Consistency checks of results from a Monte Carlo code intercomparison for emitted electron spectra and energy deposition around a single gold nanoparticle irradiated by X-rays
Résumé
Organized by the European Radiation Dosimetry Group (EURADOS), a Monte Carlo code intercomparison exercise
was conducted where participants simulated the emitted electron spectra and energy deposition around a
single gold nanoparticle (GNP) irradiated by X-rays. In the exercise, the participants scored energy imparted in
concentric spherical shells around a spherical volume filled with gold or water as well as the spectral distribution
of electrons leaving the GNP. Initially, only the ratio of energy deposition with and without GNP was to be
reported. During the evaluation of the exercise, however, the data for energy deposition in the presence and
absence of the GNP were also requested. A GNP size of 50 nm and 100 nm diameter was considered as well as two
different X-ray spectra (50 kVp and 100 kVp). This introduced a redundancy that can be used to cross-validate
the internal consistency of the simulation results. In this work, evaluation of the reported results is presented in
terms of integral quantities that can be benchmarked against values obtained from physical properties of the
radiation spectra and materials involved. The impact of different interaction cross-section datasets and their
implementation in the different Monte Carlo codes is also discussed.
Domaines
Physique [physics]
Origine : Fichiers produits par l'(les) auteur(s)
