本文采用MCNP软件对不同探测距离情况下土壤中铀系和钍系天然γ谱进行了模拟计算,通过对模拟结果分析,得到探测距离天然γ谱的影响以及变化特征。
The natural gamma spectrum of uranium-series and thorium-series in soils with various height of detector is estimated through MCNP simulation. The results from MCNP simulation show the the effect of height of detector on natural gamma spectrum and the variation characteristics.