Germanium gamma-ray spectrometer on selene (kaguya)

Naoyuki Yamashita; Nobuyuki Hasebe; Eido Shibamura; Takashi Miyaohi; Takeshi Takashima; Masanori Kobayashi; Osamu Okudaira; Shingo Kobayashi; Makoto Hareyama; Yuzuru Karouji; Satoshi Kodaira; Kunitomo Sakurai; Kazuya Iwabuchi; Kanako Hayatsu; Shinpei Nemoto; Mitsuru Ebihara; Takeshi Hihara; Claude D'Uston; Sylvestre Maurice; Olivier Gasnault; Olivier Forni; Benedicte Diez; Robert C. Reedy; Kyeong J. Kim

doi:10.1143/JPSJS.78SA.153

Germanium gamma-ray spectrometer on selene (kaguya)

Naoyuki Yamashita^*, Nobuyuki Hasebe, Eido Shibamura, Takashi Miyaohi, Takeshi Takashima, Masanori Kobayashi, Osamu Okudaira, Shingo Kobayashi, Makoto Hareyama, Yuzuru Karouji, Satoshi Kodaira, Kunitomo Sakurai, Kazuya Iwabuchi, Kanako Hayatsu, Shinpei Nemoto, Mitsuru Ebihara, Takeshi Hihara, Claude D'Uston, Sylvestre Maurice, Olivier GasnaultOlivier Forni, Benedicte Diez, Robert C. Reedy, Kyeong J. Kim

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

The Japanese lunar explorer SELENE was launched from Tanegashima Space Center on September 14, 2007. It consists of a main orbiter KAGUYA at 100 km altitude and two daughter satellites (relay satellite OKINA and VRAD satellite OUNA) with 14 scientific instruments. The high precision gamma-ray spectrometer (GRS) on KAGUYA measures 200 keV - 12 MeV gamma rays to determine the elemental composition of the lunar surface. The GRS is composed of a large Ge crystal as a main detector and massive bismuth germinate (BGO) crystals and a plastic scintillator as anticoincidence detectors. The Ge detector is cooled by a Stirling cryocooler below 90 K during the observation. After successful launch of the spacecraft and initial checkouts, the GRS started the nominal observation on December 21, 2007, and the temperatures and counting rates of the GRS were confirmed to be stable. Energy spectra of gamma rays with a good energy resolution are being obtained over the lunar surface, which will allow us to make global maps of the elemental abundances of the Moon soon.

Original language	English
Pages (from-to)	153-156
Number of pages	4
Journal	journal of the physical society of japan
Volume	78
Issue number	SUPPL. A
DOIs	https://doi.org/10.1143/JPSJS.78SA.153
Publication status	Published - 2009
Externally published	Yes

Keywords

Abundance
Elemental composition
GRS
Gamma ray spectrometer
Ge
Germanium
KAGUYA
Lunar
Moon
SELENE

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1143/JPSJS.78SA.153

Cite this

Yamashita, N., Hasebe, N., Shibamura, E., Miyaohi, T., Takashima, T., Kobayashi, M., Okudaira, O., Kobayashi, S., Hareyama, M., Karouji, Y., Kodaira, S., Sakurai, K., Iwabuchi, K., Hayatsu, K., Nemoto, S., Ebihara, M., Hihara, T., D'Uston, C., Maurice, S., ... Kim, K. J. (2009). Germanium gamma-ray spectrometer on selene (kaguya). journal of the physical society of japan, 78(SUPPL. A), 153-156. https://doi.org/10.1143/JPSJS.78SA.153

Yamashita, N, Hasebe, N, Shibamura, E, Miyaohi, T, Takashima, T, Kobayashi, M, Okudaira, O, Kobayashi, S, Hareyama, M, Karouji, Y, Kodaira, S, Sakurai, K, Iwabuchi, K, Hayatsu, K, Nemoto, S, Ebihara, M, Hihara, T, D'Uston, C, Maurice, S, Gasnault, O, Forni, O, Diez, B, Reedy, RC & Kim, KJ 2009, 'Germanium gamma-ray spectrometer on selene (kaguya)', journal of the physical society of japan, vol. 78, no. SUPPL. A, pp. 153-156. https://doi.org/10.1143/JPSJS.78SA.153

