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Resistive instability of a low-beta plasma cylinder without assumed mode localization

Published online by Cambridge University Press:  13 March 2009

R. J. Wright
R. J. Wright
Affiliation:
Imperial College of Science and Technology, London
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Abstract

Resistive instabilities in a low-β incompressible cylindrical model are investigated in a weakly sheared magnetic field. No boundary layer assumptions are made. Previous analytic results are found to fail badly when resistivity becomes too large, causing peaking in the growth rate dependence upon resistivity, and when the resonant surface approaches the axis, causing stabilization. The m = 1 tearing mode is investigated and found to lack the cut-off of higher m numbers. Finite Larmor radius effects have expected stabilizing properties, but produce a new, delocalized instability.

Type
Research Article
Information
Journal of Plasma Physics , Volume 18 , Issue 1 , August 1977 , pp. 15 - 30
Copyright
Copyright © Cambridge University Press 1977

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References

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