虚拟仪器在核物理实验中的应用  

Digital Techniques for n/γ Pulse Shape Discrimination and Energy Spectroscopy Using BC501A Liquid Scintillators

作　　者：郑普[1] 陈渊[1] 

机构地区：[1]中国工程物理研究院核物理与化学研究所,四川绵阳621900

出　　处：《核电子学与探测技术》2009年第5期974-977,共4页Nuclear Electronics & Detection Technology

摘　　要：介绍了利用虚拟仪器技术在核物理实验中的几种应用:包括基于GPIB总线构成的对OR-TEC974或994定标器进行计算机控制,实现D-T反应伴随α粒子数的分时测量;基于PCI总线构成的控制数据采集卡对BC501A液体闪烁体的脉冲信号进行采集,经处理得到中子伽马的分辨谱与质子和电子的反冲能谱,对反冲谱进行解谱得到中子伽马能谱;基于PCI总线构成的控制数据采集卡进行快信号逐脉冲采集,获得测量能谱。软件采用LabVIEW编程,极大减轻了软件开发的工作量。A few applications about virtual instrument are introduced. The program of ORTEC974 or 994 controlled by GPIB control card is application for system of neutron source monitor. Using of digital pulse techniques for n/γ pulse shape discrimination in BC501A liquid scintillators, discrimination spectra of n/γ and recoil spectra of neutron, are obtained. Using LabVIEW program of uncoiling spectra, energy spectra of neutron and gamma are obtained. Using LabVIEW program of high speed Digitizer acquires signal pulse by pulse to acquired energy spectra.

关 键 词：虚拟仪器 LABVIEW 脉冲形状甄别 中子能谱 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]