75 / 2023-04-12 21:03:05

Research on X-ray edge-enhancement spiral zone plates coded imaging technique

Spiral zone plate; Edge-enhancement imaging; Laser plasma

辐射和流体力学 > 辐射和流体力学-海报

X-ray imaging is an important diagnostic tool in the fields of laser plasma and high energy density physics. However, X-ray imaging techniques are aimed to obtain the intensity distribution image of the object to be measured, and there is no edge-enhancement feature. The development of X-ray edge-enhancement imaging technique is more conducive to improving the image quality of the boundary area and highlighting the details of the object, which has important values of research and application. To this end, we have carried out the research on X-ray edge-enhancement coded imaging technology based on binary spiral zone plates. The numerical program based on angular spectrum theory is developed, and the influence of coded aperture structure is discussed; A series of visible light and X-ray spiral zone plates have been fabricated by different processing methods; Based on these spiral zone plates, the corresponding edge-enhancement imaging experiments were carried out; Through these experiments, the edge-enhancement images of the visible light target object and the hard X-ray target object are obtained, and the experimental results are in agreements with the theoretical expectations.