First results of high performance ge gamma-ray spectrometer onboard lunar orbiter selene (kaguya)

N. Hasebe*, E. Shibamijra, T. Miyaohi, T. Takashima, M. N. Kobayashi, O. Okijdaira, N. Yamashita, S. Kobayashi, Y. Karojjji, M. Hareyama, S. Kodaira, S. Komatsu, K. Hayatsjj, K. Iwabuchi, S. Nemoto, K. Sakurai, M. Miyajima, M. Ebihara, T. Hihara, T. AraiT. Sugihara, H. Takeda, C. D'Uston, O. Gasnault, B. Diez, O. Forni, S. Maurice, R. C. Reedy, K. J. Kim

*この研究の対応する著者

研究成果: Article査読

18 被引用数 (Scopus)

抄録

The high precision gamma-ray spectrometer (GRS) is carried on the first Japan's large- scaled lunar explorer, SELENE (KAGUYA), successfully launched by the H-IIA rocket on Sep. 14, 2007. The GRS consists of a large Ge crystal as a main detector and massive bismuth germanate crystals and a plastic scintillator as anticoincidence detectors. After a series of initial health check of the GRS, it started a regular observation on December 21, 2007. Energy spectra including many clear peaks of major elements and trace elements on the lunar surface have been measured by the GRS. Global measurement of thorium counting rate on the lunar surface is presented. The region showing the highest count rate of thorium extends from Kepler to Fra Mauro region in the Procellarum. And Apennine Bench and Aristillus region and the northwestern region of Mare Imbrium are high in thorium count rate. Second high count rate region is located in the South Pole-Aitken basin of the farside. Arago and Compton/Belkovich craters are also enriched in thorium. The initial results observed by GRS during the period from Dec. 21, 2007 to Feb. 17, 2008 is reviewed.

本文言語English
ページ(範囲)18-25
ページ数8
ジャーナルjournal of the physical society of japan
78
SUPPL. A
DOI
出版ステータスPublished - 2009
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

フィンガープリント

「First results of high performance ge gamma-ray spectrometer onboard lunar orbiter selene (kaguya)」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル