title: Experimental assessment of the coincidence summing corrections in gamma-ray spectrometry of bulk samples.
abstract: This work presents an experimental approach for estimation of the true coincidence-summing (TCS) correction for volume sources on the basis of TCS dependence on the source-to-detector distance. Firstly, it is shown that the TCS dependence on the source-to-detector distance can be linearized for point source geometry. If this linear dependence is established then TCS correction for an arbitrary source-to-detector distance can be obtained. In the case of a volume source a representative parameter d(V) can be formulated as the distance at which the point-source summing effect is the same as the one for the volume-source. Then if the TCS dependence on the source-to-detector distance is established for the point-source case and the volume-source d(V)-value is known, the TCS correction corresponding to the volume-source measuring geometry can be estimated. Experimental method and results are presented in the work too.
authors.affiliation: Faculty of Physics, St. Kliment Ohridsky, University of Sofia, 5 James Bourchier Blvd., 1164 Sofia, Bulgaria. Electronic address: boshkova@phys.uni-sofia.bg.
authors.forename: T
authors.initials: T
authors.lastname: Boshkova
keywords: Coincidence summing corrections; Gamma-ray spectrometry; Point source; Volume sources