Abstract

A frequency-doubled cw dye laser has been used to determine the initial vibrational distribution of CS formed in the reaction O + CS 2 → CS + SO by application of laser-induced fluorescence. The A 1¶—X 1σ + system of CS was excited, and rotationally resolved spectra of a number of bands measured. The vibrational distribution found for υ = 0–2 is 1.0:0.27:0.11, yielding a value of 6% for the fraction of reaction exoergicity entering vibration of this product. No evidence of high product rotational excitation wss detected for a reaction pressure 5 × 10 −3 Torr.

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