层析γ扫描技术效率矩阵计算模型分析与修正  

Analysis and Correction of Scale Model of Tomographic Gamma Scanning Efficiency Matrix

作　　者：成雨[1] 翁文庆[1] 白云飞[1] 王德忠[1] 杨永亮 张勇 

机构地区：[1]上海交通大学机械与动力工程学院,上海200240 [2]秦山核电公司,海盐314300

出　　处：《上海交通大学学报》2008年第9期1471-1473,共3页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金资助项目(10675084)

摘　　要：在对层析γ扫描技术效率矩阵进行刻度,特别是采用体源刻度时,传统实验刻度方法实现较为困难,采用蒙特卡罗方法刻度需要较高精度的探测器尺寸.为此通过对刻度空间不同位置的探测效率与计算效率相似比较,分析并修正探测器模型,使计算值与实验值相对误差小于5%,得到较为精确的刻度模型.研究结果为进一步刻度分析奠定了理论和计算模型基础.Traditional experimental scale of efficiency does not adapt to the scale of efficiency matrix of tomographic gamma scanning, especially when the radio-source is a bulk. When Monte Carlo method is used to scale the efficiency, accurate measurements of detector are needed. This paper compared the results of experiment with calculation at different locations. The model of calculation was adjusted to make the relative errors between calculations and experiments below 5 percent. The adjusted model can be considered the accurate one and can be used in scale of calculation.

关 键 词：层析γ扫描技术 效率矩阵 蒙特卡罗方法 刻度模型 

分 类 号：TL814[核科学技术—核技术及应用]