TH-PPL CT防护铅罐屏蔽效果的模拟与研究

The Simulation and Study on the Protection Lead tin of TH-PPL CT

摘要: 本文利用Geant 4模拟了FD3013数字γ辐射仪探测器探测晶体,对¹³⁷Cs(0.661MeV)的γ射线的探测效率,和TH-PPLCT教学仪防护铅罐对¹³⁷Cs源的防护效果,并建立了简易人体模型,仿真计算了人体吸收剂量,结果显示防护铅罐屏蔽后的辐射剂量在可接受的水平内。

Abstract: This paper simulates the detection efficiency of the detector crystal of FD3013 digital gamma ray radiation instrument to ¹³⁷Cs gamma source using Monte Carlo simulation tool kit Geant 4.The protection lead tin's protective effect of TH-PPL CT teaching instrument is also studied.To simulate the trunk dosage,a simple trunk model is established,the simulation results show that the protective effect is acceptable.