Ar^(q+)(q=0-12)离子掠射到单晶铜表面的能损谱（英文）  

Energy loss spectra of Ar^(q+)(q=0-12) ions in grazing incidence on single-crystal copper surface

作　　者：罗先文[1] LuoXianwen(Key Laboratory of Pulsed Power,596 S&T Campus,CAEP,Chengdu 610200,China)

机构地区：[1]中国工程物理研究院,银河596科技园,脉冲功率科学与技术重点实验室,成都610200

出　　处：《强激光与粒子束》2018年第5期96-103,共8页High Power Laser and Particle Beams

基　　金：National Natural Science Foundation of China(11405166)

摘　　要：采用蒙特卡罗模拟方法,对低速高电荷态Ar^(q+)离子掠射到单晶铜表面时的能损谱与表面结构的依赖关系进行研究。在能损计算中,包含了四种可能的能损机制。对于Ar原子沿着晶列方向掠射时,发现能损谱为一两峰结构,其中在能损比较大的区间新出现一个明显的小峰结构。通过研究Ar^(q+)以不同条件掠射到表面的能损,对观察到的沟道效应进行论述。能损谱的计算结果与实验结果吻合得比较好。By performing a Monte Carlo simulation,energy spectra as a function of surface structure for slow highly charged Ar q+ions in grazing incidence on a single-crystal copper surface were studied.Four possible mechanisms were taken into account in energy loss calculation.The energy loss spectrum consisting of two peak structure with an obvious small peak at higher energy loss side was found for Ar atoms grazing along low-index direction.The channeling effect observed in the energy loss of Ar q+ions grazing from surface was discussed.The calculated energy loss spectra agree reasonably well with those of experiment.

关 键 词：蒙特卡罗 能损 高电荷态离子 掠射 

分 类 号：O562[理学—原子与分子物理]