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Interchange turbulence in the TCV scrape-off layer

O E Garcia, J Horacek, R A Pitts, A H Nielsen, W Fundamenski, J P Graves, V Naulin, J Juul Rasmussen2006年Plasma Physics and Controlled FusionIF 2.2出版社

Probe measurements of electrostatic plasma fluctuations in the scrape-off layer (SOL) of the TCV tokamak are compared with the results from two-dimensional interchange turbulence simulations. Excellent agreement is found for both the radial variation of statistical moments and temporal correlations, clearly indicating that turbulent transport in the tokamak SOL is due to radial advection of blob-like filamentary structures. This offers an explanation both for the basic mechanism driving the anomalous SOL particle transport and the now commonly observed broad particle density profiles, extending deep into the SOL and thought to be the cause of high levels of main chamber plasma-wall interactions.

日本語訳

トカマク周辺領域(SOL)における静電プラズマ揺動のプローブ測定を、二次元乱流シミュレーションの結果と比較した。統計モーメントの径方向変化と時間相関の両方において優れた一致が見られ、トカマクSOLにおける乱流輸送がブロブ状フィラメント構造の径方向対流によるものであることを明確に示している。これは、異常なSOL粒子輸送の基本的なメカニズムと、現在広く観測されている、主チャンバー壁との高いレベルのプラズマ・壁相互作用の原因と考えられるSOLの深部まで及ぶ広い粒子密度分布の両方に対する説明を与えるものである。

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Scrape-off layerTCV
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