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Cosmic-Ray Energy Spectrum, H-Fe 30 MeV/n - 15 GeV/n, Electron: 5-400 MeV

NSSDC ID: 1978-079A-06
Mission Name: ISEE 3
Principal Investigator: Prof. Peter Meyer


This experiment was designed to study particle propagation within the solar system and the properties of the interplanetary medium. The experiment resolved electrons (differential spectrum from 5 to 400 MeV) and nuclei from protons to the iron group (differential spectra and relative abundances from 30 to 15,000 MeV/nucleon). A charged-particle telescope was used to make these measurements. It consisted of three solid-state detectors, a gas Cerenkov counter, a CsI scintillation detector, two plastic scintillation counters, and a quartz Cerenkov counter. The design of the telescope was based on that used in experiment 68-014A-09 for OGO 5.

Facts in Brief

Mass: 9.1 kg
Power (avg): 4.0 W

Funding Agency

  • NASA-Office of Space Science (United States)


  • Space Physics: Heliospheric Studies

Additional Information

Questions or comments about this experiment can be directed to: Dr. H. Kent Hills.



NameRoleOriginal AffiliationE-mail
Prof. Peter MeyerPrincipal InvestigatorUniversity of Chicago 
Prof. Paul A. EvensonOther InvestigatorUniversity of

Selected References

Meyer, P., and P. Evenson, University of Chicago cosmic ray electrons and nuclei experiment on the H spacecraft, IEEE Trans. Geosci. Electron., GE-16, No. 3, 180-185, July 1978.

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