Influence of the Weibel instability on the expansion of a plasma slab into a vacuum.

نویسندگان

  • C Thaury
  • P Mora
  • A Héron
  • J C Adam
  • T M Antonsen
چکیده

The development of the Weibel instability during the expansion of a thin plasma foil heated by an intense laser pulse is investigated, using both analytical models and relativistic particle-in-cell simulations. When the plasma has initially an anisotropic electron distribution, this electromagnetic instability develops from the beginning of the expansion. Then it contributes to suppress the anisotropy and eventually saturates. After the saturation, the strength of the magnetic field decreases because of the plasma expansion until it becomes too weak to maintain the distribution isotropic. For this time, the anisotropy rises as electrons give progressively their longitudinal energy to ions, so that a new instability can develop.

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عنوان ژورنال:
  • Physical review. E, Statistical, nonlinear, and soft matter physics

دوره 82 2 Pt 2  شماره 

صفحات  -

تاریخ انتشار 2010