Model of ambient dose equivalent for radium contamination: Dependence on the geometry of the source.

Détails

ID Serval
serval:BIB_18375912FE53
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Model of ambient dose equivalent for radium contamination: Dependence on the geometry of the source.
Périodique
Journal of environmental radioactivity
Auteur(s)
Desorgher L., Bochud F., Flury T., Murith C., Baechler S., Bailat C.
ISSN
1879-1700 (Electronic)
ISSN-L
0265-931X
Statut éditorial
Publié
Date de publication
12/2018
Peer-reviewed
Oui
Volume
192
Pages
698-708
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: ppublish
Résumé
Industrial activities involving radium sources, such as watchmaking, were still common up until the 1960s. They produced contaminations in building materials and the soil in a large variety of geometries. The potential remediation of such places requires instruments that are properly calibrated as well as adequate procedures. We have developed a model that estimates the rate of ambient dose equivalent H˙ <sup>∗</sup> (10) at 10 cm and 1 m from a source of <sup>226</sup> Ra and its progeny in both the soil or the building materials. Our model, described here, uses Monte Carlo (GEANT4) computed yield functions of H˙ <sup>∗</sup> (10) per unit activity induced by point-like sources in different contaminated materials. Fit functions of the yield curve of H˙ <sup>∗</sup> (10) are provided for outdoor contamination. The model can be used for any geometrical activity distribution and we present an example showing the dependency of H˙ <sup>∗</sup> (10) on the diameter and the depth profile of the sources, for both outdoor and indoor contamination.
Mots-clé
Models, Chemical, Monte Carlo Method, Radium/analysis, Dose calculation, Monte-Carlo model, Radium
Pubmed
Web of science
Création de la notice
26/04/2018 19:08
Dernière modification de la notice
05/11/2018 7:26
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