Monte Carlo calculation of organ and effective dose rates from ground contaminated by Am-241: Results of an international intercomparison exercise

J. Eakins, C. Huet, H. Brkić, K. Capello, L. Desorgher, L. Epstein, J. G. Hunt, H. S. Kim, D. Krstic, Y. K. Lee, M. Manohari, D. Nikezic, R. H. Shukrun, D. Souza-Santos, K. Tymińska

Research output: Contribution to journalArticlepeer-review

Abstract

An intercomparison exercise is described that examines Monte Carlo modelling of anthropomorphic voxel phantoms in an idealized ground-contamination photon exposure scenario. Thirteen participants calculated and submitted organ and effective dose rates for comparison against a set of verified reference solutions. The effective dose rates are shown to agree with the reference value to within reasonable statistical uncertainties in five of the cases, though in only one of those was similar agreement also demonstrated in the evaluation of all requested organ dose rates. Orders-of-magnitude differences in doses are seen for some of the other participants, both internally within their own dataset and also relative to the reference solutions. Following limited feedback and suggestions from the organizer, up to two sets of revised solutions were resubmitted by some of the participants; these generally exhibited improved agreement, though not always. The overall observations and conclusions from this intercomparison exercise are summarized and discussed.

Original languageEnglish
Article number106649
JournalRadiation Measurements
Volume148
DOIs
StatePublished - Nov 2021
Externally publishedYes

Keywords

  • Computational dosimetry
  • Intercomparison
  • Monte Carlo
  • Photon exposures
  • Radiological protection
  • Voxel phantoms

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