephemeris (Johnston et al. 1992) suggests that the pulsar might be relatively young, and therefore a \u03b3\u2010ray source. However, the ephemeris is not sufficiently accurate to allow the traditional epoch\u2010folding technique over the full OSSE observation. Instead, the OSSE data were analyzed using Fourier transform spectral techniques after applying trial accelerations to correct for a range of possible orbital accelerations. We searched 48 accelerations; each FFT was 2 ^2^9 points sampled at 2 ms, spanning \u223c106 seconds of observation time. There was no evidence of pulsed emission in the 64\u2013150 keV band, with a 99.9% confidence upper limit of 6\u00d710^(\u2212)3 photons cm^(\u22122) s^(\u22121) MeV\u2212 1 or \u223c40 m Crab pulsars, which suggests that the pulsar's intrinsic period derivative is small and its magnetic field weak. This work was performed on the Concurrent Supercomputing Consortium's Intel Touchstone Delta parallel supercomputer as part of a GRO Phase 1 Guest Investigation.", "date": "1993-07-05", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Woodbury, NY", "pagerange": "249-253", "id_number": "CaltechAUTHORS:20141117-102158995", "isbn": "1-56396-104-0", "book_title": "Compton X-Ray Observatory", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141117-102158995", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1997-34", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Friedlander-M", "name": { "family": "Friedlander", "given": "M." } }, { "id": "Gehrels-N", "name": { "family": "Gehrels", "given": "N." } }, { "id": "Macomb-D-J", "name": { "family": "Macomb", "given": "D. J." } } ] }, "doi": "10.1063/1.44128", "primary_object": { "basename": "1997-34.pdf", "url": "https://authors.library.caltech.edu/records/r3k2b-3zj77/files/1997-34.pdf" }, "pub_year": "1993", "author_list": "Ray, P. S.; Grove, J. E.; et el." }, { "id": "https://authors.library.caltech.edu/records/1qjyc-4mm98", "eprint_id": 43789, "eprint_status": "archive", "datestamp": "2023-08-20 02:53:06", "lastmod": "2023-10-25 23:52:34", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "The Distance to the Solar Wind Termination Shock During 1986 - 1988", "ispublished": "unpub", "full_text_status": "restricted", "note": "\u00a9 1993 University of Calgary.\n\nWe are grateful to J. T. Hoeksema for providing\nthe neutral sheet tilt data in machine\nreadable form. This work was supported in\npart by NASA under contract NAS7-918 \nand grant NAGW-1919.", "abstract": "We use observations of the intensity of anomalous cosmic ray oxygen in the outer\nheliosphere near the last solar minimum period, in conjunction with observations\nof the average tilt of the neutral current sheet, to estimate that the solar wind termination\nshock was at 62 \u00b1 2 AU during the time period 1986.5 - 1988.5 and that\nthe flux of 7.1 - 17.1 MeV/nuc anomalous cosmic ray oxygen at the shock was\n1.27 \u00b1 0.04 p/m^2 sec sr MeV/nuc.", "date": "1993-07", "date_type": "published", "publisher": "University of Calgary", "id_number": "CaltechAUTHORS:20140212-082424248", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140212-082424248", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-918" }, { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Leahy-D-A", "name": { "family": "Leahy", "given": "D. A." } }, { "id": "Hickws-R-B", "name": { "family": "Hickws", "given": "R. B." } }, { "id": "Venkatesan-D", "name": { "family": "Venkatesan", "given": "D." } } ] }, "pub_year": "1993", "author_list": "Cummings, A. C.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/ksf0f-fqx51", "eprint_id": 43788, "eprint_status": "archive", "datestamp": "2023-08-20 02:53:00", "lastmod": "2023-10-25 23:52:26", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Selesnick-R-S", "name": { "family": "Selesnick", "given": "R. S." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "New Evidence for Anomalous Cosmic Rays Trapped in the Magnetosphere", "ispublished": "unpub", "full_text_status": "restricted", "note": "\u00a9 1993 University of Calgary.\n\nThis work was supported by NASA under contract NAS5-30704\nand grant NAGW-1919.", "abstract": "We report new observations of \u2265 15 MeV/nuc trapped heavy ions with Z \u2265 2, made on\nthe polar-orbiting SAMPEX spacecraft in late 1992. A trapped population, located\nprimarily near the SAA, includes He, N, O, and Ne. We conclude that they are\n\"anomalous\" cosmic rays trapped by the mechanism proposed by Blake and Friesen.", "date": "1993-07", "date_type": "published", "publisher": "University of Calgary", "id_number": "CaltechAUTHORS:20140212-081705878", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140212-081705878", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-30704" }, { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Leahy-D-A", "name": { "family": "Leahy", "given": "D. A." } }, { "id": "Hickws-R-B", "name": { "family": "Hickws", "given": "R. B." } }, { "id": "Venkatesan-D", "name": { "family": "Venkatesan", "given": "D." } } ] }, "pub_year": "1993", "author_list": "Cummings, J. R.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/5y0m4-wkd62", "eprint_id": 43794, "eprint_status": "archive", "datestamp": "2023-08-20 02:53:35", "lastmod": "2023-10-25 23:53:00", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } }, { "id": "Stochaj-S-J", "name": { "family": "Stochaj", "given": "S.J." } }, { "id": "Rasmussen-I-L", "name": { "family": "Rasmussen", "given": "I. L." } } ] }, "title": "Silica Aerogel Cherenkov Counters for the Isotope Matter-Antimatter Experiment", "ispublished": "unpub", "full_text_status": "restricted", "note": "\u00a9 1993 University of Calgary.\n\nWe thank Bob Golden and the NMSU-BBMF crew for providing overall\npayload support. Glen Albritton and Caltech's Central Engineering Service were\ninstrumental in the construction of the counters. This research was supported in part\nby NASA grant NAGW-1919. One of us (AWL) thanks the NASA Graduate Student Researchers Program tor its support.", "abstract": "We describe the design, development, and performance of the large area aerogel\nCherenkov counters employed in the Isotope Matter-Antimatter Experiment (IMAX),\na balloon-borne, magnet spectrometer. IMAX incorporated two Cherenkov counters\ncontaining silica aerogels of refractive index n=1.055 for velocity measurement and\nelectron/muon background rejection. We describe aerogel baking techniques which\nwere found to improve measured light output from 30% to more than 100% for\nindividual aerogel blocks, as well as mounting techniques that preserved the integrity\nof the aerogel radiators during shipping, balloon flight, and parachute landing. The\ninstrument flew successfully from Lynn Lake, Manitoba, Canada, on 16 July 1992,\nremaining at float for ~16 hours. Laboratory measurements and analysis of pre-flight\ndata on the counters' performance are presented.", "date": "1993-07", "date_type": "published", "publisher": "University of Calgary", "id_number": "CaltechAUTHORS:20140212-101632365", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140212-101632365", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGW-1919" }, { "agency": "NASA Graduate Student Researchers Program" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Leahy-D-A", "name": { "family": "Leahy", "given": "D. A." } }, { "id": "Hickws-R-B", "name": { "family": "Hickws", "given": "R. B." } }, { "id": "Venkatesan-D", "name": { "family": "Venkatesan", "given": "D." } } ] }, "pub_year": "1993", "author_list": "Labrador, A. W.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/wfgda-emk59", "eprint_id": 43793, "eprint_status": "archive", "datestamp": "2023-08-20 02:53:27", "lastmod": "2023-10-25 23:52:54", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "New SEP-Based Solar Abundances", "ispublished": "unpub", "full_text_status": "restricted", "note": "\u00a9 1993 University of Calgary.\n\nThis work has been partially supported by NASA under NAS7-918. We acknowledge excellent assistance from M. Looper in data analysis and presentation.", "abstract": "The relative abundances of various elements in the solar photosphere and\nthe solar corona are re-determined from relative abundances of solar\nenergetic particles (SEP) in the light of revised solar spectroscopic\nabundances. We find excellent correlation between SEP-based\nabundances and spectroscopic abundances, after correcting for\nfractionation due to ionic charge-to-mass ratio and first ionization\npotential.", "date": "1993-07", "date_type": "published", "publisher": "University of Calgary", "id_number": "CaltechAUTHORS:20140212-100928259", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140212-100928259", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-918" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Leahy-D-A", "name": { "family": "Leahy", "given": "D. A." } }, { "id": "Hickws-R-B", "name": { "family": "Hickws", "given": "R. B." } }, { "id": "Venkatesan-D", "name": { "family": "Venkatesan", "given": "D." } } ] }, "pub_year": "1993", "author_list": "Garrard, T. L. and Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/qy6rr-f2239", "eprint_id": 43796, "eprint_status": "archive", "datestamp": "2023-08-20 02:53:42", "lastmod": "2023-10-25 23:53:11", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Selesnick-R-S", "name": { "family": "Selesnick", "given": "R. S." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Measurements of the Composition of Galactic Cosmic Rays on SAMPEX", "ispublished": "unpub", "full_text_status": "restricted", "note": "\u00a9 1993 University of Calgary.\nThis work is supported in part by NASA under contract NAS5-30704 and grant NAGW-1919.", "abstract": "The Mass Spectrometer Telescope (MAST) on board the Solar, Anomalous, and\nMagnetospheric Particle Explorer (SAMPEX) satellite is designed to make high\nresolution measurements of the elemental and isotopic composition of cosmic rays\nfrom ~C to Ni over the energy interval of ~15 to 300 MeV per nucleon. At this\nconference, we will present a preliminary look at the composition of galactic cosmic\nrays as measured with this instrument, based on approximately the first 6 months of\ndata.", "date": "1993-07", "date_type": "published", "publisher": "University of Calgary", "id_number": "CaltechAUTHORS:20140212-113840884", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140212-113840884", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-30704" }, { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Leahy-D-A", "name": { "family": "Leahy", "given": "D. A." } }, { "id": "Hickws-R-B", "name": { "family": "Hickws", "given": "R. B." } }, { "id": "Venkatesan-D", "name": { "family": "Venkatesan", "given": "D." } } ] }, "pub_year": "1993", "author_list": "Leske, R. A.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/6tqe9-1n669", "eprint_id": 43792, "eprint_status": "archive", "datestamp": "2023-08-20 02:53:21", "lastmod": "2023-10-25 23:52:49", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Selesnick-R-S", "name": { "family": "Selesnick", "given": "R. S." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "Isotopic Composition of Solar Energetic Particles Observed in the October/November, 1992 Solar Flares", "ispublished": "unpub", "full_text_status": "restricted", "note": "\u00a9 1993 University of Calgary.\nThis work was supported by NASA under contract NAS5-30704 and grant NAGW-1919.", "abstract": "We report on abundances of >20 MeV/nuc Ne and Mg isotopes measured during\ntwo large solar flares in October and November, 1992, by the Mass Spectrometer\nTelescope on SAMPEX. The observed ^(22)Ne/^(20)Ne ratio of -0.07 is consistent with\nthe solar wind value of 0.073, in contrast to previous SEP measurements in which\n^(22)Ne was substantially enhanced.", "date": "1993-07", "date_type": "published", "publisher": "University of Calgary", "id_number": "CaltechAUTHORS:20140212-092741225", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140212-092741225", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-30704" }, { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Leahy-D-A", "name": { "family": "Leahy", "given": "D. A." } }, { "id": "Hickws-R-B", "name": { "family": "Hickws", "given": "R. B." } }, { "id": "Venkatesan-D", "name": { "family": "Venkatesan", "given": "D." } } ] }, "pub_year": "1993", "author_list": "Selesnick, R. S.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/p1kej-7c243", "eprint_id": 43790, "eprint_status": "archive", "datestamp": "2023-08-20 02:53:13", "lastmod": "2023-10-25 23:52:37", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "The Return of the Anomalous Component to 1 AU in 1992", "ispublished": "unpub", "full_text_status": "restricted", "note": "\u00a9 1993 University of Calgary.\n\nWe are grateful to J. Labonte and J. Lockwood for providing\nunpublished Mt. Washington neutron monitor data and to J. T. Hoeksema for\nproviding unpublished neutral sheet tilt data. This work was supported by NASA\nunder contract NAS5-30704 and grant NAGW-1919.", "abstract": "New observations of low energy (15 to 200 MeV/nuc) cosmic rays from SAMPEX\nshow the strong presence of anomalous cosmic ray (ACR) N, O, and Ne, well before\nthe approaching solar minimum. When compared with ACR temporal variations over\nthe past two solar cycles we find that the 1992 fluxes are ~5 to 10 times their level at\ncorresponding neutron monitor counting rates in 1969-1970 and 1985.", "date": "1993-07", "date_type": "published", "publisher": "University of Calgary", "id_number": "CaltechAUTHORS:20140212-082936422", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140212-082936422", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-30704" }, { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Leahy-D-A", "name": { "family": "Leahy", "given": "D. A." } }, { "id": "Hickws-R-B", "name": { "family": "Hickws", "given": "R. B." } }, { "id": "Venkatesan-D", "name": { "family": "Venkatesan", "given": "D." } } ] }, "pub_year": "1993", "author_list": "Mewaldt, R. A.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/8qa5c-8jj87", "eprint_id": 50254, "eprint_status": "archive", "datestamp": "2023-08-20 02:05:11", "lastmod": "2023-10-17 22:52:53", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "McDonald-F-B", "name": { "family": "McDonald", "given": "F. B." } }, { "id": "Barnes-A", "name": { "family": "Barnes", "given": "A." } }, { "id": "Burlaga-L-F", "name": { "family": "Burlaga", "given": "L. F." }, "orcid": "0000-0002-5569-1553" }, { "id": "Mihalov-J", "name": { "family": "Mihalov", "given": "J." } }, { "id": "Selesnick-R-S", "name": { "family": "Selesnick", "given": "R. S." } }, { "id": "Gazis-P", "name": { "family": "Gazis", "given": "P." } } ] }, "title": "The Effects of the Intense Solar Activity of March/June 1991 Observed in the Outer Heliosphere", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright University of Calgary. Provided by the NASA Astrophysics Data System.\n\nThe authors wish to express their appreciation to J. W. Belcher and A. Lazarus for making the solar wind data available from the MIT Voyager II Solar Wind Experiment.\n\nPublished - 1993-15.pdf
", "abstract": "The properties of the large scale Global Merged Interaction Region(GMIR)generated by the intense solar events of March and June 1991 with their marked south-north assymetry are studied using the available solar wind, interplanetary\nmagnetic field and energetic particle data from the observing network of Pioneer 10 and Voyager 1 and 2 in the outer heliosphere.", "date": "1993", "date_type": "published", "publisher": "World Scientific", "id_number": "CaltechAUTHORS:20141008-083536839", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141008-083536839", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1993-15", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Leahy-D-A", "name": { "family": "Leahy", "given": "D. A." } }, { "id": "Hicks-R-B", "name": { "family": "Hickws", "given": "R. B." } }, { "id": "Venkatesan-D", "name": { "family": "Venkatesan", "given": "D." } } ] }, "primary_object": { "basename": "1993-15.pdf", "url": "https://authors.library.caltech.edu/records/8qa5c-8jj87/files/1993-15.pdf" }, "pub_year": "1993", "author_list": "McDonald, F. B.; Barnes, A.; et el." }, { "id": "https://authors.library.caltech.edu/records/nmm7v-ref30", "eprint_id": 50648, "eprint_status": "archive", "datestamp": "2023-08-20 02:06:23", "lastmod": "2023-10-18 00:00:43", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Geer-L-Y", "name": { "family": "Geer", "given": "L. Y." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Nilsen-B-S", "name": { "family": "Nilsen", "given": "B. S." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } } ] }, "title": "Energy Dependence of the Fragmentation of UH-Nuclei", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Calgary. Provided by the NASA Astrophysics Data System.\n\nThis work was supported in part by NASA and DOE. We thank\nE. C. Stone, B. W. Gauld, Dana Beavis, and the staff of Brookhaven National Laboratory.\n\nPublished - 1993-24.pdf
", "abstract": "The fragmentation of 10.6 GeV/n Au in CH_2. C, Al, Cu, Sn, and Pb targets has been studied using an array of ion chambers, multi-wire proportional counters (MWPC), \nand Cherenkov counters. Total charge-changing cross sections were found to be monotonically increasing with target charge over cross sections measured and\nderived from lower energy data. Partial charge-changing cross sections yielding charge changes less than 1O were depressed from those measured at lower energy.", "date": "1993", "date_type": "published", "publisher": "World Scientific", "id_number": "CaltechAUTHORS:20141021-163711864", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141021-163711864", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" }, { "agency": "Department of Energy (DOE)" } ] }, "other_numbering_system": { "items": [ { "id": "1993-24", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Leahy-D-A", "name": { "family": "Leahy", "given": "D. A." } }, { "id": "Hickws-R-B", "name": { "family": "Hickws", "given": "R. B." } }, { "id": "Venkatesan-D", "name": { "family": "Venkatesan", "given": "D." } } ] }, "primary_object": { "basename": "1993-24.pdf", "url": "https://authors.library.caltech.edu/records/nmm7v-ref30/files/1993-24.pdf" }, "pub_year": "1993", "author_list": "Geer, L. Y.; Klarmann, J.; et el." }, { "id": "https://authors.library.caltech.edu/records/3jm4g-wtn89", "eprint_id": 50672, "eprint_status": "archive", "datestamp": "2023-08-20 02:06:33", "lastmod": "2023-10-18 00:02:09", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Nilsen-B-S", "name": { "family": "Nilsen", "given": "B. S." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } } ] }, "title": "Fragmentation of Relativistic Krypton and Silver Nuclei", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Calgary. Provided by the NASA Astrophysics Data System.\n\nPartially supported by NASA grants.\n\nPublished - 1993-25.pdf
", "abstract": "In 1990 we exposed a wide range of targets to beams of relativistic krypton and silver nuclei at the LBL Bevalac at energies from 0.5 to 1.5 GeV/nucleon. Incoming and fragmented nuclei were detected in an array of ion chambers,\nCherenkov detectors, and multiwire proportional chambers. The total and partial cross sections for charge-changing interactions have been measured, with emphasis on those of cosmic ray interest. These cross sections are compared to those from parametric fits.", "date": "1993", "date_type": "published", "publisher": "World Scientific", "id_number": "CaltechAUTHORS:20141022-094729368", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141022-094729368", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" } ] }, "other_numbering_system": { "items": [ { "id": "1993-25", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Leahy-D-A", "name": { "family": "Leahy", "given": "D. A." } }, { "id": "Hickws-R-B", "name": { "family": "Hickws", "given": "R. B." } }, { "id": "Venkatesan-D", "name": { "family": "Venkatesan", "given": "D." } } ] }, "primary_object": { "basename": "1993-25.pdf", "url": "https://authors.library.caltech.edu/records/3jm4g-wtn89/files/1993-25.pdf" }, "pub_year": "1993", "author_list": "Nilsen, B. S.; Waddington, C. J.; et el." }, { "id": "https://authors.library.caltech.edu/records/z8wav-rj233", "eprint_id": 45808, "eprint_status": "archive", "datestamp": "2023-08-20 02:04:08", "lastmod": "2023-10-26 18:28:13", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. R." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Cunningham-T-J", "name": { "family": "Cunningham", "given": "T. J." } }, { "id": "Mazed-M", "name": { "family": "Mazed", "given": "M." } }, { "id": "Fossum-E-R", "name": { "family": "Fossum", "given": "E. R." } } ] }, "title": "An Interdigitated Pixel PIN Detector for Energetic Particle Spectroscopy in Space", "ispublished": "unpub", "full_text_status": "public", "note": "This work was supported by NASA under grant NAGW-2806. We\nappreciate helpful discussions with T. Daud.\n\nSubmitted - 1993-31.pdf
", "abstract": "We describe a new two-dimensional position-sensitive detector, now under\ndevelopment, for use in space-borne energetic particle spectrometers. The novel\nfeature of this device is the use of interdigitated pixels to provide both dimensions of\nposition information from a single side of the detector, while a measurement of the\nenergy deposition is derived from the opposite side. An advantage of this approach is\nthat significant reductions in the complexity, power, and weight of the associated\nread-out electronics can be realized without sacrificing position or energy resolution.", "date": "1993", "date_type": "published", "publisher": "National Aeronautics Space Division", "id_number": "CaltechAUTHORS:20140516-114149179", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140516-114149179", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGW-2806" } ] }, "other_numbering_system": { "items": [ { "id": "1993-31", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Tsurutani-B-T", "name": { "family": "Tsurutani", "given": "B. T." } } ] }, "primary_object": { "basename": "1993-31.pdf", "url": "https://authors.library.caltech.edu/records/z8wav-rj233/files/1993-31.pdf" }, "pub_year": "1993", "author_list": "Mewaldt, R. A.; Cook, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/3x9w7-6yk38", "eprint_id": 50248, "eprint_status": "archive", "datestamp": "2023-08-20 02:04:41", "lastmod": "2023-10-17 22:52:38", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Leske-R-A", "name": { "family": "Leske", "given": "R. A." }, "orcid": "0000-0002-0156-2414" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Composition Measurements from ISEE-3: Fluorine through Calcium", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Calgary. Provided by the NASA Astrophysics Data System.\n\nPublished - 1993-13.pdf
", "abstract": "Spacecraft measurements are reported of the elemental composition of galactic cosmic rays with 9 \u2264 Z \u2264 5 ~20 at energies ~220 MeV /nucleon. In addition, for the elements with 16 \u2264 Z \u2264 20 isotopic composition results are reported. The measured composition is found to be in generally good agreement with that expected from a propagated solar-like source.", "date": "1993", "date_type": "published", "publisher": "World Scientific", "id_number": "CaltechAUTHORS:20141007-161405451", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141007-161405451", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1993-13", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1993-13.pdf", "url": "https://authors.library.caltech.edu/records/3x9w7-6yk38/files/1993-13.pdf" }, "pub_year": "1993", "author_list": "Leske, R. A. and Wiedenbeck, M. E." }, { "id": "https://authors.library.caltech.edu/records/961jz-90r15", "eprint_id": 50673, "eprint_status": "archive", "datestamp": "2023-08-20 02:06:37", "lastmod": "2023-10-18 00:02:11", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Selesnick-R-S", "name": { "family": "Selesnick", "given": "R. S." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "SAMPEX Observations of Geomagnetically Trapped Anomalous Cosmic Rays", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright University of Calgary. Provided by the NASA Astrophysics Data System.\n\nBrownlee Gauld and Daniel Williams gave valuable assistance in data analysis. We appreciate conversations with J. H. Adams, Jr., J.B. Blake, and A. J. Tylka.\n\nPublished - 1993-35.pdf
", "abstract": "We summarize observations of trapped anomalous cosmic rays made with the Mass Spectrometer Telescope (MASn on the polar-orbiting SAMPEX spacecraft during late 1992 and early 1993. MAST observes a trapped population of heavy ions with ~15 MeV/nuc that includes N, 0, and Ne, but very little C, located in a narrow belt at L=2. The characteristics of\nthis radiation belt are generally consistent with those expected from the mechanism proposed by Blake and Friesen for trapping anomalous cosmic rays in the magnetosphere and with COSMOS observations made during the last solar minimum. We discuss the location, composition, and temporal history of the trapped heavy ions observed with SAMPEX and\ncompare them with properties of anomalous cosmic rays observed in the interplanetary medium. Although trapped He ions are also observed by MAST, it appears likely that they\nhave a different origin.", "date": "1993", "date_type": "published", "publisher": "World Scientific", "id_number": "CaltechAUTHORS:20141022-095413422", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141022-095413422", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGW-1919" }, { "agency": "NASA", "grant_number": "NAS5-30704" } ] }, "other_numbering_system": { "items": [ { "id": "1993-35", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Leahy-D-A", "name": { "family": "Leahy", "given": "D. A." } }, { "id": "Hickws-R-B", "name": { "family": "Hickws", "given": "R. B." } }, { "id": "Venkatesan-D", "name": { "family": "Venkatesan", "given": "D." } } ] }, "primary_object": { "basename": "1993-35.pdf", "url": "https://authors.library.caltech.edu/records/961jz-90r15/files/1993-35.pdf" }, "pub_year": "1993", "author_list": "Cummings, J. R.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/et60w-z5434", "eprint_id": 50649, "eprint_status": "archive", "datestamp": "2023-08-20 02:06:28", "lastmod": "2023-10-18 00:00:45", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "McGuire-P", "name": { "family": "McGuire", "given": "P." } }, { "id": "Bowen-T", "name": { "family": "Bowen", "given": "T." } }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Golden-R-L", "name": { "family": "Golden", "given": "R. L." } }, { "id": "Kimbell-B", "name": { "family": "Kimbell", "given": "B." } }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Menn-W", "name": { "family": "Menn", "given": "W." } }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Reimer-O", "name": { "family": "Reimer", "given": "O." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Simon-M-I", "name": { "family": "Simon", "given": "M." } }, { "id": "Stochaj-S-J", "name": { "family": "Stochaj", "given": "S. J." } }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } } ] }, "title": "High-Altitude Time-of-Flight Search for Non-Weakly Interacting Dark Matter in Cosmic Rays", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright University of Calgary. Provided by the NASA Astrophysics Data System.\n\nWe would like to thank T. Metcalfe, P. Halverson, R. Norton, A. Pifer, L.Russo, J. Pando, R. Hall, D. Righter, R. Park, G. Albritton, S. Holder, M. Simon, 0. Reimer, W. Menn, B.Kimbell, R. Golden, and \"Max\" for their assistance in preparing for the balloon flight, and the University of Arizona Experimental Elementary Particles Group for access to their more-than-adequate VAX-cluster for post-flight data\nanalysis. A U.S. Dept. of Education/NSF fellowship supported P. McGuire for much of the pre-flight preparations. This work is also supported by NSF Grant 91-21427.\n\nPublished - 1993-20.pdf
", "abstract": "Supermassive electrically- or strongly-charged particles might constitute the missing matter in the galaxy. These particles would be non-relativistic, but nevertheless if these hypothetical particles have high enough mass, they might have enough momentum to be detectable below 5 g/cm^2 of atmosphere. We apply the time-of-flight technique to search for these hypothetical slow-moving, supermassive, highly-interacting particles at balloon altitude. We present un-cut histograms and a scatterplot of actual flight data, showing that we can account for most of the events as accidental coincidences. We can reject most (if not all) of these accidental coincidences by requiring a 4-counter coincidence, and by requiring very small changes in velocity in the interior detectors.", "date": "1993", "date_type": "published", "publisher": "World Scientific", "id_number": "CaltechAUTHORS:20141021-163735747", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141021-163735747", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF" } ] }, "other_numbering_system": { "items": [ { "id": "1993-20", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Leahy-D-A", "name": { "family": "Leahy", "given": "D. A." } }, { "id": "Hickws-R-B", "name": { "family": "Hickws", "given": "R. B." } }, { "id": "Venkatesan-D", "name": { "family": "Venkatesan", "given": "D." } } ] }, "primary_object": { "basename": "1993-20.pdf", "url": "https://authors.library.caltech.edu/records/et60w-z5434/files/1993-20.pdf" }, "pub_year": "1993", "author_list": "McGuire, P.; Bowen, T.; et el." }, { "id": "https://authors.library.caltech.edu/records/4zgjm-f1143", "eprint_id": 50643, "eprint_status": "archive", "datestamp": "2023-08-20 02:06:19", "lastmod": "2023-10-18 00:00:21", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Crary-D-J", "name": { "family": "Crary", "given": "D. J." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Geer-L-Y", "name": { "family": "Geer", "given": "L. Y." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Lawrence-D-J", "name": { "family": "Lawrence", "given": "David J." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "Detection Efficiency of the CRIS Scintillating Optical Fiber Hodoscope", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright University of Calgary. Provided by the NASA Astrophysics Data System.\n\nThis work was supported in part by NASA grants and in part by the McDonnell Center for the Space Sciences at Washington University.\n\nPublished - 1993-19.pdf
", "abstract": "Measurements of the detection efficiency of a Scintillating Optical Fiber Trajectory (SOFT) detector for 660 MeV/n Carbon, Boron, Beryllium and Lithium nuclei and for 300 MeV/n Fe nuclei are described. Detection efficiencies of 99.8%, 98.7%, 97.5%, and 93.8% for C, B, Be, and Li respectively were obtained for a single layer of fibers at an angle of incidence of 30\u00b0. These fibers had a black coating of extramural absorber (EMA) to optically decouple the fibers. Somewhat better detection efficiencies were obtained for optically coupled fibers (no EMA). The\ndetection efficiencies for iron nuclei were ~99.7%. We have used these results to estimate the event detection efficiencies of the fiber hodoscope which is planned for\nuse in the Cosmic Ray Isotope Spectrometer (CRIS) (Stone, et al., 1989) experiment on the Advanced Composition Explorer (ACE). We find that for the highest energy\nLithium nuclei which will stop in CRIS, the detection efficiency is about 89% for 6 plane events and about 99% for 5 plane events at 30\u00b0.", "date": "1993", "date_type": "published", "publisher": "World Scientific", "id_number": "CaltechAUTHORS:20141021-155634792", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141021-155634792", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" }, { "agency": "McDonnell Center for the Space Sciences, Washington University" } ] }, "other_numbering_system": { "items": [ { "id": "1993-19", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Leahy-D-A", "name": { "family": "Leahy", "given": "D. A." } }, { "id": "Hickws-R-B", "name": { "family": "Hickws", "given": "R. B." } }, { "id": "Venkatesan-D", "name": { "family": "Venkatesan", "given": "D." } } ] }, "primary_object": { "basename": "1993-19.pdf", "url": "https://authors.library.caltech.edu/records/4zgjm-f1143/files/1993-19.pdf" }, "pub_year": "1993", "author_list": "Binns, W. R.; Crary, D. J.; et el." }, { "id": "https://authors.library.caltech.edu/records/f6fj1-etc63", "eprint_id": 50259, "eprint_status": "archive", "datestamp": "2023-08-20 02:05:15", "lastmod": "2023-10-17 22:53:05", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Davis-A-J", "name": { "family": "Davis", "given": "A. J." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Westphall-M-S", "name": { "family": "Westphall", "given": "M.S." } }, { "id": "Kish-J-C", "name": { "family": "Kish", "given": "J. C." } }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "Mass Resolution of the Scintillating Optical Fiber Isotope Experiment (SOFIE)", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Calgary. Provided by the NASA Astrophysics Data System. \n\nThis work is supported in part by NASA grants and in part by the McDonnell Center for the Space Sciences at Washington University.\n\nPublished - 1993-16.pdf
", "abstract": "In December, 1990, we exposed the Scintillating Optical Fiber Isotope Experiment (SOFIE) to beams of silicon and iron nuclei at the LBL Bevalac accelerator. SOFIE is a\nCerenkov-dE/dx-range balloon experiment designed to study the isotopic composition of heavy galactic cosmic rays. Newly developed detectors using scintillating optical fiber\ntechnology provide high-resolution trajectory and range measurements in a large-area detector. An Analysis of the Bevalac data is presented, including performance of the\ntrajectory, Cerenkov and range detectors, and mass resolution at silicon and iron. We find the mass resolution to be ~0.26amu at silicon and ~ 0.4amu at iron, consistent with predictions based on the expected sources of error in the Cerenkov and range detectors.", "date": "1993", "date_type": "published", "publisher": "World Scientific", "id_number": "CaltechAUTHORS:20141008-094458161", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141008-094458161", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1993-16", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Leahy-D-A", "name": { "family": "Leahy", "given": "D. A." } }, { "id": "Hickws-R-B", "name": { "family": "Hickws", "given": "R. B." } }, { "id": "Venkatesan-D", "name": { "family": "Venkatesan", "given": "D." } } ] }, "primary_object": { "basename": "1993-16.pdf", "url": "https://authors.library.caltech.edu/records/f6fj1-etc63/files/1993-16.pdf" }, "pub_year": "1993", "author_list": "Davis, A. J.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/n3ep7-d2q36", "eprint_id": 50269, "eprint_status": "archive", "datestamp": "2023-08-20 02:05:26", "lastmod": "2023-10-17 22:53:30", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Hof-M", "name": { "family": "Hof", "given": "M." }, "orcid": "0000-0003-2884-3037" }, { "id": "Holder-S-F", "name": { "family": "Holder", "given": "S.F." } }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Menn-W", "name": { "family": "Menn", "given": "W." } }, { "id": "Ormes-J-F", "name": { "family": "Ormes", "given": "J. F." } }, { "id": "Reimer-O", "name": { "family": "Reimer", "given": "O." } }, { "id": "Simon-M-I", "name": { "family": "Simon", "given": "M." } }, { "id": "Stochaj-S-J", "name": { "family": "Stochaj", "given": "S. J." } }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } } ] }, "title": "The Isotope Matter-Antimatter Experiment Time-of-Flight System", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Calgary. Provided by the NASA Astrophysics Data System.\n\nThis research was supported in the United States by NASA under ATOP 353-87-02 (GSFC) and grants NAGW-1418 (NMSU/BBMF) and NAGW-1919 (Caltech) and in Germany by the DFG and the BMFT.\n\nPublished - 1993-18.pdf
", "abstract": "A state-of-the-art time-of-flight (TOF) system has been developed for measuring particle velocities in the Isotope Matter-Antimatter Experiment (IMAX), a balloon-borne\nmagnetic-rigidity spectrometer designed to measure the abundances and spectra of\nantiprotons and light isotopes in the cosmic radiation. Preliminary time-of-flight\nresolutions of 130 ps for protons and 105 ps for helium have been obtained. A\ndescription of the TOF system and an initial evaluation of its flight pertonnance are\npresented.", "date": "1993", "date_type": "published", "publisher": "World Scientific", "id_number": "CaltechAUTHORS:20141008-112142336", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141008-112142336", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGW-1919" }, { "agency": "NASA", "grant_number": "NAGW-1418" }, { "agency": "NASA", "grant_number": "ATOP 353-87-02" }, { "agency": "Deutsche Forschungsgemeinschaft (DFG), Germany" }, { "agency": "Bundesministerium f\u00fcr Forschung und Technologie (BMFT) Germany" } ] }, "other_numbering_system": { "items": [ { "id": "1993-18", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Leahy-D-A", "name": { "family": "Leahy", "given": "D. A." } }, { "id": "Hickws-R-B", "name": { "family": "Hickws", "given": "R. B." } }, { "id": "Venkatesan-D", "name": { "family": "Venkatesan", "given": "D." } } ] }, "primary_object": { "basename": "1993-18.pdf", "url": "https://authors.library.caltech.edu/records/n3ep7-d2q36/files/1993-18.pdf" }, "pub_year": "1993", "author_list": "Mitchell, J. W.; Barbier, L. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/0r963-12871", "eprint_id": 50249, "eprint_status": "archive", "datestamp": "2023-08-20 02:04:46", "lastmod": "2023-10-17 22:52:40", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Golden-R-L", "name": { "family": "Golden", "given": "R. L." } }, { "id": "Hof-M", "name": { "family": "Hof", "given": "M." }, "orcid": "0000-0003-2884-3037" }, { "id": "Labrador-A-W", "name": { "family": "Labrador", "given": "A. W." }, "orcid": "0000-0001-9178-5349" }, { "id": "Menn-W", "name": { "family": "Menn", "given": "W." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Ormes-J-F", "name": { "family": "Ormes", "given": "J. F." } }, { "id": "Rasmussen-I-L", "name": { "family": "Rasmussen", "given": "I. L." } }, { "id": "Reimer-O", "name": { "family": "Reimer", "given": "O." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Simon-M", "name": { "family": "Simon", "given": "M." } }, { "id": "Stochaj-S-J", "name": { "family": "Stochaj", "given": "S. J." } }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "IMAX (Isotope Matter-Antimatter Experiment)", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Calgary. Provided by the NASA Astrophysics Data System.\n\nThe members of the IMAX collaboration offer our heartfelt thanks to the staff of the NMSU Particle Astrophysics Laboratory: Bob Hull, Barbara Kimball, and Roy Park,\nas well as to Don Righter and Steve Holder of GSFC, and to Glen Albritton of Caltech, for the many long hours and hard work spent preparing and flying the IMAX experiment. We also thank the National Scientific Balloon Facility flight crew, led by Robert Kubara, who were able to give us a successful flight under very trying conditions. This research was supported in the United States by NASA under RTOP 353-87-02 (GSFC) and grants NAGW-1919 (Caltech} and NAGW-1418 (NMSU/BBMF). It was supported in Germany by the DFG and the BMFT. The work of AWL was partially supported by the NASA Graduate Student Researchers Program.\n\nPublished - 1993-14.pdf
", "abstract": "The Isotope Matter-Antimatter Experiment (IMAX), a balloon-borne magnetic rigidity spectrometer designed to measure the cosmic ray abundances and spectra of\nantiprotons, hydrogen isotopes, and helium isotopes, was successfully flown from Lynn lake, Manitoba, Canada on July 16-17, 1992. Duration at float was 16 hours at an average altitude of 36 km. About 1.4x10^6 events were recorded during ascent and over 3.4x10^6 events were recorded at float. In this paper, an overall description of the instrument and a preliminary evaluation of its performance are presented.", "date": "1993", "date_type": "published", "publisher": "World Scientific", "id_number": "CaltechAUTHORS:20141007-161954252", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141007-161954252", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA RTOP", "grant_number": "353-87-02" }, { "agency": "NASA", "grant_number": "NAGW-1919" }, { "agency": "NASA", "grant_number": "NAGW-1418" }, { "agency": "Deutsche Forschungsgemeinschaft (DFG), Germany" }, { "agency": "Bundesministerium f\u00fcr Forschung und Technologie (BMF), Germany" } ] }, "other_numbering_system": { "items": [ { "id": "1993-14", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Leahy-D-A", "name": { "family": "Leahy", "given": "D. A." } }, { "id": "Hickws-R-B", "name": { "family": "Hickws", "given": "R. B." } }, { "id": "Venkatesan-D", "name": { "family": "Venkatesan", "given": "D." } } ] }, "primary_object": { "basename": "1993-14.pdf", "url": "https://authors.library.caltech.edu/records/0r963-12871/files/1993-14.pdf" }, "pub_year": "1993", "author_list": "Mitchell, J. W.; Barbier, L. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/3a2qb-nfa56", "eprint_id": 50267, "eprint_status": "archive", "datestamp": "2023-08-20 02:05:21", "lastmod": "2023-10-17 22:53:25", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } }, { "id": "Barbier-L-M", "name": { "family": "Barbier", "given": "L. M." } }, { "id": "Bremerich-M", "name": { "family": "Bremerich", "given": "M." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Hof-M", "name": { "family": "Hof", "given": "M." }, "orcid": "0000-0003-2884-3037" }, { "id": "Krombel-K-E", "name": { "family": "Krombel", "given": "K. E." } }, { "id": "Menn-W", "name": { "family": "Menn", "given": "W." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitchell-J-W", "name": { "family": "Mitchell", "given": "J. W." } }, { "id": "Ormes-J-F", "name": { "family": "Ormes", "given": "J. F." } }, { "id": "Rasmussen-I-L", "name": { "family": "Rasmussen", "given": "I. L." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Simon-M", "name": { "family": "Simon", "given": "M." } } ] }, "title": "ISOMAX: A Balloon-borne Instrument to Study Beryllium and Other Light Isotopes in the Cosmic Radiation", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright University of Calgary. Provided by the NASA ADS.\n\nThis work is supported by: NASA ATOP 353-87-02 at Goddard Space Flight Center; Deutsch Forschungs Gemeinschaft at University of Siegen; NASA Grant NAGW-1919 (in part) at Caltech. KEK is supported by a National Research Council\nSenior Research Associateship at Goddard Space Flight Center.\n\nPublished - 1993-17.pdf
", "abstract": "The Isotope Magnet Experiment (ISOMAX), a balloon-borne magnetic rigidity spectrometer designed to measure the light isotopes of the cosmic radiation, is currently under construction. A major goal of the experiment is accurate\nmeasurement of the abundance of the radioactive isotope ^(10)Be up to relativistic energies (~ 4 GeV/nucleon). ISOMAX will make use of state-of-the-art instrument technology based on evolutionary development of detectors previously\nconstructed by this collaboration. The ISOMAX detector complement will include high-resolution drift chambers for trajectory detennination, a time-of-flight system, and a Cherenkov detector utilizing silica aerogel radiators. For rare isotopes, a large exposure factor is required to obtain statistlcaJly significant results. ISOMAX is\nspecifically designed to take advantage of the emerging capability for long-duration balloon flights, with a two week dewar lifetime and low-power electronics. The first flight of ISOMAX is planned for 1995.", "date": "1993", "date_type": "published", "publisher": "World Scientific", "id_number": "CaltechAUTHORS:20141008-111324606", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141008-111324606", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGW-1919" }, { "agency": "NASA", "grant_number": "ROTP 353-87-02" }, { "agency": "National Research Council" } ] }, "other_numbering_system": { "items": [ { "id": "1993-17", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Leahy-D-A", "name": { "family": "Leahy", "given": "D. A." } }, { "id": "Hickws-R-B", "name": { "family": "Hickws", "given": "R. B." } }, { "id": "Venkatesan-D", "name": { "family": "Venkatesan", "given": "D." } } ] }, "primary_object": { "basename": "1993-17.pdf", "url": "https://authors.library.caltech.edu/records/3a2qb-nfa56/files/1993-17.pdf" }, "pub_year": "1993", "author_list": "Streitmatter, R. E.; Barbier, L. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/xx8y1-ttf14", "eprint_id": 45805, "eprint_status": "archive", "datestamp": "2023-08-20 02:03:56", "lastmod": "2023-10-26 18:28:09", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. R." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "A Small Instrument for Low Energy Particle Observations in the Heliosphere", "ispublished": "unpub", "full_text_status": "public", "note": "Submitted - 1993-29.pdf
", "abstract": "We describe a lightweight and low-power sensor to measure energetic ions from solar, galactic,\nand heliospheric sources. This sensor is based on the Low Energy Telescopes (LETs) carried by\nthe Voyager spacecraft as part of the Cosmic Ray Subsystem. The energy range of the particles detected\ncan be adjusted by altering the detector thicknesses, but the nominal Voyager LET responds\nto all nuclei from protons\u00b7 through nickel (Z = l to 28) over energy ranges of ~0.5 to 8 Me V for\nprotons and ~5 to 30 Me V /nucleon for iron.\nWe also discuss the characteristics of the electronics required to support the sensor. The analog\nelectronics would consist of custom VLSI circuits of low mass and low power. The digital electronics\nwould require an Actel gate array and a microprocessor. The detectors would require biases\nup to ~100 V. Assuming that low voltages woul4 be supplied from a common supply on the spacecraft\nthat services all instruments, the total weight and power of such a system is ~250 g and 400 mW.", "date": "1993", "date_type": "published", "publisher": "National Aeronautics and Space Division", "id_number": "CaltechAUTHORS:20140516-111434018", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140516-111434018", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1993-29", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Tsurutani-B-T", "name": { "family": "Tsurutani", "given": "B. T." } } ] }, "primary_object": { "basename": "1993-29.pdf", "url": "https://authors.library.caltech.edu/records/xx8y1-ttf14/files/1993-29.pdf" }, "pub_year": "1993", "author_list": "Cummings, J. R.; Cook, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/xzdn7-a5e93", "eprint_id": 45807, "eprint_status": "archive", "datestamp": "2023-08-20 02:04:01", "lastmod": "2023-10-26 18:28:11", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. R." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Kecman-B", "name": { "family": "Kecman", "given": "B." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Alami-D", "name": { "family": "Aalami", "given": "D." } }, { "id": "Kleinfelder-S-A", "name": { "family": "Kleinfelder", "given": "S.A." } }, { "id": "Marshall-J-H", "name": { "family": "Marshall", "given": "J.H." } } ] }, "title": "Custom Analog VLSI for the Advanced Composition Explorer (ACE)", "ispublished": "unpub", "full_text_status": "public", "note": "This work was supported by NASA under contract NAS5-31459 and\ngrant NAGW-1919.\n\nSubmitted - 1993-30.pdf
", "abstract": "Two custom analog VLSI chips are currently in development for scientific payloads\nof NASA's Advanced Composition Explorer. One chip will be fabricated in the radiation\nhard 1.2 um CMOS process of the United Technologies Microelectronics Center (UlMC),\nand will contain 16 complete discriminator/12 bit pulse-height-analysis chains for the\nreadout of heavy ion Si strip detectors. The second chip will be fabricated by Harris\nSemiconductor in their dielectrically isolated bipolar VHF process. This chip will contain\nthe active elements of a single precision pulse-height-analysis chain and several precision\ndiscriminator chains. The chips designed in this effort and the techniques employed are\nexpected to be applicable in science payloads of future missions, especially those which\nplace extraordinary premiums on weight, power, and/or performance.", "date": "1993", "date_type": "published", "publisher": "National Aeronautics and Space Division", "id_number": "CaltechAUTHORS:20140516-113451049", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140516-113451049", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-31459" }, { "agency": "NASA", "grant_number": "NAGW-1919" } ] }, "other_numbering_system": { "items": [ { "id": "1993-30", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Tsurutani-B-T", "name": { "family": "Tsurutani", "given": "B. T." } } ] }, "primary_object": { "basename": "1993-30.pdf", "url": "https://authors.library.caltech.edu/records/xzdn7-a5e93/files/1993-30.pdf" }, "pub_year": "1993", "author_list": "Cook, W. R.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/x7454-8b003", "eprint_id": 45666, "eprint_status": "archive", "datestamp": "2023-08-20 00:45:38", "lastmod": "2023-10-26 18:09:02", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Grunsfeld-J-M", "name": { "family": "Grunsfeld", "given": "J." } }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W." } }, { "id": "Heindl-W-A", "name": { "family": "Heindl", "given": "W." } }, { "id": "Palmer-D-M", "name": { "family": "Palmer", "given": "D. M." } }, { "id": "Prince-T-A", "name": { "family": "Prince", "given": "T." }, "orcid": "0000-0002-8850-3627" }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S." } } ] }, "title": "Imaging Hard X-Ray/Gamma-Ray Observations of the Galactic Center Region", "ispublished": "unpub", "full_text_status": "public", "note": "@1992 by Universal Academy Press, Inc. and Yamada Science Foundation.\n\nSubmitted - 1991-07.pdf
