Calibration free laser-induced breakdown spectroscopy of oxide materials

Praher, B.; Palleschi, Vincenzo; Viskup, Richard; Heitz, J.; Pedarnig, J.D.

doi:10.1016/j.sab.2010.03.010

Cited by 131 publications

(64 citation statements)

References 41 publications

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“…The most common techniques use calibration standards and calibration curves to evaluate concentrations from the instrument signals [28]. There is an alternative technique to analytically determine the sample composition, and it is known as calibration-free LIBS (CF-LIBS) [29][30][31]. To apply this method, three conditions are necessary for the ablation and the resulted plasma [32,33]: (i) plasma is optically thin, (ii) plasma must be in LTE, and (iii) stoichiometric ablation.…”

Section: Laser Plasmamentioning

confidence: 99%

Determination of a brass alloy concentration composition using calibration-free laser-induced breakdown spectroscopy

et al. 2015

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Laser-induced breakdown spectroscopy (LIBS) is a technique that can provide qualitative and quantitative measurements of the сharacteristics of irradiated metals. In the present work, we have calculated the parameters of the plasma produced from a brass alloy sample under the action of a pulsed Nd : YAG laser operating at 1064 nm. The emission lines of copper atoms (Cu I), zinc atoms (Zn I), and lead atoms (Pb I), which are elements of a brass alloy composition, were used to investigate the parameters of the brass plasma. The spectral profiles of Cu, Zn, and Pb lines have been used to extract the electron temperature and density of the brass alloy plasma. The characteristics of Cu, Zn, and Pb were determined quantatively by the calibration-free LIBS (CF-LIBS) method considering for accurate analysis that the laser-induced ablated plasma is optically thin in local thermodynamic equilibrium conditions and the plasma ablation is stoichiometric. The Boltzmann plot method was used to evaluate the plasma temperature, and the Stark broadened profiles were used to determine the electron density. An algorithm based on the experimentally measured values of the intensity of spectral lines and the basic laws of plasma physics was developed for the determination of Cu, Zn, and Pb concentrations in the brass sample. The concentrations calculated by CF-LIBS and the certified concentrations were very close.

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Section: Laser Plasmamentioning

confidence: 99%

Determination of a brass alloy concentration composition using calibration-free laser-induced breakdown spectroscopy

et al. 2015

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“…Calibration-free (CF) methods provide a more general framework for quantification without the need for calibrationcurves by accounting for matrix effects theoretically. This is achieved by applying the Boltzmann distribution law (Tognoni et al, 2010(Tognoni et al, , 2007Ciucci et al, 1999;Praher et al, 2010;Sallè et al, 2006), which assumes optically thin plasmas that are in local thermal equilibrium (LTE), to signals that contain peaks of all major elements in the target. Recently, multivariate analysis techniques have been applied to account for matrix bias through regression modeling of the spectra observed from samples of known composition.…”

Section: Signal Interpretationmentioning

confidence: 99%

“…While matrix-matched calibration-curves can be used for quantitative analysis of solids (Hunter and Piper, 2006;Eppler et al, 1996), various groups have successfully implemented CF-LIBS to quantify the composition of metal alloys (Tognoni et al, 2007(Tognoni et al, , 2010Ciucci et al, 1999;Herrera et al, 2009a) and metal oxides (Praher et al, 2010) in a gaseous environment, achieving relative accuracies of 5 to 15% for major elements. With regard to interpretation of natural sediments and rocks, most studies report degradation in accuracy due to the complexity of the signals obtained (Tognoni et al, 2010;Herrera et al, 2009b;Colao et al, 2004;De Giacomo et al, 2007).…”

Section: Sediments and Rocksmentioning

confidence: 99%

Development of a deep-sea laser-induced breakdown spectrometer for in situ multi-element chemical analysis

Thornton

Takahashi

Sato

et al. 2015

Deep Sea Research Part I: Oceanographic Research Papers

163

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a b s t r a c tSpectroscopy is emerging as a technique that can expand the envelope of modern oceanographic sensors. The selectivity of spectroscopic techniques enables a single instrument to measure multiple components of the marine environment and can form the basis for versatile tools to perform in situ geochemical analysis. We have developed a deep-sea laser-induced breakdown spectrometer (ChemiCam) and successfully deployed the instrument from a remotely operated vehicle (ROV) to perform in situ multi-element analysis of both seawater and mineral deposits at depths of over 1000 m. The instrument consists of a long-nanosecond duration pulse-laser, a spectrometer and a high-speed camera. Power supply, instrument control and signal telemetry are provided through a ROV tether. The instrument has two modes of operation. In the first mode, the laser is focused directly into seawater and spectroscopic measurements of seawater composition are performed. In the second mode, a fiberoptic cable assembly is used to make spectroscopic measurements of mineral deposits. In this mode the laser is fired through a 4 m long fiber-optic cable and is focused onto the target's surface using an optical head and a linear stage that can be held by a ROV manipulator. In this paper, we describe the instrument and the methods developed to process its measurements. Exemplary measurements of both seawater and mineral deposits made during deployments of the device at an active hydrothermal vent field in the Okinawa trough are presented. Through integration with platforms such as underwater vehicles, drilling systems and subsea observatories, it is hoped that this technology can contribute to more efficient scientific surveys of the deep-sea environment.

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“…The CF-LIBS method has been introduced recently 32 . We developed a modified CF-LIBS algorithm in order to increase the accuracy of element and oxide concentration values calculated from measured LIBS spectra 33 . This algorithm includes a fast iterative correction of radiation self-absorption effects and of plasma parameters.…”

Section: Laser-induced Breakdown Spectroscopy Of Functional Oxide Matmentioning

confidence: 99%

Pulsed-laser deposition and laser-induced breakdown spectroscopy of functional oxide materials

Pedarnig

2010

17th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics

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Pulsed-laser deposition (PLD) and laser-induced breakdown spectroscopy (LIBS) techniques are reviewed and new results on PLD and LIBS of functional oxide materials are reported. Nano-composite high-T c superconducting (HTS) films with enhanced critical current density are produced by laser ablation of novel ceramic targets. The transport properties of HTS thin films are modified by light-ion irradiation. Nano-patterning of HTS films is achieved by masked ion beam irradiation. Optically transparent epitaxial ZnO layers are grown by PLD and acoustic resonances in the GHz range are excited by piezoelectric actuation. LIBS is employed to analyze impurity trace elements in industrial oxide powder. For quantitative analysis of major and minor elements the calibration-free LIBS method is refined. This CF-LIBS method is employed to the analysis of multi-element materials and very good match with nominal concentration of oxides is achieved (relative error less than 20 %).

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Calibration free laser-induced breakdown spectroscopy of oxide materials

Cited by 131 publications

References 41 publications

Determination of a brass alloy concentration composition using calibration-free laser-induced breakdown spectroscopy

Determination of a brass alloy concentration composition using calibration-free laser-induced breakdown spectroscopy

Development of a deep-sea laser-induced breakdown spectrometer for in situ multi-element chemical analysis

Pulsed-laser deposition and laser-induced breakdown spectroscopy of functional oxide materials

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