Computational assessment of the impact of gamma-ray detector material properties on spectroscopic performance
2011
Pacific Northwest National Laboratory (PNNL) is performing a computational assessment of the impact of several
important gamma-ray detector material properties (e.g. energy resolution and intrinsic detection efficiency) on the
scenario-specific spectroscopic performance of these materials. The research approach combines 3D radiation transport
calculations, detector response modeling, and spectroscopic analysis of simulated energy deposition spectra to map the
functional dependence of detection performance on the underlying material properties. This assessment is intended to
help guide formulation of performance goals for new detector materials within the context of materials discovery
programs, with an emphasis on applications in the threat reduction, nonproliferation, and safeguards/ verification user
communities. The research results will also provide guidance to the gamma-ray sensor design community in estimating
relative spectroscopic performance merits of candidate materials for novel or notional detectors.
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