Discrimination of composite graphite samples using remote filament-induced breakdown spectroscopy.

Stand-off detection of organic samples using filament-induced breakdown spectroscopy

As an alternative to focusing nanosecond pulses for stand-off LIBS detection of energetic materials, we use self-channeled femtosecond pulses from a Ti:Sapphire laser to produce filaments at 12 meters and create a plasma on copper, graphite and polyisobutylene film. We show the possibilities of this Laser-Induced Breakdown Spectroscopy configuration for thin organic sample detection on a surfac...

Remote Sensing via Femtosecond Filament Based Technologies

The use of laser-induced filaments for remote sensing is of interest due to unique capabilities, including: propagating unchanged over 1-100 m distances, the creation of high intensity (10 W/cm) and large spectral bandwidth, and the ability to control the position of filamentation in space by changing the spectral phase of the driving pulse. These characteristics are used here for remote detect...

The effect of self-absorption correction using internal reference on determining heavy metals concentration by laser induced breakdown spectroscopy

The identification and concentration of heavy metals, which may be so harmful for the body, is determined by the method of calibration-free laser-induced breakdown spectroscopy using a special strategy. First, the plasma temperature is obtained using the Boltzmann plot. Then, a line with an inappreciable self-absorption is considered for each element as the reference. The modified intensities o...

The effect of sequential dual-gas testing on laser-induced breakdown spectroscopy-based discrimination: Application to brass samples and bacterial strains☆

Analysis of natural and artificial ultramarine blue pigments using laser induced breakdown and pulsed Raman spectroscopy, statistical analysis and light microscopy.

Pulsed laser induced breakdown spectroscopy (LIBS) and Raman spectroscopy were performed using a novel laboratory setup employing the same Nd:YAG laser emission at 532 nm for the analysis of five commercially available pigments collectively known as "ultramarine blue", a sodium silicate material of either mineral origin or an artificially produced glass. LIBS and Raman spectroscopy have provide...