", "abstract": "Recent imaging hard X-ray fr-ray observations have highlighted the energetic activity\nnear the Galactic center. The Caltech Gamma-Ray Imaging Payload (GRIP) observed the\nGalactic center region in 1988 April and again in 1989 April, at energies from 30 keV to 10\nMeV. The source 1El740.7-2942 was shown by our measurements, from the 1988 observation,\nto be the dominant Galactic center source in the energy range 35-200 keV /1/. We present\npreliminary results on the spectrum of lEl740.7-2942 for the 1989 observation. The question\nof source variability is of particular interest since lEl 740.7-2942 has been observed to exhibit\nshort term time variability on time scales of days, with the appearance of a hard excess of\nemission above 200 keV /2/. Recent observations by GRANAT /3/ have shown that the source\nlEl 7 40. 7-2942 transitioned into an extended \"low\" state in early 1991.", "date": "1992", "date_type": "published", "publisher": "Yamada Science Foundation and Universal Academy Press", "id_number": "CaltechAUTHORS:20140512-093337068", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140512-093337068", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1991-07", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Tanaka-Y", "name": { "family": "Tanaka", "given": "Y." } }, { "id": "Koyama-K", "name": { "family": "Koyama", "given": "K." } } ] }, "primary_object": { "basename": "1991-07.pdf", "url": "https://authors.library.caltech.edu/records/x7454-8b003/files/1991-07.pdf" }, "pub_year": "1992", "author_list": "Grunsfeld, J.; Cook, W.; et el." }, { "id": "https://authors.library.caltech.edu/records/ap4t5-agk04", "eprint_id": 50236, "eprint_status": "archive", "datestamp": "2023-08-19 23:28:37", "lastmod": "2023-10-17 22:52:03", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Crary-D-J", "name": { "family": "Crary", "given": "D. J." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Lawrence-D-J", "name": { "family": "Lawrence", "given": "D. J." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "A Bevalac Calibration of a Scintillating Optical Fiber Hodoscope for Possible use on the Advanced Composition Explorer", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Dublin Institute for Advanced Studies. Provided by the NASA Astrophysics Data System.\n\nThis experiment would not have been possible without the important\ncontributions of P.F. Dowkontt and J.W. Epstein in the instrument development for this work.\nThis work was supported in part by NASA grants.\n\nPublished - 1991-19.pdf
", "abstract": "As part of instrument definition activities for the Advanced\nComposition Explorer (ACE) we are evaluating a hodoscope comprised of scintillating fibers for possible use in the Cosmic Ray Isotope Spectrometer (CRIS). The hodoscope would determine the trajectories of individual cosmic ray nuclei which stop in the silicon solid state telescopes in CRIS. We\nreport a preliminary analysis of data from a Dec., 1990 Bevalac calibration of a CRIS test model which consisted of a scintillating fiber hodosccpe, utilizing 200mm, square cross section scintillating fibers, and silicon detectors for dE/dx-Erot measurements. The positional resolution obtained in our preliminary data analysis is -60\u03bcm for angles from 0-30\u00b0. The detection efficiency for iron and silicon nuclei was determined to be >99% for beam angles of \u2265 20\u00b0.", "date": "1991", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20141007-134109460", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141007-134109460", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" } ] }, "other_numbering_system": { "items": [ { "id": "1991-19", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1991-19.pdf", "url": "https://authors.library.caltech.edu/records/ap4t5-agk04/files/1991-19.pdf" }, "pub_year": "1991", "author_list": "Binns, W. R.; Crary, D. J.; et el." }, { "id": "https://authors.library.caltech.edu/records/00zk9-74d35", "eprint_id": 48038, "eprint_status": "archive", "datestamp": "2023-08-19 23:27:37", "lastmod": "2023-10-26 21:29:42", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "The Physical Significance of 'Shifted' Gradients and the Location of the Solar Wind Termination Shock", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Dublin Institute for Advanced Studies. Provided by the NASA Astrophysics Data System. \n\nWe are grateful to T. Hoeksema for providing the neutral sheet tilt data. This work was supported in part by NASA under contract NAS7-918 and grant NAGW-1919.\n\nPublished - 1991-11.pdf
", "abstract": "We use observations of anomalous cosmic-ray (ACR) oxygen from the cosmic-ray experiments on the Voyager 2 (V2) and Pioneer IO (PIO) spacecraft during 1985-1988 to\ninvestigate the physical significance of the \"shifted\" radial gradient The \"shifted\" gradient is computed by comparing fluxes measured at different times at the two spacecraft to \"correct\" for the propagation delay of solar modulation. We use a simple model of particle propagation in which the flow is inwards along the wavy neutral sheet to suggest that for qA < 0 near solar minimum conditions the \"shifted\" gradient is a measure of the gradient\nnear the solar wind termination shock. This simple model leads to an estimate of the location of the termination shock at 55 (+9/-5) AU, suggesting that the shock could be encountered within this decade.", "date": "1991", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20140805-202852761", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140805-202852761", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGW-1919" }, { "agency": "NASA", "grant_number": "NAS7-918" } ] }, "other_numbering_system": { "items": [ { "id": "1991-11", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1991-11.pdf", "url": "https://authors.library.caltech.edu/records/00zk9-74d35/files/1991-11.pdf" }, "pub_year": "1991", "author_list": "Stone, E. C.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/1tzd0-far61", "eprint_id": 50009, "eprint_status": "archive", "datestamp": "2023-08-19 23:28:20", "lastmod": "2023-10-17 22:26:28", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Adams-J-H-Jr", "name": { "family": "Adams", "given": "J. H., Jr." } }, { "id": "Blake-J-B", "name": { "family": "Blake", "given": "J. B." } }, { "id": "Grigorov-N-L", "name": { "family": "Grigorov", "given": "N. L." } }, { "id": "Kondratyeva-M-A", "name": { "family": "Kondratyeva", "given": "M. A." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Panasyuk-M-I", "name": { "family": "Panasyuk", "given": "M. I." } }, { "id": "Schulz-M", "name": { "family": "Schulz", "given": "M." } }, { "id": "Tretyakova-Ch-A", "name": { "family": "Tretyakova", "given": "Ch. A." } }, { "id": "Tylka-A-J", "name": { "family": "Tylka", "given": "A. J." } } ] }, "title": "Observation of Energetic Trapped Oxygen Ions in the Inner Magnetosphere", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Dublin Institute for Advanced Studies. Provided by the NASA Astrophysics Data System.\n\nWe thank NASA and IKI for sponsoring this study. This work is supported in part by NASA contract W-17,358, NASA grant NAG5-727, and the Aerospace Research Program.\n\nPublished - 1991-16.pdf
", "abstract": "We report on a series of measurements of 5-30 Me V /nuc oxygen ions made with trackdetector stacks on Cosmos satellites. We find that the angular distributions during\nsolar energetic particle events are isotropic, while solar-quiet times show highly anisotropic distributions suggestive of a trapped particle component. Detailed Monte\nCarlo simulations confirm this interpretation and allow us to separate the trapped and cosmic ray contributions to the quiet-time fluxes. Our data appear fully consistent with\ntrapping of anomalous cosmic ray ions as the source of the trapped particles but inconsistent with radial diffusion from the outer radiation zone.", "date": "1991", "date_type": "published", "publisher": "Caltech Library", "id_number": "CaltechAUTHORS:20140924-145158774", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140924-145158774", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "W-17,358" }, { "agency": "NASA", "grant_number": "NAGS-727" }, { "agency": "Aerospace Sponsored Research Program" } ] }, "other_numbering_system": { "items": [ { "id": "1991-16", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1991-16.pdf", "url": "https://authors.library.caltech.edu/records/1tzd0-far61/files/1991-16.pdf" }, "pub_year": "1991", "author_list": "Adams, J. H., Jr.; Blake, J. B.; et el." }, { "id": "https://authors.library.caltech.edu/records/cqk68-cey30", "eprint_id": 50242, "eprint_status": "archive", "datestamp": "2023-08-19 23:28:46", "lastmod": "2023-10-17 22:52:19", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "McDonald-F-B", "name": { "family": "McDonald", "given": "F. B." } }, { "id": "Selesnick-R-S", "name": { "family": "Selesnick", "given": "R. S." } } ] }, "title": "Solar/Interplanetary Energetic Particles in the Outer Heliosphere", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Dublin Institute for Advanced Studies. Provided by the NASA Astrophysics Data System.\n\nPublished - 1991-22.pdf
", "abstract": "The intense solar activity that occurred in the 1988/89 solar maximum period\nof cycle 22 produced long-lived solar/interplanetary energetic particle events that were\nobserved out to 50 AU. This paper presents a phenomenological view of these events\nand their relation to energetic particle increases in the previous cycle.", "date": "1991", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20141007-143726366", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141007-143726366", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1991-22", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1991-22.pdf", "url": "https://authors.library.caltech.edu/records/cqk68-cey30/files/1991-22.pdf" }, "pub_year": "1991", "author_list": "McDonald, F. B. and Selesnick, R. S." }, { "id": "https://authors.library.caltech.edu/records/ptnp3-7b414", "eprint_id": 50006, "eprint_status": "archive", "datestamp": "2023-08-19 23:28:15", "lastmod": "2023-10-17 22:26:19", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Adams-J-H-Jr", "name": { "family": "Adams", "given": "J. H., Jr." } }, { "id": "Garcia-Munoz-N", "name": { "family": "Garcia-Munoz", "given": "M." } }, { "id": "Grigorov-N-L", "name": { "family": "Grigorov", "given": "N. L." } }, { "id": "Klecker-B", "name": { "family": "Klecker", "given": "B." } }, { "id": "Kondratyeva-M-A", "name": { "family": "Kondratyeva", "given": "M. A." } }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "McGuire-R-E", "name": { "family": "McGuire", "given": "R. E." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Panasyuk-M-I", "name": { "family": "Panasyuk", "given": "M. I." } }, { "id": "Tretyakova-Ch-A", "name": { "family": "Tretyakova", "given": "Ch. A." } }, { "id": "Tylka-A-J", "name": { "family": "Tylka", "given": "A. J." } }, { "id": "Zhuravlev-D-A", "name": { "family": "Zhuravlev", "given": "D. A." } } ] }, "title": "The Mean Charge State of Anomalous Cosmic Ray Oxygen", "ispublished": "unpub", "full_text_status": "public", "note": "Dublin Institute for Advanced Studies. Provided by the NASA Astrophysics Data System.\n\nWe thank NASA and IKI for sponsoring this study. We thank D.\nI. Kozlov for the Cosmos flights. This work is supported in part by NASA contracts NAG8-678, NAGS-706, W-17 ,358; NASA grants NAGS-728, NOR 05-002-160, NAGW-1990; NSF grant ATM90-20608; and BMFT-FRG contract RV 14-B8;74.\n\nPublished - 1991-15.pdf
", "abstract": "The ionic charge state of anomalous cosmic ray oxygen has been determined by comparing measurements obtained inside the magnetosphere on a series of Cosmos satellite flights with simultaneous observations outside the magnetosphere from IMP-8 and ICE. We find a mean charge state =0.9(+0.3/-0.2) for ~10 MeV/nuc anomalous oxygen, consistent with the model of Fisk, Kozlovsky, and Ramaty in which anomalous cosmic rays originate from the neutral component of the local interstellar medium (ISM). This same approach gives =+7 for solar energetic oxygen ions.", "date": "1991", "date_type": "published", "publisher": "Institute for Advanced Study", "id_number": "CaltechAUTHORS:20140924-143327852", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140924-143327852", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG8-678" }, { "agency": "NASA", "grant_number": "NAGS-706" }, { "agency": "NASA", "grant_number": "W-17,358" }, { "agency": "NASA", "grant_number": "NAGS-7" }, { "agency": "Bundesministerium f\u00fcr Forschung und Technologie (BMFT)", "grant_number": "RV 14-BB/74" } ] }, "other_numbering_system": { "items": [ { "id": "1991-15", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1991-15.pdf", "url": "https://authors.library.caltech.edu/records/ptnp3-7b414/files/1991-15.pdf" }, "pub_year": "1991", "author_list": "Adams, J. H., Jr.; Garcia-Munoz, M.; et el." }, { "id": "https://authors.library.caltech.edu/records/jsgbj-fha39", "eprint_id": 50239, "eprint_status": "archive", "datestamp": "2023-08-19 23:28:41", "lastmod": "2023-10-17 22:52:10", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Geer-L-Y", "name": { "family": "Geer", "given": "L. Y." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } } ] }, "title": "UHCR: A Cosmic Ray Mission to Study Nuclei in the Charge Range From 20 \u2264Z \u2264100", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Dublin Institute for Advanced Studies. Provided by the NASA Astrophysics Data System.\n\nThis work was supported in part by NASA grants.\n\nPublished - 1991-20.pdf
", "abstract": "A definitive study of the elemental abundances of nuclei over the charge range of 20 \u2264 Z \u2264 100 requires a satellite mission capable of obtaining high statistics and excellent charge resolution over the full charge range. Such a mission, utilizing an electronic instrument which is an evolution of the HEA0-3 Heavy Nuclei Experiment, is described here.", "date": "1991", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20141007-135031932", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141007-135031932", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1991-20", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1991-20.pdf", "url": "https://authors.library.caltech.edu/records/jsgbj-fha39/files/1991-20.pdf" }, "pub_year": "1991", "author_list": "Binns, W. R.; Garrard, T. L.; et el." }, { "id": "https://authors.library.caltech.edu/records/1rqq6-j2a97", "eprint_id": 50232, "eprint_status": "archive", "datestamp": "2023-08-19 23:28:24", "lastmod": "2023-10-17 22:51:54", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Nilsen-B-S", "name": { "family": "Nilsen", "given": "B. S." } } ] }, "title": "Fragmentation of UH Nuclei", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Dublin Institute for Advanced Studies. Provided by the NASA Astrophysics Data System.\n\nPublished - 1991-17.pdf
", "abstract": "We have measured the total charge changing cross sections as a function of energy for projectile _(36)Kr nuclei in a wide range of targets ranging from polyethylene to lead. These cross sections are energy dependent and the dependence increases as the target mass increases.", "date": "1991", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20141007-110101824", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141007-110101824", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1991-17", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1991-17.pdf", "url": "https://authors.library.caltech.edu/records/1rqq6-j2a97/files/1991-17.pdf" }, "pub_year": "1991", "author_list": "Waddington, C. J.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/dy7km-tp355", "eprint_id": 49993, "eprint_status": "archive", "datestamp": "2023-08-19 23:28:06", "lastmod": "2023-10-17 22:25:43", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Heavy Ions in the October 1989 Solar Flares Observed on the Galileo Spacecraft", "ispublished": "unpub", "full_text_status": "public", "note": "Dublin Institute for Advanced Studies. Provided by the NASA Astrophysics Data System.\n\nPublished - 1991-13.pdf
", "abstract": "Composition measurements were made of the energetic\nparticles produced in the series of large flares which began on 19 October 1989, using the Galileo Heavy Ion Counter which is sensitive to nuclei ranging from carbon (Z=6) to nickel (Z=28) over an energy range from about 5 MeV/nucleon to >70 MeV/nucleon. The observations are unique in that clean, statistically well-measured abundances are available for heavy ions for an unusually large flare. For elements with low First Ionization Potential (FIP), these results show the same correlation of relative abundances\nwith the ion charge to mass ratio as the earlier Voyager observations of solar energetic particles 1 . After correction for selection on the basis of this charge to mass ratio, the abundances of all the elements measured\nshow the expected step-function correlation with FIP, when compared to the spectroscopic photspheric abundances.", "date": "1991", "date_type": "published", "publisher": "Institute for Advanced Studies", "id_number": "CaltechAUTHORS:20140924-110740661", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140924-110740661", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGW-1919" }, { "agency": "NASA", "grant_number": "NAS7-918" } ] }, "other_numbering_system": { "items": [ { "id": "1991-13", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1991-13.pdf", "url": "https://authors.library.caltech.edu/records/dy7km-tp355/files/1991-13.pdf" }, "pub_year": "1991", "author_list": "Garrard, T. L. and Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/s9pz1-1a284", "eprint_id": 50003, "eprint_status": "archive", "datestamp": "2023-08-19 23:28:10", "lastmod": "2023-10-17 22:26:12", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Adams-J-H-Jr", "name": { "family": "Adams", "given": "J. H., Jr." } }, { "id": "Grigorov-N-L", "name": { "family": "Grigorov", "given": "N. L." } }, { "id": "Kondratyeva-M-A", "name": { "family": "Kondratyeva", "given": "M. A." } }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "McGuire-R-E", "name": { "family": "McGuire", "given": "R.E." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Panasyuk-M-I", "name": { "family": "Panasyuk", "given": "M. I." } }, { "id": "Tretyakova-C-A", "name": { "family": "Tretyakova", "given": "C. A." } }, { "id": "Tylka-A-J", "name": { "family": "Tylka", "given": "A. J." } }, { "id": "Zhuravlev-D-A", "name": { "family": "Zhuravlev", "given": "D. A." } } ] }, "title": "The Mean Charge State of Solar Energetic Oxygen Ions", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright Dublin Institute for Advanced Studies. Provided by the NASA Astrophysics Data System.\n\nWe thank NASA and IKI for sponsoring this study. We thank D.\nI. Kozlov for the Cosmos flights. This work is supported in part by NASA contracts NAG8-678, NAG5-706, W-17,358; NASA grants NAG5-728, NGR 05-002-160, NAG@-1990; and NSF grant ATM-90-23414.\n\nPublished - 1991-14.pdf
", "abstract": "We report an attempt to measure the ionic charge state of solar energetic oxygen ions at energies of 8-20 MeV /nuc. This study is part of a cooperative project of the space\nagencies of the USA and the USSR, in which we compare data from cosmic ray experiments on IMP-8 and ISEE-3 outside the magnetosphere with data from a series of experiments on Cosmos satellites in low earth orbit. From these comparisons, we determine the orbit-averaged geomagnetic transmission of these particles, which can be related to the average ionic charge state. We present preliminary results on the three solar energetic particle events analyzed to date.", "date": "1991", "date_type": "published", "publisher": "Institute for Advanced Study", "id_number": "CaltechAUTHORS:20140924-135847481", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140924-135847481", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG8-678" }, { "agency": "NASA", "grant_number": "NAG5-706" }, { "agency": "NASA", "grant_number": "W-17358" }, { "agency": "NASA", "grant_number": "NAG5-728" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NAGW-1990" }, { "agency": "NSF", "grant_number": "ATM-90-23414" } ] }, "other_numbering_system": { "items": [ { "id": "1991-14", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1991-14.pdf", "url": "https://authors.library.caltech.edu/records/s9pz1-1a284/files/1991-14.pdf" }, "pub_year": "1991", "author_list": "Adams, J. H., Jr.; Grigorov, N. L.; et el." }, { "id": "https://authors.library.caltech.edu/records/2t45p-h2q62", "eprint_id": 49979, "eprint_status": "archive", "datestamp": "2023-08-19 23:27:57", "lastmod": "2023-10-17 22:25:06", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "The Physical Significance of 'Shifted' Gradients and the Location of the Solar Wind Termination Shock", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Dublin Institute for Advanced Studies. Provided by the NASA Astrophysics Data System.\n\nUnder the auspices of the International Union of Pure and Applied Physics (IUPAP).\n\nWe are grateful to T. Hoeksema for providing the neutral sheet tilt data. This work was supported in part by NASA under contract NAS7-918 and grant NAGW-1919.\n\nPublished - 1991-11.pdf
", "abstract": "We use observations of anomalous cosmic-ray (ACR) oxygen from the cosmic-ray experiments on the Voyager 2 (V2) and Pioneer IO (PIO) spacecraft during 1985-1988 to investigate the physical significance of the \"shifted\" radial gradient The \"shifted\" gradient is computed by comparing fluxes measured at different times at the two spacecraft to \"correct\" for the propagation delay of solar modulation. We use a simple model of particle propagation in which the flow is inwards along the wavy neutral sheet to suggest that for qA < 0 near solar minimum conditions the \"shifted\" gradient is a measure of the gradient\nnear the solar wind termination shock. This simple model leads to an estimate of the location of the termination shock at 55(+9/-5) AU, suggesting that the shock could be encountered within this decade.", "date": "1991", "date_type": "published", "publisher": "Institute for Advanced Studies", "id_number": "CaltechAUTHORS:20140924-091647751", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140924-091647751", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGW-1919" }, { "agency": "NASA", "grant_number": "NAS7-918" } ] }, "other_numbering_system": { "items": [ { "id": "1991-11", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1991-11.pdf", "url": "https://authors.library.caltech.edu/records/2t45p-h2q62/files/1991-11.pdf" }, "pub_year": "1991", "author_list": "Stone, E. C.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/hf4wj-bvz49", "eprint_id": 50234, "eprint_status": "archive", "datestamp": "2023-08-19 23:28:28", "lastmod": "2023-10-17 22:51:58", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Adams-J-H-Jr", "name": { "family": "Adams", "given": "J. H., Jr." } }, { "id": "Badhwar-G-D", "name": { "family": "Badhwar", "given": "G.D." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Mitra-B", "name": { "family": "Mitra", "given": "B." } }, { "id": "O'Neill-P-M", "name": { "family": "O'Neill", "given": "P.M." } }, { "id": "Ormes-J-F", "name": { "family": "Ormes", "given": "J. F." } }, { "id": "Stemwedel-P-W", "name": { "family": "Stemwedel", "given": "P.W." } }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } } ] }, "title": "The Absolute Spectra of Galactic Cosmic Rays at Solar Minimum and Their Implications for Manned Spaceflight", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Dublin Institute for Advanced Studies. Provided by the NASA Astrophysics Data System.\n\nThis work was supported by NASA Contract T-1218S.\n\nPublished - 1991-18.pdf
", "abstract": "The radiation dose from galactic cosmic rays during a proposed mission to Mars is near the annual dose limit for the crew. Since the absolute spectra of galactic cosmic rays\ncritically influences mission planning and spacecraft design, these spectra must be determined as accurately as possible. We have fit published measurements with solutions of the spherically symmetric diffusion equation to make accurate representations of the spectra. We report preliminary determinations on the absolute\ndifferential energy spectra at 1 AU and discuss the implications for the proposed\nmissions to Mars.", "date": "1991", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20141007-130749823", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141007-130749823", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "T-1218S" } ] }, "other_numbering_system": { "items": [ { "id": "1991-18", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1991-18.pdf", "url": "https://authors.library.caltech.edu/records/hf4wj-bvz49/files/1991-18.pdf" }, "pub_year": "1991", "author_list": "Adams, J. H., Jr.; Badhwar, G.D.; et el." }, { "id": "https://authors.library.caltech.edu/records/1wvn9-pyt31", "eprint_id": 50247, "eprint_status": "archive", "datestamp": "2023-08-19 23:28:50", "lastmod": "2023-10-17 22:52:35", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Holzer-T-E", "name": { "family": "Holzer", "given": "T.E." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Neugebauer-M", "name": { "family": "Neugebauer", "given": "M." } } ] }, "title": "The Interstellar Probe: A Frontier Mission to the Heliospheric Boundary and Interstellar Space", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Dublin Institute for Advanced Studies. Provided by the NASA Astrophysics Data System.\n\nWe are grateful to NASA's Space Physics Division for supporting this study and to the participants in the Interstellar Probe Workshop for their enthusiastic hard work and valuable contributions.\n\nPublished - 1991-23.pdf
", "abstract": "The Interstellar Probe mission would be designed to cross the\nsolar wind termination shock and heliopause and make a significant penetration\ninto interstellar space, thereby providing the first comprehensive in\nsitu studies of the plasma, energetic particles, cosmic rays, fields, gas, and\ndust in the nearby Galaxy. We report on the scientific rationale and requirements\nfor this mission, including its unique opportunities for cosmic ray studies.", "date": "1991", "date_type": "published", "publisher": "Institute for Advanced Studies", "id_number": "CaltechAUTHORS:20141007-160856926", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141007-160856926", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1991-23", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1991-23.pdf", "url": "https://authors.library.caltech.edu/records/1wvn9-pyt31/files/1991-23.pdf" }, "pub_year": "1991", "author_list": "Holzer, T.E.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/4vb45-3yb48", "eprint_id": 49983, "eprint_status": "archive", "datestamp": "2023-08-19 23:28:01", "lastmod": "2023-10-17 22:25:19", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "The Isotopic Composition of Anomalous Cosmic Ray Neon", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Dublin Institute for Advanced Studies. Provided by the NASA Astrophysics Data System.\n\nThis work was supported in part by NASA under contract NAS7-918 and grant NAGW-1919.\n\nPublished - 1991-12.pdf
", "abstract": "We have used observations of neon in the energy interval 14.6 - 35.6 MeV /nuc from the cosmic-ray experiment on the Voyager 2 (V2) spacecraft during 1986-1988 to\nderive the ^(22)Ne/^(20)Ne ratio for the source material of the anomalous cosmic rays (ACRs). Because of the relatively small contamination from galactic cosmic-ray (CCR) neon during the time period selected, we have significantly improved the precision with which this ratio is known. We find that the derived ACR source ratio, ^(22)Ne/^(20)Ne = 0.077 +0.068/-0.043, is consistent with the composition of the solar wind (0.073) and meteoritic neon-A (0.12), but inconsistent with the galactic cosmic ray source (0.43). This finding places new limits on the possible source material of the anomalous component. If the anomalous component does derive from the inward flowing interstellar neutral gas, then the composition of the source of galactic cosmic rays differs from that of the very local interstellar medium (VLISM).", "date": "1991", "date_type": "published", "publisher": "Institute for Advanced Studies", "id_number": "CaltechAUTHORS:20140924-095030514", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140924-095030514", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAGW-1919" }, { "agency": "NASA", "grant_number": "NAS7-918" } ] }, "other_numbering_system": { "items": [ { "id": "1991-12", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1991-12.pdf", "url": "https://authors.library.caltech.edu/records/4vb45-3yb48/files/1991-12.pdf" }, "pub_year": "1991", "author_list": "Cummings, A. C.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/khmgq-ttx14", "eprint_id": 50235, "eprint_status": "archive", "datestamp": "2023-08-19 23:28:33", "lastmod": "2023-10-17 22:52:01", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Nilsen-B-S", "name": { "family": "Nilsen", "given": "B. S." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } } ] }, "title": "Response of Scintillators to UH Nuclei", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Dublin Institute for Advanced Studies. Provided by the NASA Astrophysics Data System.\n\nThis work was supported in part by NASA grants.\n\nPublished - 1991-21.pdf
", "abstract": "In order to evaluate the performance of plastic scintillators for the detection\nof Ultra-Heavy cosmic ray nuclei, as envisaged in paper OG 10.1.14P,\nwe have conducted experiments at the LBL Bevalac in which we exposed\nNE-114 and acrylic scintillators to beams of 47Ag ions and its interaction\nfragments. As a result we have calibrated these scintillators over the charge\nrange 31 \u2264 Z \u2264 47. Our results show that a combination of Cherenkov and\nscintillator detectors can resolve individual charges over this charge range.\nThe resolution obtained in scintillator was 0.24 and 0.28 cu for NE-114 and\nacrylic scintillator respectively. In addition the light emission is shown to be\nlinear to a good approximation with dE/dx over this charge range.", "date": "1991", "date_type": "published", "publisher": "International Union of Pure and Applied Physics", "id_number": "CaltechAUTHORS:20141007-134028845", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141007-134028845", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" } ] }, "other_numbering_system": { "items": [ { "id": "1991-21", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1991-21.pdf", "url": "https://authors.library.caltech.edu/records/khmgq-ttx14/files/1991-21.pdf" }, "pub_year": "1991", "author_list": "Binns, W. R.; Cummings, J. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/8xeb0-45g81", "eprint_id": 118047, "eprint_status": "archive", "datestamp": "2023-08-19 23:00:46", "lastmod": "2024-01-15 21:28:26", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Grindlay-Jonathan-E", "name": { "family": "Grindlay", "given": "J." }, "orcid": "0000-0002-1323-5314" }, { "id": "Prince-T-A", "name": { "family": "Prince", "given": "T." }, "orcid": "0000-0002-8850-3627" }, { "id": "Weisskopf-Martin-C", "name": { "family": "Weisskopf", "given": "M." } }, { "id": "Skinner-Gerald-K", "name": { "family": "Skinner", "given": "G. K." } } ] }, "title": "The EXOSS mission for hard X-ray astronomy", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1990 AIP Publishing.\n\nPublished - 1.39661.pdf
", "abstract": "We describe the basis for an Energetic X\u2010ray Observatory on Space Station (EXOSS), which has been accepted by NASA as a Concept Study for the Space Station Attached Payloads program. With its high sensitivity, EXOSS will complement the capabilities of AXAF and GRO by covering the important 10\u2013300 keV energy range (with extended response from \u223c3 keV\u20131 MeV). The principal scientific objectives of EXOSS will be to study in detail active galactic nuclei (AGN) and quasars (some 10,000) should be detectable) as well as compact galactic sources (accreting white dwarfs, neutron stars and black holes) to probe both nonthermal and high temperature thermal phenomena and the fundamental nature of these objects. High energy imaging studies of diffuse sources, both supernova remnants and galaxy clusters, as well as surveys will also be conducted. As such, EXOSS will achieve many of the objectives of the major Hard X\u2010ray Imaging Facility (HXIF) for astrophysics proposed in the \"Space Science in the 21st Century\" report of the Space Science Board.", "date": "1990-08-10", "date_type": "published", "publisher": "American Institute of Physics", "id_number": "CaltechAUTHORS:20221128-304854000.1", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20221128-304854000.1", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1990-11", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.1063/1.39661", "primary_object": { "basename": "1.39661.pdf", "url": "https://authors.library.caltech.edu/records/8xeb0-45g81/files/1.39661.pdf" }, "pub_year": "1990", "author_list": "Grindlay, J.; Prince, T.; et el." }, { "id": "https://authors.library.caltech.edu/records/rj9bz-r1534", "eprint_id": 48036, "eprint_status": "archive", "datestamp": "2023-08-19 22:52:41", "lastmod": "2024-01-13 16:07:30", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cook-Walter-R-III", "name": { "family": "Cook", "given": "W. R." } }, { "id": "Prince-T-A", "name": { "family": "Prince", "given": "T. A." }, "orcid": "0000-0002-8850-3627" }, { "id": "Grindlay-Jonathan-E", "name": { "family": "Grindlay", "given": "J. E." } }, { "id": "Weisskopf-Martin-C", "name": { "family": "Weisskopf", "given": "M. C." } }, { "id": "Ramsey-Brian-D", "name": { "family": "Ramsey", "given": "B. D." } }, { "id": "Skinner-Gerald-K", "name": { "family": "Skinner", "given": "G. K." } } ] }, "title": "EXOSS: A Hard X-ray and Soft Gamma-ray Astronomy Mission", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1990 Society of Photo-Optical Instrumentation Engineers (SPIE).\n\nPublished - 454.pdf
", "abstract": "The Energetic X-ray Observatory on Space Station (EXOSS) is a mission concept for high-sensitivity coded-aperture sky surveys and studies of the spectral and temporal behavior of astrophysical sources from approximately 3 keV to 1 MeV. The scientific motivation for the mission and the instrument requirements, including the need for high angular resolution to resolve and identify numerous detectable sources, are summarized. Two baseline telescopes are described: one employing a 1.4-sq-m array of Xe gas imaging proportional counters to cover the 3 to 100 keV range with 1 arcmin resolution; the second using a 2.8-sq-m array of NaI/CsI imaging phoswich detectors to span the 20 keV to MeV range with 12 arcmin resolution.", "date": "1990-07", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers", "id_number": "CaltechAUTHORS:20140805-201043094.739", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140805-201043094.739", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1990-13", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Siegmund-Oswald-H-W", "name": { "family": "Siegmund", "given": "Oswald H. W." } }, { "id": "Hudson-Hugh-S", "name": { "family": "Hudson", "given": "Hugh S." } } ] }, "doi": "10.1117/12.23278", "primary_object": { "basename": "454.pdf", "url": "https://authors.library.caltech.edu/records/rj9bz-r1534/files/454.pdf" }, "pub_year": "1990", "author_list": "Cook, W. R.; Prince, T. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/cxg31-m5983", "eprint_id": 47246, "eprint_status": "archive", "datestamp": "2023-08-19 22:35:29", "lastmod": "2024-01-13 16:06:51", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Cosmic ray studies with an interstellar probe", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1990 American Institute of Physics. \n\nThis work was supported in part by NASA under grant NGR \n05-002-160. We thank M. D. Looper for producing Figure 2 and R. Ramaty for \nsuggestions.\n\nPublished - 1989-27.pdf
", "abstract": "Among the NASA mission concepts that have been suggested for the 21st century is an Interstellar Probe that might be accelerated to a velocity of \u223c10 to 20 AU/yr, allowing it to leave the heliosphere, ultimately reaching a radial distance of \u223c500 to 1000 AU in \u223c50 years. We discuss briefly previous studies of such a mission, and its potential significance for cosmic ray studies, both within the heliosphere, and beyond, in interstellar space.", "date": "1990-03-20", "date_type": "published", "publisher": "American Institute of Physics", "id_number": "CaltechAUTHORS:20140715-162129951", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140715-162129951", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1989-27", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Jones-W-V", "name": { "family": "Jones", "given": "W. Vernon" } }, { "id": "Kerr-K-J", "name": { "family": "Kerr", "given": "F. J." } }, { "id": "Ormes-J-F", "name": { "family": "Ormes", "given": "J. F." } } ] }, "doi": "10.1063/1.39161", "primary_object": { "basename": "1989-27.pdf", "url": "https://authors.library.caltech.edu/records/cxg31-m5983/files/1989-27.pdf" }, "pub_year": "1990", "author_list": "Mewaldt, R. A. and Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/tvvy8-p1109", "eprint_id": 45482, "eprint_status": "archive", "datestamp": "2023-08-19 22:35:05", "lastmod": "2024-01-13 15:27:20", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Ormes-J-F", "name": { "family": "Ormes", "given": "J. F." } }, { "id": "Streitmatter-R-E", "name": { "family": "Streitmatter", "given": "R. E." } }, { "id": "Rasmussen-I-L", "name": { "family": "Rasmussen", "given": "I. L." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "Large Isotope Spectrometer for Astromag", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1990 American Institute of Physics. \n\nPublished online 20 March 1990.\n\nPublished - 1989-33.pdf
", "abstract": "The Large Isotope Spectrometer for Astromag (LISA) is an experiment designed to measure the isotopic composition and energy spectra of cosmic rays for elements extending from beryllum through zinc. The overall objectives of this investigation are to study the origin and evolution of galactic matter; the acceleration, transport, and time scales of comsic rays in the galaxy; and search for heavy antinuclei in the cosmic radiation.\nTo achieve these objectives the LISA experiment will make the first identifications of individual heavy cosmic ray isotopes in the energy range from about 2.5 to 4 GeV/n where relativistic time dilation effects enhance the abundances of radioactive clocks and where the effects of solar modulation and cross\u2010section variations are minimized. It will extend high resolution measurements of individual element abundances and their energy spectra to energies of nearly 1 TeV/n, and has the potential for discovering heavy anti\u2010nuclei which could not have been formed except in extra\u2010galactic sources.", "date": "1990-03-20", "date_type": "published", "publisher": "American Institute of Physics", "id_number": "CaltechAUTHORS:20140505-092241472", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140505-092241472", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1989-33", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.1063/1.39145", "primary_object": { "basename": "1989-33.pdf", "url": "https://authors.library.caltech.edu/records/tvvy8-p1109/files/1989-33.pdf" }, "pub_year": "1990", "author_list": "Binns, W. R.; Klarmann, J.; et el." }, { "id": "https://authors.library.caltech.edu/records/pn05f-w6x86", "eprint_id": 45481, "eprint_status": "archive", "datestamp": "2023-08-19 22:35:00", "lastmod": "2024-01-13 15:27:18", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Ahlen-S-P", "name": { "family": "Ahlen", "given": "S. P." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Cherry-M-L", "name": { "family": "Cherry", "given": "M. L." } }, { "id": "Gaisser-T-K", "name": { "family": "Gaisser", "given": "T. K." } }, { "id": "Jones-W-V", "name": { "family": "Jones", "given": "W. V." } }, { "id": "Ling-J-C", "name": { "family": "Ling", "given": "J. C." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Muller-D", "name": { "family": "Muller", "given": "D." } }, { "id": "Ormes-J-F", "name": { "family": "Ormes", "given": "J. F." } }, { "id": "Ramaty-R", "name": { "family": "Ramaty", "given": "R." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "The NASA cosmic ray program for the 1990's and beyond Interim report of the NASA Cosmic Ray Program Working Group", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1990 American Institute of Physics. \n\nPublished online 20 March 1990. \n\nWe thank G. M. Mason for his contributions to this report.\n\nPublished - 1.39139.pdf
Submitted - 1989-32.pdf
", "abstract": "The interim report of the 1989 NASA Cosmic Ray Program Working Group is presented. The report summarizes the cosmic ray program for the 1990's, including the recently approved ACE, Astromag, HNC, POEMS, and SAMPEX missions, as well as other key elements of the program. New science themes and candidate missions are identified for the first part of the 21st Century, including objectives that might be addressed as part of the Human Exploration Initiative. Among the suggested new thrusts for the 21st century are: an Interstellar Probe into the nearby interstellar medium; a Lunar\u2010Based Calorimeter to measure the cosmic ray composition near \u223c10^(16) eV; high precision element and isotope spectroscopy of ultraheavy (Z\u226530) elements; and new, more sensitive, studies of impulsive solar flare events.", "date": "1990-03-20", "date_type": "published", "publisher": "American Institute of Physics", "id_number": "CaltechAUTHORS:20140505-092122572", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140505-092122572", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1989-32", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.1063/1.39139", "primary_object": { "basename": "1.39139.pdf", "url": "https://authors.library.caltech.edu/records/pn05f-w6x86/files/1.39139.pdf" }, "related_objects": [ { "basename": "1989-32.pdf", "url": "https://authors.library.caltech.edu/records/pn05f-w6x86/files/1989-32.pdf" } ], "pub_year": "1990", "author_list": "Ahlen, S. P.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/2r6xp-myb97", "eprint_id": 47242, "eprint_status": "archive", "datestamp": "2023-08-19 22:35:25", "lastmod": "2024-01-13 16:06:47", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Burlaga-L-F", "name": { "family": "Burlaga", "given": "L. F." }, "orcid": "0000-0002-5569-1553" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Feldman-W-C", "name": { "family": "Feldman", "given": "W. C." } }, { "id": "Frain-W-E", "name": { "family": "Frain", "given": "W. E." } }, { "id": "Geissman-J-W", "name": { "family": "Geissman", "given": "J." } }, { "id": "Gloeckler-G", "name": { "family": "Gloeckler", "given": "G." } }, { "id": "Gold-R-E", "name": { "family": "Gold", "given": "R. E." } }, { "id": "Hovestadt-D", "name": { "family": "Hovestadt", "given": "D." } }, { "id": "Krimigis-S-M", "name": { "family": "Krimigis", "given": "S. M." }, "orcid": "0000-0003-2781-2386" }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "McComas-D-J", "name": { "family": "McComas", "given": "D." }, "orcid": "0000-0001-6160-1158" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Simpson-J-A", "name": { "family": "Simpson", "given": "J. A." } }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "The Advanced Composition Explorer", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1990 American Institute of Physics. \n\nPublished online 20 March 1990. \n\nThe ACE Phase-A study could not have been completed without the \ncontributions of many individuals, including exceptional efforts from many \nscientists, engineers, and staff at the various Investigator Institutions. D. Mehoke \nof JHU/APL was the systems engineer for the spacecraft study team. He and the \nother members of the spacecraft study team at JHU/APL deserve thanks for their \nresponse to the tasks given them. We are grateful to R. Farquhar of GSFC and D. \nDunham of Computer Sciences Corp. for providing trajectory calculations for ACE. \nThe ACE Technical Officers at GFSC were E. Mercanti and T. Karras and their \naid in providing liaison with the GSFC Project Office was appreciated. We are \nthankful for the support of S. Nylund of JHU/APL who was largely responsible for \nformulating the ACE Data Plan. We also appreciate the assistance of G. Floyd of \nGSFC for helping to formulate the ground data capture and mission operations \nand control systems. Our efforts in defining the telecom parameters for ACE \nbenefited from discussions with W. L. Martin of JPL. Finally, the ACE Phase-A \nreport achieved its final form due to the considerable effort and expertise of L. \nSartain, C. Silva, and K. Gary, all of Caltech. The ACE Phase-A Study was \nsupported by NASA Contract NAS5-30340.\n\nPublished - 1989-26.pdf
", "abstract": "The Advanced Composition Explorer (ACE) was recently selected as one of two new Explorer\u2010class missions to be developed for launch during the mid\u20101990's ACE will observe particles of solar, interplanetary, interstellar, and galactic origins, spanning the energy range from that of the solar wind (\u223c1 keV/nucleon) to galactic cosmic ray energies (several hundred MeV/nucleon). Definitive studies will be made of the abundance of nearly all isotopes from H to Zn (1\u2264Z\u226430), with exploratory isotope studies extending to Zr(Z=40). To accomplish this, the ACE payload includes six high\u2010resolution spectrometers, each designed to provide the optimum charge, mass, or charge\u2010state resolution in its particular energy range, and each having a geometry factor optimized for the expected flux levels, so as to provide a collecting power a factor of 10 to 1000 times greater than previous or planned experiments. The payload also includes several instruments of standard design that will monitor solar wind and magnetic field conditions and energetic H, He, and electron fluxes. We summarize here the scientific objectives, instrumentation, spacecraft, and mission approach that were defined for ACE during the Phase\u2010A study period.", "date": "1990-03-20", "date_type": "published", "publisher": "American Institute of Physics", "id_number": "CaltechAUTHORS:20140715-154126254", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140715-154126254", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-30340" } ] }, "other_numbering_system": { "items": [ { "id": "1989-26", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Jones-W-V", "name": { "family": "Jones", "given": "W. V." } }, { "id": "Kerr-F-J", "name": { "family": "Kerr", "given": "Frank J." } }, { "id": "Ormes-J-F", "name": { "family": "Ormes", "given": "J. F." } } ] }, "doi": "10.1063/1.39173", "primary_object": { "basename": "1989-26.pdf", "url": "https://authors.library.caltech.edu/records/2r6xp-myb97/files/1989-26.pdf" }, "pub_year": "1990", "author_list": "Stone, E. C.; Burlaga, L. F.; et el." }, { "id": "https://authors.library.caltech.edu/records/jm78j-fgs03", "eprint_id": 45483, "eprint_status": "archive", "datestamp": "2023-08-19 22:35:10", "lastmod": "2024-01-13 16:04:49", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Baker-D-N", "name": { "family": "Baker", "given": "D. N." } }, { "id": "Blake-J-B", "name": { "family": "Blake", "given": "J. B." } }, { "id": "Callis-L-A", "name": { "family": "Callis", "given": "L. A." } }, { "id": "Hamilton-D-C", "name": { "family": "Hamilton", "given": "D. C." } }, { "id": "Hovestadt-D", "name": { "family": "Hovestadt", "given": "D." } }, { "id": "Klecker-B", "name": { "family": "Klecker", "given": "B." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Scholer-M", "name": { "family": "Scholer", "given": "M." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "SAMPEX Mission Overview", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1990 American Institute of Physics. \n\nPublished online 20 March 1990. \n\nThis work is supported in part by NASA contract \nNAS5-30704 and by the German Government.\n\nPublished - 1989-34.pdf
