HPXe电离室和LaCl_3(Ce)探测器在核材料鉴别中的应用  

Applications of HPXe ionization chamber and LaCl_3(Ce) detectors in nuclear material identification

作　　者：曾勇[1] 白立新[1] 张一云[1] 

机构地区：[1]四川大学物理科学与技术学院,成都610041

出　　处：《核电子学与探测技术》2007年第2期331-334,共4页Nuclear Electronics & Detection Technology

摘　　要：在核材料鉴别中,鉴于铀、钚材料中同位素种类多,发射的多条γ射线能量比较集中(主要都在0.1-2MeV之间)且分支比都比较小,生成的γ能谱复杂等特点,对于测量铀、钚材料的γ探测器要求具有高的能量分辨本领和探测灵敏度。常用于该种测量的是NaI闪烁探测器和HPGe探测器,而新的高压氙(HPXe)电离室探测器和LaCl3(Ce)探测器为核材料的鉴别提供了一种新的有效检测手段。In nuclear material identification, uranium and plutonium elements are consist of many isotopes , and they emit gamma-ray radiation with energies of 0. 1-2MeV and small probability, so their gamma- ray spectrum are complex. For detectors in nuclear material identification, they are required with better resolution and high efficiency. At the present, the detectors normally applied in the regions are NaI（TI） detectors and HPGe detectors, but the new HPXe ionization chamber and LaCl3 doped Ce scintillators detectors will provide a new valid approach.

关 键 词：核材料鉴别 高压氙(HPxe)电离室 LaCl3(Ce)探测器 

分 类 号：O57[理学—粒子物理与原子核物理]