【摘要】 屏蔽防护在反应堆、一般放射性测量以及低水平放射性测量中都起着极为重要的作用。运用蒙特卡罗MCNP4C程序,模拟了几种常用的屏蔽材料对γ射线屏蔽情况。通过对模拟结果的分析,给出这些屏蔽材料对γ射线的衰减系数、有效衰减系数,并对能量发散情况进行定量分析,同时补充了一些辐射防护手册中没有提供而在实际工作中有用的屏蔽材料的屏蔽数据,以便于设计出有效的γ射线屏蔽防护。更多还原

【Abstract】 It simulates several commonly materials’shielding situation of theγ-ray,using the MCNP-4C.By analyzing the simulation results,it gives out the quantitative analysis of the transmission ratio and the effective attenuation coefficient.At the same time,for making people to design an effectiveγ- ray shielding expediently, it add some shielding data of the shielding material which the radiation protection manual does not provide.更多还原