", "abstract": "The Solar, Anomalous, and Magnetospheric Particle Explorer, SAMPEX, will carry out energetic particle studies of outstanding scientific questions in the fields of space plasma physics, solar physics, magnetospheric and middle atmospheric physics, and cosmic ray physics. SAMPEX will measure the electron and ion composition of energetic particle populations from \u223c0.4 MeV/nucleon to hundreds of MeV/nucleon from a zenith\u2010pointing small satellite in near\u2010polar orbit, using a coordinate set of detectors with excellent charge and mass resolution, and with higher sensitivity than previously flown instruments. While over the magnetic poles, the instruments will study the composition of anomalous cosmic rays, solar energetic particles, and galactic cosmic rays. At lower magnetic latitudes, geomagnetic cutoff effects will allow determination of the ionization state of these particles at energies much higher than can be studied from interplanetary spacecraft. At subauroral latitudes, SAMPEX will also observe precipitating relativistic magnetospheric electrons, which undergo important interactions within the middle atmosphere.", "date": "1990-03-20", "date_type": "published", "publisher": "American Institute of Physics", "id_number": "CaltechAUTHORS:20140505-092436949", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140505-092436949", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-30704" }, { "agency": "Bundesministerium f\u00fcr Forschung und Technologie (BMFT)" } ] }, "other_numbering_system": { "items": [ { "id": "1989-34", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.1063/1.39140", "primary_object": { "basename": "1989-34.pdf", "url": "https://authors.library.caltech.edu/records/jm78j-fgs03/files/1989-34.pdf" }, "pub_year": "1990", "author_list": "Mason, G. M.; Baker, D. N.; et el." }, { "id": "https://authors.library.caltech.edu/records/k7ebs-xvx02", "eprint_id": 47238, "eprint_status": "archive", "datestamp": "2023-08-19 22:35:20", "lastmod": "2024-01-13 16:06:45", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } } ] }, "title": "The Isotopic Composition of Cosmic Ray Nuclei Beyond the Iron Peak", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1990 American Institute of Physics. \n\nThis work was supported NASA grant NGR 05-002-160 at \nCaltech, and by NASA grants NGR 26-008-001 and NAG 5-846 and the McDonnell \nCenter for Space Sciences at Washington University. We appreciate the assistance \nof B. W. Gauld and T. L. Garrard.\n\nPublished - 1989-25.pdf
", "abstract": "Isotope measurements of cosmic ray nuclei beyond the Fe peak are considered, using the charge region from Z=29 to Z\u223c40 as an example. Such studies can address a number of important questions that bear on cosmic ray origin, acceleration, and propagation. One possible approach for measuring isotopes with Z\u226530 is based on large\u2010area arrays of silicon solid state detectors combined with scintillating optical fiber trajectory detectors optical fiber trajectory detectors.", "date": "1990-03-20", "date_type": "published", "publisher": "American Institute of Physics", "id_number": "CaltechAUTHORS:20140715-152107224", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140715-152107224", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NGR 26-008-001" }, { "agency": "NASA", "grant_number": "NAG 5-846" }, { "agency": "McDonnell Center for Space Sciences, Washington University" } ] }, "other_numbering_system": { "items": [ { "id": "1989-25", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Jones-W-V", "name": { "family": "Jones", "given": "W. Vernon" } }, { "id": "Kerr-F-J", "name": { "family": "Kerr", "given": "Frank J." } }, { "id": "Ormes-J-F", "name": { "family": "Ormes", "given": "J. F." } } ] }, "doi": "10.1063/1.39162", "primary_object": { "basename": "1989-25.pdf", "url": "https://authors.library.caltech.edu/records/k7ebs-xvx02/files/1989-25.pdf" }, "pub_year": "1990", "author_list": "Mewaldt, R. A.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/pww0v-ptj63", "eprint_id": 45632, "eprint_status": "archive", "datestamp": "2023-08-19 22:20:23", "lastmod": "2023-10-26 18:07:36", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. R." } }, { "id": "Gunsfeld-J-M", "name": { "family": "Gunsfeld", "given": "J. M." } }, { "id": "Palmer-D-M", "name": { "family": "Palmer", "given": "D. M." } }, { "id": "Prince-T-A", "name": { "family": "Prince", "given": "T. A." }, "orcid": "0000-0002-8850-3627" }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Coded-Aperture Timing Measurements of the Crab Pulsar and A0535+26", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Organizing Committee of the 21st Int. Cosmic Ray Conf. Provided by the NASA Astrophysics Data System.\n\nThis work has been partially supported by NASA grant NGR 05-002-160.\n\nPublished - 1989-12.pdf
", "abstract": "We report timing observations of the Crab Pulsar and A0535+26 made with the\nCaltech imaging gamma-ray telescope, a coded-aperture instrument which\noperates in the energy range 30 keV - 10 MeV. Observations of the Crab region\nwere made in five separate balloon flights during the period H>86-rn89. A0535+26\nwas detected in its outburst phase during the fifth observation in 1989 April. The\nuse of coded-aperture instruments for timing and the statistics of the timing\nmeasurements will also be discussed.", "date": "1990-01", "date_type": "published", "publisher": "University of Adelaide", "id_number": "CaltechAUTHORS:20140509-090806671", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140509-090806671", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NCR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1989-12", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Protheroe-R-J", "name": { "family": "Protheroe", "given": "R. J." } } ] }, "primary_object": { "basename": "1989-12.pdf", "url": "https://authors.library.caltech.edu/records/pww0v-ptj63/files/1989-12.pdf" }, "pub_year": "1990", "author_list": "Cook, W. R.; Gunsfeld, J. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/ypne2-yw365", "eprint_id": 47199, "eprint_status": "archive", "datestamp": "2023-08-19 22:10:48", "lastmod": "2023-10-26 20:23:51", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "Cosmic Ray Source Abundances Derived from High Energy Measurements of Fe-Group Nuclei", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Organizing Committee of the 21st Int. Cosmic Ray Conference. Provided by the NASA Astrophysics Data System.\n\nThis work was supported by NASA grants NAG8-678 and NCR\n05-002-160. We appreciate discussions of HEAO data with W. R. Binns, T. L. Garrard, J.\nKlarmann, and C. J. Waddington, and help with the propagation code from B. T. Hayes.\n\nPublished - 1989-23.pdf
", "abstract": "We examine the cosmic ray source composition of elements from Ar to Ni (18\u2264 Z\u226428) using\ndata from ~0.l to ~200 GeV /nuc and a cosmic ray propagation code that includes\nimproved fragmentation cross-sections. By fitting available satellite data over more than\nthree decades in energy /nuc, including recent HEA0-3 data, we obtain improved source\nabundances for Ar, Ca, Cr, Mn, and Ni, and compare these with recent determinations of\nthe solar composition. We find no evidence for an energy-dependent source composition\nbelow ~20 GeV/nuc, but the data at higher energies deserve further study.", "date": "1990", "date_type": "published", "publisher": "University of Adelaide", "id_number": "CaltechAUTHORS:20140714-162316365", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140714-162316365", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG8-678" }, { "agency": "NASA", "grant_number": "NCR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1989-23", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Protheroe-R-J", "name": { "family": "Protheroe", "given": "R. J." } } ] }, "primary_object": { "basename": "1989-23.pdf", "url": "https://authors.library.caltech.edu/records/ypne2-yw365/files/1989-23.pdf" }, "pub_year": "1990", "author_list": "Mewaldt, R. A. and Webber, W. R." }, { "id": "https://authors.library.caltech.edu/records/e26xw-96c94", "eprint_id": 45633, "eprint_status": "archive", "datestamp": "2023-08-19 22:09:43", "lastmod": "2023-10-26 18:07:38", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Grove-J-E", "name": { "family": "Grove", "given": "J. E." } }, { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Buffington-A", "name": { "family": "Buffington", "given": "A." } }, { "id": "Rasmussen-I-L", "name": { "family": "Rasmussen", "given": "I. L." } } ] }, "title": "A Measurement of the Isotopic Composition of Cosmic Ray Iron", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Organizing Committee of the 21st Int. Cosmic Ray Conf. Provided by the NASA Astrophysics Data System.\n\nThis work was supported in part by NASA under grant NGR 05-\n002-160. We are grateful to P. S. Gibner for his contributions to this work and to the personnel\nof the National Scientific Balloon Facility and the Wallops Flight Facility for their\nexcellent support.\n\nPublished - 1989-14.pdf
", "abstract": "We present a new measurement of the isotopic composition of cosmic ray iron in the energy\ninterval ~1550-2200 MeV /nucleon. The data were collected during the May 1984 flight of a balloon-borne spectrometer and show an average mass resolution of ~0.7 amu. The instrument employed the Cerenkov-Energy technique for mass determination. The observed ^(54)Fe/^(56)Fe ratio, 0.14 +0.18/-0.11 at the top of the atmosphere, is consistent with a solar system composition at the cosmic ray source. We also place an upper limit on the ^(58)Fe/^(56)Fe ratio at the top of the atmosphere of \u2264.07. Both are consistent with previous\nmeasurements at lower energies.", "date": "1990", "date_type": "published", "publisher": "University of Adelaide", "id_number": "CaltechAUTHORS:20140509-091626822", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140509-091626822", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NCR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1989-14", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Protheroe-R-J", "name": { "family": "Protheroe", "given": "R. J." } } ] }, "primary_object": { "basename": "1989-14.pdf", "url": "https://authors.library.caltech.edu/records/e26xw-96c94/files/1989-14.pdf" }, "pub_year": "1990", "author_list": "Grove, J. E.; Christian, E. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/tp6k8-94t88", "eprint_id": 45486, "eprint_status": "archive", "datestamp": "2023-08-19 22:09:03", "lastmod": "2023-10-26 18:01:19", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "The Journeys of the Voyagers", "ispublished": "unpub", "full_text_status": "public", "abstract": "[no abstract]", "date": "1990", "date_type": "published", "publisher": "Encyclopedia Britannica", "place_of_pub": "Chicago, IL", "pagerange": "27", "id_number": "CaltechAUTHORS:20140505-092814120", "isbn": "9780852295250", "book_title": "Yearbook of science and the future", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140505-092814120", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1990-01", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "pub_year": "1990", "author_list": "Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/tq2v1-ssb21", "eprint_id": 47089, "eprint_status": "archive", "datestamp": "2023-08-19 22:10:25", "lastmod": "2023-10-26 20:18:21", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "Time Variation of Radial and Latitudinal Gradients of Anomalous Cosmic Ray Oxygen in the Outer Heliosphere", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Organizing Committee of the 21st Int. Cosmic Ray Conference. Provided by the NASA Astrophysics Data System.\n\nWe thank H. Mora.al for several stimulating discussions. We\nare grateful to T. Hoeksema for providing the neutral sheet tilt data. This work. was supported\nin part by NASA under contract NAS-7-918 and and grant NGR-05-002-160.\n\nPublished - 1989-18.pdf
", "abstract": "We have used data from the Voyager I (VI), Voyager 2 (V2), and Pioneer IO (PIO)\nspacecraft to monitor the radial a.nd latitudinal gradients of anomalous cosmic ray oxygen\nin the energy range 7.1 - 17.l MeV /nuc from 1984 to 1989. We find that the latitudinal\ngradient varies from near zero value in 1984-85 to -5.5%/deg in mid-19871 returning to near\nzero value by the end of 1988. The magnitude of the latitudinal gradient is inversely correlated\nwith the radial gradient. The variations in the radial and latitudinal gradients are\ncorrelated with the tilt of the neutral sheet for tilts \u227e30 \u00b0, as expected from a sim pie model\nof particle propagation which includes curvature and gradient drifts in the large-scale\nheliospheric magnetic field.", "date": "1990", "date_type": "published", "publisher": "Department of Physics and Mathematical Physics, The University of Adelaide", "id_number": "CaltechAUTHORS:20140708-163956095", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140708-163956095", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS-7-918" }, { "agency": "NASA", "grant_number": "NGR-05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1989-18", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Protheroe-R-J", "name": { "family": "Protheroe", "given": "Raymond J." } } ] }, "primary_object": { "basename": "1989-18.pdf", "url": "https://authors.library.caltech.edu/records/tq2v1-ssb21/files/1989-18.pdf" }, "pub_year": "1990", "author_list": "Cummings, A. C.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/ts4gr-93p29", "eprint_id": 47085, "eprint_status": "archive", "datestamp": "2023-08-19 22:10:12", "lastmod": "2023-10-26 20:18:14", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Grove-J-E", "name": { "family": "Grove", "given": "J. E." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "Contribution to Cherenkov Resolution from Knock-on Electrons", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Organizing Committee of the 21st Int. Cosmic Ray Conference. Provided by the NASA Astrophysics Data System.\n\nWe acknowledge the essential contribution of E. C. Stone to this work, supported in part by NASA contract NAG 5-878 and grant NGR 05-002-160.\n\nPublished - 1989-15.pdf
", "abstract": "Calculations of the mean and standard error of the added Cerenkov component\nfrom knock-on electrons for sample counters with refractive indices ranging from n = 1.03\nto n = 1.49 are presented. We find that this contribution to the Cerenkov resolution is\nsignificant, but not dominant, for typical detector parameters.", "date": "1990", "date_type": "published", "publisher": "Caltech Library", "id_number": "CaltechAUTHORS:20140708-162908441", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140708-162908441", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG 5-878" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1989-15", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Protheroe-R-J", "name": { "family": "Protheroe", "given": "R. J." } } ] }, "primary_object": { "basename": "1989-15.pdf", "url": "https://authors.library.caltech.edu/records/ts4gr-93p29/files/1989-15.pdf" }, "pub_year": "1990", "author_list": "Grove, J. E. and Mewaldt, R. A." }, { "id": "https://authors.library.caltech.edu/records/8b8q6-8e083", "eprint_id": 47202, "eprint_status": "archive", "datestamp": "2023-08-19 22:10:52", "lastmod": "2023-10-26 20:23:57", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "Temporal Variations of Anomalous Cosmic Rays and Further Evidence for Anomalous Cosmic Ray Hydrogen", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Organizing Committee of the 21st Int. Cosmic Ray Conference. Provided by the NASA Astrophysics Data System.\n\nThis work was supported by NASA grants NAG8-678 and NCR\n05-002-160. We appreciate discussions of HEAO data with W. R. Binns, T. L. Garrard, J.\nKlarmann, and C. J. Waddington, and help with the propagation code from B. T. Hayes.\n\nPublished - 1989-24.pdf
", "abstract": "We examine the cosmic ray source composition of elements from Ar to Ni (18\u2264Z\u226428) using\ndata from ~.l to ~200 GeV /nuc and a cosmic ray propagation code that includes\nimproved fragmentation cross-sections. By fitting available satellite data over more than\nthree decades in energy /nuc, including recent HEA0-3 data, we obtain improved source\nabundances for Ar, Ca, Cr, Mn, and Ni, and compare these with recent determinations of\nthe solar composition. We find no evidence for an energy-dependent source composition\nbelow ~20 GeV/nuc, but the data at higher energies deserve further study.", "date": "1990", "date_type": "published", "publisher": "Department of Physics and Mathematical Physics, University of Adelaide", "id_number": "CaltechAUTHORS:20140714-162918647", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140714-162918647", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG8-678" }, { "agency": "NASA", "grant_number": "NGR-05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1989-24", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Protheroe-R-J", "name": { "family": "Protheroe", "given": "Raymond J." } } ] }, "primary_object": { "basename": "1989-24.pdf", "url": "https://authors.library.caltech.edu/records/8b8q6-8e083/files/1989-24.pdf" }, "pub_year": "1990", "author_list": "Mewaldt, R. A. and Webber, W. R." }, { "id": "https://authors.library.caltech.edu/records/4n49x-9pd44", "eprint_id": 47194, "eprint_status": "archive", "datestamp": "2023-08-19 22:10:38", "lastmod": "2023-10-26 20:23:39", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "Radial and Latitudinal Gradients of Anomalous Cosmic-Ray Oxygen and Helium from 1 to ~41 AU", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Organizing Committee of the 21st Int. Cosmic Ray Conference. Provided by the NASA Astrophysics Data System.\n\nWe thank Todd Hoeksema for providing the neutral sheet tilt data. This work was supported in part by\nNASA under contracts NAS-7-918 and NAG 5-727 and\ngrant NGR-05-002-160.\n\nPublished - 1989-21.pdf
", "abstract": "We have used data from the IMP 8, Voyager 1 (VI), Voyager 2 (V2), Pioneer 11 (Pll), and Pioneer 10 (PIO) spacecraft. to determine the radial and latitudinal gradients of\nanomalous cosmic ray oxygen in the energy range ~7 - 25 MeV/nuc and anomalous cosmic\nray helium in the energy range ~20- 25 MeV/nuc for a time period near minimum solar\nmodulation in 1987. We find that the radial gradients of both species are decreasing functions\nof radial distance, r, approximately r^(-1) for oxygen and r^(-0.7) for helium. The\nlatitudinal gradient is large and negative, implying significant spherical asymmetry in the\nheliospheric distribution of these particles.", "date": "1990", "date_type": "published", "publisher": "Department of Physics and Mathematical Physics, The University of Adelaide", "id_number": "CaltechAUTHORS:20140714-155936587", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140714-155936587", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS-7-918" }, { "agency": "NASA", "grant_number": "NGR-05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1989-21", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Protheroe-R-J", "name": { "family": "Protheroe", "given": "Raymond J." } } ] }, "primary_object": { "basename": "1989-21.pdf", "url": "https://authors.library.caltech.edu/records/4n49x-9pd44/files/1989-21.pdf" }, "pub_year": "1990", "author_list": "Cummings, A. C.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/wadp3-4qn61", "eprint_id": 45587, "eprint_status": "archive", "datestamp": "2023-08-19 22:09:21", "lastmod": "2023-10-26 18:05:48", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Vylet-V", "name": { "family": "Vylet", "given": "V." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" } ] }, "title": "Response of Ionization Chambers and Cherenkov Counters to Relativistic Ultraheavy Nuclei", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Organizing Committee of the 21st Int. Cosmic Ray Conf. Provided by the NASA Astrophysics Data System.\n\nWe thank the staff of the LBL Bevalac, and in\nparticular Hank Crawford, Jack Engel age, Mel Flores and Fred Lothrop\nfor their help. The help of E. C. Stone, who would have been a co-author\nwere it not for conference rules, is also gratefully acknowledged. This\nwork was supported in part by NASA grants NAGS-498,500,502 and\nNGR 05-002-160, 24-005-050 and 26-008-001.\n\nPublished - 1989-09.pdf
", "abstract": "We have exposed a detector, similar to the one used on the HEAO Heavy\nNuclei Experiment {Binns, et al., 1981) to beams of _(26)Fe, _(57)La, _(61)Ho and\n_(79)Au at the LBL Bevalac. We will report on the deviations from z2\nscaling for the signals in the ion chambers and the Cherenkov counters\nas a function of energy and Z. These deviations are definitely small and\nimply an error of less than one charge unit in the charge\ndeterminations used in the Heavy Nuclei Experiment (Binns, et al.,\n1989).", "date": "1990", "date_type": "published", "publisher": "University of Adelaide", "id_number": "CaltechAUTHORS:20140507-142954825", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140507-142954825", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG8-498" }, { "agency": "NASA", "grant_number": "NAG8-500" }, { "agency": "NASA", "grant_number": "NAG8-502" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NGR 24-005-050" }, { "agency": "NASA", "grant_number": "NGR 26-008-001" } ] }, "other_numbering_system": { "items": [ { "id": "1989-09", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Protheroe-R-J", "name": { "family": "Protheroe", "given": "R. J." } } ] }, "primary_object": { "basename": "1989-09.pdf", "url": "https://authors.library.caltech.edu/records/wadp3-4qn61/files/1989-09.pdf" }, "pub_year": "1990", "author_list": "Klarmann, J.; Vylet, V.; et el." }, { "id": "https://authors.library.caltech.edu/records/6h0nz-bdy87", "eprint_id": 45595, "eprint_status": "archive", "datestamp": "2023-08-19 22:09:25", "lastmod": "2023-10-26 18:06:09", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Evidence for Anomalous Cosmic Ray Hydrogen", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Organizing Committee of the 21st Int. Cosmic Ray Conf. Provided by the NASA Astrophysics Data System.\n\nWe thank-F. B. McDonald and W. R. Webber for\ntheir helpful discussions and suggestions. - We also appreciate the contributions of\nthe other Voyager CRS team members at Caltech and the Goddard Space Flight\nCenter. This work was supported in part by NASA under contract NAS 7-918 and\ngrant NCR 05-002-160. E. R. Christian is currently supported by the University\nSpace Research Association.\n\nPublished - 1989-10.pdf
", "abstract": "The period of solar minimum activity in 1987 provided the first evidence for the\nexistence of anomalous cosmic ray (ACR) hydrogen (Christian et al. 1U88). More\nrecent data from the Voyager 1 {Vl) and Voyager 2 (V2) spacecraft and subsequent\nimproved analysis of earlier data serve to confirm the presence of ACR hydrogen.\nThis paper will cover some of these new developments in the analysis.", "date": "1990", "date_type": "published", "publisher": "University of Adelaide", "id_number": "CaltechAUTHORS:20140508-090605066", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140508-090605066", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS 7-918" }, { "agency": "NASA", "grant_number": "NCR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1989-10", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Protheroe-R-J", "name": { "family": "Protheroe", "given": "R. J." } } ] }, "primary_object": { "basename": "1989-10.pdf", "url": "https://authors.library.caltech.edu/records/6h0nz-bdy87/files/1989-10.pdf" }, "pub_year": "1990", "author_list": "Christian, E. R.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/szb7a-zvs54", "eprint_id": 47088, "eprint_status": "archive", "datestamp": "2023-08-19 22:10:21", "lastmod": "2023-10-26 20:18:19", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Adams-J-H-Jr", "name": { "family": "Adams", "given": "J. H., Jr." } }, { "id": "Garcia-Munoz-N", "name": { "family": "Garcia-Munoz", "given": "M." } }, { "id": "Grigorov-N-L", "name": { "family": "Grigorov", "given": "N. L." } }, { "id": "Klecker-B", "name": { "family": "Klecker", "given": "B." } }, { "id": "Kondratyeva-M-A", "name": { "family": "Kondratyeva", "given": "M. A." } }, { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Tretyakova-Ch-A", "name": { "family": "Tretyakova", "given": "Ch. A." } }, { "id": "Tylka-A-J", "name": { "family": "Tylka", "given": "A. J." } } ] }, "title": "Anomalous Cosmic Ray Measurements in and outside the Magnetosphere: Implications for the Charge State", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Organizing Committee of the 21st Int. Cosmic Ray Conference. Provided by the NASA Astrophysics Data System.\n\nThis work was supported in part by NASA contracts NAG8-678, NAG5-728,\nNAG5-706, and W-16,480; NASA grants NGR 05-002-160, and NGR 21-002-224;\nNSF grant ATM 87-20608; and BMFT-FRG contract RV 14-BB/74.\n\nPublished - 1989-17.pdf
", "abstract": "We report preliminary results from the Joint Study of the Charge State of the\nAnomalous Component, a cooperative project of the space agencies of the US and\nthe USSR. The so-called \"anomalous\" cosmic ray component, including the elements\nHe, N, 0, and Ne, as well as rarer species, is believed to represent a sample of neutral\ninterstellar atoms that has been swept into the heliosphere, singly ionized, and\nthen accelerated to energies as high as 60 MeV /nucleon. A key test of this theory is\na direct verification that these energetic nuclei are indeed singly ionized. This prediction\ncan be tested by comparing simultaneous measurements of the flux of\nanomalous cosmic rays made inside and outside the magnetosphere, using the\ngeomagnetic field as a rigidity-dependent filter. Grigorov et al. have recently\nreported measurements of the flux of 10 MeV /nucleon C, N, and 0 nuclei made during\n1986 to 1988 by a series of KOSMOS satellites flown in low Earth orbit. We\nhave analyzed data from the same time periods from several instruments on IMP-8\nand ICE, which were located outside the magnetosphere. We compare the 0 fluxes\ninside and outside the magnetosphere over this time period and examine the implications\nof these measurements for the charge state of anomalous cosmic rays.", "date": "1990", "date_type": "published", "publisher": "Department of Physics and Mathematical Physics, The University of Adelaide", "id_number": "CaltechAUTHORS:20140708-163614888", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140708-163614888", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG8-678" }, { "agency": "NASA", "grant_number": "NAG5-728" }, { "agency": "NASA", "grant_number": "NAG5-706" }, { "agency": "NASA", "grant_number": "W-16,480" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NGR 21-002-224" }, { "agency": "NSF", "grant_number": "ATM 87-20608" }, { "agency": "Bundesministerium f\u00fcr Forschung und Technologie (BMFT)", "grant_number": "RV 14-BB/74" } ] }, "other_numbering_system": { "items": [ { "id": "1989-17", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Protheroe-R-J", "name": { "family": "Protheroe", "given": "Raymond J." } } ] }, "primary_object": { "basename": "1989-17.pdf", "url": "https://authors.library.caltech.edu/records/szb7a-zvs54/files/1989-17.pdf" }, "pub_year": "1990", "author_list": "Adams, J. H., Jr.; Garcia-Munoz, M.; et el." }, { "id": "https://authors.library.caltech.edu/records/md5mk-0td57", "eprint_id": 45636, "eprint_status": "archive", "datestamp": "2023-08-19 22:09:48", "lastmod": "2023-10-26 18:07:43", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. R." } }, { "id": "Palmer-D-M", "name": { "family": "Palmer", "given": "D. M." } }, { "id": "Prince-T-A", "name": { "family": "Prince", "given": "T. A." }, "orcid": "0000-0002-8850-3627" }, { "id": "Starr-C-H", "name": { "family": "Starr", "given": "C. H." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Hard X-Ray and Gamma-Ray Observations of SN 1987A during the Period 1987-1989", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Organizing Committee of the 21st Int. Cosmic Ray Conf. Provided by the NASA Astrophysics Data System.\n\nPublished - 1989-13.pdf
", "abstract": "The Caltech Gamma-Ray Imaging Payload (GRIP) has observed SN1987A on\nfour balloon flights from Alice Springs, Australia, in May and Nov. 1987, April\n1988, and April 1989 (days: 85, 269, 414, and 771 respectively). The instrument\nis a coded-aperture telescope, sensitive to radiation in the energy range 30 keV to\n10 MeV (Althouse et al. 1985). Both gamma-ray continuum and line emission\nwere detected from the supernova, in qualitative agreement with existing models.\nIn addition, we have obtained the first images of the SN1987 A region at gamma-ray\nenergies, confirming that the bulk of the gamma-ray emission comes from the\nsupernova, and not from LMC X-1 (Cook et al. 1988). We review the results of\nthese observations, including flux levels and upper limits for both line emission\nand Compton scattered continuum for each of the four flights.", "date": "1990", "date_type": "published", "publisher": "University of Adelaide", "id_number": "CaltechAUTHORS:20140509-093708786", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140509-093708786", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NCR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1989-13", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Protheroe-R-J", "name": { "family": "Protheroe", "given": "R. J." } } ] }, "primary_object": { "basename": "1989-13.pdf", "url": "https://authors.library.caltech.edu/records/md5mk-0td57/files/1989-13.pdf" }, "pub_year": "1990", "author_list": "Schindler, S. M.; Cook, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/k6b6d-dgv75", "eprint_id": 45586, "eprint_status": "archive", "datestamp": "2023-08-19 22:09:16", "lastmod": "2023-10-26 18:05:46", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" } ] }, "title": "Global Representation of the Cross Sections for the Production of Fragments of UH Nuclei", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Organizing Committee of the 21st Int. Cosmic Ray Conf. Provided by the NASA Astrophysics Data System.\n\nWe thank the staff at LBL, especially Hank Crawford, Jack Engelage,\nMel Flores and Fred Lothrop for their help. This work was partially supported by NASA\nGrants NAG 8-498, -500, -502 and NGR 05-002-160, 24-005-050 and 26-008-001.\n\nPublished - 1989-08.pdf
", "abstract": "We have examined the fragmentation of relativistic iron, lanthanum, holmium and gold\nnuclei with energies between 500 and 1200 MeV/n incident on targets of polyethylene, carbon,\naluminum, copper and lead. We have determined 1,256 elemental partial cross sections for the\nproduction of fragments from interactions in pure target materials. Deduced values have been\nfound for another 417 cross sections in a hydrogen medium. The dependencies of these cross\nsections on energy, mass and charge have been studied. We have generated a seven parameter\nglobal fit to the cross sections for the heavy targets which fits a significant range of the data with\na standard deviation of 7%. We have also generated a similar global fit to the cross sections for\nthe hydrogen target which fits a slightly smaller range of the data with a standard deviation of\n10%. These representations show that weak factorization can apply, but slightly better fits can\nbe obtained without it. The mean mass losses observed for fragments that have lost a few\nprotons, show that typically three or more neutrons are lost with each proton, producing\nfragment nuclei that must be highly proton rich, and consequently very unstable", "date": "1990", "date_type": "published", "publisher": "University of Adelaide", "id_number": "CaltechAUTHORS:20140507-142235633", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140507-142235633", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG8-498" }, { "agency": "NASA", "grant_number": "NAG8-500" }, { "agency": "NASA", "grant_number": "NAG8-502" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NGR 24-005-050" }, { "agency": "NASA", "grant_number": "NGR 26-008-001" } ] }, "other_numbering_system": { "items": [ { "id": "1989-08", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Protheroe-R-J", "name": { "family": "Protheroe", "given": "R. J." } } ] }, "primary_object": { "basename": "1989-08.pdf", "url": "https://authors.library.caltech.edu/records/k6b6d-dgv75/files/1989-08.pdf" }, "pub_year": "1990", "author_list": "Cummings, J. R.; Garrard, T. L.; et el." }, { "id": "https://authors.library.caltech.edu/records/r1nm1-xng57", "eprint_id": 48035, "eprint_status": "archive", "datestamp": "2023-08-19 22:10:57", "lastmod": "2023-10-26 21:29:18", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mason-G-M", "name": { "family": "Mason", "given": "G. M." }, "orcid": "0000-0003-2169-9618" }, { "id": "Baker-D-N", "name": { "family": "Baker", "given": "D. N." } }, { "id": "Blake-J-B", "name": { "family": "Blake", "given": "J. B." } }, { "id": "Callis-L-B", "name": { "family": "Callis", "given": "L. B." } }, { "id": "Hamilton-D-C", "name": { "family": "Hamilton", "given": "D. C." } }, { "id": "Hovestadt-D", "name": { "family": "Hovestadt", "given": "D." } }, { "id": "Klecker-B", "name": { "family": "Klecker", "given": "B." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Scholer-M", "name": { "family": "Scholer", "given": "M." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "von-Rosenvinge-T-T", "name": { "family": "von Rosenvinge", "given": "T. T." } } ] }, "title": "The Solar, Anomalous, and Magnetospheric Particle Explorer", "ispublished": "unpub", "full_text_status": "public", "note": "It is a pleasure to acknowledge the enthusiastic,\nimaginative, and dedicated support of the Goddard Space Flight Center SMEX project in the design of the SAMPEX spacecraft, which went from selection to Critical Design Review in 15 months. The SAMPEX instrument development\nis supported by NASA contract NASS-30704 and by the Bundesministerium fiir Forschung und Technologie, Federal Republic of Germany, contract 010C9002.\n\nPublished - 1990-07.pdf
", "abstract": "The Solar, Anomalous, and Magnetospheric Particle Explorer, SAMPEX, will carry out energetic particle studies of outstanding scientific questions in the fields of space plasma physics, solar physics, magnetospheric and middle atmospheric physics, and cosmic ray physics. SAMPEX will measure the electron and ion composition of energetic parti~le populations from -0.4 Me V /nucleon to hundreds\nof MeV /nucleon from a zenith-pointing small satellite in near-polar orbit, using a coordinated set of detectors with excellent charge and mass resolution, and with higher sensitivity than previously flown instruments. While over the magnetic poles, the instruments will study t~e composition of anomalous cosmic rays, solar energetic particles, and galactic cosmic rays. At lower magnetic latitudes, geomagnetic cutoff effects will allow determination of the ionization state of these particles at energies much higher than can be studied from interplanetary\nspacecraft. At subauroral latitudes, SAMPEX wiJI also observe precipitating relativistic magnetospheric electrons, which undergo important interactions within\nthe middle atmosphere.", "date": "1990", "date_type": "published", "publisher": "Oxford University Press", "place_of_pub": "New York", "id_number": "CaltechAUTHORS:20140805-201043094.740", "isbn": "0080411533", "book_title": "Helioseismology from Space", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140805-201043094.740", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-30704" }, { "agency": "Bundesministerium f\u00fcr Forschung und Technologie (BMFT)", "grant_number": "010C9002" } ] }, "other_numbering_system": { "items": [ { "id": "1990-07", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Foing-B-H", "name": { "family": "Foing", "given": "B. H." } } ] }, "primary_object": { "basename": "1990-07.pdf", "url": "https://authors.library.caltech.edu/records/r1nm1-xng57/files/1990-07.pdf" }, "pub_year": "1990", "author_list": "Mason, G. M.; Baker, D. N.; et el." }, { "id": "https://authors.library.caltech.edu/records/rvm1t-cee79", "eprint_id": 47193, "eprint_status": "archive", "datestamp": "2023-08-19 22:10:34", "lastmod": "2023-10-26 20:23:37", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Elemental Composition of the Very Local Interstellar Medium as Deduced from Observations of Anomalous Cosmic Rays", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Organizing Committee of the 21st Int. Cosmic Ray Conference. Provided by the NASA Astrophysics Data System.\n\nWe thank E. Christian for providing the ACR helium spectrum\nand M. Allen for a compilation of photoionization cross sections. We thank H.\nOgawa for a helpful discussion. This work was supported in part by NASA under contract\nNAS-7-918 and grant NGR-05-002-160..\n\nPublished - 1989-20.pdf
", "abstract": "We present a new determination of the relative abundances of the interstellar neutral\natoms CI, NI, 0 I, and Ar I. These abundances are derived from Voyager observations\nof the energy spectra of the anomalous cosmic ray- (ACR) component (He, C, N, 0, Ne, and\nAr), using a new analysis technique. We find that the abundances of NI, 0 I, and Ar I are\nin good agreement with solar system abundances, while the abundance of CI is ~1/100 of\nthe solar system value, consistent with the expectation that C is mostly ionized in the local\ninterstellar medium. As we have reported earlier, we find no evidence for charge-changing\ninteractions associated with the heliopause region.", "date": "1990", "date_type": "published", "publisher": "Department of Physics and Mathematical Physics, University of Adelaide", "id_number": "CaltechAUTHORS:20140714-155302359", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140714-155302359", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "NAS-7-918" }, { "agency": "NSF", "grant_number": "NGR-05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1989-20", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Protheroe-R-J", "name": { "family": "Protheroe", "given": "Raymond J." } } ] }, "primary_object": { "basename": "1989-20.pdf", "url": "https://authors.library.caltech.edu/records/rvm1t-cee79/files/1989-20.pdf" }, "pub_year": "1990", "author_list": "Cummings, A. C. and Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/35ybe-wr972", "eprint_id": 45415, "eprint_status": "archive", "datestamp": "2023-08-19 22:08:54", "lastmod": "2023-10-26 17:58:58", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Vylet-V", "name": { "family": "Vylet", "given": "V." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Metzger-M", "name": { "family": "Metzger", "given": "M." } } ] }, "title": "Energy Spectra Between 10 and Several Hundred GeV/Nucleon for Elements from _(18)Ar to _(23)V: Results from HEAO-3", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Organizing Committee of the 21st Int. Cosmic Ray Conf. Provided by the NASA Astrophysics Data System.\n\nThis research was supported in part by NASA grants NAG8-\n498, 500, 502 and NGR 05-002-160, 24-005-050 and 26-008-001. The assistance of E. C.\nStone is gratefully acknowledged.\n\nPublished - 1989-06.pdf
", "abstract": "We report updates of recently published results on cosmic ray energy spectra of the sub-iron\nnuclei. This paper is based on the following analysis and improvements : a) a better analysis of\nthe charge resolution of the instrument, b) availability of more recent charge-changing cross\nsections necessary to correct the abundances for interactions inside the detector, and c) a recent revision of the results from the French-Danish C2 experiment on HEA0-3 that were included in\nour analysis.", "date": "1990", "date_type": "published", "publisher": "University of Adelaide", "id_number": "CaltechAUTHORS:20140501-111300538", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140501-111300538", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG8-498" }, { "agency": "NASA", "grant_number": "NAG8-500" }, { "agency": "NASA", "grant_number": "NAG8-502" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NGR 24-005-050" }, { "agency": "NASA", "grant_number": "NGR 26-008-001" } ] }, "other_numbering_system": { "items": [ { "id": "1989-06", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Protheroe-R-J", "name": { "family": "Protheroe", "given": "R. J." } } ] }, "primary_object": { "basename": "1989-06.pdf", "url": "https://authors.library.caltech.edu/records/35ybe-wr972/files/1989-06.pdf" }, "pub_year": "1990", "author_list": "Vylet, V.; Waddington, C. J.; et el." }, { "id": "https://authors.library.caltech.edu/records/rd9v3-me763", "eprint_id": 47086, "eprint_status": "archive", "datestamp": "2023-08-19 22:10:17", "lastmod": "2023-10-26 20:18:16", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Moraal-H", "name": { "family": "Moraal", "given": "H." } } ] }, "title": "Proton Modulation Near Solar Minimum Periods in Consecutive Solar Cycles", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Organizing Committee of the 21st Int. Cosmic Ray Conference.\n\nProvided by the NASA Astrophysics Data System.\n\nI gratefully acknowledge the computational and technical\nassistance of K. R. Lim, a.s well as the stimulating discussions with A.C. Cummings and\nE.C. Stone. This work was supported in part by NASA under contract NAS-7-918 and\ngrant NGR-05-002-160.\n\nPublished - 1989-16.pdf
", "abstract": "Observations or the Pioneer/Voyager missions during 1985/1986/1987, together with\nobservations at Earth in 1976/1977 and 1987, are compared with predictions of a steady-state\nmodulation model. The qualitative features of the modulation are well understood,\nbut to get quantitative agreement with observations, drastic modifications have to be made\nto the Parker spiral magnetic field above the solar poles.", "date": "1990", "date_type": "published", "publisher": "University of Adelaide", "id_number": "CaltechAUTHORS:20140708-163116152", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140708-163116152", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS-7-918" }, { "agency": "NASA", "grant_number": "NGR-05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1989-16", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Protheroe-R-J", "name": { "family": "Protheroe", "given": "R. J." } } ] }, "primary_object": { "basename": "1989-16.pdf", "url": "https://authors.library.caltech.edu/records/rd9v3-me763/files/1989-16.pdf" }, "pub_year": "1990", "author_list": "Moraal, H." }, { "id": "https://authors.library.caltech.edu/records/730a6-j0655", "eprint_id": 47197, "eprint_status": "archive", "datestamp": "2023-08-19 22:10:43", "lastmod": "2023-10-26 20:23:46", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Grove-J-E", "name": { "family": "Grove", "given": "J. E." } }, { "id": "Hayes-B-T", "name": { "family": "Hayes", "given": "B. T." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "The ^(54)Mn Clock and Its Implications for Cosmic Ray Propagation and Fe Isotope Studies", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Organizing Committee of the 21st Int. Cosmic Ray Conference. Provided by the NASA Astrophysics Data System.\n\nThis work was supported in part by NASA under grants NAG8-618\nand NCR 05-002-160. We appreciate the assistance of T. L. Garrard.\n\nPublished - 1989-22.pdf
", "abstract": "Radioactive ^(54)Mn, suggested as a clock for measuring the lifetime of heavy cosmic\nrays, has a poorly known B-decay halflife estimated to be in the range from ~10^(5) to 10^(7) yr.\nSome years ago Koch et al. concluded from measurements of the Mn/Fe ratio that a\nsignificant fraction of low-energy (", "date": "1990", "date_type": "published", "publisher": "Department of Physics and Mathematical Physics, The University of Adelaide", "id_number": "CaltechAUTHORS:20140714-161626711", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140714-161626711", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG8-618" }, { "agency": "NASA", "grant_number": "NCR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1989-22", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Protheroe-R-J", "name": { "family": "Protheroe", "given": "Raymond J." } } ] }, "primary_object": { "basename": "1989-22.pdf", "url": "https://authors.library.caltech.edu/records/730a6-j0655/files/1989-22.pdf" }, "pub_year": "1990", "author_list": "Grove, J. E.; Hayes, B. T.; et el." }, { "id": "https://authors.library.caltech.edu/records/btb50-fdj48", "eprint_id": 47090, "eprint_status": "archive", "datestamp": "2023-08-19 22:10:29", "lastmod": "2023-10-26 20:18:23", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Moraal-H", "name": { "family": "Moraal", "given": "H." } } ] }, "title": "Cosmic Ray Perpendicular Diffusion Coefficient and Drift Velocity Calculated from Pioneer/Voyager Observations", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Organizing Committee of the 21st Int. Cosmic Ray Conference. Provided by the NASA Astrophysics Data System.\n\nI gratefully acknowledge stimulating discussions with A.C.\nCummings and E.C. Stone, a.s well as the computational and technical assistance of KR.\nLim. This work was supported in part by NASA under contract NAS-7-918 and grant\nNGR-05-002-160.\n\nPublished - 1989-19.pdf
", "abstract": "The radial and latitudinal gradients measured by the Pioneer 10 and Voyager 1 and 2\nspacecraft, reported by Cummings and Stone (1990), provide a unique opportunity to\ncalculate the cosmic ray perpendicular diffusion coefficient and drift velocity.", "date": "1990", "date_type": "published", "publisher": "Department of Physics and Mathematical Physics, The University of Adelaide", "id_number": "CaltechAUTHORS:20140708-164245697", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140708-164245697", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS-7-918" }, { "agency": "NASA", "grant_number": "NGR-05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1989-19", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Protheroe-R-J", "name": { "family": "Protheroe", "given": "Raymond J." } } ] }, "primary_object": { "basename": "1989-19.pdf", "url": "https://authors.library.caltech.edu/records/btb50-fdj48/files/1989-19.pdf" }, "pub_year": "1990", "author_list": "Moraal, H." }, { "id": "https://authors.library.caltech.edu/records/fv41x-69566", "eprint_id": 45581, "eprint_status": "archive", "datestamp": "2023-08-19 22:09:12", "lastmod": "2023-10-26 18:05:32", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" } ] }, "title": "Cosmic Ray Elemental Abundances for 26Published - 1989-11.pdf
", "abstract": "The first coded-aperture images of the galactic center region at energies above 30 keV\nreveal two strong 7-ray sources. One source is tentatively identified as the X-ray source\n1El740.7-2942. If this source is at the distance of the galactic center, it is one of the most\nluminous objects in the galaxy at energies from 35 to 200 keV. The second source is consistent\nin location with the X-ray source GX354-0. No significant flux was detected from\nthe direction of the galactic nucleus (Sgr A*).", "date": "1990", "date_type": "published", "publisher": "University of Adelaide", "id_number": "CaltechAUTHORS:20140508-141125854", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140508-141125854", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1989-11", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Protheroe-R-J", "name": { "family": "Protheroe", "given": "R. J." } } ] }, "primary_object": { "basename": "1989-11.pdf", "url": "https://authors.library.caltech.edu/records/pb566-6w880/files/1989-11.pdf" }, "pub_year": "1990", "author_list": "Cook, W. R.; Heindl, William A.; et el." }, { "id": "https://authors.library.caltech.edu/records/r2pa4-r0q07", "eprint_id": 45484, "eprint_status": "archive", "datestamp": "2023-08-19 22:09:00", "lastmod": "2023-10-26 18:01:14", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "Edward C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Miner-E-D", "name": { "family": "Miner", "given": "Ellis D." } } ] }, "title": "Results from the Voyager 2 Flyby of Neptune in August of 1989", "ispublished": "unpub", "full_text_status": "public", "note": "c1990.\nSubmitted to McGraw-Hill yearbook of science & technology in 1989.\n\nPublished - p_247-250.pdf
Submitted - 1989-35.pdf
", "date": "1990", "date_type": "published", "publisher": "McGraw-Hill", "place_of_pub": "New York", "pagerange": "247-250", "id_number": "CaltechAUTHORS:20140505-092621229", "isbn": "0070462593", "book_title": "McGraw-Hill yearbook of science & technology 1991 : comprehensive coverage of recent events and research", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140505-092621229", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1989-35", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1989-35.pdf", "url": "https://authors.library.caltech.edu/records/r2pa4-r0q07/files/1989-35.pdf" }, "related_objects": [ { "basename": "p_247-250.pdf", "url": "https://authors.library.caltech.edu/records/r2pa4-r0q07/files/p_247-250.pdf" } ], "pub_year": "1990", "author_list": "Stone, Edward C. and Miner, Ellis D." }, { "id": "https://authors.library.caltech.edu/records/v3dhz-9n604", "eprint_id": 45409, "eprint_status": "archive", "datestamp": "2023-08-19 21:28:58", "lastmod": "2024-01-13 15:27:15", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Solar Abundances as Derived from Solar Energetic Particles", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1989 American Institute of Physics. \n\nPublished online 01 March 1989. \n\nI appreciate T. L. Garrard's help in preparing this manuscript. This \nwork was supported in part by NASA under contract NAS7-918 and grants \nNGR 05-002-160 and NAG5-722.\n\nPublished - 1988-10.pdf
