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Proton and Electron Radiation

NSSDCA ID: 1962-029A-01

Mission Name: Telstar 1
Principal Investigator:Dr. Walter L. Brown


Three p-n junction, solid-state diodes separately measured protons (1) directionally in nine ranges from 2.4 to 25 MeV with an aperture of 25-deg half-angle, (2) omnidirectionally from 26 to 34 MeV, and (3) omnidirectionally greater than 50 MeV. A fourth p-n junction diode measured electrons in four energy ranges (180 to 280, 285 to 440, 390 to 615, and 635 to 990 keV) with an aperture of 20-deg half-angle. Each directional proton energy channel was sampled once every 3 min, each of the two omnidirectional proton detectors was sampled once per min, and each of the four electron energy channels was sampled once every 2 min. Accumulation times exceeded the spacecraft spin period. The instruments operated throughout the lifetime of the spacecraft. NSSDC has all the data that now exist from this investigation.

Alternate Names

  • Telstar1/ProtonandElectronRadiation


  • Space Physics: Magnetospheric Studies

Additional Information

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



NameRoleOriginal AffiliationE-mail
Dr. Walter L. BrownPrincipal InvestigatorAT&T Bell Laboratories
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