When the activity of radionuclides is measured by gamma spectroscopy,a coincidence effect will occur for nuclides emitting gamma rays in cascade,which will affect the measurement results.We want to get the coincidence correction factor for different environmental media samples.The relationship between the coincidence correction factors of the simple cascade emission mode nuclides in different media was studied,and the calculation method of coincidence correction factors using water instead of other environmental media was proposed.The experimental results showed that the maximum deviation of the results obtained by this method was 2.8％.When using this method to calculate the coincidence correction factor,we do not need to prepare different media standard sources one by one,and it provides a simple coincidence correction method for multi-media radiation environment monitoring.
维普
万方数据