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Slow positron annihilation studies on helium irradiated tungsten

文献类型：期刊论文

作者Sun, JR; Cao XZ(曹兴忠); Zhang P(张鹏); Wang, ZG; Zhang, HP; Sheng, YB; Chang, HL; Gao, N; Gao, X; Wang, J
刊名NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
出版日期2017
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
文献子类Article; Proceedings Paper
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.
会议地点Chinese Acad Sci, Inst Modern Phys, Lanzhou, PEOPLES R CHINA
电子版国际标准刊号1872-9584
WOS关键词HEAVY-ION IRRADIATION ; IMPLANTED TUNGSTEN ; INDUCED DEFECTS ; BEHAVIOR ; MICROSTRUCTURE ; SIMULATION ; EVOLUTION ; DYNAMICS ; METALS ; DAMAGE
会议日期JUL 24-29, 2016
WOS研究方向Instruments & Instrumentation ; Nuclear Science & Technology ; Physics
语种英语
WOS记录号WOS:000407659500034
源URL[http://ir.ihep.ac.cn/handle/311005/284892]  
专题中国科学院高能物理研究所_中国散裂中子源
高能物理研究所_多学科研究中心
作者单位中国科学院高能物理研究所
推荐引用方式
GB/T 7714		 Sun, JR,Cao XZ,Zhang P,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 Sun, JR.,曹兴忠.,张鹏.,Wang, ZG.,Zhang, HP.,...&Cui, MH.(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 Sun, JR,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：高能物理研究所

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