", "abstract": "Recent studies have shown that there are well defined average abundances of heavy (Z\u22732) solar energetic particles (SEPs), with variations in the acceleration and propagation producing a systematic flare\u2010to\u2010flare fractionation that depends on the charge per unit mass of the ion. Correcting the average SEP abundances for the fractionation yields SEP\u2010derived coronal abundances for 20 elements. Higher resolution SEP studies have also provided isotopic abundances for 5 elements. SEP\u2010derived abundances indicate that elements with high first ionization potentials (\u227310 eV) are depleted in the corona relative to the photosphere and provide new information on the solar abundance of C and ^(22)Ne. Future SEP observations offer the prospect of a significant reduction of the uncertainties in solar elemental and isotopic abundances.", "date": "1989-03-01", "date_type": "published", "publisher": "American Institute of Physics", "id_number": "CaltechAUTHORS:20140501-105012914", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140501-105012914", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-918" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NAG5-722" } ] }, "other_numbering_system": { "items": [ { "id": "1988-10", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.1063/1.37986", "primary_object": { "basename": "1988-10.pdf", "url": "https://authors.library.caltech.edu/records/v3dhz-9n604/files/1988-10.pdf" }, "pub_year": "1989", "author_list": "Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/b3wde-w1b69", "eprint_id": 45407, "eprint_status": "archive", "datestamp": "2023-08-19 21:28:53", "lastmod": "2024-01-13 15:27:13", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } } ] }, "title": "The Abundances of the Heavier Elements in the Cosmic Radiation", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1989 American Institute of Physics. \n\nPublished online 01 March 1989. \n\nThis research was supported in part \nby NASA under grants NAG 8-498, 500, \nand 502; and NGR 05-002-160, 24-005-050, \nand 26-008-001.\n\nPublished - 1988-07.pdf
", "abstract": "We review current work on the abundances of the ultraheavy elements in the cosmic radiation, those with Z\u227330. Those abundances are compared with predictions based on propagation and fractionation of elemental abundances from various assumed sources of the cosmic rays. We find striking similarities between the solar system and the cosmic ray source abundances for those elements with 32\u2264Z\u226460. For elements with Z\u227360, there appears to be a substantial enhancement in the abundances of elements synthesized in the r\u2010process.", "date": "1989-03-01", "date_type": "published", "publisher": "American Institute of Physics", "id_number": "CaltechAUTHORS:20140501-104547780", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140501-104547780", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG8-498" }, { "agency": "NASA", "grant_number": "NAG8-500" }, { "agency": "NASA", "grant_number": "NAG8-502" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NGR 24-005-050" }, { "agency": "NASA", "grant_number": "NGR 26-008-001" } ] }, "other_numbering_system": { "items": [ { "id": "1988-07", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.1063/1.38010", "primary_object": { "basename": "1988-07.pdf", "url": "https://authors.library.caltech.edu/records/b3wde-w1b69/files/1988-07.pdf" }, "pub_year": "1989", "author_list": "Binns, W. R.; Garrard, T. L.; et el." }, { "id": "https://authors.library.caltech.edu/records/z4598-69838", "eprint_id": 43795, "eprint_status": "archive", "datestamp": "2023-08-19 21:08:23", "lastmod": "2024-01-13 06:06:07", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. R." } }, { "id": "Palmer-D-M", "name": { "family": "Palmer", "given": "D. M." } }, { "id": "Prince-T-A", "name": { "family": "Prince", "given": "T. A." }, "orcid": "0000-0002-8850-3627" }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Starr-C-H", "name": { "family": "Starr", "given": "C. H." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Gamma-Ray Imaging of the Galactic Center Region", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1989 by the IAU.\nWe acknowledge the important contributions to the development of the GRIP telescope\nmade by W. Althouse, D. Burke, A. Cummings, M. Finger, J. Weger and the personnel\nof the Central Engineering Services at Caltech. We thank the personnel of the\nNational Scientific Balloon Facility and the NASA Wallops Flight Facility for their\nexcellent balloon launch support. This work was supported by NASA grant NGR 05-002-160.\n\nPublished - 1989IAUS..136..581C
", "abstract": "The Caltech imaging \u03b3-ray telescope was launched by balloon from Alice Springs,\nNT, Australia and performed observations of the galactic center during the period 12.62 to 13.00\nApril 1988 UT. The first coded-aperture images of the galactic center region at energies above 30\nkeV show a single strong \u03b3-ray source which is located 0.7\u00b10.1\u00b0 from the galactic nucleus and is\ntentatively identified as 1E1740.7-2942. If the source is at the distance of the galactic center, it is\none of the most luminous objects in the galaxy at energies from 35 to 200 keV.", "date": "1989", "date_type": "published", "publisher": "Kluwer Academic Publishers", "place_of_pub": "Dordrecht, Netherlands", "pagerange": "581-585", "id_number": "CaltechAUTHORS:20140212-110414300", "isbn": "9780792302216", "book_title": "The center of the galaxy : proceedings of the 136th Symposium of the International Astronomical Union", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140212-110414300", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1988-08", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Morris-M", "name": { "family": "Morris", "given": "Mark" } } ] }, "primary_object": { "basename": "1989IAUS..136..581C", "url": "https://authors.library.caltech.edu/records/z4598-69838/files/1989IAUS..136..581C" }, "pub_year": "1989", "author_list": "Cook, W. R.; Palmer, D. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/tqs89-p7270", "eprint_id": 45395, "eprint_status": "archive", "datestamp": "2023-08-19 21:08:52", "lastmod": "2024-01-13 15:27:07", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Ormes-J-F", "name": { "family": "Ormes", "given": "J. F." } } ] }, "title": "Galactic Cosmic Ray Isotope Spectroscopy from the Space Station", "ispublished": "unpub", "full_text_status": "restricted", "note": "We are grateful to a large number of individuals on the Astromag committee who contributed to the material presented here, including in particular W. R. Binns, T. G. Guzik, M. H. Israel, D. Muller, I. L. Rasmussen, J. P. Wefel, and M. E. Wiedenbeck. One of us (JFO) would like to thank the organizing committee of the Space station Conference for their kind hospitality. The work at Caltech was supported by NASA under grants NAG5-878 and NGR 05-002-160.", "abstract": "We discuss prospects for measuring the isotopic composition of galactic cosmic rays with Astromag, a proposed superconducting magnet spectrometer facility for conducting particle astrophysics on the Space Station. Following a brief review of the objectives and status of cosmic ray isotope measurements, we discuss the contribution that Astromag could make in extending these measurements to much higher energy, and present a strawman design for an experiment that might accomplish these goals.", "date": "1989", "date_type": "published", "publisher": "Italian Physical Society", "place_of_pub": "Bologna, Italy", "pagerange": "31-41", "id_number": "CaltechAUTHORS:20140501-093338266", "isbn": "88-7794-026-3", "book_title": "Physics and Astrophysics in the Space Station Era. The first IFSUSS Scientific Meeting", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140501-093338266", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-878" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1987-25", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Ruffini-R", "name": { "family": "Ruffini", "given": "R." } }, { "id": "Bernacca-P-L", "name": { "family": "Bernacca", "given": "P. L." } } ] }, "pub_year": "1989", "author_list": "Mewaldt, R. A. and Ormes, J. F." }, { "id": "https://authors.library.caltech.edu/records/ymmkw-9fb86", "eprint_id": 45410, "eprint_status": "archive", "datestamp": "2023-08-19 21:08:57", "lastmod": "2024-01-13 15:27:16", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "The Abundances of Isotopes in the Cosmic Radiation", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1989 American Institute of Physics. \n\nPublished online 01 March 1989. \n\nI am grateful to the organizers of this conference for \ntheir kind hospitality and to T. L. Garrard, E. C. Stone, W. R. Webber, J. P. \nWefel, M. E. Wiedenbeck, and S. E. Woosley for helpful discussions. This work \nwas supported in part by NASA under grants NAG5-722 and NGR 05-002-160.\n\nPublished - 1988-11.pdf
", "abstract": "Studies of the isotopic composition of nuclei in the cosmic radiation are reviewed, including abundances of the isotopes of elements from H to Ni (nuclear charge 1", "date": "1989", "date_type": "published", "publisher": "American Institute of Physics", "id_number": "CaltechAUTHORS:20140501-105136256", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140501-105136256", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-722" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1988-11", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "doi": "10.1063/1.38009", "primary_object": { "basename": "1988-11.pdf", "url": "https://authors.library.caltech.edu/records/ymmkw-9fb86/files/1988-11.pdf" }, "pub_year": "1989", "author_list": "Mewaldt, R. A." }, { "id": "https://authors.library.caltech.edu/records/hm8nt-7a957", "eprint_id": 45398, "eprint_status": "archive", "datestamp": "2023-08-19 20:55:53", "lastmod": "2024-01-13 15:27:08", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. R." } }, { "id": "Palmer-D-M", "name": { "family": "Palmer", "given": "D. M." } }, { "id": "Prince-T-A", "name": { "family": "Prince", "given": "T. A." }, "orcid": "0000-0002-8850-3627" }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Starr-C-H", "name": { "family": "Starr", "given": "C. H." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Imaging observations of SN1987A at gamma\u2010ray energies", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1988 American Institute of Physics. \n\nPublished online 25 September 1988. \n\nWe gratefully acknowledge the important contributions of W. Althouse, D. \nBurke, A. Cummings, and M. Finger to the development of the GRIP telescope. \nWe thank the personnel of the National Scientific Balloon Facility and the NASA \nWallops Flight Facility for their excellent balloon launch support. This work was \nsupported by NASA grant NGR 05-002-160.\n\nPublished - 1.37215.pdf
", "abstract": "The Caltech imaging \u03b3\u2010ray telescope was launched by balloon from Alice Springs, NT, Australia for observations of SN1987A during the period 18.60\u201318.87 November 1987 UT. The preliminary results presented here are derived from 8200 seconds of instrument livetime on the supernova and 2500 seconds on the Crab Nebula and pulsar at a float altitude of 37 km. We have obtained the first images of the SN1987A region at \u03b3\u2010ray energies confirming that the bulk of the \u03b3\u2010ray emission comes from the supernova and not from LMC X\u20101. A count excess is detected between 300 and 1300 keV from the direction of the supernova, one third of which comes from energy bands of width 80 and 92 keV centered on 847 and 1238 keV, respectively. The excess can be interpreted as a line photon flux plus scattered photon continuum from the radioactive decay of ^(56)Co synthesized in the supernova explosion. We compare our data to recent predictions and find it to be consistent with models invoking moderate mixing of core material into the envelope.", "date": "1988-09-25", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "60-65", "id_number": "CaltechAUTHORS:20140501-093900742", "isbn": "0-88318-370-6", "book_title": "Nuclear Spectroscopy of Astrophysical Sources", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140501-093900742", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1988-03", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Gehrels-N", "name": { "family": "Gehrels", "given": "Neil" } }, { "id": "Share-G-H", "name": { "family": "Share", "given": "Gerald H." } } ] }, "doi": "10.1063/1.37215", "primary_object": { "basename": "1.37215.pdf", "url": "https://authors.library.caltech.edu/records/hm8nt-7a957/files/1.37215.pdf" }, "pub_year": "1988", "author_list": "Cook, W. R.; Palmer, D. M.; et el." }, { "id": "https://authors.library.caltech.edu/records/c41a4-5hk66", "eprint_id": 45386, "eprint_status": "archive", "datestamp": "2023-08-19 20:03:51", "lastmod": "2024-01-13 15:27:05", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Composition, Gradients, and Temporal Variations of the Anomalous Cosmic-Ray Component", "ispublished": "unpub", "full_text_status": "public", "note": "We are grateful to R. E. Vogt for his contributions during his tenure as Principal Investigator for the Voyager CRS. We appreciate contributions from M. Allen who supplied some of the photoionization cross sections and to E. Christian who helped compile and analyze the cross section data. We acknowledge many helpful discussions with R. Mewaldt. We also appreciate the contributions of other Voyager CRS team members at Caltech, Goddard Space Flight Center, and the University of New Hampshire. This work was supported in part by NASA under contracts NAS 7-918 and NAG5-727, and grant NGR 05-002-160.\n\nSubmitted - 1987-22.pdf
", "abstract": "Recent measurements in the outer and inner heliosphere have provided new information on the composition, spatial distribution, and temporal variations of the anomalous component. Two additional elements, carbon and argon, are now found to be enhanced, and a method has been developed to derive the abundances of the neutral gas flowing into the heliosphere. In addition, latitudinal gradients recently observed in the outer heliosphere for both the anomalous and galactic cosmic-ray components are negative, opposite to the positive latitudinal gradients reported during the 1976 period when the solar magnetic field was reversed, as expected if the latitudinal gradients are due to effects of curvature and gradient drift in the solar magnetic field. Although the radial gradient remains positive in the outer solar system, there is evidence that the gradient decreases with distance from the Sun. Finally, current 26-day variations in the flux of anomalous cosmic-ray oxygen are large and regular in 1986-1987 at Voyager 1 at ~30\u00b0 latitude but not at Voyager 2 near the ecliptic plane. We suggest that these variations may result from the combination of a latitudinal gradient with respect to magnetic latitude and the excursion of the spacecraft in latitude caused by a wavy current sheet.", "date": "1988", "date_type": "published", "publisher": "National Center for Atmospheric Research", "id_number": "CaltechAUTHORS:20140430-161715936", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140430-161715936", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-918" }, { "agency": "NASA", "grant_number": "NAG5-727" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1987-22", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Pizzo-V-J", "name": { "family": "Pizzo", "given": "V. J." } }, { "id": "Holzer-T", "name": { "family": "Holzer", "given": "T." } }, { "id": "Sime-D-G", "name": { "family": "Sime", "given": "D. G." } } ] }, "primary_object": { "basename": "1987-22.pdf", "url": "https://authors.library.caltech.edu/records/c41a4-5hk66/files/1987-22.pdf" }, "pub_year": "1988", "author_list": "Cummings, A. C. and Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/dc4q1-fjq14", "eprint_id": 45405, "eprint_status": "archive", "datestamp": "2023-08-19 20:03:59", "lastmod": "2024-01-13 15:27:11", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Gorham-P-W", "name": { "family": "Gorham", "given": "Peter W." } } ] }, "title": "Computational Aspects of Bispectral Analysis in Interferometric Imaging", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright ESO. Provided by the NASA Astrophysics Data System. \n\nThe author wishes to thank G. Smith, T. Nakajima, S. Kulkarni, A. Readhead, and T. Prince for useful discussion and criticism, and G. Fox and the Caltech Concurrent Supercomputing Initiative for support. This work was supported in part by the U.S. National Science Foundation, the U. S. Dept. of Energy, and the W. M. Keck Foundation.\n\nPublished - 1988ESOC___29__191G.pdf
Submitted - 1988-05.pdf
", "abstract": "Although many approaches to phase recovery in the techniques of speckle interferometry and discrete-element optical interferometry are now being currently used, the most promising are those which make use of the closure phase principle (Jennison 1957; Rogstad 1968), which provides an observable phase which is immune to atmospheric corruption, and contains the desired object phases. The general mathematical support for the closure phase quantity is provided by the bispectrum function (Hoffmann et al. 1983), which is a third moment of the complex visibility of the observed (and therefore atmospherically corrupted) source distributions. Specifically, triple products of all visibility elements which can be mapped onto a triangle of discrete interferometer elements, are included in the bispectrum. This constraint implies that the bispectrum volume spans four dimensions, since it is effectively a vector product of the aperture plane with itself, corresponding to the two independent legs of the baseline triangles.", "date": "1988", "date_type": "published", "publisher": "European Southern Observatory", "id_number": "CaltechAUTHORS:20140501-103545940", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140501-103545940", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF" }, { "agency": "Department of Energy (DOE)" }, { "agency": "W. M. Keck Foundation" } ] }, "other_numbering_system": { "items": [ { "id": "1988-05", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "D'Odorico-S", "name": { "family": "D'Odorico", "given": "S." } }, { "id": "Swings-J-P", "name": { "family": "Swings", "given": "J.-P." } } ] }, "primary_object": { "basename": "1988-05.pdf", "url": "https://authors.library.caltech.edu/records/dc4q1-fjq14/files/1988-05.pdf" }, "related_objects": [ { "basename": "1988ESOC___29__191G.pdf", "url": "https://authors.library.caltech.edu/records/dc4q1-fjq14/files/1988ESOC___29__191G.pdf" } ], "pub_year": "1988", "author_list": "Gorham, Peter W." }, { "id": "https://authors.library.caltech.edu/records/m23f2-fa033", "eprint_id": 45700, "eprint_status": "archive", "datestamp": "2023-08-19 19:05:16", "lastmod": "2023-10-26 18:10:37", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "McDonald-F-B", "name": { "family": "McDonald", "given": "F. B." } }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } }, { "id": "Lal-N", "name": { "family": "Lal", "given": "N." } } ] }, "title": "Radial and Latitudinal Gradients of Anomalous Cosmic-Ray Oxygen and Helium and Galactic Cosmic Rays in the Outer Heliosphere", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 INR. Provided by the NASA Astrophysics Data System.\n\nThis work was supported in part by NASA under contract\nNAS-7-918 and grant NGR-05-002-160.\n\nPublished - 1987-11.pdf
", "abstract": "We have used measurements from instruments on Voyagers 1 and 2 and Pioneer 10\nto derive simultaneous latitudinal and radial gradients of anomalous cosmic-ray helium\nand oxygen and galactic cosmic rays during the latter part of 1986. We find that the\nnegative latitudinal gradients that first appeared in 1985 when Voyager 1 reached\nheliolatitudes in excess of the current sheet continue to be observed, with an increased\nmagnitude probably related to the decreasing tilt of the current sheet. The sign of this\ngradient is opposite to that reported during the last solar cycle when the solar magnetic\nfield polarity was reversed, as predicted by propagation models in which curvature and\ngradient drifts are important. Although during the 1985-1986 time period radial\ngradients in the outer heliosphere appeared to decrease, the ratios of the radial and\nlatitudinal gradients remained similar for both anomalous and galactic particles as\npredicted by drift theory. These observations indicate that the particles move inward\npreferentially at low latitudes from the heliospheric boundary during the current phase of\nthe solar cycle.", "date": "1987", "date_type": "published", "publisher": "Proceedings of the 21st International Cosmic Ray Conference", "id_number": "CaltechAUTHORS:20140512-142436514", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140512-142436514", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS-7-918" }, { "agency": "NASA", "grant_number": "NGR-05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1987-11", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kozyarivsky-V-A", "name": { "family": "Kozyarivsky", "given": "V. A." } } ] }, "primary_object": { "basename": "1987-11.pdf", "url": "https://authors.library.caltech.edu/records/m23f2-fa033/files/1987-11.pdf" }, "pub_year": "1987", "author_list": "Cummings, A. C.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/7mm09-8cv15", "eprint_id": 45711, "eprint_status": "archive", "datestamp": "2023-08-19 19:05:25", "lastmod": "2023-10-26 18:11:03", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Large-Scale Radial Gradient of Anomalous Cosmic-Ray Oxygen from 1 to ~30 AU", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 INR. Provided by the NASA Astrophysics Data System.\n\nWe are grateful to R. E. Vogt for his contributions during his\ntenure as Principal Investigator for the Voyager CRS. We also appreciate the\ncontributions of the other Voyager CRS team members at Caltech, the University of New\nHampshire, and the Goddard Space Flight Center. This work was supported in part by\nNASA under contracts NAS-7-918 and NAG 5-727 and grant NGR-05-002-160.\n\nPublished - 1987-13.pdf
", "abstract": "The cosmic~ray instruments on IMP 8 and Voyagers 1 and 2 have been used to measure the energy spectrum and large-scale radial gradient of anomalous cosmic-ray\noxygen with -5-30 MeV/nuc for the period 1986/206-310. We find that the flux of\nanomalous oxygen at 1 AU is continuing to recover, with an average intensity that is a\nfactor of -4 lower than the 1974-78 solar minimum spectrum. The data from the three\nspacecraft are consistent with a constant radial gradient at -10 Me V /nuc of -15%/ AU\nfrom 1 to 28 AU, similar to that for the previous solar minimum period, but a factor of\n-4 higher than that for the 21- 39 AU region. These results suggest that the radial\ngradient decreases with radial distance or that there is a longitudinal gradient of\n-1%/AU. Under either assumption we find negative latitudinal gradients which, at the\nposition of Voyager 1 (-28 AU), are comparable in magnitude to the radial gradients.", "date": "1987", "date_type": "published", "publisher": "Proceedings of the 21st International Cosmic Ray Conference", "id_number": "CaltechAUTHORS:20140513-101000324", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140513-101000324", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS-7-918" }, { "agency": "NASA", "grant_number": "NAG 5-727" }, { "agency": "NASA", "grant_number": "NGR-05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1987-13", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kozyarivsky-V-A", "name": { "family": "Kozyarivsky", "given": "V. A." } } ] }, "primary_object": { "basename": "1987-13.pdf", "url": "https://authors.library.caltech.edu/records/7mm09-8cv15/files/1987-13.pdf" }, "pub_year": "1987", "author_list": "Cummings, A. C.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/fjwtq-v7q70", "eprint_id": 45699, "eprint_status": "archive", "datestamp": "2023-08-19 19:05:11", "lastmod": "2023-10-26 18:10:35", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Elemental Composition of the Anomalous Cosmic-Ray Component", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 INR. Provided by the NASA Astrophysics Data System.\n\nWe thank R. A. Mewaldt for many helpful discussions. We\nthank M. Allen for a tabulation of some of the photoionization cross sections we used.\nThis work was supported in part by NASA under contract NAS 7-918 and grant NGR\n05-002-160.\n\nPublished - 1987-10.pdf
", "abstract": "We report the first definitive observations of anomalous cosmic-ray (ACR) argon and\ncarbon. Using a model for the ionization and acceleration of interstellar neutral atoms,\nwe find A CR-derived abundances for NI, Ne I, and Ar I in the very local interstellar\nmedium (VLISM) that are in excellent agreement with a compilation of solar system\nabundances, showing no evidence that significant charge-exchange processes are associated\nwith the heliopause region. The abundance of CI is nearly 2 orders of magnitude lower\nthan that of the solar system, indicating that most of the C in the VLISM is ionized. We\nfind that neither of two spectroscopically determined local interstellar components have\nneutral compositions identical to that of the ACR-derived VLISM.", "date": "1987", "date_type": "published", "publisher": "Proceedings of the 21st International Cosmic Ray Conference", "id_number": "CaltechAUTHORS:20140512-141917916", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140512-141917916", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS 7-918" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1987-10", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kozyarivsky-V-A", "name": { "family": "Kozyarivsky", "given": "V. A." } } ] }, "primary_object": { "basename": "1987-10.pdf", "url": "https://authors.library.caltech.edu/records/fjwtq-v7q70/files/1987-10.pdf" }, "pub_year": "1987", "author_list": "Cummings, A. C. and Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/h8dsz-cnd80", "eprint_id": 45691, "eprint_status": "archive", "datestamp": "2023-08-19 19:04:44", "lastmod": "2023-10-26 18:10:16", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Gibner-P-S", "name": { "family": "Gibner", "given": "P. S." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" } ] }, "title": "Anisotropy of Galactic Iron of Energy 30 to 500 GeV/amu Studied by HEAO-3", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 INR. Provided by the NASA Astrophysics Data System.\n\nThis research was supported in part by NASA under grants NAG 8-498, 500,\nand 502 and NGR 05-002-160, 24-005,050, and 26-008-001.\n\nPublished - 1987-04.pdf
", "abstract": "The anisotropy of cosmic ray iron observed by the Heavy Nuclei Experiment\n[1] on the HEA0-3 spacecraft has been studied. A high rigidity data set was\nchosen by requiring the Stoermer cutoff be greater than 7 GV, and the energy of\nindividual events was determined by relativistic rise in the ion chamber signal [2].\nEvents which have estimated rigidity well above their Stoermer cutoff rigidity\nwere chosen in order to reduce the effect of the geomagnetic field on the cosmic\nray trajectories. Selecting events with estimated rigidity greater than ~58 GV\nfrom eight months of data yields 2459 events. This data set allows an anisotropy\nmeasurement with a statistical uncertainty of 3%. We will continue to try\nincreasing the size. of the selected data set while limiting systematic errors due to\nthe geomagnetic and interplanetary fields.", "date": "1987", "date_type": "published", "publisher": "Proceedings of the 21st International Cosmic Ray Conference", "id_number": "CaltechAUTHORS:20140512-132135742", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140512-132135742", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NGR 26-008-001" }, { "agency": "NASA", "grant_number": "NGR 24-005-050" }, { "agency": "NASA", "grant_number": "NAG 8-498" }, { "agency": "NASA", "grant_number": "NAG 8-500" }, { "agency": "NASA", "grant_number": "NAG 8-502" } ] }, "other_numbering_system": { "items": [ { "id": "1987-04", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kozyarivsky-V-A", "name": { "family": "Kozyarivsky", "given": "V. A." } } ] }, "primary_object": { "basename": "1987-04.pdf", "url": "https://authors.library.caltech.edu/records/h8dsz-cnd80/files/1987-04.pdf" }, "pub_year": "1987", "author_list": "Garrard, T. L.; Gibner, P. S.; et el." }, { "id": "https://authors.library.caltech.edu/records/q3dvz-ep259", "eprint_id": 45360, "eprint_status": "archive", "datestamp": "2023-08-19 19:03:48", "lastmod": "2023-10-26 17:57:28", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "Galactic Cosmic Ray Isotope Spectroscopy: Status and Future Prospects", "ispublished": "unpub", "full_text_status": "public", "note": "I am grateful to E. C. Stone, W. R. Webber, J. P. Wefel, M. E. Wiedenbeck, and S. E. Woosley for helpful discussions. This work wsa supported in part by NASA under grants NAG5-722 and NGR 05-002-160.\n\nSubmitted - 1987-01.pdf
", "abstract": "A brief review of cosmic ray spectroscopy is presented, focusing on cosmic ray clocks and the composition of cosmic ray source material. Some of the goals and prospects for future cosmic ray isotope spectrometers are discussed.", "date": "1987", "date_type": "published", "publisher": "World Scientific", "place_of_pub": "Singapore", "pagerange": "573-578", "id_number": "CaltechAUTHORS:20140430-133144039", "isbn": "9971503077", "book_title": "Texas Symposium on Relativistic Astrophysics, 13th, Chicago, IL, Dec. 14-19, 1986, Proceedings", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140430-133144039", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-722" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1987-01", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Ulmer-M-P", "name": { "family": "Ulmer", "given": "Melvin Paul" } } ] }, "primary_object": { "basename": "1987-01.pdf", "url": "https://authors.library.caltech.edu/records/q3dvz-ep259/files/1987-01.pdf" }, "pub_year": "1987", "author_list": "Mewaldt, R. A." }, { "id": "https://authors.library.caltech.edu/records/rwkt1-r5046", "eprint_id": 45715, "eprint_status": "archive", "datestamp": "2023-08-19 19:05:38", "lastmod": "2023-10-26 18:11:11", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Christian-E-R", "name": { "family": "Christian", "given": "E. R." }, "orcid": "0000-0003-2134-3937" }, { "id": "Grove-J-E", "name": { "family": "Grove", "given": "J. E." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Zukowski-T", "name": { "family": "Zukowski", "given": "T." } }, { "id": "Kish-J-C", "name": { "family": "Kish", "given": "J. C." } }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "High Resolution Cherenkov Detectors for Use in a Cosmic Ray Isotope Spectrometer", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 INR. Provided by the NASA Astrophysics Data System.\n\nWe are grateful to E. C. Stone for important contributions to\nthis work. We also thank N, Vogt for help in the Cerenkov counter fabrication and\ntesting. Supported in part by NASA under grants NGR 05-002-160 at Caltech and NGR 30-002-052 at UNH.\n\nPublished - 1987-16.pdf
", "abstract": "We describe the development of new high-resolution Cerenkov detectors for use in an\ninstrument designed to measure the isotopic composition of cosmic ray nuclei from Be to\nNi (Z = 4 to 28). The latest version of this balloon-borne instrument contains two new\nlarge-area, (-0.5 m^2) Cerenkov detectors, one composed of Teflon and a second of Pilot-\n425. Through the use of improved light-collection techniques, and a novel radiator design,\nthe photoelectron yield of these counters has been upgraded significantly over that of\nearlier counters. In particular, the greatly improved Cerenkov light yield achieved with\nTeflon makes it an attractive alternative to available liquid counters of similar index of\nrefraction. Laboratory tests of these and other Cerenkov radiators are described, along\nwith estimates of the mass resolution that can be achieved.", "date": "1987", "date_type": "published", "publisher": "Proceedings of the 21st International Cosmic Ray Conference", "id_number": "CaltechAUTHORS:20140513-103520046", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140513-103520046", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NGR 30-002-052" } ] }, "other_numbering_system": { "items": [ { "id": "1987-16", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kozyarivsky-V-A", "name": { "family": "Kozyarivsky", "given": "V. A." } } ] }, "primary_object": { "basename": "1987-16.pdf", "url": "https://authors.library.caltech.edu/records/rwkt1-r5046/files/1987-16.pdf" }, "pub_year": "1987", "author_list": "Christian, E. R.; Grove, J. E.; et el." }, { "id": "https://authors.library.caltech.edu/records/7fx2j-sz494", "eprint_id": 45713, "eprint_status": "archive", "datestamp": "2023-08-19 19:05:30", "lastmod": "2023-10-26 18:11:07", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cooper-J-F", "name": { "family": "Cooper", "given": "J. F." } }, { "id": "Metzger-A-E", "name": { "family": "Metzger", "given": "A. E." } }, { "id": "Chupp-E-L", "name": { "family": "Chupp", "given": "E. L." } } ] }, "title": "Mercury 2000: Stereoscopic Observations of Gamma Ray Flares", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 INR. Provided by the NASA Astrophysics Data System.\n\nPublished - 1987-14.pdf
", "abstract": "Stereoscopic observations of gamma ray radiation from solar flares would provide\nfurther scientific impetus to recent proposals for a planetary observer mission to Mercury in the late 1990's. The solar monitoring phase of this mission could continue through the\nperiod of maximum flare activity in the years 2002-2006 with a dawn-dusk polar orbit\nwhich would allow continuous solar visibility and minimize solar tracking requirements.\nSimultaneous measurements of flare radiation from gamma ray instruments with comparable\nsolar flux sensitivity in orbits around Mercury and Earth would provide stereoscopic\ninformation on directivity and altitude location in the solar atmosphere of the flare radiation sources and might significantly advance understanding of energy release and particle\nacceleration processes in solar flares. The closer proximity of Mercury to the Sun would\nallow use of a much smaller gamma ray spectrometer system than required at 1 A.U. and\nwould also provide the first opportunity for direct detection of solar neutrons at energies\nof 1-10 MeV. The Mercury orbiter would also be capable of monitoring 1-500 MeV solar\nprotons to search for decay protons from solar neutron flares and to provide automatic\nearly warning of large proton flares which would be a hazard to manned space operations\nnear Earth and beyond.", "date": "1987", "date_type": "published", "publisher": "Proceedings of the 21st International Cosmic Ray Conference", "id_number": "CaltechAUTHORS:20140513-102030255", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140513-102030255", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" } ] }, "other_numbering_system": { "items": [ { "id": "1987-14", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kozyarivsky-V-A", "name": { "family": "Kozyarivsky", "given": "V. A." } } ] }, "primary_object": { "basename": "1987-14.pdf", "url": "https://authors.library.caltech.edu/records/7fx2j-sz494/files/1987-14.pdf" }, "pub_year": "1987", "author_list": "Cooper, J. F.; Metzger, A. E.; et el." }, { "id": "https://authors.library.caltech.edu/records/5em4g-vkf45", "eprint_id": 45697, "eprint_status": "archive", "datestamp": "2023-08-19 19:05:02", "lastmod": "2023-10-26 18:10:31", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Gibner-P-S", "name": { "family": "Gibner", "given": "P. S." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" } ] }, "title": "Response of Ionization Chambers and Cherenkov Counters to Relativistic Ultraheavy Nuclei", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 INR. Provided by the NASA Astrophysics Data System.\n\nE.C. Stone would have been a co-author of this paper were it\nnot for the limitation of 10 papers per author. It is a pleasure to acknowledge the help of the staff at LBL, especially Hank Crawford, Jack Engelage, Mel Flores and\nFred Lothrop. Arlow Becker constructed and installed the Cherenkov detector.\nJohn Epstein constructed the ion chambers and aligned the instrument. The work\nwas supported by NASA grants NAG 8-498,. 500~ 502 and NGR 05-002-160, 24-005-050 and 26-008-001.\n\nPublished - 1987-08.pdf
", "abstract": "We shall report results from a calibration of a set of high-resolution ionization\nchambers and Cherenkov counters at the Lawrence Berkeley Laboratory\nBevalac, in November 1986. We obtained exposures to beams of 26Fe, 57La, 67Ho,\nand 79Au, at several diffyfent energies, ranging from -300 MeV/amu to a maximum\nbetween 1 and 1.6 Ge V lamu. The detectors were basically similar to those used in\nthe HEA0-3 HNE (Binns et al. 1981) and these exposures were intended to calibrate\nthe response of the HNE detectors to UH nuclei in the cosmic radiation.\nFor nuclei of low .atomic number (Z), the response of these detectors scales like\nZ2; however, at high Z this scaling is expected to break down (Ahlen 1980,1982;\nDerrickson et til. 1981).", "date": "1987", "date_type": "published", "publisher": "Proceedings of the 21st International Cosmic Ray Conference", "id_number": "CaltechAUTHORS:20140512-140457870", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140512-140457870", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG 8-498" }, { "agency": "NASA", "grant_number": "NAG 8-500" }, { "agency": "NASA", "grant_number": "NAG 8-502" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NGR 24-005-050" }, { "agency": "NASA", "grant_number": "NGR 26-008-001" } ] }, "other_numbering_system": { "items": [ { "id": "1987-08", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kozyarivsky-V-A", "name": { "family": "Kozyarivsky", "given": "V. A." } } ] }, "primary_object": { "basename": "1987-08.pdf", "url": "https://authors.library.caltech.edu/records/5em4g-vkf45/files/1987-08.pdf" }, "pub_year": "1987", "author_list": "Klarmann, J.; Waddington, C. J.; et el." }, { "id": "https://authors.library.caltech.edu/records/w8xca-q0m46", "eprint_id": 45696, "eprint_status": "archive", "datestamp": "2023-08-19 19:04:58", "lastmod": "2023-10-26 18:10:28", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Cummings-J-R", "name": { "family": "Cummings", "given": "J. R." } }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Gibner-P-S", "name": { "family": "Gibner", "given": "P. S." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Kertzman-M-P", "name": { "family": "Kertzman", "given": "M. P." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } } ] }, "title": "The Energy Dependence of Fragmentation Cross-Sections of Relativistic Heavy Nuclei", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 INR. Provided by the NASA Astrophysics Data System.\n\nWe must thank the staff at LBL, especially Hank Crawford, Jack\nEngelage, Mel Flores and Fred Lothrop for their help. John Epstein constructed the ion\nchambers and alined the instrument while Arlow Becker constructed the Cherenkov chambers.\nThis work was supported by NASA Grants NAG 8-498, -500,-502 and NGR 05-002-160,\n24-005-050 and 26-008-001\n\nPublished - 1987-07.pdf
", "abstract": "We have continued our studies, reported at this conference in the previous\npaper1, on the interactions of heavy energetic nuclei by making a further series of runs at the\nLBL Bevalac. In these runs we used beams of iron, lanthanum and gold nuclei at a number of\ndifferent energies interacting in targets of polyethylene, carbon, aluminum and copper. These\nruns will allow us to study the energy dependence of the cross-sections over the limited range\nof energies available at the Bevalac. Here we report on an initial analysis of the data which\nshows that we achieved greatly improved charge resolution over that seen before. As a result\nwe expect to be able to make determinations of all the cross-sections needed to make\ncomparisons with the earlier data.", "date": "1987", "date_type": "published", "publisher": "Proceedings of the 21st International Cosmic Ray Conference", "id_number": "CaltechAUTHORS:20140512-135723222", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140512-135723222", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG-8-502" }, { "agency": "NASA", "grant_number": "NAG-8-500" }, { "agency": "NASA", "grant_number": "NAG-8-498" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NGR 24-005-050" }, { "agency": "NASA", "grant_number": "NGR 26-008-001" } ] }, "other_numbering_system": { "items": [ { "id": "1987-07", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kozyarivsky-V-A", "name": { "family": "Kozyarivsky", "given": "V. A." } } ] }, "primary_object": { "basename": "1987-07.pdf", "url": "https://authors.library.caltech.edu/records/w8xca-q0m46/files/1987-07.pdf" }, "pub_year": "1987", "author_list": "Waddington, C. J.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/ztj17-47605", "eprint_id": 45698, "eprint_status": "archive", "datestamp": "2023-08-19 19:05:06", "lastmod": "2023-10-26 18:10:33", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Isotope Abundances of Solar Coronal Material Derived from Solar Energetic Particle Measurements", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 INR. Provided by the NASA Astrophysics Data System.\n\nWe are grateful to R. E. Vogt and J. D. Spalding for their\ncontributions to the HIST program. This work was supported in part by NASA grants\nNAG5-722 and NGR 05-001-160.\n\nPublished - 1987-09.pdf
", "abstract": "Coronal isotopic abundances for the elements He, C, N, 0, Ne, and Mg are derived\nfrom previously published measurements of solar energetic particles by first measuring,\nand then correcting for the charge-to-mass-dependent fractionation due to solar flare\nacceleration and propagation processes. The resulting coronal composition generally\nagrees with that of other samples of solar system material, but the previously noted\ndifference between the solar flare and solar wind ^(22)Ne/^(26)Ne ratios remains unresolved.", "date": "1987", "date_type": "published", "publisher": "Proceedings of the 21st International Cosmic Ray Conference", "id_number": "CaltechAUTHORS:20140512-141332323", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140512-141332323", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-722" }, { "agency": "NASA", "grant_number": "NGR 05-001-160" } ] }, "other_numbering_system": { "items": [ { "id": "1987-09", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kozyarivsky-V-A", "name": { "family": "Kozyarivsky", "given": "V. A." } } ] }, "primary_object": { "basename": "1987-09.pdf", "url": "https://authors.library.caltech.edu/records/ztj17-47605/files/1987-09.pdf" }, "pub_year": "1987", "author_list": "Mewaldt, R. A. and Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/86x5k-djt70", "eprint_id": 45695, "eprint_status": "archive", "datestamp": "2023-08-19 19:04:53", "lastmod": "2023-10-26 18:10:26", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Kertzman-M-P", "name": { "family": "Kertzman", "given": "M. P." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Release of Nuclei from Relativistic Nucleus-Nucleus Interactions", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 INR. Provided by the NASA Astrophysics Data System.\n\nSupported in part by NASA grants NAG-8-498, 500, 502 and NGR05-002-160, 24-005-050 and\n26-008-001.\n\nPublished - 1987-06.pdf
", "abstract": "We have examined relativistic nuclei of iron, krypton, xenon, holmium and\ngold, accelerated to maximum rigidity at the LBL Bevalac, interacting with targets of aluminum,\ncarbon and polyethylene. For each projc*:tile and target combination we determined the total and\npartial charge changing cross-sections. From these measurements we have developed a new\nrepresentation of the dependence of the total charge changing cross-sections on beam and target\ncharge. We have also identified simple representations of the variation of the partial cross-sections\nwith the charge of the produced fragments and shown that they are dependent on the charge and\nenergy of the beam.", "date": "1987", "date_type": "published", "publisher": "Proceedings of the 21st International Cosmic Ray Conference", "id_number": "CaltechAUTHORS:20140512-134901454", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140512-134901454", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG-8-498" }, { "agency": "NASA", "grant_number": "NAG-8-500" }, { "agency": "NASA", "grant_number": "NAG-8-502" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NGR 24-005-050" }, { "agency": "NASA", "grant_number": "NGR 26-008-001" } ] }, "other_numbering_system": { "items": [ { "id": "1987-06", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kozyarivsky-V-A", "name": { "family": "Kozyarivsky", "given": "V. A." } } ] }, "primary_object": { "basename": "1987-06.pdf", "url": "https://authors.library.caltech.edu/records/86x5k-djt70/files/1987-06.pdf" }, "pub_year": "1987", "author_list": "Waddington, C. J.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/n9hq9-qzd26", "eprint_id": 45685, "eprint_status": "archive", "datestamp": "2023-08-19 19:04:20", "lastmod": "2023-10-26 18:09:58", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Jones-M-D", "name": { "family": "Jones", "given": "M. D." } }, { "id": "Kamionkowski-M", "name": { "family": "Kamionkowski", "given": "M. P." }, "orcid": "0000-0001-7018-2055" }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } } ] }, "title": "Cosmic-Ray Energy Spectra Between Ten and Several Hundred GeV/amu for Elements from _(18)Ar to _(25)Ni--Results from HEAO-3", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 INR. Provided by the NASA Astrophysics Data System.\n\nThis work was supported by NASA grants NAG 8-498, 500, 502, and NGR 05-002-160,\n24-005-050, and 26-008-001.\n\nPublished - 1987-03.pdf
", "abstract": "Using the relativistic rise of energy loss as a measure of energy, we have\ndetermined the energy dependence of the abundances relative to _(26)Fe of the elements _(18)Ar,\n_(19)K, _(20)Ca, _(21)Sc, _(22)Ti, _(23)V, and _(28)Ni, from 10 to several hundred Ge V /amu. From the energy\ndependence of the observed Ar/Fe and Ca/Fe ratios we infer primary source ratios for these\nelements.", "date": "1987", "date_type": "published", "publisher": "Proceedings of the 21st International Cosmic Ray Conference", "id_number": "CaltechAUTHORS:20140512-120447856", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140512-120447856", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG 8-498" }, { "agency": "NASA", "grant_number": "NAG 8-500" }, { "agency": "NASA", "grant_number": "NAG 8-502" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NGR 24-005-050" }, { "agency": "NASA", "grant_number": "NGR 26-008-001" } ] }, "other_numbering_system": { "items": [ { "id": "1987-03", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kozyarivsky-V-A", "name": { "family": "Kozyarivsky", "given": "V. A." } } ] }, "primary_object": { "basename": "1987-03.pdf", "url": "https://authors.library.caltech.edu/records/n9hq9-qzd26/files/1987-03.pdf" }, "pub_year": "1987", "author_list": "Israel, M. H.; Jones, M. D.; et el." }, { "id": "https://authors.library.caltech.edu/records/2rcjs-xg315", "eprint_id": 45317, "eprint_status": "archive", "datestamp": "2023-08-19 19:03:43", "lastmod": "2024-01-13 15:27:01", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } } ] }, "title": "Measurements of Ultraheavy Cosmic Rays with HEAO-3", "ispublished": "unpub", "full_text_status": "public", "note": "This work was supported in part by NASA contracts NAS 8-27976, 77, 78; by NASA grants NAG 8-498, 500, 502; and by NASA grants NGR 05-002-0160, 24-005-050, 26-008-001.\n\nSubmitted - 1986-02.pdf
", "abstract": "The HEAO-3 Heavy Nuclei Experiment has measured abundances of elements from ^(18)Ar to ^(92)U in the cosmic rays. The results of the ultraheavy elements, those with atomic numbers greater than 30, indicate that the sources of cosmic rays contain a mixture of r-process and s-process material similar to that found in the solar system. This result is at variance with previous indications that the sources are greatly enhanced with freshly synthesized r-process material. Apparent discrepancies between our results and the accepted solar-system abundances have led to a re-examination of data on photospheric abundances of Ge and Pb, resulting in suggested reductions in their values.", "date": "1987", "date_type": "published", "publisher": "NASA", "id_number": "CaltechAUTHORS:20140429-140516645", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140429-140516645", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS 8-27976" }, { "agency": "NASA", "grant_number": "NAS 8-27977" }, { "agency": "NASA", "grant_number": "NAS 8-27978" }, { "agency": "NASA", "grant_number": "NAG 8-498" }, { "agency": "NASA", "grant_number": "NAG 8-500" }, { "agency": "NASA", "grant_number": "NAG 8-502" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NGR 24-005-050" }, { "agency": "NASA", "grant_number": "NGR 26-008-001" } ] }, "other_numbering_system": { "items": [ { "id": "1986-02", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Ramaty-R", "name": { "family": "Ramaty", "given": "Reuven" } }, { "id": "Cline-T-L", "name": { "family": "Cline", "given": "Thomas L." } }, { "id": "Ormes-J-F", "name": { "family": "Ormes", "given": "Jonathan F." } } ] }, "primary_object": { "basename": "1986-02.pdf", "url": "https://authors.library.caltech.edu/records/2rcjs-xg315/files/1986-02.pdf" }, "pub_year": "1987", "author_list": "Binns, W. R.; Israel, M. H.; et el." }, { "id": "https://authors.library.caltech.edu/records/kwhkk-xyy92", "eprint_id": 45716, "eprint_status": "archive", "datestamp": "2023-08-19 19:05:43", "lastmod": "2023-10-26 18:11:13", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Cosmic Ray Studies Out of the Ecliptic", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 INR. Provided by the NASA Astrophysics Data System.\n\nPublished - 1987-20.pdf
