Electrostatic Instability of Electron Bernstein Wave in a Beam-Plasma System

Abstract

The dispersion relation of Bernstein wave in an electron beam-plasma system is analyzed numerically. Electrostatic instability of the wave occurs as the result of interaction with a slow space charge wave or a slow cyclotron wave beam, while interactions with a fast space charge wave and a fast cyclotron wave of beam result in a strong damping of waves The behavior of the instability is investigated in detail as a function of plasma and beam parameters. It is shown that these are consistent with the previous experimental results.