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一种γ谱弱峰优化检测方案研究

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成果类型:
期刊论文
作者:
吴和喜;袁新宇;刘庆成;刘玉娟;杨磊
通讯作者:
Liu, Q.-C.(qchliu@ecit.edu.cn)
作者机构:
[刘庆成; 刘玉娟; 吴和喜; 杨磊] Engineering Research Center of Nuclear Technology Application, Ministry of Education, East China Institute of Technology, Nanchang 330013, China
[袁新宇] School of Nuclear Science and Technology, University of South China, Hengyang 421001, China
[刘庆成; 刘玉娟; 吴和喜; 杨磊] School of Nuclear Engineering and Technology, East China Institute of Technology, Fuzhou 344000, China
通讯机构:
Engineering Research Center of Nuclear Technology Application, Ministry of Education, East China Institute of Technology, China
语种:
中文
关键词:
弱峰检测;标准差检测滤波;IAEA测试谱
关键词(英文):
Detected noise level by standard deviation;Test spectrum of IAEA;Weak peak search
期刊:
原子能科学技术
ISSN:
1000-6931
年:
2012
卷:
46
期:
9
页码:
1142-1146
基金类别:
国家自然科学基金资助项目(41174089,41164003); 江西省教育厅青年科学基金资助项目(GJJ10176); 核技术应用教育部工程研究中心(东华理工大学)开放基金资助项目(HJSJYB2010-07);
机构署名:
本校为其他机构
院系归属:
核科学技术学院
摘要:
介绍一种γ射线能谱高斯函数卷积寻峰方法,分析得出并有效解决应用该方法准确获取弱峰峰位信息的条件。设计了1套包含1倍标准差检测滤波方法、SNIP本底扣除法和峰宽与探测限联合判别法的γ能谱弱峰优化检测方案。在Matlab 7.1平台上编写上述方案及其他2种寻峰算法的程序。与2款商品化γ能谱分析软件一起,分别对1976年IAEA测试谱进行分析,结果表明,该方案检测结果优于其他方法和软件,能很好区分康普顿平台与峰;在不出现假峰的情况下,检测出所有22个峰;检测峰位与标准峰位偏移最大2.90道。
摘要(英文):
A peak search method based on spectrum convolution was proposed. Required preconditions, by which exact position of weak peaks would be detected, were analyzed. A suit of optimal scheme for detecting all of weak peaks in γ-ray spectrum was worked out. It contained a filter with noise level detected by standard deviation, background eradication by SNIP algorithms, and removing false peaks and resolving overlapping peaks by detection limit and the size of opposite peak width. All of programs about this scheme and two other peaks search algorithms were compiled in Matlab 7.1 platform. Test ...

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