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Monte Carlo code for microdosimetry of inhaled alpha emitters


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Aubineau-Laniece I. (1), Pihet P. (1), Winkler R. (2), Hofmann W. (2), Charlton DE. (3).
Radiat Prot Dosimetry 99(1-4):463-8, 2002

Type de document > *Article de revue

Mots clés > dosimétrie interne, microdosimétrie

Unité de recherche > Laboratoire d'évaluation et de modélisation de la dose interne (LEMDI)

Auteurs > PIHET Pascal

Date de publication > 01/04/2002

Résumé

A Monte Carlo code has been developed to calculate the local energy deposited by alpha emitters deposited on the inner surface in the lung airway. Developed to deal further with airway bifurcations, this code has been as a first step validated in a cylindrical airway configuration by comparison with well-established analytical codes in the case of contamination of bronchiolar airways with actinides. The code has then been applied to the study of uniform and non-uniform contamination of cylindrical bronchial airways by radon progeny in indoor and mine exposure conditions. In addition to the microdosimetric spectra, the average microdosimetric parameters (zp, n, z) have been evaluated. The work currently in progress consists in adapting this developed Monte Carlo code to the configuration of an airway bifurcation with realistic particles deposition.

(1) IRSN
BP 17, 92262 Fontenay-aux-Roses cedex, France

(2) Institute of Physics and Biophysics, University of Salzburg, Austria

(3) Physics Department, Concordia University, Montreal, Canada