基于数值分析法的多点源核料位计放射源强度分布计算及测量的非线性修正  

The Radioactive Source Distribution Calculation and Gauging Nonlinear Correction of Multi-point Source Nuclear Gauge Based on the Numeric Analysis Method

作　　者：程晓龙[1] 赵修良[1] 周剑良[1] 徐继圆[1] 吕洋[1] 

机构地区：[1]南华大学核科学技术学院,湖南衡阳421001

出　　处：《同位素》2013年第3期135-143,179,共10页Journal of Isotopes

基　　金：国家军品配套项目(JPPT-115-5-882)

摘　　要：为了实现核料位计的线性刻度,采取多点源单探测器的核子料位计方案,提出三种能够实现核料位计近似线性刻度的多点源强度分布的计算方法。用60 Co源对建立的理论模型进行计算,绘制出计数率料位曲线,并通过Excel和Matlab软件进行了数值计算和残差分析,修正了测量的非线性,实现理论设计上的近似线性输出。In order to realize the linear output of the nuclear gauge, the multi-point source and single detector scheme was used, proposing three methods for calculating the distribu- tion of multi-point source activity. Calculations were did respectively based on the design scheme, and the material level-cps graphs were drew out by using 6o Co source. The numeric calculation and residual analysis was completed to correcte the gauging nonlinearity and re- alize the oretical linear output.

关 键 词：核子料位计 多点源 两点标定 非线性修正 

分 类 号：TL8[核科学技术—核技术及应用]