Contribution of a martian atmosphere to laser-induced breakdown spectroscopy (LIBS) data and testing its emission characteristics for normalization applications

Schröder, Susanne; Rammelkamp, Kristin; Vogt, David; Gasnault, O.; Hübers, Heinz‐Wilhelm

doi:10.1016/j.icarus.2019.02.017

Cited by 16 publications

(11 citation statements)

References 33 publications

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“…The correlation suggests sodium chloride (NaCl), chlorate (NaClO 3 ), or perchlorate (NaClO 4 ) composition. We do not observe a correlation between O and Cl, so Na‐chlorate or Na‐perchlorate may be less likely, although LIBS data may not be very sensitive to variation in target O content (e.g., Schröder et al, ).…”

Section: Resultsmentioning

confidence: 56%

Mars Science Laboratory Observations of Chloride Salts in Gale Crater, Mars

Thomas

Ehlmann

Meslin

et al. 2019

Geophysical Research Letters

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The Mars Science Laboratory Curiosity rover is traversing a sequence of stratified sedimentary rocks in Gale crater that contain varied eolian, fluviodeltaic, and lake deposits, with phyllosilicates, iron oxides, and sulfate salts. Here, we report the chloride salt distribution along the rover traverse. Chlorine is detected at low levels (<3 wt.%) in soil and rock targets with multiple MSL instruments. Isolated fine‐scale observations of high chlorine (up to ≥15 wt.% Cl), detected using the ChemCam instrument, are associated with elevated Na2O and interpreted as halite grains or cements in bedrock. Halite is also interpreted at the margins of veins and in nodular, altered textures. We have not detected halite in obvious evaporitic layers. Instead, its scattered distribution indicates that chlorides emplaced earlier in particular members of the Murray formation were remobilized and reprecipitated by later groundwaters within Murray formation mudstones and in diagenetic veins and nodules.

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Section: Resultsmentioning

confidence: 56%

Mars Science Laboratory Observations of Chloride Salts in Gale Crater, Mars

Thomas

Ehlmann

Meslin

et al. 2019

Geophysical Research Letters

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“…Our normalization is currently applied after the continuum has been removed. Because of this, the sum of the signal in each spectrometer by which the spectrum is divided, is highly dependent upon the composition of the target [25]. For example, consider two targets with identical Ca content, one with a very high Fe content and one with very low Fe.…”

Section: Alternative Normalizationmentioning

confidence: 99%

Post-landing major element quantification using SuperCam laser induced breakdown spectroscopy

Anderson

Forni

Cousin

et al. 2022

Spectrochimica Acta Part B: Atomic Spectroscopy

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“…We apply standard ChemCam data preprocessing techniques (Wiens et al, 2013) followed by the peak fitting and normalization techniques described in detail by Thomas et al (2018) to report the normalized H 656.5 nm peak area. We normalized by dividing by the O 778 nm peak area (Thomas et al, 2018;, a nearby emission line in the same spectrometer and detector, which has recently been shown to be relatively insensitive to sample matrix in the laboratory (Schröder et al, 2019). ChemCam H peak area values have associated uncertainties from fitting the normalized spectra with an automated routine.…”

Section: Methodsmentioning

confidence: 99%