Direct observation of O(3<i>P</i> <i>J</i>) in the photolysis of O3 at 248 nm

Abstract

The photodissociation of O3 at 248 nm has been studied following photolysis with a KrF excimer laser. The results of the current experiments, which were carried out in absorption using improved high-speed detection electronics, are in good agreement with previous direct observations of significant O(3PJ) photofragment yield following photolysis at 266 nm. A quantitative estimate of the quantum yield for O(1D2) production at 248 nm is 0.85±0.02. The implications of this observation for earlier studies of O(1D2) reactivity are discussed.