LIBS Info: Element Analysis
| Title | Authors | Material | Detector | Spectrometer | Software |
|---|---|---|---|---|---|
| A new detection system for laser induced breakdown spectroscopy based on an acousto-optical tunable filter coupled to a photomultiplier: Application for manganese determination in steel | Fabiano Barbieri Gonzaga, Celio Pasquini | Steel | Brimrose AOTF | Photomultiplier | |
| Laser: | Nd:YAG 1064.0000nm 110.0000mJ 20.000Hz |
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| Gate Delay: | Noneus | ||||
| Gate Width: | Noneus | ||||
| This paper uses an Acousto Optic Tunable Filter. This device works as a narrow pass, but tunable, optical filter. The authors use it to measure Manganese in steel by measuring intensity at 15 different wavelengths - 5 to determine the peak intensity of a Mn line, 5 to determine background and 5 to determine Fe (for signal ratioing). Device has the advantage of being compact. However, has disadvantages common to all monochromator methods where intensities from different laser shots are compared | |||||
| Element | Detection Limit (ppm) | Wavelength (nm) | Other Wavelengths (nm) | Calibration Method | Calibration Range (ppm) | Notes |
|---|
| Element | RMSE (ppm) | Wavelength (nm) | Calibration Method | Notes |
|---|---|---|---|---|
| Mn | 410.4875 ppm | 293.4000 | Univariate Calibration | Novel AOTF monochromator used. Ratioed to Fe at 297.3nm |