论文部分内容阅读
目的:采用蒙特卡罗方法计算γ射线在水体膜中的吸收剂量.方法:根据γ光子与物质作用的原理,对γ光子与水的每一次相互作用进行抽样,然后以此建立粒子运输的数字模型,并编制计算机程序,模拟γ光子在水体模中运输过程,同时记录每次相互作用的能量沉积,并转化为吸收剂量.结果:通过运行计算机程序,计算出两组代表意义的数据,并检验了算法的准确性.结论:用蒙特卡罗方法计算γ射线在水体模中的吸收剂量是可行的.“,”Objective:To calculate the absorbed dose of the γ-ray in the water phantom by Monte Carlo method.Methods:The mathematics model of the particle transportation was built ,based on the sample of the interaction between γ photon and water according to the principle of interaction between γ photon and the material, and a computer procedure was organized to simulate the process of transportation for the γ photon in the water phantom and record the energy deposition in the interaction each time, which was converted to the absorbed dose in the end.Results:Two groups of representative data was worked out to check the accuracy of this method by running the computer program.Conclusions:It is feasible for Monte Carlo to calculate the absorbed dose of the γ-ray in the water phantom.