globalchange  > 科学计划与规划
DOI: 10.1002/2016GL069842
论文题名:
Two-scale ion meandering caused by the polarization electric field during asymmetric reconnection
作者: Wang S.; Chen L.-J.; Hesse M.; Bessho N.; Gershman D.J.; Dorelli J.; Giles B.; Torbert R.B.; Pollock C.J.; Strangeway R.; Ergun R.E.; Burch J.L.; Avanov L.; Lavraud B.; Moore T.E.; Saito Y.
刊名: Geophysical Research Letters
ISSN: 0094-8790
EISSN: 1944-8521
出版年: 2016
卷: 43, 期:15
起始页码: 7831
结束页码: 7839
语种: 英语
英文关键词: ion meandering motion ; magnetic reconnection ; polarization electric field
Scopus关键词: Distribution functions ; Electric fields ; Ions ; Polarization ; Current sheets ; Ion diffusion ; Ion velocity distribution function ; Magnetic force ; Magnetic reconnections ; Out-of plane ; Out-of-plane direction ; Scale structures ; Trapped ions ; current meandering ; current velocity ; diffusion ; electric field ; observational method ; particle motion ; polarization
英文摘要: Ion velocity distribution functions (VDFs) from a particle-in-cell simulation of asymmetric reconnection are investigated to reveal a two-scale structure of the ion diffusion region (IDR). Ions bouncing in the inner IDR are trapped mainly by the electric field normal to the current sheet (N direction), while those reaching the outer IDR are turned back mainly by the magnetic force. The resulting inner layer VDFs have counter-streaming populations along N with decreasing counter-streaming speeds away from the midplane while maintaining the out-of-plane speed, and the outer layer VDFs exhibit crescent shapes toward the out-of-plane direction. Observations of the above VDF features and the normal electric fields provide evidence for the two-scale meandering motion. ©2016. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84981333040&doi=10.1002%2f2016GL069842&partnerID=40&md5=b63e4afcac6e3a4cf46e0689707e7812
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9753
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Astronomy Department, University of Maryland, College Park, MD, United States

Recommended Citation:
Wang S.,Chen L.-J.,Hesse M.,et al. Two-scale ion meandering caused by the polarization electric field during asymmetric reconnection[J]. Geophysical Research Letters,2016-01-01,43(15).
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