Experimental studies of electron transport
- 26 November 2001
- journal article
- Published by IOP Publishing in Plasma Physics and Controlled Fusion
- Vol. 43 (12A) , A323-A338
- https://doi.org/10.1088/0741-3335/43/12a/325
Abstract
Electron transport in tokamaks has many different features which are briefly reviewed. The paper is focused on electron heat transport in conventional tokamak plasmas. An inter-machine comparison indicates that the non-dimensional gradient length of the electron temperature profiles R/LTe is almost independent of the devices and varies little with plasma parameters. This strongly suggests that electron heat transport is governed by turbulence with a threshold in R/LTe . This is confirmed by modulation experiments using electron cyclotron heating. Simulations with empirical and physics-based transport models confirm this assumption.Keywords
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