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PDS Information
Find a Node - Use these links to navigate to any of the 8 publicly accessible PDS Nodes.

This bar indicates that you are within the PDS enterprise which includes 6 science discipline nodes and 2 support nodes which are overseen by the Project Management Office at NASA's Goddard Space Flight Center (GSFC). Each node is led by an expert in the subject discipline, supported by an advisory group of other practitioners of that discipline, and subject to selection and approval under a regular NASA Research Announcement.



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    Probe Science Instrument Layout
    Probe Science Instrument Layout


    The Energetic Particles Investigation (EPI) instrument operated during the pre-entry phase of the Galileo Probe. The major science objective is to study the energetic particle population in the innermost regions of the Jovian magnetosphere - within 4 radii of the cloud tops - and into the upper atmosphere. To achieve these objectives the EPI instrument made omnidirectional measurements of four different particle species - electrons, protons, alpha-particles, and heavy ions (Z > 2). Intensity profiles with a spatial resolution of about 0.02 Jupiter radii were recorded. Three different energy range channels were allocated to both electrons and protons to provide a rough estimate of the spectral index of the energy spectra. In addition to the omnidirectional measurements, sectored data were obtained for certain energy range electrons, protons, and alpha-particles to determine directional anisotropies and particle pitch angle distributions.

    References Helpful in Scoping the Mission


    The Energetic Particle Instrument Data


    Other Documentation


    Access to the Galileo Probe Data Volume


    Citing the data

    PDS recommendations for citing data sets can be found here.

    Fischer, Harald, (1996), Galileo Probe EPI Data Set, PDS Atmospheres (ATM) Node, https://doi.org/10.17189/c8ka-r620


    Publications - A listing of team members to facilitate literature searches.