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Magnetoacoustic oscillations in a finite-beta current carrying plasma column

Published online by Cambridge University Press:  13 March 2009

M. L. Sawley
M. L. Sawley
Affiliation:
School of Physical Sciences, The Flinders University of South Australia, Bedford Park, S.A. 5042, Australia
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Abstract

Forced magnetoacoustic oscillations in a fully ionized, non-uniform, current carrying plasma column of finite beta are treated theoretically. The results of numerical calculations are given for the specific case of diffuse pinch equilibrium configurations. It is found that, for these configurations, the amplitude of the axial component of the oscillating magnetic field is enhanced and the frequency at which magnetoacoustic resonance occurs is raised. It is also found that the presence of an equilibrium axial current produces a substantial azimuthal component, in addition to the axial component, of the oscillating magnetic field.

Type
Research Article
Information
Journal of Plasma Physics , Volume 22 , Issue 2 , October 1979 , pp. 223 - 229
Copyright
Copyright © Cambridge University Press 1979

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References

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