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Cosmic-Ray Spectra

NSSDC ID: 1972-012A-12
Mission Name: Pioneer 10
Principal Investigator: Dr. Frank B. McDonald

Description

This experiment consisted of three multi-element solid-state telescopes, all looking normal to the spacecraft spin axis. The high-energy telescope (HET) consisted of five collinear sensors, and measured stopping particles (Z = 1 to 8) in the energy range 20 to 50 MeV/nucleon and penetrating particles in the range 50 to 800 MeV/nucleon. Charge resolution for penetrating particles was possible up to 200 MeV/nucleon. The first low-energy telescope (LET-I) had four elements and measured stopping (Z = 1 to 8) particles in the energy range 3 to 32 MeV/nucleon. The second low-energy telescope (LET-II) had three elements and measured stopping electrons between 50 and 1000 keV and stopping protons between 50 keV and 20 MeV. For each telescope, count rates were obtained for each of several sensor coincidence-anticoincidence modes. Some of the rates from each telescope were sectored into eight octants in the spacecraft spin plane. In addition, three-sensor pulse-height analysis, with priority schemes favoring the analysis of heavier particles, was associated with each telescope.

Funding Agency

  • NASA-Office of Space Science (United States)

Disciplines

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

Additional Information

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

 

Personnel

NameRoleOriginal AffiliationE-mail
Prof. William R. WebberOther InvestigatorUniversity of New Hampshirebwebber@nmsu.edu
Dr. James H. TrainorOther InvestigatorNASA Goddard Space Flight Center 
Dr. Kenneth G. McCrackenOther InvestigatorCommonwealth Scientific and Industrial Research Orqanisation 
Dr. Frank B. McDonaldPrincipal InvestigatorNASA Goddard Space Flight Center 
Dr. Edward C. RoelofOther InvestigatorApplied Physics Laboratoryedmond.roelof@jhuapl.edu
Dr. Bonnard J. TeegardenOther InvestigatorNASA Goddard Space Flight Centerteegarden@tgrs.gsfc.nasa.gov
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