Noble Gas Diffusion Mechanism in Lunar Soil Simulant Grains: Results from 4He+ Implantation and Extraction Experiments
- Received Date: 2018-07-15
- Rev Recd Date: 2018-07-15
- Publish Date: 2018-07-15
Abstract: Experiments on ion implantation were performed in order to better characterize diffusion of noble gases in lunar soil. 4He+ at 50 keV with 5×1016 ions/cm2 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 4He 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 (攀枝花) ilmenite...
|Citation:||付晓辉, 邹永廖, 郑永春, 贺怀宇, 欧阳自远. Noble Gas Diffusion Mechanism in Lunar Soil Simulant Grains: Results from 4He+ Implantation and Extraction Experiments. Journal of Earth Science, 2011, 22(5). doi: 10.1007/s12583-011-0207-4|