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Radiation Protection Dosimetry 45:145-162 (1992)
© 1992 Oxford University Press

The Exposure of Aircraft Crews to Radiations of Extraterrestrial Origin

K. O'Brien, W. Friedberg, F.E. Duke, L. Snyder, E.B. Darden Jr. and H.H. Sauer

Galactic cosmic rays and energetic particles from solar particle events produce radiation levels at aircraft altitudes that have recently become a matter of concern to relevant government organisations, aircraft crews and airline management. The radiation levels have been calculated throughout the atmosphere using the code LUIN and the results incorporated in the code CARRIER which will integrate the dose equivalent rates to which a flight has been exposed from takeoff to landing, yielding the total dose equivalent to the crew and passengers. Radiation dose equivalents for a number of air carrier routes have been determined from this source and corresponding health risks have been calculated using standard risk coefficients. Radiation dose equivalents have been calculated for a number of solar particle events, and in detail for the 29 September 1989 event, all at high latitudes, for a range of aircraft altitudes. Owing to their unpredictability and variability, solar particle events have not been incorporated into CARRIER. However, once an event has occurred and its spectrum has been determined, the worldwide time-dependent distribution of the resulting dose equivalents can be calculated.


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