【作者】 解峰； 何小兵； 包敏； 姜文刚；

【Author】 XIE Feng,HE Xiao-bing,BAO Min,JIANG Wen-gang (Northwest Institute of Nuclear Technology,Xi’an.710024,China)

【机构】 西北核技术研究所；

【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,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;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的探测效率,得到了相应的自吸收校正因子。更多还原

【Abstract】 In order to solve the problem of self-absorption correction inγ-ray efficiency calibration of fission gas nuclide,this paper describes the parameter about source container,detector and source matrix etc,and Monte-Carlo model and program of efficiency computation for HPGe detector are established according to experiment layout;The reliability of the model is validated by the experiment data.Efficiency of fission gas nuclides are calculated in the different source matrices,and the corresponding self-absorption correction coefficients are obtained.更多还原