Single-neutron super-resolution imaging based on neutron capture event detection and reconstruction
摘要
Neutron capture event imaging is a novel technique that has the potential to substantially enhance the resolution of existing imaging systems. This study provides a measurement method for neutron capture event distribution along with multiple reconstruction methods for super-resolution imaging. The proposed technology reduces the point-spread function of an imaging system through single-neutron detection and event reconstruction, thereby significantly improving imaging resolution. A single-neutron detection experiment was conducted using a highly practical and efficient 6LiF-ZnS scintillation screen of a cold neutron imaging device in the research reactor. In milliseconds of exposure time, a large number of weak light clusters and their distribution in the scintillation screen were recorded frame by frame, to complete single-neutron detection. Several reconstruction algorithms were proposed for the calculations. The location of neutron capture was calculated using several processing methods such as noise removal, filtering, spot segmentation, contour analysis, and local positioning. The proposed algorithm achieved a higher imaging resolution and faster reconstruction speed, and single-neutron super-resolution imaging was realized by combining single-neutron detection experiments and reconstruction calculations. The results show that the resolution of the