A semi-classical model for the charge exchange and energy loss of slow highly charged ions in ultrathin materials  

作　　者：Xun Guo Yanjun Fu Xitong Zhang Xinwei Wang Yan Chen Jianming Xue 

机构地区：[1]State Key Laboratory of Nuclear Physics and Technology,School of Physics,Peking University,Beijing 100871,People’s Republic of China [2]CAPT,HEDPS and IFSA Collaborative Innovation Center of MoE,College of Engineering,Peking University,Beijing 100871,People’s Republic of China [3]School of Advanced Materials,Shenzhen Graduate School,Peking University,Shenzhen 518055,People’s Republic of China [4]New Energy Research Institute,School of Environment and Energy,South China University of Technology,Guangzhou 510006,People’s Republic of China

出　　处：《Matter and Radiation at Extremes》2019年第5期1-6,共6页极端条件下的物质与辐射（英文）

基　　金：supported by the NSFC(Grant No.11705010);the NSAF(Grant No.U1230111),the IAEA(CRP No.F11020 and Contract No.21063);the China Postdoctoral Science Foundation(Grant No.2019M650351)。

摘　　要：We present a simple and reliable method,based on the over-barrier model and Lindhard’s formula,to calculate the energy loss,charge transfer,and normalized intensity of highly charged ions penetrating through 2D ultrathin materials,including graphene and carbon nanomembranes.According to our results,the interaction between the ions and the 2D material can be simplified as an equivalent two-body collision,and we find that full consideration of the charge exchange effect is key to understanding the mechanism of ion energy deposition in an ultrathin target.Not only can this semiclassical model be used to evaluate the ion irradiation effect to a very good level of accuracy,but it also provides important guidance for tailoring the properties of 2D materials using ion beams.

关 键 词：CHARGE EXCHANGE energy 

分 类 号：O57[理学—粒子物理与原子核物理]