The electromagnetic waves in plasma with non-stationary magnetic field

Neglecting transient processes the propagation of transversal electromagnetic waves in collisionless plasma along external magnetic field changed by leap in time is considered. It is shown, that after switching on the magnetic field the plane polarized wave splits into six waves, three of which propagate forward and three backward. There are two extraordinary and one ordinary wave in each group. The energy expressions for the process of the initial wave decay are received. (Auth.)