溴化镧探测器在1–10MeV能区的能量刻度  

Energy calibration for LaBr_3(Ce) scintillator detector in the region of 1–10MeV

作　　者：章剑华[1,2] 储诚胜[2] 曾军[2] 丁阁[2] 向清沛[2] 刘钊[2] 杨朝文[1] 

机构地区：[1]四川大学物理科学与技术学院辐射物理及技术教育部重点实验室成都610064 [2]中国工程物理研究院核物理与化学研究所绵阳621900

出　　处：《核技术》2013年第3期27-30,共4页Nuclear Techniques

基　　金：NSAF联合基金(11076020)资助

摘　　要：溴化镧(铈)(LaBr3(Ce))闪烁探测器具有较高的能量分辨和较高的探测效率,在中子质询非破坏性检测爆炸物、违禁品及地雷等研究领域发挥了重要作用。本文提出了中子场中LaBr3(Ce)探测器宽能范围的刻度方法:分别测量中子诱发NH4Cl和三聚氰胺(C3H6N6)的瞬发能谱,对比后确定了各核素的特征峰,获得了1–10MeV能区的能量刻度曲线。采用二次多项式及三次多项式拟合,能较好地区分被测特征核素。Background： LaBr3（Ce） detector has played an important role in detecting explosive, contraband and landmine because of its high γ detection efficiency and good energy resolution etc. Purpose： To calibrate detector in wide energy region. Methods： The gamma spectra of NH4C1 and C3H6N6 induced by 252Cf neutron source were measured. Results： Comparing their gamma spectra, characteristic gamma lines can be located and the energy calibration curve was obtained. Conclusions： Radio nuclides can be identified by the calibration curve fitted with quadratic or cubic polynomial.

关 键 词：LaBr3(Ce) 闪烁探测器 中子场 谱 能量刻度 

分 类 号：TL812.1[核科学技术—核技术及应用] O582[理学—物理]