Experimental measurement of electron particle diffusion from sawtooth-induced density-pulse propagation in the Texas Experimental Tokamak
- 15 February 1988
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 60 (7) , 577-580
- https://doi.org/10.1103/physrevlett.60.577
Abstract
Electron density perturbations produced by sawtooth oscillations in the interior of the Texas Experimental Tokamak are measured with a high-resolution, multichannel, far-infrared interferometer. Abel inversion over the sawtooth perturbation indicates a space-time evolution which is diffusive in character. The diffusion coefficient is determined from a density-pulse–propagation model and found to be appreciably larger than equilibrium values.Keywords
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