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Transition from L Mode to High Ion Temperature Mode in CHS Heliotron/Torsatron Plasmas
http://hdl.handle.net/10655/158
http://hdl.handle.net/10655/158ca929a20-ff3e-407f-b086-5d854c635a47
名前 / ファイル | ライセンス | アクション |
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NIFS-567.pdf (530.9 kB)
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Item type | 研究報告書 / Research Paper(1) | |||||
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公開日 | 2009-02-26 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Transition from L Mode to High Ion Temperature Mode in CHS Heliotron/Torsatron Plasmas | |||||
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_18ws | |||||
資源タイプ | research report | |||||
著者 |
Ida, K.
× Ida, K.× Osakabe, M.× Tanaka, K.× Minami, T.× Nishimura, S.× Okamura, S.× Fujisawa, A.× Yoshimura, Y.× Kubo, S.× Akiyama, R.× Darrow, D.S.× Idei, H.× Iguchi, H.× Isobe, M.× Kado, S.× Kondo, T.× Lee, S.× Matsuoka, K.× Morita, S.× Nomura, I.× Ohdachi, S.× Sasao, M.× Shimizu, A.× Tumori, K.× Takayama, S.× Takechi, M.× Takagi, S.× Takahashi, C.× Toi, K.× Watari, T. |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | A high ion temperature mode (high T_i mode) is observed for neutral beam heated plasmas in the Compact Helical System (CHS) Heliotron/torsatron. The high T_i mode plasma is characterized by a high central ion temperature, T_i(0), and is associated with a peaked electron density profile produced by neutral beam fueling with low wall recycling. Transition from L mode to high T_i mode has been studied in CHS. The central ion temperature in the high T_i mode discharges reaches to 1 keV which is 2.5 times higher than that in the L mode discharges. The ion thermal diffusivity is significantly reduced by a factor of more than 2 - 3 in the high T_i mode plasma. The ion loss cone is observed in neutral particle flux in the energy range of 1 - 6 keV with a narrow range of pitch angle (90 pm 10 degree) in the high T_i mode. However, the degradation of ion energy confinement due to thls loss cone is negligible. | |||||
書誌情報 |
en : Research Report NIFS-Series 発行日 1998-08-01 |
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報告書番号 | ||||||
NIFS-567 | ||||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0915-633X |