PDS3













    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


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