Positron annihilation lifetime studies of stainless steel under proton and Xe irradiation

doi:10.1016/j.fusengdes.2017.04.116

	Positron annihilation lifetime studies of stainless steel under proton and Xe irradiation
	Xu, Chaoliang 1; Zhang, Guodong 1; Qian, Wangjie 1; Mei, Jinna 1; Liu, Xiangbing 1; Li, Chengtao 1; Xue, Fei 1; Li, Jinyu2 ; Liu, Huiping2
刊名	FUSION ENGINEERING AND DESIGN
	2017-07-01
卷号	120 页码:34-38
关键词	Stainless steel Irradiation Open volume defects Lifetime
ISSN号	0920-3796
DOI	10.1016/j.fusengdes.2017.04.116
英文摘要	Specimens of stainless steel reactor internals were irradiated with 240 keV protons and 6 MeV Xe ions up to 15 dpa. The positron annihilation lifetime spectroscopy (PLS) was carried out to study the development of vacancy-type defects. It is indicated that positrons are trapped by vacancies, vacancy clusters and other defects (precipitate, dislocations). The short lifetime parameter tau(1) decreases when specimens are irradiated to 2 dpa by proton, whereas in the case of Xe irradiation, tau(1) decreases when specimens are irradiated to 7 dpa. The positron annihilation at small cluster with H atoms (for H irradiation) and precipitated phase (for Xe irradiation) may explain this transition. The long lifetime parameter tau(2) increases continuously with damage increase. Compared with Xe irradiated specimens, a larger tau(2) is obtained in proton irradiated specimens at the same damage. The gas atoms-vacancies, which are expected to be the early state of H bubbles, will develop into small bubbles with the increase of irradiation damage and thus cause long lifetime parameter increase. (C) 2017 Elsevier B.V. All rights reserved.
WOS关键词	MICROSTRUCTURAL EVOLUTION ; AUSTENITIC STAINLESS ; CONTAINING HYDROGEN ; RADIATION-DAMAGE ; RPV STEELS ; DEFECTS ; PROGRAM ; HELIUM ; SPECTROSCOPY ; TEMPERATURE
WOS研究方向	Nuclear Science & Technology
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000403516400006
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/44826]
专题	中国科学院近代物理研究所
通讯作者	Xu, Chaoliang
作者单位	1.Suzhou Nucl Power Res Inst, Suzhou 215004, Jiangsu, Peoples R China 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Xu, Chaoliang,Zhang, Guodong,Qian, Wangjie,et al. Positron annihilation lifetime studies of stainless steel under proton and Xe irradiation[J]. FUSION ENGINEERING AND DESIGN,2017,120:34-38.
APA	Xu, Chaoliang.,Zhang, Guodong.,Qian, Wangjie.,Mei, Jinna.,Liu, Xiangbing.,...&Liu, Huiping.(2017).Positron annihilation lifetime studies of stainless steel under proton and Xe irradiation.FUSION ENGINEERING AND DESIGN,120,34-38.
MLA	Xu, Chaoliang,et al."Positron annihilation lifetime studies of stainless steel under proton and Xe irradiation".FUSION ENGINEERING AND DESIGN 120(2017):34-38.