Abstract
Energetic trapped particles are shown to have a destabilizing effect on the internal kink mode in tokamaks. The growth rate is near the ideal magnetohydrodynamic value, but the frequency is comparable to the trapped-particle precession frequency. A model for the instability cycle gives stability properties, associated particle losses, and neutron emissivity consistent with the "fishbone" events observed in poloidal divertor experiments.
- Received 18 October 1983
DOI:https://doi.org/10.1103/PhysRevLett.52.1122
©1984 American Physical Society