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abstract = "The Japanese lunar explorer SELENE was launched from Tanegashima Space Center on September 14, 2007. It consists of a main orbiter KAGUYA at 100 km altitude and two daughter satellites (relay satellite OKINA and VRAD satellite OUNA) with 14 scientific instruments. The high precision gamma-ray spectrometer (GRS) on KAGUYA measures 200 keV - 12 MeV gamma rays to determine the elemental composition of the lunar surface. The GRS is composed of a large Ge crystal as a main detector and massive bismuth germinate (BGO) crystals and a plastic scintillator as anticoincidence detectors. The Ge detector is cooled by a Stirling cryocooler below 90 K during the observation. After successful launch of the spacecraft and initial checkouts, the GRS started the nominal observation on December 21, 2007, and the temperatures and counting rates of the GRS were confirmed to be stable. Energy spectra of gamma rays with a good energy resolution are being obtained over the lunar surface, which will allow us to make global maps of the elemental abundances of the Moon soon.",

keywords = "Abundance, Elemental composition, GRS, Gamma ray spectrometer, Ge, Germanium, KAGUYA, Lunar, Moon, SELENE",

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AU - Yamashita, Naoyuki

AU - Hasebe, Nobuyuki

AU - Shibamura, Eido

AU - Miyaohi, Takashi

AU - Takashima, Takeshi

AU - Kobayashi, Masanori

AU - Okudaira, Osamu

AU - Kobayashi, Shingo

AU - Hareyama, Makoto

AU - Karouji, Yuzuru

AU - Kodaira, Satoshi

AU - Sakurai, Kunitomo

AU - Iwabuchi, Kazuya

AU - Hayatsu, Kanako

AU - Nemoto, Shinpei

AU - Ebihara, Mitsuru

AU - Hihara, Takeshi

AU - D'Uston, Claude

AU - Maurice, Sylvestre

AU - Gasnault, Olivier

AU - Forni, Olivier

AU - Diez, Benedicte

AU - Reedy, Robert C.

AU - Kim, Kyeong J.

PY - 2009

Y1 - 2009

N2 - The Japanese lunar explorer SELENE was launched from Tanegashima Space Center on September 14, 2007. It consists of a main orbiter KAGUYA at 100 km altitude and two daughter satellites (relay satellite OKINA and VRAD satellite OUNA) with 14 scientific instruments. The high precision gamma-ray spectrometer (GRS) on KAGUYA measures 200 keV - 12 MeV gamma rays to determine the elemental composition of the lunar surface. The GRS is composed of a large Ge crystal as a main detector and massive bismuth germinate (BGO) crystals and a plastic scintillator as anticoincidence detectors. The Ge detector is cooled by a Stirling cryocooler below 90 K during the observation. After successful launch of the spacecraft and initial checkouts, the GRS started the nominal observation on December 21, 2007, and the temperatures and counting rates of the GRS were confirmed to be stable. Energy spectra of gamma rays with a good energy resolution are being obtained over the lunar surface, which will allow us to make global maps of the elemental abundances of the Moon soon.

AB - The Japanese lunar explorer SELENE was launched from Tanegashima Space Center on September 14, 2007. It consists of a main orbiter KAGUYA at 100 km altitude and two daughter satellites (relay satellite OKINA and VRAD satellite OUNA) with 14 scientific instruments. The high precision gamma-ray spectrometer (GRS) on KAGUYA measures 200 keV - 12 MeV gamma rays to determine the elemental composition of the lunar surface. The GRS is composed of a large Ge crystal as a main detector and massive bismuth germinate (BGO) crystals and a plastic scintillator as anticoincidence detectors. The Ge detector is cooled by a Stirling cryocooler below 90 K during the observation. After successful launch of the spacecraft and initial checkouts, the GRS started the nominal observation on December 21, 2007, and the temperatures and counting rates of the GRS were confirmed to be stable. Energy spectra of gamma rays with a good energy resolution are being obtained over the lunar surface, which will allow us to make global maps of the elemental abundances of the Moon soon.

KW - Abundance

KW - Elemental composition

KW - GRS

KW - Gamma ray spectrometer

KW - Ge

KW - Germanium

KW - KAGUYA

KW - Lunar

KW - Moon

KW - SELENE

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JF - journal of the physical society of japan

IS - SUPPL. A

ER -

Germanium gamma-ray spectrometer on selene (kaguya)

Abstract

Keywords

ASJC Scopus subject areas

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