Journal Article

PreJuSER-45011

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Evidence for high-m secondary islands induced by large low-m islands in a tokamak plasma

Donné, A. J. H. ; van Gorkom, J. C. ; Udintsev, V. S. ; Domier, C. W. j. ; Krämer-Flecken, A.FZJ* ; Luhmann, N. C. ; Schüller, F. C. ; TEXTOR, T.FZJ*

2005
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/1855  doi:10.1103/PhysRevLett.94.085001

Abstract: Small-scale structures with high poloidal mode numbers (m=10-20) have been observed in the TEXTOR tokamak plasma with pulsed radar reflectometry and an electron cyclotron emission diagnostic, in conjunction with large 2/1 and 1/1 islands. The small islands have a peaked density profile, similar to that of the simultaneously observed large-scale 2/1 islands. This together with the observation that high-frequency density and temperature fluctuations are very pronounced near the X points of the large islands hints to a strongly perturbed magnetic topology around the X points.

Keyword(s): J

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Institut für Plasmaphysik (IPP)

Research Program(s):

1. Kernfusion und Plasmaforschung (E05)

Appears in the scientific report 2005
Notes: This version is available at the following Publisher URL: http://prl.aps.org

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