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	2000/11
形態種別	論文
査読	査読あり
標題	Irradiation experiments of divertor pebbles
執筆形態	共著・編著（代表編著を除く）
掲載誌名	FUSION ENGINEERING AND DESIGN
掲載区分	国外
出版社・発行元	ELSEVIER SCIENCE SA
巻・号・頁	49-50,pp.223-228
著者・共著者	M Isobe,K Matsuhiro,Y Ueda,M Nishikawa,J Ohashi
概要	A multi-layer coated pebble is the essential component of the pebble drop divertor system. For the test of the integrity of the multi-layer structure, two types of pebble were fabricated and irradiated by high flux beams. The one has a SIC kernel, and the other has a carbon kernel. Each type of pebble had a SiC tritium permeation barrier layer and a graphite plasma facing layer. These pebbles were irradiated by 6.7 MW/m(2) of electron beam and 6.2 x 10(21) D/m(2) of high particle flux deuterium beam. After the irradiation, they were examined the failure of the coating layers and the sputtering yield of the surface layer. On the carbon kernel pebbles, no cracks and failures of the coating layers were detected after the irradiation. The test results of SiC kernel pebbles indicated there were some failures at the interface between a SiC layer and a surface graphite layer due to the fabrication process. (C) 2000 Elsevier Science B.V. All rights reserved.
DOI	10.1016/S0920-3796(00)00444-0
ISSN	0920-3796