Formation of convective cells during scrape-off layer biasing in the CASTOR tokamak

J. Stockel, P. Devynck, J. Gunn, E. Martines, G. Bonhomme, I. Voitsekhovitch, G. Van Oost, M. Hron, I. Duran, P. Stejskal, J. Adamek, V. Weinzettl, F. Zacek

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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.
Original languageEnglish
Pages (from-to)635 - 643
Number of pages9
JournalPlasma Physics and Controlled Fusion
Volume47
Issue number4
DOIs
Publication statusPublished - Apr 2005
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering
  • Condensed Matter Physics

Cite this

Stockel, J., Devynck, P., Gunn, J., Martines, E., Bonhomme, G., Voitsekhovitch, I., ... Zacek, F. (2005). Formation of convective cells during scrape-off layer biasing in the CASTOR tokamak. Plasma Physics and Controlled Fusion, 47(4), 635 - 643. https://doi.org/10.1088/0741-3335/47/4/004