Electron dynamics in collisionless magnetic reconnection

doi:10.1007/s11434-011-4440-0

	Electron dynamics in collisionless magnetic reconnection
	Lu QuanMing 1; Wang RongSheng 2; Xie JinLin 3; Huang Can 1; Lu San 1; Wang Shui 1
刊名	CHINESE SCIENCE BULLETIN
	2011-04-01
卷号	56 期号:12 页码:1174-1181
关键词	magnetic reconnection reconnection electric field secondary island electron acceleration
ISSN号	1001-6538
DOI	10.1007/s11434-011-4440-0
文献子类	Review
英文摘要	Magnetic reconnection provides a physical mechanism for fast energy conversion from magnetic energy to plasma kinetic energy. It is closely associated with many explosive phenomena in space plasma, usually collisionless in character. For this reason, researchers have become more interested in collisionless magnetic reconnection. In this paper, the various roles of electron dynamics in collisionless magnetic reconnection are reviewed. First, at the ion inertial length scale, ions and electrons are decoupled. The resulting Hall effect determines the reconnection electric field. Moreover, electron motions determine the current system inside the reconnection plane and the electron density cavity along the separatrices. The current system in this plane produces an out-of-plane magnetic field. Second, at the electron inertial length scale, the anisotropy of electron pressure determines the magnitude of the reconnection electric field in this region. The production of energetic electrons, which is an important characteristic during magnetic reconnection, is accelerated by the reconnection electric field. In addition, the different topologies, temporal evolution and spatial distribution of the magnetic field affect the accelerating process of electrons and determine the final energy of the accelerated electrons. Third, we discuss results from simulations and spacecraft observations on the secondary magnetic islands produced due to secondary instabilities around the X point, and the associated energetic electrons. Furthermore, progress in laboratory plasma studies is also discussed in regard to electron dynamics during magnetic reconnection. Finally, some unresolved problems are presented.
WOS关键词	ENERGETIC ELECTRONS ; CURRENT SHEET ; SIMULATIONS ; CHALLENGE ; ACCELERATION ; MAGNETOTAIL ; DISSIPATION ; BOUNDARY ; REGION ; FLARES
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000289799600002
资助机构	National Natural Science Foundation of China(40725013 ; National Natural Science Foundation of China(40725013 ; Chinese Academy of Sciences(KJCX2-YW-N28) ; Chinese Academy of Sciences(KJCX2-YW-N28) ; State Oceanic Administration of China(201005017) ; State Oceanic Administration of China(201005017) ; 40974081 ; 40974081 ; 40931053) ; 40931053) ; National Natural Science Foundation of China(40725013 ; National Natural Science Foundation of China(40725013 ; Chinese Academy of Sciences(KJCX2-YW-N28) ; Chinese Academy of Sciences(KJCX2-YW-N28) ; State Oceanic Administration of China(201005017) ; State Oceanic Administration of China(201005017) ; 40974081 ; 40974081 ; 40931053) ; 40931053) ; National Natural Science Foundation of China(40725013 ; National Natural Science Foundation of China(40725013 ; Chinese Academy of Sciences(KJCX2-YW-N28) ; Chinese Academy of Sciences(KJCX2-YW-N28) ; State Oceanic Administration of China(201005017) ; State Oceanic Administration of China(201005017) ; 40974081 ; 40974081 ; 40931053) ; 40931053) ; National Natural Science Foundation of China(40725013 ; National Natural Science Foundation of China(40725013 ; Chinese Academy of Sciences(KJCX2-YW-N28) ; Chinese Academy of Sciences(KJCX2-YW-N28) ; State Oceanic Administration of China(201005017) ; State Oceanic Administration of China(201005017) ; 40974081 ; 40974081 ; 40931053) ; 40931053)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/74142]
专题	中国科学院地质与地球物理研究所
通讯作者	Lu QuanMing
作者单位	1.Univ Sci & Technol China, CAS Key Lab Basic Plasma Phys, Sch Earth & Space Sci, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Geol Geophys, Beijing 100029, Peoples R China 3.Univ Sci & Technol China, CAS Key Lab Basic Plasma Phys, Sch Phys Sci, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Lu QuanMing,Wang RongSheng,Xie JinLin,et al. Electron dynamics in collisionless magnetic reconnection[J]. CHINESE SCIENCE BULLETIN,2011,56(12):1174-1181.
APA	Lu QuanMing,Wang RongSheng,Xie JinLin,Huang Can,Lu San,&Wang Shui.(2011).Electron dynamics in collisionless magnetic reconnection.CHINESE SCIENCE BULLETIN,56(12),1174-1181.
MLA	Lu QuanMing,et al."Electron dynamics in collisionless magnetic reconnection".CHINESE SCIENCE BULLETIN 56.12(2011):1174-1181.