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Title: Wakefield generation in magnetized plasmas

Abstract

We consider wakefield generation in plasmas by electromagnetic pulses propagating perpendicular to a strong magnetic field, in the regime where the electron cyclotron frequency is equal to or larger than the plasma frequency. Particle-in-cell simulations reveal that for moderate magnetic field strengths previous results are reproduced, and the wakefield wave number spectrum has a clear peak at the inverse skin depth. However, when the cyclotron frequency is significantly larger than the plasma frequency, the wakefield spectrum becomes broadband, and simultaneously the loss rate of the driving pulse is much enhanced. A set of equations for the scalar and vector potentials reproducing these results are derived, using only the assumption of a weakly nonlinear interaction.

Authors:
; ;  [1]
  1. Department of Physics, Umeaa University, SE-901 87 Umeaa (Sweden)
Publication Date:
OSTI Identifier:
21611755
Resource Type:
Journal Article
Journal Name:
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics (Print)
Additional Journal Information:
Journal Volume: 84; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevE.84.036409; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1539-3755
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CYCLOTRON FREQUENCY; ELECTROMAGNETIC PULSES; ELECTRONS; EQUATIONS; LANGMUIR FREQUENCY; MAGNETIC FIELDS; NONLINEAR PROBLEMS; PLASMA; SCALARS; SIMULATION; VECTORS; WAKEFIELD ACCELERATORS; ACCELERATORS; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; FERMIONS; LEPTONS; LINEAR ACCELERATORS; PULSES; RADIATIONS; TENSORS

Citation Formats

Holkundkar, Amol, Brodin, Gert, and Marklund, Mattias. Wakefield generation in magnetized plasmas. United States: N. p., 2011. Web. doi:10.1103/PHYSREVE.84.036409.
Holkundkar, Amol, Brodin, Gert, & Marklund, Mattias. Wakefield generation in magnetized plasmas. United States. doi:10.1103/PHYSREVE.84.036409.
Holkundkar, Amol, Brodin, Gert, and Marklund, Mattias. Thu . "Wakefield generation in magnetized plasmas". United States. doi:10.1103/PHYSREVE.84.036409.
@article{osti_21611755,
title = {Wakefield generation in magnetized plasmas},
author = {Holkundkar, Amol and Brodin, Gert and Marklund, Mattias},
abstractNote = {We consider wakefield generation in plasmas by electromagnetic pulses propagating perpendicular to a strong magnetic field, in the regime where the electron cyclotron frequency is equal to or larger than the plasma frequency. Particle-in-cell simulations reveal that for moderate magnetic field strengths previous results are reproduced, and the wakefield wave number spectrum has a clear peak at the inverse skin depth. However, when the cyclotron frequency is significantly larger than the plasma frequency, the wakefield spectrum becomes broadband, and simultaneously the loss rate of the driving pulse is much enhanced. A set of equations for the scalar and vector potentials reproducing these results are derived, using only the assumption of a weakly nonlinear interaction.},
doi = {10.1103/PHYSREVE.84.036409},
journal = {Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics (Print)},
issn = {1539-3755},
number = 3,
volume = 84,
place = {United States},
year = {2011},
month = {9}
}