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 17 of 17 for “"electron spectrometer"”.
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Data acquisition system for an electron spectrometer, A
Includes bibliographical references.
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Set up of a short magnetic lens electron spectrometer and investigation of cesium-137 and thulium-170 decay.
… on the set up of a short magnetic lens electron spectrometer, and the results of an investigation of the beta decay spectra of Cs137 and Tm170. A short magnetic lens electron spectrometer of about 21cm focal length was set up and used during the course of this investigation. A Cs137 …
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Design of the electron spectrometer for the HUNTER experiment and timescale of electron thermalization in liquid Argon for directional detection of WIMP dark matter
… the reconstruction of the missing neutrino mass.Electrons produced in the decay are guided towards their detector by an optimized set of electrodes paired to a magnetic field to confine their trajectories into spirals. A magnetic shield protects the electron from external stray fields that could …
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Using the method of moments and Robin Hood method to solve electromagnetic scattering problems
… to ensure that no Penning traps occur in the electron spectrometer.
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Measurement of fLT and fLT' response functions in the quasi-elastic ²H(e̳,e'p) reaction at 200 (MeV/c) missing momentum
… was carried out with a 40% polarized, 800 MeV electron beam. The measurement took place in the Bates South Hall using the One Hundred Inch Proton Spectrometer(OHIPS) as the electron spectrometer. It was placed at an angle of 37.270 and the energy transfer, w, was set for quasi-elastic …
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Electron Generations and Transportation in Fast Ignition Experiments
… the generation and transportation of hot electron in fast ignition experiments. A brief review of the background and the theory of inertial confinement fusion process are discussed. This thesis explains different schemes of fast ignition alongside the various relevant electron energy …
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Thin Films for the Transport of Polarized Ultracold Neutrons for Fundamental Symmetry Study
… spin and the direction of emission of the electron in polarized neutron decay (the ``A'' asymmetry). The UCNA experiment makes use of the spallation-driven solid deuterium (SD2) UCN source at the Los Alamos Neutron Science Center (LANSCE). The UCN leave the source and are 100% polarized by …
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The HUNTER Experiment: A precision massive-neutrino search based on a laser-cooled atomic source
… measurements. The HUNTER experiment studies the electron capture decay of laser-cooled, magneto-optically trapped 131-Cs. During decay, 131-Cs produces a 131-Xe ion, X-ray, Auger electrons, and a neutrino. Assuming the 131-Cs was initially at rest, the momenta of all decay products, except the …
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Spectroscopic studies of field-induced electron emission from isolated microstructures
… has been undertaken into the field induced electron emission (FIEE) mechanism that occurs at microscopically localised `sites' on uncoated and dielectric coated metallic electrodes. These processes have been investigated using two dedicated experimental systems that were developed for this …
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Towards a free-electron laser driven by a laser wakefield accelerator
The free-electron laser (FEL) is a powerful source of tuneable coherent radiation that currently demands kilometre-scale beam lines for high-energy vacuum ultraviolet (VUV) and X-ray output. Driving an FEL with a laser wakefield accelerator (LWFA) electron beam would radically reduce the size of …
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Fracture of Hot-Pressed Silicon Nitride at Elevated Temperatures
… for each displacement rate. The scanning electron microscope, transmission electron microscope and scanning Auger electron spectrometer were used to analyze as-received and fractured material. Fracture stress and critical stress intensity factor showed a strain rate dependence above …
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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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The O+ 1 -> O+ g monopole transition in 112Cd
… electromagnetic deexcitation process by which an electron is emitted from an atomic elec¬tron shell. This process competes with the emission of gam¬ma-rays from the nucleus- Recently a mini-orange electron spectrometer, for the recording of internal electron spectra, was designed and built at the …
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Study of the ¹²C(e,e'p) reaction in a correlations dominant regime with Q² = 2.0 (GeV/c)² and XB̳ > 1
… Jefferson Lab using the pair of high resolution spectrometers to detect the (e, e'p) reaction data, and using a third large acceptance spectrometer called BigBite to detect the second nucleon ejected from the nucleus. The kinematics were chosen to be conducive for studying short-range …
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Measurement of fifth structure function in deuterium
… inauguration of the newly developed Out-Of-Plane Spectrometer (OOPS). The observation of fb1 requires longitudinally polarized electron beams and out-of-plane detection. This structure function is directly related to the imaginary part of the interference between the transverse and longitudinal …
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Charged Particle Optics Simulations and Optimizations for Miniature Mass and Energy Spectrometers
… applications shown are mass spectrographs and electron energy spectrographs. Simulation allowed additional information about the systems in question to be determined.In this work, coded apertures are shown to be compatible with sector instruments, though architectural challenges exist. Next, …
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Increased Proton Energies - Above the ~ 60 MeV Empirical Barrier, from High-Contrast High-Intensity Short-Pulse Laser-Interactions with Micro-Cone Targets
… of various intense radiation sources, i.e. electrons, X-rays, and ions. Of particular interest to this dissertation is the production of ion beams from solid targets. These ion beams are directly linked to the hot-electron production and transport inside the solid target (as simple as a …