Collisions in the mathematical model of the electromagnetic field in the electron's flux

The kinetic equation for electrons in the neutral medium and self-consistent electromagnetic field is considered. The integral of collisions in the approximation of small energy transfers is constructed. The approximate decision of the kinetic equation, which allows using particles method for numerical simulation of the electric current density, is suggested. The smallness of the pulse transfer in collisions and cross-section increasing during electron movement in medium are used.