Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Solar particle dose rate buildup and distribution in critical body organs

Conference ·
OSTI ID:79450
; ;  [1]
  1. Armed Forces Radiobiology Research Inst., Bethesda, MD (United States)
Human body organs have varying degrees of radiosensitivity as evidenced by radioepidemiologic tables. The major critical organs for both the male and female that have been identified include the lung, thyroid, stomach, and breast (female). Using computerized anatomical models of the 50th percentile United States Air Force male and female, we present the self-shielding effects of these various body organs and how the shielding effects change as the location (dose point) in the body varies. Several major solar proton events from previous solar cycles and several events from the current 22nd solar cycle have been analyzed. The solar particle event rise time, peak intensity, and decay time vary considerably from event to event. Absorbed dose and dose equivalent rate calculations and organ risk assessment data are presented for each critical body organ. These data are compared with the current NASA astronaut dose limits as recommended by the National Council on Radiation Protection and Measurements.
Research Organization:
National Aeronautics and Space Administration, Hampton, VA (United States). Langley Research Center
OSTI ID:
79450
Report Number(s):
CONF-9110312--
Country of Publication:
United States
Language:
English