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	2011/12
形態種別	論文
査読	査読あり
標題	Ion-driven permeation of deuterium in tungsten by deuterium and carbon-mixed ion irradiation
執筆形態	共著・編著（代表編著を除く）
掲載誌名	PHYSICA SCRIPTA
出版社・発行元	IOP PUBLISHING LTD
巻・号・頁	T145
著者・共著者	H. Y. Peng,H. T. Lee,Y. Ohtsuka,Y. Ueda
概要	Ion-driven permeation of deuterium (D) through tungsten (W) by D+C ion irradiation at 1 keV was studied. The changes in permeation flux as a function of temperature (T-w = 550-1050K) and carbon (C) fraction in the incident flux (f(C) similar to 0.1-3%) are discussed. A temperature-dependent increase in the permeation flux under D-C ion irradiation was observed in comparison to D-only ion irradiation, with a value 200 times larger at 700-800 K. However, the measured C/W surface composition was temperature independent, meaning that the temperature-dependent increase in permeation flux was not directly correlated to the C on the W surface. The increase in permeation flux can be qualitatively interpreted as a reduction in the combination coefficient or diffusivity owing to tungsten carbide formation at the incident surface, but the temperature dependence lacks an adequate explanation. The increase in permeation flux was correlated to the increase in blister size observed on the W surface.
DOI	10.1088/0031-8949/2011/T145/014046
ISSN	0031-8949/1402-4896
Put Code(ORCID)	49208308
PermalinkURL	http://www.scopus.com/inward/record.url?eid=2-s2.0-84863139312&partnerID=MN8TOARS
researchmap用URL	http://orcid.org/0000-0002-7720-4023