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Reply to the Comments by G. E. Vekstein, D. D. Ryutov and R. Z. Sagdeev

Published online by Cambridge University Press:  13 March 2009

R. Balescu
R. Balescu
Affiliation:
Faculté des Sciences CP 231, Ascociation Euratom–Etam Beige, Université Libre de Bruxelles, Campus Plaine, 1050 Bruxelles, Belgium
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Extract

I cannot agree with the reasoning of Vekstein, Ryutov & Sagdeev (1982) (VRS), the more so as I see no basic contradiction between their results and mine.

The basic equations of the quasi-linear theory are the kinetic equations determining the time evolution of the distribution functions of the electrons and ions, ∂tfe,i and of the spectral densities ∂tψσ(κ) (plus the definition of the diffusion coefficient and the dispersion relations). It is agreed that these equations must be satisfied in any event. The marginal stability is an added approximation (as VRS, of course, admit), and can only be accepted if it is compatible with the basic equations.

Type
Articles
Information
Journal of Plasma Physics , Volume 27 , Issue 1 , February 1982 , pp. 191
Copyright
Copyright © Cambridge University Press 1982

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References

REFERENCES

Balescu, R. 1980 J. Plasma Phys. 24, 551.Google Scholar
Vekstein, G. E., Ryutov, D. D. & Sagdeev, R. Z. 1982 J. Plasma Phys. 27, 189.Google Scholar