论文部分内容阅读
一、前言 本工作是用一个自行设计的大面积薄窗、多丝、流气式正比计数器,在未经处理的待测水样的上方,对水中的α或β放射性进行直接测量。由于省去了制样过程,不但避免了物理、化学制样上的麻烦和制样效率的修正,而且能较快给出结果,可能实现即时显示,这对安全监测特别重要。但相对于浓缩制样来说,它的灵敏度较低;本工作只适于测量比放较高的水样,对α大于10~(-9)居里/升,对β大于10~(-10)居里/升。对实现废水中α或β的连续测量本文亦有一定参考意义。
First, the preface This work is to use a self-designed large-area thin-window, multi-wire, flow proportional air counter, in the untreated water above the sample, the water in the α or β radioactive direct measurement. The omission of the sample preparation process not only avoids the physical and chemical sample troubles and the correction of the sample preparation efficiency, but also gives a quick result and real-time display, which is particularly important for safety monitoring. However, its sensitivity is lower than that of concentrated sample preparation. This work is only suitable for the measurement of water samples with higher than 10 ~ (-9) a Curie / 10) Curie / liter. This article also has certain reference meaning for the continuous measurement of α or β in wastewater.