title: Coincidence summing corrections applied to volume sources.
abstract: The numerical calculation of coincidence summing corrections requires both the total and full-energy peak efficiencies to be included in the corrective factors. Moreover, in the case of volume sources, the coincidence probability depends on the position of the photon emission inside the radioactive sample, thus it is necessary to calculate the coincidence summing corrective factors by integrating the elemental contributions for the entire volume. The software ETNA calculates coincidence summing corrective factors according to a deterministic method, for volume sources, two approaches are included in the software: the "simplified" calculation uses directly the efficiency of the volume source like in the case of point source, and the "complete" calculation performs the volume integration. To assess the difference between these, different geometrical cases are tested for several radionuclides using both methods.
authors.affiliation: CEA-LIST/LNE-LNHB, CE Saclay, 91191 Gif-sur-Yvette, France. marie-christine.lepy@cea.fr
authors.forename: Marie-Christine
authors.initials: MC
authors.lastname: Lépy
authors.forename: Laurent
authors.initials: L
authors.lastname: Ferreux
authors.forename: Sylvie
authors.initials: S
authors.lastname: Pierre
mesh_terms: D000465:Algorithms; D016477:Artifacts; D003198:Computer Simulation; D015233:Models, Statistical; D011829:Radiation Dosage; D011868:Radioisotopes / Q000032:analysis*; D011874:Radiometry / Q000379:methods*; D012984:Software
chemical_list: D011868:Radioisotopes