Effects of neutral beam injection on impurity transport in Tokamaks
Abstract
A self consistent theory is presented for particle flows in the flux surface, radial particle fluxes and the radial electric field in a Tokamak. The effects of beam impurity momentum exchange, radial transfer of toroidal momentum, and the poloidal variation in density and potential which ensue when v sub phi approx. = v sub th are treated. The interaction among these effects is nonlinear. Model problem predictions based on the theory indicate enhanced inward impurity transport with strong counter injection and outward impurity transport with strong coinjection of neutral beams.
- Publication:
-
Unknown
- Pub Date:
- September 1983
- Bibcode:
- 1983enbi.rept.....S
- Keywords:
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- Beam Injection;
- Impurities;
- Tokamak Devices;
- Transport Theory;
- Electric Fields;
- Neutral Beams;
- Particles;
- Predictions;
- Plasma Physics