Single peak versus library least-squares analysis methods for the PGNAA analysis of vitrified waste

A feasibility study (Gardner et al., 1995) for the neutron capture prompt gamma-ray analysis (PGNAA) of simulated vitrified nuclear waste containing SiO2/Al2O3 and SiO2/Fe2O3 mixtures has been carried out. Analyses for elements Al, Si, and Fe were made by both the single peak area and the library least-squares methods using measured and simulated data. It is shown that the library least-squares method is about 2.5 times better than the single peak analysis method.