Absolute oscillator strengths for the photoabsorption, ionic photofragmentation and photoionization of H 2S (10–40 eV)

Abstract

The absolute total photoabsorption oscillator strength for H 2S has been measured using dipole (e,e) spectroscopy in the equivalent photon energy range up to 90 eV. Photoionization mass spectra have been measured over the energy range up to 40 eV using dipole (e,e+ion) spectroscopy. Absolute oscillator strengths for molecular photoionization and all dissociative photoionization channels have been obtained from the total photoabsorption and the photoionization branching ratios. Earlier measurements of photoelectron branching ratios at 21.22, 30, 36 and 41 eV have been used together with the photoionization oscillator strengths to generate absolute partial oscillator strengths for production of the four valence shell electronic states of H 2S +. A consideration of all the data sets provides insight into the dipole-induced breakdown of H 2S using radiation up to 40 eV energy.