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Showing 1 to 20 of 23 for “"Laser induced breakdown spectroscopy (LIBS)"”.
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Laser-induced breakdown spectroscopy (libs): an innovative tool for studying bacteria
<p>Laser-induced breakdown spectroscopy (LIBS) has gained a reputation as a flexible and convenient technique for rapidly determining the elemental composition of samples with minimal or no sample preparation. In this dissertation, I will describe the benefits of using LIBS for the rapid …
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Laboratory evaluation of laser-induced breakdown spectroscopy (LIBS) as a new in situ chemical sensing technique for the deep ocean
… environment is becoming increasingly important. Laser-induced breakdown spectroscopy (LIBS) possesses many of the characteristics required for such in situ chemical sensing, and is a promising technique for field measurements in extreme environments. Although many LIBS researchers have focused …
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Laboratory evaluation of laser-induced breakdown spectroscopy (LIBS) as a new in situ chemical sensing technique for the deep ocean
… environment is becoming increasingly important. Laser-induced breakdown spectroscopy (LIBS) possesses many of the characteristics required for such in situ chemical sensing, and is a promising technique for field measurements in extreme environments. Although many LIBS researchers have focused …
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Laser-Induced Breakdown Spectroscopy of Micron Sized Particles with the Consideration of Industrial Applications
Laser-induced breakdown spectroscopy (LIBS) is a technology for performing spectral analysis of materials with little sample preparation, rapid measurement times, and minimal damage to the sample. Micro-LIBS is a form of LIBS which can be used to study micron-sized particles. Micron-sized particles …
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Laser induced breakdown spectroscopy of martian breccia Northwest Africa 7034: comparison with Mars Science Laboratory results
… Mars Science Laboratory (MSL) rover is utilizing laser-induced breakdown spectroscopy (LIBS) instrumentation to determine compositions of rocks shot in Gale crater, Mars, from a distance of 1.56-7 meters. At the same time, martian breccia meteorite Northwest Africa (NWA) 7034 was analyzed with the …
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Determining Elemental Concentrations of Nickel-Doped Iron Samples through the Method of Laser Induced Breakdown Spectroscopy
… material is oftentimes of the utmost importance. Laser induced breakdown spectroscopy (LIBS) is a method for determining compositional information of materials with minimal to no sample preparation and with limited destructiveness. In this work, an optical path configuration for achieving ablation …
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Development and Validation of Laser-Induced Breakdown Spectroscopy Methods for the Analysis of Aqueous Solutions
<p>Laser-induced breakdown spectroscopy (LIBS) is an analytical technique that uses the focused energy of a pulsed laser as a sampling and excitation source for atomic emission spectroscopy (AES). LIBS has some distinct advantages over traditional AES methods: ability to analyze any phase of …
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Laser scanning aggregates for real-time property identification
… Chemical composition testing is performed via Laser-Induced Breakdown Spectroscopy (LIBS), which involves firing a laser pulse at a sample and predicting its composition based on the spectrum of light emitted by the resulting plasma. Predictive models are generated via Partial Least Squares …
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Analyzing geological materials under martian conditions using laser-induced breakdown spectroscopy : plasma fundamentals, sample classification, and trace element quanitification
Laser-induced breakdown spectroscopy (LIBS) is an emission spectroscopy analysis technique that continues to be developed for the study of solids, liquids and gases. Geological applications for LIBS are a particularly exciting area of research, in part due to the capabilities of the technique to …
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Lead-Free Gunshot Residues as Forensic Evidence
… shooters. This study investigated the use of Laser-Induced Breakdown Spectroscopy (LIBS) and Scanning Electron Microscopy Energy-Dispersive X-ray Spectroscopy (SEM-EDX) as means of characterizing simulations of lead-free primers and GSR originating from the discharge of lead-free blank …
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Comparative Investigation of LIBS Spectra and Crater Morphology During Laser Ablation of Eutectic BiSn Alloys
Laser-based methods such as pulsed laser deposition (PLD) that are used for fabricating structural and functional materials are ripe for dramatic improvement. However, because laser–material interactions are dependent on detailed and largely unknown processes that occur during the laser ablation, …
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Mechanisms of Enhancement in Dual Pulse Laser Induced Breakdown Spectroscopy and Quantitative Measurements of Laser Induced Breakdown Spectroscopy in Bulk Aqueous Solution
… community's understanding and application of Laser Induced Breakdown Spectroscopy (LIBS) during recent years. Chapter one is a broad overview of LIBS as a technique including a brief history, the theory behind the technique, and the instrumentation typically used. This chapter also introduces …
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Online sorting of wood treated with chromated copper arsenate using laser induced breakdown spectroscopy
… efforts to develop an online detector using laser induced breakdown spectroscopy (LIBS) technology. By forming a plasma on the surface of the wood, the detector analyzed the spectral emission from the plasma to identify the metals present in the wood sample. This analytical process was …
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Controls on Carbonate Factory Distribution in a Restricted Intraplatform Basin: Upper Jurassic Smackover, Southwest Alabama
… measured via X-ray Fluorescence (XRF) and Laser Induced Breakdown Spectroscopy (LIBS). These proxies were grouped into redox, terrestrial, and nutrient to assess how oceanographic conditions influence carbonate sediment production and accumulation.The transgressive Lower Smackover is …
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Formation and Quantification of Corrosion Deposits in the Power Industry
… electron microscopy (SEM) and energy dispersive spectroscopy (EDS) have been used for studying the phases, morphologies and compositions of the iron oxides formed at Unit 1 and Unit 2 of secondary side of steamgenerator systems. Hematite and magnetite were found to be the dominant phases of iron …
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Hybrid Illinois Device for Research and Applications material analysis test-stand development for characterization of fusion plasma-material interactions
… with a multitude of diagnostics capable of laser-induced breakdown spectroscopy (LIBS), laser-induced desorption spectroscopy (LIDS), thermal desorption spectroscopy (TDS), and He/D2 differentiation. Preliminary experimental data demonstrating the functionality of sample motion and rotation, …
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Studying signatures of water on Mars at two macro and micro scales : orbital analyses of hillslope geomorphology and ChemCam calibration for surficial rock chemistry
… hillslope geomorphology and chemistry from laser-induced breakdown spectroscopy (LIBS). In the first set of studies on hillslopes, the expected differences in hillslope processes in extraterrestrial environments are explored. As on Earth, the major drivers of these processes are gravity and …
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Sparsity in Machine Learning: Theory and Applications
… Integer Optimization (MIO) sparse regression to Laser Induced Breakdown Spectroscopy (LIBS), a modern and important chemical analysis technique. We build a methodology for sparse and robust models in chemometrics and test it on various types of mineral ore. The MIO approach beats experts’ …
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Oscillator strength measurements in singly-ionized, doubly-ionized and neutral lanthanides and transition elements (sm, nd, pr, gd, cu, and fe) using laser-induced breakdown spectroscopy.
… these limiting issues. In this dissertation, laser-induced breakdown spectroscopy (LIBS) has been employed for the first time on a large scale as a spectroscopic technique for the rapid and convenient production of atomic and ionic plasmas as sources of atomic emission in order to determine …
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Sub-nanosecond UV filaments and their applications for remote spectroscopy and high-voltage discharges
… (NIR) femtosecond filament for remote spectroscopy. The short length (less than 1 m) and low energy (only several millijoule) of a single NIR filament limit these applications. Long-pulse UV filaments have therefore been proposed at UNM to overcome such limitations. This dissertation …
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