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 14 of 14 for “"Atomic spectroscopy"”.
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On-Chip Atomic Spectroscopy
This thesis presents the integration of atomic vapor cells with anti-resonant reflecting optical waveguides (ARROWs) fabricated on silicon chips. These potentially provide a compact platform for a number of optical applications, including the study of quantum coherence effects such as …
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Tungsten Coil Electrothermal Vaporization for Atomic Spectroscopy
… as an alternative sample introduction method in atomic spectroscopy for some time. Typically, electrothermal vaporizers made of graphite, but these devices do not lend well to mass production, are expensive, and require large power supplies for operation. In addition to these structural and …
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Development of a low-power molecular microwave plasma and its application as an atom source for atomic spectroscopy
… include laser-induced fluorescence (LIF), atomic emission spectroscopy (AES), and laser-enhanced ionization (LEI) [also known as the opto-galvanic effect (OGE)]. The major emphasis of the application work has been physical characterization of the low-power nitrogen plasma as an atom source …
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Flame spectroscopic studies of bismuth, lanthanum, lead and silver with particular reference to their determination in steels.
This thesis discusses the atomic spectroscopy of bismuth, lanthanum, lead and silver and describes the determination of trace amounts of the four metals in steel after the preliminary solvent extraction of the metals. A study of the interference effects of the matrix elements upon both the …
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Optical Emission Spectroscopy during Sputter Deposition of CdTe Solar Cells and CuTe-Based Back Contacts
… are studied in detail through optical emission spectroscopy. In order to extract plasma parameters, experimental data and simulations were matched together. We could extract excitation temperatures, vibrational temperatures and rotational temperatures of the plasmas. To explain the simulations …
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The evaluation of an argon and helium highly efficient microwave induced plasma as an element selective detector for packed column super critical fluid chromatography
Atomic emission spectroscopy is a powerful method for chemical analysis because it offers convenient qualitative and quantitative determination of the elemental composition of an analytical sample. Although most frequently used to determine the total concentration of a given analyte, atomic …
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Radiatively Cooled Magnetic Reconnection Experiments Driven by Pulsed Power
… resistive magnetohydrodynamic simulations. X-ray spectroscopy shows that these hotspots generate the majority of Al K-shell emission (around 1.6 keV), and exhibit temperatures (170 eV) much greater than that of the plasma inflows and the rest of the reconnection layer. The findings in this thesis …
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Evaluation of Arsenic and Selenium Quantitation in Marcellus Shales and Flowback Saline Waters using Thiol Cotton Fibre-Graphite Furnace Atomic Absorption Spectroscopy and Diffusive Gradient in Thin Film Techniques
… and selenium was carried out by graphite furnace atomic spectroscopy (GFAAS). Extraction of arsenic and selenium from Marcellus shale exposed to HSW and WRF6 for varying lengths of time is also reported.;In addition, the role of hydrofluoric acid in microwave-assisted digestion and in the …
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The determination of Arsenic in soil by ICP-OES
Please read the abstract in the section 00front of this document
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PRECISION MEASUREMENT TO STUDY STRONGLY CORRELATED SYSTEMS-FROM A SINGLE ION TO PHONONS IN AN ION CHAIN
… of new reference lines from tellurium spectroscopy which are relevant for barium and other atomic transitions close to 455 nm.
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Two-Photon Ionization of the Calcium 4S3D 1D2 Level in an Optical Dipole Trap
This thesis reports an optical dipole trap for atomic calcium. The dipole trap is loaded from a magneto-optical trap (MOT) of calcium atoms cooled near the Doppler limit (~1 mK). The dipole trap is formed by a large-frame argon ion laser focused to 20 microns into the center of the MOT. This laser …
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A sensor for combustion thermometry based on blue diode lasers.
… out in laminar flames both by the two-line atomic fluorescence technique, and also by a novel line-shape thermometry method that requires the use of only a single diode laser. The first part of this work involved the development of blue extended cavity diode lasers with favourable tuning …