ULTRAFAST PHOTODISSOCIATION OF OCS AS STUDIED BY TUNABLE VUV-VUV PUMP-PROBE
SPECTROSCOPY

Ryuji Itakura, Akiyoshi Hishikawa, and Kaoru Yamanouchi

Department of Chemisty, School of Science, University of Tokyo, Tokyo, Japan

Jet-cooled OCS molecules were excited to the 21S+ state by tunable VUV
laser light (154-150 nm).  Using another tunable VUV laser light, the LIF
spectra of the CO photofragments were measured and the vibrational and
rotational distributions were derived to discuss the ultrafast
photodissociation dynamics: OCS (21S+) -> CO(X1S+) + S(1S).