Open AccessDevelopment of high resolution dual-energy KBA microscope with large field of view for RT-instability diagnostics at SG-III facility
Author(s) -
Qing Xie,
Baozhong Mu,
Yaran Li,
Xin Wang,
Qiushi Huang,
Zhanshan Wang,
Zhurong Cao,
Jianjun Dong,
Shenye Liu,
Yongkun Ding
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.002608
Subject(s) - monochromatic color , optics , physics , microscope , image resolution , laser , field of view , resolution (logic) , computer science , artificial intelligence
High resolution X-ray diagnosis is a significant method for obtaining ablation-front and trajectory measurements targeting Rayleigh-Taylor (RT)-instability growth in initial confinement fusion (ICF) experiments. In this paper, a novel Kirkpatrick-Baez-type structure, as a kind of essential X-ray micro-imaging apparatus, has been developed that realizes a large field of view (FOV) and images with high resolution and energy response. Zoned multilayer coating technology is applied to the Kirkpatrick-Baez mirrors to transmit two specific quasi-monochromatic light through the same mirror and enables a compact dual-channel structure. This microscope has been assembled in the laboratory and later implemented at the Chinese SG-III laser facility. The characterization results show that this imaging system can achieve a good spatial resolution of 5 µm in a large FOV of 500 µm, while maintaining a strong monochromatic performance with bandwidth of 0.5 keV at 2.5 keV and 4.3 keV respectively.