ウエダ　ヨシオ   Ueda Yoshio   上田　良夫    所属   追手門学院大学  理工学部 電気電子工学科    職種   教授
言語種別	英語
発行・発表の年月	2009/12
形態種別	論文
査読	査読あり
標題	Comparison of (C2H4)-C-13 and (CH4)-C-13 injection through graphite and tungsten limiters in TEXTOR
執筆形態	共著・編著（代表編著を除く）
掲載誌名	PHYSICA SCRIPTA
出版社・発行元	IOP PUBLISHING LTD
巻・号・頁	T138
国際共著	国際共著
著者・共著者	S. Brezinsek,A. Kreter,R. Ding,T. Hirai,A. Kirschner,V. Philipps,A. Pospieszczyk,U. Samm,B. Schweer,O. Schmitz,K. Sugiyama,T. Tanabe,Y. Ueda
概要	Experiments in the plasma-wall interaction facility at TEXTOR have been carried out to compare (i) the local transport of (CH4)-C-13 and (C2H4)-C-13 injected through a gas aperture implemented in spherical limiters made of polycrystalline tungsten and fine-grain graphite and (ii) the properties of local deposited carbon layers on the polished limiter surface. Each limiter was positioned in the scrape-off layer and exposed to ten identical ohmic deuterium discharges of 4s length-accumulating 40 plasma seconds. The injection rates were normalized to the amount of injected C-13. The analysis is twofold: spectroscopy was applied to follow up in situ the observable hydrocarbon break-up products (C-2, CD, C+, and C2+), and post mortem analysis was used to determine the C-13 deposition efficiency. The penetration depths of hydrocarbon break-up products in the plasma were determined. Significant CH emission was observed in front of W limiter prior to injection.
DOI	10.1088/0031-8949/2009/T138/014022
ISSN	0031-8949