摘要
介绍了γ射线辐射场能量分布的蒙特卡罗模拟计算方法;以立方体水为介质模型,利用EGS4软件模拟了γ光子在三维水模体中的输运过程,并对微型源125Ⅰ在水模体中的辐射场能量分布进行了模拟计算;研究了125I源的排列方式、几何特性以及介质的均匀性对辐射场分布的影响.
The Monte Carlo simulation method for the energy distribution of the γ-ray radiation field is introduced.The model of cube water medium is used.The transfer process of γphoton in 3-D water medium model is simulated by using EGS4 calculation software.The energy distribution for radiation field of minimal source 125Ⅰ in water medium model is simulated.The affection of the arrangement of radiation source,the geometry feature,the uniformity of the medium in the energy distribution of 125Ⅰ radiation field is studied.The research is useful to clinical medicine.
出处
《西南师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2011年第2期52-57,共6页
Journal of Southwest China Normal University(Natural Science Edition)
基金
"材料物理学术创新团队"北京市属高等学校人才强教计划资助项目(PHR201007122)
北京市自然科学基金资助项目(2102014)
关键词
蒙特卡罗方法
辐射场
模拟计算
Monte Carlo method
radiation field
simulation calculation
