Download or read book Laser induced Breakdown Spectroscopy for Analysis of High Density Methane oxygen Mixtures written by Matthew Dackman and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The applicability of laser-induced breakdown spectroscopy (LIBS) toward greater than atmospheric density combustion diagnostics is examined. Specifically, this involves ascertaining the feasibility of measuring chemical equivalence ratios directly from atomic emission spectra at high density. The need for such measurement arises from the desire to quantify real time, localized combustion performance in weakly mixed flows. Insufficiently mixed flows generally result in unwanted byproducts, possess the propensity for overall combustion instability, and are increasingly likely to experience localized flame extinction. We simulate methane/oxygen combustion in ambient pressures ranging 1 to 4 atmospheres, demonstrating these results to be analogous to what would be obtained under combustion conditions at pressures roughly 10 times greater. Given that LIBS measurements are independent of the sample's initial state, we introduce a reaction quenching species (neon) at large mole fraction into the mixture, thereby eliminating any chance of ignition and thus many experimental difficulties associated with observing high density atomic spectra.

Download or read book Laser Induced Breakdown Spectroscopy written by Jagdish P. Singh and published by Elsevier. This book was released on 2007-10-03 with total page 455 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser induced breakdown spectroscopy (LIBS) is basically an emission spectroscopy technique where atoms and ions are primarily formed in their excited states as a result of interaction between a tightly focused laser beam and the material sample. The interaction between matter and high-density photons generates a plasma plume, which evolves with time and may eventually acquire thermodynamic equilibrium. One of the important features of this technique is that it does not require any sample preparation, unlike conventional spectroscopic analytical techniques. Samples in the form of solids, liquids, gels, gases, plasmas and biological materials (like teeth, leaf or blood) can be studied with almost equal ease. LIBS has rapidly developed into a major analytical technology with the capability of detecting all chemical elements in a sample, of real- time response, and of close-contact or stand-off analysis of targets. The present book has been written by active specialists in this field, it includes the basic principles, the latest developments in instrumentation and the applications of LIBS . It will be useful to analytical chemists and spectroscopists as an important source of information and also to graduate students and researchers engaged in the fields of combustion, environmental science, and planetary and space exploration. * Recent research work* Possible future applications* LIBS Principles

Download or read book Laser Induced Breakdown Spectroscopy written by Andrzej W. Miziolek and published by Cambridge University Press. This book was released on 2006-09-07 with total page 615 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a comprehensive reference explaining the fundamentals of the LIBS phenomenon, its history and its fascinating applications across eighteen chapters written by recognized leaders in the field. This book will be of significant interest to researchers in chemical and materials analysis within academia and industry.

Download or read book Laser induced Breakdown Spectrometry written by Yong-Ill Lee and published by Nova Publishers. This book was released on 2000 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: When the output from a pulsed laser is forced onto a small spot of a sample, optically induced plasma, called laser-induced plasma (LIP) is formed at the surface. The plasma is formed when the laser power density exceeds the breakdown threshold value of the surface. The plasma can be used in sampling but is proposed as a source for atomic emission spectrometry (AES). In this case the technique is referred to as laser induced breakdown (emission) spectrometry (LIBS). The spectrally and temporally resolved detection and subsequent determination of the specific atomic emission reveals analytical information about the elemental composition of the sample, including solids, liquids and gases. This book is devoted to the analytical technique of laser-induced breakdown spectrometry. An introduction covering some basic principles of atomic emission spectrometry, analytical performance characteristics, and a comparison to more conventional techniques provides background information for the reader. The book is then conveniently divided into three parts: the first part described the instrumentation required and options available, the second part on fundamental studies of the laser plasma, and the third part on applications. Finally the future development of LIBS is presented.

