The effect of the fluence-to-dose conversion coefficients upon the dose estimation to cosmic radiation

The MCNPX Monte Carlo code of Los Alamos National Laboratory was employed to calculate the organ doses in the anthropomorphic phantoms ADAM and EVA irradiated by monoenergetic fields of neutrons, protons, electrons, photons, charged pions and muons especially in the energy range of practical interest for air crew dose assessment. From the weighted organ doses the fluence-to-effective dose conversion coefficients were calculated according to ICRP recommendations. Using this consistent set of conversion coefficients along with the particle spectra for the specific geographic position and altitude the dose components can be determined to which an individual is exposed along an aviation route. The effect of the different fluence-to-dose conversion coefficients used for the dose estimation to cosmic radiations is discussed.