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Ordinary-mode electromagnetic instability for counter-streaming plasmas with anisotropic temperatures

Published online by Cambridge University Press:  13 March 2009

J. D. Gaffey ,
W. B. Thompson  and
C. S. Liu
J. D. Gaffey
Affiliation:
Department of Physics, University of California, San Diego
W. B. Thompson
Affiliation:
Department of Physics, University of California, San Diego
C. S. Liu
Affiliation:
Gulf General Atomic Company, San Diego
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Extract

The instability of the ordinary electromagnetic mode propagating perpendicular to an external magnetic field is studied for two counter-streaming plasmas with anisotropic temperatures. A necessary and sufficient condition for this instability is derived and the growth rate is calculated. Although instability can occur in a plasma with low β‖e, provided the streaming velocity is comparable to the parallel electron thermal velocity, β‖e of the order of unity and large electron temperature anisotropy (T‖e≫ T⊥e) are required for large growth rates. These large growth rates are typically of the order of the electron cyclotron frequency. Comparison with the electrostatic two-stream instability is made.

Type
Research Article
Information
Journal of Plasma Physics , Volume 7 , Issue 2 , April 1972 , pp. 189 - 206
Copyright
Copyright © Cambridge University Press 1972

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References

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