Radiation by Charged Particles passing through an Electron Plasma in an External Magnetic Field

Abstract

The motion of a charged particle through a low density electron plasma in an external magnetic field has been investigated. The interaction of the particle through transverse waves has only been considered, and the consequent energy losses are calculated. It is found that the coupling between the longitudinal plasma wave and the transverse electromagnetic wave modifies the nature of radiation emitted by the particle. The results show that for a velocity greater than that needed for exciting plasma waves in the medium, the particle emits non-Cerenkov type of radiation, in addition to Cerenkov radiation obtained previously by others.