Hydrocarbons in divertor plasmas; What can be understood from spectroscopy

Nakano, Tomohide; Kado, Shinichiro*

Descriptions on the band structure of the $A^2{it Delta}to X^2{it Pi}$ system of a CH radical, the method of hydrocarbon flux measurement and the modeling of hydrocarbon elementary processes are given. Then, the reviews of recent research achievements are presented. At JT-60U divertor plates, the chemical sputtering yields of not only $mbox{CH}_4$ but also $mbox{C}_2mbox{H}_x$ have been measured with simultaneous measurement of CH and $mbox{C}_2$ bands. In MAP-II of the University of Tokyo, hydrocarbon-enhanced molecular assisted recombination processes have been qualitatively proved by comparison of the measured and the modeled CH band intensity.

Language	:	Japanese
Journal	:	Purazuma, Kaku Yugo Gakkai-Shi
Volume	:	80
Number	:	2
Pages	:	p.91 - 100
Publication Year/Month	:	2004/02
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Paper URL	:	http://ci.nii.ac.jp/naid/110003827674
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Keywords	:	Hydrocarbon; Spectroscopy; Divertor; Molecule; CH; Chemical Sputtering; MAR; JT-60; MAP-II
Research Facility	:	JT-60(臨界プラズマ試験装置)
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Registration No. : A20030470
JAEA Abstracts No. : 320391
Paper Submission No. : 20858

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