Impurity Retention Effect in the Edge Ergodic Layer of the Large Helical Device
スポンサーリンク
概要
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The impurity transport characteristics in the ergodic layer of the Large Helical Device (LHD) are analyzed using the 3D edge transport code (EMC3-EIRENE), in comparison with the experimental data. The 3D modeling predicts the impurity retention (screening) in the ergodic layer at the high-density plasma. It is found that the edge surface layer plays an important role in impurity retention, where the friction force significantly dominates over the thermal force. The line intensity measurements of CIII to CVI show consistent behavior with the modeling, indicating impurity retention in the ergodic layer. The applicability of the model for high-Z impurity is also discussed, and it is found that the experimental data is consistent with the results of edge transport modeling.
著者
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OHYABU Nobuyoshi
National Insitute for Fusion Science
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KOMORI Akio
National Insitute for Fusion Science
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YAMADA Hiroshi
National Insitute for Fusion Science
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GOTO Motoshi
National Insitute for Fusion Science
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MASUZAKI Suguru
National Insitute for Fusion Science
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MORISAKI Tomohiro
National Insitute for Fusion Science
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NAKAMURA Yukio
National Insitute for Fusion Science
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NARIHARA Kazumichi
National Insitute for Fusion Science
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SHOJI Mamoru
National Insitute for Fusion Science
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YAMADA Ichihiro
National Insitute for Fusion Science
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MOTOJIMA Osamu
National Insitute for Fusion Science
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KOBAYASHI Masahiro
National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
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ASHIKAWA Naoko
National Institute for Fusion Science
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MORITA Sigeru
National Institute for Fusion Science
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Sato Kuninori
National Insititute for Fusion Science
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TOKITANI Masayuki
National Institute for Fusion Science, Toki 509-5292 Japan
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OHYABU Nobuyoshi
National Institute for Fusion Science, Toki 509-5292, Japan
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FENG Yuehe
Max-Planck-Institute fuer Plasmaphysik, Wendelsteinstrasse 1, D-17491 Greifswald, Germany
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CHOWDHURI Malay
Graduate University for Advanced Studies, Toki, Gifu 509-5292, Japan
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NARIHARA Kazumichi
National Institute for Fusion Science, Toki 509-5292, Japan
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TOKITANI Masayuki
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
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SATO Kuninori
National Institute for Fusion Science, Toki 509-5292, Japan
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YAMADA Ichihiro
National Institute for Fusion Science, Toki 509-5292, Japan
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ASHIKAWA Naoko
National Institute for Fusion Science, Toki 509-5292, Japan
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TOKITANI Masayuki
National Institute for Fusion Science
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KOBAYASHI Masahiro
National Institute for Fusion Science
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