This thesis presents a systematic study on the characterising ultrafast dynamics of photo excited carriers in hydrogenated nano crystalline silicon (nc-Si:H) and porous silicon (PS) materials using the ultrafast optical pump probe spectroscopy approaches. The work involves the g…
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Granular materials display a host of fascinating behaviours both remarkably similar to and strikingly different from those exhibited by classical solids, liquids and gases. Due to the ubiquity of granular materials, and their far-reaching importance in multitudinous natural and …
Low frequency radio astronomy allows us to observe the fainter and older synchrotron emission from the relativistic plasma associated with active galactic nuclei (AGN) in galaxies and clusters. In this thesis, we use the Giant Metrewave Radio Telescope to explore the impact that…
In the past decade the field of extra-solar planetary science has moved beyond simple detections of planets outside of our Solar System into more detailed characterisations of these objects. One avenue that is at the forefront of current research is the study of extra-solar plan…
A room temperature liquid scintillator time projection chamber has the potential to give both ne grained tracking and calorimetry, analogous to liquid argon, only without the cryogenic infrastructure. This type of detector would be invaluable as a cost effective, large volume de…
The research described in this thesis is directed at advancing the state of the practice of the non-destructive gamma-ray assay of nuclear waste containers. A number of potentially accuracy-limiting issues were identified and addressed, resulting in new developments which were i…
Jets have been studied in high energy heavy ion collisions by measuring the angular correlation between particles at high transverse momentum. Differences in the yield and shape of the angular correlations as a function of system size give information on the medium produced in t…
This thesis is concerned with momentum anisotropy in strongly correlated electron systems, and explores its origin and its consequences through two contrasting projects. The first is a study of the temperature dependences of magnetotransport quantities in the normal state of the…
This thesis concerns the analysis of continuous gravitational waves from neutron stars with non-axisymmetric rotational motion using data from ground-based interferometric gravitational wave detectors, the development of a computationally efficient algorithm for analysis of this…
Aircraft propellers in any flight condition other than pure axial flight are subject to an incident flowfield that gives rise to time-varying forces. Means of modelling these time-dependent forces have been presented in the literature, to varying degrees of success but a review …
The identification of high transverse momentum top quarks is an essential ingredient of many searches for new physics. This thesis presents, for the first time, the performance of shower deconstruction, a new top-tagging algorithm, using data collected with the ATLAS detector at…
In this work we examine the dynamics of one-dimensional systems. We present a continuum approach to the construction of the non-equilibrium Keldysh functional integral and derive a relation between the classical and quantum fields of the Keldysh formalism and the occupation of a…
Turbulent transport in magnetized plasmas is one of the fundamental issues in fusion plasma physics. It is recognized that the interactions between zonal flows(ZFs) and micro-scale drift wave turbulence can influence plasma transport in both Tokamaks and Stellarators. These inte…
The basic building blocks of all biomembranes are lipid molecules, which self-assemble to form a very thin and stable barrier, where a variety of proteins can be incorporated into its structure. These two-dimensional systems exhibit a plethora of physical phenomena, which are an…
Imaging systems play a crucial role in shaping understanding of our surroundings. Modern imaging systems enable the acquisition of images of objects at length-scales and resolutions previously deemed impossible. However, as the drive for better images and novel applications incr…
LHCb is the dedicated heavy flavour experiment on the LHC accelerator ring. An analysis measuring the relative branching fractions of Lc->phh decays is presented using 1 inverse femtobarn of proton - proton collisions gathered by LHCb during 2011. Independent measurements are ma…
Structured photonic materials are typically composed of periodic subwavelength elements where the unit cell geometries can impact the overall optical characteristics of the bulk material. By using micro and nanofabrication technologies it is possible to engineer the electromagne…
With the development of more and more elegant and sensitive interferometric gravitational wave detectors, we are expecting the first direct detection of gravitational waves in a short time. This triggers huge interest to develop more powerful tools to perform data analysis on th…
Developments in the field of optical sensing have seen the creation of a wide variety of new structures and materials. These include metamaterial sensors, which comprise of nanostructures with physical dimensions smaller than the wavelength of light. Two of the most widely resea…