冷中子荧光屏光输出图像仿真计算

Simulation of the Light Output Image of Cold Neutron Converter

冷中子照相是一种新型的中子照相技术,国内对冷中子照相技术的研究尚处于起步阶段。冷中子荧光屏是冷中子照相的关键组件,对冷中子荧光屏的仿真方法进行了研究,分析了冷中子与荧光屏的作用机制,建立了仿真计算模型,得到了荧光屏的点扩散函数(PSF),最终实现了设定样品下荧光屏输出光强分布图像的仿真计算。

Cold neutron radiography （CNR） is a new neutron radiography technique. And the research of CNR is just started in China. The cold neutron converter is a key subassembly of the CNR facility. The simulate method of cold neutron converters is studied. The principle of the interaction between cold neu- trons and converters is analyzed. The calculate model of the simulation is set up and the point spread function （PSF） of the converter is resolved. At last, the simulation of the light output image of cold neutron converters under the particular sample has been realized.