Destabilization of the internal kink by energetic-circulating ions

Journal Article · Mon May 31 00:00:00 EDT 1993 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.70.3428· OSTI ID:6565945

Betti, R ^[1]; Freidberg, J P ^[2]

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1. Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623-1299 (United States)
2. Plasma Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

A stability analysis is carried out for the [ital m]=1 internal kink mode, in the presence of energetic circulating particles. It is found that, including the effect of finite radial particle-orbit excursion, the [ital m]=1 internal kink mode is strongly destabilized by the resonance interaction with the energetic passing particles. Such an instability could explain the experimental observations of the fishbone'' oscillations during tangential neutral beam injection [W. W. Heidbrink [ital et] [ital al]., Phys. Rev. Lett. 57, 835 (1986)].

• DOE Contract Number: FC03-92SF19460
• OSTI ID: 6565945
• Journal Information: Physical Review Letters; (United States), Vol. 70:22; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
KINK INSTABILITY
STABILIZATION
PLASMA
FISHBONE INSTABILITY
IONS
MAGNETIC CONFINEMENT
NEUTRAL ATOM BEAM INJECTION
OSCILLATION MODES
RESONANCE
ROTATION
THERMONUCLEAR REACTIONS
TRAJECTORIES
BEAM INJECTION
CHARGED PARTICLES
CONFINEMENT
INSTABILITY
MOTION
NUCLEAR REACTIONS
NUCLEOSYNTHESIS
PLASMA CONFINEMENT
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
SYNTHESIS
700340* - Plasma Waves
Oscillations
& Instabilities- (1992-)