The impact of a biasing radial electric field on the scrape-off layer in a divertor tokamak

Journal Article · Mon Aug 01 04:00:00 EDT 1994 · Physics of Plasmas; (United States)

DOI:https://doi.org/10.1063/1.870598· OSTI ID:6691949

Rozhansky, V; Tendler, M ^[1]

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1. The Alfven Laboratory, Fusion Plasma Physics, Royal Institute of Technology, Stockholm (Sweden)

The issue of transport on open field lines is addressed using a fluid approach invoking anomalous inertia and viscosity. The emphasis of the model is on the transport of the toroidal momentum, which is notoriously anomalous. The model suggests that tokamaks with divertors may benefit from a significant amplification of the electric field. It is shown that biasing of the scrape-off layer (SOL) with respect to the grounded first wall results in fundamental phenomena, affecting the performance of a divertor. The theoretical model appears to be consistent with experimental results obtained on Tokamak de Varennes [Phys. Plasmas [bold 1], 1485 (1994)].

• OSTI ID: 6691949
• Journal Information: Physics of Plasmas; (United States), Journal Name: Physics of Plasmas; (United States) Vol. 1:8; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700350* -- Plasma Production
Heating
Current Drive
& Interactions-- (1992-)
BOUNDARY LAYERS
CLOSED PLASMA DEVICES
DIVERTORS
ELECTRIC FIELDS
IMPURITIES
LAYERS
PLASMA DENSITY
PLASMA IMPURITIES
PLASMA SCRAPE-OFF LAYER
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
TRANSPORT THEORY
WALL EFFECTS