NaI(Tl)闪烁谱仪峰总比的蒙特卡罗计算

Monte Carlo calculation of the photofraction R(E) of NaI(Tl) scintillation spectrometer

简单分析 Na I(Tl)闪烁谱仪探测原理的基础上 ,运用蒙特卡罗程序 MCNP计算了该谱仪对不同能量点源的峰总比 (或光分数 ) ,并同实验结果做了对比 ,解释了计算结果比实验值偏高的原因。

In this paper, the detecting principle of NaI(Tl) scintillation spectrometer is briefly analysed and the photofraction of the spectrometer to various point sources is calculated by using the MCNP code. Besides, comparison of the calculated results with experiment data available is made, and the reason why the calculated results are usually higher is also given.