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| Titel |
A comparative study of gamma-ray spectrometers with LaBr3(Ce3+) and CeBr3 scintillation crystals for planetary remote sensing applications. |
| VerfasserIn |
Alexander Kozyrev, Igor Mitrofanov, Alan Owens, Francesco Quarati, Johannes Benkhoff, Maxim Litvak, Alexey Malakhov, Maxim Mokrousov, Andrey Vostrukhin, Dmitry Golovin, Vladislav Tretyakov, Anton Sanin, Boris Bakhtin, Gennady Timoshenko, Valery Shvetsov, Carlos Granja, Tomáš Slavicek, Stanislav Pospisil |
| Konferenz |
EGU General Assembly 2016
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 18 (2016) |
| Datensatznummer |
250135400
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| Publikation (Nr.) |
 EGU/EGU2016-16261.pdf |
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| Zusammenfassung |
| The Russian Space Research Institute has developed and manufactured the gamma-ray
spectrometer MGNS for remote sensing observations of the Mercury from the Mercury Polar
Orbiter (MPO), which is the part of ESA’s BepiColombo mission. The Flight Model (FM) of
MGNS is based on a 3-inch single crystal of LaBr3(Ce3+), which was produced in the crystal
development programme specifically for this mission. During the instrument development
and verification, the crystals of CeBr3(Ce3+) became available with the similar sizes in a
subsequent phase of the same crystal development programme. Consequently, the Flight
Spare Model (FSM) of MGNS was produced with the 3-inch CeBr3 crystal and qualified for
space flight. Except for the crystals, the two units FM and FSM are essentially
identical.
We report the results on a comparative assessment of the two units in terms of their
respective spectroscopic capabilities, well as for their suitability for interplanetary spacecraft
with respect to radiation tolerance and redundancy for activation. We also compare their
performance with that of the Ge detector, as one used on the Messenger mission. Based on
the tests results, the decision was taken to use FSM onboard the MPO on the BepiColombo
mission. Thus, the MGNS with CeBr3 is the central gamma-ray detection element on the
MPO spacecraft. |
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