", "abstract": "Since early 1985, negative latitudinal gradients in the fluxes of anomalous and\ngalactic cosmic rays have been observed by Voyager 1, which is now -28\u00b0 above the\necliptic. The latitudinal gradients are larger than the radial gradients, indicating that\nparticles are streaming into the heliosphere preferentially at low latitudes during this\nsolar minimum. The sign of the latitudinal gradients appear to have reversed since the\nlast solar minimum, consistent with the presence of gradient and curvature drifts.", "date": "1987", "date_type": "published", "publisher": "Proceedings of the 21st International Cosmic Ray Conference", "id_number": "CaltechAUTHORS:20140513-104149998", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140513-104149998", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" } ] }, "other_numbering_system": { "items": [ { "id": "1987-20", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kozyarivsky-V-A", "name": { "family": "Kozyarivsky", "given": "V. A." } } ] }, "primary_object": { "basename": "1987-20.pdf", "url": "https://authors.library.caltech.edu/records/kwhkk-xyy92/files/1987-20.pdf" }, "pub_year": "1987", "author_list": "Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/yxhjz-nd063", "eprint_id": 45709, "eprint_status": "archive", "datestamp": "2023-08-19 19:05:20", "lastmod": "2023-10-26 18:10:56", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Energy Spectra of Anomalous Cosmic-Ray Oxygen During 1977-1987", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 INR. Provided by the NASA Astrophysics Data System.\n\nWe appreciate the contributions of W. R. Webber, who could\nnot be a co-author on this paper because of conference limitations. We also are grateful\nto R. E. Vogt for his contributions during his tenure as Principal Investigator for the\nVoyager CRS. We also appreciate the contributions of the other Voyager CRS team\nmembers at Caltech and the Goddard Space Flight Center. This work was supported in\npart by NASA under contract NAS 7-918 and grant NGR 05-002-160.\n\nPublished - 1989-12.pdf
", "abstract": "We have previously reported that the energy of the peak intensity of the spectrum of\nanomalous cosmic-ray oxygen moved upwards by a factor of -2 near the time of the\nreversal of the solar magnetic field in 1980. An energy shift which persists into the next\nsolar minimum period would agree with a key prediction of a theory of the acceleration\nand propagation of the anomalous component by Jokipii. That model also predicts distinctly\ndifferent spectral shapes in the two halves of the solar magnetic cycle. Although\nwe cannot yet rule out the possibility of a long-term hysteresis in the recovery of the\nlow-rigidity particles, our spectral measurements through late 1986 agree remarkably well\nwith these predictions.", "date": "1987", "date_type": "published", "publisher": "Proceedings of the 21st International Cosmic Ray Conference", "id_number": "CaltechAUTHORS:20140513-100423829", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140513-100423829", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS 7-918" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1987-12", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kozyarivsky-V-A", "name": { "family": "Kozyarivsky", "given": "V. A." } } ] }, "primary_object": { "basename": "1989-12.pdf", "url": "https://authors.library.caltech.edu/records/yxhjz-nd063/files/1989-12.pdf" }, "pub_year": "1987", "author_list": "Cummings, A. C. and Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/0hefs-yrj24", "eprint_id": 45693, "eprint_status": "archive", "datestamp": "2023-08-19 19:04:49", "lastmod": "2023-10-26 18:10:22", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Gibner-P-S", "name": { "family": "Gibner", "given": "P. S." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Kertzman-M-P", "name": { "family": "Kertzman", "given": "M. P." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Newport-B-J", "name": { "family": "Newport", "given": "B. J." } } ] }, "title": "The Abundances of Ultraheavy Elements in the Cosmic Radiation", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 INR. Provided by the NASA Astrophysics Data System.\n\nThis research was supported in part by NASA under grants\nNAG 8-498, 500, and 502 and NCR 05-002-160, 24-005,050, and 26-008-001.\n\nPublished - 1987-05.pdf
", "abstract": "Analysis of a new, higher resolution data set from the Heavy Nuclei Experiment on\nthe HEA0-3 spacecraft has yielded the cosmic ray abundances relative to iron of oddeven\nelement pairs with atomic number, Z, in the range 33\u2264Z\u226460. The abundances are\nconsistent with a solar-system source provided an allowance is made for a source\nfraetionation based on first ionization potential (FIP). However, extending this analysis\u00b7\nto element groups with Z>60, we find enhancements of the Pt group (74\u2264Z\u226480)\nabundance relative to the solar system and a corresponding increase in the largely\nsecondary nuclei in the range 62\u2264Z\u226473, in agreement with recent Ariel-6 results. These\nabundances suggest an enhancement of the r-process contribution to the source of the\nZ > 60 nuclei.", "date": "1987", "date_type": "published", "publisher": "Proceedings of the 21st International Cosmic Ray Conference", "id_number": "CaltechAUTHORS:20140512-133126620", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140512-133126620", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG 8-498" }, { "agency": "NASA", "grant_number": "NAG 8-500" }, { "agency": "NASA", "grant_number": "NAG 8-502" }, { "agency": "NASA", "grant_number": "NCR 05-002-160" }, { "agency": "NASA", "grant_number": "NCR 24-005-005" }, { "agency": "NASA", "grant_number": "NCR 26-008-001" } ] }, "other_numbering_system": { "items": [ { "id": "1987-05", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kozyarivsky-V-A", "name": { "family": "Kozyarivsky", "given": "V. A." } } ] }, "primary_object": { "basename": "1987-05.pdf", "url": "https://authors.library.caltech.edu/records/0hefs-yrj24/files/1987-05.pdf" }, "pub_year": "1987", "author_list": "Stone, E. C.; Waddington, C. J.; et el." }, { "id": "https://authors.library.caltech.edu/records/q6s7w-cky75", "eprint_id": 45714, "eprint_status": "archive", "datestamp": "2023-08-19 19:05:34", "lastmod": "2023-10-26 18:11:09", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Althouse-W-E", "name": { "family": "Althouse", "given": "W. E." } }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. R." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Finger-M-H", "name": { "family": "Finger", "given": "M." } }, { "id": "Palmer-D-M", "name": { "family": "Palmer", "given": "D. M." } }, { "id": "Prince-T-A", "name": { "family": "Prince", "given": "T. A." }, "orcid": "0000-0002-8850-3627" }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Starr-C-H", "name": { "family": "Starr", "given": "C. H." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "First Flight of a New Balloon-Borne Gamma-Ray Imaging Telescope", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 INR. Provided by the NASA Astrophysics Data System.\n\nWe thank R. E. Vogt for his numerous contributions to\nthe GRIP project. We also thank the staff of Caltech's Space Radiation Laboratory\nand Central Engineering Services and the personnel of the National Scientific Balloon\nFacility for their excellent technical support. This work was supported in part by\nNASA grant NGR-05-002-160.\n\nPublished - 1987-15.pdf
", "abstract": "The first flight of a new balloon-borne gamma-ray imaging payload (GRIP)\noccurred on Oct. 15 and 16, 1986 from Palestine, Texas. Observations included the\nquasar 3C273, the galactic center, and the Crab and Cygnus regions. We discuss the\ninstrument performance and present images of the Crab and Cygnus regions with 0.6\ndegree resolution over a 20 degree field of view.", "date": "1987", "date_type": "published", "publisher": "Proceedings of the 21st International Cosmic Ray Conference", "id_number": "CaltechAUTHORS:20140513-102837578", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140513-102837578", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NGR-05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1987-15", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Kozyarivsky-V-A", "name": { "family": "Kozyarivsky", "given": "V. A." } } ] }, "primary_object": { "basename": "1987-15.pdf", "url": "https://authors.library.caltech.edu/records/q6s7w-cky75/files/1987-15.pdf" }, "pub_year": "1987", "author_list": "Althouse, W. E.; Cook, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/s6nzh-dg568", "eprint_id": 45562, "eprint_status": "archive", "datestamp": "2023-08-19 18:11:57", "lastmod": "2023-10-26 18:04:50", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hurford-G-J", "name": { "family": "Hurford", "given": "G. J." } }, { "id": "Megeath-S-T", "name": { "family": "Megeath", "given": "S. Thomas" }, "orcid": "0000-0001-7629-3573" }, { "id": "Palmer-D", "name": { "family": "Palmer", "given": "David" } }, { "id": "Prince-T-A", "name": { "family": "Prince", "given": "Thomas A." }, "orcid": "0000-0002-8850-3627" } ] }, "title": "Statistical Limits of Fourier Transform Imaging in the Gamma-ray Energy Range", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1986 Optical Society of America.\n\nPublished - pgs__45-48.pdf
", "abstract": "Recent advances in imaging techniques and position-sensitive gamma-ray detectors\nhave made feasible hard x-ray and gamma-ray telescopes with arc-second resolution [ 1].\nAbove an energy of 100 keV, past instrumentation has been limited to a typical angular\nresolution of a few degrees. A gamma-ray imaging device with 1 arc-second resolution\nwould be a dramatic improvement over conventional, non-imaging instrumentation\nand have substantial new capabilities for observation of astrophysical gamma-ray sources.\nThe arc-second gamma-ray imager is based on the Fourier transform imaging technique\n[2]. We briefly describe Fourier transform imaging and its application to hard x-ray\nand gamma-ray imaging. This description is followed by an analysis of Fourier transform\nimaging in the statistics limited regime. Computer simulations and laboratory\ndemonstrations of practical gamma-ray imaging systems are presented.", "date": "1986", "date_type": "published", "publisher": "Optical Society of America", "place_of_pub": "Washington, DC", "pagerange": "45-48", "id_number": "CaltechAUTHORS:20140507-100856032", "isbn": "9780936659053", "book_title": "Technical digest : summaries of papers presented at the Quantum-Limited Imaging & Image Processing Topical Meeting, March 31-April 2, 1986, Honolulu, Hawaii", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140507-100856032", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1986-15", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "pgs__45-48.pdf", "url": "https://authors.library.caltech.edu/records/s6nzh-dg568/files/pgs__45-48.pdf" }, "pub_year": "1986", "author_list": "Hurford, G. J.; Megeath, S. Thomas; et el." }, { "id": "https://authors.library.caltech.edu/records/c2shx-aqz16", "eprint_id": 45345, "eprint_status": "archive", "datestamp": "2023-08-19 18:11:53", "lastmod": "2023-10-26 17:57:02", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "Measurements of Cosmic Ray Isotopes with a Super-Conducting Magnet Facility", "ispublished": "unpub", "full_text_status": "public", "note": "I thank R. Golden and W. R. Webber for helpful discussions. This work was supported in part by NASA under grant NGR 05-002-160.\n\nPublished - 1986-13.pdf
", "abstract": "A method to resolve cosmic ray isotopes with a magnet-Cerenkov system is analyzed, with emphasis on applications to a Super-Conducting Magnet Facility for the Space Station.", "date": "1986", "date_type": "published", "publisher": "Washington University in St. Louis", "id_number": "CaltechAUTHORS:20140430-092135151", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140430-092135151", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1986-13", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } } ] }, "primary_object": { "basename": "1986-13.pdf", "url": "https://authors.library.caltech.edu/records/c2shx-aqz16/files/1986-13.pdf" }, "pub_year": "1986", "author_list": "Mewaldt, R. A." }, { "id": "https://authors.library.caltech.edu/records/sq0qz-17527", "eprint_id": 45347, "eprint_status": "archive", "datestamp": "2023-08-22 04:36:32", "lastmod": "2024-01-13 15:27:03", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Johnson-R-E", "name": { "family": "Johnson", "given": "R. E." } }, { "id": "Cooper-J-F", "name": { "family": "Cooper", "given": "J. F." } }, { "id": "Lanzerotti-L-J", "name": { "family": "Lanzerotti", "given": "L. J." } } ] }, "title": "Radiation Formation of a Non-Volatile Crust", "ispublished": "unpub", "full_text_status": "public", "keywords": "comet crust; radiation modification", "note": "Work supported by the NSF Astronomy Division.\n\nAccepted Version - 1986-14.pdf
", "abstract": "Ion irradiation of the outer meters of a cometary surface produces new molecular species in the solid state. Because of the vacuum interfaces these segregate in an irreversible way into a non-volatile residue and new very volatile species, which are lost directly or lost when the comet enters the inner solar system. It is, therefore, likely that a comet exposed to background radiations in the Oort cloud would obtain an outer web of nonvolatile material which will lead to the formation of a substantial 'crust' (~10^2 gm/cm^2). Except for fizzures and break-off of pieces due to warming of subsurface gases, this mantel should be continuously hardened for a periodic comet due, primarily, to thermal processing. There will also be active regions which were shaded from the cosmic ray radiation.", "date": "1986", "date_type": "published", "publisher": "European Space Agency", "id_number": "CaltechAUTHORS:20140430-092533314", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140430-092533314", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF Astronomy Division" } ] }, "other_numbering_system": { "items": [ { "id": "1986-14", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Battrick-B", "name": { "family": "Battrick", "given": "B." } }, { "id": "Rolfe-E-J", "name": { "family": "Rolfe", "given": "E. J." } }, { "id": "Reinhard-R", "name": { "family": "Reinhard", "given": "R." } } ] }, "primary_object": { "basename": "1986-14.pdf", "url": "https://authors.library.caltech.edu/records/sq0qz-17527/files/1986-14.pdf" }, "pub_year": "1986", "author_list": "Johnson, R. E.; Cooper, J. F.; et el." }, { "id": "https://authors.library.caltech.edu/records/a8f6g-tg942", "eprint_id": 45430, "eprint_status": "archive", "datestamp": "2023-08-19 17:55:10", "lastmod": "2023-10-26 17:59:09", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Newport-B-J", "name": { "family": "Newport", "given": "B. J." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Fixsen-D-J", "name": { "family": "Fixsen", "given": "D. J." } }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Grimm-G", "name": { "family": "Grimm", "given": "G." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } } ] }, "title": "The Response of Ionization Chambers to Relativistic Heavy Nuclei", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1985 NASA/STI. Provided by the NASA Astrophysics Data System.\n\nThe success of this calibration was largely due to the efforts of the staff at LBL, especially\nHank Crawford, Mel Flores, Peter Lindstrom, and Fred Lothrop. John Epstein\nprovided invaluable assistance in constructing and aligning the instrument. This work\nwas supported in part by NASA contracts NAS 8-27976, 77, 78, and grants NAG 8-498,\n500, 502 and NGR 05-002-160, 24-005-050, 26-008-001.\n\nPublished - 1985-17.pdf
", "abstract": "As part of a recent calibration at the LBL Bevalac for the Heavy\nNuclei Experiment on HEAO-3, we have compared the response of a set\nof laboratory ionization chambers to beams of _(26)Fe, _(36)Kr, _(54)Xe, _(67)Ho, and _(79)Au nuclei at maximum energies ranging from 1666 MeV/amu for Fe to 1049 MeV /amu for Au. The response of these chambers shows a significant deviation from the expected energy dependence, but only a slight deviation from Z^2 scaling.", "date": "1985-08", "date_type": "published", "publisher": "Goddard Space Flight Center", "id_number": "CaltechAUTHORS:20140501-131651042", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140501-131651042", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS 8-27976" }, { "agency": "NASA", "grant_number": "NAS 8-27977" }, { "agency": "NASA", "grant_number": "NAS 8-27978" }, { "agency": "NASA", "grant_number": "NAG 8-498" }, { "agency": "NASA", "grant_number": "NAG 8-500" }, { "agency": "NASA", "grant_number": "NAG 8-502" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NGR 24-005-050" }, { "agency": "NASA", "grant_number": "NGR 26-008-001" } ] }, "other_numbering_system": { "items": [ { "id": "1985-17", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Jones-F-C", "name": { "family": "Jones", "given": "F. C." } } ] }, "primary_object": { "basename": "1985-17.pdf", "url": "https://authors.library.caltech.edu/records/a8f6g-tg942/files/1985-17.pdf" }, "pub_year": "1985", "author_list": "Newport, B. J.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/t612g-d1v77", "eprint_id": 45369, "eprint_status": "archive", "datestamp": "2023-08-19 17:54:52", "lastmod": "2023-10-26 17:57:34", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Buffington-A", "name": { "family": "Buffington", "given": "A." } }, { "id": "Christian-E-C", "name": { "family": "Christian", "given": "E. C." } }, { "id": "Grove-J-E", "name": { "family": "Grove", "given": "J. E." } }, { "id": "Lau-K-H", "name": { "family": "Lau", "given": "K. H." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Initial Results from the Caltech/DSRI Balloon-Borne Isotope Experiment", "ispublished": "unpub", "full_text_status": "public", "keywords": "Abundance, Balloon Sounding, Cerenkov Radiation, Cosmic Rays, Isotopes, Balloon-Borne Instruments, Calibrating, Cerenkov Counters, Resolution, Spectroscopic Analysis, Spectroscopic Telescopes", "note": "\u00a9 1985 NASA/STI. Provided by the NASA Astrophysics Data System.\n\nThis work was partially supported by NASA, under grant NGR 05-006-160.\n\nPublished - 1985-08.pdf
", "abstract": "The Caltech/DSRI balloonborne High Energy Isotope Spectrometer Telescope (HEIST) was flown successfully from Palestine, Texas on 14 May, 1984. The experiment was designed to measure cosmic ray isotopic abundances from neon through iron, with incident particle energies from ~1.5 to 2.2 GeV/nucleon depending on the element. During ~38 hours at float altitude, > 10^5 events were recorded with Z \u2265 6 and incident energies \u2273 1.5 GeV/nucleon. We present results from the ongoing data analysis associated with both the preflight Bevalac calibration and the flight data.", "date": "1985-08", "date_type": "published", "publisher": "Goddard Space Flight Center", "id_number": "CaltechAUTHORS:20140430-141001959", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140430-141001959", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NGR 05-006-160" } ] }, "other_numbering_system": { "items": [ { "id": "1985-08", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Jones-F-C", "name": { "family": "Jones", "given": "F. C." } } ] }, "primary_object": { "basename": "1985-08.pdf", "url": "https://authors.library.caltech.edu/records/t612g-d1v77/files/1985-08.pdf" }, "pub_year": "1985", "author_list": "Schindler, S. M.; Buffington, A.; et el." }, { "id": "https://authors.library.caltech.edu/records/cvnc2-ssv38", "eprint_id": 45426, "eprint_status": "archive", "datestamp": "2023-08-19 17:55:05", "lastmod": "2023-10-26 17:59:07", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Brewster-N-R", "name": { "family": "Brewster", "given": "N. R." } }, { "id": "Fixsen-D-J", "name": { "family": "Fixsen", "given": "D. J." } }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Newport-B-J", "name": { "family": "Newport", "given": "B. J." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Lead, Platinum, and Other Heavy Elements in the Primary Cosmic Radiation--HEAO-3 Results", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1985 NASA/STI. Provided by the NASA Astrophysical Data System.\n\nThe research was supported in part by NASA under\ngrants NAG 8-498, 500, 502, and NGR 05-002-160, 24-005-050, and 26-008-\n01.\n\nPublished - 1985-19.pdf
", "abstract": "This paper reports an observation of the abundances of\ncosmic-ray lead and platinum-group nuclei using data from the HEAO-3\nHeavy Nuclei Experiment (HNE) which consisted of ion chambers mounted on\nboth sides of a plastic Cherenkov counter (Binns et al., 1981).\nPreviously we have reported on a search for actinide nuclei, Z > 88\n(Binns, et al. 1982a). Further analysis with more stringent selections,\ninclusion of additional data, and a calibration at the LBL Bevalac, have\nallowed us to obtain the abundance ratio of lead and the platinum group\nof elements for particles that had a cutoff rigidity R_c > 5 GV.", "date": "1985-08", "date_type": "published", "publisher": "Goddard Space Flight Center", "id_number": "CaltechAUTHORS:20140501-122628758", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140501-122628758", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG 8-498" }, { "agency": "NASA", "grant_number": "NAG 8-500" }, { "agency": "NASA", "grant_number": "NAG 8-502" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NGR 24-005-050" }, { "agency": "NASA", "grant_number": "NGR 26-008-001" } ] }, "other_numbering_system": { "items": [ { "id": "1985-19", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Jones-F-C", "name": { "family": "Jones", "given": "F. C." } } ] }, "primary_object": { "basename": "1985-19.pdf", "url": "https://authors.library.caltech.edu/records/cvnc2-ssv38/files/1985-19.pdf" }, "pub_year": "1985", "author_list": "Waddington, C. J.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/pnjpq-s4p49", "eprint_id": 45425, "eprint_status": "archive", "datestamp": "2023-08-19 17:55:00", "lastmod": "2023-10-26 17:59:05", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Kertzman-M-P", "name": { "family": "Kertzman", "given": "M. P." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Newport-B-J", "name": { "family": "Newport", "given": "B. J." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" } ] }, "title": "Interactions of Heavy Nuclei, Kr, Xe and Ho, in Light Targets", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1985 NASA/STI. Provided by the NASA Astrophysics Data System.\n\nWe are grateful to the staff of the LBL Bevalac.\nThis work was supported in part by NASA under grants NAG 8-498, 500, 502, and, 24-005-050, and 26-008-001.\n\nPublished - 1985-20.pdf
", "abstract": "Over the past few years, we have been analyzing the\nHEAO-3 measurements of the abundances of ultra-heavy cosmic ray nuclei\n(Z>26) at earth. In order to interpret these abundances in terms of a\nsource composition, allowance must be made for the propagation of the\nnuclei in the interstellar medium. Vital to any calculation of the\npropagation is a knowledge of the total and partial interaction cross\nsections for these heavy nuclei on hydrogen. Until recently, data on\nsuch reactions have been scarce, and we have relied on the semiempirical\nformalism of Silberberg and Tsao to predict the partial cross\nsections. However, now that relativistic heavy ion beams are available\nat the LBL Bevalac, some of the cross sections of interest can be\nmeasured at energies close to those of the cosmic ray nuclei being\nobserved.", "date": "1985-08", "date_type": "published", "publisher": "Goddard Space Flight Center", "id_number": "CaltechAUTHORS:20140501-121609969", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140501-121609969", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG 8-498" }, { "agency": "NASA", "grant_number": "NAG 8-500" }, { "agency": "NASA", "grant_number": "NAG 8-502" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NGR 24-005-050" }, { "agency": "NASA", "grant_number": "NGR 26-008-001" } ] }, "other_numbering_system": { "items": [ { "id": "1985-20", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Jones-F-C", "name": { "family": "Jones", "given": "F. C." } } ] }, "primary_object": { "basename": "1985-20.pdf", "url": "https://authors.library.caltech.edu/records/pnjpq-s4p49/files/1985-20.pdf" }, "pub_year": "1985", "author_list": "Kertzman, M. P.; Klarmann, J.; et el." }, { "id": "https://authors.library.caltech.edu/records/2f4qp-qw144", "eprint_id": 45370, "eprint_status": "archive", "datestamp": "2023-08-19 17:54:56", "lastmod": "2023-10-26 17:57:36", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Margolis-S-H", "name": { "family": "Margolis", "given": "S. H." } }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Brewster-N-R", "name": { "family": "Brewster", "given": "N. R." } }, { "id": "Fixsen-D-J", "name": { "family": "Fixsen", "given": "D. J." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } } ] }, "title": "Abundances of 'secondary' elements among the ultraheavy cosmic rays: Results from HEAO-3", "ispublished": "unpub", "full_text_status": "public", "keywords": "Abundance, Cerenkov Radiation, Cosmic Rays, Heavy Nuclei, Isotopes, Cerenkov Counters, Heao 3, Resolution, Spallation, Wave Propagation", "note": "\u00a9 1985 INSDOC. Provided by the NASA Astrophysics Data System.\n\nThis work was supported in part by NASA under contracts NAS8-27976,77,78 and grants NGR 05-002-160, 24-005-050, 26-008-001, and NAG8-448.\n\nPublished - 1985-21.pdf
", "abstract": "The HEAO-3 Heavy Nuclei Experiment has measured elemental\nabundances of ultraheavy cosmic rays near earth. The\nelements with atomic number (Z) in the intervals 44\u2264Z\u226448 and\n62\u2264Z\u226474 arriving at earth are expected to have significant\nsecondary components. However, their source abundances are\nunlikely to be low enough to warrant treating them as pure\nsecondaries. Our results are consistent with solar system\nabundances modified for first ionization potential with possibly\nsome enhancement of tho r to s ratio.", "date": "1985-08", "date_type": "published", "publisher": "Goddard Space Flight Center", "id_number": "CaltechAUTHORS:20140430-142415830", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140430-142415830", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS8-27976" }, { "agency": "NASA", "grant_number": "NAS8-27977" }, { "agency": "NASA", "grant_number": "NAS8-27978" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NGR 24-005-050" }, { "agency": "NASA", "grant_number": "NGR 26-008-001" }, { "agency": "NASA", "grant_number": "NAG8-448" } ] }, "other_numbering_system": { "items": [ { "id": "1985-21", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Jones-F-C", "name": { "family": "Jones", "given": "F. C." } } ] }, "primary_object": { "basename": "1985-21.pdf", "url": "https://authors.library.caltech.edu/records/2f4qp-qw144/files/1985-21.pdf" }, "pub_year": "1985", "author_list": "Klarmann, J.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/67b9n-sp881", "eprint_id": 45341, "eprint_status": "archive", "datestamp": "2023-08-19 17:54:39", "lastmod": "2023-10-26 17:56:53", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Breneman-H-H", "name": { "family": "Breneman", "given": "H." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Precision Measurements of Solar Energetic Particle\n Elemental Composition", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1985 NASA/STI. Provided by the NASA Astrophysics Data System.\n\nPublished - 1985-07.pdf
", "abstract": "Using data from the Cosmic Ray Subsystem aboard the Voyager 1 and 2 spacecraft (Stone et al., 1977), the authors have determined solar energetic particle abundances or upper limits for all elements with 3 \u2264 Z \u2264 30 from a combined set of 10 solar flares during the 1977 - 1982 time period. Statistically meaningful abundances have been determined for the first time for several rare elements including P, Cl, K, Ti and Mn, while the precision of the mean abundances for the more abundant elements has been improved by typically a factor of ~3 over previously reported values. When compared to solar photospheric spectroscopic abundances, these\nnew SEP abundances more clearly exhibit the step-function dependence on first\nionization potential previously reported by Cook et al. (1979, 1984) and Meyer\n(1981, 1985).", "date": "1985-08", "date_type": "published", "publisher": "Goddard Space Flight Center", "id_number": "CaltechAUTHORS:20140430-090519546", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140430-090519546", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1985-07", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Jones-F-C", "name": { "family": "Jones", "given": "F. C." } } ] }, "primary_object": { "basename": "1985-07.pdf", "url": "https://authors.library.caltech.edu/records/67b9n-sp881/files/1985-07.pdf" }, "pub_year": "1985", "author_list": "Breneman, H. and Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/1pcaw-pmn18", "eprint_id": 45432, "eprint_status": "archive", "datestamp": "2023-08-19 17:55:14", "lastmod": "2023-10-26 17:59:15", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Radial and Latitudinal Gradients of Anomalous Oxygen During 1977-1985", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1985 NASA/STI. Provided by the NASA Astrophysics Data System.\n\nWe are grateful to R. E. Vogt and other CRS team members consisting of \u00b7\nscientists and engineers at the California Institute of Technology, the Goddard Space Flight\nCenter, the University of Arizona, and the University of New Hampshire. This work was supported\nin part by NASA under contract NAS 7-918 and grant NGR 05-002-160.\n\nPublished - 1985-11.pdf
", "abstract": "We find that the radial gradient of anomalous O remains constant during 1977-85\nat ~10-15%/AU although the intensity changes by more than a factor of 100.\nThese results can be used to deduce that most of the modulation of the intensities\nof these particles is occurring beyond 27 AU. We also find evidence for a latitudinal\ngradient of ~+3%/degree at low energies (7.1-10.6MeV/nuc).", "date": "1985-08", "date_type": "published", "publisher": "Goddard Space Flight Center", "id_number": "CaltechAUTHORS:20140501-132751835", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140501-132751835", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NAS 7-918" } ] }, "other_numbering_system": { "items": [ { "id": "1985-11", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Jones-F-C", "name": { "family": "Jones", "given": "F. C." } } ] }, "primary_object": { "basename": "1985-11.pdf", "url": "https://authors.library.caltech.edu/records/1pcaw-pmn18/files/1985-11.pdf" }, "pub_year": "1985", "author_list": "Webber, W. R.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/682kc-1h356", "eprint_id": 45346, "eprint_status": "archive", "datestamp": "2023-08-19 17:54:43", "lastmod": "2023-10-26 17:57:04", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Margolis-S-H", "name": { "family": "Margolis", "given": "S. H." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } } ] }, "title": "Implications of Source Abundances of Ultraheavy Cosmic Rays", "ispublished": "unpub", "full_text_status": "public", "keywords": "Abundance, Correlation, Cosmic Rays, Galactic Radiation, Ionization Potentials, Radiation Sources, Solar System, Carbonaceous Meteorites, Chondrites, High Temperature Plasmas, Interstellar Matter, Mathematical Models", "note": "\u00a9 1985 NASA/STI. Provided by the NASA Astrophysics Data System.\n\nPublished - 1985-22.pdf
", "abstract": "The ratio of cosmic ray source abundance to solar-system abundance was examined for individual elements. Correlations of these ratios with first-ionization potential (FIP) and the expected mass-to-charge ratio (A/Q) of the elements in a million-degree plasma are analyzed. The FIP correlation was examined and it is shown that the correlation is affected by the choice of C2 or C1 chondritic meteorites as the solar-system standard for comparison. An A/Q correlation is suggested as a consequence of the shock acceleration model in the hot interstellar medium. The correlations are presented.", "date": "1985-08", "date_type": "published", "publisher": "Goddard Space Flight Center", "id_number": "CaltechAUTHORS:20140430-092247563", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140430-092247563", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1985-22", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Jones-F-C", "name": { "family": "Jones", "given": "F. C." } } ] }, "primary_object": { "basename": "1985-22.pdf", "url": "https://authors.library.caltech.edu/records/682kc-1h356/files/1985-22.pdf" }, "pub_year": "1985", "author_list": "Binns, W. R.; Garrard, T. L.; et el." }, { "id": "https://authors.library.caltech.edu/records/4jfte-e3344", "eprint_id": 45367, "eprint_status": "archive", "datestamp": "2023-08-19 17:54:48", "lastmod": "2023-10-26 17:57:32", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "Cosmic Ray ^3He Measurements", "ispublished": "unpub", "full_text_status": "public", "keywords": "Cosmic Rays, Helium Isotopes, Antiprotons, Comparison, Computation, International Sun Earth Explorer 3, Interstellar Radiation, Ratios, Spectrometers, Telescopes", "note": "\u00a9 1985 NASA/STI. Provided by the NASA Astrophysics Data System.\n\nI thank Dr. J. D. Spalding for performing most of the HIST ^3He data analysis, Drs. M. Garcia-Munoz, C. J. Waddington, W. R. Webber, and M. E. Wiedenbeck for\ndiscussions of ^3He measurements, and Dr. E. C. Stone for helpful comments. This work was\nsupported by NASA under grant NGR 05-002-160 and contracts NAS5-28441 and NAS5-28449.\n\nPublished - 1985-05-1.pdf
", "abstract": "Cosmic ray ^3He/^4He observations, including a new measurement at ~65 MeV/nucleon from ISEE-3, are compared with interstellar propagation and solar\nmodulation models in an effort to understand the origin of cosmic ray He nuclei.", "date": "1985-08", "date_type": "published", "publisher": "Goddard Space Flight Center", "id_number": "CaltechAUTHORS:20140430-140059539", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140430-140059539", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-28449" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NAS5-28441" } ] }, "other_numbering_system": { "items": [ { "id": "1985-05", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Jones-F-C", "name": { "family": "Jones", "given": "F. C." } } ] }, "primary_object": { "basename": "1985-05-1.pdf", "url": "https://authors.library.caltech.edu/records/4jfte-e3344/files/1985-05-1.pdf" }, "pub_year": "1985", "author_list": "Mewaldt, R. A." }, { "id": "https://authors.library.caltech.edu/records/stges-1ph31", "eprint_id": 45453, "eprint_status": "archive", "datestamp": "2023-08-19 17:24:59", "lastmod": "2023-10-26 17:59:54", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Breneman-H-H", "name": { "family": "Breneman", "given": "H." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Solar Coronal and Photospheric Abundances from Solar Energetic Particle Measurements", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 NASA/STI. Provided by the NASA Astrophysics Data-System.\n\nThis work has been supported in part by the National Aeronautics and Space\nAdministration under contract NAS7-916 and grant NGR 05-002-160.\n\nPublished - 1985-15.pdf
", "abstract": "Solar energetic particle (SEP) elemental abundance data from the Cosmic Ray\nSubsystem (CRS) aboard the Voyager 1 and 2 spacecraft (Breneman and Stone\n1985} are used to derive unfractionated coronal and photospheric abundances for\nelements with 3 < Z < 30. We find that the ionic charge-to-mass ratio (Q/M) is the\nprincipal organizing parameter tor the fractionation of SEPs by acceleration and\npropagation processes and for fl.are-to-fl.are variability, making possible a single parameter\nQ/M-dependent correction to the average SEP abundances to obtain\nunfractionated coronal abundances. A further correction based on first ionization\npotential allows the determination of unfractionated photospheric abundances.", "date": "1985", "date_type": "published", "publisher": "Goddard Space Flight Center", "id_number": "CaltechAUTHORS:20140501-202056002", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140501-202056002", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-916" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1985-15", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Jones-F-C", "name": { "family": "Jones", "given": "F. C." } } ] }, "primary_object": { "basename": "1985-15.pdf", "url": "https://authors.library.caltech.edu/records/stges-1ph31/files/1985-15.pdf" }, "pub_year": "1985", "author_list": "Breneman, H. and Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/csg22-7z285", "eprint_id": 45435, "eprint_status": "archive", "datestamp": "2023-08-19 17:24:28", "lastmod": "2023-10-26 17:59:21", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Jones-M-D", "name": { "family": "Jones", "given": "Michael D." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" } ] }, "title": "Energy Spectra of Elements with 18 \u2264 Z \u2264 28 Between 10 and 300 GeV/amu", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9NASA/STI. Provided by the NASA Astrophysics Data System.\n\nThis work was supported in part by NASA grants NAG 8-498,\n500, 502, and NCR 05-002-160, 24-005-050, and 26-008-001.\n\nPublished - 1985-18.pdf
", "abstract": "The HEAO-3 Heavy Nuclei Experiment (Binns, et al., 1981) is\ncomposed of ionization chambers above and below a plastic Cherenkov counter. We\nhave measured the energy dependence of the abundances of elements with atomic\nnumber, Z, between 18 and 28 at very high energies where they are rare and thus need\nthe large area x time of this experiment. We extend the measurements of the Danish French\nHEAO-3 experiment (Englemann, et al., 19S3) to higher energies, using the\nrelativistic rise of ionization signal as a measure of energy, and determine source\nabundances for Ar and Ca.", "date": "1985", "date_type": "published", "publisher": "Goddard Space Flight Center", "id_number": "CaltechAUTHORS:20140501-134843543", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140501-134843543", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG 8-498" }, { "agency": "NASA", "grant_number": "NAG 8-500" }, { "agency": "NASA", "grant_number": "NAG 8-502" }, { "agency": "NASA", "grant_number": "NCR 05-002-16" }, { "agency": "NASA", "grant_number": "NCR 24-005-050" }, { "agency": "NASA", "grant_number": "NCR 26-008-001" } ] }, "other_numbering_system": { "items": [ { "id": "1985-18", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Jones-F-C", "name": { "family": "Jones", "given": "F. C." } } ] }, "primary_object": { "basename": "1985-18.pdf", "url": "https://authors.library.caltech.edu/records/csg22-7z285/files/1985-18.pdf" }, "pub_year": "1985", "author_list": "Jones, Michael D.; Klarmann, J.; et el." }, { "id": "https://authors.library.caltech.edu/records/ytfp4-r5n07", "eprint_id": 45454, "eprint_status": "archive", "datestamp": "2023-08-19 17:25:03", "lastmod": "2023-10-26 17:59:56", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Lau-K-H", "name": { "family": "Lau", "given": "K. H." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Measurements of Fe and Ar Fragmentation Cross Sections", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 NASA/STI. Provided by the NASA Astrophysics Data System.\n\nWe are grateful to Dr. M. E. Wiedenbeck, who developed the\nMonte Carlo approach for evaluating the semi-empirical cross-section formulae,\nfor helpful discussions on a number of aspects of this work. Dr. J. D. Spalding was\nresponsible for developing most of the techniques for resolving Fe isotopes in HlST\nand offered advice on several occasions. We also thank Dr. H. C. Crawford for help\nwith the Bevalac calibrations. This work was supported in part by NASA under\ngrant NGR 05-002-160 and contract NAS5-28449.\n\nPublished - 1985ICRC____3___91L.pdf
", "abstract": "Measurements are reported of the yields of individual isotopes of Cr to\nCo (Z = 24 to 27) resulting from the fragmentation of ^(56)Fe, and the isotopes\nof Mg to K (Z = 12 to 19) resulting from the fragmentation of ^(40)Ar.", "date": "1985", "date_type": "published", "publisher": "Goddard Space Flight Center", "id_number": "CaltechAUTHORS:20140501-203501005", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140501-203501005", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NAS5-28449" } ] }, "other_numbering_system": { "items": [ { "id": "1985-06", "name": "Space Radiation Labortory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Jones-F-C", "name": { "family": "Jones", "given": "F. C." } } ] }, "primary_object": { "basename": "1985ICRC____3___91L.pdf", "url": "https://authors.library.caltech.edu/records/ytfp4-r5n07/files/1985ICRC____3___91L.pdf" }, "pub_year": "1985", "author_list": "Lau, K. H.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/sbe6s-seh80", "eprint_id": 45439, "eprint_status": "archive", "datestamp": "2023-08-19 17:24:38", "lastmod": "2023-10-26 17:59:25", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "Changes in the Energy Spectrum of Anomalous Oxygen and Helium During 1977-1985", "ispublished": "unpub", "full_text_status": "public", "keywords": "Cosmic Rays, Drift Rate, Energy Spectra, Helium, Oxygen, Particle Motion, Solar Magnetic Field, Hysteresis, Magnetic Anomalies, Polarity, Solar Cycles, Solar Wind, Voyager Project", "note": "\u00a9 NASA/STI. Provided by the NASA Astrophysics Data System.\n\nWe are grateful toR. E. Vogt and other CRS team members at the California\nInstitute of Technology, the Goddard Space Flight Center, the University of Arizona, and\nthe University of New Hampshire. This work was supported in part by NASA under contract\nNAS 7-918 and grant NGR 05-002-160.\n\nPublished - 1985-10.pdf
", "abstract": "We have used data from the cosmic-ray experiment on the Voyager spacecraft to\nmeasure the energy spectrum of anomalous O and He during the period 1977 to\n1985. We find that these spectra change dramatically after the middle of 1980,\nwith the peak or plateau region of the differential spectrum shifting to a higher\nenergy. This change appears to be related to the reversal of the solar magnetic\nfield and could imply that particle drifts are important to the acceleration or propagation\nof these particles.", "date": "1985", "date_type": "published", "publisher": "Goddard Space Flight Center", "id_number": "CaltechAUTHORS:20140501-142200881", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140501-142200881", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS 7-918" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1985-10", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Jones-F-C", "name": { "family": "Jones", "given": "F. C." } } ] }, "primary_object": { "basename": "1985-10.pdf", "url": "https://authors.library.caltech.edu/records/sbe6s-seh80/files/1985-10.pdf" }, "pub_year": "1985", "author_list": "Cummings, A. C.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/dpxmh-31b18", "eprint_id": 45444, "eprint_status": "archive", "datestamp": "2023-08-19 17:24:46", "lastmod": "2023-10-26 17:59:34", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Newport-B-J", "name": { "family": "Newport", "given": "B. J." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } } ] }, "title": "Elemental Abundances of Cosmic Rays with Z > 33 as Measured on HEAO-3", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 NASA/STI. Provided by the NASA Astrophysics Data System.\n\nWe thank B.W. Gauld for assistance in programming for data analysis. This work was supported in part by NASA grants NAG 8-498, 500, 502 and NGR 05-002-160, 24-005-050, 26-008-001.\n\nPublished - 1985-16.pdf
", "abstract": "The Heavy Nuclei Experiment on (HEAO-3) high energy astronomy observatory 3 uses a combination of ion chambers and a Cerenkov counter. During analysis, each particle is assigned two parameters, Zc and Zi, proportional to the square roots of the Cerenkov and mean ionization signals respectively. Because the ionization signal is double valued, a unique assignment of particle charge, Z, is not possible in general. Previous work was limited to particles of either high rigidity or low energy, for which a unique charge assignment was possible, although those subsets contain less than 50% of the total number of particles observed. The maximum likelihood technique was used to determine abundances for the complete data set from approx. 1.5 to approx. 80 GeV/amu.", "date": "1985", "date_type": "published", "publisher": "Goddard Space Flight Center", "id_number": "CaltechAUTHORS:20140501-144334411", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140501-144334411", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG 8-498" }, { "agency": "NASA", "grant_number": "NAG 8-500" }, { "agency": "NASA", "grant_number": "NAG 8-502" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NGR 24-005-050" }, { "agency": "NASA", "grant_number": "NGR 26-008-001" } ] }, "other_numbering_system": { "items": [ { "id": "1985-16", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Jones-F-C", "name": { "family": "Jones", "given": "F. C." } } ] }, "primary_object": { "basename": "1985-16.pdf", "url": "https://authors.library.caltech.edu/records/dpxmh-31b18/files/1985-16.pdf" }, "pub_year": "1985", "author_list": "Newport, B. J.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/c9jpb-qyc57", "eprint_id": 45437, "eprint_status": "archive", "datestamp": "2023-08-19 17:24:33", "lastmod": "2023-10-26 17:59:23", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Althouse-W-E", "name": { "family": "Althouse", "given": "W. E." } }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. R." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Finger-M-H", "name": { "family": "Finger", "given": "M." } }, { "id": "Prince-T-A", "name": { "family": "Prince", "given": "T. A." }, "orcid": "0000-0002-8850-3627" }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Starr-C-H", "name": { "family": "Starr", "given": "C. H." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "A Balloon-Borne Imaging Gamma-Ray Telescope", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 NASA/STI. Provided by the NASA Astrophysics Data System.\n\nWe thank R. E. Vogt for contributions to this project. This work is supported in part by NASA grant NGR\n05-002-160.\n\nPublished - 1985-13.pdf
", "abstract": "This paper describes a balloon-borne coded-aperture y-ray telescope for galactic\nand extragalactic astronomy observations. The instrument, called GRIP (Gamma Ray Imaging\nPayload), is designed for measurements in the energy range from 30 keV to 5 MeV with an angular\nresolution of 0.6\u00b0 over a 20\u00b0 field of view. Distinguishing characteristics of the telescope are a\nrotating hexagonal coded-aperture mask and a thick NaI scintillation camera. Rotating hexagonal\ncoded-apertures and the development of thick scintillation cameras are discussed in Cook et\nal. [1984 and 1985, referred to as Papers I and II respectively].", "date": "1985", "date_type": "published", "publisher": "Goddard Space Flight Center", "id_number": "CaltechAUTHORS:20140501-140747582", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140501-140747582", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1985-13", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Jones-F-C", "name": { "family": "Jones", "given": "F. C." } } ] }, "primary_object": { "basename": "1985-13.pdf", "url": "https://authors.library.caltech.edu/records/c9jpb-qyc57/files/1985-13.pdf" }, "pub_year": "1985", "author_list": "Althouse, W. E.; Cook, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/86qaf-c1z52", "eprint_id": 45452, "eprint_status": "archive", "datestamp": "2023-08-19 17:24:55", "lastmod": "2023-10-26 17:59:52", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Althouse-W-E", "name": { "family": "Althouse", "given": "W. E." } }, { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. R." } } ] }, "title": "Balloon-Borne Video Cassette Recorders For Digital Data Storage", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 NASA/STI. Provided by the NASA Astrophysics Data System.\n\nThis work was supported in part by NASA grant NGR 05-002-160.\n\nPublished - 1985-14.pdf
