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 [CF] 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
Al 21541.2008 ppm 736.1000 Univariate Calibration Calibration Free LIBS
Sr 237.2664 ppm 407.5000 Univariate Calibration Calibration Free LIBS
O 125681.4757 ppm 777.1000 Univariate Calibration Calibration Free Calculation
Ca 161051.5290 ppm 443.3000 Univariate Calibration Calibration Free LIBS
Fe 49072.1605 ppm 404.4000 Univariate Calibration Calibration Free LIBS
Si 50587.3667 ppm 386.1000 Univariate Calibration Calibration Free
K 9675.0194 ppm 766.2000 Univariate Calibration Calibration Free LIBS
Ti 3528.9554 ppm 498.0000 Univariate Calibration Calibration Free LIBS
Mg 27140.8646 ppm 383.0000 Univariate Calibration Calibration Free LIBS
Ba 566.0618 ppm 493.2000 Univariate Calibration Calibration Free LIBS
Na 9132.1237 ppm 588.7000 Univariate Calibration Calibration Free LIBS