137Csγ能谱的蒙特卡罗模拟

次数可以使得能谱更接近实际情况。能谱低能端的模拟不是很理想,考虑增加运算次数和减小粒子的截断能量来改善能谱形状。在分析过程中采用的数据较少,每一部分只有三组数据,进一步考虑增加模拟的组数。附录:MCNP5输入文件3*3inchNAI(Tl)-pointsource11-13.6(1-2-19):(2-918-19):(9-1317-20):(13-14-20)$PB22-3.675-6-15$NaI33-2.7(3-4-17):(4-1116-17):(11-12-17)$Al40(2-21-18):(21-917-18):(4-5-16):(5-1115-16):(12-13-17):(1-919-20)$air54-1.186-11-15$plastic60-1:14:2073-2.7(-321-17)$Al1PY02PY3$3cmPb3PY19.5$15.5cmair4PY20.2$0.7cmAl5PY20.9$0.7cmAir6PY28.52$7.62cmNaI7PY29.52$1cmlighttrans8PY39.52$10cm9PY40.2$10PY40.411PY52.712PY52.913PY59.914PY64.915CY3.8116CY4.717CY5.018CY9.019CY14.020CY15.021PY14.5$5cmAlMODEPEIMP:P1111101M1820001$PB-13.6M2110001530001$NAI-3.67M3130271$Al-2.7M41001-0.08066012-0.59988016-0.3196$PLASTIC-1.18SDEFERG=0.661661POS=0140F8:P2E80500i1.2FT8GEB0.016880.061650.34599ELPT:E10.011111NPS10000000PRINT