Global map of corrected 7.6 MeV gamma ray counting rates measured by the NASA Dawn mission's Gamma Ray and Neutron Detector from low altitude [PRETTYMANETAL2017].

 
Citation Prettyman, T.H., Dawn GRaND hydrogen map, DAWN-A-GRAND-5-CERES-TPE-COUNTS-V1.0, NASA Planetary Data System, 2017.
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Data Set Abstract A global map of gamma ray counting rates binned on twenty-degree quasi-equal-area pixels is provided. The map was determined from a time series of net counting rates for the 7.6 MeV gamma ray peak produced by neutron capture with Fe within Ceres' regolith. The data were acquired by Dawn's Gamma Ray and Neutron Detector (GRaND) while in low altitude mapping orbit, about 385 km from Ceres' surface (about 0.8 body radii altitude). Prior to mapping, the time series counting data were subjected to corrections for variations in the flux of galactic cosmic rays and measurement geometry, as described by PRETTYMANETAL2017.
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    Additional Information
    Mission Information DAWN MISSION TO VESTA AND CERES
    Data Set Information DAWN-A-GRAND-5-CERES-IRON-COUNTS_V1.0
    Instrument Host Information DAWN
    Instrument Information GRAND
    Target Information 1 CERES