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Time Resolved Optical Emission Spectroscopy Of Laser Induced Plasmas On Copper And Aluminum Surfaces And In A Graphite Furnace
Download Time Resolved Optical Emission Spectroscopy Of Laser Induced Plasmas On Copper And Aluminum Surfaces And In A Graphite Furnace full books in PDF, epub, and Kindle. Read online Time Resolved Optical Emission Spectroscopy Of Laser Induced Plasmas On Copper And Aluminum Surfaces And In A Graphite Furnace ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Time-resolved Optical Emission Spectroscopy of Laser-induced Plasmas on Copper and Aluminum Surfaces and in a Graphite Furnace by : Martha Rosentrater Joseph
Download or read book Time-resolved Optical Emission Spectroscopy of Laser-induced Plasmas on Copper and Aluminum Surfaces and in a Graphite Furnace written by Martha Rosentrater Joseph and published by . This book was released on 1994 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1995 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis American Doctoral Dissertations by :
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1994 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Time-resolved Visible and Extreme Ultraviolet Spectroscopy of Laser-produced Tin Plasma by : Joseph Fred O'Shay
Download or read book Time-resolved Visible and Extreme Ultraviolet Spectroscopy of Laser-produced Tin Plasma written by Joseph Fred O'Shay and published by . This book was released on 2007 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the final section of this study, we investigate the radiative properties of tin ablation plasma as the laser irradiance is varied by more than an order of magnitude. The effect of increased focused laser energy is manifested in a weak scaling of radiation temperature, and a significant broadening of the emission lifetime at the highest laser intensities. It is found that the resulting radiation conversion efficiency is not a strong function of laser intensity within the parameter regime of this work. It is shown that agreement between experimental and simulated plasma conditions becomes progressively worse in the high-irradiance regime as the ionization and radiative transfer models play increasingly dominant roles in the plasma energetics.
Book Synopsis Space and Time Resolved Spectroscopy of Laser-produced Plasmas by :
Download or read book Space and Time Resolved Spectroscopy of Laser-produced Plasmas written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The determination of level populations and detailed population mechanisms in dense plasmas has become an increasingly important problem in atomic physics. In this work, the density variation of line intensities and level populations in aluminum K-shell and molybdenum and silver L-shell emission spectra have been measured from high-powered, laser-produced plasmas. For each case, the density dependence of the observed line emission is due to the effect of high frequency electron-ion collisions on metastable levels. The density dependent line intensities vary greatly in laser-produced plasmas and can be used to extract detailed information concerning the population kinetics and level populations of the ions. The laser-plasmas had to be fully characterized in order to clearly compare the observed density dependence with atomic theory predictions. This has been achieved through the combined use of new diagnostic instruments and microdot targets which provided simultaneously space, time, and spectrally resolved data. The plasma temperatures were determined from the slope of the hydrogen-like recombination continuum. The time resolved electron density profiles were measured using multiple frame holographic interferometry. Thus, the density dependence of K-shell spectral lines could be clearly examined, independent of assumptions concerning the dynamics of the plasma. In aluminum, the electron density dependence of various helium-like line intensity ratios were measured. Standard collisional radiative equilibrium models fail to account for the observed density dependence measured for the ''He/sub .cap alpha.//IC'' ratio. Instead, a quasi-steady state atomic model based on a purely recombining plasma is shown to accurately predict the measured density dependence. This same recombining plasma calculation successfully models the density dependence of the high-n ''He/sub .gamma.//He/sub .beta./'' and ''He/sub delta//He/sub .beta./'' helium-like resonance line intensity ratios.
Book Synopsis Laser Spectroscopy and Photochemistry on Metal Surfaces by : Hai-Lung Dai
Download or read book Laser Spectroscopy and Photochemistry on Metal Surfaces written by Hai-Lung Dai and published by World Scientific. This book was released on 1995 with total page 650 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using lasers to induce and probe surface processes has the advantages of quantum state specificity, species selectivity, surface sensitivity, fast time-resolution, high frequency resolution, and accessibility to full pressure ranges. These advantages make it highly desirable to use light to induce, control, or monitor surface chemical and physical processes. Recent applications of laser based techniques in studying surface processes have stimulated new developments and enabled the understanding of fundamental problems in energy transfer and reactions. This volume will include discussions on spectroscopic techniques, energy transfer, desorption dynamics, and photochemistry.
Book Synopsis Optical Emission Spectroscopy of Laser Induced Plasmas Containing Carbon and Transitional Metals by : David Edmond Motaung
Download or read book Optical Emission Spectroscopy of Laser Induced Plasmas Containing Carbon and Transitional Metals written by David Edmond Motaung and published by . This book was released on 2007 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: In situ optical emission spectroscopic studies on carbon plasma containing transitional metals by laser-furnace method of synthesizing carbon nanotubes have been carried out. The aim of this study was to investigate the changes of electron temperature and density when gas flow and pressure are varied.
