Radiation environment measurements and single event upset observations in sun-synchronous orbit

Details Radiation environment measurements and single event upset observations in sun-synchronous orbit Radiation environment measurements and single event upset observations in sun-synchronous orbit

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991itns...38.1700d&link_type=abstract

(1991 IEEE Annual Conference on Nuclear and Space Radiation Effects, 28th, San Diego, CA, July 15-19, 1991, Proceedings. A92-240

Computer Science

6

Extraterrestrial Radiation, Radiation Measurement, Single Event Upsets, Synchronous Satellites, Cosmic Rays, Earth Orbital Environments, Radiation Dosage, Radiation Effects, Space Platforms

Scientific paper

Analysis of data from the Cosmic Radiation Environment and Dosimetry experiment (CREDO) carried in sun-synchronous polar orbit on UoSat-3 shows the influence of cosmic rays, trapped protons, and solar particles and allows comparison with device behavior. For the quiet-time cosmic ray environment, a comparison has been made between CREDO count rates as a function of LET and the predicted count rate (for several values of rigidity) using the Adams model and applying a full treatment to the isotropic pathlength distribution in the 1 sq cm by 300 micron diodes. Two periods of very intense solar activity have been observed from the data set to date; an analysis of the count rate LET spectra during this event reveals that in the 2-3 GV rigidity range, counts are enhanced up to 103 MeV/(g/sq cm) and that solar flare effects are observed for rigidity values up to 6-7 GV. A CREDO count rate contour map of the South Atlantic Anomaly at 800 km altitude has been constructed from frequent UoSat-3 traversals of this region.

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