ENERGETIC PARTICLE STABILIZATION OF INTERNAL KINK MODES
Energetic particles have been shown to destabilize Energetic particles have been shown to destabilize the m = 1 internal kink mode via a Landau like resonant the m = 1 internal kink mode via a Landau like resonant mechanism when their precessional drifts are unfavorable. mechanism when their precessional drifts are unfavorable. RF heating schemes might, however, be used to generate a R.F. heating schemes might, however, be used to generate a stabilzation of internal kink trapped population of energetic ions or electrons whose precessional drifts are only in the favorable direction (sloshing particles). The stability of the ideal internal kink mode in a tokamak with such anisotropic velocity distributions has been analyzed, and it is found that the mode can be stabilized by an energetic particle component with beta-ph epsilon' beta**2/pc- where beta-ph and beta-pc are the poloidal beta values of the hot component and core plasma, respectively. Implications for the resistive kink modes will also be discussed.
Bibliographic Reference: 27TH ANNUAL MEETING OF THE DIVISION OF PLASMA PHYSICS, SAN DIEGO (USA), NOV. 4-8, 1985 PAPER 3Q13, PROCEEDINGS P. 1422-1423
Record Number: 1989124129800 / Last updated on: 1987-01-01
Available languages: en