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	1996/01
形態種別	論文
査読	査読あり
標題	Reduction of radiation-enhanced sublimation of graphite under high flux beam irradiation
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	227(3),pp.251-258
担当区分	筆頭著者
著者・共著者	Y Ueda,K Nakano,Y Ohtsuka,M Isobe,S Goto,M Nishikawa
概要	Radiation-enhanced sublimation (RES) of isotropic graphite was studied under high flux beam irradiation. Irradiation was performed with a 5 keV Ar beam with a maximum flux of 1.5 x 10(21) m(-2) s(-1), about two orders of magnitude higher than that of previous beam experiments. It is found that the total erosion yield of isotropic graphite at 1980 K under high flux conditions of 1 x 10(21) m(-2) s(-1) is reduced to a value of about 3 in comparison with a yield of 5.9 under low flux conditions of 3.5 x 10(19) m(-2) s(-1). The dependence of the RES yield (total yield subtracted by physical sputtering yield) on the flux phi (phi > 1 x 10(20) m(-2) s(-1)) is as phi(-0.26), which is much stronger than that obtained in the low flux region (phi(-0.07), phi < 1 x 10(19) m(-2) s(-1)). The RES model based on diffusion and annihilation of C self-interstitials including stable defects for the sinks of interstitials is discussed in terms of the flux dependence of RES yield.
DOI	10.1016/0022-3115(95)00158-1
ISSN	0022-3115
NAID	80008808396