物理学报2012，Vol.61Issue(5)：319-325,7.
载能氢同位素原子与石墨（001）面碰撞的分子动力学研究
Molecular dynamics simulation of energetic hydrogen isotopes bombarding the crystalline graphite（001）
摘要
Abstract
Molecular dynamics simulation is applied to the investigation of the isotopic effects during a hydrogen isotope atom bombarding the crystalline graphite containing four graphene sheets. Both Brenner＇s reactive empirical bond order potential and Ito＇s interlayer intermolecular potential are adopted to represent ＂ABAB＂ stacking of graphite. The simulation results reveal that the mass of the incident species has a big influence on the absorption on and the reflection from the upside graphite surface, the peaks of which shift toward higher end side of incident energy as the mass increases. The absorption coefficient of the incident tritium is large, compared with that of the incident either hydrogen or deuterium. To penetrate the four- sheet graphite at some striking locations, deuterium and tritium need more kinetic energy. It is found that both the mass and the incident energy of the incident species affect the energy transfer to background substrate. These results would be important for understanding the tritium retention occurring in fusion devices.关键词
分子动力学方法/H同位素/石墨Key words
molecular dynamics simulation method/hydrogen isotope effect/graphite分类
数理科学引用本文复制引用
孙继忠,张治海,刘升光,王德真..载能氢同位素原子与石墨（001）面碰撞的分子动力学研究[J].物理学报,2012,61(5):319-325,7.基金项目
国家重点基础研究发展计划（批准号：2008CB717801,2010CB832901）和中央高校基本科研业务费专项资金资助（DUT10ZD111）资助的课题. （）
