Following a EUROMET project for the development of a range of spiked reference materials for gamma-ray spectrometry, a number of new techniques were adopted at ENEA for the routine production of these materials. A quality control of the produced samples was simultaneously started. It is based on HPGe gamma-ray spectrometry of the different samples in Marinell beaker measuring geometry. Within a few years a great number of materials, with density values ranging from 0.4 to 1.8 g cm-3and different chemical composition, spiked with mixtures of gamma emitters (60 to 1836 keV), were processed. The full-energy-peak efficiency values for the different matrices were normalised to a reference sample composition allowing the reduction of the acceptability criteria on which the quality control is based. Two theoretical models were used to compute the self-attenuation corrections obtaining a satisfactory agreement in the considered range of sample parameters.
All Science Journal Classification (ASJC) codes
De Felice, P., Iskandar, D., Fazio, A., & Biagini, R. (1998). The quality control in the production of spiked reference materials for gamma-ray spectrometry. Applied Radiation and Isotopes, 49(9-11), 1421 - 1427. https://doi.org/10.1016/S0969-8043(97)10086-0