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Anomalous test particle transport in turbulent MHD fields

B. WEYSSOW1,* , V. REMACLE1, B. TEACA1,2, M. NEGREA2, I. PETRISOR2, C. TONIOLO1

Affiliation

  1. Physique Statistique – Plasmas, Association Euratom-Etat Belge, Université Libre de Bruxelles, Campus Plaine CP231, Bd. du Triomphe, 1050 Bruxelles, Belgium
  2. Department of Physics, Association Euratom-MEdC, Romania, University of Craiova, 13 A.I. Cuza Street, 200585 Craiova, Romania

Abstract

Anisotropic stochastic magnetic fields lead to significant changes in the test particle transport as compared to isotropic cases. The analysis of the Langevin equations for the test particles, when considering both the magnetic anisotropy and the collisions, lead to anisotropic transport ranging from subdiffusion to diffusion. In absence of collisions, the transport is diffusive in all directions but with different diffusion coefficients. In the case of MHD produced fields, the transport in the plane perpendicular to the main magnetic field is strongly reduced, and appears to be almost diffusive while the parallel transport is still in the ballistic regime..

Keywords

Magnetic shear, Magnetic turbulence, MHD.

Submitted at: March 1, 2008
Accepted at: July 10, 2008

Citation

B. WEYSSOW, V. REMACLE, B. TEACA, M. NEGREA, I. PETRISOR, C. TONIOLO, Anomalous test particle transport in turbulent MHD fields, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 8, pp. 1938-1941 (2008)