Gamma-ray detector on board lunar mission Chang’E-1 |
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| Authors: | T Ma J Chang N Zhang MS Cai YZ Gong HS Tang RJ Zhang NS Wang M Yu JP Mao SB Su Z Fang R Xu YM Hu Q Gu YL Zhou AA Xu LG Liu |
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| Institution: | 1. Purple Mountain Observatory, 2 West Beijing Road, Nanjing 210008, China;2. National Astronomical Observatory, 20A Datun Road, Beijing 100012, China;3. MACAU University of Science and Technology, Avenida Wai Long, Taipa, Macau, China |
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| Abstract: | Gamma-ray spectrometer (GRS) is included in the payload of Chinese first lunar mission Chang’E-1 that will be launched in 2007. Specific objectives of the GRS are to map abundance of O, Si, Fe, Ti, U, Th, K, and perhaps, Mg, Al, and Ca to depths of about 20 cm. There are remarkable advantages for GRS application to remote sensing elemental materials over the entire lunar surface: large effective area and good ability for background rejection. We will describe the design of GRS and present its performance in this paper. Moreover, the GRS calibration will also be introduced. |
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| Keywords: | Lunar Gamma-ray spectrometer Remote sensing GEANT4 Chang&rsquo E-1 |
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