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	2018/03/01
形態種別	論文
査読	査読あり
標題	Laser-induced breakdown spectroscopy measurement of a small fraction of rhenium in bulk tungsten
執筆形態	共著・編著（代表編著を除く）
掲載誌名	Spectrochimica Acta - Part B Atomic Spectroscopy
掲載区分	国外
出版社・発行元	Elsevier B.V.
巻・号・頁	141,pp.94-98
国際共著	国際共著
著者・共著者	D. Nishijima,Y. Ueda,R. P. Doerner,M. J. Baldwin,K. Ibano
概要	Laser-induced breakdown spectroscopy (LIBS) of bulk rhenium (Re) and tungsten (W)-Re alloy has been performed using a Q-switched Nd:YAG laser (wavelength = 1064 nm, pulse width ∼4–6 ns, laser energy = 115 mJ). It is found that the electron temperature, Te, of laser-induced Re plasma is lower than that of W plasma, and that Te of W-Re plasma is in between Re and W plasmas. This indicates that material properties affect Te in a laser-induced plasma. For analysis of W-3.3%Re alloy, only the strongest visible Re I 488.9 nm line is found to be used because of the strong enough intensity without contamination with W lines. Using the calibration-free LIBS method, the atomic fraction of Re, cRe, is evaluated as a function of the ambient Ar gas pressure, PAr.
DOI	10.1016/j.sab.2018.01.013
ISSN	0584-8547