近水平入射康普顿锐角散射法测油垢厚度的模拟实验研究

Simulated experimental studies on measuring grease stain thickness in oil pipeline by quasi-parallel incident acute angle scattering

用石蜡模拟油垢,60Co放射源的平均能量为1.25MeV的γ射线近水平入射,以一定的散射角接收散射γ光子数,发现散射γ计数与被测石蜡厚度之间存在线性关系。本实验测得石蜡厚度的最佳测量灵敏度为1181/mm,其线性相关系数为0.9909。

Paraffin layers under a steel plate were used to simulate oil crust in pipelines by detecting scattered γ-rays in different solid angles from a ^60Co source, which irradiated the specimen in quasi-parallel incidence. A linear relationship was obtained between the counting rates of the scattering γ-rays and the paraffin thickness. The best sensitivity of measurement is 1181/mm, with the linearitv coefficient of 0.9909