Coincidence summing effects in gamma-ray spectrometry using a Marinelli beaker

The coincidence summing effects on a HPGe spectrometer have been studied by using Marinelli beakers containing 133Ba and 152Eu solutions. The coincidence summing effects were calculated from the ratio of full-energy peak efficiency and total efficiency. The peak efficiency values for 133Ba and 152Eu corrected by using the peak-to-total ratio were found to be in good agreement (within 3%) as compared with the efficiency values from Marinelli beakers containing single gamma-ray emitters.