Measuring the electron heat diffusion coefficient in a tokamak from Sawtooth oscillation observations

Technical Report · Wed Feb 01 00:00:00 EST 1978

DOI:https://doi.org/10.2172/5107716· OSTI ID:5107716

Soler, M.; Callen, J. D.

A number of new methods are discussed for determining the electron heat conduction coefficient chi/sub e/ in a tokamak from the experimental observation of the space-time evolution of the temperature perturbations induced by internal disruptions. In the Oak Ridge Tokamak (ORMAK) the various average values of chi/sub e/ and the radial dependence of chi/sub e/ are found to be consistent with and more precise than the chi/sub e/ (r) determined by conventionally analyzing the electron power balance equation. The net result of these measurements is to conclusively prove that the dominant, radial electron heat transport mechanism in tokamaks is a microscopic, diffusive process.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5107716
• Report Number(s): ORNL/TM-6165; TRN: 78-008863
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ORMAK DEVICES
ELECTRON TEMPERATURE
PLASMA HEATING
DISTURBANCES
ELECTRON LOSS
PLASMA INSTABILITY
TEMPERATURE DEPENDENCE
TEMPERATURE MEASUREMENT
THERMAL DIFFUSION
TOKAMAK TYPE REACTORS
CLOSED PLASMA DEVICES
HEATING
INSTABILITY
THERMONUCLEAR DEVICES
THERMONUCLEAR REACTORS
TOKAMAK DEVICES
700105* - Fusion Energy- Plasma Research- Plasma Kinetics-Theoretical- (-1987)