This work has studied the particle composition of jets by determining the ratios p±/π± and K±/π± in Au + Au and d + Au collisions at √sNN = 200 GeV measured by the STAR experiment at RHIC. Jets were found by measuring the angular azimuthal correlation between particles at high t…
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Determining a scattering medium's absorption and scattering coefficients from measurements of the light reflected or transmitted from the medium is a common problem in various fields. The aim of this thesis was to calculate the errors in the determined coefficients using differe…
Dilute nitride alloys of III–V semiconductors, and transparent conducting group-II oxides may both be categorised as highly mismatched compounds. The small size and high values of electronegativity of nitrogen and oxygen (see figure), compared to the substituted anion, in dilute…
Domain walls may be treated as single entities that can be used to convey bits of information in potential magnetic memory devices such as magnetic logic and racetrack memory, which use controlled domain wall movement in complex magnetic nanowire networks. Greater understanding …
A statistical combination of the low mass search channels for the Standard Model (SM) Higgs boson at the ATLAS Experiment is presented. It is found that with 1 inverse femtobarn of ATLAS data, the SM Higgs can be excluded between 130 GeV and 190 GeV, at or above the 95% Confiden…
That neutrinos have mass and mix is now well established experimentally. Measurements of the properties of neutrinos from both natural and man-made sources have measured the large mixing angles and mass squared differences. In order to fully understand the nature of the neutrino…
Measurements are made on superconducting Niobium on Sapphire and oxidized Silicon microwave coplanar resonators for quantum bit experiments. Device geometry and materials are investigated and quality factors in excess of a million have been observed. The resonant frequency as a …
A commercial Ion Mobility Spectrometer that is designed to detect Chemical Warfare Agents (CWAs), is modified by the addition of a second ion gate, and connected to a commercial Ion Trap Mass Spectrometer (ITMS). The addition of the second gate allows selection of individual ion…
The research presented in this thesis explores the prediction of noise propagation and radiation in turbofan engine intakes and bypass ducts, and the optimisation of noise attenuation by using acoustic liners. A commercial FE/IE code ACTRAN/TM is used within two shell programs; …
The main focus of this thesis is to search for low-frequency solar acoustic and gravity modes of oscillation of the Sun. Low-frequency modes are sensitive to the structure of the solar core and so provide stringent tests for models of the internal structure of the Sun. In this t…
Medium energy ion scattering (MEIS) has been used to investigate ultrathin epitaxial films. The depth profiles of V2O3(0001) films grown on Pd(111) were examined. The results from this demonstrated that on this substrate the films grown are highly non-uniform, with a large distr…
This thesis is based on the characterization of material properties of interest in rolled aluminium and steel sheet, both popular materials used across a wide-range of applications. The forming processes involved in producing rolled sheet metal depend on plastic deformation, ind…
Transient growth is quantitatively examined in two prototype separated flows using Direct Numerical Simulation (DNS). Separated flows typically exhibit regions of convective instability due to the inflectional velocity profiles inherent in the shear flow. This can lead to the tr…
This thesis describes the statistical measurement of vortex ring velocity elds. The measurements were conducted using high accuracy SPIV, with the measurement system traversing with the vortex ring. This incurred two sources of error: vibration led to the superposition of a fluc…
The thesis focuses on the analysis and determination of the structure of various metal doped phosphate glasses, which are of interest for their potential biomedical properties. The structures have been determined principally by X-ray and neutron diffraction but are also supporte…
Imagine a thin sheet that performs optical illusions on the scene behind it. For example, a window that appears to reverse depth and to image objects in front of the sheet, or alternatively swimming goggles that cancel the refraction of surrounding water. This thesis will explor…
Deeply Virtual Compton Scattering (DVCS) is the simplest interaction that allows access to Generalised Parton Distributions (GPDs), a theoretical framework describing nucleon structure. The strong interest in GPDs results from the fact that they can be used to determine the tota…
This thesis reports the use of a Ti:sapphire ultrafast laser with a confocal microscope to precisely induce DNA damage in the nuclei of live cells by multi-photon absorption, the development and comparison of foci counting algorithms for the quantitative assessment of radiation …