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	2019/05
形態種別	論文
査読	査読あり
標題	LIBS measurement of trace tantalum and rhenium in tungsten for in-situ diagnostic of nuclear transmutation
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
巻・号・頁	522,pp.324-328
著者・共著者	Kenzo Ibano,Daisuke Nishijima,Yoshio Ueda,Russell P. Doerner
概要	Calibration-free laser-induced breakdown spectroscopy (CF-LIBS)was applied to tungsten (W)- tantalum (Ta)alloy and W-rhenium (Re)alloy. In the W-Ta alloy measurement, an apparent Ta I line at 648.5 nm was found to be isolated from W I lines and used for the concentration determination. Accurate concentration measurements were achieved for a W - 2 at.% Ta specimen at the ambient gas pressure between 0.1 and 10 Torr of He, Ne and Ar gas. Within these ambient gas species, the highest line intensities were obtained by Ar gas. In the W-Re alloy measurement, the detection limit of trace Re in W-Re was investigated. CF-LIBS results agree well with the nominal concentration of Re down to W-0.5 at.% Re specimen which is better than the measurement accuracy of EDX (energy-dispersive X-ray micro-analysis). Further improvements are required in order to measure 0.2 at.% Re in W expected at ITER.
DOI	10.1016/j.jnucmat.2019.05.030
ISSN	0022-3115