MC模拟多种材料γ射线屏蔽性能

MC Simulation of y-Ray Shielding Properties of Various Materials

为满足运维机器人在不同辐射强度场中屏蔽材料的需求,采用MC软件Geant4与屏蔽参数计算程序Phy-X对6种屏蔽材料在窄束和宽束条件下的屏蔽参数进行模拟计算,探究了材料厚度和γ射线强度对积累因子的影响以及6种不同材料的屏蔽性能.结果表明,模拟结果与理论计算结果基本一致,该模型及方法可为不同辐射强度场中屏蔽材料的设计提供有价值的参考.

In order to meet the requirements of shielding materials for operation and maintenance robots in different radiation intensity fields,the MC software Geant4 and the shielding parameter calculation program Phy-X were used to simulate and calculate the shielding parameters of 6 shielding materials under narrow beam and wide beam conditions.The effects of material thickness and gamma ray intensity on buildup factor and shielding properties of different materials were investigated.The results show that the simulation results are basically consistent with the theoretical calculation results,and the simulation methods and models provide valuable references for the design of shielding materials in different radiation intensity fields.