Stabilization of the Quasi-interchange Mode in Tokamaks by Circulating Energetic Ions
Authors: Ya.I. Kolesnichenko, V.V. Lutsenko, V.S. Marchenko, and R.B. White
Abstract:
The influence of the circulating energetic ions on the quasi-interchange (QI) mode in tokamak plasmas with a wide shearless core and the central safety factor close to unity is considered. It is found that these ions tend to stabilize the QI mode in the case of co-injection and balanced injection, whereas the influence of counter-circulating ions is typically destabilizing because of finite-orbit-width effects. Specific examples relevant to tokamaks with large and small aspect ratio of the torus are considered.
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Published in: Physics of Plasmas 14, 012504 (2007)
doi: 10.1063/1.2434791
Copyright (2007) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
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Download PPPL-4197 Preprint November 2006 (356 KB)
Presented at the Fifth International Conference on Atomic and Molecular Data and Their Applications (ICAMDATA), 15–19 October 2006, Meudon, France.