裂变气体核素γ射线效率刻度中的自吸收校正  

Self-Absorption Correction inγ-ray Efficiency Calibration of Fission Gas Nuclide

作　　者：解峰[1] 何小兵[1] 包敏[1] 姜文刚[1] 

机构地区：[1]西北核技术研究所,陕西西安710024

出　　处：《原子能科学技术》2010年第10期1153-1156,共4页Atomic Energy Science and Technology

摘　　要：针对裂变气体核素HPGe探测器效率刻度中的自吸收校正问题,本工作详细描述了源盒、探测器和源物质等计算中需要的参数,按照实际的几何布局建立了HPGe探测器效率的蒙特卡罗计算模型,并编制了相应计算程序。计算模型可靠性得到实验数据的验证,用该模型计算了裂变气体核素在不同源介质下的探测效率,得到了相应的自吸收校正因子。In order to solve the problem of self-absorption correction in γ-ray efficiency calibration of fission gas nuclide,the parameters about source container,detector and source matrix etc.were described,and Monte-Carlo model and program of efficiency computation for HPGe detector were established according to experiment layout.The efficiency of fission gas nuclides was calculated in the different source matrices,and the corresponding self-absorption coefficients were obtained.The reliability of the model was validated by the experiment data.

关 键 词：蒙特卡罗方法 HPGE探测器 探测效率 自吸收校正 

分 类 号：TL817.2[核科学技术—核技术及应用]