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Predissociation is observed to occur throughout the V′=0 level of the A 2Σ+ states of SH and SD, based upon laser-induced fluorescence measurements obtained in conjunction with knowledge of the absolute concentrations of both radicals via chemical titration in a fast flow reactor in the pressure range 1–5 Torr. By comparison of results with those obtained in the same system for OH, a radical for which both the kinetics and spectroscopy are well defined, predissociative and radiative lifetimes are calculated to be 3 and 820 ns for SH; 260 and 730 ns for SD.
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Friedl et al. (1983) studied this question.
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