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A kinetic cyclotron maser instability associated with a hollow beam of electronsA kinetic cyclotron maser instability associated with a hollow-beam distribution function is studied. The instability differs from that discussed for the gyrotron device in two respects: in the present case the momentum dispersion is substantial, and furthermore there exists a low-energy background plasma. On the basis of physical arguments it can be demonstrated that the hollow-beam distribution is far more unstable than the loss cone distribution which has been extensively investigated in recent years. A criterion for maximum growth rate is established on the basis of consideration of the resonance ellipse. The validity of this criterion is supported by the results of numerical calculation.
Document ID
19840045420
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Wu, C. S.
(Maryland Univ. College Park, MD, United States)
Freund, H. P.
(Maryland, University College Park, MD, United States)
Date Acquired
August 12, 2013
Publication Date
April 1, 1984
Publication Information
Publication: Radio Science
Volume: 19
ISSN: 0048-6604
Subject Category
Plasma Physics
Accession Number
84A28207
Funding Number(s)
CONTRACT_GRANT: NGL-21-002-005
Distribution Limits
Public
Copyright
Other

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