Characterization of proton irradiation-induced defect in the A508-3 steel by slow positron beam

被引：27

作者：

Wan, Qiang-mao ^{[1
,2
]}

Shu, Guo-gang ^{[2
,3
]}

Wang, Rong-shan ^{[1
]}

Ding, Hui ^{[2
]}

Peng, Xiao ^{[1
,2
]}

Zhang, Qi ^{[2
]}

Lei, Jing ^{[2
]}

机构：

[1] Suzhou Nucl Power Res Inst Co Ltd, Suzhou 215004, Peoples R China

[2] Wuhan Univ, Wuhan 430072, Peoples R China

[3] China Nucl Power Engn Co Ltd, Shenzhen 518031, Peoples R China

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2012年 / 287卷

基金：

国家高技术研究发展计划(863计划);

关键词：

A508-3; steel; Ion irradiation; Slow positron beam; ANNIHILATION; VACANCIES; FE; EVOLUTION; MODEL; IRON;

D O I：

10.1016/j.nimb.2012.04.013

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Proton irradiated A508-3 steel samples at room temperature were characterized by slow positron Doppler broadening spectroscopy to investigate the evolution of the irradiation-induced defects. S parameters of the irradiated samples were higher than those of the unirradiated samples. The S-W plot indicated that only one type of defect was presented in all the samples. These defects seem to be the vacancy-impurity complexes (associated with C, H, Mn or Ni) or divacancies. On the basis of the assumption that irradiation induced-defects consist of mono-vacancies, the concentration of these defects (similar to 10(20)/cm(3)) rapidly increases at the low dose (below about 0.15 dpa) and then tends to saturate at high dose (up to 0.35 dpa). (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：148 / 152

页数：5

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