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Anomalous absorption of the circularly polarized electromagnetic beams near the plasma frequency in a magnetized electron plasma

Published online by Cambridge University Press:  01 June 2007

S. R. SESHADRI
S. R. SESHADRI*
Affiliation:
109 North Whitney Way, Madison, WI 53705-2718, USA (s.r.seshadri@osa.org)
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Abstract

The propagation of circularly polarized electromagnetic beams along the magnetostatic field in an electron plasma is investigated. As a consequence of a strong interaction with the medium, the beam spreads rapidly on propagation near the cutoff frequencies and the cyclotron resonant frequency of the corresponding plane waves, as well as near the plasma frequency. The power absorption for unit length near the cyclotron frequency and the plasma frequency are determined. For tightly focused beams, there is significant power absorption near the plasma frequency as compared with that at the cyclotron resonant frequency.

Type
Papers
Information
Journal of Plasma Physics , Volume 73 , Issue 3 , June 2007 , pp. 315 - 330
Copyright
Copyright © Cambridge University Press 2006

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