Download or read book Handbook of Laser Induced Breakdown Spectroscopy written by David A. Cremers and published by John Wiley & Sons. This book was released on 2013-03-15 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: Starting from fundamentals and moving through a thorough discussion of equipment, methods, and techniques, the Handbook of Laser-Induced Breakdown Spectroscopy provides a unique reference source that will be of value for many years to come for this important new analysis method. The authors, with a total of over 60 years of experience in the LIBS method, use a combination of tutorial discussions ranging from basic principles up to more advanced descriptions along with extensive figures and photographs to clearly explain topics addressed in the text. In this second edition, chapters on the use of statistical analysis and advances in detection of weapons of mass destruction have been added. Tables of data related to analysis with LIBS have been updated. The Handbook of Laser-Induced Breakdown Spectroscopy, Second Edition: provides a thorough but understandable discussion of the basic principles of the method based on atomic emission spectroscopy, including recently available data leading to better characterization of the LIBS plasma; presents a discussion of the many advantages of the method along with limitations, to provide the reader a balanced overview of capabilities of the method; describes LIBS instrumentation ranging from basic set-ups to more advanced configurations; presents a comprehensive discussion of the different types of components (laser, spectrometers, detectors) that can be used for LIBS apparatuses along with suggestions for their use, as well as an up-to-date treatment of the newest advances and capabilities of LIBS instruments; presents the analytical capabilities of the method in terms of detection limits, accuracy, and precision of measurements for a variety of different sample types; discusses methods of sampling different media such as gases, liquids, and solids; presents an overview of some real-world applications of the method, with new emphasis on sampling of biologically and physically dangerous materials; provides an up-to-date list of references to LIBS literature along with the latest detection limits and a unique list of element detection limits using a uniform analysis method; provides annotated examples of LIBS spectra which can serve as references for the general reader and will be especially useful for those starting out in the field.

Download or read book Laser Induced Breakdown Spectroscopy LIBS written by Vivek K. Singh and published by John Wiley & Sons. This book was released on 2023-03-14 with total page 2162 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser Induced Breakdown Spectroscopy (LIBS) Essential resource covering the field of LIBS, with respect to its fundamentals, established and novel applications, and future prospects Laser Induced Breakdown Spectroscopy (LIBS), presents in two comprehensive volumes a thorough discussion of the basic principles of the method, including important recently available data which can lead to a better characterization of the LIBS plasma. This extensive work contains detailed discussions on the lasers, spectrometers, and detectors that can be used for LIBS apparatuses and describes various instrumentation, ranging from basic setups to more advanced configurations. As a modern resource, the work includes the newest advances and capabilities of LIBS instruments, featuring the recent developments of Dual-Pulse LIBS, Femtosecond LIBS, and Micro-LIBS as well as their applications. Throughout, the contributions discuss the analytical capabilities of the method in terms of detection limits, accuracy, and precision of measurements for a variety of samples. Lastly, an extensive range of applications is presented, including food technology, environmental science, nuclear reactors, nanoscience and nanotechnology, and biological and biomedical developments. Sample topics covered within the work include: iagnostics of laser induced plasma (LIP): LIBS plasma and its characteristics, factors affecting the LIBS plasma, methods of enhancing LIBS sensitivity, and LTE/non-LTE plasmas Instrumental developments in LIBS: light collection system and spectral detection systems, handheld LIBS, deep sea LIBS, and industrial sorters and analyzers Femtosecond laser ablation: laser-matter interaction, laser absorption, energy transport, ablation mechanisms and threshold, and plasma characterization Micro-analysis and LIBS imaging: microjoule laser sources, scaling libs to microjoule energies, micrometer scaling, advanced applications, and future prospects Spectroscopic and analytical scientists working with LIBS will find this wide-ranging reference immensely helpful in developing LIBS instrumentation and applications. Researchers and students in natural sciences and related programs of study will be able to use the work to acquire foundational knowledge on the method and learn about cutting-edge advancements being made in the field.

Download or read book Quantitative Study of Laser induced Breakdown Spectroscopy for Equivalence Ratio Measurement in Laminar Premixed Methane air Flames written by Alex Zimmerman and published by . This book was released on 2006 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Laser Induced Breakdown Spectroscopy written by Reinhard Noll and published by Springer Science & Business Media. This book was released on 2012-01-14 with total page 547 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive source of the fundamentals, process parameters, instrumental components and applications of laser-induced breakdown spectroscopy (LIBS). The effect of multiple pulses on material ablation, plasma dynamics and plasma emission is presented. A heuristic plasma modeling allows to simulate complex experimental plasma spectra. These methods and findings form the basis for a variety of applications to perform quantitative multi-element analysis with LIBS. These application potentials of LIBS have really boosted in the last years ranging from bulk analysis of metallic alloys and non-conducting materials, via spatially resolved analysis and depth profiling covering measuring objects in all physical states: gaseous, liquid and solid. Dedicated chapters present LIBS investigations for these tasks with special emphasis on the methodical and instrumental concepts as well as the optimization strategies for a quantitative analysis. Requirements, concepts, design and characteristic features of LIBS instruments are described covering laboratory systems, inspections systems for in-line process control, mobile systems and remote systems. State-of-the-art industrial applications of LIBS systems are presented demonstrating the benefits of inline process control for improved process guiding and quality assurance purposes.

