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Citation Prettyman, T.H., Dawn GRaND absorption map, DAWN-A-GRAND-5-VESTA-ABSORPTION-V1.0, NASA Planetary Data System, 2013.
Digital Object Identifier (DOI) Unable to retrieve DOI information. Please contact the PDS Help Desk for assistance.
Data Set Abstract A global map of a unitless compositional parameter, delta-C_perpendicular (DCP), and propagated 1-sigma uncertainties is provided. DCP varies linearly with the macroscopic thermal neutron absorption cross section of Vesta's regolith. An equation for converting tabulated DCP values to absorption units is provided in this document. DCP was determined from thermal and epithermal neutron counting rates measured by the NASA Dawn mission's Gamma Ray and Neutron Detector (GRaND) while in low altitude mapping orbit, about 210 km from Vesta's surface. The measurements are representative of Vesta's bulk regolith composition to depths of a few decimeters with a spatial resolution of about 300-km full-width-at-half-maximum of arc length on the surface. The methods used to determine neutron absorption are described by PRETTYMANETAL2013.
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    Additional Information
    Mission Information DAWN MISSION TO VESTA AND CERES
    Data Set Information DAWN-A-GRAND-5-VESTA-ABSORPTION-V1.0
    Instrument Host Information DAWN
    Instrument Information GRAND
    Target Information 4 VESTA