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

Journal Article · Mon Jan 01 00:00:00 EST 1996 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.76.632· OSTI ID:278793

Hogeweij, G M; Oomens, A A; Barth, C J; Beurskens, M N; Chu, C C; van Gelder, J F; Lok, J; Lopes Cardozo, N J; Pijper, F J; Polman, R W; Rommers, J H ^[1]

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1. FOM Instituut voor Plasmafysica Rijnhuizen, Associatie EURATOM-FOM, P.O.Box 1207, 3430 BE Nieuwegein (The Netherlands)

In the Rijnhuizen Tokamak Project steady-state hollow electron temperature ({ital T}{sub {ital e}}) profiles have been sustained with strong off-axis electron cyclotron heating, creating a region of reversed magnetic shear. In this region the effective electron thermal diffusivity ({chi}{sub {ital e}}{sup {ital pb}}) is close to neoclassical in high density plasmas. For medium density, {chi}{sub {ital e}}{sup {ital 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 {ital T}{sub {ital e}} gradient. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 278793
• Journal Information: Physical Review Letters, Vol. 76, Issue 4; Other Information: PBD: Jan 1996
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION
PLASMA
ELECTRON TEMPERATURE
BEAM PROFILES
DENSITY
ELECTRON CYCLOTRON-RESONANCE
ELECTRON DENSITY
TEMPERATURE GRADIENTS
THERMAL DIFFUSIVITY
TOKAMAK DEVICES