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Observation of visible forbidden lines of tungsten highly charged ions in LHD core plasmas and its application to ion distribution analysis
http://hdl.handle.net/10655/00012640
http://hdl.handle.net/10655/00012640bf98de78-942f-4070-a268-307d4039a0ea
名前 / ファイル | ライセンス | アクション |
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Proc.26th.IAEA.EX:P8-14 (971.1 kB)
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Item type | 会議発表論文 / Conference Paper(1) | |||||
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公開日 | 2021-09-14 | |||||
タイトル | ||||||
タイトル | Observation of visible forbidden lines of tungsten highly charged ions in LHD core plasmas and its application to ion distribution analysis | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_5794 | |||||
資源タイプ | conference paper | |||||
著者 |
KATO, Daiji
× KATO, Daiji× SAKAUE, Hiroyuki A.× MURAKAMI, Izumi× GOTO, Motoshi× OISHI, Tetsutaro× Fujii, K.× Nakamura, N.× MORITA, Shigeru |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Visible emission lines of tungsten ions are useful for analysis of tungsten ion distributions at ITER because the radiation shielding of detectors is not basically necessary by using optical fibers. Here we report the result on observation of visible magnetic-dipole (M1) lines of highly-charged tungsten ions in the Large Helical Device (LHD) by tungsten pellet injection and its first application to the ion distribution analysis. Based on the measured spatial profile of an M1 line intensity of W27+, tungsten ion distributions in LHD core plasmas are quantitatively analyzed using a collisional-radiative model. Strong enhancement of the M1 line intensity due to proton collisions is predicted by the present calculation. Poloidal asymmetry of the tungsten density distribution in the core plasma is inferred from the present analysis. Peak tungsten concentration at the plasma center is evaluated to be as high as 10-2. Tungsten diffusion from the core plasma is observed in time variation of the deduced density profiles. | |||||
書誌情報 |
Preprint of 26th IAEA Fusion Energy Conference (17-22 Oct., 2016, Kyoto, Japan) p. EX/P8-14, 発行日 2016-10-21 |
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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 |