Relevance of Internal Bremsstrahlung photons from 90Y decay: an experimental and Monte Carlo study

Détails

ID Serval
serval:BIB_00C926EEA932
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Relevance of Internal Bremsstrahlung photons from 90Y decay: an experimental and Monte Carlo study
Périodique
Physica medica
Auteur⸱e⸱s
Auditore L., Juget F., Italiano A., Pistone D., Nedjadi Y., Gnesin S., Amato E.
ISSN
1724-191X (Electronic)
ISSN-L
1120-1797
Statut éditorial
Publié
Date de publication
10/2021
Peer-reviewed
Oui
Volume
90
Pages
158-163
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: ppublish
Résumé
Internal Bremsstrahlung (IB) is a continuous electromagnetic radiation accompanying beta decay; however, this process is not considered in radiation protection studies, particularly when estimating exposure from beta-decaying radionuclides. The aims of the present work are: i) to show that neglecting the IB process in Monte Carlo (MC) simulation leads to an underestimation of the energy deposited in a ionization chamber, in the case of a high-energy pure beta emitter such as Yttrium-90 ( <sup>90</sup> Y), and ii) to determine the most reliable choice of source term for <sup>90</sup> Y IB to be used in MC simulations. For this radionuclide, commonly employed in nuclear medicine and radiochemistry applications, experimental data acquired with a well ionization chamber have been compared with Monte Carlo (MC) calculations carried out in the GAMOS framework. Simulations that do not include the effect of the IB process, are found to give results underestimating the experimental values by 12-14%. Consequently, two models for the IB energy spectra, previously described by Italiano et al. [1], have been implemented using MC simulation and a good agreement has been achieved with one of them. We therefore conclude that inclusion of IB process in Monte Carlo simulation packages is advisable for a more accurate and complete treatment of electromagnetic interactions.
Mots-clé
Computer Simulation, Monte Carlo Method, Photons, Radiation Protection, External radiation exposure, Internal Bremsstrahlung, Monte Carlo, Well counter, Yttrium-90
Pubmed
Web of science
Création de la notice
25/10/2021 9:29
Dernière modification de la notice
31/05/2024 7:12
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