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Solar and Galactic Alpha Particles and Protons

NSSDCA ID: 1968-041A-03

Mission Name: ESRO 2
Principal Investigator:Prof. Harry Elliot


This experiment was designed to measure the time dependance of the flux ratio of protons and alpha particles of the same magnetic rigidity (0.4 to 0.8 GV) which are emitted from the sun during energetic particle events. The detector was a telescope consisting of two scintillators, two proportional counters, and a Cerenkov counter. The detector viewing angle with respect to the spin axis of the satellite was 90 deg. The experiment performed normally throughout the mission except for some difficulties encountered during the period July to September 1968. The spacecraft decayed from orbti on May 8, 1971.

Alternate Names

  • ESRO2/SolarandGalacticAlphaParticlesandProtons
  • S-28


    Additional Information

    Questions and comments about this experiment can be directed to: Coordinated Request and User Support Office



    NameRoleOriginal AffiliationE-mail
    Dr. Alastair C. DurneyOther InvestigatorESA-European Space Research and Technology Centre
    Dr. John J. QuenbyOther InvestigatorImperial
    Prof. Harry ElliotPrincipal InvestigatorImperial College
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