| HPGe探测器对γ射线源峰探测效率的修正 |
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| 引用本文： | 张建国.HPGe探测器对γ射线源峰探测效率的修正[J].海军工程大学学报,1992(3). |
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| 作者姓名： | 张建国 |
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| 作者单位： | 海军工程学院舰船蒸汽燃气核动力系 |
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| 摘 要： | 本文论述了核辐射测量中,低能大体积γ放射性样品定量分析时影响HPGe探测器源峰探测效率刻度质量的主要因素,并提出了利用多谱线标准源法与改变源—探测器距离相结合的方法对小源距情况下的加和峰效应进行修正;利用高斯型函数拟合的近似方法对小源距情况下的非同轴性进行修正。实测结果表明,作了以上修正之后,HPGe探测器对中子活化后的矿渣样品含量分析结果的最大相对误差可减小到12％以内。
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| 关 键 词： | γ射线 HPGe探测器 源峰探测效率 加和峰 非同轴性 源—探测器距离 |
Modifying Methods of Gamma-Ray Source-Peak Detecting Efficiency for HPGe Detector |
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| Zhang Jianguo.Modifying Methods of Gamma-Ray Source-Peak Detecting Efficiency for HPGe Detector[J].Journal of Naval University of Engineering,1992(3). |
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| Authors: | Zhang Jianguo |
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| Institution: | Zhang Jianguo |
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| Abstract: | This thesis describes the influence of high count rate and non-coaxal factor which have realtion to the calibrating quality of source-peak detecting efficiency for high-pure-germanium (HPGe) detector, when quantitative analysis of the gamma-ray samples having low energy and large volume being done. Two kinds of modifying methods and the applied result are given. |
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| Keywords: | Gamma-ray High-pure-germanium detector Source-peak detecting efficiency Sum-peak Non-coaxality Source-to-detector diatance |
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