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 of 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 datail as function of plasma and beam parameters. It is shown that these are consistent with the previous experimental results.

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