Ambipolar Filamentation of Turbulent Magnetic Fields : A numerical simulation

We present the results of a 2-D, two fluid (ions and neutrals) simulation of the ambipolar filamentation process, in which a magnetized, weakly ionized plasma is stirred by turbulence in the ambipolar frequency range. The higher turbulent velocity of the neutrals in the most ionized regions gives ri...

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Bibliographic Details
Published in:arXiv.org 2000-05
Main Authors: Franqueira, M, Tagger, M, A I Gomez de Castro
Format: Article
Language:English
Subjects:
Computational fluid dynamics
Computer simulation
Fluid flow
Frequency ranges
Ionization
Magnetic flux
Turbulence
Online Access:Get full text
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Summary:We present the results of a 2-D, two fluid (ions and neutrals) simulation of the ambipolar filamentation process, in which a magnetized, weakly ionized plasma is stirred by turbulence in the ambipolar frequency range. The higher turbulent velocity of the neutrals in the most ionized regions gives rise to a non-linear force driving them out of these regions, so that the initial ionization inhomogeneities are strongly amplified. This effect, the ambipolar filamentation, causes the ions and the magnetic flux to condense and separate from the neutrals, resulting in a filamentary structure.
ISSN:2331-8422