EXCITATION AND IONIZATION OF FREON MOLECULES .2. ABSOLUTE OSCILLATOR-STRENGTHS FOR THE PHOTOABSORPTION (7.5-200 EV) AND THE IONIC PHOTOFRAGMENTATION (12.5-80 EV) OF CF3CL

Absolute photoabsorption oscillator strengths (cross sections) for the valence shell of CF3Cl (freon 13) have been determined using dipole (e, e) spectroscopy in the 7.5-200 eV equivalent photon energy range. The ionic photofragmentation branching ratios, photofragment appearance potentials and the photoionization efficiency have been obtained from time of flight mass spectra recorded using dipole (e,e + ion) coincidence spectroscopy at equivalent photon energies from the first ionization threshold up to 80 eV. Absolute partial photoionization oscillator strengths for the molecular and dissociative photoions have been obtained from the photoabsorption and time of flight photoionization data. Information on the dipole induced breakdown of CF3Cl was obtained by combining the results of the present photoionization study with previously published photoelectron data.