Study on the Accuracy,Stability and Repeatability of Radon Standard Source and Influence Factors

Through experiment,theory analyzing and structure anatomizing,the accuracy,stability and repeatability of radon standard source which used in seismic observation stations are researched.It is found that main influence factors for the accuracy,stability and repeatability of radon standard source are tightness,leakage and block in the pipes.According to study result,some methods of maintenance in process of using are given in this paper.