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Magnetosonic wave propagation in the mode conversion regime

Published online by Cambridge University Press:  13 March 2009

Y. Lapierre
Affiliation:
Association Euratom-Cea sur la Fusion, Boîte Postale n°6, 92260 Fontenay-aux-Roses, France

Abstract

The propagation of the fast magnetosonic wave is studied, taking into account the effect of the two-ion hybrid layer. Using a one-dimensional model, which includes density and magnetic field gradients, the wave equation is solved in the cold plasma approximation. The existence of radial eigenmodes confined between the two-ion hybrid layer and the low field side wall is predicted. Comparison with experimental data obtained on the TFR tokamak confirms the theoretical conclusions. Toroidal eigenmodes are observed even in the mode conversion regime when the antenna is on the low magnetic field side.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1983

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