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Solar Proton Monitor

NSSDCA ID: 1973-086A-01

Mission Name: NOAA 3
Principal Investigator:Dr. Donald J. Williams


Three solid state detectors monitored the omnidirectional fluxes of solar protons with energies above 10, 30, and 60 MeV, respectively. Two telescopes consisting of solid state detectors each measured directional fluxes of protons between 0.27 MeV and 3.2 MeV (in three intervals), protons between 3.2 and 60 MeV, protons above 60 MeV, and alpha particles between 12.5 and 32 MeV. In the polar cap region, which is of the greatest interest, the telescopes viewed parallel and perpendicular to the local magnetic field direction. An additional solid state detector measured directional fluxes of electrons of energies greater than 140 keV. This detector looked in a direction perpendicular to the orbit plane.

Alternate Names

  • NOAA3/SolarProtonMonitor


  • Space Physics: Ionospheric Studies

Additional Information

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



NameRoleOriginal AffiliationE-mail
Dr. Herbert H. SauerOther InvestigatorNOAA Environmental Research
Dr. Donald J. WilliamsPrincipal InvestigatorApplied Physics
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