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Towards understanding the differences in irradiation effects of He, Ne and Ar plasma by investigating the physical origin of their clustering in tungsten

文献类型：期刊论文

作者Kong, Xiang-Shan1; You, Yu-wei1; Li, Xiang-yan1; Wu, Xuebang1; Liu, C. S.1; Chen, Jun-Ling2; Luo, G. -N.2
刊名NUCLEAR FUSION
出版日期2016-10-01
卷号56期号:10页码:1-11
关键词Tungsten Seeding Impurities Ne/ar Clustering Behaviour Irradiation Effects First-principles Calculations
DOI10.1088/0029-5515/56/10/106002
文献子类Article
英文摘要While inert gas seeding to improve energy confinement has been successfully applied in many tokamak experiments, questions remain as to the irradiation effects of inert gases on tungsten. In this paper, we have systematically investigated the clustering behaviors of the inert gas atoms He, Ne and Ar in plasma-facing tungsten using first-principles calculations. Small interstitial clusters, He-m, Ne-m, and Ar-m, can form due to the attraction between the atoms and tend to expand along the (1 1 0) planes. The inert gas clusters induce strong lattice distortions and so it is energetically favorable for a self-interstitial atom to be emitted from the clusters when the numbers of atoms are above six, three, three for He-m, Ne-m, and Ar-m respectively. The clustering behaviors can be well explained by the intrinsic repulsive interaction between the inert gas atoms and the attractive interaction coming from the reduced valence-electron density by interstitial inert gas atoms. Compared to He, the much greater attraction between the Ne/Ar atoms and the lower trigger condition of 'self-trapping process' for Ne/Ar clusters provide a reasonable explanation for the difference of irradiation effects on tungsten between He and Ne/Ar plasmas, i.e. Ne/Ar plasmas cannot result in the formation of holes/bubbles and fiber-form nanostructures on tungsten surface under the same irradiation conditions as He plasma.
WOS关键词MOLECULAR-DYNAMICS ; 1ST PRINCIPLES ; HELIUM ; DENSITY ; DEFECTS ; APPROXIMATION ; SIMULATION ; VACANCIES ; BEHAVIOR ; SURFACE
WOS研究方向Physics
语种英语
WOS记录号WOS:000383953000006
资助机构National Magnetic Confinement Fusion Program(2015GB112001) ; National Magnetic Confinement Fusion Program(2015GB112001) ; National Magnetic Confinement Fusion Program(2015GB112001) ; National Magnetic Confinement Fusion Program(2015GB112001) ; National Magnetic Confinement Fusion Program(2015GB112001) ; National Magnetic Confinement Fusion Program(2015GB112001) ; National Magnetic Confinement Fusion Program(2015GB112001) ; National Magnetic Confinement Fusion Program(2015GB112001) ; National Natural Science Foundation of China(11505229 ; National Natural Science Foundation of China(11505229 ; National Natural Science Foundation of China(11505229 ; National Natural Science Foundation of China(11505229 ; National Natural Science Foundation of China(11505229 ; National Natural Science Foundation of China(11505229 ; National Natural Science Foundation of China(11505229 ; National Natural Science Foundation of China(11505229 ; Anhui Provincial Natural Science Foundation(1508085SQE209) ; Anhui Provincial Natural Science Foundation(1508085SQE209) ; Anhui Provincial Natural Science Foundation(1508085SQE209) ; Anhui Provincial Natural Science Foundation(1508085SQE209) ; Anhui Provincial Natural Science Foundation(1508085SQE209) ; Anhui Provincial Natural Science Foundation(1508085SQE209) ; Anhui Provincial Natural Science Foundation(1508085SQE209) ; Anhui Provincial Natural Science Foundation(1508085SQE209) ; Youth Innovation Promotion Association of CAS(2015384) ; Youth Innovation Promotion Association of CAS(2015384) ; Youth Innovation Promotion Association of CAS(2015384) ; Youth Innovation Promotion Association of CAS(2015384) ; Youth Innovation Promotion Association of CAS(2015384) ; Youth Innovation Promotion Association of CAS(2015384) ; Youth Innovation Promotion Association of CAS(2015384) ; Youth Innovation Promotion Association of CAS(2015384) ; Center for Computation Science, Hefei Institutes of Physical Sciences ; Center for Computation Science, Hefei Institutes of Physical Sciences ; Center for Computation Science, Hefei Institutes of Physical Sciences ; Center for Computation Science, Hefei Institutes of Physical Sciences ; Center for Computation Science, Hefei Institutes of Physical Sciences ; Center for Computation Science, Hefei Institutes of Physical Sciences ; Center for Computation Science, Hefei Institutes of Physical Sciences ; Center for