Mathematics
Scientific paper
Oct 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994adspr..14..927g&link_type=abstract
Advances in Space Research, vol. 14, no. 10, p. 927-941
Mathematics
9
Crres (Satellite), Microelectronics, Proton Belts, Radiation Belts, Radiation Effects, Radiation Measuring Instruments, Linear Energy Transfer (Let), Mathematical Models, Radiation Dosage, Radiation Shielding
Scientific paper
The Space Radiation (SPACERAD) experiments on the Combined and Radiation Effects Satellite (CRRES) gathered 14 months of radiation particle data in an 18 degree inclination orbit between 350 km and 36000 km from July 1990 to October 1991. When compared to the NASA radiation belt models AP8 and AE8, the data show the proton model (AP8) does not take into account a second belt formed after major solar flare/shock injection events, and the electron model (AE8) is misleading, at best, in calculating dose in near-Earth orbits. The second proton belt, although softer in energy than the main proton belt, can produce upsets in proton sensitive chips and would produce significant dose in satellites orbiting in it. The MeV electrons observed on CRRES show a significant particle population above 5 MeV (not in the AE8 model) which must be included in any meaningful dose predictions for satellites operating between L-shells of 1.7 and 3.0 RE.
Brautigam D. H.
Gussenhoven Susan M.
Mullen E. G.
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