带转动的相对论电子束在非中性等离子体柱状波导中传输的稳定性分析  

Stability Analysis of Relativistic Electron Beam with Angular Rotation Propagating through Nonneutral Plasma Background

作　　者：郝颖[1] 俞俊生 王爱科[1] 彭晓东[1] 龙永兴[1] 谭宝林[1] 

机构地区：[1]核工业西南物理研究院

出　　处：《科学技术与工程》2002年第1期34-36,共3页Science Technology and Engineering

基　　金：国家自然科学基金(19875015)资助

摘　　要：首先利用相对论电子束的自电场与自磁场所产生的径向力平衡方程,计算出相对论电子束在稳态非中性等离子体填充的柱状波导中传输的转动频率。然后运用 MHD 方程,求得电子束静电扰动的本征方程和色散关系。发现电子束与非中性等离子体相互作用的不稳定性增长特性及静电扰动在高频长波被显著放大。The radial force balance equation for the self-electric field and self- magnetic field of the relativistic electron beam is used to calculate the angular rotation frequency of the relativistic electron beam propagating through the cylindrical wave guide filled with nonneutral plasmas.Then within the framework of MHD theory,the eigenvalue equation and the dispersion relation are derived for the electrostatic ~ perturbation of the electron beam. Under the interaction between the electrons and nonneutral plasmas,the instability growth rate is obtained and the high frequency long wavelength modes are significantly amplified.

关 键 词：相对论电子束 非中性等离子体 不稳定性 

分 类 号：O53[理学—等离子体物理]