Download or read book Optically Thick Laser Induced Plasmas in Spectroscopic Analysis written by Fatemeh Rezaei and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies on the plasma physics has been grown over the past few decades as a major research field. The plasma can be produced by different sources such as acr, spark, electric discharge, laser and so on. The spectral radiation of the plasma which acts as its fingerprint, contains valuable information about plasma features. Characterization of plasmas by spectroscopic measurement is a powerful tool for increasing the knowledge and applications of these kinds of radiation sources. Therefore, the spectral diagnostics methods are proposed which are based on measurement of spectral lines intensity, estimation of continuous and absorption radiation, and as well as determination of shifts and halfwiths of the spectrum [1]. The fundamental characteristic parameters of the plasma, id est, the number densities of plasma species, electron temperature, and as well as particle transport property at each plasma space can be determined by optical emission spectroscopy and utilizing appropriate methods [2]. For accurate evaluation of plasma parameters, its thickness must be thoroughly considered. Generally, the plasmas can be separated into two categories of thin and thick groups. In thin plasmas, the re-absorption of radiation is negligible. Consequently, in spectroscopic analysis, the non-self-absorbed spectral radiation is evaluated by considering the summation of all spectral emissions along the line of sight. In optically thick plasmas, the radiation trapping happens which leads to the self-absorption phenomenon in spectroscopic analysis that is explained with details in below section.
Download or read book Laser Induced Plasma Spectroscopy and Applications written by and published by . This book was released on 2002 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Laser Induced Plasma Spectroscopy and Applications written by and published by . This book was released on 2003 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: The OSA topical meetings that received support under this grant provided a forum for researchers in various specialty areas to meet and share ideas and technology in their fields. Following are the meetings that were supported by this grant: ̂Advanced Solid State Lasers - This meeting provided a forum for leading edge results in the fields of solid state lasers, laser materials, nonlinear optical materials and high power diode lasers. ̂Laser Applications to Chemical and Environmental Analysis - This meeting presented and discussed advances in the use of lasers for chemical analysis and environmental monitoring. ̂Biomedical Optics - This meeting was composed of three meetings that offered a unique venue to present and discuss recent research activities and developments in the field of lasers and optics in biomedicine. ̂Ultrafast Phenomena - This meeting brought together a multidisciplinary group sharing a common interest in the generation of ultrashort pulses in the picosecond, femtosecond, and attosecond regimes and their application to studies of ultrafast phenomena in physics, chemistry, biology, material sciences and electronics. ̂Nonlinear Optics%- This meeting provided and international forum for discussion of all aspects of nonlinear optics, including new phenomena, novel devices, advanced materials and applications. ̂Nonlinear Guided Waves and their Applications - This meeting emphasized on development of new ideas and novel techniques in the areas of materials, fabrication, devices , applications and nonlinear theory. ̂Laser Induced Plasma Spectroscopy and Applications - This Meetings focused on major advances in LIBS fundamentals, instrumentation and applications and featured new commercial laboratory LIBS systems and advanced components, as well as field portable systems.
Download or read book Laser induced Breakdown Spectroscopy LIBS written by Andrzej W. Miziolek and published by . This book was released on 2014-05-14 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first 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 Plasma Spectroscopy written by Evgeniĭ Aleksandrovich Oks and published by Springer. This book was released on 1995 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plasma Spectroscopy develops the foundation of spectroscopy for plasmas containing quasi-monochromatic electric fields in the microwaves or optical range. This topic is of major importance for plasma spectroscopy and the diagnostic of technological microwave and radiofrequency discharges, plasma lasers of microwave, optical, and x-ray ranges, pulsed discharges employed as advanced radiation sources, magnetic and laser fusion, and ionospheric and astrophysical plasmas. This monograph presents novel nonlinear-optical methods for theoretical analysis of radiation of quantum systems in media, describes principles for measuring the field and plasma parameters, and discusses their practical applications.
Download or read book Lasers Induced Plasmas and Applications written by Radziemski and published by CRC Press. This book was released on 2020-09-10 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the physics of plasma initiation and reviews the features of dissipating, propagating plasmas. It deals with advances in diagnostics for high-energy, laser-fusion plasmas. The book reviews the basic physical processes, plasma characteristics of the "continuous optical discharge".
