The fishbone instability in the DIII-D tokamak
Open Access
- 1 June 1990
- journal article
- Published by IOP Publishing in Nuclear Fusion
- Vol. 30 (6) , 1015-1025
- https://doi.org/10.1088/0029-5515/30/6/004
Abstract
Although most DIII-D plasmas are stable to the fishbone instability, fishbones are sometimes observed when βp 1.5 and e 5 × 1013 cm−3. These bursts are usually of minor significance operationally; however, under one condition, over 50% of the beam power was lost. The angle of beam injection has little effect on the virulence of the instability, suggesting that the fishbone instability in DIII-D is the ion diamagnetic branch of the internal kink.Keywords
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