Unsteady beam-plasma discharge: I. Mathematical model and linear theory

被引：0
作者：
Yu. P. Bliokh
M. G. Lyubarsky
V. O. Podobinsky
Ya. B. Fainberg
机构：
[1] Technion,National Science Center Kharkov Institute of Physics and Technology
[2] Karazin National University,undefined
[3] Institute of Plasma Electronics and New Acceleration Methods,undefined
来源：
Plasma Physics Reports | 2003年 / 29卷
关键词：
Microwave; Mathematical Model; Numerical Modeling; Acoustic Wave; Linear Theory;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A mathematical model is constructed that describes the development of the beam-plasma instability in a traveling-wave tube amplifier in the presence of a neutral gas. Steady solutions are derived for conditions of microwave discharges in a magnetized plasma-filled traveling-wave tube amplifier, and their stability is investigated. It is shown that the steady-state amplification regime may become unstable and change to the self-modulation regime. The relationships between the amplifier parameters at the instability threshold are obtained, and the frequencies of the excited ion acoustic waves are determined. The results of numerical modeling are found to agree well with the analytical results.
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页码：740 / 747
页数：7
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