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

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

Research output: Contribution to journalArticle

2 Citations (Scopus)

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.
LanguageEnglish
Article number066404
Number of pages6
JournalPhysical Review E
Volume79
Issue number6
DOIs
Publication statusPublished - Jun 2009

Fingerprint

Vortex
Numerical Study
Turbulence
Magnetic Field
turbulence
vortices
Electron
magnetic fields
electrons
Inhomogeneity
inhomogeneity
Plasma
Simulation Study
Laser-produced Plasma
plasma temperature
laser plasmas
plasma density
External Field
Power Law
simulation

Keywords

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

Cite this

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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.",
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Numerical study of the magnetic electron drift vortex mode turbulence in a nonuniform magnetoplasma. / Shaikh, Dastgeer; Eliasson, B.; Shukla, P. K.

In: Physical Review E, Vol. 79, No. 6, 066404, 06.2009.

Research output: Contribution to journalArticle

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AU - Shaikh, Dastgeer

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KW - drift instability

KW - magnetic fields

KW - plasma density

KW - plasma magnetohydrodynamics

KW - plasma production by laser

KW - plasma simulation

KW - plasma temperature

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