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On measuring the electron heat diffusion coefficient in atokamak from sawtooth oscillation observations

M. Soler, J.D. Callen1979年被引用 88Nuclear FusionIF 3出版社

A number of new methods are discussed for determining the electron heat conduction coefficient χe 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 χe and the radial dependence of χe are found to be consistent with and more precise than the χe(r) determined by conventionally analysing 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.

日本語訳

内部擾乱によって誘起された温度摂動の時空間発展の実験的観測から、トカマクにおける電子熱伝導係数χeを決定するためのいくつかの新しい方法について論じる。オークリッジ・トカマク(ORMAK)において、χeの様々な平均値およびχeの動径依存性は、電子パワーバランス方程式を従来通りに解析して求められたχe(r)と整合的であり、かつそれよりも精密であることが見出された。これらの測定の最終的な結果は、トカマクにおける支配的な電子径方向熱輸送機構が微視的な拡散過程であることを決定的に証明するものである。

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Sawtooth oscillation
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