Post-landing major element quantification using SuperCam laser induced breakdown spectroscopy
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Post-landing major element quantification using SuperCam laser induced breakdown spectroscopy. / Anderson, Ryan B.; Forni, Olivier; Cousin, Agnes; Wiens, Roger C.; Clegg, Samuel M.; Frydenvang, Jens; Gabriel, Travis S. J.; Ollila, Ann; Schröder, Susanne; Beyssac, Olivier; Gibbons, Erin; Vogt, David S.; Clavé, Elise; Manrique, Jose-Antonio; Legett, Carey; Pilleri, Paolo; Newell, Raymond T.; Sarrao, Joseph; Maurice, Sylvestre; Arana, Gorka; Benzerara, Karim; Bernardi, Pernelle; Bernard, Sylvain; Bousquet, Bruno; Brown, Adrian J.; Alvarez-Llamas, César; Chide, Baptiste; Cloutis, Edward; Comellas, Jade; Connell, Stephanie; Dehouck, Erwin; Delapp, Dorothea M.; Essunfeld, Ari; Fabre, Cecile; Fouchet, Thierry; Garcia-Florentino, Cristina; García-Gómez, Laura; Gasda, Patrick; Gasnault, Olivier; Hausrath, Elisabeth M.; Lanza, Nina L.; Laserna, Javier; Lasue, Jeremie; Lopez, Guillermo; Madariaga, Juan Manuel; Mandon, Lucia; Mangold, Nicolas; Meslin, Pierre-Yves; Nelson, Anthony E.; Newsom, Horton; Reyes-Newell, Adriana L.; Robinson, Scott; Rull, Fernando; Sharma, Shiv; Simon, Justin I.; Sobron, Pablo; Fernandez, Imanol Torre; Udry, Arya; Venhaus, Dawn; Mclennan, Scott M.; Morris, Richard V.; Ehlmann, Bethany.
In: Spectrochimica Acta - Part B Atomic Spectroscopy, Vol. 188, 106347, 2022.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Post-landing major element quantification using SuperCam laser induced breakdown spectroscopy
AU - Anderson, Ryan B.
AU - Forni, Olivier
AU - Cousin, Agnes
AU - Wiens, Roger C.
AU - Clegg, Samuel M.
AU - Frydenvang, Jens
AU - Gabriel, Travis S. J.
AU - Ollila, Ann
AU - Schröder, Susanne
AU - Beyssac, Olivier
AU - Gibbons, Erin
AU - Vogt, David S.
AU - Clavé, Elise
AU - Manrique, Jose-Antonio
AU - Legett, Carey
AU - Pilleri, Paolo
AU - Newell, Raymond T.
AU - Sarrao, Joseph
AU - Maurice, Sylvestre
AU - Arana, Gorka
AU - Benzerara, Karim
AU - Bernardi, Pernelle
AU - Bernard, Sylvain
AU - Bousquet, Bruno
AU - Brown, Adrian J.
AU - Alvarez-Llamas, César
AU - Chide, Baptiste
AU - Cloutis, Edward
AU - Comellas, Jade
AU - Connell, Stephanie
AU - Dehouck, Erwin
AU - Delapp, Dorothea M.
AU - Essunfeld, Ari
AU - Fabre, Cecile
AU - Fouchet, Thierry
AU - Garcia-Florentino, Cristina
AU - García-Gómez, Laura
AU - Gasda, Patrick
AU - Gasnault, Olivier
AU - Hausrath, Elisabeth M.
AU - Lanza, Nina L.
AU - Laserna, Javier
AU - Lasue, Jeremie
AU - Lopez, Guillermo
AU - Madariaga, Juan Manuel
AU - Mandon, Lucia
AU - Mangold, Nicolas
AU - Meslin, Pierre-Yves
AU - Nelson, Anthony E.
AU - Newsom, Horton
AU - Reyes-Newell, Adriana L.
AU - Robinson, Scott
AU - Rull, Fernando
AU - Sharma, Shiv
AU - Simon, Justin I.
AU - Sobron, Pablo
AU - Fernandez, Imanol Torre
AU - Udry, Arya
AU - Venhaus, Dawn
AU - Mclennan, Scott M.
AU - Morris, Richard V.
