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Radiation Protection Dosimetry Advance Access originally published online on November 15, 2006
Radiation Protection Dosimetry 2007 123(3):295-317; doi:10.1093/rpd/ncl148
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© The Author 2006. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Fluence to organ dose conversion coefficients calculated with the voxel model NORMAN-05 and the MCNPX Monte Carlo code for external monoenergetic photons from 20 keV to 100 MeV

P. Ferrari and G. Gualdrini*

ENEA-BAS-ION-IRP Radiation Protection Institute, 16 Via dei Colli, 40137 Bologna (Bo), Italy

* Corresponding author: guald{at}bologna.enea.it

Received April 10, 2006, amended June 26, 2006, accepted September 6, 2006


  Abstract

Photons conversion coefficients from 20 keV to 100 MeV have been calculated with the voxel model NORMAN-05 using the MCNPX code. Both kerma approximation and electronic transport were employed and the results compared with published data. In the near future, ICRP group DOCAL will issue a new computational model, based on the GSF—GOLEM, which is intended to be the reference adult male voxel model for ICRP. NORMAN-05 well approximates the western-caucasian standard man characteristics, in terms of body height (176 cm) and mass (73 kg) and masses of the organs. It is not intended to substitute, or to be an alternative, to the future official ICRP voxel model, but thanks to its accuracy and its ‘standard man structure’ can be useful to evaluate the intrinsic uncertainties associated with the dose quantities evaluated adopting different voxel models. For such reason data obtained with NORMAN-05 could be easily compared with those that will be derived from the future ICRP model.


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