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Helicity waves propagating in a plasma

Published online by Cambridge University Press:  13 March 2009

Z. Yoshida
Z. Yoshida
Affiliation:
Department of Nuclear Engineering, The University of Tokyo, Hongo, Tokyo 113, Japan
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Abstract

There exist plasma waves that transport helicity although they do not propagate electromagnetic energy. The dispersion relations of such helicity waves are studied. The electric field of the waves is parallel to the perturbed magnetic field, and both are perpendicular to the perturbed current. In cross-field propagation, a helicity wave is decomposed into two transverse modes with different polarizations and a longitudinal part. The helicity waves are principally Alfvénic in the low-frequency limit. At high frequencies, the Faraday effect comes into the polarization.

Type
Research Article
Information
Journal of Plasma Physics , Volume 45 , Issue 3 , June 1991 , pp. 481 - 488
Copyright
Copyright © Cambridge University Press 1991

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References

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