Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 20 for “"Plasma spectroscopy"”.
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ANTIMONY SPECIATION BY CHROMATOGRAPHIC SAMPLE INTRODUCTION TO PLASMA SPECTROSCOPY
… sample introduction directly coupled to plasma spectroscopic instruments to facilitate separations of Sb based upon molecular form coupled with sensitive detection methods. Fundamental studies, using NMR to investigate physical changes in ligands and ESI-MS to investigate molecular ions, …
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VUV laser-induced plasma spectroscopy for low level sulphur detection in steel
… a solid target a high density, high temperature plasma is formed. This plasma emits radiation across a wide spectral range, from the x-ray to the infra-red. In this thesis, a variant of the well-established spectroscopic technique known as Laser-Induced Plasma Spectroscopy (LIPS) is used in order …
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The evaluation of a low powered microwave induced plasma as an atom cell for atomic spectrometry
The range of plasma spectroscopy tends to increase with the introduction of more efficient plasma excitation sources. In this thesis the use of one such plasma excitation source, the microwave induced plasma is evaluated as an atom cell for atomic spectrometry. The modes of spectrometry evaluated …
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Analysis of Kyrock for Leaching of Impurities in Synthetic Rainwater
… of the samples using inductively coupled plasma spectroscopy showed inorganic compounds such as titanium oxide, vanadium oxide along with traces of arsenic. Elemental analysis of samples indicates a percent of carbon, and sulfur with no notable traces of nitrogen. Pyrolysis of the samples …
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Trace element analysis of bighorn sheep horns
… in all samples by inductively coupled argon plasma spectroscopy. Year of horn growth was determined for 154 of the samples. All elements of concentrations varied significantly with respect to location. Some elements varied similarly to other elements with respect to location, but most …
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Design of Optical Measurements for Plasma Actuators for the Validation of Quiescent and Flow Control Simulations
The concept of plasma flow control is a relatively new idea based on using atmospheric plasma placed near the edge of an air foil to reduce boundary layer losses. As with any new concept, it is important to be able to quantify theoretical assumptions with known experimental results for validation. …
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Determination of pool boiling Critical Heat Flux enhancement in nanofluids
… 15.0 micrometers for Silica. Inductively Coupled Plasma Spectroscopy (ICP-OES) analyses were also attempted to quantify the mass of the particle deposition but the results were inconsistent with the estimates from the SEM measurement.
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Theoretical Studies of L-shell X-ray Line Polarization and M-shell X-ray Spectroscopic Emission from Highly Ionized Xenon Ions
… development of intense radiation sources. X-ray plasma spectroscopy and spectropolarimetry are integral to the study of HED plasmas. Comparison of x-ray line emission spectra to non-local thermodynamic equilibrium (non-LTE) modeling and inclusion of non-thermal effects provides insights to …
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Removal of Heavy Metals from Drinking Water by Adsorption onto Limestone with a Focus on Copper and Aluminum Applications
… of time using limestone. Inductively coupled plasma spectroscopy was used for metal analysis. The effective removal rate of copper and aluminum was found to be four hours and one hour, respectively. This method of removal by using limestone is cost effective, eco-friendly, and hence, of great …
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Dissection of Soil Waterlogging Tolerance in Soft Red Winter Wheat using Genomic Approaches
… post-waterlogging using inductively coupled plasma spectroscopy. Yield components kernel number per spike (KNPS), kernel weight per spike (KWS) and thousand kernel weight (TKW) were measured at plant maturity. Negative correlations between TKW and KWS with aluminum and iron concentrations …
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Understanding the role of slag on geopolymer hardening and microstructural development
… solids using Fourier transform infrared spectroscopy (FT-IR). The main drawback of using FT-IR was that Si-O-T (T =Al, Si) vibrations from the initial ash, geopolymer product and calcium silicate hydrate, yields an overlapping spectrum bands resulting in a broad hump which is difficult to …
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Identification and Characterization of the Iron-Zinc Intermetallics Formed in Galvanneal steel
… by chemical titration and induction coupled plasma spectroscopy. Sample homogeneity was analyzed with an electron microprobe and a scanning transmission electron microscope. Finally, Mossbauer spectroscopy and X-ray diffraction were employed to characterize the microstructural properties of …
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The Effect of Continuous Flight Auger Pile Installation on the Soil-Pile Interface in the Mercia Mudstone Group
… techniques including inductively coupled plasma spectroscopy (ICP) and X-ray diffraction (XRD); with water contents, chemical content (ICP) and mineralogical content (XRD) tested. Plastic index and particle size distribution tests were used to show the physical effects of piling on the …
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Theoretical Modeling of Radiation-driven Atomic Kinetics of a Neon Photoionized Plasma
… atomic kinetics modeling of a photoionized neon plasma at conditions relevant to laboratory experiments performed at the Z-machine in Sandia National Laboratories. We describe an atomic kinetics model and code, ATOKIN, that was developed and used to compute the atomic level population …
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Theoretical and Experimental Studies of Radiation from High-Z Multiply Ionized L-shell Ions with Emphasis on X-ray Line Polarization
… application to high-energy-density (HED) plasmas is a complex and intricate problem. This dissertation intends to help in addressing this problem by providing a detailed theoretical and experimental study of radiation from high-Z multiply ionized ions that are influenced by a diverse set …
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In-situ, ταχεία και μη-διαταρακτική διαγνωστική διαδικασιών καύσης και των προϊόντων με φασματοσκοπία πλάσματος επαγόμενο από λέιζερ (LIBS)
… σπινθήρα: electrical Spark Induced Breakdown Spectroscopy (SIBS) όπου και πραγματοποιήθηκε η συγκριτική μελέτη της ακτινοβολίας του πλάσματος επαγόμενο μέσω οπτικής και ηλεκτρικής διέγερσης.
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Characterization of thermo-chemical properties of electric arc plasma actuators
Made available in DSpace on 2012-05-22T00:32:49Z (GMT). No. of bitstreams: 3 Sanders_Bradley.pdf: 3950226 bytes, checksum: 6d13168dd33011bda773e827fa05155e (MD5) Sanders_Bradley.docx: 27837244 bytes, checksum: bca4e05988b21491e4ef301725bb4666 (MD5) license.txt: 4065 bytes, checksum: …
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Investigating temperature distributions and thermal conduction effects in laser-heated plasmas relevant to Magnetized Liner Inertial Fusion
… R. C. Mancini, E. C. Harding, et al, Phys. Plasmas 27, 052704 (2020)[2] K. R. Carpenter, R. C. Mancini, E. C. Harding, et al, Phys. Rev. E 102, 023209 (2020)
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Spectroscopic Measurements of Magnetic Field and Electron Density on Wire Array and Laser Plasmas
… field and electron density distributions within plasmas are crucial parameters in the study of high energy density laboratory plasmas. These measurements are challenging because often the magnetic fields undergo significant spatial and temporal fluctuations. Of the few measurement techniques …
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Multiscale corrosion of zirconium carbide, carbon, and CF/ZRC under extreme environments
… conditions, inductively coupled air plasma (ICP) was used to simulate stagnation point heating seen in hypersonic flight environments. Zirconium carbide specimens were subjected to high-enthalpy air flow at surface temperatures between 1850 and 2525 °C. Corrosion was found to progress …