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Numerical modeling of electron acoustic waves excited by an electron beam

文献类型：期刊论文

作者Yu Bin1,2; Gao XinLiang1; Fan Kai1; Du Aimin3
刊名CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
出版日期2018-09-01
卷号61期号:9页码:3536-3544
关键词Electron beam Electrostatic acoustic waves Particle-in-cell simulation
ISSN号0001-5733
DOI10.6038/cjg2018M0041
英文摘要In this paper, we employ an electrostatic particle-in-cell simulation model to study the electron beam instability, in which the temperature of beam electrons is much larger than that of background electrons. Results show that the dominant wave mode excited by the electron beam is the electron acoustic waves, of which the evolution has two stages: the linear growth stage and nonlinear saturation stage. During the nonlinear saturation stage, a part of background electrons can be accelerated to high energy via its nonlinear interactions with excited electron acoustic waves, whose phase velocities change with their frequencies. We also study the effects of the temperature of beam electrons, the density ratio of beam electrons to background electrons, and the drift velocity of beam electrons on the excited electron acoustic waves.
WOS关键词PHASE-SPACE HOLES ; MAGNETIC RECONNECTION ; GENERATION MECHANISM ; PLASMA EMISSION ; SOLITARY WAVES ; SOLAR-FLARES ; ACCELERATION ; REGION ; INSTABILITIES ; OSCILLATIONS
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000444791100003
出版者SCIENCE PRESS
源URL[http://ir.iggcas.ac.cn/handle/132A11/88708]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Gao XinLiang
作者单位1.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Geospace Environm, Hefei 230026, Anhui, Peoples R China
2.Qingdao Univ Sci & Technol, Coll Math & Phys, Qingdao 266061, Shandong, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, CAS Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Yu Bin,Gao XinLiang,Fan Kai,et al. Numerical modeling of electron acoustic waves excited by an electron beam[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2018,61(9):3536-3544.
APA Yu Bin,Gao XinLiang,Fan Kai,&Du Aimin.(2018).Numerical modeling of electron acoustic waves excited by an electron beam.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,61(9),3536-3544.
MLA Yu Bin,et al."Numerical modeling of electron acoustic waves excited by an electron beam".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 61.9(2018):3536-3544.

入库方式： OAI收割

来源：地质与地球物理研究所

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