  The analysis of nonlinear interaction of transversal electromagnetic field
with collisionless plasma is carried out. Formulas for calculation electric
current in collisionless plasma with arbitrary degree of degeneration of
electronic gas are deduced. It has appeared, that the nonlinearity account
leads to occurrence of the longitudinal electric current directed along a wave
vector. This second current is orthogonal to the known transversal current,
received at the classical linear analysis.
