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Title: Fast magnetic reconnection with large guide fields

Abstract

We domonstrate, using two-fluid simulations, that low-βmagnetic reconnection remains fast, regardless of the presence of fast dispersive waves, which have been previously suggested to play a critical role. In order to understand these results, a discrete model is constructed that offers scaling relationships for the reconnection rate and dissipation region (DR) thickness in terms of the upstream magnetic field and DR length. Moreover, we verify these scalings numerically and show how the DR self-adjusts to process magnetic flux at the same rate that it is supplied to a larger region where two-fluid effects become important. The rate is therefore independent of the DR physics and is in good agreement with kinetic results.

Authors:
 [1];  [1];  [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24)
OSTI Identifier:
1291213
Alternate Identifier(s):
OSTI ID: 1228480
Report Number(s):
LA-UR-15-20009
Journal ID: ISSN 1070-664X; PHPAEN
Grant/Contract Number:
AC52-06NA25396
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 22; Journal Issue: 1; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Stanier, A., Simakov, Andrei N., Chacón, L., and Daughton, W. Fast magnetic reconnection with large guide fields. United States: N. p., 2015. Web. doi:10.1063/1.4905629.
Stanier, A., Simakov, Andrei N., Chacón, L., & Daughton, W. Fast magnetic reconnection with large guide fields. United States. doi:10.1063/1.4905629.
Stanier, A., Simakov, Andrei N., Chacón, L., and Daughton, W. Fri . "Fast magnetic reconnection with large guide fields". United States. doi:10.1063/1.4905629. https://www.osti.gov/servlets/purl/1291213.
@article{osti_1291213,
title = {Fast magnetic reconnection with large guide fields},
author = {Stanier, A. and Simakov, Andrei N. and Chacón, L. and Daughton, W.},
abstractNote = {We domonstrate, using two-fluid simulations, that low-βmagnetic reconnection remains fast, regardless of the presence of fast dispersive waves, which have been previously suggested to play a critical role. In order to understand these results, a discrete model is constructed that offers scaling relationships for the reconnection rate and dissipation region (DR) thickness in terms of the upstream magnetic field and DR length. Moreover, we verify these scalings numerically and show how the DR self-adjusts to process magnetic flux at the same rate that it is supplied to a larger region where two-fluid effects become important. The rate is therefore independent of the DR physics and is in good agreement with kinetic results.},
doi = {10.1063/1.4905629},
journal = {Physics of Plasmas},
number = 1,
volume = 22,
place = {United States},
year = {Fri Jan 09 00:00:00 EST 2015},
month = {Fri Jan 09 00:00:00 EST 2015}
}

Journal Article:
Free Publicly Available Full Text
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Cited by: 9 works
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