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Title: Early Out-Of-Equilibrium Beam-Plasma Evolution

Abstract

We solve analytically the out-of-equilibrium initial stage that follows the injection of a radially finite electron beam into a plasma at rest and test it against particle-in-cell simulations. For initial large beam edge gradients and not too large beam radius, compared to the electron skin depth, the electron beam is shown to evolve into a ring structure. For low enough transverse temperatures, the filamentation instability eventually proceeds and saturates when transverse isotropy is reached. The analysis accounts for the variety of very recent experimental beam transverse observations.

Authors:
 [1];  [2];  [3];  [4]
  1. Laboratoire de Physique et Technologie des Plasmas (CNRS UMR 7648), Ecole Polytechnique, 91128 Palaiseau cedex (France)
  2. Laboratoire d'Optique Appliquee, ENSTA/Ecole Polytechnique (CNRS UMR 7639), 91761 Palaiseau cedex (France)
  3. Departement de Physique Theorique et Appliquee, CEA/DAM Ile-de-France, BP 12, 91680 Bruyeres-le-Chatel (France)
  4. Laboratoire de Physique des Gaz et des Plasmas (CNRS UMR 8578), Universite Paris XI, Batiment 210, 91405 Orsay cedex (France)
Publication Date:
OSTI Identifier:
20777110
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 96; Journal Issue: 11; Other Information: DOI: 10.1103/PhysRevLett.96.115004; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BEAM INJECTION; BEAM-PLASMA SYSTEMS; ELECTRON BEAMS; ELECTRONS; EQUILIBRIUM; EVOLUTION; ISOTROPY; PLASMA; PLASMA INSTABILITY; PLASMA SIMULATION

Citation Formats

Firpo, M.-C., Lifschitz, A.F., Lefebvre, E., and Deutsch, C. Early Out-Of-Equilibrium Beam-Plasma Evolution. United States: N. p., 2006. Web. doi:10.1103/PhysRevLett.96.115004.
Firpo, M.-C., Lifschitz, A.F., Lefebvre, E., & Deutsch, C. Early Out-Of-Equilibrium Beam-Plasma Evolution. United States. doi:10.1103/PhysRevLett.96.115004.
Firpo, M.-C., Lifschitz, A.F., Lefebvre, E., and Deutsch, C. Fri . "Early Out-Of-Equilibrium Beam-Plasma Evolution". United States. doi:10.1103/PhysRevLett.96.115004.
@article{osti_20777110,
title = {Early Out-Of-Equilibrium Beam-Plasma Evolution},
author = {Firpo, M.-C. and Lifschitz, A.F. and Lefebvre, E. and Deutsch, C.},
abstractNote = {We solve analytically the out-of-equilibrium initial stage that follows the injection of a radially finite electron beam into a plasma at rest and test it against particle-in-cell simulations. For initial large beam edge gradients and not too large beam radius, compared to the electron skin depth, the electron beam is shown to evolve into a ring structure. For low enough transverse temperatures, the filamentation instability eventually proceeds and saturates when transverse isotropy is reached. The analysis accounts for the variety of very recent experimental beam transverse observations.},
doi = {10.1103/PhysRevLett.96.115004},
journal = {Physical Review Letters},
number = 11,
volume = 96,
place = {United States},
year = {Fri Mar 24 00:00:00 EST 2006},
month = {Fri Mar 24 00:00:00 EST 2006}
}