Density peaking in the JFT-2M tokamak plasma with counter neutral beam injection
Abstract
A significant particle pinch and reduction of the effective thermal diffusivity are observed after switching the neutral beam direction from co- to counter- injection in the JFT-2M tokamak. A time delay in the occurrence of density peaking to that of plasma rotation is found. This shows that the particle pinch is related to the profile of the electric field as determined by the plasma rotation profile. The measured particle flux shows qualitative agreement with the theoretically-predicted inward pinch.
- Publication:
-
Unknown
- Pub Date:
- May 1991
- Bibcode:
- 1991dpjm.rept.....I
- Keywords:
-
- Beam Injection;
- Neutral Beams;
- Plasma Control;
- Plasma Density;
- Plasma Pinch;
- Rotating Plasmas;
- Tokamak Devices;
- Beam Currents;
- Density Distribution;
- Electric Fields;
- Plasma Currents;
- Plasma Heating;
- Plasma-Particle Interactions;
- Thermal Diffusivity;
- Time Lag;
- Plasma Physics