用散射中子测量管道油垢厚度的实验与模拟  

Experiment and Simulation of Measuring Grease Stain Thickness in Pipeline by Using Scattered Neutrons

作　　者：时飞跃[1] 马加一[1] 赵经武[1] 艾尔肯.阿不列木 刘圣康[1] 杨惠玲[2] 

机构地区：[1]南京大学物理系,江苏南京210093 [2]新疆大学物理系,新疆乌鲁木齐830046

出　　处：《核电子学与探测技术》2009年第6期1327-1330,共4页Nuclear Electronics & Detection Technology

基　　金：国家自然科学基金资助项目(10565003)

摘　　要：由241Am-Be中子源、锂玻璃探测器和微机多道谱仪等组成的实验装置,测量了不同石蜡(模拟油垢)厚度的散射中子计数。同时用蒙特卡罗模拟,分别对241Am-Be中子源、252Cf中子源和14MeV中子源,计算得到了相似几何条件下,对应于不同石蜡(模拟油垢)厚度的散射中子计数。在模拟计算中,考虑了锂玻璃探测器的探测效率。对实验和模拟计算的结果进行了比较和讨论。A set of scattered neutron counts corresponding to different paraffin （simulated grease stain） thicknesses was obtained by using an experiment setup, which consists of a neutron source of 241 Am-Be, a Li-glass detector and a micro-computerized multi-channel spectrometer etc. In addition, by using Monte-Carlo program with the similar geometry, scattered neutron counts for different paraffin thicknesses were obtained for a 241 Am-Be energy spectrum, a 252Cf spectrum and a 14MeV spectrum In simulation, the detection efficiency of the El-glass detector was considered. Comparison and discussion were carried out between the experimental and simulation results.

关 键 词：散射中子 241Am-Be中子源 油垢 

分 类 号：O571.323[理学—粒子物理与原子核物理]