LIBS Info: Element Analysis
| Title | Authors | Material | Detector | Spectrometer | Software |
|---|---|---|---|---|---|
| Multivariate calibration of spectra obtained by Laser Induced Breakdown Spectroscopy of plutonium oxide surrogate residues | Markandey M. Tripathi, Kemal E. Eseller, Fang Y. Yueh, Jagdish P. Singh | Glass | Mechelle 5000 | Mechelle 5000 | Solis |
| Laser: | Nd:YAG 532.0000nm 50.0000mJ 10.000Hz |
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| Gate Delay: | 3.000us | ||||
| Gate Width: | 5.000us | ||||
| In these experiments, Ce is used as a surrogate for Pu in the evaluation of LIBS for the analysis of glasses [which are expected to be used to safely store radioactive materials]. Both univariate and multivariate (PLS and PCR) were used. Spectra were collected only in the 300-500nm range. Multivariate methods gave significantly better results than Univariate, with PLS giving the best RMSECs. | |||||
| Element | Detection Limit (ppm) | Wavelength (nm) | Other Wavelengths (nm) | Calibration Method | Calibration Range (ppm) | Notes |
|---|
| Element | RMSE (ppm) | Wavelength (nm) | Calibration Method | Notes |
|---|---|---|---|---|
| Ce | 4.4800 % | 413.3800 | Univariate | Univariate calibration using Ce ratioed to Fe (at 373.5nm) [giving improved results over Ce peak on its own]. |
| Fe | 0.5600 % | 373.5000 | Univariate Calibration | Univariate calibration |
| Cr | 2.9400 % | 360.5500 | Univariate Calibration | Univariate Calibration. |
| Mo | 1.4600 % | 379.8400 | Univariate Calibration | Univariate Calibration |
| Ni | 0.3400 % | 351.5100 | Univariate Calibration | Univariate Calibration |
| Ce | 3.8800 % | -10.0000 | Multivariate Calibration (PCR) | Multivariate Calibration (PCR) |
| Fe | 0.1400 % | -10.0000 | Multivariate Calibration (PCR) | Multivariate Calibration (PCR) |
| Cr | 0.5800 % | -10.0000 | Multivariate Calibration (PCR) | Multivariate Calibration (PCR) |
| Mo | 0.4600 % | -10.0000 | Multivariate Calibration (PCR) | Multivariate Calibration (PCR) |
| Ni | 0.0600 % | -10.0000 | Multivariate Calibration (PCR) | Multivariate Calibration (PCR) |
| Ce | 2.9300 % | -10.0000 | Multivariate Calibration (PLS) | Multivariate Calibration (PLS) |
| Fe | 0.1100 % | -10.0000 | Multivariate Calibration (PLS) | Multivariate Calibration (PLS) |
| Cr | 0.4300 % | -10.0000 | Multivariate Calibration (PLS) | Multivariate Calibration (PLS) |
| Mo | 0.3500 % | -10.0000 | Multivariate Calibration (PLS) | Multivariate Calibration (PLS) |
| Ni | 0.0500 % | -10.0000 | Multivariate Calibration (PLS) | Multivariate Calibration (PLS) |