Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990stin...9020036s&link_type=abstract
Unknown
Astronomy and Astrophysics
Astronomy
Astronauts, Human Body, Mathematical Models, Organs, Radiation Dosage, Solar Flares, Solar Radiation Shielding, Estimating, Exposure, Geometry, Radiation Effects, Reliability, Solar Radiation, Spheres
Scientific paper
The radiation dose equivalents to blood-forming organs (BFO's) of the astronauts at the Martian surface due to major solar flare events are calculated using the detailed body geometry of Langley and Billings. The solar flare spectra of February 1956, November 1960, and August 1972 events are employed instead of the idealized Webber form. The detailed geometry results are compared with those based on the 5-cm sphere model which was used often in the past to approximate BFO dose or dose equivalent. Larger discrepancies are found for the later two events possibly due to the lower numbers of highly penetrating protons. It is concluded that the 5-cm sphere model is not suitable for quantitative use in connection with future NASA deep-space, long-duration mission shield design studies.
Nealy John E.
Shinn Judy L.
Wilson William J.
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