Ionic photofragmentation of SO2 in the sulfur 2p and 2s regions

Renfei Feng(a), Ronald G. Cavell(a,b), Adam P. Hitchcock(c)

a Alberta Synchrotron Institute, Edmonton, Alta., Canada T6G 2E1
b Department of Chemistry, University of Alberta, Edmonton, Alta., Canada T6G 2G2
c BIMR, McMaster University, Hamilton, Ont., Canada L8S 4M1

Abstract: - Ionic photofragmentation of SO2 in the sulfur 2p and 2s regions has been investigated using monochromatic synchrotron radiation. Multistop 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.

Keywords: Photofragmentation; Coincidence; Time-of-flight; Ion yield; Ion-pair yield

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