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Noble gas diffusion mechanism in lunar soil simulant grains: Results from He-4(+) implantation and extraction experiments
Fu, Xiaohui1,2; Zou, Yongliao1; Zheng, Yongchun1; He, Huaiyu3; Ouyang, Ziyuan1,4
2011-10-01
发表期刊JOURNAL OF EARTH SCIENCE
卷号22期号:5页码:566-577
摘要Experiments on ion implantation were performed in order to better characterize diffusion of noble gases in lunar soil. He-4(+) at 50 keV with 5x10(16) ions/cm(2) was implanted into lunar simulants and crystal ilmenite. Helium in the samples was released by stepwise heating experiments. Based on the data, we calculated the helium diffusion coefficient and activation energy. Lunar simulants display similar He-4 release patterns in curve shape as lunar soil, but release temperatures are a little lower. This is probably a consequence of long-term diffusion after implantation in lunar soil grains. Variation of activation energy was identified in the Arrhenius plots of lunar simulants and Panzhihua (ae"EuroaeeeS +/-) ilmenite. We conclude that noble gas release in lunar soil cannot be described as simple thermally activated volume diffusion. Variation of diffusion parameters could be attributed to physical transformation during high temperature. Radiation damage probably impedes helium diffusion. However, bubble radius growth during heating does not correlate with activation energy variation. Activation energy of Panzhihua ilmenite is 57.935 kJ/mol. The experimental results confirm that ilmenite is more retentive for noble gas than other lunar materials.
关键词Noble Gas Solar Wind Diffusion Lunar Soil The Moon
DOI10.1007/s12583-011-0207-4
收录类别SCI
语种英语
WOS记录号WOS:000295418100002
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文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/7874
专题月球与深空探测研究部
作者单位1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
4.Chinese Acad Sci, Inst Geochem, Guiyang 550002, Peoples R China
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Fu, Xiaohui,Zou, Yongliao,Zheng, Yongchun,et al. Noble gas diffusion mechanism in lunar soil simulant grains: Results from He-4(+) implantation and extraction experiments[J]. JOURNAL OF EARTH SCIENCE,2011,22(5):566-577.
APA Fu, Xiaohui,Zou, Yongliao,Zheng, Yongchun,He, Huaiyu,&Ouyang, Ziyuan.(2011).Noble gas diffusion mechanism in lunar soil simulant grains: Results from He-4(+) implantation and extraction experiments.JOURNAL OF EARTH SCIENCE,22(5),566-577.
MLA Fu, Xiaohui,et al."Noble gas diffusion mechanism in lunar soil simulant grains: Results from He-4(+) implantation and extraction experiments".JOURNAL OF EARTH SCIENCE 22.5(2011):566-577.
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