A better nanochannel tungsten film in releasing helium atoms

doi:10.1016/j.jnucmat.2020.152044

HFCAS OpenIR

	A better nanochannel tungsten film in releasing helium atoms
	Wei, Guo 1,2; Li, Jingwen 3; Li, Yonggang4 ; Deng, Huiqiu 5; Jiang, Changzhong 1,2; Ren, Feng 1,2
	2020-04-15
发表期刊	JOURNAL OF NUCLEAR MATERIALS
ISSN	0022-3115
通讯作者	Ren, Feng(fren@whu.edu.cn)
摘要	Discovering highly radiation resistant plasma facing materials (PFM) is an urgent target for nuclear fusion reactor. In our previous work, a new PFM (nanochannel tungsten film) that consists of many tungsten crystal columns was found having excellent radiation tolerant properties. In the present work, three tungsten columns whose top surfaces are {100}, {110} and {111}-oriented were studied by molecular dynamics simulations and density functional theory calculations. We find that the tungsten columns whose top surfaces are {100}-oriented retain fewer helium atoms than the tungsten columns whose top surfaces are {110} or {111}-oriented. Moreover, the microstructural changes of tungsten columns whose top surfaces are {100}-oriented are smaller than others after high helium fluence exposure, which indicates that the nanochannel tungsten film maybe more suitable than bulk tungsten for plasma facing material in releasing helium atoms and delaying the formation of "fuzz" structure. The results reported here can help us to design a better radiation resistant plasma facing material in the future. (C) 2020 Elsevier B.V. All rights reserved.
DOI	10.1016/j.jnucmat.2020.152044
关键词[WOS]	TOTAL-ENERGY CALCULATIONS ; DYNAMICS
收录类别	SCI
语种	英语
资助项目	National Science Fund for Excellent Young Scholars[11522543] ; Natural Science Foundation of China[11935011] ; Natural Science Foundation of China[11875207] ; Natural Science Foundation of China[11475129] ; Natural Science Foundation of Hubei Province, China[2016CFA080] ; Fundamental Research Funds for the Central Universities
项目资助者	National Science Fund for Excellent Young Scholars ; Natural Science Foundation of China ; Natural Science Foundation of Hubei Province, China ; Fundamental Research Funds for the Central Universities
WOS研究方向	Materials Science ; Nuclear Science & Technology
WOS类目	Materials Science, Multidisciplinary ; Nuclear Science & Technology
WOS记录号	WOS:000523636000012
出版者	ELSEVIER
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/103682
专题	中国科学院合肥物质科学研究院
通讯作者	Ren, Feng
作者单位	1.Wuhan Univ, Ctr Ion Beam Applicat, Sch Phys & Technol, Wuhan 430072, Peoples R China 2.Wuhan Univ, Hubei Nucl Solid Phys Key Lab, Wuhan 430072, Peoples R China 3.Henan Univ, Sch Phys & Elect, Inst Computat Mat Sci, Kaifeng 475004, Peoples R China 4.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China 5.Hunan Univ, Sch Phys & Elect, Dept Appl Phys, Changsha 410082, Hunan, Peoples R China
推荐引用方式 GB/T 7714	Wei, Guo,Li, Jingwen,Li, Yonggang,et al. A better nanochannel tungsten film in releasing helium atoms[J]. JOURNAL OF NUCLEAR MATERIALS,2020,532.
APA	Wei, Guo,Li, Jingwen,Li, Yonggang,Deng, Huiqiu,Jiang, Changzhong,&Ren, Feng.(2020).A better nanochannel tungsten film in releasing helium atoms.JOURNAL OF NUCLEAR MATERIALS,532.
MLA	Wei, Guo,et al."A better nanochannel tungsten film in releasing helium atoms".JOURNAL OF NUCLEAR MATERIALS 532(2020).