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 13 of 13 for “"Department of Physics and Astronomy"”.
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Measurement of the double beta decay half-life of ^{100}Mo to the 0^{+}_{1} excited state, and ^{48}Ca to the ground state in the NEMO 3 experiment
… in the Fréjus tunnel which runs between France and Italy. If neutrinoless double beta decay is observed it will prove the neutrino is a Majorana particle and may potentially become the most sensitive method of measuring the absolute neutrino mass. It would also have huge implications for not …
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A microscopic model of signal transduction mechanisms: olfaction
… small molecule - receptor recognition processes, and thus signal transduction, is not fully understood to the highest level of scientifc explanation and prediction. One such example of this is olfaction. Molecules cannot necessarily be predicted from a smell, and similarly a smell from molecules. …
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The stability of short-period extrasolar giant planets
… This thesis contains an extensive description of the model and the methods adopted in modelling the different physical processes expected in the upper atmospheres and ionospheres of extrasolar giant planets. Modelling the upper atmosphere is important because the stability of the atmosphere …
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Atoms, ions and molecules in intense ultrafast laser fields
The dynamics of atoms and hydrogen molecules in ultrafast intense laser pulses are studied experimentally using time of flight mass spectroscopy and fast ion beam techniques. The content of the study can be split naturally into two parts; the first dealing with the interaction of noble gas atoms …
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Investigation of the interaction of water with the calcite {1014} surface using ab-initio simulation
… to explore the interaction between water and the {1014} surface of calcite. In addition a defective {1014} surface and stepped surfaces in contact with water were investigated. A series of percentage water coverages and water con�figurations were explored, including dissociated water …
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Tuneable graphite intercalates for hydrogen storage
The development of hydrogen as an energy transfer mechanism is of great importance to alleviate environmental damage and economic destabilisation caused by over-reliance on oil, as long as the hydrogen can be generated renewably. To be suitable for road transport applications, safe and compact …
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Fault tolerance issues in nanoelectronics
The astonishing success story of microelectronics cannot go on indefinitely. In fact, once devices reach the few-atom scale (nanoelectronics), transient quantum effects are expected to impair their behaviour. Fault tolerant techniques will then be required. The aim of this thesis is to investigate …
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Preparatory work for C 3 line-list calculation
The goal of this dissertation is to study the infrared absorption spectrum of the C 3 (carbon three) molecule. In particular, the aim is to investigate its ground electronic state up to 12:500 cm-1, as this affects the atmospheres of cool C-rich stars. The linear C 3 molecule shows very unusual …
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First multi-year muography of Etna Volcano
… discovered in 1936 by American physicists C. D. Anderson and S. Neddermeyer during their extensive cloud-chamber experiments at the California Institute of Technology for the purpose of studying the energy lost by cosmic rays in matter. From their results, they concluded that ``there exist …
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Geochronology of terraced coastal deposits in Calabria and eastern Sicily: tectonic implications
Calabrian Arc and Eastern Sicily (Southern Italy) are characterized by flights of coastal terraces occurring in various geological domains. These features are formed by interaction between the glacio-eustatic sea level changes and Late Quaternary uplift. Thus, by combining ages and elevations of …
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Electronic effects in radiation damage simulations in metals
… classical molecular dynamics, in which the role of the electrons is con�fined to describing bonding via the interatomic potential. This is generally sufficient for low radiation energies. However high energy atoms lose a signi�ficant proportion of their energy to electronic excitations, therefore …
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Local approach to quantum entanglement
… theory different from its classical counterpart and is also a valuable physical resource with massive potential for technological applications. However, our understanding of entanglement is still far from complete despite intense research activities. Like other physical resources, the first step …