Phys. Rev. Lett. 38, 491–494 (1977)Experimental Measurement of Electron Heat Diffusivity in a TokamakReceived 14 October 1976; published in the issue dated 28 February 1977 Electron temperature perturbations produced by internal disruptions in the center of the Oak Ridge Tokamak (ORMAK) are followed with a multichord soft-x-ray detector array. The space-time evolution is found to be diffusive in character, but the conduction coefficient determined from a heat-pulse-propagation model is larger by a factor of 2.5-15 than that implied by the measured gross energy-containment time. © 1977 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.38.491
DOI:
10.1103/PhysRevLett.38.491
PACS:
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