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Surface degeneration of W crystal irradiated with low-energy hydrogen ions

文献类型：期刊论文

作者Fan, Hongyu1; You, Yuwei2; Ni, Weiyuan1; Yang, Qi1; Liu, Lu1; Benstetter, Gunther3; Liu, Dongping1; Liu, Changsong2
刊名SCIENTIFIC REPORTS
出版日期2016-03-29
卷号6期号:无页码:1-9
DOI10.1038/srep23738
文献子类Article
英文摘要The damage layer of a W (100) crystal irradiated with 120 eV hydrogen ions at a fluence of up to 1.5 x 10(25)/m(2) was investigated by scanning electron microscopy and conductive atomic force microscopy (CAFM). The periodic surface degeneration of the W crystal at a surface temperature of 373 K was formed at increasing hydrogen fluence. Observations by CCD camera and CAFM indicate the existence of ultrathin surface layers due to low-energy H irradiation. The W surface layer can contain a high density of nanometer-sized defects, resulting in the thermal instability of W atoms in the surface layer. Our findings suggest that the periodic surface degeneration of the W crystal can be ascribed to the lateral erosion of W surface layers falling off during the low-energy hydrogen irradiation. Our density functional theory calculations confirm the thermal instability of W atoms in the top layer, especially if H atoms are adsorbed on the surface.
WOS关键词HIGH-FLUX ; DEUTERIUM PLASMA ; POLYCRYSTALLINE TUNGSTEN ; BLISTER FORMATION ; ASDEX UPGRADE ; RETENTION ; EVOLUTION ; DIVERTOR ; EROSION ; METAL
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000372949500001
资助机构National Science Foundation of China(11320101005 ; National Science Foundation of China(11320101005 ; National Science Foundation of China(11320101005 ; National Science Foundation of China(11320101005 ; National Magnetic Confinement Fusion Program(2015GB112001) ; National Magnetic Confinement Fusion Program(2015GB112001) ; National Magnetic Confinement Fusion Program(2015GB112001) ; National Magnetic Confinement Fusion Program(2015GB112001) ; Scientific Research Project of Education Department of Liaoning Province(L2014539) ; Scientific Research Project of Education Department of Liaoning Province(L2014539) ; Scientific Research Project of Education Department of Liaoning Province(L2014539) ; Scientific Research Project of Education Department of Liaoning Province(L2014539) ; Fundamental Research Funds for the Central Universities(DC201502080410) ; Fundamental Research Funds for the Central Universities(DC201502080410) ; Fundamental Research Funds for the Central Universities(DC201502080410) ; Fundamental Research Funds for the Central Universities(DC201502080410) ; 11405023 ; 11405023 ; 11405023 ; 11405023 ; 11405202) ; 11405202) ; 11405202) ; 11405202) ; National Science Foundation of China(11320101005 ; National Science Foundation of China(11320101005 ; National Science Foundation of China(11320101005 ; National Science Foundation of China(11320101005 ; National Magnetic Confinement Fusion Program(2015GB112001) ; National Magnetic Confinement Fusion Program(2015GB112001) ; National Magnetic Confinement Fusion Program(2015GB112001) ; National Magnetic Confinement Fusion Program(2015GB112001) ; Scientific Research Project of Education Department of Liaoning Province(L2014539) ; Scientific Research Project of Education Department of Liaoning Province(L2014539) ; Scientific Research Project of Education Department of Liaoning Province(L2014539) ; Scientific Research Project of Education Department of Liaoning Province(L2014539) ; Fundamental Research Funds for the Central Universities(DC201502080410) ; Fundamental Research Funds for the Central Universities(DC201502080410) ; Fundamental Research Funds for the Central Universities(DC201502080410) ; Fundamental Research Funds for the Central Universities(DC201502080410) ; 11405023 ; 11405023 ; 11405023 ; 11405023 ; 11405202) ; 11405202) ; 11405202) ; 11405202)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/22341]  
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.Dalian Nationalities Univ, Sch Phys & Mat Engn, Dalian 116600, Peoples R China
2.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, POB 1129, Hefei 230031, Peoples R China
3.Deggendorf Inst Technol, Fac Elect Engn & Media Technol, D-94469 Deggendorf, Germany
推荐引用方式
GB/T 7714		 Fan, Hongyu,You, Yuwei,Ni, Weiyuan,et al. Surface degeneration of W crystal irradiated with low-energy hydrogen ions[J]. SCIENTIFIC REPORTS,2016,6(无):1-9.
APA Fan, Hongyu.,You, Yuwei.,Ni, Weiyuan.,Yang, Qi.,Liu, Lu.,...&Liu, Changsong.(2016).Surface degeneration of W crystal irradiated with low-energy hydrogen ions.SCIENTIFIC REPORTS,6(无),1-9.
MLA Fan, Hongyu,et al."Surface degeneration of W crystal irradiated with low-energy hydrogen ions".SCIENTIFIC REPORTS 6.无(2016):1-9.

入库方式： OAI收割

来源：合肥物质科学研究院

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