LIBS Info: Element Analysis

Title Authors Material Detector Spectrometer Software
A comparative study of different methodologies for quantitative rock analysis by Laser-Induced Breakdown Spectroscopy in a simulated Martian atmosphere Beatrice Salle, Jean-Luc Lacour, Patrick Mauchien, Pascal Fichet, Sylvestre Maurice, G. Manhes Geological Princeton Instruments ICCD Max PI Echelle
Laser: Nd:YAG
1064.0000nm
25.0000mJ
10.000Hz
Gate Delay: 0.200us
Gate Width: 0.500us
This paper investigates several different methods of analysis suitable for use by the ChemCam on the (then) proposed Mars Rover. All experiments are conducted at 3m standoff in a simulated Martian atmosphere (9 mbar CO2). 50 x 400 spectra used for each sample. No surface preparation used. The authors found a significant reduction in the measurement RSD if peaks above 25,000 arbitrary (Intensity) units were used. The text then discusses an explanation for this behaviour. These results are from using calibration curves, these for external standard normalisation and these for Calibration Free Libs
Element Detection Limit (ppm) Wavelength (nm) Other Wavelengths (nm) Calibration Method Calibration Range (ppm) Notes


Element RMSE (ppm) Wavelength (nm) Calibration Method Notes
O 79940.6029 ppm 777.2000 Univariate Calibration A range of different (geological) matrices were used for the calibration
Na 6434.4324 ppm 588.7000 Univariate Calibration A range of different (geological) matrices were used for the calibration
Mg 14270.0385 ppm 383.0000 Univariate Calibration A range of different (geological) matrices were used for the calibration
Si 153812.5889 ppm 386.1000 Univariate Calibration A range of different (geological) matrices were used for the calibration
Ca 7097.1825 ppm 443.3000 Univariate Calibration A range of different (geological) matrices were used for the calibration
Fe 16468.5761 ppm 404.4000 Univariate Calibration A range of different (geological) matrices were used for the calibration
Sr 43.3590 ppm 407.5000 Univariate Calibration A range of different (geological) matrices were used for the calibration
K 9322.8215 ppm 766.2000 Univariate Calibration A range of different (geological) matrices were used for the calibration
Ba 109.2703 ppm 493.2000 Univariate Calibration A range of different (geological) matrices were used for the calibration
Al 98538.4696 ppm 736.1000 Univariate Calibration A range of different (geological) matrices were used for the calibration
Ti 1528.4567 ppm 498.0000 Univariate Calibration A range of different (geological) matrices were used for the calibration