DOI: 10.1029/2017JE005467
Scopus记录号: 2-s2.0-85052371861
论文题名: Characterization of Hydrogen in Basaltic Materials With Laser-Induced Breakdown Spectroscopy (LIBS) for Application to MSL ChemCam Data
作者: Thomas N.H. ; Ehlmann B.L. ; Anderson D.E. ; Clegg S.M. ; Forni O. ; Schröder S. ; Rapin W. ; Meslin P.-Y. ; Lasue J. ; Delapp D.M. ; Dyar M.D. ; Gasnault O. ; Wiens R.C. ; Maurice S.
刊名: Journal of Geophysical Research: Planets
ISSN: 21699097
出版年: 2018
卷: 123, 期: 8 起始页码: 1996
结束页码: 2021
语种: 英语
英文关键词: hydrogen
; LIBS spectroscopy
; Mars Science Laboratory
; thermogravimetric analysis
英文摘要: The Mars Science Laboratory rover, Curiosity, is equipped with ChemCam, a laser-induced breakdown spectroscopy (LIBS) instrument, to determine the elemental composition of nearby targets quickly and remotely. We use a laboratory sample set including prepared mixtures of basalt with systematic variation in hydrated mineral content and compositionally well-characterized, altered basaltic volcanic rocks to measure hydrogen by characterizing the H-alpha emission line in LIBS spectra under Martian environmental conditions. The H contents of all samples were independently measured using thermogravimetric analysis. We found that H peak area increases with weight percent H for our laboratory mixtures with basaltic matrices. The increase is linear with weight percent H in the mixtures with structurally bound H up to about 1.25 wt.% H and then steepens for higher H-content samples, a nonlinear trend not previously reported but potentially important for characterizing high water content materials. To compensate for instrument, environmental, and target matrix-related effects on quantification of H content from the LIBS signal, we examined multiple normalization methods. The best performing methods utilize O 778- and C 248-nm emission lines. The methods return comparable results when applied to ChemCam data of H-bearing materials on Mars. The calibration and normalization methods tested here will aid in investigations of H by LIBS on Mars with ChemCam and SuperCam. Further laboratory work will aid quantification across different physical matrices and heterogeneous textures because of differences we observed in H in pelletized and natural rock samples of the same composition. ©2018. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113418
Appears in Collections: 气候减缓与适应
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作者单位: Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Los Alamos National Laboratory, Los Alamos, NM, United States; Institut de Recherche en Astrophysique et Planétologie, Université de Toulouse, Toulouse, France; German Aerospace Center (DLR), Berlin, Germany; Mount Holyoke College, South Hadley, MA, United States
Recommended Citation:
Thomas N.H.,Ehlmann B.L.,Anderson D.E.,et al. Characterization of Hydrogen in Basaltic Materials With Laser-Induced Breakdown Spectroscopy (LIBS) for Application to MSL ChemCam Data[J]. Journal of Geophysical Research: Planets,2018-01-01,123(8)