Deactivation of electronically excited sulfur atoms, S(3 1S)

Deactivation of S(3 1S0) produced in the gas phase photolysis of carbonyl sulfide at 147.0 nm was studied with various molecules. The time dependence of the concentration of excited sulfur atoms is followed by their emission at 772.5 nm (1S0 → 1D2) and 458.9 nm (1S0 → 3P1). Absolute rate coefficients for removal (reaction plus collisional relaxation) of S(3 1S0) were measured for O2, CO, CO2, OCS, H2, NO, NO2, N2O, H2S, CS2, SO2, CH4, C2H6, C2H4, C2H2, and Ar. For many of these gases, removal rate coefficients for S(3 1S0) and O(2 1S0) are similar, but exceptions are noted as well.