中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
  4. 中国科学院地球与行星物理重点实验室
Interactions between H+ band EMIC waves and radiation belt relativistic electrons: Comparisons of test particle simulations with quasi-linear calculations

文献类型：期刊论文

作者Fu, Song1,2; Ni, Binbin1; Tao, Xin2,3; Ge, Yasong4; Liu, Jiang5,6,7; Lou, Yuequn1; Gu, Xudong1; Cao, Xing1; Xiang, Zheng1; Zhang, Wenxun1
刊名PHYSICS OF PLASMAS
出版日期2019-03-01
卷号26期号:3页码:8
ISSN号1070-664X
DOI10.1063/1.5054809
英文摘要We develop a general 3-D relativistic test particle (TP) simulation code to examine the trajectories and pitch angle variations of test electrons. We investigate the conditions when the electrons transit broadband, parallel propagating H+ band electromagnetic ion cyclotron (EMIC) waves to find whether the classical quasilinear theory (QLT) can be applied to interactions between H+ band EMIC waves and radiation belt relativistic (and ultra-relativistic) electrons. We find that to reach good consistency between TP scattering coefficients and QLT calculations, the wave-particle resonant interaction time (which indicates the time of particles traveling in the wave fields and being resonant with the wave fields) must be carefully calculated to ensure the validity of the linear diffusion process. This wave-particle resonant interaction time depends largely on the wave amplitude, the bandwidth, and the initial parameters of electrons for TP simulations; once the time of electrons traveling in the wave fields becomes large enough when the pitch angles of electrons scattered by wave fields reach the maximal value limited by the resonance condition and cannot be diffused any longer, the linear diffusion process of particles defined by QLT will not be valid any longer. When the resonant electrons start to travel through the wave field, they undergo the linear diffusion process resulting from the pitch angle scattering by the H+ band EMIC wave field. As the time of traveling in the wave fields increases, the test electrons will suffer effective pitch angle scattering and the pitch angles of these electrons will reach the maximum value limited by the resonance condition, which is determined by the wave and electron parameters. These electrons are then reflected by the wave fields and the linear wave-particle interactions defined by QLT will not be valid anymore. This kind of wave-particle interaction subsequently introduces considerable deviation of TP diffusion coefficients from those predicted by QLT calculations. Our results demonstrate that the general validity of QLT in describing how broadband EMIC waves affect radiation belt relativistic electrons is highly related to the time of electron traveling in the wave fields, which tends to increase for smaller wave power and broader wave frequency spectra. Published under license by AIP Publishing.
WOS关键词ION-CYCLOTRON WAVES ; ENERGY DIFFUSION-COEFFICIENTS ; PITCH-ANGLE SCATTERING ; RESONANT SCATTERING ; DENSITY ; PLASMA ; PRECIPITATION ; MAGNETOSPHERE
资助项目NSFC[41704162] ; NSFC[41674163] ; NSFC[41474141] ; NSFC[41204120] ; NSFC[41574160] ; NSFC[41474142] ; NSFC[41674174] ; Hubei Province Natural Science Excellent Youth Foundation[2016CFA044] ; Key Laboratory of Geospace Environment ; Chinese Academy of Sciences ; University of Science & Technology of China
WOS研究方向Physics
语种英语
出版者AMER INST PHYSICS
WOS记录号WOS:000462916300041
资助机构NSFC ; NSFC ; Hubei Province Natural Science Excellent Youth Foundation ; Hubei Province Natural Science Excellent Youth Foundation ; Key Laboratory of Geospace Environment ; Key Laboratory of Geospace Environment ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; University of Science & Technology of China ; University of Science & Technology of China ; NSFC ; NSFC ; Hubei Province Natural Science Excellent Youth Foundation ; Hubei Province Natural Science Excellent Youth Foundation ; Key Laboratory of Geospace Environment ; Key Laboratory of Geospace Environment ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; University of Science & Technology of China ; University of Science & Technology of China ; NSFC ; NSFC ; Hubei Province Natural Science Excellent Youth Foundation ; Hubei Province Natural Science Excellent Youth Foundation ; Key Laboratory of Geospace Environment ; Key Laboratory of Geospace Environment ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; University of Science & Technology of China ; University of Science & Technology of China ; NSFC ; NSFC ; Hubei Province Natural Science Excellent Youth Foundation ; Hubei Province Natural Science Excellent Youth Foundation ; Key Laboratory of Geospace Environment ; Key Laboratory of Geospace Environment ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; University of Science & Technology of China ; University of Science & Technology of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/91301]  
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Ni, Binbin
作者单位1.Wuhan Univ, Sch Elect Informat, Dept Space Phys, Wuhan 430072, Hubei, Peoples R China
2.Univ Sci Technol China, Dept Geophys & Planetary Sci, CAS Key Lab Geospace Environm, Hefei 230026, Anhui, Peoples R China
3.Collaborat Innovat Ctr Astronaut Sci & Technol, Hefei 230026, Anhui, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
5.Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Los Angeles, CA 90095 USA
6.Univ Calif Los Angeles, Inst Geophys & Planetary Phys, Los Angeles, CA 90095 USA
7.Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA 90095 USA
推荐引用方式
GB/T 7714		 Fu, Song,Ni, Binbin,Tao, Xin,et al. Interactions between H+ band EMIC waves and radiation belt relativistic electrons: Comparisons of test particle simulations with quasi-linear calculations[J]. PHYSICS OF PLASMAS,2019,26(3):8.
APA Fu, Song.,Ni, Binbin.,Tao, Xin.,Ge, Yasong.,Liu, Jiang.,...&Zhang, Yang.(2019).Interactions between H+ band EMIC waves and radiation belt relativistic electrons: Comparisons of test particle simulations with quasi-linear calculations.PHYSICS OF PLASMAS,26(3),8.
MLA Fu, Song,et al."Interactions between H+ band EMIC waves and radiation belt relativistic electrons: Comparisons of test particle simulations with quasi-linear calculations".PHYSICS OF PLASMAS 26.3(2019):8.

入库方式： OAI收割

来源：地质与地球物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。