Browsing Electronic Theses and Dissertations by Department "Physics"
Now showing items 161-180 of 200
-
(2010-06-08)Department: PhysicsSecond harmonic generation (SHG) has been utilized as a sensitive and non-invasive optical tool to investigate the interface in Si/SiO2 systems. This dissertation encompasses two major topics: 1) Polarization-dependent SHG ...
-
(2018-11-27)Department: PhysicsActive regions on the Sun are abundant with a variety of waves that are both acoustically helioseismic and magnetohydrodynamic in nature. The occurrence of a solar flare can disrupt these waves, by excitation of these waves ...
-
(2008-12-22)Department: PhysicsWe have studied the source dynamics of the matter in ultra relativistic $Au+Au$ collisions at $sqrt{s_{N N}} = $200 GeV by analyzing the production of the simplest nuclei: deuterons and anti-deuterons. In relativistic ...
-
(2013-11-14)Department: PhysicsNuclear magnetic resonance (NMR) harnesses the sensitive dependence of nuclear spin dynamics to detect molecular structure and interaction with environments. At ambient temperature and 3 Tesla field, the signal acquired ...
-
(2017-08-24)Department: PhysicsThe Stochastic Variational Method using Explicitly Correlated Gaussians was employed for calculating the energies of systems consisting of few bosons, with gravitational, coulombic, soft-core Gaussian interactions and ...
-
(2014-12-08)Department: PhysicsTwo dimensional materials are atomically or molecularly thin materials that extend macroscopically. By mechanically probing these two dimensional materials the mechanical, thermal, and optical nature of these materials are ...
-
(2023-11-22)Department: PhysicsNanostructures and quantum emitters in optical cavities are examined using novel light-matter coupling approaches. Treating light and matter on equal first-principles footing has not be necessary to advance the fields of ...
-
(2015-04-03)Department: PhysicsThis dissertation is a compilation of 1) the experiments measuring the energy and coincidences up to four fold with time gates of gamma rays from fragments produced in 252Cf spontaneous fission obtained with Gammasphere ...
-
(2008-07-18)Department: PhysicsIn this thesis, we report our work on temperature dependence of second harmonic generation in Si/SiO2, which has led to an enhanced understanding of the physical processes associated with creation of the photo-induced ...
-
(2009-02-03)Department: PhysicsPolymer gel dosimeters are three-dimensional radiation-sensitive materials comprised of monomers and other chemicals distributed in an aqueous gelatin matrix. Upon irradiation by high energy X or gamma rays, free radicals ...
-
(2022-07-29)Department: PhysicsMeasurements of jet substructure in ultra-relativistic heavy ion collisions suggest that the jet showering process is modified by the interaction with quark gluon plasma. Modifications of the hard substructure of jets can ...
-
(2008-04-25)Department: PhysicsThe dissertation is based on the investigation of the spontaneous fission of 252Cf experiment with the Gammasphere array. Prompt triple gamma coincidence data were analyzed to identify new transitions and states in ...
-
(2013-07-15)Department: PhysicsElectrophoretic deposition (EPD) is introduced in a new light: as a process for the fabrication nanoparticle monolayers (NPMs).Using EPD, NPMs are fabricated from a variety of different types of NPs such as iron oxide, ...
-
(2015-03-24)Department: PhysicsWhen two galaxies coalesce, the supermassive black holes (SMBHs) at each galaxy center will also coalesce. In spherical galaxies, there are not enough stars with centrophilic orbits to interact with the black hole binary ...
-
(2014-10-28)Department: PhysicsWe conducted an updated global analysis of neutrino oscillation data using alternative bounds on the mixing angle theta-13 to determine the best fit mixing angles theta-13 and theta-23, the mass- squared difference ∆m_32^2, ...
-
(2010-04-15)Department: PhysicsComparisons between empirical data and theoretical stellar evolutionary models indicate large systematic errors in the stellar ages resulting from different age-dating techniques. Nevertheless, these chronometric tools ...
-
(2015-07-22)Department: PhysicsThis work aims to quantify the changing clustering of satellite galaxies in their host dark matter halo. I use three samples of Sloan Digital Sky Survey (SDSS) galaxies; the first sample is of galaxies in the local universe, ...
-
(2009-04-14)Department: PhysicsThe topic of this thesis is the design, implementation and performance of the PHENIX Time-of-Flight West (TOFW) subsystem, a high transverse momentum (pT ) particle identification (PID) detector based on Multi-Gap Resistive ...
-
(2009-04-22)Department: PhysicsThis thesis summarizes the research I have done during my graduate tenure at Vanderbilt University. The core of the thesis is a model of glueballs as tightly knotted or linked chromoelectric flux tubes. The model is based ...
-
(2015-12-28)Department: PhysicsThe advent of short intense laser fields promises unprecedented quantum control over chemical reactions. Laser fields of femtosecond duration are now readily available on the tabletop. In this dissertation we investigate ...