Absorption of fast waves by electrons on the DIII-D tokamak
- 13 July 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 69 (2) , 289-292
- https://doi.org/10.1103/physrevlett.69.289
Abstract
Efficient direct heating of electrons by fast waves has been observed on the DIII-D tokamak. The measured fast-wave heating efficiency was independent of magnetic field, in contrast to the strong inverse magnetic field scaling predicted by the theory of single-pass damping, indicating multiple-pass absorption. The central heating of electrons by the fast waves had a strong dependence on the target eelctron temperature. H-mode plasmas were obtained with fast-wave heating alone for the first time in the direct electron heating regime.Keywords
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