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Steady-state sustainment of divertor detachment with multi-species impurity seeding in LHD
http://hdl.handle.net/10655/00012670
http://hdl.handle.net/10655/00012670509b6edf-1059-4a04-99c3-ad5cd47a4672
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
Nucl.Fusion61_pp126018 (6.5 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2021-11-04 | |||||
| タイトル | ||||||
| タイトル | Steady-state sustainment of divertor detachment with multi-species impurity seeding in LHD | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | detachment | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | divertor | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | impurity seeding | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | LHD | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 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× MASUZAKI, Suguru× Hayashi, Yuki× OISHI, Tetsutaro× SUZUKI, Chihiro× KOBAYASHI, Masahiro× TOKUZAWA, Tokihiko× TANAKA, Hirohiko× TANAKA, Kenji× KINOSHITA, Toshiki× SAKAI, Hikona× PETERSON, Byron |
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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 | Multi-species impurity seeding is an advanced operation scenario to mitigate the divertor heat load for the realization of future fusion reactors. In the large helical device, divertor detachment is successfully sustained using higher-Z (krypton, Kr) and lower-Z (neon, Ne) superimposed seeding. Emission from Kr impurities is drastically enhanced if it is followed by Ne seeding. Plasma radiation can be enhanced even at the upstream region in the edge plasma compared with Ne only seeded plasmas with suppression of impurity accumulation toward the central plasma. The characteristics of divertor heat load reduction and energy confinement are comparable between the Kr + Ne seeding and Ne only seeding under the same radiation fraction. However, while the detachment in Ne only seeding is transient, the detachment in Kr + Ne seeding is stable. It indicates that multi-species impurity seeding can be competitive for steady-state operation although further investigation is desired about the balance between divertor heat load reduction, impurity screening, and confinement degradation. The Kr emission enhancement is strongly affected by electron density and temperature at the last closed flux surface resulting in impurity penetration. | |||||
| 書誌情報 |
Nuclear Fusion 巻 61, 号 12, p. 126018, 発行日 2021-10-25 |
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| 出版者 | ||||||
| 出版者 | IOP Publishing | |||||
| 出版者 | ||||||
| 出版者 | International Atomic Energy Agency | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | AA00759871 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA00759871 | |||||
| DOI | ||||||
| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1088/1741-4326/ac2bbc | |||||
| 権利 | ||||||
| 権利情報 | This is the Accepted Manuscript version of an article accepted for publication in Nuclear Fusion. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.1088/1741-4326/ac2bbc. | |||||
| 権利 | ||||||
| 権利情報 | (c) 2021 IAEA, Vienna | |||||
| 情報源 | ||||||
| 関連名称 | Citation Kiyofumi Mukai et al 2021 Nucl. Fusion 61 126018 | |||||
| 関連サイト | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1088/1741-4326/ac2bbc | |||||
| 関連名称 | Publisher version | |||||
| 著者版フラグ | ||||||
| 出版タイプ | AM | |||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
| NAIS | ||||||
| 値 | ||| | |||||
