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  • Other Sources  (2)
  • 1985-1989  (2)
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  • 1
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    Low altitude flux and dose measurements during two solar flare events (1987)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: The dosimeter on board the low altitude polar orbiting DMSP/F7 satellite makes dose and flux measurements for electrons with energies greater than 1.0, 2.5, 5.0 and 10.0 MeV; and for protons with energies greater than 20, 35, 51, and 75 MeV. The characteristics and performance of the dosimeter are illustrated by presenting dose and flux data taken during the solar flare proton events of February 16 and April 26, 1984.
    Keywords: SOLAR PHYSICS
    Type: Alabama Univ., Huntsville. STIP Symposium on Physical Interpretation of Solar(Interplanetary and Cometary Intervals; p 5
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    SCATHA survey of high-level spacecraft charging in sunlight (1986)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: The statistical occurrence of spacecraft charging at near-geosynchronous orbit in daylight is studied with reference to results of an experiment conducted on the SCATHA satellite. In particular, it is found that: (1) the external current that creates high negative satellite frame potentials is the high-energy electron current from the electron population with energies greater than about 30 keV; (2) the electron current to the satellite from particles with energies less than about 30 keV neither drives the frame potential nor provides the current to balance the high-energy populations; and (3) the ion current provided from the entire range of measured ions is also not the primary source of the balancing current.
    Keywords: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
    Type: AD-A165444 , AFGL-TR-86-0057 , Journal of Geophysical Research (ISSN 0148-0227); 91; 1474-149
    Format: text
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    NASA TECHNICAL REPORTS
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