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Slow positron annihilation studies on helium irradiated tungsten

文献类型：期刊论文

作者Wang, Zhiguang1; Cui, Minghuan1; Yao, Cunfeng1; Shen, Tielong1; Pang, Lilong1; Zhu, Yabin1; Li, Bingsheng1; Cao, Xingzhong2; Zhang, Peng2; Sun, Jianrong1
刊名NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
出版日期2017-09-01
卷号406页码:578-584
关键词Doppler broadening spectroscopy Helium irradiation Tungsten
ISSN号0168-583X
DOI10.1016/j.nimb.2017.03.127
英文摘要Pure tungsten samples were irradiated to 1.0 x 10(16), 5.0 x 10(16) and 1.0 x 10(17) ions/cm(2) at room temperature with 500 and 200 keV helium ions, respectively, to understand the growth of vacancy like defects in tungsten induced by helium irradiation. The doppler broadening spectroscopy of slow positron annihilation was used to characterize the behavior of vacancy like defects, such as HeliumnVacancym (i.e. HenVm) complexes, induced by He irradiation. When the irradiation fluence is below 1.0 x 10(17) ions/cm(2), the size and density of vacancy like defects show increasing trends with increasing fluences. The density of vacancy like defects decreases with increasing depths due to the increasing amounts or n/m ratios in HenVm complexes. When the ratios reach certain values, the size of vacancy like defects increases. When the 200 keV He irradiation fluence increases to 1.0 x 10(17) ions/cm(2), the size of vacancy like defects decreases. When the 500 keV He irradiation fluence increases to 1.0 x 10(17) ions/cm(2), the size and density of vacancy like defects grow larger. The formation and evolution of irradiation induced defects and the growth mechanism of HenVm complexes are discussed in this paper on the bases of dpa levels, He concentrations, C-He/dpa ratios and electronic energy loss depositions. (C) 2017 Elsevier B.V. All rights reserved.
WOS关键词HEAVY-ION IRRADIATION ; IMPLANTED TUNGSTEN ; INDUCED DEFECTS ; BEHAVIOR ; MICROSTRUCTURE ; SIMULATION ; EVOLUTION ; DYNAMICS ; METALS ; DAMAGE
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences[XDA03010301] ; National Natural Science Foundation of China[11605256] ; National Natural Science Foundation of China[91426301] ; National Natural Science Foundation of China[11405231] ; National Natural Science Foundation of China[11505246] ; National Natural Science Foundation of China[11375242] ; National Natural Science Foundation of China[11575258] ; National Natural Science Foundation of China[11505247]
WOS研究方向Instruments & Instrumentation ; Nuclear Science & Technology ; Physics
语种英语
WOS记录号WOS:000407659500034
出版者ELSEVIER SCIENCE BV
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China
源URL[http://119.78.100.186/handle/113462/45485]  
专题近代物理研究所_先进核能材料研究室（ADS）
通讯作者Wang, Zhiguang; Cui, Minghuan
作者单位1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China
2.Chinese Acad Sci, Key Lab Nucl Anal Tech, Inst High Energy Phys, Beijing 100049, Peoples R China
3.North China Elect Power Univ, Beijing 102206, Peoples R China
4.Chinese Acad Sci, Ningbo Inst Ind Technol, Ningbo 315200, Zhejiang, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Zhiguang,Cui, Minghuan,Yao, Cunfeng,et al. Slow positron annihilation studies on helium irradiated tungsten[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,2017,406:578-584.
APA Wang, Zhiguang.,Cui, Minghuan.,Yao, Cunfeng.,Shen, Tielong.,Pang, Lilong.,...&Zhang, Hongpeng.(2017).Slow positron annihilation studies on helium irradiated tungsten.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,406,578-584.
MLA Wang, Zhiguang,et al."Slow positron annihilation studies on helium irradiated tungsten".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS 406(2017):578-584.

入库方式： OAI收割

来源：近代物理研究所

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