Book Synopsis Space and Time Resolved Spectroscopy of Laser-produced Plasmas by : Bruce Kai Fong Young
Download or read book Space and Time Resolved Spectroscopy of Laser-produced Plasmas written by Bruce Kai Fong Young and published by . This book was released on 1988 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser-induced Plasma as a Function of the Laser Parameters and the Ambient Gas by : Xueshi Bai
Download or read book Laser-induced Plasma as a Function of the Laser Parameters and the Ambient Gas written by Xueshi Bai and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser-induced breakdown spectroscopy (LIBS) has been invented for more than 50 years, which analyzes the spectrum of the laser-induced plasma to determine the elemental composition of the ablated sample. Recently, LIBS technique has been well developed and applied in different domains, for example oceanic exploration, pollution monitoring in the environment. LIBS uses the ablation plasma as a light source that contains the elemental composition information of the sample. However, the laser-induced plasma exhibits a transient behavior. Although time-resolved and gated detection can greatly improve the performance of the LIBS technique especially that of calibration-free LIBS (CF-LIBS) with a better determination of plasma temperature, the temporal evolution of the plasma is correlated to its morphology and its spatial inhomogeneity. The determination of the morphology as well as the internal structure of the plasma together with their evolution during plasma expansion into the ambient gas is therefore crucial for the optimization of the use of ablation plasma as a spectroscopic emission source. Evolutions of the morphology and the internal structure of the ablation plasma are considered as the consequence of its hydrodynamic expansion into the ambient gas. Following the thesis of Qianli Ma which has studied the effect of laser wavelength on the behavior of the plasma induced in an ambient gas of argon, the present thesis has used the same diagnostic techniques (time- and space-resolved emission spectroscopy and fast spectroscopic images) together with 1064 nm ns laser pulse ablation of a target of aluminum to investigate the effects of other parameters, such as the fluence and the duration of laser pulse, the effect of different ambient gases (argon and air), on the morphology and internal structure of the plasma. Furthermore, in order to understand the effects of these parameters on the properties of the plasma, the microscopic mechanisms during post ablation and the propagation of the plasma are also studied. While the plasma cools down in air, molecules are formed, AlO for instance. So the thesis also studied the condition for the formation of the molecules in the plasma. Beyond the practical interest of this study for LIBS, it provides also insights to the kinetics of the AlO molecule formation in laserinduced plasma.
Book Synopsis Time-resolved Spectroscopy Through Laser-heated Copper Foils by : Kelly Vivian Cone
Download or read book Time-resolved Spectroscopy Through Laser-heated Copper Foils written by Kelly Vivian Cone and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The volumetric heating of a thin copper target has been studied with time resolved x-ray spectroscopy. The copper target was heated by a plasma produced using the Lawrence Livermore National Laboratory's Compact Multipulse Terawatt (COMET) laser. A variable spaced grating spectrometer coupled to an x-ray streak camera measured soft x-ray emission (800 - 1450 eV) from the back of the copper target to characterize the bulk heating of the target. Radiation hydrodynamic simulations were modeled in 2-dimensions using the HYDRA code. The target conditions calculated by HYDRA were post-processed with the atomic kinetics code CRETIN to generate synthetic emission spectra. A comparison between the experimental and simulated spectra indicates the presence of specific ionization states of copper and the corresponding electron temperatures and ion densities throughout the laser-heated copper target.
Download or read book Physics Briefs written by and published by . This book was released on 1993 with total page 1180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser Induced Plasma Spectroscopy and Applications by :
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:
Book Synopsis Laser Induced Plasmas & Optical Diagnostics by : Magesh Thiyagarajan
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:
Book Synopsis Laser Spectroscopy And Photochemistry On Metal Surfaces (In 2 Parts) - Part 1 by : Hai-lung Dai
Download or read book Laser Spectroscopy And Photochemistry On Metal Surfaces (In 2 Parts) - Part 1 written by Hai-lung Dai and published by World Scientific. This book was released on 1995-12-16 with total page 645 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using lasers to induce and probe surface processes has the advantages of quantum state specificity, species selectivity, surface sensitivity, fast time-resolution, high frequency resolution, and accessibility to full pressure ranges. These advantages make it highly desirable to use light to induce, control, or monitor surface chemical and physical processes. Recent applications of laser based techniques in studying surface processes have stimulated new developments and enabled the understanding of fundamental problems in energy transfer and reactions. This volume will include discussions on spectroscopic techniques, energy transfer, desorption dynamics, and photochemistry.
Download or read book Metals Abstracts written by and published by . This book was released on 1996 with total page 1628 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Index Medicus written by and published by . This book was released on 2004 with total page 1938 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. for 1963- include as pt. 2 of the Jan. issue: Medical subject headings.
