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The influence of azimuthal motion on ion resonance instability for a non-neutral plasma column

Published online by Cambridge University Press:  13 March 2009

H. C. Chen
H. C. Chen
Affiliation:
Naval Surface Warfare Center, White Oak, Silver Spring, Maryland 20903, U.S.A.
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Abstract

A general treatment of ion resonance instability for a non-neutral plasma column is performed using a macroscopic cold-fluid-Maxwell model. The azimuthal motion of the plasma components has an important influence on the behaviour of the instability. When the electrons are in slow rotational equilibrium, the instability occurs in both slow and fast ion rotational equilibrium. However, there is stability when the electrons are in fast rotational equilibrium except that the l = 1 mode becomes unstable and independent of plasma rotation. The kink (l = 1) mode only occurs when the plasma column boundary exceeds a certain threshold value that depends on the ratio of the plasma frequency to the cyclotron frequency.

Type
Research Article
Information
Journal of Plasma Physics , Volume 54 , Issue 2 , October 1995 , pp. 173 - 183
Copyright
Copyright © Cambridge University Press 1995

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References

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