Coincidence summing corrections using PENELOPE/PENNUC Monte Carlo code for volume sources of different densities

N Salpadimos; K Karfopoulos; I Seimenis; C Potiriadis

doi:10.1016/j.apradiso.2022.110589

Coincidence summing corrections using PENELOPE/PENNUC Monte Carlo code for volume sources of different densities

Appl Radiat Isot. 2023 Feb:192:110589. doi: 10.1016/j.apradiso.2022.110589. Epub 2022 Dec 1.

Authors

N Salpadimos¹, K Karfopoulos², I Seimenis³, C Potiriadis²

Affiliations

¹ Environmental Radioactivity Monitoring Department, Greek Atomic Energy Commission (EEAE), Greece; Medical School, National and Kapodistrian University of Athens, Greece. Electronic address: [email protected].
² Environmental Radioactivity Monitoring Department, Greek Atomic Energy Commission (EEAE), Greece.
³ Medical School, National and Kapodistrian University of Athens, Greece.

PMID: 36493678
DOI: 10.1016/j.apradiso.2022.110589

Abstract

This work aims at providing a Monte-Carlo based methodology for calculating true coincidence correction (TCC) factors for volume sources of varying density. All simulations were carried out using the most recent version of Monte Carlo code PENELOPE. The main program PENMAIN was used for the calculation of full energy peak efficiencies. The subroutine PENNUC was utilized for the same calculation while taking summation effects into account. It was applied to Eu-152 and Cs-134 volume sources of 9 different densities, whilst the effect of the source's density on the TCC factor was investigated. There are differences between current results and the ones calculated by the TrueCoinc software. A relative bias up to 15% was observed, while the mean relative bias was 4.5%. The different approaches between the two codes could explain these deviations.

Keywords: Monte Carlo; PENELOPE; True coincidence.

MeSH terms

Cesium Radioisotopes*
Monte Carlo Method
Radiometry* / methods
Software

Substances

Cesium-134
Cesium Radioisotopes