Kinetics of C 2(C 1Π g) photofragmentation in collisions with helium, xenon, and oxygen

Abstract

Several vibrational levels of C 2(C 1£ g are observed following the ArF laser two-photon dissociation of vinyl chloride. The kinetics of photofragmentation on collision with helium, xenon and oxygen are studied. Helium produces negligible quenching. Xenon and oxygen cause very effective relaxation of the C 1Π g state; removal rate constant of (2.56 ± 0.25) × 10 −10 cm 3 molecule −1 s −1 and (1.32 ± 0.14) × 10 −10 cm 3 molecule −1 s −1 are measured for xenon and oxygen respectively.