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Excitation of ion Bernstein and ion cyclotron waves by a gyrating ion beam in a plasma column

Published online by Cambridge University Press:  13 December 2011

Asheel Kumar  and
V.K. Tripathi
Asheel Kumar*
Affiliation:
Department of Physics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, India
V.K. Tripathi
Affiliation:
Department of Physics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, India
*
Address correspondence and reprint requests to: Asheel Kumar, Department of Physics, University of Allahabad, Allahabad-211002, India. E-mail: [email protected]
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Abstract

Gyrating ion beams, produced by quick ionization of neutral beams, employed for plasma heating, are susceptible to ion Bernstein and ion cyclotron instabilities. The Bernstein wave, having large parallel phase velocity, is excited via cyclotron interaction whereas the ion cyclotron wave with lower parallel phase velocity could be driven by Cerenkov interaction as well. The maximally growing modes have transverse wave number of the order of inverse ion Larmor radius. The nonlocal effects cause reduction in the growth rate.

Keywords

Cerenkov interactionCyclotron interactionIon Bernstein waveIon cyclotron wave
Type
Research Article
Information
Laser and Particle Beams , Volume 30 , Issue 1 , March 2012 , pp. 9 - 16
Copyright
Copyright © Cambridge University Press 2011

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