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Minority-ion distribution function of a plasma under fundamental and second-harmonic ion-cyclotron heating

Published online by Cambridge University Press:  13 March 2009

B. Weyssow
B. Weyssow
Affiliation:
Association EURATOM—Etat Belge pour la Fusion, Physique Statistique, Plasmas Optique Non Linéaire, Université Libre de Bruxelles, Campus Plaine U.L.B., CP 231, Boulevard du Triomphe, B-1050 Bruxelles, Belgique
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Abstract

The distribution function of the minority ions during ion-cyclotron heating is calculated from a kinetic equation composed of a Landau collision term and a surface-averaged quasi-linear heating term. The kinetic equation is solved by a moment method in which the minority-ion distribution function is expanded in irreducible tensorial Hermite polynomials. The coefficients of the expansion are shown to be solutions of a system of coupled algebraic equations, and the effective minority-ion temperature is deduced from a compatibility constraint. The latter equation is in general too complicated to be solved analytically. The distribution function obtained here is therefore a semi-analytical result.

Type
Research Article
Information
Journal of Plasma Physics , Volume 53 , Issue 1 , February 1995 , pp. 3 - 23
Copyright
Copyright © Cambridge University Press 1995

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