Plasma Physics Reports

, Volume 32, Issue 11, pp 921–926

Formation of nonquasineutral vortex plasma structures with a zero net current

  • A. V. Gordeev
Nonlinear Phenomena
  • 28 Downloads

Abstract

A nonquasineutral vortex structure with a zero net current is described that arises as a result of electron drift in crossed magnetic and electric fields, the latter being produced by charge separation on a spatial scale of about the magnetic Debye radius rB = |B|/(4πene). In such a structure with a radius of rrB, the magnetic field is maintained by a drift current on the order of the electron Alfvén current JAe = mec3/(2e) and can become as strong as Bmec2/(er). Estimates show that, in a plasma with a density of ne = 1021−1023 cm−3 and with nonzero electron vorticity driven by high-power laser radiation on a time scale on the order of θpe−1, magnetic fields with a strength of B ∼ 108−109 G are generated on micron and submicron scales. The system with closed current that is considered in the present paper can also serve as a model of hot spots in the channel of a Z-pinch.

PACS numbers

52.25.Xz 52.30.-q 52.30.Ex 52.55.-s 

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Copyright information

© Pleiades Publishing, Inc. 2006

Authors and Affiliations

  • A. V. Gordeev
    • 1
  1. 1.Russian Research Centre Kurchatov InstituteMoscowRussia

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