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Stability of parametrically excited drift waves

Published online by Cambridge University Press:  13 March 2009

John G. Siambis
John G. Siambis
Affiliation:
Department of Electrical Engineering and Applied Space Science Carnegie-Mellon University, Pittsburgh, Pennsylvania
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Abstract

The propagation and stability of drift waves is examined, by means of a perturbation technique, in geometries where the magnitude of the magnetic field varies periodically along the field lines. Two sets of modes are found which can be driven unstable by resonant particles trapped in the magnetic field non-uniformity. One set of modes consists of standing waves with wavelength twice that of the magnetic field non-uniformity. The other set of modes consists of standing waves composed essentially of the sum of a component which does not vary along the line and a component which is a standing wave with wavelength equal to the wavelength of the magnetic field non-uniformity. The advantage of this method is that it predicts simply and pictorially the real frequency of oscillation for these modes.

Type
Research Article
Information
Journal of Plasma Physics , Volume 5 , Issue 3 , June 1971 , pp. 357 - 363
Copyright
Copyright © Cambridge University Press 1971

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References

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