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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 Stejskal2005年Plasma Physics and Controlled FusionIF 2.2出版社

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.

日本語訳

我々は、CASTORトカマクのスクレイプオフ層(SOL)に挿入されたバイアス電極を用いた実験について述べる。その結果生じる径方向およびポロイダル方向の電場とプラズマ密度の変化を、高い時間分解能および空間分解能を有するラングミュアプローブアレイによって測定した。ポロイダル方向および径方向に局在した定常的な電場構造(対流セル)が同定され、それに伴うSOLにおける粒子輸送の顕著な変化が観測された。

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Scrape-off layer
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