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A Role of Neutral Hydrogen in CHS Plasmas with Reheat and Collapse and Comparison with JIPP T-IIU Tokamak Plasmas
http://hdl.handle.net/10655/2409
http://hdl.handle.net/10655/2409ffa91762-c4cc-4ddd-8dfa-f9c7a61cf9d6
名前 / ファイル | ライセンス | アクション |
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NIFS-186.pdf (555.0 kB)
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Item type | 研究報告書 / Research Paper(1) | |||||
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公開日 | 2010-02-05 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | A Role of Neutral Hydrogen in CHS Plasmas with Reheat and Collapse and Comparison with JIPP T-IIU Tokamak Plasmas | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | CHS | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | JIPPT-IIU | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | neutral hydrogen | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | collapse | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | confinement improvement | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | IOC-mode | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | H-mode | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | density peaking | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | impurity accumulation | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_18ws | |||||
資源タイプ | research report | |||||
著者 |
Morita, S.
× Morita, S.× Yamada, H.× Iguchi, H.× Adati, K.× Akiyama, R.× Arimoto, H.× Fujiwara, M.× Hamada, Y.× Ida, K.× Idei, H.× Kaneko, O.× Kawahata, K.× Kawamoto, T.× Kubo, S.× Kumazawa, R.× Matsuoka, K.× Morisaki, T.× Nishimura, K.× Okamura, S.× Ozaki, T.× Seki, T.× Sakurai, M.× Sakakibara, S.× Sagara, A.× Takahashi, C.× Takeiri, Y.× Takenaga, H.× Takita, Y.× Toi, K.× Tsumori, K.× Uchino, K.× Ueda, M.× Watari, T.× Yamada, I. |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Results are described on NBI plasmas of the Compact Helical System (CHS). An increase in the stored energy, which is called plasma 'reheat', is observed with density peaking when gas puffing is turned off in the high density region. A plasma collapse with large increase in radiation loss occurs even in discharges whose Z_eff values (typically, less than 2-3) do not show any increase when the gas puffing is continued. Both phenomena are basically explained by the edge electron temperature due to the difference in the amount of edge hydrogen neutrals. After turning off the gas puffing, the central electron density n_e0 shows an increase of 80% and the density peaking factor (n_e0 / bar{n}_e) changes from 1.0 to 2.0, in typical cases, and a high inward velocity of the impurities appears (v = 20 m/s). The accumulation is studied in relation to the poloidal rotation and the edge temperature. These results are compared with results from plasmas with IOC- and H-modes in the JIPPT-IIU tokamak. | |||||
書誌情報 |
en : Research Report NIFS-Series 発行日 1992-09-01 |
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報告書番号 | ||||||
NIFS-186 | ||||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0915-633X |