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	2008/09
形態種別	論文
査読	査読あり
標題	Effect of surface roughness and substrate material on carbon erosion and deposition in the TEXTOR tokamak
執筆形態	共著・編著（代表編著を除く）
掲載誌名	PLASMA PHYSICS AND CONTROLLED FUSION
掲載区分	国外
出版社・発行元	IOP PUBLISHING LTD
巻・号・頁	50(9)
国際共著	国際共著
著者・共著者	A. Kreter,S. Brezinsek,T. Hirai,A. Kirschner,K. Krieger,M. Mayer,V. Philipps,A. Pospieszczyk,U. Samm,O. Schmitz,B. Schweer,G. Sergienko,K. Sugiyama,T. Tanabe,Y. Ueda,P. Wienhold
概要	The technique of (CH4)-C-13 tracer injection through test limiters was applied to study the influence of surface roughness and substrate material on the local C-13 deposition. Spherically shaped graphite limiters with integrated gas injection were prepared with two different grades of surface roughness, similar to 0.1 and similar to 1 mu m. In addition, tungsten limiters with a roughness of similar to 0.1 mu m were used to study the substrate material effect. The limiters were exposed to the SOL plasma for two discharge scenarios, Ohmic and neutral beam heated. The C-13 deposition efficiency-the ratio of the locally deposited to the injected amount of C-13-and the deposition pattern were evaluated by post-mortem surface analysis. Surface roughness has a pronounced effect and increases the C-13 deposition efficiency on graphite with rougher surface by a factor of 3-5 compared with smoother graphite.
DOI	10.1088/0741-3335/50/9/095008
ISSN	0741-3335/1361-6587