Global Distribution Analysis of Uranium on Lunar Surface Using CE2-GRS Data

• 1、The College of Nuclear Technology and Automation Engineering,Chengdu University of Technology,Chengdu,610059
• 2、China Aero-geophysical Survey and Remote Sensing Center for Land and Resources，Beijing 100083

Abstract：In order to acquire the global distribution of uranium on the lunar surface, the structure and performance indicators of the Chang'E-2(CE2) gamma-ray spectrometer(GRS) and the characteristics of the CE2-GRS data were analyzed. The methods and data processing procedure of the CE2-GRS were proposed using the level 2C spectra data measured by the CE2-GRS, and the preliminary global count map of uranium was derived. Uranium is primarily concentrated within and around the western-most maria on the nearside and a secondary abundance concentration is located in the South Pole-Aitken basin. On the farside, uranium generally shows the feature of low abundance. Compared with the global map of uranium measured by the SELENE GRS, the result shows that major features of the global uranium distribution appeared in CE2-GRS map are consistent with that from the SELENE GRS, but there are still some differences in detail between these two maps.

Keywords： Detection of moon Gamma-ray Spectrum Chang'E-2 Distribution feature of uranium