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Energetic Particle Investigation (EPI)

NSSDCA ID: 1989-084E-07

Mission Name: Galileo Probe
Principal Investigator:Dr. Harald M. Fischer


The Galileo Energetic Particle Investigation (EPI) had as its primary goal to study the energetic particle population in the Jovian magnetosphere from a distance of 5 Jovian radii down to the top of Jupiter's atmosphere. To achieve this, the EPI made measurements of four different species of particles (electrons, protons, alpha particles, and Z > 2 ions) in eight different channels (three each electron and proton, one each alphas and heavy ions).

The EPI shared data processing and formatting electronics with the LRD instrument.

Alternate Names

  • EPI
  • GalileoProbe/EPI
  • urn:nasa:pds:context:instrument:gp.epi

Funding Agency

  • NASA-Office of Space Science (United States)


  • Planetary Science: Fields and Particles

Additional Information

Questions and comments about this experiment can be directed to: Dr. Edwin V. Bell, II



NameRoleOriginal AffiliationE-mail
Dr. Louis J. LanzerottiCo-InvestigatorAT&T Bell
Prof. Gerd H. WibberenzCo-InvestigatorUniversitat
Dr. Harald M. FischerGeneral ContactUniversitat
Dr. Harald M. FischerPrincipal InvestigatorUniversitat

Selected References

  • Fischer, H. M., et al., Energetic particle investigation (EPI), Space Sci. Rev., 60, No. 1-4, 79-90, doi:10.1007/978-94-011-2512-3_3, May 1992.
  • Fischer, H. M., et al., High-energy charged particles in the innermost jovian magnetosphere, Science, 272, No. 5263, 856-858, doi:10.1126/science.272.5263.856, May 1996.
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