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Effects of particle trapping on distortion of the distribution function of RF-heated minority ions in a tokamak plasma

Published online by Cambridge University Press:  13 March 2009

D. Anderson  and
M. Lisak
D. Anderson
Affiliation:
Institute for Electromagnetic Field Theory and EURATOM Fusion Research (SERC), Chalmers University of Technology, S-412 96 Göteborg, Sweden
M. Lisak
Affiliation:
Institute for Electromagnetic Field Theory and EURATOM Fusion Research (SERC), Chalmers University of Technology, S-412 96 Göteborg, Sweden
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Abstract

The effect of toroidal geometry upon the distribution function of weakly RF-heated minority ions in a tokamak plasma is considered. An analytic scheme to solve the corresponding bounce-averaged Fokker-Planck equation is developed and explicit solutions are given in the limits of high and low velocities. It is found that trapped-particle effects may significantly reduce the RF-induced anisotropy in the distribution function.

Type
Research Article
Information
Journal of Plasma Physics , Volume 35 , Issue 1 , February 1986 , pp. 107 - 117
Copyright
Copyright © Cambridge University Press 1986

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References

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