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Absorbed fraction and dose conversion coefficients of alpha particles for radon dosimetry

Physics in Medicine and Biology, ISSN: 0031-9155, Vol: 46, Issue: 7, Page: 1963-1974
2001
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Article Description

The sensitivity to different relevant parameters of the absorbed fraction of alpha particles emitted from the Rn chain in sensitive cells of the tracheo-bronchial tree have been investigated. The structure of the airway wall given by ICRP (ICRP66) has been adopted and employed in the present calculations. The source thickness (mucous gel and sol + cilia), target layer thickness and the depth of the sensitive layers have been varied within reasonable ranges around the default values recommended by ICRP66. The results have shown that the depth of the sensitive layers is the most important parameter in calculating the absorbed fraction. In addition, dose conversion coefficients were calculated and presented along with the absorbed fractions.

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