Particle Simulation of Electrostatic Waves Driven by an Electron Beam  

作　　者：郭俊 

机构地区：[1]School of Mathematics and Physics, Qingdao University of Science and Technology, Qingdao 266042 [2]State Key Laboratory of Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100080

出　　处：《Chinese Physics Letters》2010年第2期172-175,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 40974097, the Knowledge Innovation Project of Chinese Academy of Sciences under Grant No KZCX2-YW-N28, and the Open Research Program Foundation of State Key Laboratory for Space Weather, Chinese Academy Sciences.

摘　　要：A one-dimensional electrostatic particle-in-cell simulation is performed to study electrostatic wave excitation due to an electron beam in a plasma system. The excited fundamental and harmonic waves are analyzed with the fast Fourier transformation and the wavelet transformation. The second harmonic is suggested to be generated by wave-wave coupling during the nonlinear evolution, which involves forward propagating and backward propagating Langmuir waves. Furthermore, the background electrons may be heated and accelerated by the electrostatic waves.A one-dimensional electrostatic particle-in-cell simulation is performed to study electrostatic wave excitation due to an electron beam in a plasma system. The excited fundamental and harmonic waves are analyzed with the fast Fourier transformation and the wavelet transformation. The second harmonic is suggested to be generated by wave-wave coupling during the nonlinear evolution, which involves forward propagating and backward propagating Langmuir waves. Furthermore, the background electrons may be heated and accelerated by the electrostatic waves.

关 键 词：Chinese climate network complex systems small world COMMUNITY 

分 类 号：O53[理学—等离子体物理] TN141.32[理学—物理]