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 |
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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 |
|---|---|---|---|---|
| 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 | 777.2000 | 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 |