", "abstract": "A high-speed, high-capacity digital data storage system has been developed for a new\nballoon-borne gamma-ray telescope {see paper 0G9.2-2). The system incorporates sophisticated, yet easy\nto use and economical consumer products: the portable video cassette recorder (VCR) and a relatively\nnewer item - the \"digital audio processor\". The in-flight recording system employs eight\nVCRs and will provide a continuous data storage rate of 1.4 megabits/sec throughout a 40 hour\nballoon flight. Data storage capacity is 25 gigabytes and power consumption is only 10 watts.", "date": "1985", "date_type": "published", "publisher": "Goddard Space Flight Center", "id_number": "CaltechAUTHORS:20140501-201110444", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140501-201110444", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1985-14", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Jones-F-C", "name": { "family": "Jones", "given": "F. C." } } ] }, "primary_object": { "basename": "1985-14.pdf", "url": "https://authors.library.caltech.edu/records/86qaf-c1z52/files/1985-14.pdf" }, "pub_year": "1985", "author_list": "Althouse, W. E. and Cook, W. R." }, { "id": "https://authors.library.caltech.edu/records/h1vtx-bt549", "eprint_id": 45280, "eprint_status": "archive", "datestamp": "2023-08-19 17:24:19", "lastmod": "2023-10-26 17:55:22", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "Measurements of Cosmic Ray Isotopes from a Space Platform", "ispublished": "unpub", "full_text_status": "restricted", "note": "I am grateful to Dr. M. H. Israel for helpful discussions and for providing calculations of the \"geomagnetic transmission factor\". I also thank Dr. E. C. Stone for instructive comments. This work was supported in by NASA under grant NGR 05-002-160.", "abstract": "Possibilities for measuring cosmic ray isotopes with 3 \u2264 Z \u2264 30 from an Earth-orbiting space-platform are considered. Included are a summary of scientific objectives, a survey of current instrumentation, an examination of the effect of the geomagnetic field, and estimates of the yield of isotopes that could be realized. It is found that space platform experiments could provide a factor of ~200 improvement in yield over currently approved future experiments. To address the objectives of cosmic ray isotope studies most effectively, measurements should be made by several complementary instruments spanning the range of energies from < 0.1 to ~100 GeV/nucleon.", "date": "1985", "date_type": "published", "publisher": "Louisiana State University", "id_number": "CaltechAUTHORS:20140429-103749772", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140429-103749772", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1984-06", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Jones-W-V", "name": { "family": "Jones", "given": "W. V." } }, { "id": "Wefel-J-P", "name": { "family": "Wefel", "given": "J. P." } } ] }, "pub_year": "1985", "author_list": "Mewaldt, R. A." }, { "id": "https://authors.library.caltech.edu/records/aa4d3-98x84", "eprint_id": 45451, "eprint_status": "archive", "datestamp": "2023-08-19 17:24:50", "lastmod": "2023-10-26 17:59:50", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Finger-M-H", "name": { "family": "Finger", "given": "M. H." } }, { "id": "Prince-T-A", "name": { "family": "Prince", "given": "T. A." }, "orcid": "0000-0002-8850-3627" } ] }, "title": "Hexagonal Uniformly Redundant Arrays for Coded-Aperture Imaging", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 NASA/STI. Provided by the NASA Astrophysics Data System.\n\nWe acknowledge useful discussions with W. R. Cook. This work is supported in part by NASA grant NGR 05-002-160.\n\nPublished - 1985-12.pdf
", "abstract": "Uniformly redundant arrays are used in coded-aperture imaging, a technique for forming images\nwithout mirrors or lenses. This technique is especially important for the high energy x-ray\nand y-ray region above 20 keV. In this technique, a mask consisting of opaque (closed) and transparent\n(open) areas is placed between the photon sources to be imaged and a position sensitive\ndetector or a detector array. Each source casts a shadow pattern of the mask or aperture onto the\ndetector. This shadow pattern may be viewed as an encoded signal for that source direction. If\neach possible source code is unique, the detected composite of overlapping shadow patterns may\nbe decoded to produce an image of the source distribution.", "date": "1985", "date_type": "published", "publisher": "Goddard Space Flight Center", "id_number": "CaltechAUTHORS:20140501-200010439", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140501-200010439", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1985-12", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Jones-F-C", "name": { "family": "Jones", "given": "F. C." } } ] }, "primary_object": { "basename": "1985-12.pdf", "url": "https://authors.library.caltech.edu/records/aa4d3-98x84/files/1985-12.pdf" }, "pub_year": "1985", "author_list": "Finger, M. H. and Prince, T. A." }, { "id": "https://authors.library.caltech.edu/records/kjytk-ez451", "eprint_id": 45442, "eprint_status": "archive", "datestamp": "2023-08-19 17:24:42", "lastmod": "2023-10-26 17:59:32", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Christon-S-P", "name": { "family": "Christon", "given": "S. P." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Behannon-K-W", "name": { "family": "Behannon", "given": "K. W." } }, { "id": "Burlaga-L-F", "name": { "family": "Burlaga", "given": "L. F." }, "orcid": "0000-0002-5569-1553" } ] }, "title": "Differential Measurement of Cosmic-Ray Gradient with Respect to Interplanetary Current Sheet", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 NASA/STI. Provided by the NASA Astrophysics Data System.\n\nWe are grateful for the contributions of R.E. Vogt, other Voyager\nCosmic Ray Subsystem team members, and N.F. Ness. Work at Caltech was supported\nin part by the National Aeronautics and Space Administration under contract\nJPL 49-556-63120-0-2600 and grant NGR 05-002-160.\n\nPublished - 1985-09.pdf
", "abstract": "Simultaneous magnetic field and charged particle measurements from the Voyager\nspacecraft at heliographic latitude separations from 10\u00b0 to 21 a are used to\ndetermine the latitude gradient of the galactic cosmic ray flux with respect to the\ninterplanetary current sheet. By comparing the ratio of cosmic ray flux at Voyager\n1 to that at Voyager 2 during periods when both spacecraft are first north\nand then south of the interplanetary current sheet, we find an estimate of the\nlatitudinal gradient with respect to the current sheet of approximately -0.15 \u00b1\n0.05 %/ deg under restricted interplanetary conditions.", "date": "1985", "date_type": "published", "publisher": "Goddard Space Flight Center", "id_number": "CaltechAUTHORS:20140501-143744927", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140501-143744927", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "JPL", "grant_number": "9-556-63120-0-2600" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1985-09", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Jones-F-C", "name": { "family": "Jones", "given": "F. C." } } ] }, "primary_object": { "basename": "1985-09.pdf", "url": "https://authors.library.caltech.edu/records/kjytk-ez451/files/1985-09.pdf" }, "pub_year": "1985", "author_list": "Christon, S. P.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/qgs2x-wrh76", "eprint_id": 45313, "eprint_status": "archive", "datestamp": "2023-08-19 17:24:23", "lastmod": "2024-01-13 15:26:59", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Crannell-C-J", "name": { "family": "Crannell", "given": "C. J." } }, { "id": "Hurford-G-J", "name": { "family": "Hurford", "given": "G. J." } }, { "id": "Orwig-L-E", "name": { "family": "Orwig", "given": "L. E." } }, { "id": "Prince-T-A", "name": { "family": "Prince", "given": "T. A." }, "orcid": "0000-0002-8850-3627" } ] }, "title": "A Fourier Transform Telescope for Sub-arcsecond Imaging of X-Rays and Gamma Rays", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1985 SPIE. \n\nThe imaging techniques described here have been stimulated by contributions form a large number of individuals throughout the high-energy solar physics and astrophysics community. Extensive discussion and review has come from NASA working groups and study teams, namely the Hard X-ray Imaging Facility Definition Team under L. E. Peterson, the Pinhole/Occulter Facility Science Working Group under H. R. Hudson and E. Tandberg-Hanssen, The MAX '91 Science Study Committee under B. R. Dennis, and the High-Energy Facility Workshop for the Advanced Solar Observatory under E. P. Chupp. At Caltech this work is supported by NSF grant ATM-83-09955 and NASA grant NGR 05-002-160.\n\nSubmitted - 1985-25.pdf
", "abstract": "This paper describes a Fourier transform telescope designed to image solar flare X-rays and gamma rays at energies up to 1 MeV with arcsecond or subarcsecond resolution. The imaging technique makes use of a bigrid collimator divided into a number of smaller areas called subcollimators. The grids in each subcollimator consist of a set of linear apertures so configured that each subcollimator provides a measurement of a single Fourier component of the angular distribution of the source. The imaging concept is therefore a mathematical analog to aperture synthesis in radio astronomy. For X-ray and gamma-ray astronomy, this approach has significant advantages in terms of relaxed requirements for position sensitivity in the detector and for control of grid alignment in the large scale telescope structure. The concept of the Fourier transform telescope will be illustrated with numerical parameters of a version now under study for the Pinhole/Occulter Facility.", "date": "1985", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers (SPIE)", "id_number": "CaltechAUTHORS:20140429-131631334", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140429-131631334", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "ATM-83-09955" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1985-25", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Sanger-G-M", "name": { "family": "Sanger", "given": "Gregory M." } } ] }, "doi": "10.1117/12.950400", "primary_object": { "basename": "1985-25.pdf", "url": "https://authors.library.caltech.edu/records/qgs2x-wrh76/files/1985-25.pdf" }, "pub_year": "1985", "author_list": "Crannell, C. J.; Hurford, G. J.; et el." }, { "id": "https://authors.library.caltech.edu/records/8n5tp-myp25", "eprint_id": 45270, "eprint_status": "archive", "datestamp": "2023-08-19 16:28:46", "lastmod": "2024-01-13 15:26:57", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Future Studies of Planetary Rings by Spaceprobes", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright University of Arizona Press.\n\nI appreciate helful comments by S. A. Collins, J . N. Cuzzi, J.B.\nHolberg, T.V. Johnson, A.L. Lane, and E.D. Miner. This work was partially\nsupported by the National Aeronautics and Space Administration.\n\nPublished - 1983-30.pdf
", "abstract": "Recent observations by the Pioneer and Voyager missions have\nbeen the basis for major advances in our know ledge and\nunderstanding of the Jovian and Saturnian rings. Future\nspaceprobe observations offer further opportunities for\nstudying the ring systems of giant planets.", "date": "1984", "date_type": "published", "publisher": "University of Arizona Press", "place_of_pub": "Tucson, AZ", "pagerange": "687-703", "id_number": "CaltechAUTHORS:20140429-092933641", "isbn": "2854281004", "book_title": "Planetary Rings", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140429-092933641", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1983-30", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Brahic-A", "name": { "family": "Brahic", "given": "A." } } ] }, "primary_object": { "basename": "1983-30.pdf", "url": "https://authors.library.caltech.edu/records/8n5tp-myp25/files/1983-30.pdf" }, "pub_year": "1984", "author_list": "Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/9fdd6-knw11", "eprint_id": 45272, "eprint_status": "archive", "datestamp": "2023-08-19 16:28:54", "lastmod": "2023-10-26 17:55:01", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Owen-T-C", "name": { "family": "Owen", "given": "T. C." } } ] }, "title": "The Saturn System", "ispublished": "unpub", "full_text_status": "public", "note": "Published - 379221.pdf
", "abstract": "Saturn is a giant planet surrounded by numerous rings, many satellites, and a\nlarge magnetosphere. Although the Saturn system bears a general resemblance\nto the Jovian system, it has many unique attributes which provide new insight\ninto the formation and evolution of planetary systems. This introductory chapter\nprovides an overview of the results of recent studies of the Saturn system\nwhich are described in detail in the following chapters.", "date": "1984", "date_type": "published", "publisher": "University of Arizona Press", "id_number": "CaltechAUTHORS:20140429-094541046", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140429-094541046", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1984-01", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Gehrels-T", "name": { "family": "Gehrels", "given": "Tom" } }, { "id": "Matthews-M-S", "name": { "family": "Matthews", "given": "Mildred Shapley" } } ] }, "primary_object": { "basename": "379221.pdf", "url": "https://authors.library.caltech.edu/records/9fdd6-knw11/files/379221.pdf" }, "pub_year": "1984", "author_list": "Stone, E. C. and Owen, T. C." }, { "id": "https://authors.library.caltech.edu/records/jfgzg-03n34", "eprint_id": 45165, "eprint_status": "archive", "datestamp": "2023-08-19 15:34:28", "lastmod": "2023-10-26 17:36:32", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Grossman-D-P", "name": { "family": "Grossman", "given": "D. P." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Jones-M-D", "name": { "family": "Jones", "given": "M. D." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Fickle-R-K", "name": { "family": "Fickle", "given": "R. K." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } } ] }, "title": "Cosmic Ray Elemental Abundances for 26 \u2264 Z \u2264 42 Measured on HEAO-3", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1983 INSDOC.\nProvided by the NASA Astrophysics Data System.\n\nThis work was supported in part by NASA under\ncontracts NAS8-27976,77,78 and grants NGR 05-002-160, 24-005-050, 26-008-001, and NAG 8448.\n\nPublished - 1983-17.pdf
", "abstract": "Measurements from the Heavy Nuclei Experiment (Binns et al. 1981a)\naboard the HEAO-3 satellite have been used to extract definite-abundance\nvalues for the even charge nuclei and upper limit values for the less\nabundant odd charge nuclei. Individual peaks in the charge spectrum for\neven charge nuclei over this charge region are observed and the cosmic ray\nabundances obtained from this charge spectrum are compared with abundances\ncharacteristic of the solar system and with a solar system r process.", "date": "1983", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20140423-140020677", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140423-140020677", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS8-27976" }, { "agency": "NASA", "grant_number": "NAS8-27977" }, { "agency": "NASA", "grant_number": "NAS8-27978" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NGR 24-005-050" }, { "agency": "NASA", "grant_number": "NGR 26-008-001" }, { "agency": "NASA", "grant_number": "NAG 8448" } ] }, "other_numbering_system": { "items": [ { "id": "1983-17", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Durgaprasad-N", "name": { "family": "Durgaprasad", "given": "N." } } ] }, "primary_object": { "basename": "1983-17.pdf", "url": "https://authors.library.caltech.edu/records/jfgzg-03n34/files/1983-17.pdf" }, "pub_year": "1983", "author_list": "Binns, W. R.; Grossman, D. P.; et el." }, { "id": "https://authors.library.caltech.edu/records/z903s-dye87", "eprint_id": 45171, "eprint_status": "archive", "datestamp": "2023-08-19 15:34:41", "lastmod": "2023-10-26 17:36:45", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Jones-M-D", "name": { "family": "Jones", "given": "M. D." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Fickle-R-K", "name": { "family": "Fickle", "given": "R. K." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } } ] }, "title": "Energy Spectra of Ultraheavy Cosmic Rays Results from HEAO-3", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1983 INSDOC.\n\nProvided by the NASA Astrophysics Data System.\n\nThis research was supported in part by NASA under contracts\nNAS8-27976, 77, 78 and grants NGR 05-002-160, 24-005-050\nand 26-008-001.\n\nPublished - 1983-20.pdf
", "abstract": "The HEAO-3 Heavy Nuclei Experiment measures\ncosmic-ray energy directly in the interval 400 to\n~1200 MeV/amu. Geomagnetic cutoffs can also be\nderived up to ~15 GV. We present preliminary\nrigidity spectra of various ultraheavy cosmic-ray\nelements relative to iron.", "date": "1983", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20140423-143013765", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140423-143013765", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS8-27976" }, { "agency": "NASA", "grant_number": "NAS8-27977" }, { "agency": "NASA", "grant_number": "NAS8-27978" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NGR 24-005-050" }, { "agency": "NASA", "grant_number": "NGR 26-008-001" } ] }, "other_numbering_system": { "items": [ { "id": "1983-20", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Durgaprasad-N", "name": { "family": "Durgaprasad", "given": "N." } } ] }, "primary_object": { "basename": "1983-20.pdf", "url": "https://authors.library.caltech.edu/records/z903s-dye87/files/1983-20.pdf" }, "pub_year": "1983", "author_list": "Israel, M. H.; Jones, M. D.; et el." }, { "id": "https://authors.library.caltech.edu/records/r662x-k8247", "eprint_id": 45323, "eprint_status": "archive", "datestamp": "2023-08-19 15:35:07", "lastmod": "2023-10-26 17:56:20", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Webber-William-R", "name": { "family": "Webber", "given": "W. R." }, "orcid": "0000-0001-9238-9145" }, { "id": "Cummings-Alan-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Studies of Low Energy Cosmic Rays - The Anomalous Component", "ispublished": "unpub", "full_text_status": "public", "keywords": "Astronomical Spectroscopy, Cosmic Rays, Energy Spectra, Helium, Oxygen, Radiant Flux Density, Anomalies, Ionization Potentials, Milky Way Galaxy, Neon, Nitrogen, Solar Cosmic Rays, Spectral Energy Distribution, Spectrum Analysis", "note": "\u00a9 1983 INSDOC.\n\nProvided by the NASA Astrophysics Data System.\n\nWe thank R. E. Vogt for useful discussions and for his efforts as CRS\nPrincipal Investigator. We also thank R. A. Mewaldt for many helpful suggestions. This wor~\nwas supported in part by NASA under contract NAS 7-918 and grants NAGW-200 and NGR\n05-002-160.\n\nPublished - 1983-25.pdf
", "abstract": "Data from the cosmic ray subsystem on the Voyager spacecraft is used to measure the spectra of He, C, N, O, and Ne with about 4-124 MeV/nuc (for O) near 1 AU. By subtracting both a low-energy solar/interplanetary component and the high-energy galactic component the energy spectra of the anomalous cosmic-ray species He, N, O, and Ne have been determined. It is suggested that the shapes of these spectra carry information about the charge state of the particles and the rigidity dependence of the diffusion coefficient. For similar power-law source spectra at the boundary of the modulation region, the location of features in the energy spectra indicates that the anomalous particles are singly ionized.", "date": "1983", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20140429-144131428", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140429-144131428", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS 7-918" }, { "agency": "NASA", "grant_number": "NAGW-200" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1983-25", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Durgaprasad-N", "name": { "family": "Durgaprasad", "given": "N." } } ] }, "primary_object": { "basename": "1983-25.pdf", "url": "https://authors.library.caltech.edu/records/r662x-k8247/files/1983-25.pdf" }, "pub_year": "1983", "author_list": "Webber, W. R.; Cummings, A. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/dva4j-tzk08", "eprint_id": 45164, "eprint_status": "archive", "datestamp": "2023-08-19 15:34:24", "lastmod": "2023-10-26 17:36:29", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Lau-K-H", "name": { "family": "Lau", "given": "K. H." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Wiedenbeck-M-E", "name": { "family": "Wiedenbeck", "given": "M. E." }, "orcid": "0000-0002-2825-3128" } ] }, "title": "An Accelerator Test of Semi-Empirical Cross-Sections", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1983 INSDOC.\n\nProvided by the NASA Astrophysics Data System.\n\nWe are grateful to the Heckman/Greiner group at LBL, especially\nHank Crawford, for assisting with the calibrations. We thank E. C. Stone for\nadvice and support. This work was supported in part by NASA under contracts\nNAS5-20721, NAS7-918, and NAS5-20995, and grants NGR 05-002-160 and NAG 5-308.\n\nPublished - 1983-16.pdf
", "abstract": "We compare experimentally measured yields of isotopes of elements\nfrom _(12)Mg to _(19)K resulting from the fragmentation of ^(40)Ar with calculated\nyields based on semi-empirical cross-section formulae. The\nmeasurements, made at the LBL Bevalac using a beam of 287 MeV / amu\n^(40)Ar incident on a CH_2 target, achieve excellent mass resolution (\u03c3_m \u2264 0.2 amu) through the use of a Si(Li) detector telescope. The general\nagreement between calculation and experiment is good (rms\ndifference \u2243 24%), but some significant differences are reported.", "date": "1983", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20140423-135816216", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140423-135816216", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-20721" }, { "agency": "NASA", "grant_number": "NAS7-918" }, { "agency": "NASA", "grant_number": "NAS5-20995" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NAG 5-308" } ] }, "other_numbering_system": { "items": [ { "id": "1983-16", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Durgaprasad-N", "name": { "family": "Durgaprasad", "given": "N." } } ] }, "primary_object": { "basename": "1983-16.pdf", "url": "https://authors.library.caltech.edu/records/dva4j-tzk08/files/1983-16.pdf" }, "pub_year": "1983", "author_list": "Lau, K. H.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/maxqr-q0590", "eprint_id": 45094, "eprint_status": "archive", "datestamp": "2023-08-19 15:33:49", "lastmod": "2024-01-13 15:26:44", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } }, { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" } ] }, "title": "Voyager Measurements of the Energy Spectrum, Charge Composition, and Long Term Temporal Variations of the Anomalous Components in 1977-1982", "ispublished": "unpub", "full_text_status": "public", "note": "We greatly appreciate the efforts of R. E. Vogt, both in his capacity as CRS Principal Investigator and as a colleague who has provided useful discussions. We care grateful to the Caltech and Goddard groups who have supported the CRS experiment. We appreciate helpful discussions with E. C. Stone. This work was supported in part by NASA under contract NAS 7-918 and grants NAGW-200 and NGR 05-002-160.\n\nPublished - 1983-04.pdf
", "abstract": "The large collecting area and wide energy range of the cosmic ray experiment on Voyager 1 and 2 was used to examine the energy spectra, charge composition, and long term temporal variations of the anomalous components in 1977-1982. Individual energy spectra are obtained for 17 separate quiet time periods during the time interval. The composite spectra of anomalous He, N, O, and Ne are obtained to a new level of precision. This includes the spectral shape and the relative abundance. Essentially, the spectral shape of N, O, and Ne appear to be similar. The ratios of anomalous N and Ne to O are found to be different from both the solar cosmic ray and galactic cosmic ray source composition. Some evidence is found for the enhancement of Ar as well. In the case of elements such as C, Mg, S, and Fe it is difficult to separate a possible lower intensity anomalous component from a quasi-steady interplanetary component that appears to be present at the lowest energies. The long term temporal variations of the anomalous He and O components were studied from 1977-82, a period from minimum to maximum in the modulation cycle. The tracking between these anomalous component intensities and the integral intensity of 75 MeV protons is striking; however, the intensity decrease of the anomalous components is much greater.", "date": "1983", "date_type": "published", "publisher": "NASA", "id_number": "CaltechAUTHORS:20140421-162004001", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140421-162004001", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS 7-918" }, { "agency": "NASA", "grant_number": "NAGW-200" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1983-04", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Neugebauer-M", "name": { "family": "Neugebauer", "given": "Marcia" } } ] }, "primary_object": { "basename": "1983-04.pdf", "url": "https://authors.library.caltech.edu/records/maxqr-q0590/files/1983-04.pdf" }, "pub_year": "1983", "author_list": "Webber, W. R. and Cummings, A. C." }, { "id": "https://authors.library.caltech.edu/records/83gyx-j8e80", "eprint_id": 45174, "eprint_status": "archive", "datestamp": "2023-08-19 15:34:54", "lastmod": "2023-10-26 17:36:51", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Grossman-D-P", "name": { "family": "Grossman", "given": "D. P." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Margolis-S-H", "name": { "family": "Margolis", "given": "S. H." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Krombel-K-E", "name": { "family": "Krombel", "given": "K. E." } }, { "id": "Brewster-N-R", "name": { "family": "Brewster", "given": "N. R." } }, { "id": "Fickle-R-K", "name": { "family": "Fickle", "given": "R. K." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } } ] }, "title": "Correlation of Source Abundances of Ultraheavy Cosmic Rays with First Ionization Potential - Results from HEAO-3", "ispublished": "unpub", "full_text_status": "public", "note": "This work was supported in part by NASA under contracts NAS 8-27976, 77, 78 and grants NGR 05-002-160, 24-005-050, 26-008-001, and NAG8-448.\n\nPublished - 1983-23.pdf
", "abstract": "The cosmic-ray-source abundances inferred from HEAO-3 observation by the Heavy Nuclei Experiment for 30 < Z < 60 generally follow the correlation with first-ionization potential which has previously been observed for Z < 30. However the low Ge abundance suggests that the elemental \"volatility\" may be an organizing factor.", "date": "1983", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20140423-144319881", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140423-144319881", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS 8-27976" }, { "agency": "NASA", "grant_number": "NAS 8-27977" }, { "agency": "NASA", "grant_number": "NAS 8-27978" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NGR 24-005-050" }, { "agency": "NASA", "grant_number": "NGR 26-008-001" }, { "agency": "NASA", "grant_number": "NAG8-448" } ] }, "other_numbering_system": { "items": [ { "id": "1983-23", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Durgaprasad-N", "name": { "family": "Durgaprasad", "given": "N." } } ] }, "primary_object": { "basename": "1983-23.pdf", "url": "https://authors.library.caltech.edu/records/83gyx-j8e80/files/1983-23.pdf" }, "pub_year": "1983", "author_list": "Israel, M. H.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/137cd-zdk49", "eprint_id": 45264, "eprint_status": "archive", "datestamp": "2023-08-19 15:35:02", "lastmod": "2023-10-26 17:54:42", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "Short and Long Term Variations of the Anomalous Component", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 INSDOC. Provided by the NASA Astrophysics Data System.\n\nWe thank R. Vogt\nfor useful diScussions and for his efforts as\nCRS Principal Investigator. We also thank E.\nC. Stone for important contributions to this\nwork. This work was supported in part by\nNASA under contract NAS 7-918 and grants\nNAGW-200 and NGR 05-002-160.\n\nPublished - 1983-26.pdf
", "abstract": "We have used data from the cosmic ray experiment (CRS) on Voyagers 1 and 2\nto examine anomalous 0 and He in the time period from launch in 1977 to\nmid-1982. We find several time periods where large periodic (typically 26 day)\ntemporal variations of 0 between - 5 -15 Me V /nuc are present, with variations\nin intensity by up to a factor of 10. On the longer term, there is a sharp drop in\nthe anomalous 0 intensity relative to the galactic co.smic ray components near\nthe middle of 1980. After the decrease we still find evidence at - 10 AU for the\npresence of anomalous 0 and He near the time of maximum modulation. Data\nfrom a larger fraction of the solar cycle will be required before it can be determined\nwhether the intensity of the anomalous component is lower in the Second\nhalf of the cycle (after the solar field reversal) than in the first half.", "date": "1983", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20140429-083239292", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140429-083239292", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS 7-918" }, { "agency": "NASA", "grant_number": "NAGW-200" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1983-26", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Durgaprasad-N", "name": { "family": "Durgaprasad", "given": "N." } } ] }, "primary_object": { "basename": "1983-26.pdf", "url": "https://authors.library.caltech.edu/records/137cd-zdk49/files/1983-26.pdf" }, "pub_year": "1983", "author_list": "Cummings, A. C.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/n600z-7tn21", "eprint_id": 45093, "eprint_status": "archive", "datestamp": "2023-08-19 15:33:45", "lastmod": "2024-01-13 15:26:42", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "Temporal Variations of the Anomalous Oxygen Component", "ispublished": "unpub", "full_text_status": "public", "note": "We greatly appreciate the efforts of R. E. Vogt, both in his capacity as CRS Principal Investigator and as a colleague who has provided useful discussions. We care grateful to the Caltech and Goddard groups who have supported the CRS experiment. We thank E. C. Stone, R. A. Mewaldt, and S. P. Christon for many helpful discussions. We are grateful to Dr. Norm Ness and coworkers of the Goddard Space Flight Center Magnetometer Team and Dr. Herb Bridge and coworkers of the Massachusetts Institute of Technology Plasma Team for providing the Voyager magnetic field and solar wind data, respectively. This work was supported in part by NASA under contract NAS 7-918 and grants NAGW-200 and NGR 05-002-160.\n\nAccepted Version - 1983-03.pdf
", "abstract": "Data from the cosmic ray experiment on Voyagers 1 and 2 was used to examine anomalous oxygen in the time period from launch in 1977 to the end of 1981. Several time periods were found where large periodic (typically 26 day) temporal variations of the oxygen intensity between approximately 5 - 15 MeV/nuc are present. Variations in intensity by up to a factor of 10 are observed during these periods. Several characteristics of these variations indicate that they are not higher energy extensions of the low energy particle (approximately 1 MeV/nuc) increases found in many corotating interaction regions (CIR's). Many of these periodic temporal variations are correlated with similar, but much smaller, recurrent variations in the 75 MeV proton rate. Voyager 1 and Voyager 2 counting rates were compared to estimate the local radial gradient for both the protons and the oxygen. The proton gradients during periods of both maximum and minumum fluxes are consistent with the overall positive radial gradients reported by others from Pioneer and near-Earth observations, supporting the view that these variations are due to local modulation of a source outside the radial range of project measurements. In contrast, the oxygen gradients during periods of maximum proton flux differ in sign from those during minimum proton fluxes, suggesting that the origin of the oxygen variations is different from that of the protons.", "date": "1983", "date_type": "published", "publisher": "NASA", "id_number": "CaltechAUTHORS:20140421-161259173", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140421-161259173", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS 7-918" }, { "agency": "NASA", "grant_number": "NAGW-200" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1983-03", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Neugebauer-M", "name": { "family": "Neugebauer", "given": "Marcia" } } ] }, "primary_object": { "basename": "1983-03.pdf", "url": "https://authors.library.caltech.edu/records/n600z-7tn21/files/1983-03.pdf" }, "pub_year": "1983", "author_list": "Cummings, A. C. and Webber, W. R." }, { "id": "https://authors.library.caltech.edu/records/hw2cn-gq710", "eprint_id": 45175, "eprint_status": "archive", "datestamp": "2023-08-19 15:34:58", "lastmod": "2023-10-26 17:36:53", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Newport-B-J", "name": { "family": "Newport", "given": "B. J." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Jones-M-D", "name": { "family": "Jones", "given": "M. D." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Fickle-R-K", "name": { "family": "Fickle", "given": "R. K." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } } ] }, "title": "The Non-Z^2 Response of the Heavy Nuclei Cosmic Ray Detector on HEAO-3", "ispublished": "unpub", "full_text_status": "public", "note": "This calibration, like so many others, was made possible by unstinting assistance from Hank Crawford and many others at the Bevalac. We also wish to single out Mel Flores and Fed Lothrop for thanks. We are grateful for advice and assistance from W. E. Althouse, A. Buffington, and J. Epstein. This work was supported in part by NASA contracts NAS 8-27976, 7, 8 and grants NGR 05-002-160, 24-005-050, and 26-008-001.\n\nPublished - 1983-24.pdf
", "abstract": "A combination of ion chambers and Cerenkov radiators similar to the Heavy Nuclei Experiment flown on HEAO-3 was calibrated at the Bevalac heavy-ion accelerator using beams of Mn-25 nuclei at kinetic energies up to about 1700 MeV/nucleon and Au-79 nuclei up to about 1000 MeV/nucleon. The data show only a small deviation (about 2-3 charge units at Au) from the Z^2 scaling used previously (Binns et al., 1981, 1982, 1983) to analyze the HNE data. Although at lower energy, the calibration indicates that the published relative abundances of the _(50)Sn/_(56)Ba group and the published upper-limit actinide abundances are not likely to be significantly affected by non-Z^2 effects.", "date": "1983", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20140423-144626311", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140423-144626311", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS 8-27976" }, { "agency": "NASA", "grant_number": "NAS 8-27977" }, { "agency": "NASA", "grant_number": "NAS 8-27978" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NGR 24-005-050" }, { "agency": "NASA", "grant_number": "NGR 26-008-001" } ] }, "other_numbering_system": { "items": [ { "id": "1983-24", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Durgaprasad-N", "name": { "family": "Durgaprasad", "given": "N." } } ] }, "primary_object": { "basename": "1983-24.pdf", "url": "https://authors.library.caltech.edu/records/hw2cn-gq710/files/1983-24.pdf" }, "pub_year": "1983", "author_list": "Garrard, T. L.; Newport, B. J.; et el." }, { "id": "https://authors.library.caltech.edu/records/7ccyx-h7a81", "eprint_id": 45173, "eprint_status": "archive", "datestamp": "2023-08-19 15:34:50", "lastmod": "2023-10-26 17:36:49", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Margolis-S-H", "name": { "family": "Margolis", "given": "S. H." } }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Brewster-N-R", "name": { "family": "Brewster", "given": "N. R." } }, { "id": "Fixsen-D-J", "name": { "family": "Fixsen", "given": "D. J." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } } ] }, "title": "Abundances of 'Secondary' Elements Among the Ultraheavy Cosmic Rays - Results from HEAO-3", "ispublished": "unpub", "full_text_status": "public", "note": "This work was supported in part by NASA under contracts NAS8-27976, 77, 78 and grants NGR 05-002-160, 24-005-050, and NAG8-448.\n\nPublished - 1983-22.pdf
", "abstract": "The HEAO-3 Heavy Nuclei Experiment has measured elemental abundances of ultraheavy cosmic rays near earth. The elements with atomic number (Z) in the intervals 44 < Z < 48 and 62 < Z < 74 arriving at earth are expected to have significant secondary components. However, their source abundances are unlikely to be low enough to warrant treating them as pure secondaries. The present results are consistent with solar system abundances modified for first ionization potential with possibly some enhancement of the r to s ratio.", "date": "1983", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20140423-143400546", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140423-143400546", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS8-27976" }, { "agency": "NASA", "grant_number": "NAS8-27977" }, { "agency": "NASA", "grant_number": "NAS8-27978" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NGR 24-005-050" }, { "agency": "NASA", "grant_number": "NGR 26-008-001" }, { "agency": "NASA", "grant_number": "NAG8-448" } ] }, "other_numbering_system": { "items": [ { "id": "1983-22", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Durgaprasad-N", "name": { "family": "Durgaprasad", "given": "N." } } ] }, "primary_object": { "basename": "1983-22.pdf", "url": "https://authors.library.caltech.edu/records/7ccyx-h7a81/files/1983-22.pdf" }, "pub_year": "1983", "author_list": "Klarmann, J.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/awpwy-e9j83", "eprint_id": 45160, "eprint_status": "archive", "datestamp": "2023-08-19 15:34:20", "lastmod": "2023-10-26 17:36:19", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Prince-T-A", "name": { "family": "Prince", "given": "T. A." }, "orcid": "0000-0002-8850-3627" }, { "id": "Forrest-D-J", "name": { "family": "Forrest", "given": "D. J." } }, { "id": "Chupp-E-L", "name": { "family": "Chupp", "given": "E. L." } }, { "id": "Kanbach-G", "name": { "family": "Kanbach", "given": "G." } }, { "id": "Share-G-H", "name": { "family": "Share", "given": "G. H." } } ] }, "title": "The Time History of 2.22 MeV Line Emission in Solar Flares", "ispublished": "unpub", "full_text_status": "public", "note": "Published - 1983-11.pdf
", "abstract": "In this paper we examine the time dependence of 2.22 MeV emission using observations of the Solar Maximum Mission (SMM) gamma-ray spectrometer. We will determine the decay time constant for the 2.22 MeV emission process and from this derive implications concerning the density at which neutrons are captured and the value of the ^3He/H ratio. We will also set upper limits on the number of low energy neutrons produced in solar flares. The 2.22 MeV line provides a unique tool for probing the physics of the solar atmosphere since the neutrons which produce the line penetrate to depths exceeding the opacities at which optical observations can be made.", "date": "1983", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20140423-134935332", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140423-134935332", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1983-11", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Durgaprasad-N", "name": { "family": "Durgaprasad", "given": "N." } } ] }, "primary_object": { "basename": "1983-11.pdf", "url": "https://authors.library.caltech.edu/records/awpwy-e9j83/files/1983-11.pdf" }, "pub_year": "1983", "author_list": "Prince, T. A.; Forrest, D. J.; et el." }, { "id": "https://authors.library.caltech.edu/records/g0eqp-1t766", "eprint_id": 45159, "eprint_status": "archive", "datestamp": "2023-08-19 15:34:15", "lastmod": "2023-10-26 17:36:16", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Buffington-A", "name": { "family": "Buffington", "given": "A." } }, { "id": "Lau-K", "name": { "family": "Lau", "given": "K." } }, { "id": "Rasmussen-I-L", "name": { "family": "Rasmussen", "given": "I. L." } } ] }, "title": "Calibration of a Stack of NaI Scintillators at the Berkeley Bevalac", "ispublished": "unpub", "full_text_status": "public", "note": "Partially supported by NASA grant NGR 05-002-160.\n\nPublished - 1983-10.pdf
", "abstract": "A stack of twelve NaI (Tl) discs, 2 cm think each, has been exposed to sea level muons, and to beams of relativistic carbon, neon, argon, and manganese at the Berkeley Bevalac. For ^(55)Mn with \u03b3 = 2.75, the position-measuring accuracy of individual discs is better than \u00b12 mm, individual layer responses are close to the Landau distribution, and residual error for measuring total kinetic energy of the stopping ions is less than 0.25%.", "date": "1983", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20140423-134442705", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140423-134442705", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1983-10", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Durgaprasad-N", "name": { "family": "Durgaprasad", "given": "N." } } ] }, "primary_object": { "basename": "1983-10.pdf", "url": "https://authors.library.caltech.edu/records/g0eqp-1t766/files/1983-10.pdf" }, "pub_year": "1983", "author_list": "Schindler, S. M.; Buffington, A.; et el." }, { "id": "https://authors.library.caltech.edu/records/erjah-x6a31", "eprint_id": 45158, "eprint_status": "archive", "datestamp": "2023-08-19 15:34:11", "lastmod": "2023-10-26 17:36:14", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Rasmussen-I-L", "name": { "family": "Rasmussen", "given": "I. L." } }, { "id": "Laurence-S", "name": { "family": "Laurence", "given": "S." } }, { "id": "Buffington-A", "name": { "family": "Buffington", "given": "A." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } } ] }, "title": "Calibration of An Aerogel Counter of Index 1.1 at the Bevalac", "ispublished": "unpub", "full_text_status": "public", "note": "Partially supported by NASA grant NGR 05-002-160.\n\nPublished - 1983-09.pdf
", "abstract": "A Cerenkov counter consisting of a mosaic with 48 aerogel pieces having refractive indices n \u2248 1.1 has been exposed to sea level muons, and to a beam of relativistic ^(55)Mn at the Berkeley Bevalac. The counter is 6 cm thick and approximately 60 cm in diameter, and is viewed by twelve 12.7 cm diameter photomultipliers. A relativistic muon produces typically 23 \u00b1 4 photoelectrons. The light yield has been mapped as a function of position and has an r.m.s. variation less than 1%/cm. Analysis of the light yield indicates that absorption is important at short wavelengths. The calibration shows that the light yield and uniformity of the counter suffice to determine particle velocity in the \u03b3 range from 2.4 to 3.1 precisely enough to achieve a mass resolution of 0.3 a.m.u. for the instrument described in paper OG2-7 of this conference.", "date": "1983", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20140423-134315709", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140423-134315709", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1983-09", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Durgaprasad-N", "name": { "family": "Durgaprasad", "given": "N." } } ] }, "primary_object": { "basename": "1983-09.pdf", "url": "https://authors.library.caltech.edu/records/erjah-x6a31/files/1983-09.pdf" }, "pub_year": "1983", "author_list": "Rasmussen, I. L.; Laurence, S.; et el." }, { "id": "https://authors.library.caltech.edu/records/4kwf7-mer80", "eprint_id": 45154, "eprint_status": "archive", "datestamp": "2023-08-19 15:34:07", "lastmod": "2023-10-26 17:36:12", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Buffington-A", "name": { "family": "Buffington", "given": "A." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } } ] }, "title": "Further Analysis of a Recent Cosmic-Ray Antiproton Experiment", "ispublished": "unpub", "full_text_status": "public", "note": "This work is supported by Grant NGR-05-002-160 of the National Aeronautics and Space Administration.\n\nPublished - 1983-08.pdf
", "abstract": "Reference is made to the measurements of a cosmic ray antiproton flux at a few hundred MeV reported by Buffington et al. (1981), noting that one of the final background processes to be removed by the data analysis in that study was helium-induced events which satisfied the criteria for topology and timing. The response in the third scintillator S_3 was used to identify and remove these events. For the top two scintillators S_1 and S_2, pulse size information was lost during the data-taking. A method is reported here for the partial retrieval of pulse size information for the scintillator S_2. This is possible because a portion of this signal was subtracted from the Cerenkov response before trigger discrimination and data recording to remove scintillation from the Cerenkov response. For separating protons from more highly charged particles, the method is considered sufficient. It is pointed out that the sample of events identified as antiprotons, for which the method can be applied, has the expected unit charge in scintillator S_2.", "date": "1983", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20140423-133518804", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140423-133518804", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1983-08", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1983-08.pdf", "url": "https://authors.library.caltech.edu/records/4kwf7-mer80/files/1983-08.pdf" }, "pub_year": "1983", "author_list": "Buffington, A. and Schindler, S. M." }, { "id": "https://authors.library.caltech.edu/records/mnd8f-st055", "eprint_id": 45153, "eprint_status": "archive", "datestamp": "2023-08-19 15:34:02", "lastmod": "2023-10-26 17:36:10", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Buffington-A", "name": { "family": "Buffington", "given": "A." } }, { "id": "Lau-K", "name": { "family": "Lau", "given": "K." } }, { "id": "Laursen-S", "name": { "family": "Laursen", "given": "S." } }, { "id": "Rasmussen-I-L", "name": { "family": "Rasmussen", "given": "I. L." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "A Cerenkov - \u0394E/\u0394X Experiment for Measuring Cosmic-Ray Isotopes from Neon Through Iron", "ispublished": "unpub", "full_text_status": "public", "note": "This work is supported in part by Grant NGR 05-002-160 of the National Aeronautics and Space Administration.\n\nPublished - 1983ICRC____2___49B.pdf
", "abstract": "A ballon-borne cosmic-ray experiment has been constructed to measure cosmic-ray isotope masses, It employs a pair of Cerenkov counters and a NaI scintillator stack to determine changes in \u0394E in energy and \u0394\u03b3 in Lorentz factor for a traversing or stopping particle. Mass M = \u0394E/\u0394\u03b3. Mass resolution better than 0.3 a.m.u. is expected for incident elements from neon through iron, with incident Lorentz gammas ranging from 2.4 to 3.1, depending on the element. Using data obtained at the Berkeley Bevalac, the mass resolution \u2202M \u2248 2 a.m.u., measured for ^(55)Mn ions with incident \u03b3 = 2.5.", "date": "1983", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20140423-133323161", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140423-133323161", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1983-07", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1983ICRC____2___49B.pdf", "url": "https://authors.library.caltech.edu/records/mnd8f-st055/files/1983ICRC____2___49B.pdf" }, "pub_year": "1983", "author_list": "Buffington, A.; Lau, K.; et el." }, { "id": "https://authors.library.caltech.edu/records/fht2e-0wq36", "eprint_id": 45151, "eprint_status": "archive", "datestamp": "2023-08-19 15:33:54", "lastmod": "2023-10-26 17:36:06", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Spalding-J-D", "name": { "family": "Spalding", "given": "J. D." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Further Isotopic Studies of Heavy Nuclei in the 9/23/78 Solar Flare", "ispublished": "unpub", "full_text_status": "public", "note": "We are thankful to R. E. Vogt for his contributions throughout the HIST program. This work was supported in part by NASA under contract NAS5-20721 and grant NGR 05-002-160.\n\nPublished - 1983-05.pdf
