延迟符合法氡同位素分辨系统的实验装置的研制  

Design of Radon Isotope Discrimination System Based on Delayed Coincidence Measurement

作　　者：陈政涛[1] 颜拥军[1] 周剑良[1] 

机构地区：[1]南华大学核科学与技术学院,湖南衡阳421001

出　　处：《核电子学与探测技术》2009年第5期1125-1128,共4页Nuclear Electronics & Detection Technology

基　　金：湖南省科技厅资助项目(2008TP4009-2)

摘　　要：介绍延迟符合法氡同位素分辨系统实验装置,该实验装置可对低浓度氡同位素进行连续测量。采用精密定时器LM322用于对219Rn2、20Rn2、22Rn这三种同位素进行延迟符合,并且该系统能对符合的脉冲进行计数、数据处理、液晶显示,同时还提供了键盘接口、与微机的串口通信等功能。A exprirnental device of radon isotope discrimination system based on delayed-coincidence method was introduced. This exprimental device can measure low-level Rn concentration continuously. Precision timers LM322 are adopted for radon isotope, delay-coincidence circuit. And the functions include coincidence pulses counting, data pocessing, LCD display, it also provides the keyboard interface and serial commumication outport.

关 键 词：延迟符合法 氡同位素 氡子体 甄别 串口通信 

分 类 号：TL822[核科学技术—核技术及应用] O613.6[理学—无机化学]