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Ion beam ordinary electromagnetic mode instability

Published online by Cambridge University Press:  13 March 2009

John D. Gaffey
Affiliation:
Center for Theoretical Physics, Department of Physics and Astronomy, University of Maryland

Abstract

The instability of the ordinary mode propagating perpendicular to the magnetic field is discussed for two ion beams counter-streaming along the magnetic field through a plasma of stationary electrons and ions. The instability criterion gives the necessary and sufficient condition for a purely growing mode. Although the instability threshold is high (u/Voi ≳ (2βoiNoi/Noi)-½ if the streaming velocity is 10% larger than the threshold value), large growth rates of the order of the ion cyclotron frequency result.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1975

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References

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