Chang'E-1 gamma ray spectrometer and preliminary radioactive results on the lunar surface
文献类型：期刊论文
| 作者 | Zhu, Meng-Hua1; Ma, Tao2 ; Chang, Jin2
|
| 刊名 | PLANETARY AND SPACE SCIENCE
 |
| 出版日期 | 2010-10-01 |
| 卷号 | 58期号:12页码:1547-1554 |
| 关键词 | CE-1 Spacecraft CsI(Tl) crystal Gamma-ray spectrum Radioactive composition Gamma-ray spectrometer |
| ISSN号 | 0032-0633 |
| 英文摘要 | The Chang'E-1(CE-1) spacecraft took a gamma-ray spectrometer (hereafter, CGRS) to detect the element distributions on the lunar surface in a circular, 200 km altitude, polar orbit with approximately 2 h periodicity. CGRS consists of two large CsI(Tl) crystals as the main and anticoincidence detectors. The large CsI crystal of CGRS has a higher detector effective area than other lunar gamma ray spectrometers. For its 1-year mission, gamma ray spectra including many peaks of major elements and trace elements on the lunar surface have been measured by CGRS. Global measurement within 0.55-0.75 MeV is given here to describe the distribution of radioactive composition (e.g., uranium and thorium) on the lunar surface. Although CGRS has a lower energy resolution that cannot separate the uranium peak from others in this energy region, 609 key uranium gamma ray line dominates the shape of the spectrum in this energy region. Therefore, the radioactive map can indirectly describe the uranium distribution on the lunar surface. The radioactive map shows that the higher radiation is concentrated in the Procellarum KREEP Terrene (PKT) on the nearside with an oval shape. The secondary high-radiation is located in South Pole-Aitken (SPA) basin. Lunar highlands have lower concentration. The relationship between radiation and topography displays different linear correlations for lunar highlands and SPA basin, which imply the different processes for these two regions. Crown Copyright (c) 2010 Published by Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | PROCELLARUM KREEP TERRANE ; POLE AITKEN BASIN ; THORIUM ABUNDANCES ; PROSPECTOR ; MANTLE ; CRUST ; FEO ; ORIGIN ; TIO2 ; MOON |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000283408100004 |
| 公开日期 | 2011-11-23 |
| 源URL | [http://159.226.72.40/handle/332002/975]  |
| 专题 | 紫金山天文台_暗物质和空间天文实验室 |
| 作者单位 | 1.Macau Univ Sci & Technol, Space Explorat Lab, Taipa, Macau, Peoples R China 2.Acad Sinica, Purple Mt Observ, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Meng-Hua,Ma, Tao,Chang, Jin. Chang'E-1 gamma ray spectrometer and preliminary radioactive results on the lunar surface[J]. PLANETARY AND SPACE SCIENCE,2010,58(12):1547-1554. |
| APA | Zhu, Meng-Hua,Ma, Tao,&Chang, Jin.(2010).Chang'E-1 gamma ray spectrometer and preliminary radioactive results on the lunar surface.PLANETARY AND SPACE SCIENCE,58(12),1547-1554. |
| MLA | Zhu, Meng-Hua,et al."Chang'E-1 gamma ray spectrometer and preliminary radioactive results on the lunar surface".PLANETARY AND SPACE SCIENCE 58.12(2010):1547-1554. |
入库方式： OAI收割
来源：紫金山天文台
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