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

Dastgeer Shaikh, B. Eliasson, and P. K. Shukla
Phys. Rev. E 79, 066404 – Published 18 June 2009

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.

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  • Received 19 January 2009

DOI:https://doi.org/10.1103/PhysRevE.79.066404

©2009 American Physical Society

Authors & Affiliations

Dastgeer Shaikh1, B. Eliasson2,3, and P. K. Shukla2,3,4,5,6

  • 1Department of Physics and Center for Space Plasma and Aeronomic Research (CSPAR), The University of Alabama in Huntsville, Huntsville, Alabama 35899, USA
  • 2Institut für Theoretische Physik IV, Ruhr-Universität Bochum, D-44780 Bochum, Germany
  • 3Department of Physics, Umeå University, SE-901 87 Umeå, Sweden
  • 4Department of Physics, Scottish Universities Physics Alliance, University of Strathclyde, Glasgow, G4 0NG Scotland, United Kingdom
  • 5GoLP/Instituto de Plasmas e Fusao Nuclear, Instituto Superior Técnico, 1049-001 Lisboa, Portugal
  • 6School of Physics, University of KwaZulu-Natal, Durban 4000, South Africa

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Issue

Vol. 79, Iss. 6 — June 2009

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