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 130 for “"electron temperature"”.
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Electron Temperature Dependence of the Recombination Coefficient in Pure Helium
Made available in DSpace on 2014-12-04T21:03:09Z (GMT). No. of bitstreams: 1 6000157.pdf: 4616288 bytes, checksum: f3d9c68b44bfc9af2a084b45802de167 (MD5) Previous issue date: 1959
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Response of Ionospheric Electron Density to a Change of Electron Temperature
Made available in DSpace on 2014-12-08T22:24:12Z (GMT). No. of bitstreams: 1 6711904.pdf: 3908847 bytes, checksum: 9372568c3ddcc4467a63d25027099049 (MD5) Previous issue date: 1967
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Investigation of electron temperature gradient driven micro-reconnecting modes in toroidal high-energy plasmas
… carried out with magnetically confined, high temperature plasmas have revealed important effects that have yet to be justified by existing theory. In particular, there arises an anomalous particle inflow in the central region of the plasma column. Experimental evidence suggests that this …
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Electron Temperature Enhancement Effects on Plasma Irregularities Associated with Charged Dust in the Earth's Mesosphere
… described by continuity and momentum equations, electrons whose behavior is determined from quasi-neutrality, and charged dust described by the standard Particle-In-Cell PIC method. The model has been used to investigate the temporal behavior of charged dust associated electron irregularities …
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Exploring evolution of multi-ion effects and electron temperature in ICF implosions at Omega and the NIF
… parameters for quantifying performance is temperature. In this thesis, effects related to temperature evolution of both the ions and electrons within the central plasma are explored in detail. From measurements of multiple ion temperatures in shock-driven ICF implosions, it is determined …
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An attampt to measure the electron temperature of a Xenon Chloride excimer laser discharge plasma by Thomson scattering
An electronic timing system was developed so that a commercial Nd:YAG regenerative amplifier could be triggered remotely with a BNC cable and pushbutton switch. This system was used to accurately time a Xenon Chloride transverse discharge laser to the short, high power Nd:YAG pulse to within 5 ns. …
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Studies of electron temperature fluctuations in the core of Alcator C-Mod plasmas via correlation electron cyclotron emission
… to turbulent fluctuations. New Correlation Electron Cyclotron Emission (CECE) experiments on Alcator C-Mod show lower levels of electron temperature fluctuations in the saturated ohmic confinement (SOC) regime than in the linear ohmic confinement (LOC) regime, however the lineaveraged …
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Study of electron temperature evolution during sawtoothing and pellet injection using thermal electron cyclotron emission in the Alcator C tokamak
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1986.
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Effects of vacancies and electron temperature on the electron phonon coupling in cubic silicon carbide and their connection to the inelastic thermal spike
<p>“The electron-phonon interaction is an important interaction in many solids as it influences transport phenomena and related quantities such as the electrical and thermal conductivities, especially in nuclear and space applications. The importance of the electron-phonon interaction in primary …
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Study of ergodic divertor edge density regimes on the tokamaks Tore Supra and TEXTOR, and sensitivity of tunnel probe electron temperature measurements to a suprathermal electron component
… of the TP to a small population of nonthermal electrons has been investigated in addition to the influence of suprathermal electrons on the scaling and structure of the Debye and the magnetic sheath at the inside of the tunnel probe.
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Computational design of a novel soft-Xray-based turbulence diagnostic in NSTX-U
… gain. However, there is a notable scarcity electron temperature fluctuation diagnostics, including for high density tokamak plasmas and in spherical tokamaks. The ultimate aim of our research is to develop a novel diagnostic tool for temperature fluctuations. Before experimental exploration, …
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Analysis of energy balance in a helicon coupled to an inertial electrostatic confinement device
… as an input into the zero dimensional model an electron temperature was obtained. With the electron temperature, collision and sheath/presheath properties can be determined. Finally entering the collision and presheath/sheath properties into a diffusion equation yields an ion flow rate that was …
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Theoretical Modeling of Radiation-driven Atomic Kinetics of a Neon Photoionized Plasma
… structure, radiation and transient effects, electron temperature and x-ray drive sensitivity and an idea for electron temperature extraction from a level population ratio. The neon atomic model considers several ionization stages of highly-charged neon ions as well as a detailed structure of …
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Performance testing and internal probe measurements of a high specific impulse Hall thruster
… voltages between 300-900V. Axial profiles of electron temperature, electron density, and plasma potential were measured and compared to results of a previously developed two dimensional particle-in-cell simulation of the BHT-1000 thruster. The experimental data matched the simulation results …
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Artificial heating of the lower ionosphere
… has approximately doubled the ambient electron temperature at an altitude of 80 km. Energy from the radio wave is deposited in the ionosphere as a result of collisions of the electrons with the neutral molecules. Cross-modulation experiments (performed elsewhere) have gained information …
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Nonlinear Evolution of Mirror Instability in the Earth's Magnetosheath in PIC Simulations
… in space plasma environments with proton temperature anisotropy of larger than one. The proton temperature anisotropy also drives the proton cyclotron instability which has larger linear growth rate than that of the mirror instability. Linear dispersion theory predicts that electron …
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Fundamental properties of a microwave induced argon plasma
… atom are determined. Values of ion density and electron temperature are derived from probe measurements. The former are compared with values of electron density derived from impedance measurements and it is shown that the condition of electrical neutrality is not valid in this plasma. Ion loss …
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A measurement system for and the measurement system of single particle energies in quantum dots
… system suitable for the measurement of single electron quantum dot devices. The inaugural measurement with this new system produced fascinating experimental data from a novel magnetic spectrometer device. This data, presented in chapter 5, suggests that it is possible to measure the single …
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Optical characterisation of a low temperature plasma jet
Low temperature plasma jets are of particular interest due to their unique way of producing reactive species even at room temperature and atmospheric pressure. They therefore have the potential to be used for various applications, in plasma medicine and surface modification in particular. The …
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