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	2007/06
形態種別	論文
査読	査読あり
標題	Surface studies of tungsten erosion and deposition in JT-60U
執筆形態	共著・編著（代表編著を除く）
掲載誌名	JOURNAL OF NUCLEAR MATERIALS
掲載区分	国外
出版社・発行元	ELSEVIER SCIENCE BV
巻・号・頁	363(1-3),pp.66-71
担当区分	筆頭著者
著者・共著者	Y. Ueda,M. Fukumoto,M. Nishikawa,T. Tanabe,N. Miya,T. Aral,K. Masaki,Y. Ishimoto,K. Tsuzuki,N. Asakura
概要	In order to study tungsten erosion and migration in JT-60U, 13 W tiles have been installed in the outer divertor region and tungsten deposition on graphite tiles was measured. Dense local tungsten deposition was observed on a CFC tile toroidally adjacent to the W tiles, which resulted from prompt ionization and short range migration of tungsten along field lines. Tungsten deposition with relatively high surface density was found on an inner divertor tile around standard inner strike positions and on an outer wing tile of a dome. On the outer wing tile, tungsten deposition was relatively high compared with carbon deposition. In addition, roughly uniform tungsten depth distribution near the upper edge of the inner divertor tile was observed. This could be due to lift-up of strike point positions in selected 25 shots and tungsten flow in the SOL plasma. (c) 2006 Elsevier B.V. All rights reserved.
DOI	10.1016/j.jnucmat.2006.12.060
ISSN	0022-3115