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Title: Electron acceleration in three-dimensional magnetic reconnection with a guide field

Kinetic simulations of 3D collisionless magnetic reconnection with a guide field show a dramatic enhancement of energetic electron production when compared with 2D systems. In the 2D systems, electrons are trapped in magnetic islands that limit their energy gain, whereas in the 3D systems the filamentation of the current layer leads to a stochastic magnetic field that enables the electrons to access volume-filling acceleration regions. The dominant accelerator of the most energetic electrons is a Fermi-like mechanism associated with reflection of charged particles from contracting field lines.
Authors:
;  [1] ;  [1] ;  [2] ;  [2] ;  [2]
  1. Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742 (United States)
  2. (United States)
Publication Date:
OSTI Identifier:
22486403
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 22; Journal Issue: 10; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ACCELERATION; CHARGED PARTICLES; MAGNETIC FIELDS; MAGNETIC ISLANDS; MAGNETIC RECONNECTION; REFLECTION; SIMULATION; STOCHASTIC PROCESSES; TAIL ELECTRONS; THREE-DIMENSIONAL CALCULATIONS; TRAPPING