THE GREEN-FUNCTION METHOD IN THE THEORY OF NUCLEAR AND ELECTRON-SPIN POLARIZATION .1. GENERAL-THEORY, ZERO APPROXIMATION AND APPLICATIONS

A method of calculating electron and nuclear spin polarization based o n the Green function formalism which specifies the character of the re lative motion of radical centers is suggested. In a zero approximation with respect to the exchange interaction influence the calculations o f the desired quantities are reduced to matrix operations. To illustra te the possibilities of the method, two particular examples are given. In the first example the CIDNP kinetics is calculated with allowance for electron spin relaxation, in the second one the relationship is es tablished between the form of the spectrum line of the stimulated pola rization of nuclei and the character of the relative motion of radical s in solution.