Electron source associated with dipolarization at the outer boundary of   the radiation belts: Non-storm cases

doi:10.1029/2012JA018084

CORC > 北京大学 > 地球与空间科学学院

	Electron source associated with dipolarization at the outer boundary of the radiation belts: Non-storm cases
	Lui, A. T. Y. ; Zong, Q.G. ; Wang, C. ; Dunlop, M. W.
刊名	journal of geophysical research space physics
	2012
关键词	RELATIVISTIC ELECTRONS INNER MAGNETOSPHERE SUBSTORM EXPANSION MAGNETIC STORMS DRIFT ECHOES ACCELERATION MAGNETOTAIL INJECTION ENERGIZATION PROPAGATION
DOI	10.1029/2012JA018084
英文摘要	We examine the strength of the electron source associated with dipolarization at the outer boundary of the radiation belts using multisatellite observations from THEMIS. This topic is relevant to the determination on the relative roles of inward radial diffusion versus internal local acceleration for the origin of the relativistic electrons in the outer radiation belt. We focus on the electron phase space density (PSD) as a function of the first adiabatic invariant (mu) for equatorially mirroring population over a broad energy range. It is found that the source strength associated with dipolarization for non-storm periods at the outer boundary of the radiation belts can be well above the observed fluxes of relativistic electrons inside the outer radiation belt. The PSD change due to the magnetic field strength variation dominates over PSD change from the energy flux increase with dipolarization, resulting in a strong anticorrelation between magnetic field strength and PSD values at a given mu. If observations from closely spaced satellites during the same event can be used to indicate radial transport of electrons with dipolarization, then the observed PSD at these satellites indicates frequent occurrence of non-adiabatic process during their radial transport.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000310084600002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Astronomy & Astrophysics; SCI(E); 6; ARTICLE; 117
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/229851]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Lui, A. T. Y.,Zong, Q.G.,Wang, C.,et al. Electron source associated with dipolarization at the outer boundary of the radiation belts: Non-storm cases[J]. journal of geophysical research space physics,2012.
APA	Lui, A. T. Y.,Zong, Q.G.,Wang, C.,&Dunlop, M. W..(2012).Electron source associated with dipolarization at the outer boundary of the radiation belts: Non-storm cases.journal of geophysical research space physics.
MLA	Lui, A. T. Y.,et al."Electron source associated with dipolarization at the outer boundary of the radiation belts: Non-storm cases".journal of geophysical research space physics (2012).