Lunar potassium distribution: Results from Chang'E-1 gamma ray spectrometer
文献类型：期刊论文
| 作者 | Zhu Meng-Hua1; Ma Tao2 ; Chang Jin2; Tang ZeSheng1; Ip Wing-Huen1; Xu AoAo1
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| 刊名 | SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
 |
| 出版日期 | 2011-11-01 |
| 卷号 | 54期号:11页码:2083-2090 |
| 关键词 | Chang'E-1 gamma-ray spectrometer potassium distribution empirical calibration |
| ISSN号 | 1674-7348 |
| 英文摘要 | The global map of potassium is represented in this paper from Chang'E-1 (CE-1) Gamma-ray Spectrometer (CGRS) for its one-year mission. Assuming a linear relationship between net count rate and its abundance, the average potassium abundance of individual landing sites is used as ground-truth for the calibration to derive the global map of absolute concentration. Although CGRS spectra have a lower signal-to-noise ratio, the translated map still keeps relative variations. As calculated from Apollo, Lunar Prospector, and Kaguya, global potassium map from CGRS shows high concentrations on the lunar nearside and secondary concentrations located in the South Pole-Aitken (SPA) basin on the farside. The comparison with Lunar Prospector potassium map shows a good correlation, though abundances on the highlands of the farside are much lower than that of Lunar Prospector. Since the footprint of CGRS measurements is larger than the sampling radius of each landing site, the calibrated map shows a larger variation range of the scale than that of Lunar Prospector, which was derived using theoretical calculation; namely, the calibrated map has higher values in the areas with high concentration while having lower values for the areas with lower concentration. However, the derived potassium map is more consistent with the lunar sample data than that of Lunar Prospector. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Multidisciplinary |
| 研究领域[WOS] | Physics |
| 关键词[WOS] | PROCELLARUM KREEP TERRANE ; RADIOACTIVE ELEMENTS ; THORIUM ABUNDANCES ; SURFACE ; PROSPECTOR ; CRUST ; MOON ; EVOLUTION ; FEO |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000297362200024 |
| 公开日期 | 2012-01-17 |
| 源URL | [http://159.226.72.40/handle/332002/2091]  |
| 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, Peoples R China 2.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu Meng-Hua,Ma Tao,Chang Jin,et al. Lunar potassium distribution: Results from Chang'E-1 gamma ray spectrometer[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2011,54(11):2083-2090. |
| APA | Zhu Meng-Hua,Ma Tao,Chang Jin,Tang ZeSheng,Ip Wing-Huen,&Xu AoAo.(2011).Lunar potassium distribution: Results from Chang'E-1 gamma ray spectrometer.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,54(11),2083-2090. |
| MLA | Zhu Meng-Hua,et al."Lunar potassium distribution: Results from Chang'E-1 gamma ray spectrometer".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 54.11(2011):2083-2090. |
入库方式： OAI收割
来源：紫金山天文台
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