Dynamo effect and current drive due to magnetic fluctuations in sheared magnetic field
Abstract
It is shown that when the mean electromotive force in a plasma is evaluated in terms of the two-point correlation of driven magnetic field fluctuations (as would be appropriate for problems related to current drive by waves), there is no β effect; i.e., the terms associated with gradients of the mean field vanish. The relevance of this result to the problem of current drive is discussed.
- Publication:
-
Physics of Fluids B
- Pub Date:
- August 1991
- DOI:
- 10.1063/1.859628
- Bibcode:
- 1991PhFlB...3.2150A
- Keywords:
-
- Dynamo Theory;
- Electromotive Forces;
- Magnetic Field Configurations;
- Plasma Currents;
- Conducting Fluids;
- Plasma-Electromagnetic Interaction;
- Plasma Physics