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Abstract

Tore Supra electron thermal fluxes, analysed over a range of heating powers and plasma densities, are shown to vary parametrically according to the small-scale electron temperature gradient -ETG! Model, rather than the ion inertial scale electrostatic gyro-Bohm model. Steady-state power balance analysis and time-varying interpretative transport simulations, performed on the Tore Supra Fast Wave Electron Heating database, validate the ETG thermal flux-versus-gradient relation and the existence of a critical electron temperature gradient. The critical gradient length R/L(c) and the parametric dependence of the thermal flux, q(e)(n(e) ,T(e) ,Delta T(e) ,q,s), agree well with the ETG model.

Additional information

Authors: HORTON W, Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas (US);HOANG G T, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);BOURDELLE C, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);GARBET X, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);OTTAVIANI M, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);COLAS L, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: An article published in: Physics of Plasmas, Volume 11, Number 5, May 2004
Availability: This article can be accessed online by subscribers, and can be ordered online by non-subscribers, at: http://www.pppl.gov/physplas/
Record Number: 200417506 / Last updated on: 2004-05-10
Category: PUBLICATION
Original language: en
Available languages: en