Resonant coupling of ion-cyclotron waves to energetic helium ions

First measurements were 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...

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Bibliographic Details
Published in:Physical review letters 1994-07, Vol.73 (3), p.436-439
Main Authors: Finken, KH, Koch, R, Euringer, H, Van Wassenhove G, Boedo, JA, Gray, DS, Hillis, DL, Huet, P, Mank, G, Van Eester D, Van Nieuwenhoven R, Van Oost G, Tammen, HF
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700310 - Plasma Confinement- (1992-)
CHARGED PARTICLES
CONFINEMENT
CYCLOTRON RESONANCE
ENERGY RANGE
HELIUM IONS
ION CYCLOTRON-RESONANCE
IONS
KEV RANGE
KEV RANGE 100-1000
MAGNETIC FIELDS
PLASMA CONFINEMENT
RESONANCE
THERMONUCLEAR IGNITION
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Summary:First measurements were 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 center 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.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.73.436