Effect of plasma nonlinearity on the beam-plasma interaction in a hybrid plasma waveguide

被引:2
|
作者
Antonov, AN [1 ]
Bliokh, YP [1 ]
Kovpik, OF [1 ]
Kornilov, EA [1 ]
Lyubarskii, MG [1 ]
Matyash, KV [1 ]
Podobinskii, VO [1 ]
Svichenskii, VG [1 ]
Fainberg, YB [1 ]
机构
[1] Natl Sci Ctr Kharkov, Kharkov Phys & Technol Inst, UA-61108 Kharkov, Ukraine
关键词
Microwave; Electron Beam; Velocity Distribution; Plasma Density; Density Variation;
D O I
10.1134/1.1354224
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
A study is made of the characteristic features of the effect of plasma nonlinearity in a slow-wave structure on microwave generation by an electron beam and on electron beam energy losses. Theoretical results on the plasma density variation, the amplitude of the excited microwaves, and the velocity distribution function of the beam electrons are compared with the experimental data. It is shown that the self-consistency between the decreasing plasma density gradient and the spatial variation of the amplitude of an amplified wave in a slow-wave structure leads to a significant (severalfold) increase in the efficiency with which the electron beam energy is converted into microwave energy in short pulses. The predictions of the theoretical model developed to describe the non-steady-state beam-plasma interaction agree well with the experimental data. (C) 2001 MAIK " Nauka/Interperiodica ".
引用
收藏
页码:251 / 258
页数:8
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