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Defect evolution in tungsten exposed to helium plasma and deuterium plasmas studied by slow positron beam

文献类型：期刊论文

作者Lyu, Yi-Ming1; Xu, Yu-Ping2; Li, Xiao-Chun2; Shen, Xin2,3; Wu, Bo-Yu3,4; Yip, Chi-Shung2; Gao, Xiang2,5; Lin, Xiao-Dong5; Yang, Zhong-Shi2; Cao, Xing-Zhong6
刊名NUCLEAR MATERIALS AND ENERGY
出版日期2021-12-01
卷号29
关键词Tungsten Helium Deuterium Defects EAST
DOI10.1016/j.nme.2021.101094
通讯作者Xu, Yu-Ping(xuyp@ipp.ac.cn) ; Zhou, Hai-Shan(haishanzhou@ipp.ac.cn)
英文摘要Comparison of defect formation in tungsten samples exposed only to a helium plasma and those exposed to both helium plasma and subsequent deuterium plasmas is performed via Doppler broadening spectroscopy in the positron annihilation technique (DBS-PA). The S parameters of tungsten samples after helium plasma exposure increased with the increase of the incident fluence, which indicates that low energy helium plasma could induce the formation of defects such as nano-sized helium bubbles and dislocations in tungsten. The S parameters of samples exposed to helium incident fluence of 7.9 x 10(21) He/m(2) enhanced after deuterium plasmas exposure, indicating that low energy deuterium plasmas could form defects in tungsten too. Unexpectedly, deuterium plasmas exposure did not significantly influence the S parameters of the tungsten sample with helium incident fluence of 3.9 x 10(22) He/m(2), and reduced the S parameters of the tungsten sample with helium incident fluence of 7.9 x 10(22) He/m(2). These variations of S parameters could be associated with the occupation of nano-sized helium bubbles by deuterium atoms. This indicates possible competition between the increased density of vacancy-type defects by deuterium plasmas exposure and the filling of nano-sized helium bubbles by deuterium atoms, reducing detectability of these defects.
WOS关键词LOW-ENERGY ; RETENTION ; BEHAVIOR ; IRRADIATION ; STEEL
资助项目National Natural Science Foundation of China[11975260] ; National Natural Science Foundation of China[11905246] ; National Natural Science Foundation of China[11875288] ; National Key Research & Development Program of China[2017YFE0301502] ; National Key Research & Development Program of China[2018YFE0303103] ; Shenzhen Clean Energy Research Institute
WOS研究方向Nuclear Science & Technology
语种英语
出版者ELSEVIER
WOS记录号WOS:000721358100002
资助机构National Natural Science Foundation of China ; National Key Research & Development Program of China ; Shenzhen Clean Energy Research Institute
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/126658]  
专题中国科学院合肥物质科学研究院
通讯作者Xu, Yu-Ping; Zhou, Hai-Shan
作者单位1.Shenzhen Univ, Coll Phys & Optoelect Engn, Shenzhen 518060, Peoples R China
2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
3.Univ Sci & Technol China, Sci Isl Branch Grad, Hefei 230031, Peoples R China
4.Anhui Univ, Inst Mat Sci & Informat Technol, Hefei 230039, Peoples R China
5.Shenzhen Univ, Adv Energy Res Ctr, Shenzhen 518060, Peoples R China
6.Chinese Acad Sci, Multidiscipline Res Ctr, Inst High Energy Phys, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Lyu, Yi-Ming,Xu, Yu-Ping,Li, Xiao-Chun,et al. Defect evolution in tungsten exposed to helium plasma and deuterium plasmas studied by slow positron beam[J]. NUCLEAR MATERIALS AND ENERGY,2021,29.
APA Lyu, Yi-Ming.,Xu, Yu-Ping.,Li, Xiao-Chun.,Shen, Xin.,Wu, Bo-Yu.,...&Luo, Guang-Nan.(2021).Defect evolution in tungsten exposed to helium plasma and deuterium plasmas studied by slow positron beam.NUCLEAR MATERIALS AND ENERGY,29.
MLA Lyu, Yi-Ming,et al."Defect evolution in tungsten exposed to helium plasma and deuterium plasmas studied by slow positron beam".NUCLEAR MATERIALS AND ENERGY 29(2021).

入库方式： OAI收割

来源：合肥物质科学研究院

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