液体闪烁体探测器γ射线测量研究  

Research of γ-ray Measurement with Liquid Scintillation Detector

作　　者：王琦[1] 阮锡超[2] 王松林[1,2] 黄翰雄[2] 聂阳波[2] 周祖英[2] 孔祥忠[1] 

机构地区：[1]兰州大学核科学与技术学院,甘肃兰州730000 [2]中国原子能科学研究院核物理研究所,北京102413

出　　处：《原子核物理评论》2009年第2期136-139,共4页Nuclear Physics Review

摘　　要：利用几种单能γ源对BC501A型液体闪烁体探测器进行能量刻度,以得到探测器对电子的光输出响应函数。介绍了用蒙特卡罗模拟法确定康普顿边缘所对应的电子能量的方法,得到的结果与用半高点确定康普顿边缘方法所得的结果做了比较。利用德国PTB开发的PHRESP蒙特卡罗程序计算出液体闪烁体探测器对各种单能γ射线的光响应矩阵,阐述了利用γ射线响应函数矩阵和γ射线的反冲电子谱求解待测γ能谱的原理,对解谱的误差来源也进行了简要的分析。The light output of the BCS01A liquid scintillation aetector ior γ-rays was monoenergetic γ-ray sources. The Monte Carlo simulation method to confirm Compton edge was described briefly. The result was compared with that obtained by the semi-height method. The γ-ray response matrix of BC501A liquid scintillation detector was calculated by the Monte Carlo code PHRESP from PTB. The method of using response function matrix and recoil electron spectrum to unfold γ-ray energy spectrum was introduced and the error of unfolding spectrum was also briefly discussed.

关 键 词：液体闪烁体探测器 光响应函数 Γ能谱 SAND-Ⅱ迭代方法 

分 类 号：TL812.2[核科学技术—核技术及应用]