Please use this identifier to cite or link to this item: http://buratest.brunel.ac.uk/handle/2438/8772
Title: The Chandrayaan-1 X-ray spectrometer: First results
Authors: Kellett, BJ
Swinyard, BM
Crawford, IA
Joy, KH
Grande, M
Howe, CJ
Huovelin, J
Narendranath, S
Alha, L
Anand, M
Athiray, PS
Bhandari, N
Carter, JA
Cook, AC
d'Uston, LC
Fernandes, VA
Gasnault, O
Goswami, JN
Gow, JPD
Holland, AD
Koschny, D
Lawrence, DJ
Maddison, BJ
Maurice, S
McKay, DJ
Okada, T
Pieters, C
Rothery, DA
Russell, SS
Shrivastava, A
Smith, DR
Wieczorek, M
Keywords: Lunar X-ray spectroscopy;Lunar regolith;Lunar chemistry;Lunar crust;Gamma-ray spectroscopy
Issue Date: 2012
Publisher: Elsevier
Citation: Planetary and Space Science, 60(1), 217 - 228, 2012
Abstract: We present X-ray fluorescence observations of the lunar surface, made by the Chandrayaan-1 X-ray Spectrometer during two solar flare events early in the mission (12th December 2008 and 10th January 2009). Modelling of the X-ray spectra with an abundance algorithm allows quantitative estimates of the MgO/SiO2 and Al2O3/SiO2 ratios to be made for the two regions, which are in mainly basaltic areas of the lunar nearside. One of these ground tracks includes the Apollo 14 landing site on the Fra Mauro Formation. Within the 1σ errors provided, the results are inside the range of basaltic samples from the Apollo and Luna collections. The Apollo 14 soil composition is in agreement with the results from the January flare at the 1σ uncertainty level. Discrepancies are observed between our results and compositions derived for the same areas by the Lunar Prospector gamma-ray spectrometer; some possible reasons for this are discussed.
Description: This is the post-print version of the final paper published in Planetary and Space Science. The published article is available from the link below. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. Copyright @ 2012 Elsevier B.V.
URI: http://www.sciencedirect.com/science/article/pii/S0032063311002741
http://bura.brunel.ac.uk/handle/2438/8772
DOI: http://dx.doi.org/10.1016/j.pss.2011.08.014
ISSN: 0032-0633
Appears in Collections:Electronic and Computer Engineering
Dept of Electronic and Computer Engineering Research Papers

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