AU - Ehlmann, Bethany
N1 - Publisher Copyright: © 2022
PY - 2022
Y1 - 2022
N2 - The SuperCam instrument on the Perseverance Mars 2020 rover uses a pulsed 1064 nm laser to ablate targets at a distance and conduct laser induced breakdown spectroscopy (LIBS) by analyzing the light from the resulting plasma. SuperCam LIBS spectra are preprocessed to remove ambient light, noise, and the continuum signal present in LIBS observations. Prior to quantification, spectra are masked to remove noisier spectrometer regions and spectra are normalized to minimize signal fluctuations and effects of target distance. In some cases, the spectra are also standardized or binned prior to quantification. To determine quantitative elemental compositions of diverse geologic materials at Jezero crater, Mars, we use a suite of 1198 laboratory spectra of 334 well-characterized reference samples. The samples were selected to span a wide range of compositions and include typical silicate rocks, pure minerals (e.g., silicates, sulfates, carbonates, oxides), more unusual compositions (e.g., Mn ore and sodalite), and replicates of the sintered SuperCam calibration targets (SCCTs) onboard the rover. For each major element (SiO2, TiO2, Al2O3, FeOT, MgO, CaO, Na2O, K2O), the database was subdivided into five “folds” with similar distributions of the element of interest. One fold was held out as an independent test set, and the remaining four folds were used to optimize multivariate regression models relating the spectrum to the composition. We considered a variety of models, and selected several for further investigation for each element, based primarily on the root mean squared error of prediction (RMSEP) on the test set, when analyzed at 3 m. In cases with several models of comparable performance at 3 m, we incorporated the SCCT performance at different distances to choose the preferred model. Shortly after landing on Mars and collecting initial spectra of geologic targets, we selected one model per element. Subsequently, with additional data from geologic targets, some models were revised to ensure results that are more consistent with geochemical constraints. The calibration discussed here is a snapshot of an ongoing effort to deliver the most accurate chemical compositions with SuperCam LIBS.
AB - The SuperCam instrument on the Perseverance Mars 2020 rover uses a pulsed 1064 nm laser to ablate targets at a distance and conduct laser induced breakdown spectroscopy (LIBS) by analyzing the light from the resulting plasma. SuperCam LIBS spectra are preprocessed to remove ambient light, noise, and the continuum signal present in LIBS observations. Prior to quantification, spectra are masked to remove noisier spectrometer regions and spectra are normalized to minimize signal fluctuations and effects of target distance. In some cases, the spectra are also standardized or binned prior to quantification. To determine quantitative elemental compositions of diverse geologic materials at Jezero crater, Mars, we use a suite of 1198 laboratory spectra of 334 well-characterized reference samples. The samples were selected to span a wide range of compositions and include typical silicate rocks, pure minerals (e.g., silicates, sulfates, carbonates, oxides), more unusual compositions (e.g., Mn ore and sodalite), and replicates of the sintered SuperCam calibration targets (SCCTs) onboard the rover. For each major element (SiO2, TiO2, Al2O3, FeOT, MgO, CaO, Na2O, K2O), the database was subdivided into five “folds” with similar distributions of the element of interest. One fold was held out as an independent test set, and the remaining four folds were used to optimize multivariate regression models relating the spectrum to the composition. We considered a variety of models, and selected several for further investigation for each element, based primarily on the root mean squared error of prediction (RMSEP) on the test set, when analyzed at 3 m. In cases with several models of comparable performance at 3 m, we incorporated the SCCT performance at different distances to choose the preferred model. Shortly after landing on Mars and collecting initial spectra of geologic targets, we selected one model per element. Subsequently, with additional data from geologic targets, some models were revised to ensure results that are more consistent with geochemical constraints. The calibration discussed here is a snapshot of an ongoing effort to deliver the most accurate chemical compositions with SuperCam LIBS.
KW - Calibration
KW - Chemometrics
KW - Laser induced breakdown spectroscopy
KW - LIBS
KW - Mars
KW - Multivariate regression
KW - Regression
U2 - 10.1016/j.sab.2021.106347
DO - 10.1016/j.sab.2021.106347
M3 - Journal article
AN - SCOPUS:85122615015
VL - 188
JO - Spectrochimica Acta Part B: Atomic Spectroscopy
JF - Spectrochimica Acta Part B: Atomic Spectroscopy
SN - 0584-8547
M1 - 106347
ER -
ID: 290107072