Gamma-Ray Spectrometer for Japanese Lunar polar orbiter

Nobuyuki Hasebe*, E. Shibamura, T. Atarashiya, T. Doke, C. D'Uston, M. Grande, T. Kashiwagi, J. Kikuchi, M. Kobayashi, K. Kubo, S. Mitani, K. Mori, K. Narasaki, K. Nomi, T. Takashima, R. Tanibata, R. C. Reedy

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    12 Citations (Scopus)


    We review the current status of the development of Gamma-Ray Spectrometer (GRS) for the lunar mission SELENE. The GRS instrument will measure gamma-rays in the energy range from 100 keV to 9 MeV. The instrument is a high-purity Ge detector surrounded by BGO and plastic scintillators which are operated as an anticoincidence shield, and is cooled by a Stirling cycle cryocooler. The primary objective is to provide global maps of the lunar composition. Measurements are anticipated for Fe, Ti, U, Th, K, Si, Mg, Al, O, Ca and Na over the entire lunar surface. The abundance of water ice in the permanently shaded craters at both the lunar poles will be measured with this instrument.

    Original languageEnglish
    Pages (from-to)1837-1840
    Number of pages4
    JournalAdvances in Space Research
    Issue number11
    Publication statusPublished - 1999

    ASJC Scopus subject areas

    • Space and Planetary Science
    • Astronomy and Astrophysics


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