We describe experiments with a biased electrode inserted into the scrape-off layer (SOL) of the CASTOR tokamak. The resulting radial and poloidal electric field and plasma density modification are measured by means of Langmuir probe arrays with high temporal and spatial resolutions. Poloidally and radially localized stationary structures of the electric field (convective cells) are identified and a related significant modification of the particle transport in the SOL is observed. © 2005 IOP Publishing Ltd.
Stockel, J., Devynck, P., Gunn, J., Martines, E., Bonhomme, G., Voitsekhovitch, I., et al. (2005). Formation of convective cells during scrape-off layer biasing in the CASTOR tokamak. PLASMA PHYSICS AND CONTROLLED FUSION, 47(4), 635-643 [10.1088/0741-3335/47/4/004].
Formation of convective cells during scrape-off layer biasing in the CASTOR tokamak
Martines E;
2005
Abstract
We describe experiments with a biased electrode inserted into the scrape-off layer (SOL) of the CASTOR tokamak. The resulting radial and poloidal electric field and plasma density modification are measured by means of Langmuir probe arrays with high temporal and spatial resolutions. Poloidally and radially localized stationary structures of the electric field (convective cells) are identified and a related significant modification of the particle transport in the SOL is observed. © 2005 IOP Publishing Ltd.
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