Evidence of suppression of ITG-instability in the radiatively improved mode in TEXTOR-94

TitleEvidence of suppression of ITG-instability in the radiatively improved mode in TEXTOR-94
Publication TypeJournal Article
Year of Publication1999
AuthorsM.Z Tokar, R. Jaspers, R.R Weynants, H.R Koslowski, A. Kramer-Flecken, A.M Messiaen, J. Ongena, B. Unterberg
JournalPlasma Physics and Controlled Fusion
Volume41
Number3
PaginationL9-L15
Date PublishedMar
ISBN Number0741-3335
Abstract

Characteristics of the toroidal ITG-instability are analysed for conditions of the L-mode and the radiatively improved (RI) mode triggered in TEXTOR-94 by puffing of neon. Analysis is performed for experimentally measured profiles of the plasma parameters and densities of impurity species. It is shown that in the Pi-mode the anomalous transport induced by this kind of instability is reduced significantly in a large part of the plasma volume. This is an important channel of the energy confinement improvement. The role of the radial electric field is envisaged.

DOI10.1088/0741-3335/41/3/001
PID

ac767b5ef95307e83f7e8e29938e30e0

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