小角度入射法测油垢厚度的实验与模拟分析  

Simulation and Experiment on Measuring the Grease Stain Thickness by Acute Angle Incidence Method

作　　者：阿布都莫明.卡地 周满[1] 艾尔肯.阿不列木[1] 

机构地区：[1]新疆大学物理学院,新疆乌鲁木齐830046

出　　处：《核电子学与探测技术》2010年第5期626-629,679,共5页Nuclear Electronics & Detection Technology

基　　金：国家自然科学基金项目(10565003)

摘　　要：用铁板模拟管壁,进行实际油垢的小角度散射测厚实验,并用MCNP程序在与实际实验相同的几何条件下进行模拟运算,来观察在不同的小角度散射情况下,散射计数与油垢厚度之间的关系。结果表明:实验与模拟结果符合良好,特别是在45°入射情况下,实验和模拟结果中的R2基本上大于0.99,表明45°入射角对于垢厚和散射光子数之间的线性关系是个较好的选择。小角度法测垢是可行的。By iron bar presenting oil tube, making acute angle scattering experiment on measuring grease stain by using oil crust, and a MCNP simulation of the experiment was made in the same geometrical con- dition to observe the relationship between scattering photon numbers and grease stain thickness. The re- sult shows that experiment and simulation result fits very well. Especially for 45 incident angle the value of R2 is, on the whole, bigger than 0.99, means that 45 incident angle is a good choice for the linear rela- tionship between scattering photon numbers and grease stain thickness. Acute angle scattering is feasible.

关 键 词：小角度散射 γ光子数 康普顿散射 MCNP 

分 类 号：O571.323[理学—粒子物理与原子核物理]