THE RELAXATIONAL MECHANISM OF NET CIDEP GENERATION IN TRIPLET-RADICALQUENCHING

A relaxational mechanism for the net radical CIDEP (NRCIDEP) generatio n in the process of triplet-radical (TR) quenching in liquids is propo sed. The NRCIDEP is known to be generated by virtue of nonadiabatic tr ansitions between terms of the TR pairs with different multiplicity. N onadiabatic transitions induced by the fluctuating zero-field splittin g interaction in the T molecule are treated in the short correlation t ime approximation. A number of simple analytical formulae for the NRCI DEP are derived for different values of the TR exchange interaction. T hese formulae predict nontrivial dependences of the NRCIDEP on the TR relative diffusion coefficient (i.e. on the viscosity of the liquid).