Double-channel recombination of the radical pairs via incoherent Δg-mechanism of spin-conversion

The recombination/separation of the radical pair from its singlet and triplet state is studied. The spin conversion in a pair is considered as a stochastic (incoherent) process, assuming that the recombination of both singlet and triplet radical pairs is contact. The quantum yields of recombination products and free radical production are calculated for any initial separation of radicals in a pair.