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  • 1
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    HIEN-LO: An experiment for charge determination of cosmic rays of interplanetary and solar origin (1988)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: The experiment is designed to measure the heavy ion environment at low altitude (HIEN-LO) in the energy range 0.3 to 100 MeV/nucleon. In order to cover this wide energy range a complement of three sensors is used. A large area ion drift chamber and a time-of-flight telescope are used to determine the mass and energy of the incoming cosmic rays. A third omnidirectional counter serves as a proton monitor. The analysis of mass, energy and incoming direction in combination with the directional geomagnetic cut-off allows the determination of the ionic charge of the cosmic rays. The ionic charge in this energy range is of particular interest because it provides clues to the origin of these particles and to the plasma conditions at the acceleration site. The experiment is expected to be flown in 1988/1989.
    Keywords: ASTRONAUTICS (GENERAL)
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    SAMPEX mission overview (1990)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: The Solar, Anomalous, and Magnetospheric Particle Explorer SAMPEX will carry out energetic particle studies of outstanding scientific questions in the fields of space plasma physics, solar physics, magnetospheric and middle atmospheric physics, and cosmic ray physics. SAMPEX will measure the electron and ion composition of energetic particle populations from about 0.4 MeV/nucleon to hundreds of MeV/nucleon from a zenith-pointing small satellite in near-polar orbit. While over the magnetic poles, the instruments will study the composition of anomalous cosmic rays, solar energetic particles, and Galactic cosmic rays. At lower magnetic latitudes, geomagnetic cutoff effects will allow determination of the ionization state of these particles at energies much higher than can be studied from interplanetary spacecraft. At subauroral latitudes, SAMPEX will also observe precipitating relativistic magnetospheric electrons, which undergo important intertactions within the middle atmosphere.
    Keywords: ASTRONAUTICS (GENERAL)
    Format: text
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    NASA TECHNICAL REPORTS
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