Computer Science
Scientific paper
Dec 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987itns...34.1251m&link_type=abstract
(IEEE, DOD, NASA, and DOE, 1987 Annual Conference on Nuclear and Space Radiation Effects, Snowmass Village, CO, July 28-31, 1987
Computer Science
2
Aerospace Environments, Dmsp Satellites, Dosimeters, Extraterrestrial Radiation, Radiation Damage, Single Event Upsets, Cosmic Rays, Earth Orbital Environments, Heavy Ions, Proton Irradiation
Scientific paper
Data from the DMSP/F7-satellite dosimeter star event counters are presented. The DMSP dosimeter star event counters measure the number of pulses that exceed set energy deposition levels (40 MeV for three detectors and 75 MeV for the fourth detector) behind four different thicknesses of aluminum shielding. The term star event is used because linear energy transfer depositions above 40 MeV can be produced by high-energy proton or heavy ion interactions with nuclei in the detector creating a star-type release of energetic secondaries. The energy deposition that creates the high energy pulses in the detectors can come either directly from incident cosmic rays, directly from high-energy protons that traverse long path lengths in the detector volume, indirectly from nuclear reactions in the detector created by incident high-energy protons, or indirectly from nuclear reactions in the vicinity of the detector that create recoiling nuclei that deposit energy in the detector. These nuclear starts and direct energy pulses create single-event upsets (SEUs) in microelectronic components in the near-Earth space environment. The properties of the star channel of the dosimeter on DMSP/F7, are described. The star count maps of the 840-km (altitude) region of space are presented.
Brautigam D. H.
Gussenhoven Susan M.
Lynch Kristina Anne
Mullen E. G.
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