Plasmoid Ejection and Secondary Current Sheet Generation from Magnetic Reconnection in Laser-Plasma Interaction

被引：108

作者：

Dong, Quan-Li ^{[1
]}

Wang, Shou-Jun ^{[1
]}

Lu, Quan-Ming ^{[2
]}

Huang, Can ^{[2
]}

Yuan, Da-Wei ^{[1
]}

Liu, Xun ^{[1
]}

Lin, Xiao-Xuan ^{[1
]}

Li, Yu-Tong ^{[1
]}

Wei, Hui-Gang ^{[3
]}

Zhong, Jia-Yong ^{[3
]}

Shi, Jian-Rong ^{[3
]}

Jiang, Shao-En ^{[4
]}

Ding, Yong-Kun ^{[4
]}

Jiang, Bo-Bin ^{[4
]}

Du, Kai ^{[4
]}

He, Xian-Tu ^{[5
,6
]}

Yu, M. Y. ^{[6
,7
]}

Liu, C. S. ^{[8
]}

Wang, Shui ^{[2
]}

Tang, Yong-Jian ^{[4
]}

Zhu, Jian-Qiang ^{[9
]}

Zhao, Gang ^{[3
]}

Sheng, Zheng-Ming ^{[1
,10
,11
]}

Zhang, Jie ^{[1
,10
,11
]}

机构：

[1] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100080, Peoples R China

[2] Univ Sci & Technol China, CAS Key Lab Basic Plasma Phys, Hefei 230026, Anhui, Peoples R China

[3] Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China

[4] China Acad Engn Phys, Res Ctr Laser Fus, Mianyang 621900, Peoples R China

[5] Inst Appl Phys & Computat Math, Beijing 100094, Peoples R China

[6] Zhejiang Univ, Dept Phys, Inst Fus Theory & Simulat, Hangzhou 310027, Zhejiang, Peoples R China

[7] Ruhr Univ Bochum, Inst Theoret Phys 1, D-44780 Bochum, Germany

[8] Univ Maryland, Dept Phys, College Pk, MD 20742 USA

[9] Natl Lab High Power Lasers & Phys, Shanghai 201800, Peoples R China

[10] Shanghai Jiao Tong Univ, Key Lab Laser Plasmas MoE, Shanghai 200240, Peoples R China

[11] Shanghai Jiao Tong Univ, Dept Phys, Shanghai 200240, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 21期

基金：

中国国家自然科学基金;

关键词：

X-RAY SOURCE; LOOP-TOP; ELECTRON ACCELERATION; FIELDS; FLARES;

D O I：

10.1103/PhysRevLett.108.215001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Reconnection of the self-generated magnetic fields in laser-plasma interaction was first investigated experimentally by Nilson et al. [Phys. Rev. Lett. 97, 255001 (2006)] by shining two laser pulses a distance apart on a solid target layer. An elongated current sheet (CS) was observed in the plasma between the two laser spots. In order to more closely model magnetotail reconnection, here two side-by-side thin target layers, instead of a single one, are used. It is found that at one end of the elongated CS a fanlike electron outflow region including three well-collimated electron jets appears. The (> 1 MeV) tail of the jet energy distribution exhibits a power-law scaling. The enhanced electron acceleration is attributed to the intense inductive electric field in the narrow electron dominated reconnection region, as well as additional acceleration as they are trapped inside the rapidly moving plasmoid formed in and ejected from the CS. The ejection also induces a secondary CS.

引用

页数：6

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