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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 |
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| 言語種別 | 英語 |
| 発行・発表の年月 | 2009/04 |
| 形態種別 | 論文 |
| 査読 | 査読あり |
| 標題 | Simultaneous irradiation effects of hydrogen and helium ions on tungsten |
| 執筆形態 | 共著・編著（代表編著を除く） |
| 掲載誌名 | JOURNAL OF NUCLEAR MATERIALS |
| 出版社・発行元 | ELSEVIER SCIENCE BV |
| 巻・号・頁 | 386-88(C),pp.725-728 |
| 担当区分 | 筆頭著者 |
| 著者・共著者 | Y. Ueda,M. Fukumoto,J. Yoshida,Y. Ohtsuka,R. Akiyoshi,H. Iwakiri,N. Yoshida |
| 概要 | Simultaneous irradiation effects of He on tungsten blistering with hydrogen and carbon mixed ion irradiation were investigated. It was found that only 0.1% addition of He ions to 1 keV H and C mixed ion beam (C: 0.8-1.0%) reduced (473 K) or completely suppressed (653 K and 723 K) blister formation. According to TEM observation, He bubbles with the size of 2 nm or less were formed near the surface, which could be a diffusion barrier of hydrogen into the bulk due to the reduction of diffusion channel or excitation of stress field, leading to the reduction of diffusivity of hydrogen. The reduction rate of hydrogen inward flux by simultaneous He irradiation in our experimental conditions would be more than the factor of three. (C) 2008 Elsevier B.V. All rights reserved. |
| DOI | 10.1016/j.jnucmat.2008.12.300 |
| ISSN | 0022-3115/1873-4820 |