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- Title
Estimation of lunar major elemental abundances in Chang'E-3 landing site based on Active Particle-induced X-ray Spectrometer (APXS).
- Authors
Wang, Jian; Wang, Xianmin
- Abstract
Elemental abundance provides an effective vehicle to understand lunar petrologic characteristics and evolutional history. The APXS mounted on the Yutu rover provides a valuable opportunity to determine the major elemental abundances in lunar soil within a short distance. In this study, we processed the APXS spectra including energy calibration, dead time correction and nonlinear least-squares fitting, and determined the abundances of the lunar major elements using the fundamental parameter method. In the calculation of X-ray fluorescence yield, a finite element method (FEM) was employed to improve the accuracy. The major elemental abundances derived from Chang'E-3 (CE-3) APXS possess a good consistency with the result of LP-GRS (Lunar Prospector gamma-ray spectrometer) data in the landing region. Compared with the chemical composition of the returned lunar rock samples, we draw the conclusion that the lunar soils in CE-3 landing site are fragments of mare basalts. Our conclusion is supported by the geological map of Mare Imbrium.
- Subjects
COSMIC abundances; MARS landing sites; X-ray spectrometers; FINITE element method; LUNAR petrology; LUNAR soil
- Publication
Astrophysics & Space Science, 2015, Vol 359, Issue 1, p1
- ISSN
0004-640X
- Publication type
Article
- DOI
10.1007/s10509-015-2454-9