Proton depth dose distribution: 3-D calculation of dose distributions from solar flare irradiation

Details Proton depth dose distribution: 3-D calculation of dose distributions from solar flare irradiation Proton depth dose distribution: 3-D calculation of dose distributions from solar flare irradiation

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990tamu.rept.....l&link_type=abstract

Interim Report, May - Nov. 1988 Texas A&M Univ., College Station.

Mathematics

Logic

Computerized Simulation, Physiological Effects, Proton Irradiation, Radiation Dosage, Radiation Effects, Rotation, Solar Flares, Eye (Anatomy), Head (Anatomy), Organs, Radiation Distribution, Solar Activity, Solar Cosmic Rays, Three Dimensional Motion

Scientific paper

Relative depth dose distribution to the head from 3 typical solar flare proton events were calculated for 3 different exposure geometries: (1) single directional radiation incident upon a fixed head; (2) single directional radiation incident upon head rotating axially (2-D rotation); and (3) omnidirectional radiation incident upon head (3-D rotation). Isodose distributions in the transverse plane intersecting isocenter are presented for each of the 3 solar flare events in all 3 exposure geometries. In all 3 calculation configurations the maximum predicted dose occurred on the surface of the head. The dose at the isocenter of the head relative to the surface dose for the 2-D and 3-D rotation geometries ranged from 2 to 19 percent, increasing with increasing energy of the event. The calculations suggest the superficially located organs (lens of the eye and skin) are at greatest risk for the proton events studied here.

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