Measurement of Neutron Radiation Exposure of Commercial Airline Pilots Using Bubble Detectors
1994; Taylor & Francis; Volume: 106; Issue: 3 Linguagem: Inglês
10.13182/nt94-a34967
ISSN1943-7471
AutoresBrent J. Lewis, Richard Kosierb, T. Cousins, Donald F. Hudson, Georges Guéry,
Tópico(s)Radiation Dose and Imaging
ResumoAbstractNeutron bubble detectors have been used over a 1-yr period by commercial airline pilots from Air Canada and Air France to measure the high-altitude neutron radiation exposure produced by galactic cosmic rays. The present work yielded measurements of the neutron flux of 1.0 to 4.6 n/cm2·s, and the neutron dose equivalent rates of 1.7 to 7.7/µSv/h. These measurements are in agreement with previous studies using high-altitude aircraft and conventional neutron instrumentation. The total dose equivalents for the Air Canada flights are also consistent with predictions of the CARI code. Considering that the neutron component contributes ∼50% of the total dose equivalent, this study indicates that the annual dose for the air crew member would exceed the new recommendations of the International Commission on Radiological Protection (ICRP-60) for the general public.
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