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Cosmic-Ray Spectra

NSSDCA ID: 1973-019A-12

Mission Name: Pioneer 11
Principal Investigator:Dr. Frank B. McDonald


This experiment consisted of three 3-element telescopes, all looking normal to the spacecraft spin axis. A bidirectional telescope measured 20- to 800-MeV/nucleon particles with 5 to 10% energy resolution. Another telescope measured 3- to 22-MeV/nucleon particles with 5% resolution. These two telescopes measured particles with Z values between 1 and 8. The third telescope measured 50-keV to 1-MeV electrons and 50-keV to 20-MeV protons with 20% resolution. Data include the interplanetary region.

Alternate Names

  • Pioneer11/Cosmic-RaySpectra
  • urn:nasa:pds:context:instrument:crs.p11
  • urn:nasa:pds:context:instrument:crt.p11

Funding Agency

  • NASA-Office of Space Science (United States)


  • Planetary Science: Fields and Particles
  • Space Physics: Heliospheric Studies

Additional Information

Questions and comments about this experiment can be directed to: Dr. John F. Cooper



NameRoleOriginal AffiliationE-mail
Dr. Bonnard J. TeegardenOther InvestigatorNASA Goddard Space Flight
Dr. James H. TrainorOther InvestigatorNASA Goddard Space Flight Center
Prof. William R. WebberOther InvestigatorUniversity of New
Dr. Kenneth G. McCrackenOther InvestigatorCommonwealth Scientific and Industrial Research Orqanisation
Dr. Edward C. RoelofOther InvestigatorApplied Physics
Dr. Frank B. McDonaldPrincipal InvestigatorNASA Goddard Space Flight Center
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