溴化镧/氯化镧电流型闪烁探测器性能研究  

Performance of LaBr_3 ∶Ce/LaCl_3 ∶Ce Scintillation Detector in Current Mode

作　　者：卢毅[1] 宋朝晖[1] 谭新建[1] 赵晓川[1] 张子川[1] 李刚[1] 张侃[1] 

机构地区：[1]西北核技术研究所辐射探测科学研究中心,陕西西安710024

出　　处：《原子能科学技术》2014年第1期158-161,共4页Atomic Energy Science and Technology

基　　金：国家自然科学基金资助项目(11205122)

摘　　要：掺铈溴化镧(LaBr3∶Ce)及掺铈氯化镧(LaCl3∶Ce)是近年来出现的性能优良的新型无机闪烁体。本文对LaBr3∶Ce和LaCl3∶Ce电流型闪烁探测器的性能进行了研究,计算了探测器的相对灵敏度随入射γ射线能量的变化曲线,测定了其对137 Cs和60 Co的灵敏度,并检验了其γ/n分辨本领。结果表明,溴化镧和氯化镧探测器具有较高的γ灵敏度响应和γ/n分辨,适于测量低强度快脉冲中子、γ混合场中的γ射线束。LaBr3 ∶Ce and LaCl3 ∶Ce which exhibit superior ability in detection of γ-rays have been studied extensively in recent years .The properties for both of the LaBr3 ∶Ce scintillation detector and the LaCl3 ∶Ce scintillation detector were studied .The relative sensitivities to incident γ-rays of different energy were obtained by calculation .The sensitivities of detectors to the 137 Cs and 60 Co sources were measured and the sensitivity ratio of γ-ray to neutron was inspected .The result shows that the LaBr3 ∶Ce and LaCl3 ∶Ce scintillation detectors with high sensitivities to γ-rays and good γ/n discrimination are very appropriate for measurement in the mixed field by neutrons and γ-rays .

关 键 词：溴化镧闪烁体 氯化镧闪烁体 γ能量响应 γ n分辨 

分 类 号：TL812[核科学技术—核技术及应用]