原子能科学技术2012，Vol.46Issue(9)：1142-1146,5.
一种γ谱弱峰优化检测方案研究
Optimal Scheme for Detecting Weak Peak in γ-ray Spectrum
摘要
Abstract
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 y-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 spectrum of IAEA in 1976 was analyzed by the above three and two commercial y -spectrum analysis software. The results show that this scheme is preferable to the others. This method can distinguish available Compton platform and peaks,and check out all of the 22 peaks without a false peak. The largest deviation between calculated position and standard position by this method is 2. 90 channels.关键词
弱峰检测/标准差检测滤波/IAEA测试谱Key words
weak peak search/ detected noise level by standard deviation/ test spectrum of IAEA分类
数理科学引用本文复制引用
吴和喜,袁新宇,刘庆成,刘玉娟,杨磊..一种γ谱弱峰优化检测方案研究[J].原子能科学技术,2012,46(9):1142-1146,5.基金项目
国家自然科学基金资助项目(41174089,41164003) （41174089,41164003）
江西省教育厅青年科学基金资助项目(GJJ10176) （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) （东华理工大学）
