Development of a polar-view Kirkpatrick-Baez X-ray microscope for implosion asymmetry studies

作者：Yaran Li, Jianjun Dong, Qing Xie, Jie Xu, Liu Hanwei, Wenjie Li, Xin Wang, Baozhong Mu, Zhanshan Wang, Fansheng Chen, Kuan Ren, Xing Zhang, Yudong Pu, Shenye Liu, Feng Wang, Shaoen Jiang, Yongkun Ding · 发表于：Optics Express · 年份：2019 · DOI：10.1364/oe.27.008348 · 被引用次数：16 · 研究领域：Advanced X-ray Imaging Techniques、Laser-Plasma Interactions and Diagnostics、X-ray Spectroscopy and Fluorescence Analysis

The development of a polar-view Kirkpatrick-Baez microscope, fielded in the upper polar zone of the Shenguang-III laser fusion facility, is presented. With this microscope, the resolving power of polar-direction X-ray imaging diagnostics is improved, to the 3 ~5 μm scale. The microscope is designed for implosion asymmetry studies, with response energy points at 1.2 keV, 3.5 keV, and 8 keV. A biperiodic multilayer scheme is adopted to accommodate multiple implosion stages. We present the overall optical system design, target aiming scheme, characteristic composite imaging diagnostic experiments and initial results. The inertial-driven quasi-one-dimensional spherical implosions were observed from orthogonal directions with a convergence ratio of ~14.4. Fine features of the stagnating hot spot core are also resolved.