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 |
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| 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 | 777.1000 | 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 |