", "abstract": "The isotopes considered range from He to Mg (Z from 2 to 12). A more accurate value of the Ne-22/Ne-20 ratio is obtained by extending the energy interval for isotope analysis. A significant difference persists between the Ne-22/Ne-20 ratio in this flare and that for the solar wind. How the sun can apparently emit two distinct isotopic components remains a question. Although relatively little is known about the solar wind isotopic composition, it does not appear that the solar wind isotopes have been altered by a simple mass-dependent fractionation process. Reference is made to models that have been proposed which might produce selective enhancements.", "date": "1983", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20140423-132903781", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140423-132903781", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-20721" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1983-05", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Durgaprasad-N", "name": { "family": "Durgaprasad", "given": "N." } } ] }, "primary_object": { "basename": "1983-05.pdf", "url": "https://authors.library.caltech.edu/records/fht2e-0wq36/files/1983-05.pdf" }, "pub_year": "1983", "author_list": "Mewaldt, R. A.; Spalding, J. D.; et el." }, { "id": "https://authors.library.caltech.edu/records/v1s17-qjb84", "eprint_id": 45168, "eprint_status": "archive", "datestamp": "2023-08-19 15:34:32", "lastmod": "2023-10-26 17:36:36", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Krombel-K-E", "name": { "family": "Krombel", "given": "K. E." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Klamiann-J", "name": { "family": "Klamiann", "given": "J." } }, { "id": "Brewster-N-R", "name": { "family": "Brewster", "given": "N. R." } }, { "id": "Fickle-R-K", "name": { "family": "Fickle", "given": "R. K." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } } ] }, "title": "Cosmic-Ray Abundances of the Even Charge Elements from _(50)Sn to _(58)Ce Measured on HEAO-3", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1983 INSDOC.\n\nProvided by the NASA Astrophysics Data System.\n\nWe thank N.S. Collins, B.W. Gauld, D.P. Grossman, and B.J. Newport for assistance in\nprogramming for data analysis. This research was supported in part by NASA under contracts\nNAS 8-27976, 77, 78 and grants NGR 05-002-160, 24-005-050, and 26-008-001.\n\nPublished - 1983-18.pdf
", "abstract": "Elements with even atomic number (Z) in the interval 50 \u2264\n Z \u2264 58 have been\nresolved in the cosmic radiation using the Heavy Nuclei Experiment on the\nHEAO-3 satellite. The observation that _(50)Sn and _(56)Ba are more abundant that _(52)Te\nand _(54)Xe indicates a substantial s-process contribution to the cosmic ray source. A\nsignificant abundance of _(58)Ce provides further support for this finding.", "date": "1983", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20140423-141835138", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140423-141835138", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS 8-27976" }, { "agency": "NASA", "grant_number": "NAS 8-27977" }, { "agency": "NASA", "grant_number": "NAS 8-27978" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NGR 24-005-050" }, { "agency": "NASA", "grant_number": "NGR 26-008-001" } ] }, "other_numbering_system": { "items": [ { "id": "1983-18", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Durgaprasad-N", "name": { "family": "Durgaprasad", "given": "N." } } ] }, "primary_object": { "basename": "1983-18.pdf", "url": "https://authors.library.caltech.edu/records/v1s17-qjb84/files/1983-18.pdf" }, "pub_year": "1983", "author_list": "Stone, E. C.; Garrard, T. L.; et el." }, { "id": "https://authors.library.caltech.edu/records/qw4v7-8h893", "eprint_id": 45172, "eprint_status": "archive", "datestamp": "2023-08-19 15:34:45", "lastmod": "2023-10-26 17:36:47", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Brewster-N-R", "name": { "family": "Brewster", "given": "N. R." } }, { "id": "Fickle-R-K", "name": { "family": "Fickle", "given": "R. K." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Jones-M-D", "name": { "family": "Jones", "given": "M. D." } }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Newport-B-J", "name": { "family": "Newport", "given": "B. J." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Interactions of 200 GeV Gold Nuclei in Light Elements", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1983 INSDOC.\n\nProvided by the NASA Astrophysics Data System\n\nOne of us (NRB) wishes to thank P.S. Freier for guidance during the analysis. This work was supported by NASA under contracts NAS8-27976,77,\n78 and grants NGR 05-005-160, 24-005-050, and 26-008-001.\n\nPublished - 1983-21.pdf
", "abstract": "Total charge-changing cross sections and partial cross-sections\nfor interactions of 200 GeV ^(197)_(79)Au nuclei incident\non carbon and polyethylene (CH_2) targets have been\nmeasured during a calibration of the HEA0-3 Heavy Nuclei\nExperiment. From these we infer the total and partial\ncross-sections for ^(197)_(79)Au incident on hydrogen. The effects\nof using these cross-sections in one model of cosmic ray\npropagation are illustrated. Comparisons to predictions\nusing semi-empirical formulae are shown.", "date": "1983", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20140423-143205864", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140423-143205864", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS8-27976" }, { "agency": "NASA", "grant_number": "NAS8-27977" }, { "agency": "NASA", "grant_number": "NAS8-27978" }, { "agency": "NASA", "grant_number": "NGR 05-005-160" }, { "agency": "NASA", "grant_number": "NGR 24-005-050" }, { "agency": "NASA", "grant_number": "NGR 26-008-001" } ] }, "other_numbering_system": { "items": [ { "id": "1983-21", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Durgaprasad-N", "name": { "family": "Durgaprasad", "given": "N." } } ] }, "primary_object": { "basename": "1983-21.pdf", "url": "https://authors.library.caltech.edu/records/qw4v7-8h893/files/1983-21.pdf" }, "pub_year": "1983", "author_list": "Brewster, N. R.; Fickle, R. K.; et el." }, { "id": "https://authors.library.caltech.edu/records/nmtnp-knx28", "eprint_id": 45170, "eprint_status": "archive", "datestamp": "2023-08-19 15:34:37", "lastmod": "2023-10-26 17:36:42", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Fixsen-D-J", "name": { "family": "Fixsen", "given": "D. J." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Newport-B-J", "name": { "family": "Newport", "given": "B. J." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "The Cosmic-Ray Abundances of the Platinum-Lead Elements as Measured on HEAO-3", "ispublished": "unpub", "full_text_status": "public", "note": "This work was supported in part by NASA under contracts NAS8-27976, 77, 78 and grants NGR 05-002-160, 24-005-050, and 26-008-001.\n\nPublished - 1983-19.pdf
", "abstract": "The relative abundances of elements in the charge ranges of 75 \u2264 Z \u2264 79 (platinum) and 80 \u2264 Z \u2264 83 (lead) should be a sensitive indication of the contributions of the r- and s-processes in nucleosynthesis. Data from the HEAO 3 Heavy Nuclei Experiment are used to establish abundances, relative to iron, of these elements in the cosmic radiation, as well as the ratio of 'secondary' elements, in the 62 \u2264 Z \u2264 74 range, to the primary lead-platinum elements. These results appear to suggest that either the source abundances are deficient in s-process elements or that they are not organized solely by first ionization potential. In addition, present propagation models can adequately represent the relative abundances of primary and secondary elements.", "date": "1983", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20140423-142851255", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140423-142851255", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS8-27976" }, { "agency": "NASA", "grant_number": "NAS8-27977" }, { "agency": "NASA", "grant_number": "NAS8-27978" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NGR 24-005-050" }, { "agency": "NASA", "grant_number": "NGR 26-008-001" } ] }, "other_numbering_system": { "items": [ { "id": "1983-19", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Durgaprasad-N", "name": { "family": "Durgaprasad", "given": "N." } } ] }, "primary_object": { "basename": "1983-19.pdf", "url": "https://authors.library.caltech.edu/records/nmtnp-knx28/files/1983-19.pdf" }, "pub_year": "1983", "author_list": "Fixsen, D. J.; Waddington, C. J.; et el." }, { "id": "https://authors.library.caltech.edu/records/d3jsj-c6w02", "eprint_id": 45152, "eprint_status": "archive", "datestamp": "2023-08-19 15:33:58", "lastmod": "2023-10-26 17:36:08", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "A Search for ^2H, ^3H, and ^3He in Large Solar Flares", "ispublished": "unpub", "full_text_status": "public", "note": "We thank R. Ramaty and R. McGuire for instructive discussions, and R. Vogt and G. Hurford for their many contributions to our IMP program. This work was supported in part by NASA under contract NAS5-25789 and grant NGR 05-002-160.\n\nPublished - 1983-06.pdf
", "abstract": "The results of a new study of solar flare H\nand He isotopes imply that earlier observations have\nsignificantly overestimated the abundances of ^2H, ^3H,\nand ^3He in large solar flares. We find no evidence\nthat solar flare nuclei have suffered any significant\namount of fragmentation before escaping from the Sun.", "date": "1983", "date_type": "published", "publisher": "Tata Institute of Fundamental Research", "id_number": "CaltechAUTHORS:20140423-133130136", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140423-133130136", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-25789" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1983-06", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Durgaprasad-N", "name": { "family": "Durgaprasad", "given": "N." } } ] }, "primary_object": { "basename": "1983-06.pdf", "url": "https://authors.library.caltech.edu/records/d3jsj-c6w02/files/1983-06.pdf" }, "pub_year": "1983", "author_list": "Mewaldt, R. A. and Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/qnwg3-9w591", "eprint_id": 45082, "eprint_status": "archive", "datestamp": "2023-08-19 14:39:40", "lastmod": "2023-10-26 17:33:00", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Future Studies of Planetary Rings by Space Probes", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 University of Arizona Press. Provided by the NASA Astrophysics Data System.\n\nI appreciate helpful comments by S. A. Collins, J. N. Cuzzi, J. B. Holberg, T. V. Johnson, A. L. Lane, and E. D. Miner. This work was partially supported by the National Aeronautics and Space\nAdministration.\n\nSpace Radiation Laboratory\nSRL ID #: 1982-06\n\nPublished - future_studies_of_planetary_rings.pdf
", "abstract": "In the second half of this decade, Voyager 2 will encounter Uranus and Neptune and Galileo will orbit Jupiter, returning new information on those planetary ring systems. The opportunities and capabilities for ring studies are briefly discussed.", "date": "1982", "date_type": "published", "publisher": "Observatory de Paris / Osserv. Astronomico di Palermo", "place_of_pub": "Paris, France", "pagerange": "687-703", "id_number": "CaltechAUTHORS:20140421-133622869", "isbn": "2854281004", "book_title": "Proceedings Planetary Rings Conference, IAU Colloquium", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140421-133622869", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" } ] }, "other_numbering_system": { "items": [ { "id": "1982-06", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Brahic-A", "name": { "family": "Brahic", "given": "Andre" } } ] }, "primary_object": { "basename": "future_studies_of_planetary_rings.pdf", "url": "https://authors.library.caltech.edu/records/qnwg3-9w591/files/future_studies_of_planetary_rings.pdf" }, "pub_year": "1982", "author_list": "Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/tykva-71804", "eprint_id": 45253, "eprint_status": "archive", "datestamp": "2023-08-19 14:39:44", "lastmod": "2024-01-13 15:26:55", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Concluding Remarks on the Planetary Rings Conference", "ispublished": "unpub", "full_text_status": "public", "note": "Submitted - 1982-07.pdf
", "abstract": "In the past five years ring systems have been discovered around\nUranus and Jupiter and a wealth of new data acquired about\nSaturn's rings. This vigorous observational program has been\naccompanied by renewed theoretical interest in ring systems.\nAlthough all of these topics have been addressed in papers at this\nfirst conference on planetary rings, these concluding remarks are\nfocused on some of the key aspects of Saturn's rings about which\nmore needs to be understood through further data analysis, calculations,\nand observations.", "date": "1982", "date_type": "published", "publisher": "University of Arizona Press", "place_of_pub": "Tucson, AZ", "pagerange": "763-767", "id_number": "CaltechAUTHORS:20140428-142816315", "isbn": "2854281004", "book_title": "Planetary Rings", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140428-142816315", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1982-07", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Greenberg-R", "name": { "family": "Greenberg", "given": "Richard" } }, { "id": "Brahic-A", "name": { "family": "Brahic", "given": "Andr\u00e9" } } ] }, "primary_object": { "basename": "1982-07.pdf", "url": "https://authors.library.caltech.edu/records/tykva-71804/files/1982-07.pdf" }, "pub_year": "1982", "author_list": "Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/7hq1s-aaz62", "eprint_id": 90689, "eprint_status": "archive", "datestamp": "2023-08-19 14:45:47", "lastmod": "2024-01-14 21:09:09", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "The Voyager Encounter with Uranus", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1982 Cambridge University Press. \n\nThe Voyager Project is being carried out for the National Aeronautics and Space Administration by the Jet Propulsion Laboratory of the California Institute of Technology under Contract NAS7-100.\n\nPublished - voyager_encounter_with_uranus.pdf
", "abstract": "The Voyager 2 spacecraft is targeted for an encounter with Uranus in January, 1986. In addition to a brief description of the 11 scientific investigations and the Uranian encounter geometry, the scientific capabilities of Voyager 2 are discussed for the general areas of the atmosphere, the rings, the satellites, and the magnetosphere.", "date": "1982", "date_type": "published", "publisher": "Cambridge University Press", "pagerange": "275-291", "id_number": "CaltechAUTHORS:20181107-082535959", "isbn": "9780521245739", "book_title": "Uranus and the Outer Planets", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20181107-082535959", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA/JPL/Caltech", "grant_number": "NAS7-100" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Hunt-G-E", "name": { "family": "Hunt", "given": "Garry E." } } ] }, "doi": "10.1017/S0252921100082488", "primary_object": { "basename": "voyager_encounter_with_uranus.pdf", "url": "https://authors.library.caltech.edu/records/7hq1s-aaz62/files/voyager_encounter_with_uranus.pdf" }, "pub_year": "1982", "author_list": "Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/j50jq-xz231", "eprint_id": 45139, "eprint_status": "archive", "datestamp": "2023-08-19 13:43:49", "lastmod": "2023-10-26 17:35:27", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "The Elemental and Isotopic Composition of Galactic Cosmic Rays", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright IUPAP. Provided by the NASA Astrophysical Data System.\n\nIt is a pleasure to acknowledge informative discussions\nof the data with many experimenters, including P.H. Fowler, M. Israel and L. Koch, who contributed unpublished results from their\nexperiments. I appreciate the use of unpublished calculations provided\nby S. Margolis, J.F. Ormes, R.J. Protheroe, R. Silberberg, C.J. Waddington, and M.E . Wiedenbeck. E.C. Stone made a number of helpful\nsuggestions that improved the written version of this paper. Finally,\nI thank the Centre National d'Etudes Spatiales and the Centre National de\nlE._ Recherche Scientifigue for helping to support my stay in Paris. This\nwork was supported in part by NASA under contract NAS5-20721 and grant\nNGR 05-001-160.\n\nPublished - Mewalt.pdf
", "abstract": "Galactic cosmic rays represent a directly accessible sample of\nmatter that originates outside the solar system. The element and\nisotope distribution of this high-energy material is a record that was\nmolded in the fires of nucleosynthesis in other regions of the galaxy,\nand imprinted by subsequent nuclear and electromagnetic processes that\nhave altered its composition. Recently, significant new advances have\nbeen achieved in reading this record, brought about in large part by\nthe launch of new high-resolution instrumentation for measuring the\ncharge, mass, and energy distribution of cosmic ray nuclides. In\ngeneral, the data from these new experiments are telling us what is\ndifferent about this extra-solar sample.", "date": "1981", "date_type": "published", "publisher": "CEN Saclay", "id_number": "CaltechAUTHORS:20140423-095156912", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140423-095156912", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-20721" }, { "agency": "NASA", "grant_number": "NGR 05-001-160" } ] }, "other_numbering_system": { "items": [ { "id": "1981-09", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "Mewalt.pdf", "url": "https://authors.library.caltech.edu/records/j50jq-xz231/files/Mewalt.pdf" }, "pub_year": "1981", "author_list": "Mewaldt, R. A." }, { "id": "https://authors.library.caltech.edu/records/d2pm4-ggr94", "eprint_id": 45029, "eprint_status": "archive", "datestamp": "2023-08-19 13:43:17", "lastmod": "2023-10-26 17:30:47", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Spalding-J-D", "name": { "family": "Spalding", "given": "J. D." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Vogt-R-E", "name": { "family": "Vogt", "given": "R. E." } } ] }, "title": "High Resolution Measurements of Solar Flare Isotopes", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 IUPAP. Provided by the NASA Astrophysics Data System.\n\nThis work was supported in part by NASA under contract NASS-20721 and grant NGR 05-002-160\n\nSpace Radiation Laboratory\nSRL ID #: 1981-09\n\nPublished - 1981-09.pdf
", "abstract": "The individual isotopes of C, N and O are measured in the large solar particle event of August 1978. Limits are placed on mass dependent selection effects occurring in the solar flare by fitting a simple mass fractionation law to measurements of the C, N, O and Mg isotopes, to relate the SEP composition more directly to the composition of the sun. The individual isotopes are found to be consistent with solar system abundances, and the absence of any observable fractionation for C, O and Mg leads to the conclusion that solar neon is most likely neon-A with Ne-22/Ne-20 equals 0.12.", "date": "1981", "date_type": "published", "publisher": "CEN Saclay", "id_number": "CaltechAUTHORS:20140417-151424487", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140417-151424487", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NGR-05-002-160" }, { "agency": "NASA", "grant_number": "NAS5-20721" } ] }, "other_numbering_system": { "items": [ { "id": "1981-09", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1981-09.pdf", "url": "https://authors.library.caltech.edu/records/d2pm4-ggr94/files/1981-09.pdf" }, "pub_year": "1981", "author_list": "Mewaldt, R. A.; Spalding, J. D.; et el." }, { "id": "https://authors.library.caltech.edu/records/xbjse-8sr07", "eprint_id": 45030, "eprint_status": "archive", "datestamp": "2023-08-19 13:43:21", "lastmod": "2023-10-26 17:30:49", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Spalding-J-D", "name": { "family": "Spalding", "given": "J. D." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Vogt-R-E", "name": { "family": "Vogt", "given": "R. E." } } ] }, "title": "The Isotopic Composition of Low Energy Cosmic Rays", "ispublished": "unpub", "full_text_status": "public", "keywords": "Abundance, Cosmic Rays, Heavy Nuclei, Isotopes, Boron Isotopes, Carbon Isotopes, Galactic Radiation, High Resolution, Neon Isotopes, Nitrogen Isotopes, Oxygen Isotopes", "note": "\u00a9 IUPAP. Provided by the NASA Astrophysics Data System.\n\nWe thank Dr. M.E. Wiedenbeck for the use of his GCR\npropagation calculations. This work was supported in part by NASA under contracts NASS-11066 and NASS-20721 and grant NGR 05-002-160.\n\nSpace Radiation Laboratory\nSRL ID #: 1981-10\n\nPublished - 1981-10.pdf
", "abstract": "We report new high-resolution isotope measurements of B,\nC, N, 0, and Ne nuclei with ~ 5 to ~140 MeV/nuc. These\nobservations extend the study of cosmic ray isotopes to\nlower energies than before, and provide new information\non the isotopic composition of the anomalous cosmic ray\ncomponent.", "date": "1981", "date_type": "published", "publisher": "CEN Saclay", "id_number": "CaltechAUTHORS:20140417-151530889", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140417-151530889", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-11066" }, { "agency": "NASA", "grant_number": "NAS5-20721" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1981-10", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1981-10.pdf", "url": "https://authors.library.caltech.edu/records/xbjse-8sr07/files/1981-10.pdf" }, "pub_year": "1981", "author_list": "Mewaldt, R. A.; Spalding, J. D.; et el." }, { "id": "https://authors.library.caltech.edu/records/2e5fw-vn450", "eprint_id": 45045, "eprint_status": "archive", "datestamp": "2023-08-19 13:43:40", "lastmod": "2023-10-26 17:31:21", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Fickle-R-K", "name": { "family": "Fickle", "given": "R. K." } }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } } ] }, "title": "Abundances of Cosmic Ray Nuclei Heavier than _(50)Sn", "ispublished": "unpub", "full_text_status": "public", "keywords": "Abundance, Cosmic Rays, Heavy Nuclei, Heao 3", "note": "\u00a9 1981 IUPAP.\n\nProvided by the NASA Astrophysics Data System.\n\nThis research was supported in part by NASA under contract NAS8-27976, 77, 78 and grants NGR 05-002-160, 24-005-050 and 26-008-001.\n\nSpace Radiation Laboratory\nSRL ID #: 1981-24.\n\nPublished - 1981-24.pdf
", "abstract": "Preliminary results are reported from 430 days of exposure of the heavy nuclei experiment on the HEAO-3 spacecraft. These results are confined to the heavy nuclei with Z \u2265 50 and emphasize the conclusions obtained on the relative numbers of actinides and heavy stable elements in the lead-platinum region. The extreme paucity of actinides found is inconsistent with the predictions of a cosmic ray source that is highly enriched in r-process material, but quite consistent with a source whose composition is similar to that of normal solar system material. An upper limit, at the. 95% confidence level, is placed in the ratio of nuclei with Z \u2265 88/(74 \u2264 Z \u226487) of 0.03.", "date": "1981", "date_type": "published", "publisher": "CEN Saclay", "id_number": "CaltechAUTHORS:20140417-154647949", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140417-154647949", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS8-27976" }, { "agency": "NASA", "grant_number": "NAS8-27977" }, { "agency": "NASA", "grant_number": "NAS8-27978" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NGR 24-005-050" }, { "agency": "NASA", "grant_number": "NGR 26-008-001" } ] }, "other_numbering_system": { "items": [ { "id": "1981-24", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1981-24.pdf", "url": "https://authors.library.caltech.edu/records/2e5fw-vn450/files/1981-24.pdf" }, "pub_year": "1981", "author_list": "Waddington, C. J.; Fickle, R. K.; et el." }, { "id": "https://authors.library.caltech.edu/records/bkem1-npf74", "eprint_id": 45032, "eprint_status": "archive", "datestamp": "2023-08-19 13:43:31", "lastmod": "2023-10-26 17:30:54", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Fickle-R-K", "name": { "family": "Fickle", "given": "R. K." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Abundances of Cosmic Ray Nuclei for 26 \u2264 Z \u2264 40 From HEAO-3 Heavy Nuclei Experiment", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 IUPAP. Provided by the NASA Astrophysics Data System.\n\nWe thank T. Aufrance, B. Gauld, D. Grossman, K. Krombel, and D. Mitchell for assistance in programming for data analysis; R. N. F. Walker for development of thje propagation code and S. H. Margolis and K. L. Hainebach for the program to evaluate crosssections\nfor the propagation code. The research was supported in part\nby NASA under contracts NASB-27976,77,78 and grants NGR 05-002-160, 24-005-050, and 26-008-001.\n\nSpace Radiation Laboratory\nSRL ID #: 1981-12\n\nPublished - 1981-12.pdf
", "abstract": "Individual elements in the cosmic radiation of\neven atomic number (Z)in the interval 26\u2264 Z \u2264 40\nhave been resolved and their relative abundances\nmeasured. The results are inconsistent with a\ncosmic-ray source whose composition in this charge\ninterval is dominated by r-process nucleosynthesis.", "date": "1981", "date_type": "published", "publisher": "CEN Saclay", "id_number": "CaltechAUTHORS:20140417-151754488", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140417-151754488", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS8-27976" }, { "agency": "NASA", "grant_number": "NAS8-27977" }, { "agency": "NASA", "grant_number": "NAS8-27978" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "24-005-050" }, { "agency": "NASA", "grant_number": "26-008-001" } ] }, "other_numbering_system": { "items": [ { "id": "1981-12", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1981-12.pdf", "url": "https://authors.library.caltech.edu/records/bkem1-npf74/files/1981-12.pdf" }, "pub_year": "1981", "author_list": "Klarmann, J.; Binns, W. R.; et el." }, { "id": "https://authors.library.caltech.edu/records/sp46z-c5r70", "eprint_id": 45031, "eprint_status": "archive", "datestamp": "2023-08-19 13:43:26", "lastmod": "2023-10-26 17:30:52", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Fickle-R-K", "name": { "family": "Fickle", "given": "R. K." } }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Implications of Ultraheavy Cosmic-Ray Source Composition Derived from Observations by the HEAO-3 Heavy Nuclei Experiment", "ispublished": "unpub", "full_text_status": "public", "keywords": "Abundance, Cosmic Rays, Heao 3, Heavy Nuclei, Ionization Potentials, Nuclear Fusion, Isotopes, Neutron Cross Sections, Solar System", "note": "\u00a9 IUPAP. Provided by the NASA Astrophysics Data System.\n\nThis research was supported in part by NASA under contracts\nNPSB-27976,77,78 and grants NGR 05-002-160, 24-005-050, and 26-008-001\n\nSpace Radiation Laboratory\nSRL ID #: 1981-11\n\nPublished - 1981-11.pdf
", "abstract": "We have derived the contribution of r-process\nand s-process nucleosynthesis to the Cameron\n(1980) solar system (SS) abundances for Z~33.\nIn the interval 34 ~Zs; 40 our HEA0-3 data\nextrapolated to the cosmic-ray source (CRS)\nfit the solar system mix better than r-process.\nIn the interval 26 < Z < 40 the HEA0-3 results for\nCRS/SS follow the same general correlation with\nfirst ionization potential as for the lighter\neiements although there are deviations in detail.", "date": "1981", "date_type": "published", "publisher": "CEN Saclay", "id_number": "CaltechAUTHORS:20140417-151643116", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140417-151643116", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS8-27976" }, { "agency": "NASA", "grant_number": "NAS8-27977" }, { "agency": "NASA", "grant_number": "NAS8-27978" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "24-005-050" }, { "agency": "NASA", "grant_number": "26-008-001" } ] }, "other_numbering_system": { "items": [ { "id": "1981-11", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1981-11.pdf", "url": "https://authors.library.caltech.edu/records/sp46z-c5r70/files/1981-11.pdf" }, "pub_year": "1981", "author_list": "Israel, M. H.; Klarmann, J.; et el." }, { "id": "https://authors.library.caltech.edu/records/csxfs-7a477", "eprint_id": 45027, "eprint_status": "archive", "datestamp": "2023-08-19 13:43:08", "lastmod": "2023-10-26 17:30:43", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Buffington-A", "name": { "family": "Buffington", "given": "A." } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "S. M." } } ] }, "title": "A Measurement of the Antiproton Flux in the Cosmic Rays", "ispublished": "unpub", "full_text_status": "public", "keywords": "Antiprotons, Balloon Sounding, Cosmic Rays, Proton Flux Density, Radiation Measurement, Data Recording, Energy Spectra, Spark Chambers, Upper Atmosphere", "note": "\u00a9 IUPAP. Provided by the NASA Astrophysics Data System.\n\nThis work was supported by grants NGR 05-003-553\u00b7 and NGR 05-002-160from the National Aeronautics and Space Administration.\n\nPublished - 1981-07.pdf
", "abstract": "A balloon-borne instrument has been used to detect cosmic-ray antiprotons. These are identified topologically by the appearance of annihilation prongs in a thick lead-plate spark chamber. The initial recording of the data is enriched in potential antimatter events by a selective trigger. After a small subtraction for background, 14 identified antiprotons yield a flux of 1.7 plus or minus 0.00005 antiproton/(sq m ster sec MeV) between 130 and 320 MeV at the top of the atmosphere. When combined with higher energy antiproton flux measurements, this result indicates that the antiprotons have a spectrum whose shape is the same as that of the protons, but with a magnitude reduced by a factor of 1/3000.", "date": "1981", "date_type": "published", "publisher": "CEN Saclay", "id_number": "CaltechAUTHORS:20140417-142737320", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140417-142737320", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NGR 05-003-553" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1981-07", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1981-07.pdf", "url": "https://authors.library.caltech.edu/records/csxfs-7a477/files/1981-07.pdf" }, "pub_year": "1981", "author_list": "Buffington, A. and Schindler, S. M." }, { "id": "https://authors.library.caltech.edu/records/d98jg-crh96", "eprint_id": 45028, "eprint_status": "archive", "datestamp": "2023-08-19 13:43:13", "lastmod": "2023-10-26 17:30:45", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Buffington-A", "name": { "family": "Buffington", "given": "A." } }, { "id": "Lau-K", "name": { "family": "Lau", "given": "Koon" } }, { "id": "Schindler-S-M", "name": { "family": "Schindler", "given": "Stephen M." } } ] }, "title": "Position Measurements for Heavy Ion Beams Using a Sodium Iodide Scintillator", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 IUPAP. Provided by the NASA Astrophysics Data System.\n\nThis work was supported by Grant NGR 05-002-160 of the National Space\nand Aeronautics Administration. We are grateful to W.E. Althouse,\nE.C. Stone, and R.E. Vogt for much support and helpful criticism.\n\nPublished - 1981-08.pdf
", "abstract": "A 50 cm diameter, 1.7 cm thick disc of NaI(Tl)\nscintillator has been mounted to permit edge\nviewing by four photomultipliers. Energetic\nheavy ions passing through the scintillator at\ndifferent positions cause a variation in the\ndivision of light among the photomultipliers.\nWe have achieved a performance close to the\nexpected limit for 670 MeV/n\u00b7 \u00b7neon. Calculations\nof expected response using an optical\nmodel agree well with the measurements.", "date": "1981", "date_type": "published", "publisher": "CEN Saclay", "id_number": "CaltechAUTHORS:20140417-143019805", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140417-143019805", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1981-08", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1981-08.pdf", "url": "https://authors.library.caltech.edu/records/d98jg-crh96/files/1981-08.pdf" }, "pub_year": "1981", "author_list": "Buffington, A.; Lau, Koon; et el." }, { "id": "https://authors.library.caltech.edu/records/v9w9z-6rv70", "eprint_id": 90923, "eprint_status": "archive", "datestamp": "2023-08-19 13:47:39", "lastmod": "2024-01-14 21:11:51", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Binns-W-R", "name": { "family": "Binns", "given": "W. R." }, "orcid": "0000-0001-6110-3407" }, { "id": "Fickle-R-K", "name": { "family": "Fickle", "given": "R." } }, { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Israel-M-H", "name": { "family": "Israel", "given": "M. H." }, "orcid": "0000-0002-8104-208X" }, { "id": "Klarmann-J", "name": { "family": "Klarmann", "given": "J." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Waddington-C-J", "name": { "family": "Waddington", "given": "C. J." } } ] }, "title": "Heavy Nuclei Experiment on HEAO-3", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 Reidel 1981.\n\nSupported in part by NASA Contracts NAS8-27976, 7, 8 and grants NGR 05-002-160, 24-005-050, and 26-009-001.\n\nPublished - heavy_nuclei_experiment_on_heao3.pdf
", "abstract": "The third High Energy Astronomical Observatory, HEAO-3 was launched on the 20th Sept., 1979 into a 496 km, 43.6\u00b0 orbit, and has since been successfully returning data from all three experiments on board. One of these experiments, that intended to study the heavy and ultra heavy nuclei in the cosmic radiation, is described here.", "date": "1981", "date_type": "published", "publisher": "Kluwer", "place_of_pub": "Dordrecht", "pagerange": "91-92", "id_number": "CaltechAUTHORS:20181115-131341372", "isbn": "9789400984752", "book_title": "Origin of Cosmic Rays", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20181115-131341372", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS8-27976" }, { "agency": "NASA", "grant_number": "NAS8-27977" }, { "agency": "NASA", "grant_number": "NAS8-27978" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "NASA", "grant_number": "NGR 24-005-050" }, { "agency": "NASA", "grant_number": "NGR 26-009-001" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Setti-G", "name": { "family": "Setti", "given": "Giancarlo" } }, { "id": "Speda-G", "name": { "family": "Speda", "given": "G." } }, { "id": "Wolfendale-A-W", "name": { "family": "Wolfendale", "given": "A. W." } } ] }, "doi": "10.1017/s0074180900074453", "primary_object": { "basename": "heavy_nuclei_experiment_on_heao3.pdf", "url": "https://authors.library.caltech.edu/records/v9w9z-6rv70/files/heavy_nuclei_experiment_on_heao3.pdf" }, "pub_year": "1981", "author_list": "Binns, W. R.; Fickle, R.; et el." }, { "id": "https://authors.library.caltech.edu/records/8qhb0-cs047", "eprint_id": 45077, "eprint_status": "archive", "datestamp": "2023-08-19 13:43:44", "lastmod": "2023-10-26 17:32:49", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Lin-R-P", "name": { "family": "Lin", "given": "R. P." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Van-Hollebeke-M-A-I", "name": { "family": "Van Hollebeke", "given": "M. A. I." } } ] }, "title": "The Energy Spectrum of 20 keV - 20 MeV Electrons Accelerated in Large Solar Flares", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 IUPAP. Provided by the NASA Astrophysics Data System.\n\nPublished - 1981-31.pdf
", "date": "1981", "date_type": "published", "publisher": "CEN Saclay", "id_number": "CaltechAUTHORS:20140421-131055185", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140421-131055185", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1981-31", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1981-31.pdf", "url": "https://authors.library.caltech.edu/records/8qhb0-cs047/files/1981-31.pdf" }, "pub_year": "1981", "author_list": "Lin, R. P.; Mewaldt, R. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/td99e-4aj13", "eprint_id": 45044, "eprint_status": "archive", "datestamp": "2023-08-19 13:43:35", "lastmod": "2023-10-26 17:31:18", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } }, { "id": "McDonald-F-B", "name": { "family": "McDonald", "given": "F. B." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "A Study of Temporal and Radial Dependencies of the Anomalous Helium and Oxygen Nuclei", "ispublished": "unpub", "full_text_status": "public", "keywords": "Helium, Nuclei (Nuclear Physics), Oxygen, Particle Flux Density, Primary Cosmic Rays, Radial Distribution, Solar Activity Effects, Time Dependence, Anomalies, Explorer Satellites, Particle Energy, Particle Telescopes, Pioneer 10 Space Probe", "note": "\u00a9 IUPAP. Provided by the NASA ADS.\n\nThis work was sponsored by various NASA grants at\nGSFC, UNH, and Caltech.\n\nPublished - 1981-23.pdf
", "abstract": "The intensity of the low energy anomalous Helium and Oxygen\ncomponents has been continuously monitored by telescopes on the\nPioneer 10 and IMP 7 and 8 spacecraft since 1972. After a period\nof relatively small temporal changes at earth between 1972 and\n1978, during which it was possible to study the radial gradients\nof these components out to ~ 15 AU, large temporal changes were\nobserved in 1978-1980 associated with the onset of the new solar\nmodulation cycle. During this time period the anomalous He and 0\nintensities at Pioneer 10 have decreased by a factor > 10, however,\nboth anomalous components were still present in the summer\nof 1980 at ~ 20AU. At the earth similar large intensity changes\nhave occurred. At Pioneer 10 the relative modulation of He nuclei\nis ~1.4x that of 0 nuclei at the same energy/nuc during this time\nperiod.", "date": "1981", "date_type": "published", "publisher": "CEN Saclay", "id_number": "CaltechAUTHORS:20140417-154502318", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140417-154502318", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" } ] }, "other_numbering_system": { "items": [ { "id": "1981-23", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1981-23.pdf", "url": "https://authors.library.caltech.edu/records/td99e-4aj13/files/1981-23.pdf" }, "pub_year": "1981", "author_list": "Webber, W. R.; McDonald, F. B.; et el." }, { "id": "https://authors.library.caltech.edu/records/pwndk-2qa94", "eprint_id": 45018, "eprint_status": "archive", "datestamp": "2023-08-19 12:53:29", "lastmod": "2024-01-13 15:26:38", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" } ] }, "title": "Spacecraft Measurements of the Elemental and Isotopic Composition of Solar Energetic Particles", "ispublished": "unpub", "full_text_status": "restricted", "note": "This work has benefited greatly from suggestions and comments by my colleagues at Caltech, including W. R. Cook, J. D. Spalding, E. C. Stone, and R. E. Vogt. I also acknowledge helpful discussions with G. M. Mason, R. E. McGuire, and W. R. Webber. I am grateful to the following for providing experimental data prior to publication: W. R. Cook (CRS experiments on Voyager 1 and 2); D. C. Hamilton and G. Gloeckler (LECP experiments on Voyager 1 and 2); G. M. Mason (University of Maryland/Max-Planck-Insitut experiment on IMP-8); and R. E. McGuire (Goddard Space Flight Center experiment on IMP-7 and 8). This work was supported in part by NASA under Contract NAS5-20721 and grant NGR 05-002-160.", "abstract": "Within the past few years, instruments flown on satellites and space probes have made significant progress in measuring the elemental and isotopic composition of energetic heavy nuclei accelerated in solar flares. This paper discusses these new observations, focusing on: (1) the energy dependence of the elemental composition at energies \u2265 1 Me V/nucleon; (2) flare to flare variations in the composition; and (3) comparisons of the average solar particle abundances (2 \u2264 Z \u2264 28) with other measures of the solar composition, including photospheric, coronal, and solar wind observations. These comparisons have led to the suggestion that solar flares sample the composition of the corona. Isotopic measurements of heavy solar flare nuclei have recently added a new dimension to these studies. In particular, the isotopic composition of solar flare neon has been found to be significantly different from that measured in the solar wind, but consistent with the meteoritic component neon-A.", "date": "1980", "date_type": "published", "publisher": "Pergamon Press", "id_number": "CaltechAUTHORS:20140417-140336777", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140417-140336777", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-20721" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1980-01", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Robertson-P-C", "name": { "family": "Robertson", "given": "P. C." } }, { "id": "Pepin-R-O", "name": { "family": "Pepin", "given": "R. O." } }, { "id": "Eddy-J-A", "name": { "family": "Eddy", "given": "J. A." } }, { "id": "Merrill-R-B", "name": { "family": "Merrill", "given": "R. B." } } ] }, "pub_year": "1980", "author_list": "Mewaldt, R. A." }, { "id": "https://authors.library.caltech.edu/records/6cqpv-q9568", "eprint_id": 45008, "eprint_status": "archive", "datestamp": "2023-08-19 11:51:47", "lastmod": "2024-01-13 15:26:36", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Bieber-J-W", "name": { "family": "Bieber", "given": "J. W." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Energetic Electron Bursts in the Magnetopause Electron Layer and in Interplanetary Space", "ispublished": "unpub", "full_text_status": "public", "note": "We thank L. A. Frank for providing us with Imp-8 Lepedea energy-time spectrograms. We also thank R. P. Lepping and N. F. Ness for providing us with Imp-8 magnetometer data through J. H. King of the National Space Science Data Center. We are grateful to R. E. Vogt, who has been closely associated with this investigation, and to W. E. Althouse, D. N. Baker, G. J. Hurford, J. E. Lupton and R. A. Mewaldt, who made significant contributions to various phases of this program. This work was supported in part by the National Aeronautics and Space Administration under contract NAS5-11066 and grant NGR 05-002-160.\n\nSubmitted - 1979-06.pdf
", "abstract": "The magnetopause electron layer in the distant magnetotail is an annular region encircling the magnetopause in which bursts of tailward-streaming energetic (E > 200 keV) electrons are almost continually present. Sunward-streaming electron bursts with time scales and energy spectral indices similar to those of layer bursts are sometimes observed in interplanetary space upstream of the earth. Evidence is presented to show that the layer bursts and the interplanetary bursts have a common source. With the aid of a new coordinate system -- geocentric interplanetary medium (GIPM) coordinates -- appropriate for describing the access of energetic charged p[articles in the inner magnetosheath to a spacecraft located in interplanetary space, it is shown that the interplanetary bursts occur predominately on the sunward extension of the field lines associated with the magnetopause electron layer.", "date": "1979", "date_type": "published", "publisher": "European Space Agency", "id_number": "CaltechAUTHORS:20140417-132433188", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140417-132433188", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-11066" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1979-06", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Battrick-B", "name": { "family": "Battrick", "given": "B." } } ] }, "primary_object": { "basename": "1979-06.pdf", "url": "https://authors.library.caltech.edu/records/6cqpv-q9568/files/1979-06.pdf" }, "pub_year": "1979", "author_list": "Bieber, J. W. and Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/6kwez-egq12", "eprint_id": 45012, "eprint_status": "archive", "datestamp": "2023-08-19 11:51:56", "lastmod": "2023-10-26 17:30:10", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Spalding-J-D", "name": { "family": "Spalding", "given": "J. D." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Vogt-R-E", "name": { "family": "Vogt", "given": "R. E." } } ] }, "title": "Satellite Measurements of the Isotopic Composition of Galactic Cosmic Rays", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright IUPAP. Provided by the NASA Astrophysical Data System.\n\nW. E. Althouse, A. C. Cu11111ings and T. L. Garrard\nmade significant contributions to the development of HIST. We are grateful to\nthe Heckman/Greiner group and the Bevalac staff at Lawrence Berkeley Laboratory\nfor making the heavy-ion calibrations possible. We have benefited from discussions\nwith W. A. Fowler, M. E. Wiedenbeck and S. E. Woosley. This work\nwas supported in part by NASA under Contract NAS5-20721 and Grant\nNGR 05-002-160.\n\nPublished - 1979-09.pdf
", "abstract": "The individual isotopes of galactic cosmic ray Ne, Mg, and\nSi at ~100 MeV/nucleon have been clearly resolved with an\nrms mass resolution of ~0.20 amu. Our results suggest that\nthe cosmic ray source is enriched in ^(22)Ne, ^(25)Mg, and ^(26)Mg\nwhen compared to the solar system. In particular, we find\n(^(25)Mg + ~^(6)Mg)/^(24)Mg = 0.49+/-.2314 compared to the solar system value of 0.27, suggesting t~at the cosmic ray source and\nsolar system material were synthesized under different\nconditions.", "date": "1979", "date_type": "published", "publisher": "University of Tokyo", "id_number": "CaltechAUTHORS:20140417-134942135", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140417-134942135", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-20721" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1979-09", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Miyake-S", "name": { "family": "Miyake", "given": "S." } } ] }, "primary_object": { "basename": "1979-09.pdf", "url": "https://authors.library.caltech.edu/records/6kwez-egq12/files/1979-09.pdf" }, "pub_year": "1979", "author_list": "Mewaldt, R. A.; Spalding, J. D.; et el." }, { "id": "https://authors.library.caltech.edu/records/gpe2a-mmg36", "eprint_id": 45011, "eprint_status": "archive", "datestamp": "2023-08-19 11:51:52", "lastmod": "2023-10-26 17:30:07", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cook-W-R", "name": { "family": "Cook", "given": "W. R." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Vogt-R-E", "name": { "family": "Vogt", "given": "R. E." } }, { "id": "Trainor-J-H", "name": { "family": "Trainor", "given": "J. H." } }, { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } } ] }, "title": "Elemental Composition of Solar Energetic Particles in 1977 and 1978", "ispublished": "unpub", "full_text_status": "public", "keywords": "Chemical Composition, Energetic Particles, Nuclei (Nuclear Physics), Solar Flares, Solar Radiation, Abundance, Oxygen, Photosphere, Voyager 1 Spacecraft, Voyager 2 Spacecraft", "note": "Copyright IUPAP.\n\nThis work has been supported in part by the National Aeronautics and Space Administration under contract NAS7-100 and grant NGR-05-002-160.\n\nPublished - 1979-08.pdf
", "abstract": "Measurements of the elemental composition of energetic nuclei with atomic numbers between 2 and 28 from seven major solar flares from September 1977 to May 1978 are presented. The abundance observations were made with the Low Energy Telescope systems of the cosmic ray detector systems on board the Voyager 1 and 2 spacecraft between 1 and 3 AU. Examination of the abundance ratios of the flare nuclei relative to oxygen reveals significant variations from event to event and between energetic nuclei and photospheric abundances, with an average composition, except for C and N, very similar to that of the galactic cosmic ray source. For the four flare events for which the elemental abundances exhibit no significant energy dependence in the energy range observed, it is found that the enhancement of energetic nuclei relative to their photospheric abundance are similar and not monotonic with atomic number, with the metallic nuclei showing an enhancement factor of approximately 5 and the volatiles showing one closer to 1.", "date": "1979", "date_type": "published", "publisher": "University of Tokyo Press", "id_number": "CaltechAUTHORS:20140417-134800183", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140417-134800183", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS7-100" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1979-08", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Miyake-S", "name": { "family": "Miyake", "given": "S." } } ] }, "primary_object": { "basename": "1979-08.pdf", "url": "https://authors.library.caltech.edu/records/gpe2a-mmg36/files/1979-08.pdf" }, "pub_year": "1979", "author_list": "Cook, W. R.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/gqnc2-pqg16", "eprint_id": 45017, "eprint_status": "archive", "datestamp": "2023-08-19 11:52:01", "lastmod": "2023-10-26 17:30:22", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Webber-W-R", "name": { "family": "Webber", "given": "W. R." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Vogt-R-E", "name": { "family": "Vogt", "given": "R. E." } } ] }, "title": "The Elemental Composition of Quiet Time Low Energy Cosmic Rays Measured on the Voyager Spacecraft", "ispublished": "unpub", "full_text_status": "public", "note": "Copyright IUPAP.\n\nPublished - 1979-14.pdf
