Collisional Deactivation of O(1S)

Abstract

Absolute rate coefficients for the collisional deactivation of $\mathrm{O}{(}^1\mathrm{S)}$ have been measured for CO₂, CO, SF₆, O₂, H₂O, NH₃, CH₄, C₂H₄, C₂H₆N₂O, NO, NO₂, H₂, N₂, He, Ne, Ar, Kr, and Xe. The measurements have been made with a lifetime technique in which $\mathrm{O}{(}^1\mathrm{S)}$ is produced in the photodissociation of CO₂ by a pulsed vacuum‐ultraviolet light source The rate coefficients were obtained from time‐resolved measurements of the intensity of the $\mathrm{O}{(}^1{\mathrm{S\hspace{0.17em}\to \hspace{0.17em}}}^1\mathrm{D)}$ line at 5577 Å. Deactivation of $\mathrm{O}{(}^1\mathrm{S)}$ by collision induced radiation has been observed for H₂, N₂, Ar, Kr, and Xe.