Download or read book Investigation of Physical and Spectral Characteristics of Laser induced Plasmas written by Vincent P. Hohreiter and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: The physical and optical characteristics of laser-induced plasmas (LIP) and the precision of measurements using laser-induced breakdown spectroscopy (LIBS) for aerosol and gas phase species are explored. In a series of coherent experiments properties of the LIP and the temporal, spatial, and energetic variations of interactions with entrained particles (aerosols) are evaluated from both a standpoint of basic plasma science and applied atomic spectroscopy. First, the evolution of a LIP is characterized in terms of its temporally-resolved spectral absorptivity, spectral emissivity, and free electron density during the first 500 nanoseconds. Transmission measurements reveal near opacity of the LIP at early times (10-50 ns) and essential transparency at longer times (500 ns).
Download or read book Plasma Science and Technology written by Tetsu Mieno and published by BoD – Books on Demand. This book was released on 2016-04-20 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the early twentieth century, Dr. Irving Langmuir actively studied plasma discharge and surface science. Since then, great progress has been made in the development of applications of discharges and plasmas such as discharge lamps, electric tubes, and arc welding. In relation to studies on space physics and controlled nuclear fusion, plasma physics has greatly advanced. Plasma chemistry has also progressed along with its applications in LSI fabrication technology, the chemical vapor deposition of functional films, and the production of nanomaterials. In the twenty-first century, the further development of applications of plasma physics and plasma chemistry is certainly expected. In this book, 18 chapters on the recent progress in plasma science and technology have been written by active specialists worldwide.
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 Spectroscopic Analysis of Laser Induced Plasmas written by Gabriele Cristoforetti and published by . This book was released on 2004 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Diagnostic Measurements of Optically Thick and Inhomogeneous Laser Induced Plasmas with Emphasis on Self absorption Effects written by Galan G. Moore and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This is due to the self-absorption experienced by each individual spectral line in the Boltzmann plot. In addition, this research introduces the Duplication factor (D) as a way to measure the degree of self-absorption experienced by a spectral line emitted from the LIP and as an avenue to calculate time resolved ionic number densities of different regions of the plasma. The ionic number density was determined by taking calculated D's and fitting them to theoretical Gouy (or duplication) curves. Several Barium (Ba) ion emission lines were observed from a pure Ba target with a Laser Induced Breakdown set-up containing a Nd:YAG laser, Acton 0.5 m spectrometer, and gated ICCD, and a spherical mirror was used for the duplication.
Download or read book Laser Induced Plasma Spectroscopy and Applications 2002 written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spectroscopic Investigation of Laser initiated Low pressure Plasmas in Atmospheric Gases written by R. A. Armstrong and published by . This book was released on 1982 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser-initiated breakdown of N2, 02, and Ar has been investigated st sub-atmospheric pressures using a pulsed (10 ns) Nd:yttrium aluminum garnet (Nd:YAG) laser at 1.06 micrometers. Breakdown thresholds have been determined from 3 to 760 torr and spectral analysis of the plasma emission has been carried out over the range 300-600 nm. Sharp spectral features arising from highly excited singly and multiply charged ions are reported, as well as an underlying continuum at intermediate pressure. Time resolved measurements indicate a complex kinetic dynamic optical behavior. (Author).
Download or read book Remote Compositional Analysis written by Janice L. Bishop and published by Cambridge University Press. This book was released on 2019-11-28 with total page 655 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive overview of the spectroscopic, mineralogical, and geochemical techniques used in planetary remote sensing.
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 Laser Induced Plasmas Optical Diagnostics written by Magesh Thiyagarajan and published by . This book was released on 2011-11 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Introduction to Plasma Spectroscopy written by Hans-Joachim Kunze and published by Springer Science & Business Media. This book was released on 2009-09-18 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although based on lectures given for graduate students and postgraduates starting in plasma physics, this concise introduction to the fundamental processes and tools is as well directed at established researchers who are newcomers to spectroscopy and seek quick access to the diagnostics of plasmas ranging from low- to high-density technical systems at low temperatures, as well as from low- to high-density hot plasmas. Basic ideas and fundamental concepts are introduced as well as typical instrumentation from the X-ray to the infrared spectral regions. Examples, techniques and methods illustrate the possibilities. This book directly addresses the experimentalist who actually has to carry out the experiments and their interpretation. For that reason about half of the book is devoted to experimental problems, the instrumentation, components, detectors and calibration.
