用于在神光三号原型激光装置上测量流体动力学不稳定性的大视场高分辨率X射线AKB显微镜。

Large-field high-resolution X-ray AKB microscope for measuring hydrodynamic instabilities at the SG-III prototype laser facility.

作者信息

Chen Liang, Yang Pin, Xu Jie, Mu Baozhong, Li Wenjie, Xu Xinye, Li Mingtao, Li Jinbo, Wang Xin, Zhang Xing, Wang Feng, Wang Zhanshan, Yang Dong

机构信息

MOE Key Laboratory of Advanced Micro-Structured Materials, School of Physics Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China.

School of Physics Science and Engineering, Tongji University, Shanghai, 200092, China.

出版信息

Sci Rep. 2024 Nov 16;14(1):28351. doi: 10.1038/s41598-024-78989-w.

DOI:10.1038/s41598-024-78989-w

PMID:39550422

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11569227/

Abstract

X-ray imaging with a large field of view (FOV) and high resolution is extremely important for Rayleigh-Taylor instability measurement with a small amplitude and high spatial frequency in laser inertial confinement fusion. We developed an advanced Kirkpatrick-Baez (AKB) microscope based on the quadratic-aberration theory to realize a large FOV and high resolution. This microscope was assembled and tested in a laboratory, and it was then successfully applied for imaging the hydrodynamic instability of a perturbation target in implosion experiments at the Shenguang-III prototype laser facility. Imaging results demonstrate that the AKB microscope can achieve an optimal resolution of ~ 0.53 μm and ~ 0.40 μm and a spatial resolution of < 1.5 μm within a 300-µm FOV and < 4.5 μm in a 1-mm FOV.

摘要

对于激光惯性约束聚变中具有小振幅和高空间频率的瑞利-泰勒不稳定性测量而言，具有大视场（FOV）和高分辨率的X射线成像极为重要。我们基于二次像差理论开发了一种先进的柯克帕特里克-贝兹（AKB）显微镜，以实现大视场和高分辨率。该显微镜在实验室中进行了组装和测试，随后成功应用于神光-III原型激光装置内爆实验中对扰动靶流体动力学不稳定性的成像。成像结果表明，AKB显微镜在300μm视场内可实现约0.53μm和约0.40μm的最佳分辨率，在1mm视场内空间分辨率小于1.5μm，在1mm视场内小于4.5μm。