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Theory of cyclotron resonance in a cylindrical non-neutral plasma

Gould, Roy W. (1995) Theory of cyclotron resonance in a cylindrical non-neutral plasma. Physics of Plasmas, 2 (5). pp. 1404-1411. ISSN 1070-664X. http://resolver.caltech.edu/CaltechAUTHORS:GOUpop95a

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Abstract

Resonances near the cyclotron frequency of a cylindrical non-neutral plasma column with radial density and angular velocity profiles are studied. Cold plasma and warm plasma models are used to consider the various multipole modes (eimtheta) for kz=0. For m=1 only a single resonance, a center of mass mode, is found. Its frequency is downshifted from the cyclotron frequency by an amount equal to the frequency of the low-frequency diocotron mode. For each m greater than 1 the cold plasma model gives a continuous absorption band with spatially localized absorption at each frequency, corresponding to a continuum of singular modes. In the warm plasma model, the continuuo go over to sets of discrete radially trapped azimuthally propagating Bernstein modes. For both cases, the plasma rotation Doppler-shifts the azimuthally propagating modes up in frequency. The angular velocity profile, together with plasma temperature, determine the spacing of the Bernstein modes within a band.


Item Type:Article
Additional Information:©1995 American Institute of Physics. (Received 28 November 1994; accepted 22 December 1994) The author is pleased to acknowledge E. Sarid for discussion of his experimental results and the Office of Naval Research for support of this work under Grant No. N000014-89-J-1264.
Subject Keywords:CYCLOTRON RESONANCE; COLD PLASMA; BERNSTEIN MODE; ROTATING PLASMA; DOPPLER EFFECT; CYLINDRICAL CONFIGURATION; NON–EQUILIBRIUM PLASMA; CORIOLIS FORCE
Record Number:CaltechAUTHORS:GOUpop95a
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:GOUpop95a
Alternative URL:http://dx.doi.org/10.1063/1.871356
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:1685
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:10 Feb 2006
Last Modified:26 Dec 2012 08:45

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