Journal ArticleDOI
Fiber-optic laser-induced breakdown spectroscopy of zirconium metal in air: Special features of the plasma produced by a long-pulse laser
Ayumu Matsumoto,Hironori Ohba,Masaaki Toshimitsu,Katsuaki Akaoka,Alexandre Ruas,Tetsuo Sakka,Ikuo Wakaida +6 more
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TLDR
In this article, the emission spectra of zirconium metal in air obtained for a normal-pulse laser (6 ns) and a longpulse (100 ns) (wavelength: 1064nm, pulse energy: 12.5mJ, spot diameter: 0.35mm) were compared to investigate the fundamental aspects of fiber-optic LIBS with the long-Pulse laser.About:
This article is published in Spectrochimica Acta Part B: Atomic Spectroscopy.The article was published on 2018-04-01. It has received 30 citations till now. The article focuses on the topics: Laser & Fiber laser.read more
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Sample temperature effect on laser ablation and analytical capabilities of laser induced breakdown spectroscopy
Vasily N. Lednev,Vasily N. Lednev,M. Ya. Grishin,M. Ya. Grishin,P. A. Sdvizhenskii,P. A. Sdvizhenskii,R. D. Asyutin,R. S. Tretyakov,A. Ya. Stavertiy,Sergey M. Pershin +9 more
TL;DR: In this article, the influence of sample temperature on the laser ablation process and analytical capabilities of laser induced breakdown spectroscopy (LIBS) was studied systematically, and the analytical performance of a LIBS probe which was developed for in situ elemental analysis of molten metals during the production of metal parts by additive manufacturing.
Carbon analysis for inspecting carbonation of concrete using a TEA CO_2 laser-induced plasma
TL;DR: It has been demonstrated that a spectrochemical analysis of carbon using the laser plasma method can be successfully applied to inspect the carbonation of concrete by detecting carbon produced in aged concrete by a chemical reaction of Ca(OH)2 with CO2 gas in environmental air, turning into CaCO3, which induces degradation of the quality of building concrete.
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Review on recent advances in analytical applications of molecular emission and modelling
TL;DR: In this article, a review of applications of laser-induced breakdown spectroscopy (LIBS) in recent years is presented, which mainly deals with two topics: the emission of halogen- and rare-earth-containing molecules and selective excitation of molecules by molecular laser induced fluorescence (MLIF).
Journal ArticleDOI
Development of microwave-enhanced fibre-coupled laser-induced breakdown spectroscopy for nuclear fuel debris screening at Fukushima
TL;DR: In this article, the enhancement of spectral intensity by superposing a 2.45 GHz semiconductor oscillated microwaves (MW) to the induced plasma of FC-LIBS was demonstrated.
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Antenna Characteristics of Helical Coil with 2.45 GHz Semiconductor Microwave for Microwave-Enhanced Laser-Induced Breakdown Spectroscopy (MW-LIBS)
TL;DR: In this article , a copper helical coil antenna was developed, characterized, and optimized for 2.45 GHz operations supplied by a microwave semiconductor oscillator for laser-induced breakdown spectroscopy enhanced by microwave.
References
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Journal ArticleDOI
Laser-Induced Breakdown Spectroscopy (LIBS), Part I: Review of Basic Diagnostics and Plasma–Particle Interactions: Still-Challenging Issues Within the Analytical Plasma Community
David W. Hahn,Nicoló Omenetto +1 more
TL;DR: Basic diagnostics aspects of laser-induced breakdown spectroscopy are focused on and a review of the past and recent LIBS literature pertinent to this topic is presented and previous research on non-laser-based plasma literature, and the resulting knowledge, is emphasized.
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Local Thermodynamic Equilibrium in Laser-Induced Breakdown Spectroscopy: Beyond the McWhirter criterion
Gabriele Cristoforetti,A. De Giacomo,Marcella Dell’Aglio,Stefano Legnaioli,Elisabetta Tognoni,Vincenzo Palleschi,Nicoló Omenetto +6 more
TL;DR: In this article, the authors reviewed the theoretical analysis underlying the concept of thermodynamic equilibrium and the derivation of the McWhirter criterion, and critically discussed its application to a transient and nonhomogeneous plasma, like that created by a laser pulse on solid targets.
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Computer simulated Balmer-alpha, -beta and -gamma Stark line profiles for non-equilibrium plasmas diagnostics
TL;DR: Balmer-alpha, -beta and -gamma lines have been calculated using computer simulations including ion dynamics effects for equilibrium and non-equilibrium conditions as discussed by the authors, and the results obtained allow us to supply diagnostic maps based on the widths of those lines, as well as the Stark broadened full line profiles and the dipolar correlation functions obtained in the simulations.
Journal ArticleDOI
Explosive change in crater properties during high power nanosecond laser ablation of silicon
TL;DR: In this article, the authors measured the resulting crater morphology with a white light interferometric microscope, showing that the craters show a strong nonlinear change in both the volume and depth when the laser irradiance is less than or greater than ≈ 2.2×1010
Journal ArticleDOI
Laser ablation in analytical chemistry.
TL;DR: Current issues in fundamental research, applications based on detecting photons at the ablation site and by collecting particles for excitation in a secondary source (ICP), and directions for the technology are discussed.