ISSN 0301-0104

Chemical Physics
Volume 137, Pages 197-205
15 October 1989

The influence of singlet - triplet transitions on non-stationary kinetics of radical recombination in homogeneous solutions. 1. General theory and analytical model treatment

N. V. Shokhirev1, E. B. Krissinel'2, K. M. Salikhov3

1Institute of Chemical Kinetics and Combustion, Siberian Branch of the USSR Academy of Sciences, Novosibirsk 630090, USSR
2Novosibirsk State University, Novosibirsk 630090, USSR
3E. K. Zavoyski Physical Technical Institute, Kazan Department of the USSR Academy of Sciences, Novosibirsk 420029, USSR

Received for publication June 10, 1989; Accepted July 5, 1989

 

Abstract

 

An expression is derived for the non-stationary rate constant of bimolecular reactions in the quasiresonant approximation for particles with internal structure. The influence of S-T0 singlet-triplet transitions on the kinetics of neutral radical recombination in a magnetic field is examined. Asymptotic expressions for the rate constant of non-stationary recombination are obtained for both short and long times. It was found that an oscillatory regime exists in homogeneous reactions.