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Title: A fluid approach to linear beam plasma electromagnetic instabilities

Abstract

Electromagnetic instabilities found for an arbitrary oriented wave vector are typically difficult to investigate analytically within the framework of kinetic theory. The case of a small density relativistic electron beam interacting with a plasma is considered, and a two-fluid theory of the system including a kinetic pressure tensor is developed. The model obtained agrees very well with temperature effects found on oblique instabilities from a kinetic model, and the respective roles of parallel and transverse beam temperatures are correctly reproduced. An analysis of the phase velocities of the unstable waves allows for an explanation of this similarity. Such a formalism could be used to study oblique instabilities in settings where kinetic theory becomes problematic to implement.

Authors:
;  [1];  [2]
  1. ETSI Industriales, Universidad de Castilla-La Mancha, 13071 Ciudad Real (Spain)
  2. (CNRS-UMR 8578), Universite Paris XI, Batiment 210, 91405 Orsay cedex (France)
Publication Date:
OSTI Identifier:
20782726
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 13; Journal Issue: 4; Other Information: DOI: 10.1063/1.2196876; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BEAM-PLASMA SYSTEMS; DENSITY; ELECTRON BEAMS; ELECTRON TEMPERATURE; FLUIDS; ION TEMPERATURE; LANDAU LIQUID HELIUM THEORY; PHASE VELOCITY; PLASMA INSTABILITY; PLASMA PRESSURE; PLASMA WAVES; RELATIVISTIC PLASMA; RELATIVISTIC RANGE; TEMPERATURE DEPENDENCE; VECTORS

Citation Formats

Bret, A., Deutsch, C., and Laboratoire de Physique des Gaz et des Plasmas. A fluid approach to linear beam plasma electromagnetic instabilities. United States: N. p., 2006. Web. doi:10.1063/1.2196876.
Bret, A., Deutsch, C., & Laboratoire de Physique des Gaz et des Plasmas. A fluid approach to linear beam plasma electromagnetic instabilities. United States. doi:10.1063/1.2196876.
Bret, A., Deutsch, C., and Laboratoire de Physique des Gaz et des Plasmas. Sat . "A fluid approach to linear beam plasma electromagnetic instabilities". United States. doi:10.1063/1.2196876.
@article{osti_20782726,
title = {A fluid approach to linear beam plasma electromagnetic instabilities},
author = {Bret, A. and Deutsch, C. and Laboratoire de Physique des Gaz et des Plasmas},
abstractNote = {Electromagnetic instabilities found for an arbitrary oriented wave vector are typically difficult to investigate analytically within the framework of kinetic theory. The case of a small density relativistic electron beam interacting with a plasma is considered, and a two-fluid theory of the system including a kinetic pressure tensor is developed. The model obtained agrees very well with temperature effects found on oblique instabilities from a kinetic model, and the respective roles of parallel and transverse beam temperatures are correctly reproduced. An analysis of the phase velocities of the unstable waves allows for an explanation of this similarity. Such a formalism could be used to study oblique instabilities in settings where kinetic theory becomes problematic to implement.},
doi = {10.1063/1.2196876},
journal = {Physics of Plasmas},
number = 4,
volume = 13,
place = {United States},
year = {Sat Apr 15 00:00:00 EDT 2006},
month = {Sat Apr 15 00:00:00 EDT 2006}
}