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Electrostatic-field fluctuations and form factors in multi-component non-equilibrium plasmas

Published online by Cambridge University Press:  13 March 2009

V. V. Belyi  and
I. Paiva-Veretennicoff
V. V. Belyi
Affiliation:
Izmiran, USSR Academy of Science, 142092 Moscow Region, U.S.S.R.
I. Paiva-Veretennicoff
Affiliation:
Algemene Natuurkunde, Faculteit Toegepaste Wetenschappen, Vrije Universiteit Brussel, Pleinlaan 2-1050 Brussel, Belgium
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Abstract

Taking the Langevin approach to the evaluation of kinetic fluctuations with respect to a Maxwellian distribution characterized by different constant temperatures and mean velocities per species, the form factors and electrostatic field fluctuations of a multi-component plasma are derived. It is shown that the generalization of the Callen-Welton theorem for non-equilibrium systems, derived using thermodynamical arguments, has to be revised. Explicit values of the intensities of the electrostatic-field fluctuations are calculated, in the high-and low-frequency regimes. The former do not require any modelling of the collision integral. The latter have been calculated with a model that is more correct and simpler, than the Bhatnagar-Gross-Krook model.

Type
Research Article
Information
Journal of Plasma Physics , Volume 43 , Issue 1 , February 1990 , pp. 1 - 21
Copyright
Copyright © Cambridge University Press 1990

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