摘要
根据γ光子与物质的作用机理,对γ光子在介质中反应轨迹进行抽样跟踪,以此建立基于蒙特卡罗方法的粒子输运数学模型。利用虚拟仪器开发工具LabWindows/CVI编制软件模拟γ光子在介质中的输运过程,根据粒子出射率及对应的吸收介质厚度,计算介质对窄束γ射线的质量衰减系数。结果显示用蒙特卡罗方法计算介质对窄束γ射线的质量衰减系数是可行的。
The mathematics model of particle transportation was built, based on the sample of the impaction trace of the narrow beam γ photon in the medium 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 γphoton in the medium and record the emission probability of γ photon and its corresponding thickness of medium with LabWindows/CVI, which was used to calculate narrow beam γ ray mass attenuation coefficients of absorbing medium. The results show that it is feasible for Monte Carlo method to calculate narrow beam γ ray mass attenuation coefficients of absorbing medium.
出处
《核电子学与探测技术》
CAS
CSCD
北大核心
2007年第2期415-417,共3页
Nuclear Electronics & Detection Technology
基金
国家自然基金资助项目(40374051)
