Physics – Medical Physics
Scientific paper
May 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989aipc..186..381w&link_type=abstract
HIGH-ENERGY RADIATION BACKGROUND IN SPACE. AIP Conference Proceedings, Volume 186, pp. 381-392 (1989).
Physics
Medical Physics
Aerospace Bio- And Medical Physics
Scientific paper
Lifetime observations on a group of rhesus monkeys indicate that life expectancy loss from exposure to protons in the energy range encountered in the Van Allen belts and solar proton events can be correlated with the dose and energy of radiation. The primary cause of life shortening is nonleukemic cancers. Radiation also increased the rise of endometriosis (an abnormal proliferation of the lining of the uterus in females). Other effects associated with radiation exposures are lowered glucose tolerance and increased incidence of cataracts. Calculations of the relative risk of fatal cancers in the irradiated subjects reveal that the total body surface dose required to double the risk of death from cancer over a 20-year post exposure period varies with the linear energy transfer (LET) of the radiation. The ability to determine the integrated dose and LET spectrum in space radiation exposures of humans is, therefore, critical to the assessment of lifetime cancer risk.
Cordts R. E.
Cox A. B.
Hardy K. A.
Salmon Y. L.
Woods D. H.
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