Abstract
The paper is concerned with investigation of the influence of an intense HF electric field and warm plasma waveguide on the electrostatic oscillations of a nonuniform bounded plasma. The stabilizing effect of a strong HF (pump) electrical field on a Buneman instability in a plane plasma waveguide is investigated. We use the separation method to solve the two-fluid plasma equations which describe the system. The method used enables us to determine the frequencies and growth rates of unstable modes and the self-consistent electrical field. Plasma elections are considered to have a thermal velocity. It is shown that the growth rate of the instability in a warm plasma is reduced compared to cold plasma. Also, it is found that the warmth of the plasma electrons has no effect on the solution of the space part of the problem.
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