The radiation scattering is studied by MCNP simulation.The distributions of energy deposition in CsI: Tl crystal under different energy spectrum and depth of screen are given.

• 用MCNP方法研究了转换屏内的辐射输运，给出了不同入射光子能谱和转换屏厚度下转换屏内能量沉积随半径的变化关系。