Numerical modeling of electron acoustic waves excited by an electron beam

doi:10.6038/cjg2018M0041

CORC > 地质与地球物理研究所 > 中国科学院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

	Numerical modeling of electron acoustic waves excited by an electron beam
	Yu Bin 1,2; Gao XinLiang 1; Fan Kai 1; Du Aimin 3
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	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
DOI	10.6038/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
出版者	SCIENCE PRESS
WOS记录号	WOS:000444791100003
内容类型	期刊论文
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.