The OCS S L2MM Auger spectrum and angular distributions studied by photoelectron-Auger electron coincidence experiments

The selectivity of the photoelectron-Auger electron coincidence technique has been used to isolate the S L3MM contribution to the L2.3MM Auger spectrum in OCS. In this way, a direct comparison of the energies, widths, and relative intensities of the final OCS2+ states with theoretical calculations has been achieved. Moreover, the angular distributions of some selected Auger electrons have been measured in coincidence with the photoelectron at two different photon energies. In contrast with the results of noncoincidence measurements, the coincidence angular distributions show a significant asymmetry and a dependence on the photon energy and OCS2+ final state.