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Title: Jet Deflection by Very Weak Guide Fields during Magnetic Reconnection

Abstract

Previous 2D simulations of reconnection using a standard model of initially antiparallel magnetic fields have detected electron jets outflowing from the x point into the ion outflow exhausts. Associated with these jets are extended ''outer electron diffusion regions.'' New PIC simulations with an ion to electron mass ratio as large as 1836 (an H{sup +} plasma) now show that the jets are strongly deflected and the outer electron diffusion region is broken up by a very weak out-of-plane magnetic guide field, even though the diffusion rate itself is unchanged. Jet outflow and deflection are interpreted in terms of electron dynamics and are compared to recent measurements of jets in the presence of a small guide field in Earth's magnetosheath.

Authors:
; ;  [1]; ;  [2]
  1. Department of Physics and CIPS, University of Colorado, Boulder, Colorado 80309 (United States)
  2. Centrum voor Plasma-Astrofysica, Katholieke Universiteit, Leuven (Belgium)
Publication Date:
OSTI Identifier:
21611789
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 107; Journal Issue: 13; Other Information: DOI: 10.1103/PhysRevLett.107.135001; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ELECTRONS; HYDROGEN IONS 1 PLUS; MAGNETIC FIELDS; MAGNETIC RECONNECTION; MAGNETOSHEATH; PLASMA; SIMULATION; STANDARD MODEL; CATIONS; CHARGED PARTICLES; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; GRAND UNIFIED THEORY; HYDROGEN IONS; IONS; LEPTONS; MATHEMATICAL MODELS; PARTICLE MODELS; QUANTUM FIELD THEORY; UNIFIED GAUGE MODELS

Citation Formats

Goldman, M. V., Newman, D. L., Che, H., Lapenta, G., and Markidis, S. Jet Deflection by Very Weak Guide Fields during Magnetic Reconnection. United States: N. p., 2011. Web. doi:10.1103/PHYSREVLETT.107.135001.
Goldman, M. V., Newman, D. L., Che, H., Lapenta, G., & Markidis, S. Jet Deflection by Very Weak Guide Fields during Magnetic Reconnection. United States. doi:10.1103/PHYSREVLETT.107.135001.
Goldman, M. V., Newman, D. L., Che, H., Lapenta, G., and Markidis, S. Fri . "Jet Deflection by Very Weak Guide Fields during Magnetic Reconnection". United States. doi:10.1103/PHYSREVLETT.107.135001.
@article{osti_21611789,
title = {Jet Deflection by Very Weak Guide Fields during Magnetic Reconnection},
author = {Goldman, M. V. and Newman, D. L. and Che, H. and Lapenta, G. and Markidis, S.},
abstractNote = {Previous 2D simulations of reconnection using a standard model of initially antiparallel magnetic fields have detected electron jets outflowing from the x point into the ion outflow exhausts. Associated with these jets are extended ''outer electron diffusion regions.'' New PIC simulations with an ion to electron mass ratio as large as 1836 (an H{sup +} plasma) now show that the jets are strongly deflected and the outer electron diffusion region is broken up by a very weak out-of-plane magnetic guide field, even though the diffusion rate itself is unchanged. Jet outflow and deflection are interpreted in terms of electron dynamics and are compared to recent measurements of jets in the presence of a small guide field in Earth's magnetosheath.},
doi = {10.1103/PHYSREVLETT.107.135001},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 13,
volume = 107,
place = {United States},
year = {2011},
month = {9}
}