Random walk of magnetic field-lines for different values of the energy range spectral index

Journal Article · Thu Nov 15 00:00:00 EST 2007 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2803753· OSTI ID:21069911

Shalchi, A; Kourakis, I ^[1]

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1. Institut fuer Theoretische Physik, Lehrstuhl IV, Weltraum-und Astrophysik, Ruhr-Universitaet Bochum, D-44780 Bochum (Germany)

An analytical nonlinear description of field-line wandering in partially statistically magnetic systems was proposed recently. In this article the influence of the wave spectrum in the energy range onto field-line random walk is investigated by applying this formulation. It is demonstrated that in all considered cases we clearly obtain a superdiffusive behavior of the field-lines. If the energy range spectral index exceeds unity a free-streaming behavior of the field-lines can be found for all relevant length-scales of turbulence. Since the superdiffusive results obtained for the slab model are exact, it seems that superdiffusion is the normal behavior of field-line wandering.

• OSTI ID: 21069911
• Journal Information: Physics of Plasmas, Vol. 14, Issue 11; Other Information: DOI: 10.1063/1.2803753; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ASTROPHYSICS
ENERGY SPECTRA
GRAPH THEORY
INDEXES
MAGNETIC FIELDS
MAGNETOHYDRODYNAMICS
NONLINEAR PROBLEMS
PLASMA
PLASMA SIMULATION
RANDOMNESS
TURBULENCE