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Radiation Protection Dosimetry Advance Access originally published online on July 16, 2009
Radiation Protection Dosimetry 2009 136(4):311-316; doi:10.1093/rpd/ncp127
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© The Author 2009. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Modelling of radiation exposure at high altitudes during solar storms

H. Al Anid1,*, B. J. Lewis1, L. G. I. Bennett1 and M. Takada2

1 Department of Chemistry and Chemical Engineering, Royal Military College of Canada, PO Box 17000, Kingston, ON, Canada K7K 7B4
2 National Institute of Radiological Science, International Space Radiation Laboratory, 4-9-1, Anagawa, Inage-Ku, Chiba 263-8555, Japan

* Corresponding author: hani.al.anid{at}rmc.ca

A transport code analysis using Monte Carlo N-Particle eXtended code, MCNPX, has been used to propagate an extrapolated particle spectrum based on satellite measurements through the atmosphere to estimate radiation exposure during solar storms at high altitudes. Neutron monitor count rate data from stations around the world were used to benchmark the model calculations during a ground-level event (GLE). A comparison was made between the model predictions and actual flight measurements taken with various types of instruments used to measure the mixed radiation field during GLE 60. A computer code has been developed to implement the model for routine analysis.


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