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首页> 外文期刊>Applied radiation and isotopes: including data, instrumentation and methods for use in agriculture, industry and medicine >Calibration of the KRISS reference ionization chamber for certification of 222Rn gaseous sources
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Calibration of the KRISS reference ionization chamber for certification of 222Rn gaseous sources

机译：校准KRISS参考电离室以验证222Rn气态源

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摘要

A primary measurement system for gaseous 222Rn based on the defined solid angle counting method has recently been constructed at KRISS and the reference ionization chamber used to measure the activities of gamma-emitting single radionuclides was adopted as a secondary standard for gaseous 222Rn. A 20mL flame-sealed glass ampoule source from the primary measurement system was used to calibrate the ionization chamber for 222Rn. The 222Rn efficiency of the ionization chamber was compared with that calculated by using a photon energy-dependent efficiency curve and that measured by using a standard 226Ra solution. From the comparisons we draw the conclusion that the reference ionization chamber for gamma-emitting radionuclides can be a suitable secondary measurement system for gaseous 222Rn sources.
机译：最近在KRISS上建立了基于定义的立体角计数方法的气态222Rn的主要测量系统，采用了用于测量发射γ射线的单个放射性核素活度的参考电离室作为气态222Rn的二级标准。来自主要测量系统的20mL火焰密封玻璃安瓿瓶源用于校准电离室的222Rn。将电离室的222Rn效率与通过使用光子能量依赖性效率曲线计算出的效率和通过使用标准226Ra溶液测量的效率进行比较。从比较中我们得出结论，发射伽马射线放射性核素的参考电离室可以是适用于气态222Rn源的二次测量系统。

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