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Electrostatic waves in periodic inhomogeneous plasma

Published online by Cambridge University Press:  13 March 2009

P. Bertrand ,
M. R. Feix  and
G. Baumann
P. Bertrand
Affiliation:
Groupe Physique Théorique et Plasma, Universite de Nancy
M. R. Feix
Affiliation:
Groupe Physique Théorique et Plasma, Universite de Nancy
G. Baumann
Affiliation:
Groupe Physique Théorique et Plasma, Universite de Nancy
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Abstract

In periodic, inhomogeneous plasma, the dispertion relation w(k) can begeneralized to a relation w(k, K), where K is the wave-number of the periodic steady state. Two models are studied: the ‘water-bag’ model and the ‘two-stream’ model. The solution for these models is obtained easily by the introduction of a Lagrangian formulation. Results are presented. It is shown that, in the water-bag case, the appearance of narrow bands of allowed frequencies practically discretizes the lower part of the spectrum. In the two-stream case, while the long wavelengths have a smaller growth rate, an increased instability is found for k/K = ½

Information

Type
Research Article
Information
Journal of Plasma Physics , Volume 6 , Issue 2 , October 1971 , pp. 351 - 366
Copyright
Copyright © Cambridge University Press 1971

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References

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