Firstly, the model of neutron pinhole penumbral imaging system was built and simulated with MCNP program, then the PSF was obtained.

• 首先，建立了中子针孔半影成像系统模型，利用蒙特卡罗(MCNP)程序对该系统的成像进行模拟，得到该系统模型的点扩散函数(PSF)；