| 峰位微扰动修正在构建高斯响应矩阵中的应用研究 |
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| 引用本文： | 赵剑锟,李蔚成,邢义强,吴和喜,张怀强,刘义保.峰位微扰动修正在构建高斯响应矩阵中的应用研究[J].原子能科学技术,2021,55(8):1494-1500. |
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| 作者姓名： | 赵剑锟 李蔚成 邢义强 吴和喜 张怀强 刘义保 |
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| 作者单位： | 东华理工大学 放射性地质与勘探技术国防重点学科实验室，江西 南昌330013；东华理工大学 核科学与工程学院，江西 南昌330013 |
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| 摘 要： | 现有的高斯响应矩阵在对高分辨率γ能谱进行重建时，极易出现假峰、峰位漂移等问题。本文针对测量条件（温/湿度、电压波动等）微弱变化引起峰位扰动进而影响高斯响应矩阵重建结果准确度的问题，通过引入微扰动修正因子，对现有高斯响应矩阵进行修正。采用IAEA重峰分解测试谱及GMX40P高纯锗探测器实测能谱对修正前后的高斯响应矩阵进行谱线解析测试。结果表明：通过修正后响应矩阵重建的能谱，其峰位与实际峰位保持一致，净峰面积的相对偏差分别低于1025%和550%。
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| 关 键 词： | 能谱重建 高斯响应矩阵 峰位微扰动 |
Study on Correcting Peak Position Weak Variation in Gaussian Response Matrix |
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| ZHAO Jiankun,LI Weicheng,XING Yiqiang,WU Hexi,ZHANG Huaiqiang,LIU Yibao.Study on Correcting Peak Position Weak Variation in Gaussian Response Matrix[J].Atomic Energy Science and Technology,2021,55(8):1494-1500. |
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| Authors: | ZHAO Jiankun LI Weicheng XING Yiqiang WU Hexi ZHANG Huaiqiang LIU Yibao |
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| Affiliation: | Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, East China University of Technology, Nanchang 330013, China; School of Nuclear Science and Engineering, East China University of Technology, Nanchang 330013, China |
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| Abstract: | Pseudo peak and peak drift easily occur when the existing Gaussian response matrix is used to reconstruct high resolution γ energy spectrum. In this paper, the weak variation factor influenced by temperature, humidity, voltage, etc. was studied to correct the Gaussian response matrix to improve accuracy. The IAEA deconvolution test spectrum and GMX40P HPGe measured spectrum were utilized to test the correcting Gaussian response matrix’s performance. The relative deviation of reconstruction results is within 1025% and 550% respectively. |
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| Keywords: | spectrum reconstruction Gaussian response matrix peak position weak variation
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