A better nanochannel tungsten film in releasing helium atoms
文献类型：期刊论文
| 作者 | Wei, Guo2,3; Li, Jingwen1; Li, Yonggang4 ; Deng, Huiqiu5; Jiang, Changzhong2,3; Ren, Feng2,3
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| 刊名 | JOURNAL OF NUCLEAR MATERIALS
 |
| 出版日期 | 2020-04-15 |
| 卷号 | 532 |
| ISSN号 | 0022-3115 |
| DOI | 10.1016/j.jnucmat.2020.152044 |
| 通讯作者 | Ren, Feng(fren@whu.edu.cn) |
| 英文摘要 | 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. |
| WOS关键词 | TOTAL-ENERGY CALCULATIONS ; DYNAMICS |
| 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 |
| WOS研究方向 | Materials Science ; Nuclear Science & Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:000523636000012 |
| 出版者 | ELSEVIER |
| 资助机构 | 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 |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/103681]  |
| 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.Henan Univ, Sch Phys & Elect, Inst Computat Mat Sci, Kaifeng 475004, Peoples R China 2.Wuhan Univ, Ctr Ion Beam Applicat, Sch Phys & Technol, Wuhan 430072, Peoples R China 3.Wuhan Univ, Hubei Nucl Solid Phys Key Lab, Wuhan 430072, 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). |
入库方式： OAI收割
来源：合肥物质科学研究院
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