NASA Logo, National Aeronautics and Space Administration
NASA Space Science Data Coordinated Archive Header

Geiger Mueller Counters

NSSDCA ID: 1969-097A-06

Mission Name: Azur
Principal Investigator:Dr. Erhard Kirsch


This experiment was composed of two omnidirectional Geiger-Mueller counters used to detect protons especially after solar flares. The tubes were mounted perpendicular to one another on top of the satellite. The detector was designed to detect protons with energies E>30 MeV and E>12 MeV, but it was also capable of detecting electrons with energies E>3.2 MeV and E>0.7 MeV. The experiment worked normally until the spacecraft telemetry system malfunctioned in early July 1970.

Alternate Names

  • Azur/GeigerMuellerCounters
  • Proton Monitor EI101 (GRS-A Code)

Facts in Brief

Mass: 0.85 kg
Power (avg): 0.1 W


    Additional Information

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



    NameRoleOriginal AffiliationE-mail
    Dr. Erhard KirschPrincipal InvestigatorMax-Planck-Institut fur
    [] NASA Logo -