Study of the effects of guide field on Hall reconnection

被引：13

作者：

Tharp, T. D. ^{[1
]}

Yamada, M. ^{[1
]}

Ji, H. ^{[1
]}

Lawrence, E. ^{[1
]}

Dorfman, S. ^{[1
]}

Myers, C. ^{[1
]}

Yoo, J. ^{[1
]}

Huang, Y. -M. ^{[2
,3
]}

Bhattacharjee, A. ^{[2
,3
]}

机构：

[1] Princeton Plasma Phys Lab, Ctr Magnet Self Org, Princeton, NJ 08543 USA

[2] Univ New Hampshire, Ctr Space Sci, Princeton, NJ 08543 USA

[3] Princeton Univ, Max Planck Princeton Res Ctr Plasma Phys, Princeton, NJ 08543 USA

来源：

PHYSICS OF PLASMAS | 2013年 / 20卷 / 05期

基金：

美国国家科学基金会;

关键词：

COLLISIONLESS MAGNETIC RECONNECTION; PLASMA; COLLAPSE;

D O I：

10.1063/1.4805244

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The results from guide field studies on the Magnetic Reconnection Experiment (MRX) are compared with results from Hall magnetohydrodynamic (HMHD) reconnection simulation with guide field. The quadrupole field, a signature of two-fluid reconnection at zero guide field, is modified by the presence of a finite guide field in a manner consistent with HMHD simulation. The modified Hall current profile contains reduced electron flows in the reconnection plane, which quantitatively explains the observed reduction of the reconnection rate. The present results are consistent with the hypothesis that the local reconnection dynamics is dominated by Hall effects in the collisionless regime of the MRX plasmas. While very good agreement is seen between experiment and simulations, we note that an important global feature of the experiments, a compression of the guide field by the reconnecting plasma, is not represented in the simulations. (C) 2013 AIP Publishing LLC.

引用

页数：6

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