The MESSENGER Gamma-Ray Spectrometer: Calibration and operations
| Autor: | R. D. Starr, Sean C. Solomon, John O. Goldsten, Edgar A. Rhodes, Patrick N. Peplowski, Larry G. Evans |
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| Rok vydání: | 2017 |
| Předmět: |
Physics
Elemental composition 010504 meteorology & atmospheric sciences Spacecraft Spectrometer business.industry Gamma ray spectrometer Astrophysics::High Energy Astrophysical Phenomena fungi chemistry.chemical_element Astronomy and Astrophysics 01 natural sciences Mercury (element) chemistry Space and Planetary Science Physics::Space Physics 0103 physical sciences Calibration Astrophysics::Earth and Planetary Astrophysics business 010303 astronomy & astrophysics 0105 earth and related environmental sciences Remote sensing |
| Zdroj: | Icarus. 288:186-200 |
| ISSN: | 0019-1035 |
| DOI: | 10.1016/j.icarus.2017.01.022 |
| Popis: | The MESSENGER spacecraft carried a suite of geochemical remote-sensing devices that included a Gamma-Ray Spectrometer (GRS). The GRS underwent an extensive series of tests and calibrations prior to launch in order to characterize the response of the system, information that is necessary to derive elemental composition from gamma-ray measurements. From orbit about Mercury, the GRS collected gamma-ray data that were used to characterize the elemental composition of Mercury's near-surface materials. We report here the details of the ground calibration and the characterization and operation of the GRS during both the cruise and orbital phases of the mission. This information provides the basis for characterizing gamma-ray emissions from Mercury and deriving elemental composition data from those measurements. |
| Databáze: | OpenAIRE |
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