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Radiation Protection Dosimetry Advance Access originally published online on August 23, 2009
Radiation Protection Dosimetry 2009 136(4):317-323; doi:10.1093/rpd/ncp159
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© The Author 2009. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Comparison of codes assessing galactic cosmic radiation exposure of aircraft crew

J. F. Bottollier-Depois1,*, P. Beck2, B. Bennett3, L. Bennett3, R. Bütikofer4, I. Clairand1, L. Desorgher5, C. Dyer6, E. Felsberger7, E. Flückiger4, A. Hands6, P. Kindl8, M. Latocha2, B. Lewis3, G. Leuthold9, T. Maczka9, V. Mares9, M. J. McCall10, K. O'Brien11, S. Rollet2, W. Rühm9 and F. Wissmann12

1 Institute for Radiological Protection and Nuclear Safety, F-92262 Fontenay-aux-Roses, France
2 Department Health and Environment, ARC, Austrian Research Centers, A-2444 Seibersdorf, Austria
3 Royal Military College, Kingston, ON, Canada, K7K 7B4
4 University of Bern, Bern, Switzerland
5 SpaceIT GmbH, Bern, Switzerland
6 Aerospace Division, QinetiQ, Farnborough, UK
7 IASON GmbH, Feldkirchner Straße 4, A-8054 Graz-Seiersberg, Austria
8 Institute for Material Physics, Graz University of Technology, A-8010 Graz, Austria
9 Helmholz Zentrum München, Institute of Radiation Protection, 85758 Neuherberg, Germany
10 PCaire Inc., 38 Colonnade Rd, Ottawa, Canada
11 Department of Physics and Astronomy, Northern Arizona University, Flagstaff, AZ 86011-6010, USA
12 Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany

* Corresponding author: jeanfrancois.bottollier{at}irsn.fr

The assessment of the exposure to cosmic radiation onboard aircraft is one of the preoccupations of bodies responsible for radiation protection. Cosmic particle flux is significantly higher onboard aircraft than at ground level and its intensity depends on the solar activity. The dose is usually estimated using codes validated by the experimental data. In this paper, a comparison of various codes is presented, some of them are used routinely, to assess the dose received by the aircraft crew caused by the galactic cosmic radiation. Results are provided for periods close to solar maximum and minimum and for selected flights covering major commercial routes in the world. The overall agreement between the codes, particularly for those routinely used for aircraft crew dosimetry, was better than ±20 % from the median in all but two cases. The agreement within the codes is considered to be fully satisfactory for radiation protection purposes.


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