Kinetic Modifications to MHD Phenomena in Toroidal Plasmas
Particle kinetic effects involving small spatial and fast temporal scales can strongly affect MHD phenomena and the long time behavior of plasmas. In particular, kinetic effects such as finite ion gyroradii, trapped particle dynamics, and wave-particle resonances have been shown to greatly modify the stability of MHD modes. Here, the kinetic effects of trapped electron dynamics and finite ion gyroradii are shown to have a large stabilizing effect on kinetic ballooning modes in low aspect ratio toroidal plasmas such as NSTX [National Spherical Torus Experiment]. We also present the analysis of Toroidicity-induced Alfven Eigenmodes (TAEs) destabilized by fast neutral-beam injected ions in NSTX experiments and TAE stability in ITER due to alpha-particles and MeV negatively charged neutral beam injected ions.
- Research Organization:
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC) (US)
- DOE Contract Number:
- AC02-76CH03073
- OSTI ID:
- 835899
- Report Number(s):
- PPPL-4005; TRN: US0500428
- Resource Relation:
- Other Information: PBD: 3 Sep 2004
- Country of Publication:
- United States
- Language:
- English
Similar Records
Energetic particle effects on global MHD modes
Energetic particle effects on global magnetohydrodynamic modes
Related Subjects
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALPHA PARTICLES
ASPECT RATIO
KINETICS
MODIFICATIONS
STABILITY
TRAPPED ELECTRONS
ALFVEN WAVES
BALLOONING INSTABILITIES
FINITE LARMOR EFFECTS
KINETIC THEORY
WAVE INTERACTION
PARTICLES
TOROIDICITY-INDUCED ALFVEN EIGENMODE (TAE)
KINETIC BALLOONING MODE (KBM)