Absorption of fast waves by electrons on the DIII-D tokamak

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...

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Bibliographic Details
Published in:Physical review letters 1992-07, Vol.69 (2), p.289-292
Main Authors: PETTY, C. C, PINSKER, R. I, LUCE, T. C, PRATER, R, MAYBERRY, M. J, PORKOLAB, M, BAITY, F. W, BONOLI, P. T, CHIU, S. C, DE HAAS, J. C. M, GOULDING, R. H, HOFFMAN, D. J
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700350 - Plasma Production, Heating, Current Drive, & Interactions- (1992-)
ABSORPTION
CLOSED PLASMA DEVICES
CONFINEMENT
DATA
DIVERTORS
EFFICIENCY
ELECTRIC HEATING
ELECTRON TEMPERATURE
ENERGY ABSORPTION
Exact sciences and technology
EXPERIMENTAL DATA
H-MODE PLASMA CONFINEMENT
HEATING
INFORMATION
JOULE HEATING
NUMERICAL DATA
Physics
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
PLASMA CONFINEMENT
PLASMA HEATING
Plasma production and heating
RESISTANCE HEATING
SHOCK WAVES
SORPTION
THERMONUCLEAR DEVICES
TIMING PROPERTIES
TOKAMAK DEVICES
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Summary: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. {ital H}-mode plasmas were obtained with fast-wave heating alone for the first time in the direct electron heating regime.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.69.289