MEASUREMENT OF CL(P-2(1/2)) QUANTUM YIELD FOR THE PHOTODISSOCIATION OF NOCL, ICL, PCL3, CL2O AND COCL2

Laser photolysis of chlorine-containing molecules at lambda = 248 and 351 nm has been performed using time-resolved laser magnetic resonance to detect Cl(P-2(1/2)) and Cl(P-2(3/2)) chlorine atoms. Relative yields of spin-orbit excited chlorine atoms, beta = [Cl(P-2(1.2))]/{[Cl(P-2(3/2))]+[Cl(P-2(1/2))]}, have been measured for the photodissociation of NOCl (lambda = 351 nm), NOCl (248 nm), ICl (248 nm), PCl3 (248 nm), Cl2O (248 nm), COCl2 (248 nm) yielding the following values respectively: 90 +/- 10, 88 +/- 12, 67 +/- 5, 44 +/- 3, 18 +/- 3, <5%.