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本文介绍的多路α测量仪,可同时测量五六个电沉积等形式的α放射性样品。各路分别计数存贮,共用一组译码显示。可随时读取任何一路数据。仪器具有自动定时,溢出指示和电池更换指示等。采用电池供电。抗干扰性好。电子电路均设计成极低功耗的电路,用六节一号电池或GNY—3镉镍蓄电池,充电一次可连续工作500h以上。探测器灵敏区有φ8,φ12,φ16或φ20mm几种,平均本底分别为2.2,2.4,3.2和4.7计数/24h。测量24h的感量为3×10~(-4)Bq。实际应用表明其性能稳定可靠,使用方便,提高了工作效率。本仪器适用于核事故处理,环境放射性调查、食品检验以及工厂、医院等部门进行数量较多的强度很弱的α放射性样品的测量。
This article describes the multi-channel α measuring instrument that can simultaneously measure five or six electrodeposition and other forms of alpha radioactive samples. Counting separately for each store, sharing a set of decode display. Can read any data at any time. Instrument with automatic timing, overflow instructions and battery replacement instructions. Powered by battery. Good anti-interference. Electronic circuits are designed to be very low power consumption circuit, with six batteries or GNY-3 nickel-cadmium batteries, charging time can work continuously for more than 500h. Detector sensitive area has φ8, φ12, φ16 or φ20mm several, the average background were 2.2,2.4,3.2 and 4.7 counts / 24h. The measurement of 24h sense of 3 × 10 ~ (-4) Bq. Practical application shows that its performance is stable and reliable, easy to use, improve work efficiency. The instrument is suitable for nuclear accident treatment, environmental radioactive investigation, food inspection and factories, hospitals and other departments for a large number of weak α radioactivity measurement.