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In this paper a parametric experimental study of fluctuations has been performed in L mode plasmas during steady-state phases in Tore Supra. Simultaneous measurements of density and magnetic fluctuations in the gradient region of the discharge show that both components are strong functions of the local electron temperature decreasing lengths. The heat flux ratio advected by electrostatic eddies in the bulk of the discharge, is estimated using fluctuation measurements and generic predictions for the parametric dependency of the thermal flux. The calculated level of density fluctuation necessary to account for heat transport at mid radius is found to be compatible with values measured in other tokamaks.

Additional information

Authors: DEVYNCK P ET AL, CEA, CEN Cadarache, Saint-Paul-lez-Durance (FR);TRUC A ET AL, Ecole Polytechnique, Laboratoire de Physique des milieux ionisés, Palaiseau (FR)
Bibliographic Reference: Report: EN (1997) 29pp.
Availability: Available from Association Euratom-CEA, CEN Cadarache, 13108 Saint-Paul-lez-Durance (FR)
Record Number: 199710648 / Last updated on: 1997-06-09
Original language: en
Available languages: en
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