  Kinetic Vlasov-Boltzmann equation for degenerate collisional plasmas with
integral of collisions of relaxation type BGK (Bhatnagar, Gross and Krook) is
used. Square-law expansion on size of intensity of electric field for kinetic
equation, Lorentz's force and integral of collisions is considered. It is
shown, that nonlinearity leads to generation of the longitudinal electric
current directed along a wave vector. Longitudinal current is perpendicular to
the known transversal classical current received at the linear analysis. The
case of small values of wave number is considered. When frequency of collisions
tends to the zero, all received results for collisional pass plasmas in
corresponding results for collisionless plasmas. Graphic research of the real
and imaginary part current density is carried out.
