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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 390 for “"electron density"”.
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Computer display of protein electron density functions.
Massachusetts Institute of Technology. Dept. of Electrical Engineering. Thesis. 1967. M.S.
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Topside ionosphere electron density concentration: observation and theory.
Thesis (Ph D.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1970.
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Plasma Electron Density Measurement Using Homodyne and Heterodyne Interferometers
Measurement of the electron density in a plasma using interferometry. Two different interferometer designs, homodyne and heterodyne are studied in two fusion reactor systems namely Tokamak and flow through Z-pinch device.
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High-latitude electron density observations from the IMAGE radio plasma imager
Before the IMAGE mission, electron densities in the high latitude, high altitude region of the magnetosphere were measured exclusively by in situ means. The Radio Plasma Imager instrument onboard IMAGE is capable of remotely observing electron densities between 0.01 and 100,000 e-/cm-3 from …
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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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Microwave Interferometric Measurements of Electron Density in Laser-Generated Plasma Channels
… of the temporal decay of the absolute electron density in a laser-produced plasma channel have been made with a 9.2~Ghz microwave interferometer. The plasma channels were generated by sub-picosecond laser pulses ($\lambda=$248~nm, 40~mJ per pulse) produced by a hybrid Ti:sapphire/KrF …
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Stabilization of electron-scale turbulence by electron density gradient in NSTX
… exceed neoclassical theory predictions. In NSTX, electron thermal transport is found to dominate energy loss. Theory and experiments have shown that electron temperature gradient (ETG) turbulence on the electron gyro-scale, kḻpe </~ 1, can be responsible for anomalous electron thermal transport in …
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Electron density and average electron energy in the D.C. glow discharge
Thesis (B.S.) Massachusetts Institute of Technology. Dept. of Physics, 1951.
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Electron density variation with incident power in a steady state microwave discharge.
Massachusetts Institute of Technology. Dept. of Physics. Thesis. 1968. B.S.
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Understanding the Mechanisms that Determine the Edge Electron Density Profile in Tokamaks
… is responsible for the build up of edge density gradients. To this end, this thesis combines electron and neutral measurements across the edge region with high-fidelity simulations of neutrals to study these processes in high density and high magnetic field plasmas on Alcator C-Mod. This …
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The electron density : a bridge between exact quantum mechanics and fuzzy chemical concepts
… The valence concept distinguishes between electrons, which do not participate in chemical interactions (core electrons) and those, which do (single, double, triple bonds, lone-pair electrons, etc.). Additionally, individual electrons are assigned to atomic centers. The valence concept is of …
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The effects of moving electron density fluctuations on time domain reflectometry in plasmas
The effects of time-dependent electron density fluctuations on a synthesized time domain reflectometry response of a one-dimensional cold plasma sheath are considered. Numerical solutions of the Helmholtz wave equation, which describes the electric field of a normally incident plane wave in a …
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Spectroscopic Measurements of Magnetic Field and Electron Density on Wire Array and Laser Plasmas
Magnetic 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 …
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Measurement of Electron Density and Temperature in Silicon Microplasma Devices by Optical Emission Spectroscopy
Made available in DSpace on 2017-07-06T18:55:09Z (GMT). No. of bitstreams: 3 Li_Benben_MS.pdf: 998567 bytes, checksum: 7f27365b2d81cd9fa40c84426158d789 (MD5) Li_Benben_MS_ABS.pdf: 11136 bytes, checksum: 1c9a21b27d87b6b38a303fecf27b5f2e (MD5) license.txt: 4813 bytes, checksum: …
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Measurement of the Electron Density and the Attachment Rate Coefficient in Silane/helium Discharges
The electron density in helium and silane/helium glow discharge plasmas was measured in a hollow cathode discharge using microwave diagnostic techniques. When silane is added to the discharge gas, the electron density is drastically reduced, which is attributed to dissociative attachment to a …
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Measurement of the Electron Radiation Temperature and Electron Density in Parallel Plate Radio Frequency Discharges
… used to measure the radiation temperature and electron density in parallel plate capacitively coupled radio frequency (2.5 MHz) discharges. Evidence is presented for the existence and importance of an energetic electron beam, produced by the large cathode sheath voltage, which sustains and …
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Ionospheric electron density and Te/Ti estimation using incoherent scatter power data collected at ALTAIR
Submitted by Sarah Shreeves (sshreeve@illinois.edu) on 2013-11-19T22:31:10Z No. of bitstreams: 1 Milla_MarcoAntonio.pdf: 18996259 bytes, checksum: 864d8de80d90f1c6931b555e81258644 (MD5)
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Crystal structure, electron density and chemical bonding in inorganic compounds studied by the Electric Field Gradient
… calculations, which are based on the concept of density functional theory (DFT). In order to test the reliability of a band structure calculation, its results have to be compared with experiments. Since the electron density, the main constituent of DFT codes, cannot be directly determined …
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