Distributions of K and Th on the moon: The initial results from observations by selene GRS

Yuzuru Karouji, Nobuyuki Hasebe, Osamu Okudaira, Naoyuki Yamashita, Shingo Kobayashi, Makoto Hareyama, Takashi Miyachi, Kodaira Satoshi, Kazuya Iwabuchi, Kanako Hayatsu, Shinpei Nemoto, Yuko Takeda, Koichi Tsukada, Hiroshi Nagaoka, Masanori Kobayasi, Eido Shibamura, Mitsuru Ebihara, Takeshi Hihara, Tomoko Arai, Takamitsu SugiharaHiroshi Takeda, Claude D’Uston, Sylvestre Maurice, Olivier Gasnault, Olivier Forni, Benedicte Diez, Robert C. Reedy, Kyeong J. Kim, Takeshi Takashima, Yuichi Iijima, Hisashi Otake

    Research output: Chapter in Book/Report/Conference proceedingChapter

    1 Citation (Scopus)

    Abstract

    The high precision gamma-ray spectrometer (GRS) onboard the Japanese lunar explorer, SELENE (KAGUYA) consists of a large Ge crystal as the main detector and massive BGO and plastic scintillators as anticoincidence detectors. After a series of initial health checks, it started regular observation officially on December 21, 2007. Energy spectra of lunar gamma rays were obtained by GRS with very good energy resolution being 0.6% at 1.46MeV over the lunar surface. Many peaks of gamma rays from major elements and natural radioactive elements in the lunar surface have been observed. Individual gamma-ray lines emitted from the lunar surface have been identified. Here, we report the initial results obtained practically during the period from December 14, 2007 to February 17, 2008. Global maps of K and Th gamma-ray intensities are reported using count rates in several energy bands.

    Original languageEnglish
    Title of host publicationAdvances in Geosciences: Volume 19: Planetary Science (PS)
    PublisherWorld Scientific Publishing Co.
    Pages43-56
    Number of pages14
    ISBN (Electronic)9789812838162
    ISBN (Print)9812838155, 9789812838155
    DOIs
    Publication statusPublished - 2010 Jan 1

    Fingerprint

    Moon
    spectrometer
    energy
    plastic
    crystal
    distribution
    detector
    rate
    health

    ASJC Scopus subject areas

    • Earth and Planetary Sciences(all)

    Cite this

    Karouji, Y., Hasebe, N., Okudaira, O., Yamashita, N., Kobayashi, S., Hareyama, M., ... Otake, H. (2010). Distributions of K and Th on the moon: The initial results from observations by selene GRS. In Advances in Geosciences: Volume 19: Planetary Science (PS) (pp. 43-56). World Scientific Publishing Co.. https://doi.org/10.1142/9789812838162_0004

    Distributions of K and Th on the moon : The initial results from observations by selene GRS. / Karouji, Yuzuru; Hasebe, Nobuyuki; Okudaira, Osamu; Yamashita, Naoyuki; Kobayashi, Shingo; Hareyama, Makoto; Miyachi, Takashi; Satoshi, Kodaira; Iwabuchi, Kazuya; Hayatsu, Kanako; Nemoto, Shinpei; Takeda, Yuko; Tsukada, Koichi; Nagaoka, Hiroshi; Kobayasi, Masanori; Shibamura, Eido; Ebihara, Mitsuru; Hihara, Takeshi; Arai, Tomoko; Sugihara, Takamitsu; Takeda, Hiroshi; D’Uston, Claude; Maurice, Sylvestre; Gasnault, Olivier; Forni, Olivier; Diez, Benedicte; Reedy, Robert C.; Kim, Kyeong J.; Takashima, Takeshi; Iijima, Yuichi; Otake, Hisashi.

    Advances in Geosciences: Volume 19: Planetary Science (PS). World Scientific Publishing Co., 2010. p. 43-56.

    Research output: Chapter in Book/Report/Conference proceedingChapter

    Karouji, Y, Hasebe, N, Okudaira, O, Yamashita, N, Kobayashi, S, Hareyama, M, Miyachi, T, Satoshi, K, Iwabuchi, K, Hayatsu, K, Nemoto, S, Takeda, Y, Tsukada, K, Nagaoka, H, Kobayasi, M, Shibamura, E, Ebihara, M, Hihara, T, Arai, T, Sugihara, T, Takeda, H, D’Uston, C, Maurice, S, Gasnault, O, Forni, O, Diez, B, Reedy, RC, Kim, KJ, Takashima, T, Iijima, Y & Otake, H 2010, Distributions of K and Th on the moon: The initial results from observations by selene GRS. in Advances in Geosciences: Volume 19: Planetary Science (PS). World Scientific Publishing Co., pp. 43-56. https://doi.org/10.1142/9789812838162_0004
    Karouji Y, Hasebe N, Okudaira O, Yamashita N, Kobayashi S, Hareyama M et al. Distributions of K and Th on the moon: The initial results from observations by selene GRS. In Advances in Geosciences: Volume 19: Planetary Science (PS). World Scientific Publishing Co. 2010. p. 43-56 https://doi.org/10.1142/9789812838162_0004
    Karouji, Yuzuru ; Hasebe, Nobuyuki ; Okudaira, Osamu ; Yamashita, Naoyuki ; Kobayashi, Shingo ; Hareyama, Makoto ; Miyachi, Takashi ; Satoshi, Kodaira ; Iwabuchi, Kazuya ; Hayatsu, Kanako ; Nemoto, Shinpei ; Takeda, Yuko ; Tsukada, Koichi ; Nagaoka, Hiroshi ; Kobayasi, Masanori ; Shibamura, Eido ; Ebihara, Mitsuru ; Hihara, Takeshi ; Arai, Tomoko ; Sugihara, Takamitsu ; Takeda, Hiroshi ; D’Uston, Claude ; Maurice, Sylvestre ; Gasnault, Olivier ; Forni, Olivier ; Diez, Benedicte ; Reedy, Robert C. ; Kim, Kyeong J. ; Takashima, Takeshi ; Iijima, Yuichi ; Otake, Hisashi. / Distributions of K and Th on the moon : The initial results from observations by selene GRS. Advances in Geosciences: Volume 19: Planetary Science (PS). World Scientific Publishing Co., 2010. pp. 43-56
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    T2 - The initial results from observations by selene GRS

    AU - Karouji, Yuzuru

    AU - Hasebe, Nobuyuki

    AU - Okudaira, Osamu

    AU - Yamashita, Naoyuki

    AU - Kobayashi, Shingo

    AU - Hareyama, Makoto

    AU - Miyachi, Takashi

    AU - Satoshi, Kodaira

    AU - Iwabuchi, Kazuya

    AU - Hayatsu, Kanako

    AU - Nemoto, Shinpei

    AU - Takeda, Yuko

    AU - Tsukada, Koichi

    AU - Nagaoka, Hiroshi

    AU - Kobayasi, Masanori

    AU - Shibamura, Eido

    AU - Ebihara, Mitsuru

    AU - Hihara, Takeshi

    AU - Arai, Tomoko

    AU - Sugihara, Takamitsu

    AU - Takeda, Hiroshi

    AU - D’Uston, Claude

    AU - Maurice, Sylvestre

    AU - Gasnault, Olivier

    AU - Forni, Olivier

    AU - Diez, Benedicte

    AU - Reedy, Robert C.

    AU - Kim, Kyeong J.

    AU - Takashima, Takeshi

    AU - Iijima, Yuichi

    AU - Otake, Hisashi

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