✦ LIBER ✦

Photodissociation dynamics of H2S isolated in krypton matrices

✍ Scribed by J. Zoval; D. Imre; P. Ashjian; V.A. Apkarian

Publisher: Elsevier Science
Year: 1992
Tongue: English
Weight: 669 KB
Volume: 197
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(92)85814-q

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✦ Synopsis

Photodissociation of HrS in krypton matrices is followed by monitoring laser-induced fluorescence from the SH photofragment. No evidence of an energy threshold for dissociation is observed. Quantum yields of dissociation, referenced to gas-phase absorption cross sections, increase nearly linearly from 0.04+ 0.01 to 0.25 f. 0.08, in the spectral range between 266 and 193 nm (excess energies of 0.75-2.5 eV) . In addition to the SH + H direct dissociation channel, production of S atoms is observed. The latter channel is ascribed to secondary, in-cage collisions between the SH and H fragments to produce S+H*.

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