PHOTODISSOCIATION DYNAMICS OF H2S AT 266 NM VIA THE DEGENERATE 4-WAVE-MIXING SPECTROSCOPY

Photodissociation dynamics of H2S has been studied using the degenerat e four-wave mixing (DFWM) technique at 266 nm and room temperature. Th e DFWM spectra of SH A(2) Sigma-X(2) Pi(i) (0,0) transitions have been observed and the nascent rotational distributions, spin-orbit state r atio, and Lambda-doublet population ratio of the SH fragments have bee n extracted. The rotational distributions are cold and characterized b y a Boltzmann temperature of 348 +/- 20 K for the SH((2) Pi(3/2)) stat e. The Lambda-doublet population ratio has been found to be close to u nity. The SH((2) Pi(3/2))/SH((2) Pi(1/2)) ratio has been observed to b e 3.50 +/- 0.18. (C) 1997 Elsevier Science B.V.