Electron cyclotron heating of stellarator plasma with the ordinary and the extraordinary modes
Abstract
Experimental studies of electron cyclotron heating in stellarator plasma were carried out by injecting 40 kW of 35.5-GHz microwave power. Electron cyclotron heatings with the ordinary and the extraordinary modes injected from the low field side show almost the same heating efficiency of 2.2 x 10 to the 13th power eV/cu cm/kW at the averaged electron density of 6 x 10 to the 12th power/cu cm. Efficient heating by the extraordinary mode in the presence of the cyclotron cutoff is interpreted to be achieved by the penetration of scattered waves from high and low field sides, because the wave polarization is scrambled by the reflection at the chamber wall.
- Publication:
-
Unknown
- Pub Date:
- March 1982
- Bibcode:
- 1982echs.rept.....O
- Keywords:
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- Electron Cyclotron Heating;
- Plasma Heating;
- Radio Frequency Heating;
- Stellarators;
- Electron Density (Concentration);
- Microwave Scattering;
- Microwaves;
- Polarization (Waves);
- Reactor Materials;
- Plasma Physics