Relaxation rate of poloidal rotation in the banana regime
- 1 July 1991
- journal article
- Published by IOP Publishing in Plasma Physics and Controlled Fusion
- Vol. 33 (7) , 859-868
- https://doi.org/10.1088/0741-3335/33/7/008
Abstract
The time-dependent parallel viscosity (B. Del Pi a) is calculated in an axisymmetric toroidal plasma with arbitrary aspect ratio. By using this parallel viscosity, the relaxation rate nu p of the poloidal rotation in Tokamak plasmas is obtained in the banana regime. The analytical fit for this relaxation rate is also computed. In large-aspect-ratio Tokamaks, this relaxation rate nu p is found to be of the order nu ii square root epsilon and the previously-derived result nu p approximately nu ii by Shaing et al. (1989) is shown to be incorrect, where nu ii and epsilon are the ion-ion collision frequency and the inverse aspect ratio.Keywords
This publication has 7 references indexed in Scilit:
- Neoclassical transport of isotropic fast ionsPhysics of Fluids B: Plasma Physics, 1990
- Relaxation rate of poloidal rotation in the banana regime in tokamaksPhysics of Fluids B: Plasma Physics, 1989
- Ion thermal conductivity and ion distribution function in the banana regimePlasma Physics and Controlled Fusion, 1988
- Neoclassical transport of impurities in tokamak plasmasNuclear Fusion, 1981
- The ambipolarity paradox in toroidal diffusion, revisitedNuclear Fusion, 1978
- Effects of particle trapping on the slowing-down of fast ions in a toroidal plasmaNuclear Fusion, 1976
- DECAY OF POLOIDAL ROTATION IN A TOKAMAK PLASMAPhysics of Fluids, 1972