Direct determination of the rate coefficient for the reaction of O( 1D) with OCS

Abstract

A gaseous mixture of O 3/OCS/He was irradiated at 266 nm with a pulsed laser, and vibrationally excited SO(X 3Σ −, v = 8 and 19) generated in the reaction of O( 1D) with OCS was detected with the laser-induced fluorescence (LIF) via the B 3Σ − – X 3Σ − system. The apparent production rates of SO( v = 8) in the initial reaction time and their OCS pressure dependence have been measured, giving the absolute overall rate coefficient for the O( 1D) + OCS reaction.