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Three-dimensional structure of radiative cooling in impurity seeded plasmas in the Large Helical Device
http://hdl.handle.net/10655/00013518
http://hdl.handle.net/10655/00013518c80f4acf-59f8-497b-928c-1104ec529229
名前 / ファイル | ライセンス | アクション |
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13269_Nucl.Mat.Eng (8.7 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2022-11-15 | |||||
タイトル | ||||||
タイトル | Three-dimensional structure of radiative cooling in impurity seeded plasmas in the Large Helical Device | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | IRVB | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Imaging bolometer | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | PCA Detachment | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | EMC3-EIRENE | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | LHD | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
MUKAI, Kiyofumi
× MUKAI, Kiyofumi× KAWAMURA, Gakushi× MASUZAKI, Suguru× HAYASHI, Yuki× TANAKA, Hirohiko× PETERSON, Byron× OISHI, Tetsutarou× SUZUKI, Chihiro× KOBAYASHI, Masahiro× MUNECHIKA, Koyo |
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著者ID | ||||||
内容記述タイプ | Other | |||||
内容記述 | 0000-0003-1586-1084 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Three-dimensionally localization of radiative cooling due to nitrogen (N2) seeding for divertor detachment was detected experimentally. Since the localization along some magnetic field lines induces toroidal asymmetry of heat load reduction on divertor plates, it should be avoided for fusion reactors. The three-dimensionally localized structure was extracted using Principal Component Analysis (PCA) from two-dimensional radiation images measured with an InfraRed imaging Video Bolometer (IRVB). By applying PCA to 34 images each in N2 seeded plasmas with toroidally-asymmetric heat load reduction and in neon (Ne) seeded plasmas with toroidally-symmetric heat load reduction, a radiation feature in N2 seeded plasmas was found as one of the principal components (PC). The three-dimensional transport code EMC3-EIRENE indicated that the ionization in one of the divertor legs is enhanced in nitrogen seeding compared with Ne seeding due to the difference in the first ionization energy. The magnetic field lines from the divertor leg were along the extracted radiation structure and were terminated by the divertor where the heat load decreased due to the N2 seeding. These results indicate that three-dimensionally localized structure of radiative cooling was detected experimentally. | |||||
書誌情報 |
Nuclear Materials and Energy 巻 33, 号 October 2022, p. 101294, 発行日 2022-11-03 |
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出版者 | ||||||
出版者 | Elsevier | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2352-1791 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1016/j.nme.2022.101294 | |||||
権利 | ||||||
権利情報 | © 2022 The Author(s). Published by Elsevier Ltd. | |||||
権利 | ||||||
権利情報 | This article is available under the Creative Commons CC-BY-NC-ND license and permits non-commercial use of the work as published, without adaptation or alteration provided the work is fully attributed. | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1016/j.nme.2022.101294 | |||||
関連名称 | Publisher version | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
NAIS | ||||||
13269 |