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 304 for “"energy loss"”.
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Finite kinematics in radiative energy loss
… to those implemented in sophisticated QCD-based energy loss models, but that the exact large-x kinematics in the toy theory are more complicated than those implemented in those same QCD-based energy loss models. We compute the differential cross-section for various values of the parent parton …
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Developing energy-loss test techniques for large buildings.
… on the country's current output. Building energy use currently accounts for 46% of total UK energy consumption, resulting in the annual release of 66 million tonnes of carbon into the atmosphere.As one step in addressing this issue the Government introduced the Approved Document Part L2 of …
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Electron energy loss spectroscopy of transition-metal carbides
Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-13T14:57:08Z No. of bitstreams: 1 1983_allison.pdf: 3824629 bytes, checksum: c0a995c7c2bcca1cad4a44e6d628a004 (MD5)
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Electron Energy Loss Spectroscopy and Optical Properties of Plasmonic Nanostructure
… nanostructure’s plasmonic properties. Electron energy loss spectroscopy (EELS) is one of these tools, which is helpful for us to understand the interaction between fast moving electrons and nanomaterials. It could achieve very high spatial and energy resolution. Here, we develop a new …
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Energy loss and theoretical uncertainties in small quark-gluon plasmas
… this thesis is to systematically improve current energy loss models, particularly in how they pertain to small systems. We present a perturbative Quantum Chromodynamics (pQCD) based energy loss model which receives small system size corrections to both the radiative and elastic energy loss, and …
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pQCD energy loss and thermal field theory in small systems
… QGP signatures in small systems is the partonic energy loss. However, current theoretical descriptions of partonic energy loss are ill-adapted to small systems. This thesis first presents a numerical analysis of an analytical small system extension of a standard energy loss formula, and finds …
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Applications of computer algebra to the theory of electron energy loss
… interface plasmons and for the angle-resolved energy-loss function. The energyloss spectrum is then obtained by integrating over wavevectors. The formulas we have derived are applied to real materials such as Al/Mg, Al/Al<sub>2</sub>O<sub>3</sub>, Al/SiO<sub>2</sub>/Si, diamond and graphite.
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Mapping plasmon excitations in gold nanostructures using electron energy loss spectroscopy
… transmission electron microscopy with electron energy loss spectroscopy is the the experimental technique used throughout this thesis and we provide an overview of this method in Chapter 2, detailing some of the optimisation process and data analysis used in this thesis. <br/><br/>In Chapter 3 …
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Energy loss and equilibration of a highly energetic parton in QCD plasmas
… or quark) traverses the medium, it loses its energy as a result of interactions with the medium. In this thesis, we describe the full in-medium kinetic and chemical equilibration of hard particles, using a linearized effective kinetic description of QCD at leading order. Since we include …
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Collective excitations in layered materials with momentum-resolved electron energy loss spectroscopy
… dielectric function). The measurement of the energy- and momentum-resolved chi(q,w) over a large phase space of q and w, however, presents a significant experimental challenge. Traditional methods to measure chi(q,w) have suffered from either one or more major drawbacks. To address this …
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Applications of electron energy loss spectroscopies to the study of surface chemistry
Two different kinds of electron energy loss spectroscopies have been used in this thesis to the study of surface chemistry. In the first part of the thesis which includes the first four chapters, Extended Electron Energy Loss Fine Structure (EXELFS) has been used to study the bonding of (1) oxygen …
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A study of oxide superconductors by electron energy loss spectroscopy in STEM.
… the nanometre spatial resolution with electron energy loss spectroscopy (EELS), which allows accurate observation of light elements such as oxygen, gives the opportunity to observe fluctuations in stoichiometry to -2%. The oxygen Kabsorption edge has previously been shown to have a pre-edge …
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Numerical Study of Energy Loss Mechanisms in Oscillating Underwater Explosion (UNDEX) Bubbles
… that is known to be due to neglected secondary energy-loss mechanisms is evaluated. A single secondary energy-loss mechanism is established as the most significant loss mechanism that is being disregarded in current hydrocodes. The leading secondary energy-loss mechanism is formulated into a …
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Short path length pQCD corrections to energy loss in the quark gluon plasma
… minuscule systems. We study the way in which energy is dissipated in the QGP created in pA collisions by calculating, in pQCD, the short separation distance corrections to the well-known DGLV energy loss formulae that have produced excellent predictions for AA collisions. We find that, …
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Energy loss to the soil surrounding a below-grade solar energy storage pond
… have been proposed for storing collected solar energy. A study was undertaken to investigate energy losses to the soil surrounding a below grade solar energy storage pond. A three dimensional finite element model was developed to approximate the solution of the differential equation of heat …
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Fusion-Product Energy Loss in Inertial Confinement Fusion Plasmas With Applications to Target Burns
… to magnetic fusion in the drive towards energy production, but lags behind partly because of the limited knowledge of high-density plasmas. One area of uncertainty is the energy-loss rate of fusion products. This is due in part to the unique plasma parameters encountered in these plasmas …
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Electronic collective modes in two dilute conductors with momentum-resolved electron energy-loss spectroscopy
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-04-06 without embargo terms
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Characterization of collective phenomena in cuprate superconductors by momentum-resolved electron energy loss spectroscopy
… technique, momentum-resolved electron energy loss spectroscopy (M-EELS). As a part of this development, we derived the theoretical framework for describing the scattering cross section in terms of the imaginary part of the dynamic susceptibility, χ''(q,ω), and implemented the software …
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A moment-preserving single-event Monte Carlo model of electron and positron energy-loss straggling
Analog simulation of energy straggling of electrons and positrons is computationally impractical because of long-range Coulomb forces resulting in highly peaked cross sections about small energy-losses and extremely small collision mean free paths. The resulting transport process is dominated by …
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