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Wave excitation by inhomogeneous suprathermal electron beams

Published online by Cambridge University Press:  13 March 2009

H. P. Freund ,
D. Dillenburg  and
C. S. Wu
H. P. Freund
Affiliation:
Science Applications, Inc., McLean, Virginia 22102
D. Dillenburg
Affiliation:
Instituto de Fisica, Universidade Federal do Rio Grande do Sul, 90000 Porto Alegre RS, Brazil
C. S. Wu
Affiliation:
Institute for Physical Science and Technology, University of Maryland, College Park, Maryland 20742
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Extract

Wave excitation by an inhomogeneous suprathermal electron beam in a homogeneous magnetized plasma is investigated. Not only is the beam density non-uniform, but the beaming electrons also have a sheared bulk velocity. The general dispersion equation including both electrostatic and electromagnetic effects is derived. Particular attention is paid to the whistler mode. It is found that the density-gradient and velocity-shear effects are important for waves with frequencies close to the lower-hybrid resonance frequency.

Type
Articles
Information
Journal of Plasma Physics , Volume 27 , Issue 1 , February 1982 , pp. 69 - 81
Copyright
Copyright © Cambridge University Press 1982

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References

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