用^(60)Co放射源检测油垢厚度的初步实验研究  

Preliminary Experimental Research to Detect oil Crust Using ^(60)Co Radiator

作　　者：艾尔肯.阿不列木[1] 买买提热夏提.买买提 甫尔开提.夏尔丁 阿布都莫明[1] 王世亨[1] 刘圣康[2] 

机构地区：[1]新疆大学物理科学与技术学院,新疆乌鲁木齐830046 [2]南京大学物理系,江苏南京210093

出　　处：《新疆大学学报（自然科学版）》2007年第3期260-262,268,共4页Journal of Xinjiang University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(10565003)

摘　　要：本文用石蜡模拟油垢,用60Co放射源的1.25M eV平均能量的γ射线垂直入射,以一定的散射角和不同的探测立体角接收散射γ光子数,发现散射γ计数与被测石蜡厚度之间存在不同的线性关系.结果发现,放射源与探测器之间屏蔽的好坏和合理的探测距离对提高线性度有很大关系.本实验测得最佳线性相关系数平方值为0.9981,平均测量精度为1.26mm.这对研究散射法检测油垢厚度和选择合适的探测距离提供了实验基础.In this article, oil crust is simulated by paraffin, and 1. 25MeV γ ray of ^60Co is used in rectilinear irradiating; we have accepted γ ray photon numbers in scattering γ ray and in the different solid angle of plumeline, It is found that there is very different Zinear relation between counting numbers of scattering γ ray and thickness of paraffin. The results show that the big relation for increasing linear degree is related by the good and bad screening between radiator and detector, and the reasonable geometrical distance. The best experimental measuring square value of coefficient of linear correlation is 0. 9981 and mean value of the measuring accuracy is 1. 26mm.

关 键 词：γ光子数 线性度 油垢厚度 

分 类 号：O571.323[理学—粒子物理与原子核物理]