Fast magnetic reconnection with large guide fields

Stanier, A.; Simakov, Andrei N.; Chacón, L.; Daughton, W.

doi:10.1063/1.4905629

Title: Fast magnetic reconnection with large guide fields

Journal Article · Fri Jan 09 00:00:00 EST 2015 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4905629· OSTI ID:1291213

Stanier, A. ^[1]; Simakov, Andrei N. ^[1]; Chacón, L. ^[1]; Daughton, W. ^[1]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

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.

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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Fusion Energy Sciences (FES)

Grant/Contract Number:: AC52-06NA25396

OSTI ID:: 1291213

Alternate ID(s):: OSTI ID: 1228480

Report Number(s):: LA-UR-15-20009; PHPAEN

Journal Information:: Physics of Plasmas, Vol. 22, Issue 1; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 12 works

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Why does steady-state magnetic reconnection have a maximum local rate of order 0.1? Liu, Yi-Hsin; Hesse, M.; Guo, F. arXiv https://doi.org/10.48550/arxiv.1611.07859	text	January 2016
A scalable, fully implicit algorithm for the reduced two-field low-β extended MHD model Chacón, L.; Stanier, A. Journal of Computational Physics, Vol. 326 https://doi.org/10.1016/j.jcp.2016.09.007	journal	December 2016

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