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	2015/07
形態種別	論文
査読	査読あり
標題	Deuterium retention in tungsten coating layers irradiated with deuterium and carbon ions
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	462,pp.354-359
著者・共著者	M. Fukumoto,T. Nakano,Y. Ueda,K. Itami,H. Kubo
概要	The effects of carbon ion fraction on deuterium retention in tungsten coating layers were investigated by irradiating the layers with mixed deuterium and carbon ion beams. The mixed ion beams had atomic carbon fractions of up to 3.2% and the sample temperature was either 500 or 700 K. Graphite was formed in the tungsten coating layer at the both temperatures; however, tungsten carbide and ditungsten carbide were not formed at the both temperatures. At 500 K, deuterium was trapped at intrinsic defects and carbon was accumulated in the tungsten coating layer. At 700 K, although trapping deuterium at intrinsic defects was difficult, deuterium was trapped predominantly at carbon accumulated in the tungsten coating layer. Analysis of deuterium desorption spectrum by multipeak fitting suggests that deuterium was retained by C-D bonds in the tungsten coating layer at 700 K. (C) 2015 Elsevier B.V. All rights reserved.
DOI	10.1016/j.jnucmat.2015.02.041
ISSN	0022-3115/1873-4820