", "abstract": "We have used the large collecting area of the Voyager telescopes to obtain greatly improved statistics on the elemental composition of quiet time low energy cosmic rays above ~3MeV/nuc. Three quiet time\nperiods totaling 115 days between August, 1977 and February, 1978 are\nused. These quiet times are further subdivided into still quieter\nperiods totaling 47 days. At low energies, the most prominent feature\nis the anomalous component which has a peak intensity at ~6 MeV/nuc.\nIt is observed most prominently for N, 0 and Ne nuclei, but we believe\nit has been identified for the first time for C, Mg and Si nuclei as\nwell at a much lower intensity level. This component undergoes strong\nsolar modulation effects, and also for 0 nuclei at least, shows 27 day\nenhancements associated with enhanced intensities of ~0.5 MeV protons", "date": "1979", "date_type": "published", "publisher": "University of Tokyo Press", "id_number": "CaltechAUTHORS:20140417-140144607", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140417-140144607", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1979-14", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Miyake-S", "name": { "family": "Miyake", "given": "S." } } ] }, "primary_object": { "basename": "1979-14.pdf", "url": "https://authors.library.caltech.edu/records/gqnc2-pqg16/files/1979-14.pdf" }, "pub_year": "1979", "author_list": "Webber, W. R.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/9bwrf-jm836", "eprint_id": 44921, "eprint_status": "archive", "datestamp": "2023-08-19 11:05:17", "lastmod": "2024-01-13 15:26:27", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Voyager Investigation of the Saturnian System", "ispublished": "unpub", "full_text_status": "public", "note": "The Voyager Project is being carried out for the National Aeronautics and \nSpace Administration by the Jet Propulsion Laboratory of the California Institute of \nTechnology under contract NAS 7-100.\n\nPublished - 1978-04.pdf
", "abstract": "A brief review of the objectives and capabilities of the Voyager mission at Saturn is provided. In addition to a description of the eleven Voyager investigations and the Saturn encounter geometry, the scientific capabilities are discussed in the areas of atmospheric, satellite, magnetospheric, and ring studies.", "date": "1978", "date_type": "published", "publisher": "NASA", "id_number": "CaltechAUTHORS:20140414-110111854", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140414-110111854", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "JPL/Caltech" }, { "agency": "NASA", "grant_number": "NAS 7-100" } ] }, "other_numbering_system": { "items": [ { "id": "1978-04", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Hunten-D-M", "name": { "family": "Hunten", "given": "Donald M." } }, { "id": "Morrison-D", "name": { "family": "Morrison", "given": "David" } } ] }, "primary_object": { "basename": "1978-04.pdf", "url": "https://authors.library.caltech.edu/records/9bwrf-jm836/files/1978-04.pdf" }, "pub_year": "1978", "author_list": "Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/199rn-3qx28", "eprint_id": 44916, "eprint_status": "archive", "datestamp": "2023-08-19 10:21:01", "lastmod": "2023-10-26 17:24:56", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wibberenz-G", "name": { "family": "Wibberenz", "given": "G." } }, { "id": "Kunow-H", "name": { "family": "Kunow", "given": "H." } }, { "id": "Green-G", "name": { "family": "Green", "given": "G." } }, { "id": "M\u00fcller-Mellin-R", "name": { "family": "M\u00fcller-Mellin", "given": "R." } }, { "id": "Witte-M", "name": { "family": "Witte", "given": "M." } }, { "id": "Hempe-H", "name": { "family": "Hempe", "given": "H." } }, { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Vogt-R-E", "name": { "family": "Vogt", "given": "R. E." } }, { "id": "Reinhard-R", "name": { "family": "Reinhard", "given": "R." } } ] }, "title": "Radial Development of a Solar Cosmic Ray Event Between 0.4 and 1 AU on March 3, 1975 as Observed from HELIOS 1 and IMP-7", "ispublished": "unpub", "full_text_status": "public", "note": "Published - 1977-10.pdf
", "abstract": "A micro event was observed by cosmic ray particle experiments on board of Helios 1 and IMP on March 3, 1975. At the time of the event Helios 1 was at a radial distance of 0.4 AU from the sun. The IMP space craft near earth was connected via interplanetary magnetic fieldline with a solar region about 7\u00b0 west of Helios. The roots of both fieldlines were well within the fast propagation region of two active centers which were capable to accelerate solar particles. This relative position of the two space craft allows to separate solar injection and interplanetary propagation processes and to check existing models. The observed intensity-time profiles and anisotropies require a finite solar injection process; from a comparison of the event profiles and the absolute intensities at the two space craft the amount of interplanetary scattering is derived.", "date": "1977", "date_type": "published", "publisher": "Bulgarian Academy of Sciences", "id_number": "CaltechAUTHORS:20140414-105007732", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140414-105007732", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1977-10", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1977-10.pdf", "url": "https://authors.library.caltech.edu/records/199rn-3qx28/files/1977-10.pdf" }, "pub_year": "1977", "author_list": "Wibberenz, G.; Kunow, H.; et el." }, { "id": "https://authors.library.caltech.edu/records/mvwzq-28j22", "eprint_id": 44901, "eprint_status": "archive", "datestamp": "2023-08-19 10:20:56", "lastmod": "2023-10-26 17:22:10", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Kunow-H", "name": { "family": "Kunow", "given": "H." } }, { "id": "Wibberenz-G", "name": { "family": "Wibberenz", "given": "G." } }, { "id": "Green-G", "name": { "family": "Green", "given": "G." } }, { "id": "M\u00fcller-Mellin-R", "name": { "family": "M\u00fcller-Mellin", "given": "R." } }, { "id": "Witte-M", "name": { "family": "Witte", "given": "M." } }, { "id": "Hempe-H", "name": { "family": "Hempe", "given": "H." } } ] }, "title": "Simultaneous Observations of Cosmic Ray Particles in a Corotating Interplanetary Structure at Different Solar Distances between 0.3 and 1 AU from HELIOS 1 and 2 and IMP 7 and 8", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1977 Bulgarian Academy of Sciences.\n\nProvided by the NASA Astrophysics Data System.\n\nPublished - 1977-06.pdf
", "abstract": "From December 1975 to June 1976 we observed\nan evolving recurrent proton enhancement with IMP 7/8\nand Helios 1/2 at different distances from the sun. The\ncorotating character is established over 4 solar rotations.\nDue to the unique constellation in March 1976 simultaneous\nmeasurements were possible which allowed a study of the\nradial development undisturbed by temporal effects. The\nintensity variation of the ~4 - 13 MeV protons between\n0.43 and 1 AU revealed a sudden increase to a large positive gradient (+329 %/AU) in the leading edge of the\nevent. This value is consistent with a major source outside\n1 AU. We suggest an interplanetary acceleration which\nbecomes sufficiently effective within a fast solar wind\nstream.", "date": "1977", "date_type": "published", "publisher": "Bulgarian Academy of Sciences", "id_number": "CaltechAUTHORS:20140411-155959876", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140411-155959876", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1977-06", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Christov-C-Y", "name": { "family": "Christov", "given": "C. Ya" } } ] }, "primary_object": { "basename": "1977-06.pdf", "url": "https://authors.library.caltech.edu/records/mvwzq-28j22/files/1977-06.pdf" }, "pub_year": "1977", "author_list": "Kunow, H.; Wibberenz, G.; et el." }, { "id": "https://authors.library.caltech.edu/records/835m0-hvy22", "eprint_id": 44866, "eprint_status": "archive", "datestamp": "2023-08-19 09:30:57", "lastmod": "2023-10-26 17:00:44", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Vidor-S-B", "name": { "family": "Vidor", "given": "S. B." } }, { "id": "Vogt-R-E", "name": { "family": "Vogt", "given": "R. E." } } ] }, "title": "The Elemental Composition of 4-30 MeV/nuc Cosmic Ray Nuclei with 1 \u2264 Z \u2264 8", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1975 MPE.\n\nProvided by the NASA Astrophysics Data System.\n\nThis work was supported in part by the National\nAeronautics and Space Administration under Contract NAS5-11066 and Grant\nNGR 05-002-160.\n\nPublished - 1975-10.pdf
", "abstract": "Recent observations of low energy cosmic rays have shown\nenhanced fluxes of nitrogen and oxygen relative to other\nelements in the ~8-30 MeV/nuc energy interval. We have\nextended the measurements of lithium through oxygen down\nto ~ 4 MeV/nuc with the Caltech Electron/Isotope Spectrometers\non IMP-7 and -8 during solar quiet periods from October\n1972 to September 1974. We find no evidence for significant\nenhancements of Li, Be, B. or C, which are found to have\nenergy spectra consistent with those expected from the adiabatic\ndeceleration of higher energy galactic cosmic rays.\nThe He, N, and O fluxes are greatly enhanced when compared\nto the other elements, with relative abundances of O/He\n~ 0.25, O/B ~ 100, and O/C ~ 30 at ~ 5 to 12.5 MeV/nuc.", "date": "1975-08", "date_type": "published", "publisher": "Max Planck Gesellschaft", "id_number": "CaltechAUTHORS:20140410-134228705", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140410-134228705", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-11066" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1975-10", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1975-10.pdf", "url": "https://authors.library.caltech.edu/records/835m0-hvy22/files/1975-10.pdf" }, "pub_year": "1975", "author_list": "Mewaldt, R. A.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/pnf8x-0vf45", "eprint_id": 44819, "eprint_status": "archive", "datestamp": "2023-08-19 09:24:14", "lastmod": "2024-01-13 15:26:18", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Methods for the Determination of Z and M Using dE/dx, \u010cerenkov, and Total Energy Measurements", "ispublished": "unpub", "full_text_status": "public", "note": "Invited paper presented at the ESRO workshop on \"Research Goals for Cosmic Ray Astrophysics in the 1980's\", Frascati, Italy,\n24, 25 October 1974.\n\nAccepted Version - 1974-04.pdf
", "abstract": "The current status of mass (M) and charge (Z) measurements are reviewed for cosmic ray nuclides, and an estimation is made of their possible status by 1980. The determination of M using dE/dx-E and C.E techniques is discussed, and typical instrument characteristics are described. The determination of Z is discussed for ultraheavy cosmic rays using the dE/dx-C technique.", "date": "1975-05", "date_type": "published", "publisher": "European Space Research Organisation", "id_number": "CaltechAUTHORS:20140409-103819798", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140409-103819798", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1974-04", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Nguyen-T-D", "name": { "family": "Nguyen", "given": "T. D." } }, { "id": "Battrick-B-T", "name": { "family": "Battrick", "given": "B. T." } } ] }, "primary_object": { "basename": "1974-04.pdf", "url": "https://authors.library.caltech.edu/records/pnf8x-0vf45/files/1974-04.pdf" }, "pub_year": "1975", "author_list": "Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/x5y3m-6z922", "eprint_id": 44865, "eprint_status": "archive", "datestamp": "2023-08-19 09:12:10", "lastmod": "2023-10-26 17:00:42", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Vogt-R-E", "name": { "family": "Vogt", "given": "R. E." } } ] }, "title": "Implications of Time Variations for the Origin of Low Energy Cosmic Ray Nitrogen and Oxygen Nuclei", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1975 MPE.\n\nProvided by the NASA Astrophysics Data System.\n\nThis work was supported in part by the National\nAeronautics and Space Administration under Contract NAS5-11066 and Grant\nNGR 05-002-160.\n\nPublished - 1975-09.pdf
", "abstract": "We report observations of time variations in the quiet time\nintensity of 5-27 MeV/nuc nitrogen and oxygen and 13-25 MeV/nuc\nhelium nuclei, obtained with the Caltech Electron/Isotope\nSpectrometers on IMP 7 and 8. We find no significant correlation\nof the O variations with variations in the low intensity\nfluxes of 1-2 MeV solar protons. However, we do find the O intensity\nto be well correlated with the modulation of galactic\ncosmic rays as measured by neutron monitors. When compared with\nthe neutron monitor, the factor of ~ 3 change in the 0 intensity\nduring 1972 through 1974 is consistent with the factor of ~ 30\nincrease observed since 1969. These observations imply that\nthe enhanced low energy N and O fluxes are not of solar origin,\nbut originate far enough from the sun that they undergo substantial\nmodulation and have significantly increased access to\n1 AU at times of minimum solar modulation. It may be possible\nto determine the charge state of the He and O by comparing their\ntime variations. The He and O variations are strongly correlated,\nand both exhibit similar hysteresis effects when compared to the\nneutron monitor.", "date": "1975", "date_type": "published", "publisher": "Max Planck Gesellschaft", "id_number": "CaltechAUTHORS:20140410-134023645", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140410-134023645", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-11066" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1975-09", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1975-09.pdf", "url": "https://authors.library.caltech.edu/records/x5y3m-6z922/files/1975-09.pdf" }, "pub_year": "1975", "author_list": "Mewaldt, R. A.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/wsnsz-mqg27", "eprint_id": 44862, "eprint_status": "archive", "datestamp": "2023-08-19 09:12:01", "lastmod": "2023-10-26 17:00:37", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hurford-G-J", "name": { "family": "Hurford", "given": "G. J." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Vogt-R-E", "name": { "family": "Vogt", "given": "R. E." } } ] }, "title": "Observations of Hydrogen and Helium Isotopes in Solar Cosmic Rays", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1975 MPE.\nProvided by the NASA Astrophysics Data System.\nThis work was supported in part by the National\nAeronautics and Space Administration under contract NAS5-11066 and grant\nNGR 05-002-160.\n\nPublished - 1975-06.pdf
", "abstract": "Hydrogen and helium isotopes in solar cosmic rays between 1.2\nand 15.0 MeV/nuc have been observed with the Ca1tech Electron/Isotope Spectrometer on IMP-7. During 1973 three \"^3He rich\nevents\", containing more ^3He than ^2H or ^3H, were observed on\n14 February, 29 June, and 5 September. The latter event was\nparticularly interesting in that (^3He/^4He) ~ 6 and (^3He/^1H)\n~ 1. Excluding these three events, flare-averaged ratios\nfor ^2H/^1H and ^3H/^1H have been obtained for energies below\n8.6 MeV/nuc. When compared with the ratios at higher energies,\nthe observed energy dependence is consistent with the thin\ntarget model of Ramaty and Kozlovsky with a relativistic pathlength\nof ~ 1 g/cm^2. Flare-averaged ^3He results reported here\nmight suggest a somewhat longer pathlength.", "date": "1975", "date_type": "published", "publisher": "Max Planck Gesellschaft", "id_number": "CaltechAUTHORS:20140410-133320235", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140410-133320235", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-11066" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1975-06", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1975-06.pdf", "url": "https://authors.library.caltech.edu/records/wsnsz-mqg27/files/1975-06.pdf" }, "pub_year": "1975", "author_list": "Hurford, G. J.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/p922y-hh635", "eprint_id": 44852, "eprint_status": "archive", "datestamp": "2023-08-19 09:11:52", "lastmod": "2023-10-26 17:00:14", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Vogt-R-E", "name": { "family": "Vogt", "given": "R. E." } } ] }, "title": "The Isotopic Composition of Hydrogen and Helium in Low Energy Cosmic Rays", "ispublished": "unpub", "full_text_status": "public", "note": "This work was supported in part by NASA under contract\nNAS5-11066 and Grant NGR 05-002-160. G. J. Hurford made important contributions\nto a number of aspects of this work.\n\nPublished - 1975-04.pdf
", "abstract": "The Caltech Electron/Isotope Spectrometer on IMP-7 has been\nused to identify the isotopes ^2H and ^3He in low energy cosmic\nrays during solar quiet periods from October 1972 to October\n1974. These observations cover the energy intervals 5 - 29\nMeV/nuc for ^2H and 7 - 50 MeV/nuc for ^3He. The energy spectra\nof ^1H, ^2H and ^3He all fall rapidly with decreasing energy,\ngiving ^2H/ ^1H and ^3He/ ^1H ratios essentially independent of\nenergy as expected from adiabatic acceleration. The measured\n^4He spectrum, however, was essentially flat over this energy\ninterval, and therefore the ^2H/^4He ratio observed at 1 AU is\nnot simply related to the interstellar abundances of these\nnuclei. However, comparisons of the ^2H/^1H and ^3He/^1H ratios\nwith calculated spectra are possible.", "date": "1975", "date_type": "published", "publisher": "Max Planck Gesellschaft", "id_number": "CaltechAUTHORS:20140410-103751097", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140410-103751097", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-11066" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1975-04", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1975-04.pdf", "url": "https://authors.library.caltech.edu/records/p922y-hh635/files/1975-04.pdf" }, "pub_year": "1975", "author_list": "Mewaldt, R. A.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/1xg1h-45329", "eprint_id": 44851, "eprint_status": "archive", "datestamp": "2023-08-19 09:11:48", "lastmod": "2023-10-26 17:00:11", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Vogt-R-E", "name": { "family": "Vogt", "given": "R. E." } } ] }, "title": "The Quiet Time Spectra of Low Energy Hydrogen and Helium Nuclei", "ispublished": "unpub", "full_text_status": "public", "note": "This work was supported in part by the National Aeronautics and Space Administration under Contract NAS5-11066 and Grant NGR 05-002-160.\n\nPublished - 1975-03.pdf
", "abstract": "Measurements of the 1972-1973 quiet time hydrogen and helium spectra from 1.3-40 MeV/nuc are discussed. For both spectra the relative-intensity minimum occurs at lower energies than those reported for earlier years. There is no evidence of a low energy turnup in the He spectrum down to 2.4 MeV/nuc. The spectra indicate that the galactic component dominates down to about 10 MeV; a stable, non-solar He-4 component extends from higher energies down to about 2.4 MeV/nuc. At lower energies the periods of minimum H and He intensity do not coincide, and the relative abundance of H and He at 1.3-2.3 MeV/nuc is variable, with H/He ratios ranging from about 3 to about 10. The observations suggest that the 1.3-2.3 MeV/nuc protons and alphas are of solar origin.", "date": "1975", "date_type": "published", "publisher": "Max Planck Gesellschaft", "id_number": "CaltechAUTHORS:20140410-103547538", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140410-103547538", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-11066" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1975-03", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1975-03.pdf", "url": "https://authors.library.caltech.edu/records/1xg1h-45329/files/1975-03.pdf" }, "pub_year": "1975", "author_list": "Mewaldt, R. A.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/jtvbn-ehd30", "eprint_id": 44820, "eprint_status": "archive", "datestamp": "2023-08-19 09:11:43", "lastmod": "2023-10-26 16:58:35", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Vogt-R-E", "name": { "family": "Vogt", "given": "R. E." } } ] }, "title": "A Search for Solar Flare Positrons", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1975 MPE.\nProvided by the NASA Astrophysics Data System.\nThis work was supported in part by the National\nAeronautics and Space Administration under Contract NAS5-11066 and Grant NGR 05-002-160.\n\nPublished - 1975-02.pdf
", "abstract": "The detection of solar \u03b3-ray line emission and observations of\nthe isotopes ^2H, ^3H and ^3He in solar cosmic rays provide direct\nevidence for the occurrence of high energy nuclear reactions in\nsolar flare events. Appreciable numbers of other reaction products,\nincluding positrons with energies near ~ 1 MeV, should\nalso be produced in such events. We have searched for positrons\nin the 0.16-1.6 MeV energy interval during 5 \"^3He rich\" solar\nparticle events observed by the Caltech Electron/Isotope Spectrometers\non IMP 7 and 8. Based on calculations of positron and ^3He\nproduction at the sun, and using a simplified model of interplanetary\npropagation, we might expect comparable fluences of\npositrons and ^3He to be observed. Summing over these 5 events,\nhowever, we find the 0.16 to 1.6 MeV positron fluence to be\n< 10% of the > 1 MeV/nuc ^3He fluence. This suggests that other\nprocesses, such as preferential trapping by the solar magnetic\nfield, may be important.", "date": "1975", "date_type": "published", "publisher": "Max Planck Gesellschaft", "id_number": "CaltechAUTHORS:20140409-104148866", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140409-104148866", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-11066" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1975-02", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1975-02.pdf", "url": "https://authors.library.caltech.edu/records/jtvbn-ehd30/files/1975-02.pdf" }, "pub_year": "1975", "author_list": "Mewaldt, R. A.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/9cwm2-e6m02", "eprint_id": 44864, "eprint_status": "archive", "datestamp": "2023-08-19 09:12:06", "lastmod": "2023-10-26 17:00:40", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Vogt-R-E", "name": { "family": "Vogt", "given": "R. E." } } ] }, "title": "The Quiet Time Flux of 0.16-1.6 MeV Cosmic Ray Positrons", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1975 MPE. \nProvided by the NASA Astrophysics Data System.\n\nThis work was supported in part by the National Aeronautics\nand Space Administration under Contract NAS5-11066 and Grant NGR 05-002-160.\n\nPublished - 1975-08.pdf
", "abstract": "Measurements of the cosmic ray positron\nflux near ~ 1 MeV are of interest because\nof possible contributions in this energy\nregion from \u03b2-decay sources. Previously\nwe reported (Hurford et al.,1973) an\nupper limit for the quiet time positron flux\nat ~1 MeV of ~2x10^(-3) cm^(-2)\u2022sec^(-1)\u2022sr^(-1)\u2022Mev^(-1),\nbased on a preliminary analysis of data from\nthe Caltech Electron/Isotope Spectrometer\non IMP-7. The method of positron detection\nis discussed in Mewaldt et. al. (1975). Our\nIMP-8 instrument has somewhat improved positron\ndetection efficiency and includes an\nanalysis mode that allows a determination\nof the rate of background events with positron-\nlike signatures. Subtraction of this\nbackground contribution and the accumulation\nof additional data with improved statistical\naccuracy from both instruments shows that\nless than 30% of the positron-like events\nare due to positrons. This results in the\nnew upper limits to the 0.16 to 1.6 MeV\npositron flux shown in Figure 1. These new\nupper limits are a factor of ~ 2 lower than\nthose we reported previously. Thus we find\nno evidence for ~ 1 MeV positrons which might\nresult from the \u03b2-decay of radioactive interstellar\nsecondaries or the decay of ^(56)Co in\nsupernovae.", "date": "1975", "date_type": "published", "publisher": "Max Planck Gesellschaft", "id_number": "CaltechAUTHORS:20140410-133715368", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140410-133715368", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-11066" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1975-08", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1975-08.pdf", "url": "https://authors.library.caltech.edu/records/9cwm2-e6m02/files/1975-08.pdf" }, "pub_year": "1975", "author_list": "Mewaldt, R. A.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/34nre-3pe36", "eprint_id": 44853, "eprint_status": "archive", "datestamp": "2023-08-19 09:11:57", "lastmod": "2023-10-26 17:00:16", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Mewaldt-R-A", "name": { "family": "Mewaldt", "given": "R. A." }, "orcid": "0000-0003-2178-9111" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Vidor-S-B", "name": { "family": "Vidor", "given": "S. B." } }, { "id": "Vogt-R-E", "name": { "family": "Vogt", "given": "R. E." } } ] }, "title": "Isotopic Composition of the Anomalous Low Energy Cosmic Ray Nitrogen and Oxygen", "ispublished": "unpub", "full_text_status": "public", "note": "Published - 1975ICRC____1__349M.pdf
", "abstract": "The isotopic composition of the enhanced fluxes of cosmic ray nitrogen and oxygen observed below 30 MeV/nuc is of interest, whether the nuclei are a sample from some nearby galactic source region that is underabundant in carbon, or a sample of the neutral interstellar medium. Enhanced fluxes in the 6 to 12 MeV/nuc energy interval were measured over a two year period with the Caltech Electron/Isotope Spectrometer on IMP-7. The observed low-energy nitrogen and oxygen nuclei are predominantly N-14 and O-16, with upper limits (84% confidence level) of N-15/N below 0.26, O-17/0 below 0.13, and O-18/0 below 0.12 for other isotopes in the 6-12 MeV/nuc energy interval. The implications of these results for the origin of the enhanced nitrogen and oxygen fluxes are discussed.", "date": "1975", "date_type": "published", "publisher": "Max Planck Gesellschaft", "id_number": "CaltechAUTHORS:20140410-104006679", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140410-104006679", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "1975-07", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1975ICRC____1__349M.pdf", "url": "https://authors.library.caltech.edu/records/34nre-3pe36/files/1975ICRC____1__349M.pdf" }, "pub_year": "1975", "author_list": "Mewaldt, R. A.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/fj6r2-n8b43", "eprint_id": 44811, "eprint_status": "archive", "datestamp": "2023-08-19 08:12:44", "lastmod": "2023-10-26 16:58:12", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Vogt-R-E", "name": { "family": "Vogt", "given": "R. E." } } ] }, "title": "Analytic Approximations in the Study of the Solar Modulation of Electrons", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1973 University of Colorado.\n\nProvided by the NASA Astrophysics Data System.\n\nThis work supported by the National Aeronautics\nand Space Administration, Grant NGR 05-002-160. One of us (Stone) was\nan Alfred P. Sloan research fellow, and another (Cummings) was a NASA\nTrainee during this work.\n\nPublished - 1973-11.pdf
", "abstract": "Numerical solutions to the transport equation of galactic\ncosmic rays in the interplanetary medium have been used to\ninvestigate the applicability of commonly used approximate\nanalytic solutions for electrons (10 MeV to 10 GeV). We\nfind that for a given cosmic-ray diffusion coefficient:\n(a) the \"force-field\" approximation is in reasonable agreement\nwith the numerical solution at energies \u2273 200 MeV, but\ndeviates significantly at lower energies, depending on the\nshape of the interstellar electron spectrum, (b) the\n\"diffusion-convection\" approximation agrees generally with\nthe numerical solution within a factor of ~ 2 over the\nentire energy range.", "date": "1973", "date_type": "published", "publisher": "Colorado Associated University Press", "id_number": "CaltechAUTHORS:20140409-091427238", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140409-091427238", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "Alfred P. Sloan Research Fellowship" }, { "agency": "NASA Traineeship" } ] }, "other_numbering_system": { "items": [ { "id": "1973-11", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1973-11.pdf", "url": "https://authors.library.caltech.edu/records/fj6r2-n8b43/files/1973-11.pdf" }, "pub_year": "1973", "author_list": "Cummings, A. C.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/0mhbx-m2y43", "eprint_id": 44807, "eprint_status": "archive", "datestamp": "2023-08-19 08:12:25", "lastmod": "2023-10-26 16:58:03", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Brown-J-W", "name": { "family": "Brown", "given": "J. W." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Vogt-R-E", "name": { "family": "Vogt", "given": "R. E." } } ] }, "title": "The Elemental Abundance Ratios of Interstellar Secondary and Primary Cosmic Rays", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1973 University of Colorado.\n\nProvided by the NASA Astrophysics Data System.\n\nDr. S. S. Murray made significant contributions\nto the OGO-6 program. Dr. J. Audouze kindly provided us with a copy of\nthe computer program for the propagation calculation and provided us\nwith cross section data. Dr. M. Shea kindly supplied us with detailed\ngeomagnetic cutoff data, and Dr. T. L. Garrard supplied the solar\nmodulation program. We appreciate discussions with Dr. C. Cesarsky.\nOne of us (Brown) received support from the National Science Foundation,\nwhile another (Stone) was an Alfred P. Sloan research fellow. This work\nwas supported in part by NASA contract NAS5-9312 and grant NGR 05-002-160.\n\n\nSpace Radiation Laboratory\nSRL ID #: 1973-07.\n\nPublished - 1973-07.pdf
", "abstract": "The rigidity dependence of the ratios. of abundances of interstellar\nsecondary and primary cosmic rays contains important\ninformation on their confinement and propagation in the Galaxy.\nRecent results suggest that high energy cosmic rays (> 20 GeV/nucleon)\nhave propagated through much less interstellar matter than\nlower energy nuclei (< 1 GeV/nucleon). We report new observations\nof abundances in the charge range 2 \u2264 Z \u2264 10, which were obtained\nwith a dE/dx-Cerenkov detector launched into a polar orbit on OGO-6\nas part of the Caltech Solar and Galactic Cosmic Ray Experiment.\nIntegral rigidity spectra of all the elements observed have shapes\nsimilar to that of the helium spectrum in the rigidity range ~ 2\nto ~ 14 GV, approaching a power law with exponent -1.6 above 8 GV.\nCalculations of interstellar propagation assuming a steady-state\nmodel and including the presence of interstellar helium and the\neffects of solar modulation predict a variation with rigidity of\nratios such as Be/O and B/O, which is not observed. The data can\nbe explained by assuming a rigidity-dependent confinement of\ncosmic rays within the Galaxy.", "date": "1973", "date_type": "published", "publisher": "Colorado Associated University Press", "id_number": "CaltechAUTHORS:20140409-090240805", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140409-090240805", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-9312" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1973-07", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1973-07.pdf", "url": "https://authors.library.caltech.edu/records/0mhbx-m2y43/files/1973-07.pdf" }, "pub_year": "1973", "author_list": "Brown, J. W.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/er566-t8240", "eprint_id": 44808, "eprint_status": "archive", "datestamp": "2023-08-19 08:12:30", "lastmod": "2023-10-26 16:58:05", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Vogt-R-E", "name": { "family": "Vogt", "given": "R. E." } } ] }, "title": "Interstellar Electron Spectrum from the Galactic Non-Thermal Radio Emission", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1973 University of Colorado.\nProvided by the NASA Astrophysics Data System.\n\nThis work supported by the National Aeronautics and Space\nAdministration, Grant NGR 05-002-160. One of us (Stone) was an Alfred P.\nSloan research fellow, and another (Cummings) was a NASA Trainee during\nthis work.\n\nPublished - 1973-08.pdf
", "abstract": "A range of interstellar electron spectra at energies between\n100 MeV and 5 GeV has been derived from an analysis of the\nobserved galactic non-thermal radio spectrum and from consideration\nof the existing uncertainties in the other relevant\nphysical parameters of the galaxy. We find that for energies\nlarger than ~ 300 MeV the electron spectrum is uncertain to a\nfactor of 4 due to uncertainties in the galactic magnetic field\nstrength and the total line-of-sight emission length. The uncertainty\nin the electron spectrum increases towards lower\nenergies, exceeding a factor of 50 near 100 MeV, primarily due\nto uncertainties in the galactic parameters affecting interstellar\nradio absorption.", "date": "1973", "date_type": "published", "publisher": "Colorado Associated University Press", "id_number": "CaltechAUTHORS:20140409-090427593", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140409-090427593", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "Alfred P. Sloan Foundation" }, { "agency": "NASA Traineeship" } ] }, "other_numbering_system": { "items": [ { "id": "1973-08", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Chasson-R-L", "name": { "family": "Chasson", "given": "R. L." } } ] }, "primary_object": { "basename": "1973-08.pdf", "url": "https://authors.library.caltech.edu/records/er566-t8240/files/1973-08.pdf" }, "pub_year": "1973", "author_list": "Cummings, A. C.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/ets7e-77937", "eprint_id": 44813, "eprint_status": "archive", "datestamp": "2023-08-19 08:12:53", "lastmod": "2023-10-26 16:58:16", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Garrard-T-L", "name": { "family": "Garrard", "given": "T. L." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Vogt-R-E", "name": { "family": "Vogt", "given": "R. E." } } ] }, "title": "Relation of the Radial Gradient of Cosmic-Ray Protons to the Size of the Solar-Modulation Region", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1973 University of Colorado.\n\nProvided by the NASA Astrophysics Data System.\n\nThis work supported by the National Aeronautics and Space\nAdministration Grant NGR 05-002-160. One of us (Stone) was an Alfred P. Sloan research fellow, and another (Garrard) a NASA and NSF Trainee during this\nwork.\n\nPublished - 1973-13.pdf
", "abstract": "The radial intensity-gradient of cosmic-ray protons has been\ncalculated for a range of values of the distance to the boundary\nof a spherically symmetric solar-modulation region. We find\nthat the radial dependence of the gradients may be described\nin terms of two characteristic domains of the modulation region:\n(a) an \"inner region\" where the gradients are relatively small\nand constant, and (b), an \"outer region\"' where the gradients\nare large and show a strong radial dependence. The magnitude\nof the gradient in the inner region is small for reasonable\nvalues for the physical parameters of the modulation mechanism.", "date": "1973", "date_type": "published", "publisher": "Colorado Associated University Press", "id_number": "CaltechAUTHORS:20140409-092309559", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140409-092309559", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "Alfred P. Sloan Research Fellowship" }, { "agency": "NASA Traineeship" }, { "agency": "NSF Traineeship" } ] }, "other_numbering_system": { "items": [ { "id": "1973-13", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1973-13.pdf", "url": "https://authors.library.caltech.edu/records/ets7e-77937/files/1973-13.pdf" }, "pub_year": "1973", "author_list": "Garrard, T. L.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/rbd88-pfd71", "eprint_id": 44815, "eprint_status": "archive", "datestamp": "2023-08-19 08:13:02", "lastmod": "2023-10-26 16:58:21", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Cosmic Ray Isotopes", "ispublished": "unpub", "full_text_status": "public", "keywords": "Rapporteur paper", "note": "Rapporteur paper, presented at the 13th International Cosmic Ray\nConference, Denver, August 26, 1973.\n\nI appreciate comments by R. A. Mewaldt on this\nmanuscript.\n\nAccepted Version - 1973-15.pdf
", "abstract": "Since this is the first rapporteur talk on cosmic ray isotopes\nin thirteen Cosmic Ray Conferences, I will begin by\nbriefly summarizing our interest in isotopic composition\nas follows:\na) Isotopes, not elements, are the result of various\nnucleosynthesis processes. Thus, we must know the\nisotopic composition of cosmic rays in order to\nadequately exploit the relationship of cosmic rays\nand stellar processes.\nb) Isotopes, not elements, are the result of secondary\nfragmentation processes, either in cosmic ray\nsource regions or in the interstellar medium.\nThus, we must know the isotopic composition in\norder to completely unravel source composition\nfrom secondary composition.\nc) Isotopes, not elements, are radioactive. Thus,\nwe must know the isotopic composition in order to\ntake full advantage of various radioactive nuclei\nas cosmic ray clocks which can be used to determine\nthe age of cosmic rays.\nWith this short summary, I now turn to a brief review of\nthe results presented at this conference. Since I can't\npossibly discuss each new measurement, I have chosen the\nfollowing topics: I) Hand He isotopes, II) Be isotopes,\nIII) Al isotopes, IV) Fe isotopes, V) cross sections and\nmodel calculations, and VI) instrumental considerations.", "date": "1973", "date_type": "published", "publisher": "Proceedings of the 13th International Cosmic Ray Conference", "id_number": "CaltechAUTHORS:20140409-092956429", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140409-092956429", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "other_numbering_system": { "items": [ { "id": "N74-22428", "name": "NASA" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1973-15.pdf", "url": "https://authors.library.caltech.edu/records/rbd88-pfd71/files/1973-15.pdf" }, "pub_year": "1973", "author_list": "Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/7xvps-mgm43", "eprint_id": 44805, "eprint_status": "archive", "datestamp": "2023-08-19 08:12:21", "lastmod": "2023-10-26 16:57:58", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Brown-J-W", "name": { "family": "Brown", "given": "J. W." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Vogt-R-E", "name": { "family": "Vogt", "given": "R. E." } } ] }, "title": "Measurement of the Cosmic-Ray Be/B Ratio and the Age of Cosmic Rays", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1973 University of Colorado.\n\nProvided by the NASA Astrophysics Data System.\n\nDr. S. S. Murray made significant contributions to\nthe OGO-6 program. Dr. J. Audouze kindly provided us with a copy of the\ncomputer program for the propagation calculation and provided us with cross\nsection data. Dr. M. Shea kindly supplied us with detailed geomagnetic cutoff\ndata, and Dr. T. L. Garrard supplied the solar modulation program. We appreciate\ndiscussions with Dr. C. Cesarsky. One of us (Brown) received support\nfrom the National Science Foundation, while another (Stone) was an Alfred P.\nSloan research fellow. This work was supported in part by NASA contract\nNAS5-9312 and grant NGR 05-002-160.\n\nPublished - 1973-06.pdf
", "abstract": "The ratio Be/B depends on whether the confinement time of cosmic\nrays in the Galaxy is long or short compared to the radioactive\nhalf-life of ^(10)Be. We report observations of this ratio which\nwere obtained with a dE/dx-Cerenkov detector launched into a\npolar orbit on OGO-6 as part of the Caltech Solar and Galactic\nCosmic Ray Experiment. Be/B ratios were determined for various\nrigidity thresholds up to 15 GV. We find no statistically significant\nrigidity dependence of the ratio, which is 0.41 \u00b1 0.02\nwhen averaged over all observed cutoffs. When averaged over\ncutoffs \u22651.8 GV, the ratio is 0.43 \u00b1 0.03, which can be compared\ndirectly to the ratio of 0.42 \u00b1 0.06 calculated by O'Dell,\nShapiro, Silberberg, and Tsao assuming ^(10)Be survival. Additional\ncalculations suggest that if the present fragmentation parameters\nare correct, then the lifetime of cosmic rays in the Galaxy is\n< 10^7 y.", "date": "1973", "date_type": "published", "publisher": "Colorado Associated University Press", "id_number": "CaltechAUTHORS:20140409-085315609", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140409-085315609", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF" }, { "agency": "Alfred P. Sloan Foundation" }, { "agency": "NASA", "grant_number": "NAS5-9312" }, { "agency": "NASA", "grant_number": "NGR 05-002-160" } ] }, "other_numbering_system": { "items": [ { "id": "1973-06", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1973-06.pdf", "url": "https://authors.library.caltech.edu/records/7xvps-mgm43/files/1973-06.pdf" }, "pub_year": "1973", "author_list": "Brown, J. W.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/p5e6m-jc033", "eprint_id": 44809, "eprint_status": "archive", "datestamp": "2023-08-19 08:12:35", "lastmod": "2023-10-26 16:58:07", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Vogt-R-E", "name": { "family": "Vogt", "given": "R. E." } } ] }, "title": "Evidence for Primary Interstellar Cosmic-Ray Electrons", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1973 University of Colorado.\n\nProvided by the NASA Astrophysics Data System.\n\nThis work supported by the National Aeronautics and Space\nAdministration, Grant NGR 05-002-160. One of us (Stone) was an Alfred P.\nSloan research fellow, and another (Cummings) was a NASA Trainee during\nthis work.\n\nPublished - 1973-09.pdf
", "abstract": "We have performed a comparative study of the absolute solar\nmodulation of cosmic-ray positrons (e^+) and electrons (e^+ + e^-).\nWe find that the interstellar electron spectrum, which is\ndescribed by a power-law slope at higher energies, must flatten\nbelow ~ 100 MeV, that a significant fraction of interstellar\ncosmic-ray electrons must originate in \"primary\" sources, and\nthat the rigidity dependence of the interplanetary cosmic-ray\ndiffusion coefficient, R^\u03b1, changes from \u03b1>O at higher rigidities\nto \u03b1 \u2248 -1 below ~ 60 MV.", "date": "1973", "date_type": "published", "publisher": "Colorado Associated University Press", "id_number": "CaltechAUTHORS:20140409-090558716", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140409-090558716", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "Alfred P. Sloan Research Fellowship" }, { "agency": "NASA Traineeship" } ] }, "other_numbering_system": { "items": [ { "id": "1973-09", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1973-09.pdf", "url": "https://authors.library.caltech.edu/records/p5e6m-jc033/files/1973-09.pdf" }, "pub_year": "1973", "author_list": "Cummings, A. C.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/k77f2-skk92", "eprint_id": 44810, "eprint_status": "archive", "datestamp": "2023-08-19 08:12:39", "lastmod": "2023-10-26 16:58:10", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cummings-A-C", "name": { "family": "Cummings", "given": "A. C." }, "orcid": "0000-0002-3840-7696" }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Vogt-R-E", "name": { "family": "Vogt", "given": "R. E." } } ] }, "title": "Interplanetary Diffusion Coefficients for Cosmic Rays", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1973 University of Colorado.\n\nProvided by the NASA Astrophysics Data System.\n\nThis work supported by the National Aeronautics and\nSpace Administration, Grant NGR 05-002-160. One of us (Stone) was an Alfred\nP. Sloan research fellow, and another (Cummings) was a NASA Trainee during\nthis work.\n\nPublished - 1973-10.pdf
", "abstract": "Information on the cosmic-ray diffusion coefficient, \u03ba, derived\nfrom near-Earth observations of the solar modulation of galactic\nelectron fluxes and from the near-Earth power spectra of the\ninterplanetary magnetic field, has been used to study the\nheliocentric radial dependence of \u03ba and to derive limits on\nthe spatial extent of the solar modulation region.\n\nRepresenting \u03ba as a separable function of radius r and rigidity,\nand assuming \u03ba(r) \u221d r^n, we can place a limit on the power law\nexponent, n \u227e 1.2. The distance of the modulation boundary is\na function of n, and, e.g., for n = 0, falls into the range of\n6-25 AU.", "date": "1973", "date_type": "published", "publisher": "Colorado Associated University Press", "id_number": "CaltechAUTHORS:20140409-090931878", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140409-090931878", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NGR 05-002-160" }, { "agency": "Alfred P. Sloan Foundation" }, { "agency": "NASA Traineeship" } ] }, "other_numbering_system": { "items": [ { "id": "1973-10", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "primary_object": { "basename": "1973-10.pdf", "url": "https://authors.library.caltech.edu/records/k77f2-skk92/files/1973-10.pdf" }, "pub_year": "1973", "author_list": "Cummings, A. C.; Stone, E. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/8e9z7-9ee80", "eprint_id": 44729, "eprint_status": "archive", "datestamp": "2023-08-19 07:19:19", "lastmod": "2023-10-26 14:54:38", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Lupton-J-E", "name": { "family": "Lupton", "given": "J. E." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" } ] }, "title": "Transport of Solar Flare Protons-Comparison of a New Analytic Model with Spacecraft Measurements", "ispublished": "unpub", "full_text_status": "public", "note": "We are grateful to R. E. Vogt who has been intimately involved with the OG0-6 experiment. We also appreciate useful discussions with\nJ. R. Jokipii and S. S. Murray. This work was supported in part by the National\nAeronautics and Space Administration under Contract No. NAS5-9312 and Grant Nos.\nNGR-05-002-160 and NGL 05-002-007. One of us (J.E.L.) has received valuable\nsupport from an NDEA Fellowship and a NASA Traineeship.\n\nAccepted Version - 1971-03.pdf
", "abstract": "An analytic solution has now been obtained to the complete Fokker-Planck equation including the effects of convection, interplanetary deceleration and acceleration, corotation, and anisotropic diffusion with \u03ba\u2223\u2223 constant and with \u03ba\u22a5\u221dr^2. With the boundary of the diffusing region at 2.3 AU, a solar wind velocity of 400 km sec^(-1), \u03ba\u2223\u2223 ~7x10^(20) cm^2 sec^(-1), and impulsive injection on the line of force connecting to the earth, the solution yields a time to maximum for the particle flux of ~10 h and an exponential decay time of ~25 h. Several solar flare particle events have been observed with the Caltech Solar and Galactic Cosmic Ray Experiment on 0G0-6. Detailed comparisons of the calculated time dependence of the fluxes with these observations of 1-70 MeV protons show that the model adequately describes both the rise and decay times, indicating that \u03ba\u2223\u2223 = constant is a better representation of conditions inside 1 AU than is \u03ba\u2223\u2223 \u221dr.", "date": "1971", "date_type": "published", "publisher": "University of Tasmania Press", "id_number": "CaltechAUTHORS:20140408-085114083", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140408-085114083", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-9312" }, { "agency": "NASA", "grant_number": "NGR-05-002-160" }, { "agency": "NASA", "grant_number": "NGL 05-002-007" }, { "agency": "NDEA Fellowship" }, { "agency": "NASA Traineeship" } ] }, "other_numbering_system": { "items": [ { "id": "1971-03", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Fenton-A-G", "name": { "family": "Fenton", "given": "A. G." } }, { "id": "Fenton-K-B", "name": { "family": "Fenton", "given": "K. B." } } ] }, "primary_object": { "basename": "1971-03.pdf", "url": "https://authors.library.caltech.edu/records/8e9z7-9ee80/files/1971-03.pdf" }, "pub_year": "1971", "author_list": "Lupton, J. E. and Stone, E. C." }, { "id": "https://authors.library.caltech.edu/records/e5772-fky13", "eprint_id": 44680, "eprint_status": "archive", "datestamp": "2023-08-23 16:44:58", "lastmod": "2024-01-13 15:26:03", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Beuermann-K-P", "name": { "family": "Beuermann", "given": "K. P." } }, { "id": "Rice-C-J", "name": { "family": "Rice", "given": "C. J." } }, { "id": "Stone-E-C", "name": { "family": "Stone", "given": "E. C." }, "orcid": "0000-0002-2010-5462" }, { "id": "Vogt-R-E", "name": { "family": "Vogt", "given": "R. E." } } ] }, "title": "Cosmic-Ray Negatron and Positron Spectra Observed Near Fort Churchill in 1968", "ispublished": "unpub", "full_text_status": "public", "note": "Work supported by the National Aeronautics and Space Administration under Grant\nNumber NGL 05-002-007.\n\nSpace Radiation Laboratory;\nSRL ID # 1969-07.\n\nProvided by the NASA Astrophysics Data System.\n\nPublished - 1969-07.pdf
", "abstract": "The differential energy spectra of cosmic-ray positrons and negatrons between\n12 and 210 MeV have been measured with a balloon-borne magnetic spectrometer\nlaunched from Fort Churchill, Canada, in summer 1968. Since the geomagnetic cutoff\nvaries with time, separate spectra for the local day and night intervals are presented.\nIn addition, the corrections for atmospheric secondary electrons are discussed in detail.\nThe solar modulation of the positron flux is compared with the modulation of cosmic-ray\nnuclei.", "date": "1969", "date_type": "published", "publisher": "Proceedings of the 11th International Conference on Cosmic Rays", "id_number": "CaltechAUTHORS:20140407-091516396", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140407-091516396", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NGL 05-002-007" } ] }, "other_numbering_system": { "items": [ { "id": "1969-07", "name": "Space Radiation Laboratory" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" } ] }, "contributors": { "items": [ { "id": "Somogyi-A-J", "name": { "family": "Somogyi", "given": "Antal J." } } ] }, "primary_object": { "basename": "1969-07.pdf", "url": "https://authors.library.caltech.edu/records/e5772-fky13/files/1969-07.pdf" }, "pub_year": "1969", "author_list": "Beuermann, K. P.; Rice, C. J.; et el." } ]