Role of Alfv{acute e}n instabilities in energetic ion transport

Journal Article · Sat May 01 00:00:00 EDT 1999 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.873446· OSTI ID:344913

Bernabei, S; Bell, M G; Budny, R; Darrow, D; Fredrickson, E D; Gorelenkov, N; Hosea, J C; Majeski, R; Mazzucato, E; Nazikian, R; Phillips, C K; Rogers, J H; Schilling, G; White, R; Wilson, J R; Zonca, F; Zweben, S ^[1]

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1. Princeton Plasma Physics Laboratory, P.O. Box 451, Princeton, New Jersey 08543 (United States)

Experiments with plasma heating by waves at the ion cyclotron resonance of a minority species have shown that the heating efficiency degrades above a certain power threshold. It is found that this threshold is due to the destabilization of a branch of shear Alfv{acute e}n waves, the Energetic Particle Modes, which causes a diffusive loss of fast ions. These modes not only play a fundamental role in the transport of the fast ions, but appear closely related to the formation of giant sawteeth. {copyright} {ital 1999 American Institute of Physics.}

• OSTI ID: 344913
• Report Number(s): CONF-981127-; ISSN 1070-664X; TRN: 99:005506
• Journal Information: Physics of Plasmas, Vol. 6, Issue 5; Conference: 40. annual physics of plasmas meeting, APS Division of Plasma Physics, New Orleans, LA (United States), 16-20 Nov 1998; Other Information: PBD: May 1999
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION
ALFVEN WAVES
TOKAMAK DEVICES
PLASMA INSTABILITY
CHARGED-PARTICLE TRANSPORT
PLASMA HEATING
ICR HEATING
PLASMA IMPURITIES