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Title: Nonlinear plasma wave in magnetized plasmas

Nonlinear axisymmetric cylindrical plasma oscillations in magnetized collisionless plasmas are a model for the electron fluid collapse on the axis behind an ultrashort relativisically intense laser pulse exciting a plasma wake wave. We present an analytical description of the strongly nonlinear oscillations showing that the magnetic field prevents closing of the cavity formed behind the laser pulse. This effect is demonstrated with 3D PIC simulations of the laser-plasma interaction. An analysis of the betatron oscillations of fast electrons in the presence of the magnetic field reveals a characteristic “Four-Ray Star” pattern.
Authors:
 [1] ;  [2] ;  [2] ; ; ;  [1] ; ;  [3] ;  [4] ;  [3] ;  [4]
  1. Kansai Photon Science Institute, JAEA, Kizugawa, Kyoto 619-0215 (Japan)
  2. (Russian Federation)
  3. Photon Pioneers Center, Osaka University, 2-8 Yamadaoka, Suita, Osaka 565-0871 (Japan)
  4. (Japan)
Publication Date:
OSTI Identifier:
22220670
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 20; Journal Issue: 8; Other Information: (c) 2013 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; AXIAL SYMMETRY; BETATRON OSCILLATIONS; COLLISIONLESS PLASMA; CYLINDRICAL CONFIGURATION; ELECTRONS; LASERS; LIGHT TRANSMISSION; MAGNETIC FIELDS; NONLINEAR PROBLEMS; PLASMA SIMULATION; PLASMA WAVES; PULSES; RELATIVISTIC PLASMA