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A comparative study...
A comparative study of LaBr3(Ce3+) and CeBr3 based gamma-ray spectrometers for planetary remote sensing applications
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- Kozyrev, A. (författare)
- Space Research Institute of the Russian Academy of Sciences (IKI), Russia
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- Mitrofanov, I. (författare)
- Space Research Institute of the Russian Academy of Sciences (IKI), Russia
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- Owens, A. (författare)
- European Space Agency, The Netherlands
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- Quarati, F. (författare)
- AP, RST, FAME, Delft University of Technology, The Netherlands; Gonitec BV, The Netherlands
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- Benkhoff, J. (författare)
- European Space Agency, The Netherlands
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- Bakhtin, B. (författare)
- Space Research Institute of the Russian Academy of Sciences (IKI), Russia
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- Fedosov, F. (författare)
- Space Research Institute of the Russian Academy of Sciences (IKI), Russia
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- Golovin, D. (författare)
- Space Research Institute of the Russian Academy of Sciences (IKI), Russia
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- Litvak, M. (författare)
- Space Research Institute of the Russian Academy of Sciences (IKI), Russia
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- Malakhov, A. (författare)
- Space Research Institute of the Russian Academy of Sciences (IKI), Russia
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- Mokrousov, M. (författare)
- Space Research Institute of the Russian Academy of Sciences (IKI), Russia
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- Nuzhdin, I. (författare)
- Space Research Institute of the Russian Academy of Sciences (IKI), Russia
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- Sanin, A. (författare)
- Space Research Institute of the Russian Academy of Sciences (IKI), Russia
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- Tretyakov, V. (författare)
- Space Research Institute of the Russian Academy of Sciences (IKI), Russia
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- Vostrukhin, A. (författare)
- Space Research Institute of the Russian Academy of Sciences (IKI), Russia
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- Timoshenko, G. (författare)
- Joint Institute for Nuclear Research, Russia
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- Shvetsov, V. (författare)
- Joint Institute for Nuclear Research, Russia
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- Granja, C. (författare)
- Czech Technical University in Prague, Czech
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- Slavicek, Tomas (författare)
- Czech Technical University in Prague, Czech
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- Pospisil, S. (författare)
- Czech Technical University in Prague, Czech
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(creator_code:org_t)
- AIP Publishing, 2016
- 2016
- Engelska.
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Ingår i: Review of Scientific Instruments. - : AIP Publishing. - 0034-6748 .- 1089-7623. ; 87:8
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The recent availability of large volume cerium bromide crystals raises the possibility of substantially improving gamma-ray spectrometer limiting flux sensitivities over current systems based on the lanthanum tri-halides, e.g., lanthanum bromide and lanthanum chloride, especially for remote sensing, low-level counting applications or any type of measurement characterized by poor signal to noise ratios. The Russian Space Research Institute has developed and manufactured a highly sensitive gamma-ray spectrometer for remote sensing observations of the planet Mercury from the Mercury Polar Orbiter (MPO), which forms part of ESA’s BepiColombo mission. The Flight Model (FM) gamma-ray spectrometer is based on a 3-in. single crystal of LaBr3(Ce3+) produced in a separate crystal development programme specifically for this mission. During the spectrometers development, manufacturing, and qualification phases, large crystals of CeBr3 became available in a subsequent phase of the same crystal development programme. Consequently, the Flight Spare Model (FSM) gamma-ray spectrometer was retrofitted with a 3-in. CeBr3 crystal and qualified for space. Except for the crystals, the two systems are essentially identical. In this paper, we report on a comparative assessment of the two systems, in terms of their respective spectral properties, as well as their suitability for use in planetary mission with respect to radiation tolerance and their propensity for activation. We also contrast their performance with a Ge detector representative of that flown on MESSENGER and show that: (a) both LaBr3(Ce3+) and CeBr3 provide superior detection systems over HPGe in the context of minimally resourced spacecraft and (b) CeBr3 is a more attractive system than LaBr3(Ce3+) in terms of sensitivities at lower gamma fluxes. Based on the tests, the FM has now been replaced by the FSM on the BepiColombo spacecraft. Thus, CeBr3 now forms the central gamma-ray detection element on the MPO spacecraft. Published by AIP Publishing.
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- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
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Kozyrev, A.
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Mitrofanov, I.
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Owens, A.
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Quarati, F.
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Benkhoff, J.
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Bakhtin, B.
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visa fler...
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Fedosov, F.
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Golovin, D.
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Litvak, M.
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Malakhov, A.
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Mokrousov, M.
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Nuzhdin, I.
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Sanin, A.
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Tretyakov, V.
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Vostrukhin, A.
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Timoshenko, G.
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Shvetsov, V.
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Granja, C.
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Slavicek, Tomas
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Pospisil, S.
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