Shackleford, William L. (1964) I. Measurement of gf-values for singly ionized chromium using the reflected wave region of a shock tube. II. Experimental investigation of the approach to equilibrium ionization and electronic excitation in shock-heated mixtures of chromium and argon. III. Approximate spectral absorption coefficient calculations for electronic band systems belonging to diatomic molecules (Dissertation (Ph.D)), California Institute of Technology doi: 10.7907/RAAH-J388