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The two-dimensional electron temperature distribution in the ergodic layer is successfully measured using the line intensity ratio of Li-like NeVIII 2s-3p (2S1/2-2P3/2: 88.09 Å, 2S1/2-2P1/2: 88.13 Å) to 2p-3s (2P1/2-2S1/2: 102.91 Å, 2P3/2-2S1/2: 103.09 Å) transitions emitted from radial location near Last Closed Flux Surface (LCFS). The intensity ratio analyzed with ADAS code shows no dependence on the electron density below 1014 cm−3. The result indicates a little higher temperature, i.e., 220 eV, in the poloidal location at high-field side near helical coils called O-point compared to the temperature near X-point, i.e., 170 eV. The electron temperature profile is also measured at the edge boundary of ergodic layer using the line intensity ratio of Li-like CIV 2p-3d (2P1/2-2D3/2: 384.03 Å, 2P3/2-2D5/2: 384.18 Å) to 2p-3s (2P1/2-2S1/2: 419.53 Å, 2P3/2-2S1/2: 419.71 Å) transitions. 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Two-Dimensional Distribution of Electron Temperature in Ergodic Layer of LHD Measured from Line Intensity Ratio of CIV and NeVIII
http://hdl.handle.net/10655/00013444
http://hdl.handle.net/10655/0001344483b2fe1d-b073-4d29-9c9b-590971566449
名前 / ファイル | ライセンス | アクション |
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7838_PFR (1.4 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2022-08-05 | |||||
タイトル | ||||||
タイトル | Two-Dimensional Distribution of Electron Temperature in Ergodic Layer of LHD Measured from Line Intensity Ratio of CIV and NeVIII | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | line intensity ratio | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | electron temperature | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Li-like CIV and NeVIII | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | EUV spectrometer | |||||
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 |
WANG, Erhui
× WANG, Erhui× MORITA, Shigeru× DONG, Chunfeng× GOTO, Motoshi× MURAKAMI, Izumi× OISHI, Tetsutarou |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Two-dimensional distribution of impurity lines emitted from ergodic layer with stochastic magnetic field lines in Large Helical Device (LHD) has been observed using a space-resolved extreme ultraviolet (EUV) spectrometer. The two-dimensional electron temperature distribution in the ergodic layer is successfully measured using the line intensity ratio of Li-like NeVIII 2s-3p (2S1/2-2P3/2: 88.09 Å, 2S1/2-2P1/2: 88.13 Å) to 2p-3s (2P1/2-2S1/2: 102.91 Å, 2P3/2-2S1/2: 103.09 Å) transitions emitted from radial location near Last Closed Flux Surface (LCFS). The intensity ratio analyzed with ADAS code shows no dependence on the electron density below 1014 cm−3. The result indicates a little higher temperature, i.e., 220 eV, in the poloidal location at high-field side near helical coils called O-point compared to the temperature near X-point, i.e., 170 eV. The electron temperature profile is also measured at the edge boundary of ergodic layer using the line intensity ratio of Li-like CIV 2p-3d (2P1/2-2D3/2: 384.03 Å, 2P3/2-2D5/2: 384.18 Å) to 2p-3s (2P1/2-2S1/2: 419.53 Å, 2P3/2-2S1/2: 419.71 Å) transitions. The intensity ratios analyzed with CHIANTI, ADAS and T.Kawachi codes show a slightly higher temperature near O-point, i.e., 25 eV for CHIANTI, 21 eV for ADAS and 11 eV for T.Kawachi's codes, compared to the temperature at X-point, i.e., 15 - 21 eV for CHIANTI, 9 - 15 eV for ADAS and 6 - 9 eV for T.Kawachi codes. It suggests that the transport coefficient in the ergodic layer is varied with three-dimensional structure. | |||||
書誌情報 |
Plasma and Fusion Research 巻 8, 号 Special Issue 1, p. 2402176, 発行日 2013-12-27 |
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書誌的事項 | ||||||
the 22nd International Toki Conference on Cross-Validation of Experiment and Modeling for Fusion and Astrophysical Plasmas | ||||||
出版者 | ||||||
出版者 | The Japan Society of Plasma Science and Nuclear Fusion Research | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1880-6821 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA12346675 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1585/pfr.8.2402176 | |||||
権利 | ||||||
権利情報 | (c) 2013 The Japan Society of Plasma Science and Nuclear Fusion Research | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | http://doi.org/10.1585/pfr.8.2402176 | |||||
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 | ||||||
7838 |