Hall current effects on tearing modes in rotating reverse field plasmas

Document Type

Article

Publication Date

1-1-1981

Abstract

It has been experimentally observed for some time that certain tearing modes in plasmas may be suppressed if the plasma rotates in a preferred direction. In this paper we treat the m = 0, finite-wavelength tearing mode in cylindrical geometry for a reversed-field plasma equilibrium and show that by generalizing Ohm's law to include Hall current terms, we are able to explain this effect of rotation on tearing modes. Our results agree qualitatively with earlier analysis and numerical simulations. We also show that our results are sensitive to the position of the outer conducting wall, and for wall positions sufficiently close to the plasma-vacuum interface, tearing modes may be quenched when the rotation reaches a critical value. These results follow from a boundary-layer analysis and numerical integration of the boundary-layer equations. © 1981, Cambridge University Press. All rights reserved.

Identifier

0019532317 (Scopus)

Publication Title

Journal of Plasma Physics

External Full Text Location

https://doi.org/10.1017/S0022377800022996

e-ISSN

14697807

ISSN

00223778

First Page

111

Last Page

131

Issue

1

Volume

25

Grant

ONR-N0014-78-C-0264

Fund Ref

Office of Naval Research

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