Download or read book Laser Induced Breakdown Spectroscopy written by Sergio Musazzi and published by Springer. This book was released on 2014-07-08 with total page 577 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with the Laser-Induced Breakdown Spectroscopy (LIBS) a widely used atomic emission spectroscopy technique for elemental analysis of materials. It is based on the use of a high-power, short pulse laser excitation. The book is divided into two main sections: the first one concerning theoretical aspects of the technique, the second one describing the state of the art in applications of the technique in different scientific/technological areas. Numerous examples of state of the art applications provide the readers an almost complete scenario of the LIBS technique. The LIBS theoretical aspects are reviewed. The book helps the readers who are less familiar with the technique to understand the basic principles. Numerous examples of state of the art applications give an almost complete scenario of the LIBS technique potentiality. These examples of applications may have a strong impact on future industrial utilization. The authors made important contributions to the development of this field.

Download or read book Laser Induced Breakdown Spectroscopy in Biological Forensic and Materials Sciences written by Gábor Galbács and published by Springer Nature. This book was released on 2022-12-13 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a comprehensive overview of recent advances in the area of laser-induced breakdown spectroscopy (LIBS), focusing on its application to biological, forensic and materials sciences. LIBS, which was previously mainly used by physicists, chemists and in the industry, has now become a very useful tool with great potential in these other fields as well. LIBS has a unique set of characteristics including minimal destructiveness, remote sensing capabilities, potential portability, extremely high information content, trace analytical sensitivity and high throughput. With its content divided into two main parts, this book provides not only an introduction to the analytical capabilities and methodology, but also an overview of the results of recent applications in the above fields. The application-oriented, multidisciplinary approach of this work is also reflected in the diversity of the expert contributors. Given its breadth, this book will appeal to students, researchers and professionals interested in solving analytical/diagnostic/material characterization tasks with the application of LIBS.

Download or read book A Guide to Laser induced Breakdown Spectroscopy written by Pablo A. Foster and published by . This book was released on 2020 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This compilation focuses on laser-induced breakdown spectroscopy, a technique that provides a versatile qualitative and quantitative analysis of any sample. The authors present perspectives on the current trends in the use of laser-induced breakdown spectroscopy for insulation condition monitoring. A guide to laser-induced breakdown spectroscopy as a classification tool is provided, along with combinations of well-established classification algorithms with laser-induced breakdown spectroscopy and their implementation schemes"--

Download or read book Spectroscopic Analysis of Chemical Species in Carbon Plasmas Induced by High power IR CO2 Laser written by J. J. Camacho and published by Novinka Books. This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes certain fundamentals of laser-induced breakdown spectroscopy (LIBS) and the experimental results obtained from ultraviolet-visible-near infrared (UV-Vis-NIR) spectra induced by laser ablation of a graphite target. The characteristics of the spectral emission intensities from the different species have been investigated as functions of the ambient pressure, laser irradiance, delay time and distance from the target. Excitation, vibrational and rotational temperatures, as well as ionisation degree and electron number density for some species were estimated. Time-gated spectroscopic studies have allowed estimation of time-of-flight (TOF) and propagation velocities for various emission species.

