Cosmic ray investigation for the Voyager missions; energetic particle studies in the outer heliosphere-And beyond

E. C. Stone, R. E. Vogt, F. B. McDonald, B. J. Teegarden, J. H. Trainor, J. Randy Jokipii, W. R. Webber

Research output: Contribution to journalArticle

101 Citations (Scopus)

Abstract

A cosmic-ray detector system (CRS) has been developed for the Voyager mission which will measure the energy spectrum of electrons from ≈3-110 MeV and the energy spectra and elemental composition of all cosmic-ray nuclei from hydrogen through iron over an energy range from ≈ 1-500 MeV/nuc. Isotopes of hydrogen through sulfur will be resolved from ≈ 2-75 MeV/nuc. Studies with CRS data will provide information on the energy content, origin and acceleration process, life history, and dynamics of cosmic rays in the galaxy, and contribute to an understanding of the nucleosynthesis of elements in the cosmic-ray sources. Particular emphasis will be placed on low-energy phenomena that are expected to exist in interstellar space and are known to be present in the outer Solar System. This investigation will also add to our understanding of the transport of cosmic rays, Jovian electrons, and low-energy interplanetary particles over an extended region of interplanetary space. A major contribution to these areas of study will be the measurement of three-dimensional streaming patterns of nuclei from H through Fe and electrons over an extended energy range, with a precision that will allow determination of anisotropies down to 1%. The required combination of charge resolution, reliability and redundance has been achieved with systems consisting entirely of solid-state charged-particle detectors.

Original languageEnglish (US)
Pages (from-to)355-376
Number of pages22
JournalSpace Science Reviews
Volume21
Issue number3
DOIs
StatePublished - Dec 1977

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heliosphere
energetic particles
cosmic ray
cosmic rays
energetics
energy
electron
energy spectra
interstellar space
interplanetary space
hydrogen
nuclei
electrons
data systems
radiation counters
detectors
nuclear fusion
solar system
particle
charged particles

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Physics and Astronomy (miscellaneous)
  • Space and Planetary Science

Cite this

Cosmic ray investigation for the Voyager missions; energetic particle studies in the outer heliosphere-And beyond. / Stone, E. C.; Vogt, R. E.; McDonald, F. B.; Teegarden, B. J.; Trainor, J. H.; Jokipii, J. Randy; Webber, W. R.

In: Space Science Reviews, Vol. 21, No. 3, 12.1977, p. 355-376.

Research output: Contribution to journalArticle

Stone, E. C. ; Vogt, R. E. ; McDonald, F. B. ; Teegarden, B. J. ; Trainor, J. H. ; Jokipii, J. Randy ; Webber, W. R. / Cosmic ray investigation for the Voyager missions; energetic particle studies in the outer heliosphere-And beyond. In: Space Science Reviews. 1977 ; Vol. 21, No. 3. pp. 355-376.
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