Equivalence of computer codes for calculation of coincidence summing correction factors

Abstract

The aim of the study was to check for equivalence of computer codes that can perform calculations of true coincidence summing correction factors. All calculations were performed for a set of well-defined detector and sample parameters, without any reference to empirical data. For a p-type detector model the application of different codes resulted in satisfactory agreement in the calculated correction factors. For high-efficiency geometries in combination with an n-type detector and a radionuclide emitting abundant X-rays the results were scattered.

Experimental validation of corrections factors for γ–γ and γ–X coincidence summing of 133Ba, 152Eu, and 125Sb in volume sources

“…If the correction factors of the individual software were compared with the mean of the three softwares the result would appear to be much more concurrent (3.7% deviation at the most). This approach has been used in several intercomparison studies [4][5][6]. However, it does not reveal how accurate softwares are, only how well they agree with each other.…”

“…Some previously conducted studies were designed in order to minimize differences by only comparing the theoretical correction factors (with the same detector model and decay data). Reasonable agreement between the softwares was achieved for pure γ-γ coincidence [4,5]. However, γ-X coincidences was found to be more difficult to correct for and large discrepancies were observed for some softwares [4][5][6].…”

“…Reasonable agreement between the softwares was achieved for pure γ-γ coincidence [4,5]. However, γ-X coincidences was found to be more difficult to correct for and large discrepancies were observed for some softwares [4][5][6]. This is highly unsatisfying and does not reveal which calculation code that can be considered as fit-for-purpose.…”

“…The calculation and comparison of correction factors for γ-γ and γ-X coincidences of 133 Ba and 152 Eu and different methods or softwares has been extensively investigated [4][5][6][7][8][9]. Agarwal et al [10,11] compares the correction factors of 125 Sb with MCNP to experimental data.…”

Characterisation of a radionuclide specific laboratory detector system for the metallurgical industry by Monte Carlo simulations

“…However, due to different implementations of the method, an inter-comparison study can bring useful conclusions (Vidmar et al, 2014). For each of the three sources (Table 1), the TCSC factors were calculated for 1 or 2 photon energies of six selected radionuclides of interest in the metallurgical industry: 60 Co,192 Ir,214 Bi,214 Pb,228 Ac, and 208 Tl.…”