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Excitation of thermonuclear cone instabilities by toroidal equilibrium distributions of high-energy alpha particles in tokamaks

Published online by Cambridge University Press:  13 March 2009

M. Lisak ,
H. Hamnén  and
D. Anderson
M. Lisak
Affiliation:
Institute for Electromagnetic Field Theory, Chalmers University of Technology, S-412 96 Göteborg, Sweden
H. Hamnén
Affiliation:
Institute for Electromagnetic Field Theory, Chalmers University of Technology, S-412 96 Göteborg, Sweden
D. Anderson
Affiliation:
Institute for Electromagnetic Field Theory, Chalmers University of Technology, S-412 96 Göteborg, Sweden
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Abstract

The possibility of a new set of thermonuclear cone instabilities in tokamaks is demonstrated. These instabilities are caused by an inherent anisotropy existing in the alpha-particle velocity distribution function owing to the finite width of the particle orbits in combination with a spatially varying particle source. The conditions for the excitation of shear Alfvén waves by well-trapped alpha particles are studied.

Type
Research Article
Information
Journal of Plasma Physics , Volume 45 , Issue 2 , April 1991 , pp. 229 - 238
Copyright
Copyright © Cambridge University Press 1991

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References

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