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Quantification of water content by laser induced breakdown spectroscopy on Mars

Rapin, W. and Meslin, P.-Y. and Maurice, S. and Wiens, R. C. and Laporte, D. and Chauviré, B. and Gasnault, O. and Schröder, S. and Beck, P. and Bender, S. and Beyssac, O. and Cousin, A. and Dehouck, E. and Drouet, C. and Forni, O. and Nachon, M. and Melikechi, N. and Rondeau, B. and Mangold, N. and Thomas, N. H. (2017) Quantification of water content by laser induced breakdown spectroscopy on Mars. Spectrochimica Acta Part B: Atomic Spectroscopy, 130 . pp. 82-100. ISSN 0584-8547.

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Laser induced breakdown spectroscopy (LIBS), as performed by the ChemCam instrument, provides a new technique to measure hydrogen at the surface of Mars. Using a laboratory replica of the LIBS instrument onboard the Curiosity rover, different types of hydrated samples (basalts, calcium and magnesium sulfates, opals and apatites) covering a range of targets observed on Mars have been characterized and analyzed. A number of factors related to laser parameters, atmospheric conditions and differences in targets properties can affect the standoff LIBS signal, and in particular the hydrogen emission peak. Dedicated laboratory tests were run to identify a normalization of the hydrogen signal which could best compensate for these effects and enable the application of the laboratory calibration to Mars data. We check that the hydrogen signal increases linearly with water content; and normalization of the hydrogen emission peak using to oxygen and carbon emission peaks (related to the breakdown of atmospheric carbon dioxide) constitutes a robust approach. Moreover, the calibration curve obtained is relatively independent of the samples types.

Item Type:Article
Related URLs:
URLURL TypeDescription
Rapin, W.0000-0003-4660-8006
Meslin, P.-Y.0000-0002-0703-3951
Wiens, R. C.0000-0002-3409-7344
Laporte, D.0000-0003-1965-2351
Chauviré, B.0000-0003-0431-6312
Gasnault, O.0000-0002-6979-9012
Schröder, S.0000-0003-1870-3663
Cousin, A.0000-0001-7823-7794
Dehouck, E.0000-0002-1368-4494
Forni, O.0000-0001-6772-9689
Nachon, M.0000-0003-0417-7076
Mangold, N.0000-0002-0022-0631
Thomas, N. H.0000-0003-1989-4860
Additional Information:© 2017 Elsevier B.V. Received 3 August 2016, Revised 2 February 2017, Accepted 10 February 2017, Available online 12 February 2017.
Subject Keywords:Laser-induced breakdown spectroscopy; ChemCam; Hydrogen; Water; Hydration
Record Number:CaltechAUTHORS:20170428-080029023
Persistent URL:
Official Citation:W. Rapin, P.-Y. Meslin, S. Maurice, R.C. Wiens, D. Laporte, B. Chauviré, O. Gasnault, S. Schröder, P. Beck, S. Bender, O. Beyssac, A. Cousin, E. Dehouck, C. Drouet, O. Forni, M. Nachon, N. Melikechi, B. Rondeau, N. Mangold, N.H. Thomas, Quantification of water content by laser induced breakdown spectroscopy on Mars, Spectrochimica Acta Part B: Atomic Spectroscopy, Volume 130, 1 April 2017, Pages 82-100, ISSN 0584-8547, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:77039
Deposited By: Tony Diaz
Deposited On:28 Apr 2017 16:16
Last Modified:09 Mar 2020 13:19

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