Measurement of Cl ( 2P [formula omitted]) quantum yield for the photodissociation of NOCl, ICl, PCl 3, Cl 2O and COCl 2

Abstract

Laser photolysis of chlorine-containing molecules at λ = 248 and 351 nm has been performed using time-resolved laser magnetic resonance to detect Cl( 2P 1 2 ) and Cl( 2P 3 2 ) chlorine atoms. Relative yields of spin—orbit excited chlorine atoms, β = [Cl( 2P 1 2 )]{[Cl( 2P 3 2 )] + [Cl( 2P 1 2 )]}, have been measured for the photodissociation of NOCl (λ = 351 nm), NOCl (248 nm), ICl (248 nm), PCl 3 (248 nm), Cl 2O (248 nm), COCl 2 (248 nm) yielding the following values respectively: 90 ± 10, 88 ± 12, 67 ± 5, 44 ± 3, 18 ± 3, < 5%.