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An exact formula for the thermal and particle diffusivities based on the diffusive transport model in tokamak plasmas

Published online by Cambridge University Press:  13 March 2009

Christian Janicki
Christian Janicki
Affiliation:
Centre Canadien de fusion magnétique Varennes, Québec, J3X1S1, Canada
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Abstract

An exact solution for the thermal (Xe) or particle (D) diffusivities is derived (up to a constant factor) for the diffusive model in terms of the Fourier coefficients of the perturbed Te (or ne) signals. The common assumptions of constant ne and Xe (or D) generally used in the standard analytical or semi-analytical solutions are not required, since their radial dependences are taken explicitly into account. The effect of a damping (sink) term in the heat equation can also be implemented easily.

Type
Research Article
Information
Journal of Plasma Physics , Volume 46 , Issue 3 , December 1991 , pp. 487 - 493
Copyright
Copyright © Cambridge University Press 1991

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References

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