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 [External Standard] | 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 |
|---|---|---|---|---|
| Mg | 3024.9099 ppm | 383.0000 | Univariate Calibration | Normalised to Oxygen (777.1nm). Paper presents results as element to oxygen ratio. Data here has been converted back to percentages to make comparison with other results easier. |
| Na | 6901.0144 ppm | 588.7000 | Univariate Calibration | Normalised to Oxygen (777.1nm). Paper presents results as element to oxygen ratio. Data here has been converted back to percentages to make comparison with other results easier. |
| Sr | 76.8388 ppm | 407.5000 | Univariate Calibration | Normalised to Oxygen (777.1nm). Paper presents results as element to oxygen ratio. Data here has been converted back to percentages to make comparison with other results easier. |
| Ca | 11739.0800 ppm | 443.3000 | Univariate Calibration | Normalised to Oxygen (777.1nm). Paper presents results as element to oxygen ratio. Data here has been converted back to percentages to make comparison with other results easier. |
| Al | 66189.1985 ppm | 736.1000 | Univariate Calibration | Normalised to Oxygen (777.1nm). Paper presents results as element to oxygen ratio. Data here has been converted back to percentages to make comparison with other results easier. |
| Fe | 15613.7760 ppm | 404.4000 | Univariate Calibration | Normalised to Oxygen (777.1nm). Paper presents results as element to oxygen ratio. Data here has been converted back to percentages to make comparison with other results easier. |
| Ba | 166.1325 ppm | 493.2000 | Univariate Calibration | Normalised to Oxygen (777.1nm). Paper presents results as element to oxygen ratio. Data here has been converted back to percentages to make comparison with other results easier. |
| K | 4824.4818 ppm | 766.2000 | Univariate Calibration | Normalised to Oxygen (777.1nm). Paper presents results as element to oxygen ratio. Data here has been converted back to percentages to make comparison with other results easier. |
| Si | 35613.5508 ppm | 386.1000 | Univariate Calibration | Normalised to Oxygen (777.1nm). Paper presents results as element to oxygen ratio. Data here has been converted back to percentages to make comparison with other results easier. |
| Ti | 4814.5633 ppm | 498.0000 | Univariate Calibration | Normalised to Oxygen (777.1nm). Paper presents results as element to oxygen ratio. Data here has been converted back to percentages to make comparison with other results easier. |