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 10 of 10 for “"Plasma radiation."”.
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Experimental and computational studies of electric thruster plasma radiation emission
… in thruster operations as well as diagnosing the plasma parameters. This study presents the spectral measurement results of three different electric thrusters and plasma sources. First, the BHT-200 Hall thruster emission spectra measurements are presented for varying discharge voltage and for …
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X-ray Radiative Signatures Influenced by Nonthermal Effects in High-Energy-Density Laboratory Plasmas of Mid-Atomic-Number Z-pinches
… investigation of high-energy-density (HED) plasma environments with broad application to atomic physics, astrophysics, and HED laboratory physics, including inertial confinement fusion (ICF), making it an inimitable tool for interdisciplinary science. Spectroscopic examination of plasma …
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Laser engine simulation using pressure based navier-stokes solver
… for the laser beam, beam power absorption, plasma radiation losses, and plasma thermophysical and optical properties. Equilibrium hydrogen is used as a flowing gas and its properties are calculated using the Hydrogen Properties Calculation (HPC) based on the the methods of statistical …
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A linear response analysis of electromagnetic radiation emanating from a plasma
"A many body analysis is made to determine the radiation (due to current fluctuations) that emanates from a high-density, low-temperature ""quantum"" plasma, and in the classical limit, for a low-density, high-temperature ""classical"" plasma. Radiation due to field fluctuations that are …
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Establishing a calibration for a microwave plasma continuous emissions monitor
… option to EPA Method 29, a Microwave Induced Plasma (MIP) system is under development for real-time atomic emission spectroscopy in stack exhaust. This MIP-CEM has a nebulizer calibration subsystem attached to the sample line for real-time span calibration of the monitored metal …
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Impurity transport studies on MAST
… is a subject of fundamental importance in plasma physics in general and in tokamak physics in particular. The behaviour of the various impurity species and the evolution of their concentration determines, among other things, the fuel dilution and the fusion reaction rate, the plasma …
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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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Arsenic speciation by ion-exchange chromatography with on- line determination by hydride generation: electronic modification of the D.C. plasma by photon counting
… was demonstrated. The instrument used was a d.c. plasma atomic emission spectrometer (OCP-AES). Complete recovery was reported for As(III), As(V), and DMAA while 86% recovery was reported for MMAA. Detection limits were determined, as arsenic for the species listed previously, to be 1.2, 0.8, 1.1, …
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Schemes of ion acceleration employing high energy, petawatt laser pulses
… normal sheath acceleration (TNSA) regime, namely radiation pressure acceleration (RPA) in the limits of thick (hole boring) and thin (light sail) target regimes.<br/><br/>In the first experiment, a target composed of a solid cryogenic hydrogen ribbon, 75- 100μm in thickness, was irradiated with …