Title: Development and Validation of Fast and Accurate Simulation Tools of full Gamma Spectra from Shielded and Unshielded Uranium Samples
Authors: BERLIZOV AndreyMAYER Klaus
Citation: APPLIED RADIATION AND ISOTOPES vol. 68 no. 9 p. 1822-1831
Publication Year: 2010
JRC N°: JRC56415
ISSN: 0969-8043
URI: www.elsevier.com/locate/apradiso
DOI: 10.1016/j.apradiso.2010.03.019
Type: Articles in periodicals and books
Abstract: g-Spectrometry is a basic and widely applied method in nuclear security and nuclear safeguards areas. For addressing the growing needs in education and training, in research and development as well as in practical g-spectrometry in these areas, MonteCarlo based web-accessible g-spectrum modelling tools have been developed for the European Commission¿s Nucleonica portal at www.nucleonica.net. A recent validation study has demonstrated a good performance of the implemented simulation approach for modelling realistic g-spectra from shielded and unshielded point-like sources. In the present work this approach has been further tested with the use of a 0.2 kg voluminous 4.46 wt% enriched uranium reference material and a portable10% HP Ge detector. The simulations for shielded and unshielded measurement conditions revealed a good agreement with the experimentally acquired g-spectra, both for the detection efficiency values and for the overall spectrum shape and intensity in the energy range up to2.6MeV.
JRC Directorate:Nuclear Safety and Security

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