溴化镧探测器效率刻度与晶体表征  

The Full-energy Peak Efficiency and Crystal Characterization for the LaBr_3 Scintillation Detector

作　　者：邓中华[1,2] 王媛 赵永生[1,2] 钟丁生 DENG Zhong-hua;WANG Yuan;ZHAO Yong-sheng;ZHONG Ding-sheng(The Engineering and Technical College of Chengdu University of Technology,Leshan 614000,Sichuan;Southwestern Institute of Physics,Chengdu 610041,Siehuan;Leshan Vocational and Technical College,Leshan 614000,Siehuan)

机构地区：[1]成都理工大学工程技术学院,四川乐山614000 [2]核工业西南物理研究院,四川成都610041 [3]乐山职业技术学院,四川乐山614000

出　　处：《核电子学与探测技术》2018年第2期250-253,共4页Nuclear Electronics & Detection Technology

基　　金：成都理工大学工程技术学院青年基金(编号:C122016011)

摘　　要：利用三种不同的放射性标准点源对溴化镧探测器的能量与道址关系曲线、能量与半高宽、全能峰探测效率曲线进行了实验研究;然后利用蒙特卡罗方法和实验探测效率曲线对溴化镧探测器的尺寸进行了表征,建立计算模型。根据计算模型,模拟计算在不同位置、能量区间在100~1 500 keV范围内的γ射线的全能峰探测效率。模拟结果与实验结果的相对偏差绝大部分处于±5%以内,说明计算模型是准确可靠的。In order to study the energy resolution,energy linearity and full-energy peak efficiency for the LaBr3 scintillation detector,the experiments have been performed by using three kinds of radioactive sources.And then the exact size of LaBr3 scintillation detector is taken by using MCNPX5 Monte Carlo code.A calculational model have been set up for the LaBr3 scintillation detector.The calculational results show that,for X,γ rays in the energy range 100～1 500 keV in different positions,the relativedeviations of full-energy peak efficiency between computational and measured results were within ±5% which shows that the calculation model is accurate and reliable.

关 键 词：溴化镧探测器 效率刻度 蒙特卡罗 晶体调整 

分 类 号：TL81[核科学技术—核技术及应用]