Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990stin...9025031w&link_type=abstract
Unknown
Astronomy and Astrophysics
Astronomy
Astronauts, Exposure, Fluence, Mathematical Models, Organs, Radiation Dosage, Radiation Shielding, Solar Cosmic Rays, Estimating, Geomagnetism, Human Body, Magnetic Effects, Magnetic Storms, Mass Distribution, Radiation Effects, Space Shuttles
Scientific paper
A calculational model is derived for use in estimating Solar cosmic ray exposure to critical body organs in low-Earth orbit at the center of a large spherical shield of fixed thickness. The effects of the Earth's geomagnetic field and the astronauts' self-shielding are evaluated explicitly. The geomagnetic field model is an approximate tilted eccentric dipole with geomagnetic storms represented as a uniform-impressed field. The storm field is related to the planetary geomagnetic index Kp. The code is applied to the Shuttle geometry using the Shuttle mass distribution surrounding two locations on the flight deck. The Shuttle is treated as pure aluminum and the astronaut as soft tissue. Short-term, average fluence over a single orbit is calculated as a function of the location of the lines of nodes or long-term averages over all lines of nodes for a fixed inclination.
Atwell William
Cucinotta Francis A.
Nealy John E.
Shinn Judy L.
Townsend Lawrence W.
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