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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.

Additional information

Authors: RYTER F, Max-Planck-Institut fur Plasmaphysik, IPP-EURATOM Association, Garching (DE);SUTTROP W, Max-Planck-Institut fur Plasmaphysik, IPP-EURATOM Association, Garching (DE);TARDINI G, Max-Planck-Institut fur Plasmaphysik, IPP-EURATOM Association, Garching (DE);ANGIONI C, Ecole Polytechnique de Lausanne (CH);BEURSKENS M, FOM Institut voor Plasmafysica 'Rijn huizen', Nieuwegein (NL);HOGEWEIJ G D M, FOM Institut voor Plasmafysica 'Rijn huizen', Nieuwegein (NL);CIRANT S, Istituto di Fisica dei Plasma, Milano (IT);JACCHIA A, Istituto di Fisica dei Plasma, Milano (IT);MANTICA P, Istituto di Fisica dei Plasma, Milano (IT);HOANG G T, CEA, CEN Cadarache, Saint-Paul-lez-Durance (FR);IMBEAUX F, CEA, CEN Cadarache, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: An article published in:Plasma Physics and Controlled Fusion, 43 (12A), (2001) pp. A323-A338
Record Number: 200214312 / Last updated on: 2002-02-04
Category: PUBLICATION
Original language: en
Available languages: en
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