瞬发伽玛活化分析中3种探测器性能比较  

The Performance Test of Three Kinds of Detectors for PGNAA

作　　者：华龙[1] 肖才锦[1] 姚永刚[1] 金象春[1] 王平生[1] 王兴华[1,2] 倪邦发[1] 

机构地区：[1]中国原子能科学研究院核物理研究所,北京102413 [2]成都理工大学,成都610059

出　　处：《核电子学与探测技术》2016年第1期60-62,76,共4页Nuclear Electronics & Detection Technology

基　　金：国家自然科学基金(11475266)

摘　　要：利用中国先进研究堆（CARR）热中子束流孔道首次开展了瞬发伽玛中子活化分析（PGNAA）实验。对NH4Cl、Si、Fe、Al等4种样品进行了辐照,同时采用HPGe、LaBr3、BGO 3种探测器对样品进行实时测量,在瞬发伽玛射线的能量为0.002-10 MeV范围内研究了3种探测器在宽能区的能量线性、能量分辨率、探测效率等性能。The prompt gamma neutron activation analysis（ PGNAA） has been carried out by using the thermal neutron beam from the horizontal neutron guide of China Advance Research Reactor（ CARR）. Three kinds of gamma detectors（ HPGe,BGO and LaBr3） have been used for prompt gamma ray collection which came from the four kinds of specimen（ NH4Cl,Si,Fe and Al）. The capabilities of linearity,resolution and detection efficiency of gamma energy have been compared which are from the HPGe,BGO and LaBr3 detectors respectively at the range of 2 keV to 10 MeV of gamma energy. The results indicated that the detector of LaBr3 is reasonable predominance of detection efficiency and resolution of gamma energy.

关 键 词：中国先进研究堆 中子活化分析 Γ探测器 

分 类 号：TL8[核科学技术—核技术及应用]