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Abstract

This paper describes the first measurements performed to test a model prediction which states that the off-axis coupling of ion-cyclotron waves to energetic helium ions can generate either an inward or an outward drift of these particles. Ion-cyclotron waves with a power of up to 1 MW are coupled to energetic particles at the high field side, the low field side, or in the centre by varying the toroidal magnetic field. When changing the heating power or the resonance location, the variation of the concentration of the energetic helium in the plasma agrees qualitatively with the model predictions.

Additional information

Authors: FINKEN K H ET AL., Forschungszentrum Jülich GmbH (KFA) (DE);KOCH R ET AL., Ecole Royale Militaire, Bruxelles (BE);BOEDO J A, University of California at Los Angeles, Institute for Plasma and Fusion Research (US);GRAY D S, University of California at Los Angeles, Institute for Plasma and Fusion Research (US);HILLIS D L, Oak Ridge National Laboratory, Fusion Energy Division, Tennessee (US);TAMMEN H F, FOM Instituut voor Plasmafysica, Rijnhuizen, Nieuwegein (NL)
Bibliographic Reference: Article: Physical Review Letters, Vol. 73 (1994) No. 3, pp. 436-439
Record Number: 199411261 / Last updated on: 1994-11-25
Category: PUBLICATION
Original language: en
Available languages: en
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