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The role of electrons during chorus intensification: Energy source and energy loss
Fu, H. S.; Cao, J. B.; Zong, Q-G.; Lu, H. Y.; Huang, S. Y.; Wei, X. H.; Ma, Y. D.; Fu, HS (reprint author), Swedish Inst Space Phys, Uppsala, Sweden.
Department空间科学部
Source PublicationJOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS
2012
Volume80Pages:37-47
ISSN1364-6826
Language英语
KeywordChorus Intensification Betatron Acceleration Pitch-angle Diffusion Interplanetary Shock
AbstractThe role of electrons during the shock-induced chorus intensification observed by THEMIS D on 19 November 2007 is investigated in detail. First, the electrons are accelerated through the local betatron acceleration and radial diffusion, which are primarily in the perpendicular direction and result in the positive anisotropy (T-perpendicular to > T-//) of electrons; then they are scattered through the pitch-angle diffusion, during which the electron energies are partially transferred to amplify the chorus. In the case of interest, the energy loss is more efficient for the lower-energy (15 key) electrons because they have larger density gradient along the diffusion curves. The energetic electrons act as the intermediate in this scenario. They transfer the energies carried by the interplanetary shock to the chorus. The energetic electrons injected from magnetotail are not observed; they have no contributions to the energy source in this event. (C) 2012 Elsevier Ltd. All rights reserved.; The role of electrons during the shock-induced chorus intensification observed by THEMIS D on 19 November 2007 is investigated in detail. First, the electrons are accelerated through the local betatron acceleration and radial diffusion, which are primarily in the perpendicular direction and result in the positive anisotropy (T-perpendicular to > T-//) of electrons; then they are scattered through the pitch-angle diffusion, during which the electron energies are partially transferred to amplify the chorus. In the case of interest, the energy loss is more efficient for the lower-energy (15 key) electrons because they have larger density gradient along the diffusion curves. The energetic electrons act as the intermediate in this scenario. They transfer the energies carried by the interplanetary shock to the chorus. The energetic electrons injected from magnetotail are not observed; they have no contributions to the energy source in this event. (C) 2012 Elsevier Ltd. All rights reserved.
Indexed BySCI
Funding Project中国科学院空间科学与应用研究中心
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/3288
Collection空间科学部
Corresponding AuthorFu, HS (reprint author), Swedish Inst Space Phys, Uppsala, Sweden.
Recommended Citation
GB/T 7714
Fu, H. S.,Cao, J. B.,Zong, Q-G.,et al. The role of electrons during chorus intensification: Energy source and energy loss[J]. JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS,2012,80:37-47.
APA Fu, H. S..,Cao, J. B..,Zong, Q-G..,Lu, H. Y..,Huang, S. Y..,...&Fu, HS .(2012).The role of electrons during chorus intensification: Energy source and energy loss.JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS,80,37-47.
MLA Fu, H. S.,et al."The role of electrons during chorus intensification: Energy source and energy loss".JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS 80(2012):37-47.
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