Steady-state hollow electron temperature profiles in the Rijnhuizen Tokamak Project

TitleSteady-state hollow electron temperature profiles in the Rijnhuizen Tokamak Project
Publication TypeJournal Article
Year of Publication1996
AuthorsG.MD Hogeweij, A.AM Oomens, C.J Barth, M.NA Beurskens, C.C. Chu, J.FM van Gelder, J. Lok, N.JL Cardozo, F.J. Pijper, R.W Polman, J.H Rommers
JournalPhysical Review Letters
Volume76
Number4
Pagination632-635
Date PublishedJan 22
ISBN Number0031-9007
Abstract

In the Rijnhuizen Tokamak Project steady-state hollow electron temperature (T-e) profiles have been sustained with strong off-axis electron cyclotron heating, creating a region of reversed magnetic shear. pb In this region the effective electron thermal diffusivity (chi e(Pb)) is close to neoclassical in high density plasmas. For medium density, chi e(Pb) is lower than neoclassical and may even be negative, indicating that off-diagonal elements in the transport matrix drive an electron heat flux up the T-e gradient.

DOI10.1103/PhysRevLett.76.632
PID

a5ec8b0adf11fd5e9be20ad8d6a619a1

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