Heat convection and transport barriers in low-magnetic-shear Rijnhuizen Tokamak Project plasmas

TitleHeat convection and transport barriers in low-magnetic-shear Rijnhuizen Tokamak Project plasmas
Publication TypeJournal Article
Year of Publication2000
AuthorsP. Mantica, G. Gorini, G.MD Hogeweij, N.JL Cardozo, A.M.R. Schilham
JournalPhysical Review Letters
Volume85
Number21
Pagination4534-4537
Date PublishedNov 20
ISBN Number0031-9007
Abstract

Layers of reduced electron heat transport ("transport barriers") have been observed in the Rijnhuizen Tokamak Project when the plasma is dominantly heated by electron cyclotron heating (ECH). Experiments into the properties of the transport barriers are reported. Modulation of the ECH power was used to probe electron heat transport in the barriers by means of propagating electron temperature perturbations. The observed propagation shows that transport inside the barriers is dominated by heat convection. This convection is inward, i.e., up the temperature gradient.

DOI10.1103/PhysRevLett.85.4534
PID

18eb8b27d593f084fa32f159c98bcb9d

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