title: Precise measurement and calculation of coincidence summing corrections for point and linear sources.
abstract: Point sources of (60)Co, (133)Ba, (134)Cs and (152)Eu, calibrated at Physikalisch-Technische Bundesanstalt were measured in 13 positions on the axis of a 50% relative efficiency p-type detector. The peak and total efficiencies were calibrated using single photon emitting nuclides. Precise experimental values of the coincidence summing corrections were evaluated in each geometry. Synthetic linear source data, as well as the corresponding peak and total efficiency curves, were prepared using the dependence of the count rates on the position of the emitting point. The coincidence summing corrections for the linear sources were computed, analyzed with respect to different approximations and compared with simulations carried out with GESPECOR.
authors.affiliation: Physics Department, University of Bucharest, P.O. Box MG-11, 077125 Magurele, Romania. Octavian.Sima@kit.edu
authors.forename: Octavian
authors.initials: O
authors.lastname: Sima
authors.forename: Dirk
authors.initials: D
authors.lastname: Arnold
mesh_terms: D000465:Algorithms; D016477:Artifacts; D006207:Half-Life; D038622:Internationality; D011829:Radiation Dosage; D011868:Radioisotopes / Q000032:analysis* / Q000737:chemistry / Q000592:standards*; D011874:Radiometry / Q000379:methods* / Q000592:standards*; D012015:Reference Standards; D012016:Reference Values
chemical_list: D011868:Radioisotopes