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| 数字核谱仪系统中脉冲堆积识别方法的研究 | |
| 引用本文： | 张怀强,吴和喜,汤彬,张雄杰.数字核谱仪系统中脉冲堆积识别方法的研究[J].东华理工大学学报（自然科学版）,2012,35(3):281-284. |
| 作者姓名： | 张怀强 吴和喜 汤彬 张雄杰 |
| 作者单位： | 1. 东华理工大学核资源与环境教育部重点实验室,江西南昌330013;东华理工大学核工程与地球物理学院,江西抚州344000 2. 东华理工大学核工程与地球物理学院,江西抚州,344000 3. 东华理工大学核资源与环境教育部重点实验室,江西南昌,330013 |
| 基金项目： | 国防基础科研项目(B3420110006);东华理工大学博士科研启动基金项目(DHBK201111) |
| 摘 要： | 数字核谱仪系统中的脉冲堆积直接影响到信号幅度的有效提取,进而影响到核谱仪的能量分辨率.为了减小脉冲堆积对核谱仪能量分辨率的影响,引入时间比较脉冲堆积识别方法,对识别到的堆积脉冲直接丢弃处理,将降低数字信号处理时间,同时可减小脉冲堆积对能量分辨率的影响,对计数率的影响可以通过简单的校正方法来实现计数率的补偿.采用上述方法对实际的核脉冲堆积信号进行了处理,然后对其进行了计数率校正,在实际应用中取得了良好的效果. |
| 关 键 词： | 数字核谱仪 脉冲堆积 识别方法 计数率校正 |
Methods of Pulse Pile-up Identification in Digital Nuclear Spectrometer System |
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| ZHANG Huai-qiang , WU He-xi , TANG Bin , ZHANG Xiong-jie.Methods of Pulse Pile-up Identification in Digital Nuclear Spectrometer System[J].Journal of East China Institute of Technology(Natural Science Edition),2012,35(3):281-284. | |
| Authors: | ZHANG Huai-qiang WU He-xi TANG Bin ZHANG Xiong-jie |
| Institution: | 1 ( 1. Key Laboratory of Nuclear Resources and Environment, East China Institute of Technology, Nanchang,JX 330013, China; 2.Faculty of Nuclear Engineering and Geophysics, East China Institute of Technology, Fuzhou, JX 344000, China) |
| Abstract: | The pulse amplitude’s extraction and energy resolution can be affected by the pulse pile-up in digital nuclear spectrometer system. In order to reduce the effect, this article introduces a time comparison identification method to identify the situation of pulse pile-up,which will reduce the digital signal processing time and the effects of energy resolution. The impact of the count rate can be corrected by a simple correction method. Finally, the actual pile-up pulse and count rate have been processed by this mothod,the results of this method have been verified in practical applications. |
| Keywords: | digital nuclear spectrometer pulse pile-up identification method count rate correction |
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