Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993stin...9419714d&link_type=abstract
Thesis - Tech. Univ. Munich Max-Planck-Inst. für Physik und Astrophysik, Garching (Germany). Inst. für Extraterrestrische Physik
Astronomy and Astrophysics
Astronomy
Astronomical Satellites, Background Radiation, Charge Coupled Devices, Rosat Mission, Spaceborne Astronomy, X Ray Astronomy, Earth Magnetosphere, Eccentric Orbits, Electron Scattering, Exosat Satellite, Geocentric Coordinates, International Sun Earth Explorer 1, Ionizing Radiation, Radiation Belts, Secondary Cosmic Rays
Scientific paper
Detailed results concerning a possible particle induced background in highly eccentric orbital trajectories for future X-ray satellite missions using charge coupled device detectors are presented. The different components were characterized and an order of magnitude was given. Several methods were proposed for the reduction of isolated component effects. Existing numerical models of the radiation belt for electrons and protons were examined and assessed. Background events, which are caused by minimal ionizing particles, could be recognized by appropriate discrimination methods, such as neighbor anticoincidence, and were differentiated from X-ray events. Electrons scattered by the mirrors on the detectors are ascertained to strongly contribute to the background, so that some scientific observations can be severely limited or even impossible. An accumulation of background sources by induced radioactivity is found to be negligible in the sensitive energy area of the detector.
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