Plasma transport across a braided magnetic field
Abstract
Magnetic braiding in a region refers to a condition where magnetic surfaces are destroyed and magnetic lines wander about in a stochastic manner. Electron transport across a locally braided magnetic field in a plasma is examined by using simple fluid and particle models with a quasi-steady field. Estimates are obtained for the relaxation rates of density, current, and electron-temperature perturbations. Diffusion is considered from a single-particle point of view, and applications of the results to present-day tokamaks are discussed. It is noted that plasma transport in a braided magnetic field lends itself well to study by computer simulation.
- Publication:
-
Nuclear Fusion
- Pub Date:
- March 1978
- Bibcode:
- 1978NucFu..18..353S
- Keywords:
-
- Electron Diffusion;
- Magnetic Fields;
- Magnetohydrodynamic Flow;
- Particle Motion;
- Electron Energy;
- Lines Of Force;
- Plasma Density;
- Stochastic Processes;
- Tokamak Devices;
- Plasma Physics