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Citation |
Prettyman, T.H., Dawn GRaND hydrogen map,
DAWN-A-GRAND-5-CERES-TPE-COUNTS-V1.0, NASA Planetary Data
System, 2017. |
Digital Object Identifier (DOI) |
Unable to retrieve DOI information. Please contact the PDS Help Desk for assistance.
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Data Set Abstract |
A global map thermal+epithermal
neutron counting rates binned on twenty-degree quasi-equal-area
pixels is provided. The map was determined from a time series
of the rate of neutron capture by lithium in the lithium-loaded
glass scintillator, part of the +Z phoswich sensor on Dawn's Gamma
Ray and Neutron Detector (GRaND). Neutrons in the thermal and
epithermal energy range contribute to the reaction. The data were
acquired 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. |
Search/Access Data |
SBN PSI WEBSITE
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Additional Information |
Mission Information |
DAWN MISSION TO VESTA AND CERES
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Data Set Information |
DAWN-A-GRAND-5-CERES-TPE-COUNTS-V1.0 |
Instrument Host Information |
DAWN
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Instrument Information |
GRAND
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Target Information |
1 CERES
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