Inertial confinement fusion research demands unprecedented high standards for neutron diagnostic technology. As a key diagnostic tool for obtaining the compression morphology of implosion capsules, the performance of neutron imaging systems directly affects the reliability of physical parameter extraction. The system spatially modulates neutron beams through coded apertures, records encoded projections, and reconstructs the compression morphology of implosion capsules using reconstruction algorithms. This report focuses on three directions: system spatial resolution, experimental image quality, and the development of coded reconstruction algorithms, systematically introducing the research progress achieved in these areas. The related work has effectively overcome technical bottlenecks in spatial resolution, image signal-to-noise ratio, and reconstruction accuracy, providing reliable support for obtaining high-quality neutron imaging images.
 

Neutron penumbral imaging, Spatial resolution, Image contrast, Signal-to-noise ratio