scholarly journals Identification of Elements in Some Sudanese Gasoline Types Using Nd:YAG Laser Induced Breakdown Spectroscopy

Nd YAG Laser ◽  
10.5772/36658 ◽  
2012 ◽  
Author(s):  
Nafie A. ◽  
Ahmed Mohamed
Keyword(s):  
Nd:Yag Laser ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

scholarly journals Compact diode-pumped Nd:YAG laser for remote analysis of low-alloy steels by laser-induced breakdown spectroscopy

2018 ◽  
Vol 33 (2) ◽  
pp. 294-303 ◽  
Author(s):  
V. N. Lednev ◽  
A. E. Dormidonov ◽  
P. A. Sdvizhenskii ◽  
M. Ya Grishin ◽  
A. N. Fedorov ◽  
...  
Keyword(s):  
Nd:Yag Laser ◽  
Laser Induced Breakdown Spectroscopy ◽  
Low Alloy Steels ◽  
Breakdown Spectroscopy ◽  
Low Weight ◽  
Laser Induced Breakdown ◽  
Alloy Steels ◽  
Diode Pumped ◽  
Remote Analysis ◽  
Diode Pumped Nd:Yag Laser

A low weight diode-pumped Nd:YAG laser (400 g, 1064 nm, 5 ns, 130 mJ per pulse) was developed for a compact laser-induced breakdown spectroscopy (LIBS) system to be installed on a robotized arm.

scholarly journals Компактная лазерная система для дистанционных измерений методом лазерно-искровой эмиссионной спектроскопии на основе Nd : YAG-лазера с самообращением волнового фронта

2019 ◽  
Vol 45 (9) ◽  
pp. 13
Author(s):  
В.Ф. Лебедев ◽  
К.В. Павлов ◽  
Г.В. Бурковский ◽  
А.В. Федин
Keyword(s):  
Nd:Yag Laser ◽  
Phase Conjugation ◽  
Laser System ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Remote Analysis

Compact laser system based on Nd:YAG-laser with self-phase conjugation for remote analysis of substances at least ten meters distance by the Laser-Induced Breakdown Spectroscopy was proposed.

Compositional Analysis of Polychromes by Laser-Induced Breakdown Spectroscopy

2008 ◽  
Vol 587-588 ◽  
pp. 657-661 ◽  
Author(s):  
Ana J. López ◽  
Mari Paz Mateo ◽  
Ana Santaclara ◽  
Armando Yáñez
Keyword(s):  
Nd:Yag Laser ◽  
Compositional Analysis ◽  
Laser Source ◽  
Laser Induced Breakdown Spectroscopy ◽  
Depth Profiles ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

This study deals with the analysis and characterization of wood polychromes by means of Laser-Induced Breakdown Spectroscopy (LIBS). Specimens from a Baroque altarpiece have been analyzed by using a Q-switched Nd:YAG laser source at the wavelength of 355 nm. Previously, a library of characteristic LIBS spectra of the most commonly used pigments and other materials involved was obtained. The knowledge of these spectra allowed us to identify the main constituents of the different layers in polychromes and to obtain compositional depth profiles.

Laser-Induced Breakdown Spectroscopy Combined With Spatial Confinement of Plasmas and Laser-Induced Fluoresence for Trace-Materials Detection

2009 ◽  
Author(s):  
Y. F. Lu ◽  
X. K. Shen ◽  
H. Ling
Keyword(s):  
Optical Parametric Oscillator ◽  
Nd:Yag Laser ◽  
Emission Intensity ◽  
Laser Induced Breakdown Spectroscopy ◽  
Spatial Confinement ◽  
Breakdown Spectroscopy ◽  
Optical Parametric ◽  
Laser Induced Breakdown ◽  
Plasma Plumes ◽  
Atomic Lines

Laser-induced breakdown spectroscopy (LIBS) with spatial confinement effects and LIBS combined with laser-induced fluorescence (LIBS-LIF) have been investigated to improve the detection sensitivity and element-selectivity of LIBS. An obvious enhancement in the emission intensity of aluminum (Al) atomic lines was observed when a cylindrical wall was placed to spatially confine the plasma plumes. The maximum enhance factor for the emission intensity of Al atomic lines was measured to be around 10. Assuming local thermodynamic equilibrium conditions, the plasma temperatures are estimated to be in a range from 4,000 to 5,800 K. It shows that the plasma temperature increased by around 1,000 K when the cylindrical confinement was applied. Fast images of the laser-induced Al plasmas show that the plasmas were compressed into a smaller volume with a pipe presented. LIBS-LIF has been investigated to overcome the matrix effects of LIBS for the detection of trace uranium (U) in solids. An optical parametric oscillator wavelength-tunable laser was used to resonantly excite the uranium atoms and ions within the plasma plumes generated by a Q-switched Nd:YAG laser. Both atomic and ionic lines can be selected to detect their fluorescence lines. A U concentration of 462 ppm in a glass sample can be detected using this technique at an excitation wavelength of 385.96 nm for resonant excitation of U II and a fluorescence line wavelength of 409.01 nm from U II. The mechanism of spatial confinement effects and the influence of relevant operational parameters of LIBS-LIF are discussed. In this work, detection in open air of trace phosphorus (P) in steels using LIBS-LIF has also been investigated. The optical parametric oscillator laser was used to resonantly excite the P atoms within plasma plumes generated by the Q-switched Nd:YAG laser. A set of steel samples with P concentrations from 3.9 to 720 ppm were analyzed using LIBS-LIF at wavelengths of 253.40 and 253.56 nm for resonant excitation of P atoms and fluorescence lines at wavelengths of 213.55 and 213.62 nm. The calibration curves were measured to determine the limit of detection for P in steels, which is estimated to be around 0.7 ppm.

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