一种改善闭气式正比计数器换气周期的方法  

A Method for Optimising the Gas Replacing Period of Sealed Proportional Counter

作　　者：张勇[1] 杨勇 

机构地区：[1]中国辐射防护研究院,山西太原030006 [2]辽宁渤海船舶重工甲装分厂,辽宁葫芦岛125004

出　　处：《核电子学与探测技术》2011年第11期1292-1294,共3页Nuclear Electronics & Detection Technology

摘　　要：正比计数器具有气体放大作用,很适合用于低能粒子探测。用于低能X射线和α/β污染监测时,正比计数器按充气方式可以划分为两大类:流气式和闭气式。与流气式相比,闭气式正比计数器使用方便;但是其寿命比较短,需要周期性更换工作气体。介绍了闭气式正比计数器性能老化问题,以及一种改善其换气周期的方法。Proportional counter can be used as low-energy particles detector because of its gas gain.According to charging manner,proportional counter can be divided into sealed and gas-flow proportional counters.Compared with gas-flow counter,although sealed proportional counter can be operated simply but it is short-lived,needs to replace the sealed gas periodically.It introduces the aging phenomenon of sealed proportional counter and a method for optimising the gas replacing period.

关 键 词：闭气式正比计数器 性能老化 换气周期 

分 类 号：TL814.3[核科学技术—核技术及应用]