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Radiation Protection Dosimetry 2005 116(1-4):320-326; doi:10.1093/rpd/nci024
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© The Author 2005. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Aircrew dosimetry using the predictive code for aircrew radiation exposure (PCAIRE)

B. J. Lewis, L. G. I. Bennett*, A. R. Green, A. Butler, M. Desormeaux, F. Kitching, M. J. McCall, B. Ellaschuk and M. Pierre

Department of Chemistry and Chemical Engineering, Royal Military College of Canada, P.O. Box 17000, Stn Forces, Kingston, Ontario, Canada K7K 7B4

* Corresponding author: bennett_1{at}rmc.ca

During 2003, a portable instrument suite was used to conduct cosmic radiation measurements on 49 jet-altitude flights, which brings the total number of in-flight measurements by this research group to over 160 flights since 1999. From previous measurements, correlations have been developed to allow for the interpolation of the dose-equivalent rate for any global position, altitude and date. The result was a Predictive Code for Aircrew Radiation Exposure (PCAIRE), which has since been improved. This version of the PCAIRE has been validated against the integral route dose measurements made at commercial aircraft altitudes during the 49 flights. On most flights, the code gave predictions that agreed to the measured data (within ±25%), providing confidence in the use of PCAIRE to predict aircrew exposure to galactic cosmic radiation. An empirical correlation, based on ground-level neutron monitoring data, has also been developed for the estimation of aircrew exposure from solar energetic particle (SEP) events. This model has been used to determine the significance of SEP exposure on a theoretical jet altitude flight during GLE 42.


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