Computation Science, Hefei Institutes of Physical Sciences ; International Atomic Energy Agency ; International Atomic Energy Agency ; International Atomic Energy Agency ; International Atomic Energy Agency ; International Atomic Energy Agency ; International Atomic Energy Agency ; International Atomic Energy Agency ; International Atomic Energy Agency ; 11575229 ; 11575229 ; 11575229 ; 11575229 ; 11575229 ; 11575229 ; 11575229 ; 11575229 ; 11375231) ; 11375231) ; 11375231) ; 11375231) ; 11375231) ; 11375231) ; 11375231) ; 11375231) ; National Magnetic Confinement Fusion Program(2015GB112001) ; National Magnetic Confinement Fusion Program(2015GB112001) ; National Magnetic Confinement Fusion Program(2015GB112001) ; National Magnetic Confinement Fusion Program(2015GB112001) ; National Magnetic Confinement Fusion Program(2015GB112001) ; National Magnetic Confinement Fusion Program(2015GB112001) ; National Magnetic Confinement Fusion Program(2015GB112001) ; National Magnetic Confinement Fusion Program(2015GB112001) ; National Natural Science Foundation of China(11505229 ; National Natural Science Foundation of China(11505229 ; National Natural Science Foundation of China(11505229 ; National Natural Science Foundation of China(11505229 ; National Natural Science Foundation of China(11505229 ; National Natural Science Foundation of China(11505229 ; National Natural Science Foundation of China(11505229 ; National Natural Science Foundation of China(11505229 ; Anhui Provincial Natural Science Foundation(1508085SQE209) ; Anhui Provincial Natural Science Foundation(1508085SQE209) ; Anhui Provincial Natural Science Foundation(1508085SQE209) ; Anhui Provincial Natural Science Foundation(1508085SQE209) ; Anhui Provincial Natural Science Foundation(1508085SQE209) ; Anhui Provincial Natural Science Foundation(1508085SQE209) ; Anhui Provincial Natural Science Foundation(1508085SQE209) ; Anhui Provincial Natural Science Foundation(1508085SQE209) ; Youth Innovation Promotion Association of CAS(2015384) ; Youth Innovation Promotion Association of CAS(2015384) ; Youth Innovation Promotion Association of CAS(2015384) ; Youth Innovation Promotion Association of CAS(2015384) ; Youth Innovation Promotion Association of CAS(2015384) ; Youth Innovation Promotion Association of CAS(2015384) ; Youth Innovation Promotion Association of CAS(2015384) ; Youth Innovation Promotion Association of CAS(2015384) ; Center for Computation Science, Hefei Institutes of Physical Sciences ; Center for Computation Science, Hefei Institutes of Physical Sciences ; Center for Computation Science, Hefei Institutes of Physical Sciences ; Center for Computation Science, Hefei Institutes of Physical Sciences ; Center for Computation Science, Hefei Institutes of Physical Sciences ; Center for Computation Science, Hefei Institutes of Physical Sciences ; Center for Computation Science, Hefei Institutes of Physical Sciences ; Center for Computation Science, Hefei Institutes of Physical Sciences ; International Atomic Energy Agency ; International Atomic Energy Agency ; International Atomic Energy Agency ; International Atomic Energy Agency ; International Atomic Energy Agency ; International Atomic Energy Agency ; International Atomic Energy Agency ; International Atomic Energy Agency ; 11575229 ; 11575229 ; 11575229 ; 11575229 ; 11575229 ; 11575229 ; 11575229 ; 11575229 ; 11375231) ; 11375231) ; 11375231) ; 11375231) ; 11375231) ; 11375231) ; 11375231) ; 11375231)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/30195]  
专题合肥物质科学研究院_中科院固体物理研究所
作者单位1.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, POB 1129, Hefei 230031, Peoples R China
2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Kong, Xiang-Shan,You, Yu-wei,Li, Xiang-yan,et al. Towards understanding the differences in irradiation effects of He, Ne and Ar plasma by investigating the physical origin of their clustering in tungsten[J]. NUCLEAR FUSION,2016,56(10):1-11.
APA Kong, Xiang-Shan.,You, Yu-wei.,Li, Xiang-yan.,Wu, Xuebang.,Liu, C. S..,...&Luo, G. -N..(2016).Towards understanding the differences in irradiation effects of He, Ne and Ar plasma by investigating the physical origin of their clustering in tungsten.NUCLEAR FUSION,56(10),1-11.
MLA Kong, Xiang-Shan,et al."Towards understanding the differences in irradiation effects of He, Ne and Ar plasma by investigating the physical origin of their clustering in tungsten".NUCLEAR FUSION 56.10(2016):1-11.

入库方式： OAI收割

来源：合肥物质科学研究院

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