两种电子温度等离子体系统中的电子束流不稳定性  

Electron-beam Instability in a two Electron Temperature Plasma System

作　　者：路兴强[1] 谢安平[1] 袁曼[1] 李克华[1] 

机构地区：[1]南华大学核科学技术学院,湖南衡阳421001

出　　处：《南华大学学报（自然科学版）》2010年第4期1-4,共4页Journal of University of South China：Science and Technology

基　　金：国家自然科学基金项目资助(10775066);湖南省教育厅基金项目资助(10C1152)

摘　　要：在一个包含两种不同温度电子的等离子系统中,用一维全粒子模拟模型研究电子束流不稳定性.在模拟模型中,考虑了离子与电子的实际质量比与将离子看成是静止不动的背景离子相比,在一维全粒子模拟中噪声要低,并且由于离子的原因电子束流不稳定性变弱.由于电子速度分布出现的平台和一维全粒子模拟模型中电子洞的形成使得孤波产生,在模拟中该孤波沿着电子束流的反方向传播.Electron-beam instability in a plasma system composed of two electron components with different temperature is studied using a one-dimensional（1D） full particle simulation model.In this simulation model,the real mass ratio of ion to electron is adopted.Comparing with the simulation which ions are considered as a neutralizing background in,the noise in the 1D full particle simulation is low and electron-beam instability becomes weak due to the response of ions.Solitary waves are also generated with the phenomenon that a plateau on the velocity distribution of the electrons and electron holes form in the model.The solitary wares propagate in the direction opposite to the beam in this simulation.

关 键 词：电子束 静电波 粒子模拟 

分 类 号：O532.1[理学—等离子体物理]