Interaction between electromagnetic waves and plasma waves in motional plasma

被引：12
|
作者：
Chen, S. Y. [1 ]
Gao, M. [1 ]
Tang, C. J. [1 ]
Peng, X. D. [2 ]
机构：
[1] Sichuan Univ, Coll Phys Sci & Technol, Chengdu 610065, Peoples R China
[2] SW Inst Phys Ctr Fus Sci, Chengdu 610041, Peoples R China
来源：
PHYSICS OF PLASMAS | 2009年 / 16卷 / 06期
基金：
中国国家自然科学基金;
关键词：
plasma collision processes; plasma electromagnetic wave propagation; plasma instability; plasma magnetohydrodynamics; plasma waves; ELECTRON-BEAMS; ION-CHANNEL; GENERATION; CYCLOTRON; TOKAMAKS; LASER;
D O I：
10.1063/1.3159606
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：
The electromagnetic wave (EM wave) behavior and the electromagnetic instability caused by the interaction between an EM wave and a plasma wave in motional plasma are studied. The dispersion relation of EM waves and the dielectric tensor of motional plasma are derived by magnetohydrodynamics, and the wave phenomenon in motional plasma is displayed. As a result, the electromagnetic instability, which is excited by the interaction between the EM waves and the plasma waves, is revealed. The mechanism of the instability is the coupling between high frequency electromagnetic field and the transverse electron oscillation derived from the deflection of longitudinal electron oscillation due to self-magnetic field. The present research is useful with regard to the new type of plasma radiation source, ion-focusing accelerator, and plasma diagnostic technique.
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页数：4
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