Validation of a Monte Carlo HPGe detector model against irradiated foil gamma-ray spectroscopy measurements

A high-purity germanium detector Monte Carlo model was evaluated for its ability to predict activation product ratios in Fe, Cr, Ni, and stainless-steel foils. To evaluate the model, activation product ratios calculated from simulated gamma-ray spectra were compared against those from experiment measurements. Analysis shows that the detector model accurately predicts activation product ratios within 10% when free of interferences. Presence of a shield chamber greatly increases computation time, but does not provide any quantitative advantages. Overall, the model is useful for predicting activation product ratios and experiment planning. (author)