Photofragmentation of C, F and S K-shell excited CF3SF5 studied by PEPICO and PIPICO spectroscopy

Abstract: Photodecomposition of K-shell excited CF3SF5 was investigated by means of photoelectron–photoion coincidence (PEPICO) and photoion–photoion coincidence (PIPICO) spectroscopy. In PEPICO mode to study site-selective fragmentation, the yield of was high at the excitation and that of was considerable at the excitation into . When the F K-shell of SF5 was selectively excited, the formation of was prominent. The atomic ions of S+ and F+ were overwhelmingly produced with some amounts of S2+ and S3+ ions at the S K-shell excitation. Formation of highly charged ions was confirmed by PIPICO spectroscopy. The yields of were low at the excitation. Breakdown pathways of the ions were discussed. [Copyright &y& Elsevier]