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VUV spectroscopic study of a localized impurity source in Tore Supra ergodic divertor plasmas

C De Michelis, J Hogan, P Monier-Garbet, M Becoulet, R Guirlet, W Hess, B Schunke, J C Vallet2002年Plasma Physics and Controlled FusionIF 2.2出版社

A spectroscopic study of VUV emission from injected and intrinsic low-Z impurities has been carried out for Tore Supra ergodic divertor (ED) plasmas. Analysis of plasmas in which a nearby limiter effectively provides a spatially localized source of recycled impurities provides information illuminating the dynamical processes of impurity penetration in ED plasmas. The profile evolution behaviour is found to be consistent with an interpretation which identifies both ED-influenced edge confinement and scrape-off layer and edge phenomena provided by the localized source. Preferentially increased edge impurity transport is a beneficial aspect of the ED.

日本語訳

Tore Supraエルゴディックダイバータ(ED)プラズマにおいて、注入および自然発生の低Z不純物からのVUV発光の分光学的研究を実施した。近傍のリミターが空間的に局在した不純物源を効果的に提供するプラズマの解析により、EDプラズマにおける不純物浸透の動的過程を解明する情報が得られた。プロファイルの時間発展は、EDの影響を受けた周辺閉じ込めと、局在源によって提供されるスクレイプオフ層および周辺部の現象の両方を特定する解釈と一致することが見出された。優先的に増大した周辺不純物輸送は、EDの有益な特性である。

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DivertorImpurityTore SupraDivertor plasmaErgodic divertor
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