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Title: Particles trajectories in magnetic filaments

The motion of a particle in a spatially harmonic magnetic field is a basic problem involved, for example, in the mechanism of formation of a collisionless shock. In such settings, it is generally reasoned that particles entering a Weibel generated turbulence are trapped inside it, provided their Larmor radius in the peak field is smaller than the field coherence length. The goal of this work is to put this heuristic conclusion on firm ground by studying, both analytically and numerically, such motion. A toy model is analyzed, consisting of a relativistic particle entering a region of space occupied by a spatially harmonic field. The particle penetrates the magnetic structure in a direction aligned with the magnetic filaments. Although the conclusions are not trivial, the main result is confirmed.
Authors:
 [1] ;  [2]
  1. ETSI Industriales, Universidad de Castilla-La Mancha, 13071 Ciudad Real (Spain)
  2. (Spain)
Publication Date:
OSTI Identifier:
22490003
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 22; Journal Issue: 7; 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; COHERENCE LENGTH; FILAMENTS; LARMOR RADIUS; MAGNETIC FIELDS; PARTICLES; RELATIVISTIC RANGE; TRAJECTORIES; TRAPPING; TURBULENCE