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Latitudinal dependence of nonlinear interaction between electromagnetic ion cyclotron wave and radiation belt relativistic electrons
Su, Zhenpeng; Zhu, Hui; Xiao, Fuliang; Zheng, Huinan; Shen, Chao; Wang, Yuming; Wang, Shui; Su, ZP (reprint author), Univ Sci & Technol China, Dept Geophys & Planetary Sci, Hefei 230026, Anhui, Peoples R China.
Department空间科学部
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
2013
Volume118Issue:6Pages:3188-3202
ISSN2169-9380
Language英语
KeywordRadiation Belt Electrons Precipitation Loss Wave-particle Interaction Emic Wave Phase Trapping Phase Bunching
AbstractElectromagnetic ion cyclotron (EMIC) waves are long suggested to account for the rapid loss of radiation belt relativistic electrons. Here we perform both theoretical analysis and numerical simulation to comprehensively investigate the nonlinear interaction between EMIC wave and relativistic electrons. In particular, we emphasize the dependence of nonlinear processes on the electron initial latitude. The nonlinear phase trapping yields negative equatorial pitch angle transport, with efficiency varying over the electron initial latitude, implying that it can increase the loss rate predicted by quasilinear theory. The nonlinear channel effect phase bunching produces positive equatorial pitch angle transport, less dependent on the electron initial latitude, suggesting that it can decrease the loss rate predicted by quasilinear theory. The nonlinear cluster effect phase bunching alternately causes positive and negative equatorial pitch angle transport, quasi-periodically dependent on the electron initial latitude, suggesting that it can either decrease or increase the loss rate predicted by the quasilinear theory. Such latitudinal dependence of nonlinear processes should be taken into account in the evaluation of radiation belt electron loss rate driven by EMIC waves.
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/4977
Collection空间科学部
Corresponding AuthorSu, ZP (reprint author), Univ Sci & Technol China, Dept Geophys & Planetary Sci, Hefei 230026, Anhui, Peoples R China.
Recommended Citation
GB/T 7714
Su, Zhenpeng,Zhu, Hui,Xiao, Fuliang,et al. Latitudinal dependence of nonlinear interaction between electromagnetic ion cyclotron wave and radiation belt relativistic electrons[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2013,118(6):3188-3202.
APA Su, Zhenpeng.,Zhu, Hui.,Xiao, Fuliang.,Zheng, Huinan.,Shen, Chao.,...&Su, ZP .(2013).Latitudinal dependence of nonlinear interaction between electromagnetic ion cyclotron wave and radiation belt relativistic electrons.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,118(6),3188-3202.
MLA Su, Zhenpeng,et al."Latitudinal dependence of nonlinear interaction between electromagnetic ion cyclotron wave and radiation belt relativistic electrons".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 118.6(2013):3188-3202.
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