Radiation processes of impurities and hydrogen in detached divertor plasmas of JT-60U

Nakano, Tomohide; Kubo, Hirotaka; Asakura, Nobuyuki; Shimizu, Katsuhiro; Konoshima, Shigeru; Fujimoto, Kayoko; Kawashima, Hisato; Higashijima, Satoru

Volume recombination of C $^{4+}$ and $e^{-}$ into C $^{3+}$ is observed for the first time in detached plasmas with MARFE. It is found that the recombination flux of C $^{4+}$ to C $^{3+}$ is comparable to the ionization flux of C $^{3+}$ to C $^{4+}$ , and that the recombination zone is above an X-point and beneath the ionization zone. This result suggests that this volume recombination predominantly produces C $^{3+}$ ions, which contribute 60-80 % to the total radiation power in the divertor plasma.

Language	:	English
Journal	:	Proceedings of 21st IAEA Fusion Energy Conference (FEC 2006) (CD-ROM)
Volume	:
Number	:
Pages	:	8 Pages
Publication Year/Month	:	2007/03
Meeting title	:	21st IAEA Fusion Energy Conference (FEC 2006)
Held date	:	2006/10
Location (city)	:	Chengdu
Location (country)	:	China
Patent information	:
PDF	:
Paper URL	:	http://www-naweb.iaea.org/napc/physics/FEC/FEC2006/html/node246.htm#49158
DOI for research data	:
Keywords	:	no keyword
Research Facility	:	JT-60(臨界プラズマ試験装置)
Press Release	:
Article of JAEA R&D Review	:
Cooperating Institute	:

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Registration No. : BB20062147
JAEA Abstracts No. : 35000967
Paper Submission No. : 2528

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