层析γ扫描中的探测效率刻度

详细信息

Calibration of Detection Efficiency in Tomographic Gamma Scanning

摘要: 探测效率刻度技术是层析γ扫描测量中最重要的技术之一。本工作研究用蒙特卡罗方法刻度层析γ扫描系统探测效率的方法。对3×3×3体素组成的样品模型，用蒙特卡罗软件计算了层析γ扫描测量装置的探测效率矩阵。在实验室层析γ扫描原型装置上，实验研究了层析γ扫描测量装置的探测效率。对两者进行了比较，相对偏差绝对值小于5％。研究结果表明了蒙特卡罗方法刻度层析γ扫描测量装置探测效率的可行性。
- 层析γ扫描 ,
- 探测效率刻度 ,
- Monte-Carlo方法
Abstract: The calibration technique of detection efficiency is one of the most important techniques in tomographic gamma scanning (TGS) method. The calibration of detection efficiency with Monte-Carlo method was proposed. For a 3×3×3 TGS model, all 972 efficiency matrix elements were calculated by Monte-Carlo code. The experimental calibration of detection efficiency in TGS prototype was conducted. The calculated values fit the experimental data very well with relative deviation less than 5%. The results show that Monte-Carlo method used to obtain TGS efficiency is feasible and reliable.
- tomographic gamma scanning ,
- detection efficiency calibration ,
- Monte-Carlo method

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