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	2004/08
形態種別	論文
査読	査読あり
標題	Effects of carbon impurity in fusion plasmas on erosion of RAF first wall
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	329,pp.771-774
著者・共著者	Y Ueda,T Funabiki,T Shimada,R Kawakami,M Nishikawa
概要	Sputtering erosion of RAF (reduced-activation ferritic/martensitic steel) was studied under hydrogen and carbon mixed ion beam irradiation. Ion beam energy, flux, and fluence were 1 keV H-3(+) (dominant species), similar to1.5 x 10(20) H/m(2)s and similar to5 x 10(24) H/m(2), respectively. Erosion yields of RAF irradiated by the mixed ion beams are found to be temperature dependent. For carbon concentration in the beam of 0.84% (1.3%), an effective erosion yield at 453 K is lower than that at 773 K by 18% (34%). For 0.8% C in the beam, the surface carbon composition at 453 K is about 20%, while at 773 K it is very low (similar to3%), which suggests swift carbon diffusion into the bulk. This experimental surface carbon concentration agrees with simulation results by the EDDY code. The change in the effective erosion yield with temperature is consistent with the change in surface carbon concentration. (C) 2004 Elsevier B.V. All rights reserved.
DOI	10.1016/j.jnucmat.2004.04.175
ISSN	0022-3115