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Study of longitudinal electron oscillations in a plasma with a cut-off Maxwellian velocity distribution

Published online by Cambridge University Press:  13 March 2009

J. G. Trotignon  and
M. R. Feix
J. G. Trotignon
Affiliation:
C.R.P.E./P.C.E. — Laboratoire du C.N.R.S. — Université d'Orléans
M. R. Feix
Affiliation:
C.R.P.E./P.C.E. — Laboratoire du C.N.R.S. — Université d'Orléans
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Abstract

Using a Van Kampen treatment, we study the longitudinal electron oscillations for a plasma with a cut-off Maxwellian velocity distribution. Having defined and computed excitation coefficients in the real w, k plane, we represent this ‘wave density’ through the greyness of this plane. This representation should be useful as a help to the experimenter. Moreover we show the appearance of a slightly damped pole with a phase velocity slightly smaller than the cut-off velocity Vc if this velocity is in the interval 2 to 4VT and a modification of the Landau mode which propagates for higher and higher frequencies when Vc decreases.

Type
Research Article
Information
Journal of Plasma Physics , Volume 17 , Issue 1 , February 1977 , pp. 13 - 22
Copyright
Copyright © Cambridge University Press 1977

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References

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