Numerical study of the magnetic electron drift vortex mode turbulence in a nonuniform magnetoplasma

Dastgeer Shaikh, B. Eliasson, P. K. Shukla

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Abstract

A simulation study of the magnetic electron drift vortex (MEDV) mode turbulence in a magnetoplasma in the presence of inhomogeneities in the plasma temperature and density, as well as in the external magnetic field, is presented. The study shows that the influence of the magnetic field inhomogeneity is to suppress streamerlike structures observed in previous simulation studies without background magnetic fields. The MEDV mode turbulence exhibits nonuniversal (non-Kolmogorov-type) spectra for different sets of the plasma parameters. In the presence of an inhomogeneous magnetic field, the spectrum changes to a 7/3 power law, which is flatter than without magnetic field gradients. The relevance of this work to laser-produced plasmas in the laboratory is briefly mentioned.
Original languageEnglish
Article number066404
Number of pages6
JournalPhysical Review E
Volume79
Issue number6
DOIs
Publication statusPublished - Jun 2009

Keywords

  • drift instability
  • magnetic fields
  • plasma density
  • plasma magnetohydrodynamics
  • plasma production by laser
  • plasma simulation
  • plasma temperature
  • plasma turbulence

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