基于LabVIEW的^(252)Cf中子源频谱分析  

Frequency spectrum analysis of ^(252)Cf neutron source based on LabVIEW

作　　者：米德伶[1] 李鹏程[1] 

机构地区：[1]重庆大学光电技术及系统教育部重点实验室,重庆400044

出　　处：《强激光与粒子束》2011年第1期235-238,共4页High Power Laser and Particle Beams

基　　金：重庆市科委攻关科技计划资助课题(CSTC2009AC3048)

摘　　要：从252Cf中子源频谱测量系统的基本原理出发,针对中子脉冲序列本身"0,1"数据结构的特点,设计了自、互相关快速算法。采用LabVIEW多核处理器、多线程编程技术构建了基于LabVIEW的252Cf中子源频谱分析系统,不仅获得了自、互相关的快速计算结果,而且获得了自、互功率谱及谱密度比。研究结果表明:基于LabVIEW分析工具,既提升了自、互相关算法代码25%~35%的执行效率,又验证了LabVIEW用于进行频谱系统分析的可行性。The frequency spectrum analysis of ^252Cf Neutron source is an extremely important method in nuclear stochastic signal processing.Focused on the special ＂0＂ and ＂1＂ structure of neutron pulse series,this paper proposes a fast-correlation algorithm to improve the computational rate of the spectrum analysis system.And the multi-core processor technology is employed as well as multi-threaded programming techniques of LabVIEW to construct frequency spectrum analysis system of 252Cf neutron source based on LabVIEW.It not only obtains the auto-correlation and cross correlation results,but also auto-power spectrum,cross-power spectrum and ratio of spectral density.The results show that：analysis tools based on LabVIEW improve the fast auto-correlation and cross correlation code operating efficiency about by 25% to 35%,also verify the feasibility of using LabVIEW for spectrum analysis.

关 键 词：252Cf中子源 频谱测量系统 快速相关 频谱分析 LABVIEW 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]