Ionic photofragmentation of SO 2 in the sulfur 2p and 2s regions

Abstract

Ionic photofragmentation of SO 2 in the sulfur 2p and 2s regions has been investigated using monochromatic synchrotron radiation. Multi-stop time-of-flight mass spectrometry was used to collect photoelectron–photoion coincidence (PEPICO), photoion–photoion coincidence (PIPICO) and photoelectron–photoion–photoion coincidence (PEPIPICO) spectra simultaneously. Partial ion yields and partial ion-pair yields have been determined. Dissociation mechanisms of the productions of ion-pairs O + S + and O + SO + have been discussed briefly.