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Dispersion surfaces

Published online by Cambridge University Press:  13 March 2009

Mats André
Mats André
Affiliation:
Kiruna Geophysical Institute, University of Umeå, S-901 87 Umeå, Sweden
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Abstract

The dispersion relation of linear waves in a non-relativistic, collisionless and homogeneous magnetized plasma is solved by numerical methods. Both electrostatic and electromagnetic waves with frequencies from below the ion gyrofrequency to above the electron gyrofrequency are studied for all angles of propagation. Modes occurring in a cold plasma as well as waves dependent on thermal effects are included. Dispersion surfaces, that is plots of frequency versus wave vector components, are presented for some plasma models. This presentation shows all interesting waves clearly and reveals how different modes are related. The dispersion surfaces can be used as an aid, for example, when comparing wave observations and theory, and they may also help to avoid confusing nomenclature.

Type
Research Article
Information
Journal of Plasma Physics , Volume 33 , Issue 1 , February 1985 , pp. 1 - 19
Copyright
Copyright © Cambridge University Press 1985

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References

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