Random walk of magnetic field-lines for different values of the energy range spectral index
Abstract
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.
- Authors:
-
- Institut fuer Theoretische Physik, Lehrstuhl IV, Weltraum-und Astrophysik, Ruhr-Universitaet Bochum, D-44780 Bochum (Germany)
- Publication Date:
- OSTI Identifier:
- 21069911
- Resource Type:
- Journal Article
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 14; Journal Issue: 11; Other Information: DOI: 10.1063/1.2803753; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ASTROPHYSICS; ENERGY SPECTRA; GRAPH THEORY; INDEXES; MAGNETIC FIELDS; MAGNETOHYDRODYNAMICS; NONLINEAR PROBLEMS; PLASMA; PLASMA SIMULATION; RANDOMNESS; TURBULENCE
Citation Formats
Shalchi, A, and Kourakis, I. Random walk of magnetic field-lines for different values of the energy range spectral index. United States: N. p., 2007.
Web. doi:10.1063/1.2803753.
Shalchi, A, & Kourakis, I. Random walk of magnetic field-lines for different values of the energy range spectral index. United States. https://doi.org/10.1063/1.2803753
Shalchi, A, and Kourakis, I. 2007.
"Random walk of magnetic field-lines for different values of the energy range spectral index". United States. https://doi.org/10.1063/1.2803753.
@article{osti_21069911,
title = {Random walk of magnetic field-lines for different values of the energy range spectral index},
author = {Shalchi, A and Kourakis, I},
abstractNote = {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.},
doi = {10.1063/1.2803753},
url = {https://www.osti.gov/biblio/21069911},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 11,
volume = 14,
place = {United States},
year = {Thu Nov 15 00:00:00 EST 2007},
month = {Thu Nov 15 00:00:00 EST 2007}
}
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