核脉冲波形甄别方法研究  

Research on Methods of Nuclear Pulse Shape Discrimination

作　　者：黄广伟 周春芝[1] 肖无云[1] 樊海军[1] 陈晔[1] HUANG Guang-wei, ZHOU Chun-zhi, XIAO Wu-yun, FAN Hai-jun, CHEN Ye(Research Institute of Chemical Defense, Beijing 10220)

机构地区：[1]中国人民解放军防化研究院,北京102205

出　　处：《核电子学与探测技术》2017年第8期762-766,共5页Nuclear Electronics & Detection Technology

摘　　要：建立了一套基于信号发生器和数字示波器采样的仿真数字化核脉冲分析系统,分别采用电荷积分法、过零时间法、脉冲梯度法、指数拟合法和离散傅里叶变换法完成了仿真中子和γ射线的数字化甄别。结果表明,几种方法均可较为理想的实现n/γ甄别,但在甄别效果和计算时间上存在较大差异,可为实时n/γ甄别的算法选取和优化提供一定参考依据。Established an emulational digital pulse shape discrimination system based on signal generator and digital oscilloscope,respectively using charge integration method,zero-crossover method,pulse gradient analysis,exponential fitting and discrete Fourier transform,completed digital discrimination of emulational neutron and gamma ray signals. As indicated,all of these algorithms are ideal for n/γdiscrimination,with substantial differences on figure of merit and calculating time,which can provide references for selection and optimization of real-time n/γ discrimination algorithms.

关 键 词：数字化 脉冲波形甄别 MATLAB仿真 

分 类 号：TL822.6[核科学技术—核技术及应用]