有限磁场作用下等离子体背景中的切伦可夫不稳定性研究  

Study of Cherenkov instability for a plasma immersed waveguide in a finite magnetic field

作　　者：李伟[1] 谢鸿全[1] 魏彦玉[1] 刘盛纲[1] 

机构地区：[1]电子科技大学高能电子学研究所,四川成都610054

出　　处：《强激光与粒子束》2002年第5期749-752,共4页High Power Laser and Particle Beams

基　　金：国防科技基础研究基金资助课题 (99.JS .1 0 )

摘　　要：较高密度的相对论电子束注入等离子体中将会形成离子通道 ,在考虑了离子通道的影响下 ,推导出圆柱波导中更普遍的色散方程 。When an electron beam is injected into plasma, an ion channel might form if the beam density is relatively high. A dispersion equation of a circular cylindrical waveguide with the ion channel taken into account is given in this paper. The properties of dispersion and wave growth rates have also been discussed for two cases, one is that the ion channel was taken into account, and the other is that the ion channel was neglected.

关 键 词：等离子体 切伦可夫不稳定性 有限磁场 离子通道 色散方程 波增长率 相对论电子束微波器件 

分 类 号：TN128[电子电信—物理电子学] O53[理学—等离子体物理]