塑料闪烁光纤在γ光子下的康普顿能谱能量分辨率模拟分析  

Simulation of energy resolution of Compton spectrum of 0.8-6 MeV gamma rays in plastic scintillation fibers

作　　者：马庆力[1] 李世平[2] 唐世彪[2] 许士敏[1] 党双平[1] 

机构地区：[1]电子工程学院电子系,合肥230038 [2]中国科学技术大学近代物理系,合肥230026

出　　处：《核技术》2012年第3期193-196,共4页Nuclear Techniques

基　　金：国家自然科学基金(60602065;11105143);安徽省自然科学基金(11040606M148);中国博士后科学基金资助

摘　　要：利用Geant4软件模拟了塑料闪烁光纤在中能γ光子(0.8–6 MeV)入射情况下的康普顿能谱,讨论了能量分辨率与半径的变化关系,分析了γ光子在闪烁光纤间串扰对能量分辨率的影响。结果表明,选择合适的光纤半径,能得到较好的康普顿能谱效应,半径为15–35 mm时,最佳的能量分辨率可达8.7%。The Compton spectrum for 0.8-6 MeV y-rays in plastic scintillation fibers was studied by using Geant4.7.0. The relationship between energy resolution and fiber radius was discussed. The cross talks between fibers were also studied by using a simple model. The results show that for appropriate radius, a better Compton spectrum can be obtained. The best energy resolution can achieve 8.7% with the radius of 15-35 mm.

关 键 词：Geant4软件 塑料闪烁光纤 能量分辨率 

分 类 号：TN25[电子电信—物理电子学] O571.33[理学—粒子物理与原子核物理]