[
    {
        "id": "authors:es0q9-rw117",
        "collection": "authors",
        "collection_id": "es0q9-rw117",
        "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:WOOjcp80",
        "type": "article",
        "title": "Ion cyclotron resonance studies of radiative and dissociative electron attachment processes at low pressures",
        "author": [
            {
                "family_name": "Woodin",
                "given_name": "R. L.",
                "clpid": "Woodin-R-L"
            },
            {
                "family_name": "Foster",
                "given_name": "M. S.",
                "clpid": "Foster-M-S"
            },
            {
                "family_name": "Beauchamp",
                "given_name": "J. L.",
                "orcid": "0000-0001-8839-4822",
                "clpid": "Beauchamp-J-L"
            }
        ],
        "abstract": "Ion cyclotron resonance spectroscopy is used to measure nondissociative electron attachment rate constants for C6F6 (perfluorobenzene), C7F8 (perfluorotoluene), c-C4F8 (perfluorocyclobutane), and C7F14 (perfluoromethylcyclohexane) at low pressure (<10\u22126 Torr). Infrared emission is assumed to stabilize excited species leading to long-lived molecular negative ions. Combining the present data with negative ion lifetimes measured at low pressures by time-of-flight methods and electron attachment rates measured at high pressures in swarm experiments allows estimates of radiative lifetimes to be made. These all fall in the range from 0.4 to 1.5 msec, which are typical of infrared radiative lifetimes. Data are also presented for dissociative electron attachment to CCl4, where the rate limiting step is shown to be thermalization of the electron energy distribution. A number of different buffer gases are examined and the ion cyclotron resonance results extrapolate to yield the attachment rate measured in high pressure swarm experiments.",
        "doi": "10.1063/1.439653",
        "issn": "0021-9606",
        "publisher": "American Institute of Physics",
        "publication": "Journal of Chemical Physics",
        "publication_date": "1980-04-01",
        "series_number": "7",
        "volume": "72",
        "issue": "7",
        "pages": "4223-4227"
    },
    {
        "id": "authors:ycd1h-5f277",
        "collection": "authors",
        "collection_id": "ycd1h-5f277",
        "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:MOSjcp75b",
        "type": "article",
        "title": "Electronic spectroscopy of trans-azomethane by electron impact",
        "author": [
            {
                "family_name": "Mosher",
                "given_name": "Oren A.",
                "clpid": "Mosher-O-A"
            },
            {
                "family_name": "Foster",
                "given_name": "Michael S.",
                "clpid": "Foster-M-S"
            },
            {
                "family_name": "Flicker",
                "given_name": "Wayne M.",
                "clpid": "Flicker-W-M"
            },
            {
                "family_name": "Beauchamp",
                "given_name": "J. L.",
                "orcid": "0000-0001-8839-4822",
                "clpid": "Beauchamp-J-L"
            },
            {
                "family_name": "Kuppermann",
                "given_name": "Aron",
                "clpid": "Kuppermann-A"
            }
        ],
        "abstract": "The electron impact excitation of trans-azomethane (i.e., trans-dimethyl diazine CH3\u2013N\u2013N\u2013CH3) has been studied by both trapped electron (TE) and differential electron scattering (DES) techniques. The nature of the excited state in each of several transitions has been identified by the energy and angular dependences of the excitation cross section. Two previously unreported singlet-->triplet transitions are observed with maxima at 2.75 and 4.84 eV. Theoretical calculations on the parent compound, trans-diimide (H\u2013N=N\u2013H), suggest that these are the \u03c7 1Ag-->1 3Bg (produced by excitation of an electron from an n + molecular orbital to a pi* molecular orbital) and the \u03c7 1Ag-->1 3Bu (pi-->pi*) transitions, respectively. The \u03c7 1Ag-->1 1Bg (n + -->pi*) transition is observed with a peak at 3.50 eV in the DES studies. A strong peak at 6.01 eV in the TE spectra appears as a weak shoulder in the DES studies and is interpreted as either a symmetry-forbidden or Rydberg-like singlet-->singlet transition. Allowed singlet-->singlet features overlap each other in the transition energy range from 6 to 10 eV. Peaks are seen in the DES spectra at 6.71, 7.8, and 9.5 eV and in the TE spectrum at 8.0 eV. Several significant differences between the TE and the DES spectra are analyzed on the basis of the different nature of the two experiments.",
        "doi": "10.1063/1.430976",
        "issn": "0021-9606",
        "publisher": "American Institute of Physics",
        "publication": "Journal of Chemical Physics",
        "publication_date": "1975-05-01",
        "series_number": "9",
        "volume": "62",
        "issue": "9",
        "pages": "3424-3430"
    }
]