Numerical study of the magnetic electron drift vortex mode turbulence in a nonuniform magnetoplasma
2009 (English)In: Physical Review E. Statistical, Nonlinear, and Soft Matter Physics, ISSN 1063-651X, E-ISSN 1095-3787, Vol. 79, no 6, 066404-066410 p.Article in journal (Refereed) Published
Asimulation study of the magnetic electron drift vortex (MEDV) modeturbulence in a magnetoplasma in the presence of inhomogeneities inthe plasma temperature and density, as well as in theexternal magnetic field, is presented. The study shows that theinfluence of the magnetic field inhomogeneity is to suppress streamerlikestructures observed in previous simulation studies without background magnetic fields.The MEDV mode turbulence exhibits nonuniversal (non-Kolmogorov-type) spectra for differentsets of the plasma parameters. In the presence of aninhomogeneous magnetic field, the spectrum changes to a 7/3 powerlaw, which is flatter than without magnetic field gradients. Therelevance of this work to laser-produced plasmas in the laboratoryis briefly mentioned.
Place, publisher, year, edition, pages
American Physical Society , 2009. Vol. 79, no 6, 066404-066410 p.
drift instability, magnetic fields, plasma density, plasma magnetohydrodynamics, plasma production by laser, plasma simulation, plasma temperature, plasma turbulence
IdentifiersURN: urn:nbn:se:umu:diva-24982DOI: 10.1103/PhysRevE.79.066404OAI: oai:DiVA.org:umu-24982DiVA: diva2:228471