The high precision gamma-ray spectrometer for lunar polar orbiter SELENE

N. Hasebe, N. Yamashita, O. Okudaira, S. Kobayashi, H. Yamamoto, T. Ishizaki, K. Hirano, K. Sakurai, T. Miyachi, M. Miyajima, M. Fujii, M. N. Kobayashi, T. Takashima, E. Shibamura, O. Gasnault, S. Maurice, C. d'Uston, R. Reedy, M. Grande

Allbwn ymchwil: Cyfraniad at gyfnodolynErthygl

19 Dyfyniadau(SciVal)

Crynodeb

The high precision gamma-ray spectrometer (GRS) is scheduled to be launched on the lunar polar orbiter of the SELENE mission in 2007. The GRS consists of a large Ge crystal as a main detector and massive bismuth germanate crystals as an anticoincidence detector. A Stirling cryocooler was adopted in cooling the Ge detector. The flight model of SELENE GRS has been completed and an energy resolution of 3.0 keV (FWHM) at 1.332 MeV has been achieved. The spectrometer aims to observe nuclear line gamma rays emitted from the lunar surface in a wide energy range from 100 keV to 12 MeV for one year and more to obtain chemical composition on the entire lunar surface. The gamma-ray data enable us to study lunar geoscience problems including crust and mantle composition, and volatile reservoirs at polar regions.
Iaith wreiddiolSaesneg
Tudalennau (o-i)323-330
Nifer y tudalennau8
CyfnodolynAdvances in Space Research
Cyfrol42
Rhif cyhoeddi2
Dyddiad ar-lein cynnar24 Mai 2007
Dynodwyr Gwrthrych Digidol (DOIs)
StatwsCyhoeddwyd - 18 Gorff 2008

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