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
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