Helium-Implantation-Induced Damage in NHS Steel Investigated by Slow-Positron Annihilation Spectroscopy

被引：12

作者：

Li Yuan-Fei ^{[1
,2
,3
]}

Shen Tie-Long ^{[1
]}

Gao Xing ^{[1
]}

Gao Ning ^{[1
]}

Yao Cun-Feng ^{[1
]}

Sun Jian-Rong ^{[1
]}

Wei Kong-Fang ^{[1
]}

Li Bing-Sheng ^{[1
]}

Zhang Peng ^{[4
]}

Cao Xing-Zhong ^{[4
]}

Zhu Ya-Bin ^{[1
]}

Pang Li-Long ^{[1
]}

Cui Ming-Huan ^{[1
]}

Chang Hai-Long ^{[1
]}

Wang Ji ^{[1
,2
,3
]}

Zhu Hui-Ping ^{[1
,2
]}

Wang Dong ^{[1
,2
]}

Song Peng ^{[1
,2
]}

Sheng Yan-Bin ^{[1
]}

Zhang Hong-Peng ^{[1
]}

Hu Bi-Tao ^{[3
]}

Wang Zhi-Guang ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China

[4] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China

来源：

CHINESE PHYSICS LETTERS | 2014年 / 31卷 / 03期

基金：

中国国家自然科学基金;

关键词：

METALS; IRRADIATION; DEFECTS; ALLOYS;

D O I：

10.1088/0256-307X/31/3/036101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Evolutions of defects and helium contained defects produced by atomic displacement and helium deposition with helium implantation at different temperatures in novel high silicon (NHS) steel are investigated by a slow positron beam. Differences of the defect information among samples implanted by helium to a fluence of 1 x 10(17) ions/cm(2) at room temperature, 300 degrees C, 450 degrees C and 750 degrees C are discussed. It is found that the mobility of vacancies and vacancy clusters, a recombination of vacancy-type defects and the formation of the He-V complex lead to the occurrence of these differences. At high temperature irradiations, a change of the diffusion mechanism of He atoms/He bubbles might be one of the reasons for the change of the S-parameter.

引用

页数：4

共 37 条

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