Quantitative comparison between PGNAA measurements and MCNPX simulations

A MCNPX model of a neutron activation facility for radioactive waste characterization was built to support experimental studies. To validate this model, small samples of different elemental composition were irradiated and experimental data are compared to simulation results obtained using different neutron capture prompt gamma ray databases. The different databases employed lead to similar results. Simulated and measured net peak areas agree within ±20 %.