Gamma-ray spectrometer (GRS) for lunar polar orbiter SELENE

被引：42

作者：

Hasebe, Nobuyuki ^{[1
]}

Shibamura, Eido ^{[2
]}

Miyachil, Takashi ^{[1
]}

Takashima, Takeshi ^{[3
,4
]}

Kobayashi, Masanori

Okudaira, Osamu ^{[1
]}

Yamashita, Naoyuki ^{[1
]}

Kobayashi, Shingo ^{[1
]}

Ishizaki, Takeshi ^{[1
]}

Sakurai, Kunitomo ^{[1
]}

Miyajima, Mitsuhiro ^{[1
]}

Fujii, Masayuki ^{[1
]}

Narasaki, Keisuke ^{[5
]}

Takai, Shigeki ^{[5
]}

Tsurumi, Katsuhiro ^{[5
]}

Kaneko, Hiroshi ^{[6
]}

Nakazawa, Michio ^{[6
]}

Mori, Kunishiro ^{[7
]}

Gasnault, Olivier ^{[8
]}

Maurice, Sylvestre ^{[8
]}

d'Uston, Claude ^{[8
]}

Reedy, Robert C. ^{[9
]}

Grande, Manuel ^{[10
]}

机构：

[1] Waseda Univ, Res Inst Sci & Engn, Shinjuku Ku, Tokyo 1698555, Japan

[2] Saitama Prefectural Univ, Coll Hlth Sci, Saitama 3438540, Japan

[3] Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Sagamihara, Kanagawa 2298510, Japan

[4] Nippon Med Sch, Kawasaki, Kanagawa 2110063, Japan

[5] Sumitomo Heavy Ind Ltd, Niihama Works, Niihama, Ehime 7928588, Japan

[6] Meisei Elect Co Ltd, Isesaki Works, Gunma 3728585, Japan

[7] Clear Pulse Co Ltd, Ohta Ku, Tokyo 1430024, Japan

[8] Univ Toulouse 3, CNRS, Ctr Etud Spatiale Rayonnements, F-31400 Toulouse, France

[9] Univ New Mexico, Inst Meteorit, Albuquerque, NM 87131 USA

[10] Univ Wales, Inst Math & Phys Sci, Aberystwyth SY23 3BZ, Dyfed, Wales

来源：

EARTH PLANETS AND SPACE | 2008年 / 60卷 / 04期

关键词：

Moon; gamma-ray spectroscopy; chemical composition; lunar formation and evolution; SELENE (KAGUYA); GRS;

D O I：

10.1186/BF03352795

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The high-precision gamma-ray spectrometer (GRS) on the lunar polar orbiter SELENE is designed to measure 200 keV-12 MeV gamma rays in order to determine elemental compositions of the lunar surface. The GRS consists of a large germanium (Ge) crystal as a main detector and a massive bismuth germanate crystal and a plastic scintillator as anticoincidence detectors. The Ge detector is cooled by a Stirling cryocooler with its compressor attached to a passive radiator facing the cold space. The cooling system maintains the Ge detector below 90 K during the observation. The flight model of the GRS has achieved an energy resolution of 3.0 keV (FWHM) at 1333 keV. Energy spectra obtained by the GRS will show sharp gamma-ray lines whose energies identify the elements and whose intensities determine the concentrations of the elements, permitting global mapping of the elemental abundances in the sub-surface of the Moon. The elemental maps obtained by the GRS with such high-energy resolution enable us to study lunar geoscience problems.

引用

页码：299 / 312

页数：14

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