Boundary conditions for the kinetic equations and the equations of motion of the magnetization of conduction electrons in a metal with surface paramagnetic impurities

Boundary conditions for the distribution function and magnetization of conductivity electrons of a metal scattered by surface paramagnetic impurities are obtained. The equations of motion for nonequilibrium surface impurity magnetization entering the boundary conditions for the magnetization of conductivity electrons are found. The system of the boundary conditions and equations of motion is obtained by means of analysing the collision integrals of quantum kinetic equation for the one-electron distribution function and spin density matrix of impurities in the second order of perturbation theory. The boundary conditions for describing the surface magnetic relaxation under conditions of the conductivity electron spin resonance are formulated.