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 10591 for “"electron"”.
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The Measurement of Electron Polarization by Electron-Electron Scattering
Made available in DSpace on 2015-05-12T17:12:21Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 6004007.PDF: 3035448 bytes, checksum: 750439948d351fbb73c82300a5a318a1 (MD5) Previous issue date: 1960
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Probing electron-electron and electron-phonon interactions in twisted bilayer graphene
… I present three experiments which explore electron-electron and electron-phonon interactions in SA-TBG. I first consider SA-TBG as a host for a viscous electron fluid and look for the onset of fluid behavior via electron transport. Then I investigate the temperature dependence of …
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Electron Beam Diagnostic at the ELBE Free Electron Laser
… the facility. ELBE is based on a superconducting electron linac. The linac consists of two accelerating modules and uses TESLA type nine-cell niobium cavities, two cavities in each module. The cavities were developed at DESY in the framework of the TESLA linear collider project and the X-ray free …
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Diffractive electron mirror for use in quantum electron microscopy
… gratings have long been used to coherently split electrons by means of electron diffraction for applications such as interferometry, holography and imaging. Due to their reliance on transmission through matter, however, these methods are prone to electron scattering and absorption and are …
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Low-Energy Electron-Photon Interactions in a Scanning Electron Microscope
The interaction of free-electrons with matter and light is among the most fundamental of processes in nature. From the use of free-electrons for atomic imaging, to their use in the generation of high-intensity, tunable light in synchrotrons, the physics of unconfined electrons has wide application. …
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Ultra-fast photon and electron beam diagnostics for free electron lasers
… optical pulses produced by infrared ffee-electron lasers (FELs) is an important task, not only for the further development of free electron lasers and their theory, but also for their operation as a research tool. The setting up and optimisation of the FEL requires effective and reliable …
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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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Measurement of electron-electron interactions in one dimension with tunnelling spectroscopy
… the measurement of the spectral function of electrons in surface-gate-defined quantum wires on a double-quantum-well, GaAs/AlGaAs device, and the comparison and fitting of the result to the non-linear theory. The spectral function is a theoretical concept frequently used in discussions on …
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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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A nanofabricated amplitude-division electron interferometer in a transmission electron microscope
Wavefront-division electron interferometry with the electron biprism has enabled many applications such as electron holography, exit-wave reconstruction, and demonstration of the Aharonov-Bohm effect. However, wavefront-division interferometry is limited by the requirement of high source coherence. …
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Towards nuclear excitation via electron capture in an electron beam ion trap
Nuclear Excitation via Electron Capture (NEEC) is the inverse process of internal electron conversion, where a free electron is captured into an atomic vacancy simultaneously exciting the nucleus to a higher-energy state. This process occurs naturally in hot astrophysical environments, and can …
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Theory and modeling of field electron emission from low-dimensional electron systems
… have succeeded in fabricating nanoscale field electron emitters in a variety of geometries and materials for use as electron sources in vacuum nanoelectronic devices, theory and modeling of field electron emission have not kept pace. Treatments of field emission which address individual …
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Electron Beam Parametric Converter
Made available in DSpace on 2014-12-08T22:23:31Z (GMT). No. of bitstreams: 1 6408454.pdf: 1581271 bytes, checksum: 6f245ec23fc737ea666a8cda127a5e78 (MD5) Previous issue date: 1964
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Minimizing electron optical aberrations
… reduction in high voltage ("""" 100 k V) electron optical instruments, especially used for lithography (SCALPEL) and high resolution electron microscopy (HREM). Since the invention by Berger and Gibson [1) in 1989, SCALPEL (SCattering with Angular Limitation in Projection Electron-Beam …
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Electron tomography of defects
Tomography of crystal defects in the electron microscope was rst attempted in 2005 by the author and colleagues. This thesis further develops the technique, using a variety of samples and methods. Use of a more optimised, commercial tomographic reconstruction program on the original GaN weakbeam …
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Magnetotransport in electron waveguides
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.
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Electron-deuteron elastic scattering
Massachusetts Institute of Technology. Dept. of Physics. Thesis. 1967. Ph.D.
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The thermo-electron engine
Thesis (Sc.D.) Massachusetts Institute of Technology. Dept. of Mechanical Engineering, 1956.
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