X射线康普顿散射成像实验装置研发

该文围绕高性能X射线康普顿散射成像需求,开展了大视场、高分辨率Schmidt物镜的研发及成像实验研究。基于光学设计,研制了分离式的Schmidt物镜,解决了物镜在子午方向和弧矢方向存在分辨率差异的问题,提高了物镜的成像分辨率。开展了X射线康普顿散射成像实验研究,检验了物镜的灵敏度和分辨率。实验结果表明,Schmidt物镜在120 mm视场内的分辨率约为3 mm,对置于1 mm钢板后的PMMA探测灵敏度约为10 g,实现了高分辨率、高灵敏度的探测。

Development of experimental device for X-ray Compton scattering imaging

Focusing on the requirements of high-performance X-ray Compton scattering imaging, the research and development of large field of view and high-resolution Schmidt objective lens and imaging experimental research are carried out in this paper. Based on the optical design, a separate Schmidt objective is developed, which solves the problem of the resolution difference between the objective lens in the meridian direction and the sagittal direction and improves the imaging resolution of the objective lens. The X-ray Compton scattering imaging experiment was carried out, and the sensitivity and resolution of the objective lens are tested. The experimental results show that the Schmidt objective has a resolution of about 3 mm in the field of view of 120 mm, and the detection sensitivity of PMMA placed behind a 1 mm steel plate is about 10 g, which realizes high resolution and high sensitivity detection.