| γ辐射场探测特征γ全能峰绝对效率的Monte Carlo计算 |
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| 引用本文： | 韦孟伏,张连平,蒋国强,魏彦波,齐红莲,吴伦强,胡思得. γ辐射场探测特征γ全能峰绝对效率的Monte Carlo计算[J]. 核技术, 2004, 27(5): 344-349 |
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| 作者姓名： | 韦孟伏 张连平 蒋国强 魏彦波 齐红莲 吴伦强 胡思得 |
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| 作者单位： | 中国工程物理研究院,绵阳,621900;中国工程物理研究院,绵阳,621900;中国工程物理研究院,绵阳,621900;中国工程物理研究院,绵阳,621900;中国工程物理研究院,绵阳,621900;中国工程物理研究院,绵阳,621900;中国工程物理研究院,绵阳,621900 |
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| 基金项目： | 中国工程物理研究院基金资项目(20020759) |
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| 摘 要： | 将HPGeγ谱仪应用于评估放射性管道内过滤器滞留量，需要知道探测器对过滤器内γ辐射的绝对效率。根据Monte Carlo模拟光子输运过程的理沦，对过滤器内γ辐射的自吸收因子、路径上物质吸收因子、几何因子和晶体中的能量沉积等进行了描述。研究表明，实验检验模拟结果不确定度小于10％。
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| 关 键 词： | Monte Carlo 放射性物质 滞留量 绝对效率 |
Monte Carlo simulation of absolute efficiencies of coaxial HPGe detector for known source distribution |
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| WEI Mengfu ZHANG Lianping JIANG Guoqiang WEI Yanbo QI Honglian WU Lunqiang. Monte Carlo simulation of absolute efficiencies of coaxial HPGe detector for known source distribution[J]. Nuclear Techniques, 2004, 27(5): 344-349 |
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| Authors: | WEI Mengfu ZHANG Lianping JIANG Guoqiang WEI Yanbo QI Honglian WU Lunqiang |
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| Abstract: | In order to apply HPGe gamma spectroscopy to estimate hold-up in radioactive waste pipes, it is necessary to study absolute efficiencies of the detector for known source distribution. Depending on the principle of Monte Carlo simulation of photon transport, we have calculated the energy deposition in cylindrical HPGe crystals, self-absorption absorption by materials on transport ways and geometrical factors for known source distribution. A comparison between experimental data with calculated results, shows that the uncertainty is less than 10%. |
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| Keywords: | Monte Carlo simulation Radioactive matter Hold-up Absolute efficiencies |
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