Development of neutron resonance imaging

研制了一种基于气体电子倍增器能量滤波成像的超热中子照相机。超热中子成像可以通过使用共振滤波器和热中子吸收器实现，而不需要对中子进行飞行时间检测。该技术适用于基于紧凑加速器的中子源。利用银共振滤波器和B4C片作为热中子吸收剂，演示了超热中子成像。基于相机的数值计算模型，对超热中子编码孔径成像进行了研究。

An epithermal neutron camera based on energy-filtered imaging with gas electron multipliers was developed. Epithermal neutron imaging is achievable without time-of-flight detection of neutrons by using a resonance filter and a thermal neutron absorber. This technique is applicable to compact accelerator-based neutron sources. Epithermal neutron imaging was demonstrated using the Ag resonance filter and the B4C sheet as a thermal neutron absorber . Coded aperture imaging for epithermal neutron was also investigated based on numerical calculation model of the camera.