强激光与粒子束2016，Vol.28Issue(11)：112007-1-112007-7,7.DOI:10.11884/HPLPB201628.160170
脉冲 CO2激光烧蚀锡靶等离子体的数值模拟
Numerical simulation of pulsed CO2 laser produced tin plasma
摘要
Abstract
With the help of 1-D radiation hydrodynamic code MULTI,we simulated the ablation process of a pulsed CO 2 la-ser irradiation on a tin planar target.We studied the influence of pulse duration,peak power intensity and initial target density on electron temperature and density distribution at different time.Also,the optimum pulse duration for 13.5 nm extreme-ultraviolet (EUV)emission was obtained by statistical analysis.It is found that long pulse duration ,for example,100-200 ns,is better for EUV emission.In this paper,the mechanism is discussed combining electron temperature and density distribution.Laser energy is effectively absorbed in the critical density area,while absorption of laser energy and EUV in the underdense corona can be negli-gible.Using a long CO 2 laser pulse to prolong the EUV emission time can improve conversion efficiency effectively.Meanwhile, the initial target density has little influence on tin plasma parameters.关键词
MULTI/CO 2 激光/等离子体/极紫外/脉冲宽度Key words
MULTI/CO 2 laser/plasma/extreme-ultraviolet/pulse duration分类
数理科学引用本文复制引用
姚黎为,王新兵,刘璐宁,左都罗..脉冲 CO2激光烧蚀锡靶等离子体的数值模拟[J].强激光与粒子束,2016,28(11):112007-1-112007-7,7.基金项目
中央高校基本科研业务费资助项目(HUST2016YXMS028) （HUST2016YXMS028）
