Enhanced Turbulence During the Energy Quench of Disruptions

TitleEnhanced Turbulence During the Energy Quench of Disruptions
Publication TypeJournal Article
Year of Publication1991
AuthorsG.JJ Remkes, F.C Schüller
JournalPlasma Physics and Controlled Fusion
Date PublishedMar
ISBN Number0741-3335

Enhanced electron density fluctuation levels with frequencies in the megahertz range have been observed during the energy quench phase of minor disruptions in the TORTUR Tokamak. The high frequencies of the phenomena indicate that the enhanced transport during the energy quench is caused by turbulence, and not by the coherent low mode number MHD modes themselves, which initiate the disruptions. Both the growth rate and wavelength of the fluctuations increase to such a level that a corresponding diffusivity would increase by two orders of magnitude. This is in good agreement with the observed temperature redistribution.



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