摘要
在惯性约束聚变研究中获得滞止阶段内爆靶丸芯部状态图像具有极其重要的意义和价值。高功率密度拍瓦装置打击高Z金属靶产生轫致X射线(>70keV)光源,并利用康普顿背光照相获取该图像是重要的诊断方法。基于神光Ⅲ主机装置48×3kJ的驱动能力开展相关背光照相性能研究。结合国外相关实验结果和数值模拟计算方法分别从光源亮度以及内爆过程产生的噪声分析入手,从理论上设计了整套康普顿成像系统。结果表明在神光Ⅲ主机上利用康普顿背光照相可以获得高质量的内爆压缩靶丸滞止阶段图像。
The slate of hot-core in stagnation phase is very important and valuable in inertial confinement fusion. High energy X ray （〉70 keV） backlight imaging is the most important method to acquire stagnation phase image. The high energy X-ray is produced by high power petawatt laser facility interaction with high Z metal target. This article was based on Shenguang-[II la- ser facility with 48）〈 3 kJ. Our work analyzed X ray source flux and implosion noise and proposed a whole design in high-energy X-ray backlight image system. The result indicates that high energy X ray backlight image is able to obtain stagnation phase image in Shenguang Ⅲ laser facility.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2013年第12期3127-3130,共4页
High Power Laser and Particle Beams
关键词
惯性约束聚变
内爆物理
高能X射线背光
拍瓦激光装置
inertial confinement fusion
implosion physics
high-energy X-ray backlight
petawatl-laser facility
作者简介
晏骥（1983-），男，博士，从事激光X光源、相衬成像及内爆物理研究；lucifer@mail．ustc．edu．cn。
