基于Kirkpatrick-Baez显微镜的芯部自发光成像诊断不确定度评估  

Uncertainty evaluate of core symmetry which observed by Kirkpatrick-Baez microscope

作　　者：蒋炜 董云松[2] 张兴[2] 尹传盛[2] 孙传奎[2] 董建军 尚万里[2] Jiang Wei;Dong Yunsong;Zhang Xing;Yin Chuansheng;Sun Chuankui;Dong Jianjun;Shang Wanli(University of Science and Technology of China,Hefei 230026,China;Laser Fusion Research Center,CAEP,Mianyang 621900,China)

机构地区：[1]中国科学技术大学,合肥230026 [2]中国工程物理研究院激光聚变研究中心,四川绵阳621900

出　　处：《强激光与粒子束》2023年第3期39-43,共5页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(12075219);中物院创新基金项目(CX20210019)。

摘　　要：具备高分辨能力(约5μm)的Kirkpatrick-Baez(KB)显微镜大幅提升了芯部自发光诊断图像的空间分辨率,准确评估诊断不确定度有利于开展内爆对称性调谐,提高内爆性能。建立了针对KB显微镜的在线不确定度评估方法,详细分析了其在线背光照相实验中的图像分辨率和噪声,并对内爆物理实验中的芯部自发光数据进行了不确定度评估。结果显示,芯部自发光P2不确定度为6%,P4不对称性的不确定度为8%,满足了现阶段内爆物理实验的诊断需求。The core emission was observed by Kirkpatrick-Baez(KB)microscope with about 5μm space resolution.It is important to evaluate the uncertainty of core image thus to tune the implosion asymmetry.This article evaluates the spatial resolution and SNR of the backlight image got by KB microscope in the experiment,and calculates the uncertainty for the Legendre moments of core emission.The results show that the uncertainty of P2 is about 6%that of and P4 is about 8%.

关 键 词：ICF 内爆不对称性 KB显微镜 不确定度 

分 类 号：O532.13[理学—等离子体物理]