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A SPHERICAL PLASMA DYNAMO EXPERIMENT

delete2009-07-02
delete39
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OA
AI
E
Erik Spence *
K
Klaus Reuter
C
C. B. Forest
DOI：10.1088/0004-637X/700/1/470delete
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Abstract

Abstract

En 中文
We propose a plasma experiment to be used to investigate fundamental properties of astrophysical dynamos. The highly conducting, fast-flowing plasma will allow experimenters to explore systems with magnetic Reynolds numbers an order of magnitude larger than those accessible with liquid-metal experiments. The plasma is confined using a ring-cusp strategy and subject to a toroidal differentially rotating outer boundary condition. As proof of principle, we present magnetohydrodynamic simulations of the proposed experiment. When a von Karman-type boundary condition is specified, and the magnetic Reynolds number is large enough, dynamo action is observed. At different values of the magnetic Prandtl and Reynolds numbers the simulations demonstrate either laminar or turbulent dynamo action.
Keywords:
ISM: magnetic fields
MHD
plasmas
stars: magnetic fields

Journal

Astrophysical Journal cover
Astrophysical Journal
IF:
5.4
Papers:
8.3W
Citations:
32.0W

Organization

E
euratom
Scholars:
2.3K
Papers: 798
Citations: 0
M
Max Planck Society
Scholars:
8.2W
Papers: 7.7W
Citations: 3.3W
U
university of toronto
Scholars:
14.7W
Papers: 12.0W
Citations: 165
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