Download or read book Fossil Energy Update written by and published by . This book was released on 1984 with total page 878 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Laser Induced Breakdown Spectroscopy for Detection of Organic Residues written by Christopher G. Brown and published by . This book was released on 2011 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser Induced Breakdown Spectroscopy (LIBS) is showing great potential as an atomic analytical technique. With its ability to rapidly analyze all forms of matter, with little-to-no sample preparation, LIBS has many advantages over conventional atomic emission spectroscopy techniques. With the maturation of the technologies that make LIBS possible, there has been a growing movement to implement LIBS in portable analyzers for field applications. In particular, LIBS has long been considered the front-runner in the drive for stand-off detection of trace deposits of explosives. Thus there is a need for a better understanding of the relevant processes that are responsible for the LIBS signature and their relationships to the different system parameters that are helping to improve LIBS as a sensing technology. This study explores the use of LIBS as a method to detect random trace amounts of specific organic materials deposited on organic or non-metallic surfaces. This requirement forces the limitation of single-shot signal analysis. This study is both experimental and theoretical, with a sizeable component addressing data analysis using principal components analysis to reduce the dimensionality of the data, and quadratic discriminant analysis to classify the data. In addition, the alternative approach of 'target factor analysis' was employed to improve detection of organic residues on organic substrates. Finally, a new method of characterizing the laser-induced plasma of organics, which should lead to improved data collection and analysis, is introduced. The comparison between modeled and experimental measurements of plasma temperatures and electronic density is discussed in order to improve the present models of low-temperature laser induced plasmas.

Download or read book Laser induced Breakdown Spectroscopy LIBS and Digital Image Processing for Pigment Analysis written by Rosemarie Chinni and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this project is to show how laser-induced breakdown spectroscopy (LIBS) and digital imaging processing can be used for indirect dating, authentication, and identification of oil paint pigments. Ten oil paint pigments from traditional and modern palettes were used for the analysis. Since synthetic paints (modern) were not available prior to the 19 century, the presence of a synthetic paint could allow for determination of whether the artwork was conserved in the past or it if was a forgery. LIBS and digital imaging processing were used to analyze the oil paint pigments in both pure form and binary mixture form. In LIBS, a laser pulse is focused on a surface and this focused pulse heats, ablates, atomizes, and ionizes the surface material. This causes the formation of a plasma and the light emitted by the plasma is collected, spectrally resolved, and detected. Elements contained in the sample can be identified by their distinctive spectral signatures. LIBS can provide both qualitative and quantitative results. It has many applications from space to defense including metal sorting, explosive and fissile material detection, lead in paint determination, heavy metal contamination in soil, identification of cultural heritage objects, etc. For this part of the study, the data was taken on pure and binary mixtures using ten shot accumulation analysis. The data was analyzed to determine what spectral emission lines could be used to uniquely determine one pigment from another. The pure and mixture pigments in single and multilayer samples were analyzed with image processing technology and algorithms. The digital images were used to create image histograms. Using the image histogram, the peak location was used to determine if differences among the pure and binary mixture pigments existed and whether unique peak locations in the histograms of the pure pigments or mixture pigments were seen.

Download or read book Laser Induced Breakdown Spectroscopy for Elemental Process Monitoring of Slurry Streams written by James Dudley Winefordner and published by . This book was released on 2000 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: The goal of this research program was to develop the method of laser-induced breakdown spectroscopy (LIBS) for applications in the phosphate industry. This would include rapid elemental analysis for P, Mg, Si and Fe in materials at various stages of phosphate mining and processing, using off-line, at-line and on-line measurement approaches. Several experimental systems were developed and evaluated. A research instrument with a high resolution spectrometer and gated, intensified CCD detector was used for initial fundamental studies.

Download or read book Influence of Ambient Gas on Laser Induced Breakdown Spectroscopy of Uranium Metal written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Laser-induced breakdown spectroscopy (LIBS) is regarded as a suitable method for the remote analysis of materials in any phase, even in an environment with high radiation levels. In the present work we used the third harmonic pulse of a Nd:YAG laser for ablation of uranium metal and measured the plasma emission with a fiber-optic spectrometer. The LIBS spectra of uranium metal and their features in different ambient gases (i.e., argon, neon, oxygen, and nitrogen) at atmospheric pressure were studied. Strong continuum spectrum and several hundreds of emission lines from UI and UII were observed. It is found that the continuum spectrum observed in uranium not only comes from bremsstrahlung emission but is also due to the complex spectrum of uranium. The influence of ambient gas and the gas flow rate for ablation of uranium metal was investigated. The experimental results indicate that the intensity of the uranium lines was enhanced in argon and nitrogen. However, the intensity of uranium lines was decreased in oxygen due to the generation of UO and other oxides. The results also showed that the highest intensity of uranium lines were obtained in argon gas with a gas flow rate above 2.5 L/min. The enhanced mechanism in ambient gas and the influence of the gas flow rate were analyzed in this work.