Density profile peaking inside m/n=2/1 magnetic islands in TEXTOR-94

TitleDensity profile peaking inside m/n=2/1 magnetic islands in TEXTOR-94
Publication TypeJournal Article
Year of Publication1997
AuthorsP.C de Vries, A.JH Donne, S.H Heijnen, C.AJ Hugenholtz, A. Kramer-Flecken, F.C Schüller, G. Waidmann
JournalNuclear Fusion
Volume37
Number11
Pagination1641-1646
Date PublishedNov
ISBN Number0029-5515
Abstract

Density profile perturbations due to large rotating m/n = 2/1 magnetic islands have been studied by means of a four channel pulsed radar reflectometer in TEXTOR-94. The time of flight of the microwave pulses was strongly affected by the shallow density gradients over the magnetic islands. A detailed analysis showed the existence of secondary reflection lavers inside the magnetic island, which is an indication of a strong density peaking. This may be explained by assuming that the particle transport is reduced inside the magnetic island.

PID

b532d32d987147f4ecaba39ed17dab45

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