Kinetic Approach to Self Modulation of an Amplitude Modulated Wave in Magnetoplasmas

Abstract

A rigorous theory for the self modulation of an amplitude modulated electromagnetic wave propagating along the direction of the magnetic field has been developed; the effects of self interaction and mutual interaction for both extraordinary and ordinary modes of propagation have been considered simultaneously. It is shown that the ordinary mode of propagation becomes demodulated and that the extraordinary mode shows strong over‐modulation during its propagation through the medium, when the carrier frequency equals the electron gyrofrequency.