Radiation dose to critical body organs for October 1989 proton event

Details Radiation dose to critical body organs for October 1989 proton event Radiation dose to critical body organs for October 1989 proton event

Sep 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992stin...9312876s&link_type=abstract

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Mathematics

Logic

Astronauts, Biological Effects, Computerized Simulation, Radiation Dosage, Radiation Hazards, Solar Corpuscular Radiation, Solar Flares, Anatomy, Goes 7, Proton Energy, Radiation Protection, Radiation Shielding

Scientific paper

The Geostationary Operational Environmental Satellite (GOES-7) provides high-quality environmental data about the temporal development and energy characteristics of the protons emitted during a solar particle event. The GOES-7 time history of the hourly averaged integral proton flux for various particle kinetic energies are analyzed for the solar proton event occurring October 19-29, 1989. This event is similar to the August 1972 event that has been widely studied to estimate free-space and planetary radiation-protection requirements. By analyzing the time-history data, the dose rates, which can vary over many orders of magnitude in the early phases of the flare, can be estimated as well as the cumulative dose as a function of time. When basic transport results are coupled with detailed body organ thickness distributions calculated with the Computerized Anatomical Man and Computerized Anatomical Female models, the dose rates and cumulative doses to specific organs can be predicted. With these results, the risks of cancer incidence and mortality are estimated for astronauts in free space protected by various water shield thicknesses.

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