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Modeling a gamma spectroscopy system and predicting spectra with Geant-4

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Abstract

An activity predictor software was previously developed to foresee activities, exposure rates and gamma spectra of activated samples for Radiation Science and Engineering Center (RSEC), Penn State Breazeale Reactor (PSBR), Neutron Activation Analysis (NAA) measurements. With Activity Predictor it has been demonstrated that the predicted spectra were less than satisfactory. In order to obtain better predicted spectra, a new detailed model for the RSEC NAA spectroscopy system with High Purity Germanium (HPGe) detector is developed using Geant-4. The model was validated with a National Bureau of Standards certified 60Co source and tree activated high purity samples at PSBR. The predicted spectra agreed well with measured spectra. Error in net photo peak area values were 8.6–33.6%. Along with the previously developed activity predictor software, this new model in Geant-4 provided realistic spectra prediction for NAA experiments at RSEC PSBR.

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Acknowledgments

This project was sponsored by U.S. Department of Energy (DOE) under Nuclear Engineering Education Research (NEER) grant DE-FG07-05ID-14702, U.S. DOE Innovation in Nuclear Infrastructure and Education, DE-FC07-02ID-14423, The Pennsylvania State University, Radiation Science and Engineering Center.

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Authors and Affiliations

  1. Radiation Science and Engineering Center, The Pennsylvania State University, University Park, PA, 16802, USA

    Dağıstan Şahin & Kenan Ünlü

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  1. Dağıstan Şahin
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  2. Kenan Ünlü
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Correspondence to Dağıstan Şahin.

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Şahin, D., Ünlü, K. Modeling a gamma spectroscopy system and predicting spectra with Geant-4. J Radioanal Nucl Chem 282, 167–172 (2009). https://doi.org/10.1007/s10967-009-0317-y

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  • DOI: https://doi.org/10.1007/s10967-009-0317-y

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