α/β放射性气溶胶的小流量采样快速测量技术研究  

Reaserch of a Method of Low Rate of Flow Sampling and Quick Survey for α/β Radioactive Aerosol Monitoring

作　　者：田新[1] 王善强[1] 梁卫平[1] 张磊[1] 

机构地区：[1]防化研究院第二研究所,北京102205

出　　处：《核电子学与探测技术》2012年第4期449-452,共4页Nuclear Electronics & Detection Technology

摘　　要：针对放射性气溶胶监测仪的便携要求,设计了一套小流量采样快速测量系统和测量方法。采用累积采样累积测量的方式,联合利用能量甄别修正法与α/β比值法去除Rn子体的干扰,实现小流量采样条件下的α/β放射性气溶胶的同时监测。通过对探测下限的分析,表明该方法可满足应急监测的需求,为便携式α/β放射性气溶胶监测仪设计提供了参考。Portability of radioactive aerosol monitor is required in some conditions, so a system and a method of low rate of flow sampling and quick survey have been designed in the article. The method of cumulative - sampiing and cumulative - measurement has been chosen. The method of corrected energy discrimination and 0./6 ratio have been used for reducing the effect of radon progeny and thoron progeny. So α/β activity concentration can be monitored quickly in condition of low rate of flow sampling. The detection limit of the system is ana- lysed, it is proved that the method has met some requirements of emergency response and been useful for design of portable radioactive aerosol monitor.

关 键 词：α/β放射性气溶胶 小流量采样 能量甄别修正法 α/β比值法 

分 类 号：TL81[核科学技术—核技术及应用]