Physics
Scientific paper
Jul 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003adspr..32...59b&link_type=abstract
Advances in Space Research, Volume 32, Issue 1, p. 59-66.
Physics
Scientific paper
The assessment of exposure to cosmic radiation on board aircraft is one of the preoccupations of organizations responsible for radiation protection. The cosmic radiation particle flux increases with altitude and latitude and depends on the solar activity. The radiation exposure has been estimated on several airlines using transatlantic, Siberian and transequatorial routes on board subsonic and supersonic aircraft, to illustrate the effect of these parameters: Measurements have been obtained with a tissue equivalent proportional counter using the microdosimetric technique. Data have been collected at maximum solar activity in 1991-1992 and at minimum in 1996-1998. The lowest mean dose rate measured was 3 μSv/h during a Paris-Buenos Aires flight in 1991; the highest was 6.6 μSv/h during a Paris-Tokyo flight using a Siberian route and 9.7 μ Sv/h on Concorde in 1996-1997. The mean quality factor is around 1.8. The corresponding annual effective dose, based on 700 hours of flight for subsonic aircraft and 300 hours for Concorde, can be-estimated between 2 rnSv for least-exposed routes and 5 mSv for more exposed routes.
Bottollier-Depois J.-F.
Bouisset P.
Chau Q.
Kerlau G.
Lebaron-Jacobs L.
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