Magnetic field effects on radical pair recombination in liquids. Nonadiabatic transitions at low magnetic fields

Low-field (L band) chemically induced dynamic electron polarization (CIDEP) in radical pair recombination in liquids is theoretically investigated. Simple analytical expressions for the low-field ST0 and ST± contributions are derived. It is shown that the characteristic features of the low-field ST± mechanism of CIDEP qualitatively differ from those predicted by the conventional ST− mechanism.