Quindos L S, Fernandez P L, Soto J, Newton G J
Department of Medical and Applied Physics, Faculty of Medicine of Santander, University of Cantabria, Spain.
Int J Rad Appl Instrum A. 1991;42(11):1108-10. doi: 10.1016/0883-2889(91)90022-s.
A new method to determine the leakage rate from encapsulated radium sources is proposed. The method is based on the principle of enclosing the source to be tested in a hermetically sealed container and measuring the radon radioactivity growth in the container as a function of time. A cylindrical modified Lucas cell, designed and built in our laboratory, is used for measuring the radon which are done by ZnS(Ag) alpha scintillation counting and can be easily compared with existing standard for leak tests. Results obtained show the applicability of the method for leak testing for radon leakage from sealed radium sources.
提出了一种测定封装镭源泄漏率的新方法。该方法基于将待测源置于密封容器中，并测量容器中氡放射性随时间增长的原理。我们实验室设计并制造的圆柱形改进型卢卡斯室用于测量氡，通过硫化锌（银）α闪烁计数进行测量，并且可以很容易地与现有的泄漏测试标准进行比较。所得结果表明该方法适用于密封镭源氡泄漏的泄漏测试。
