Browsing Department of Physics by Title
Now showing items 28-47 of 197
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Calibration Of The Atlas Intermediate Tile Calorimeter
(Physics, 2011-07-14)The Large Hadron Collider (LHC) at CERN near Geneva, Switzerland is the world's largest particle collider. UTA contributes to the ATLAS detector at the LHC. There are many detection systems within ATLAS, and the hadronic ... -
Can Silicon Carbide Nanotubes Be Effective Storage Medium For Hydrogen Storage?
(Physics, 2009-09-16)A systematic study of molecular hydrogen adsorption on three different atomic configurations of armchair SICNTs has been performed. In the first stage of our study, first principles calculations using both density functional ... -
CARDIAC SINGLE PHOTON EMISSION COMPUTED TOMOGRAPHY (SPECT) SIMULATION USING THE XCAT PHANTOM AND THE SIMIND PACKAGE
(2022-08-17)Clinical data indicates a prevalence of transmural perfusion defects in the apical, mid, and basal segment of the left ventricle (LV) wall in patients with coronary artery diseases (CAD). To administer therapeutic regimes ... -
Case Studies Of The Circular Restricted Three Body Problem
(Physics, 2007-08-23)In this thesis, the onset of instability for a planet which is part of a stellar binary system is investigated by running numerical simulations of the circular restricted three body problem. This study also makes use of a ... -
Catalogue of Computed Pseudo-Redshifts from BATSE GRB Data
(2020-06-08)We present a catalog of the redshift estimates and probability distributions for 565 individual Short-duration Gamma-Ray Bursts (SGRBs) detected by the Burst And Transient Source Experiment (BATSE). This result is based ... -
CHANDRA EJECTA KINEMATICS STUDIES AND AN ISO SPECTROSCOPIC SURVEY OF SUPERNOVA REMNANTS
(2022-08-15)The structure of metal-rich ejecta created from a supernova (SN) reveals vital information about the explosion of the progenitor star and the dynamical evolution of the supernova remnant (SNR). This research focuses on the ... -
CHARGE TRANSFER AND BUILT-IN FIELDS AT A SEMICONDUCTOR-CRYSTALLINE OXIDE INTERFACE: EFFECTS OF THE INTERFACE DIPOLE AND SURFACE TERMINATION
(2022-08-17)Charge transfer and built-in fields across semiconductor heterojunctions underpin the functionality of virtually all device technologies. In this regard, interfaces between insulating oxides and semiconductors have been ... -
CHIRALITY IN QUANTUM FIELD THEORY AND ITS ROLE IN THE STANDARD MODEL AND BEYOND
(2022-08-12)Chirality as a symmetry of particle physics occupies a unique role in the standard model. It arises from general space-time principles yet remains central to the formulation of local gauge theories. This work explores the ... -
Conditions For Wave Propagation Along Solar Magnetic Flux Tubes
(Physics, 2007-08-23)There is an intimate relation between all aspects of the solar activity and the presence of solar magnetic fields. Observations showed that the magnetic field at the photospheric level consists of magnetic flux tubes, which ... -
CORE-COLLAPSE SUPERNOVAE AND THEIR REMNANTS: CHANDRA STUDY OF SN 1987A AND A MULTI-WAVELENGTH FOLLOW-UP OF SN 2021KRF
(2023-08-08)**Please note that the full text is embargoed until 8/1/2024** ABSTRACT: Understanding how exploding stars impact their surroundings is of fundamental importance to all areas of astrophysics. Young supernovae (SNe) and ... -
Curie temperatures of annealed FePt nanoparticle systems
(American Institute of PhysicsDepartment of Physics, The University of Texas at Arlington, 2007-03-28)The chemically synthesized FexPt100-x nanoparticles with controlled compositions were annealed to transfer the disordered face-centered-cubic structure to the ordered structure. It was found that the L10 FePt structure can ... -
Cutoff Frequencies For Alfven Waves In The Solar Atmosphere
(Physics, 2014-12)Propagation of linear Alfven waves in the isothermal and non-isothermal solaratmosphere is investigated numerically and analytically. It is shown that thetwo wave variables, the velocity and magnetic field perturbations, ... -
Defect Studies In Cu-based P-type Transparent conducting Oxides
(Physics, 2012-07-25)Among other intrinsic open-volume defects, copper vacancy (VCu) has been theoretically identified as the major acceptor in p-type Cu-based semiconducting transparent oxides, which has potential as low-cost photovoltaic ... -
Derivation Of Generalized Lorenz Systems To Study The Onset Of Chaos In High Dimension
(Physics, 2007-08-23)This thesis provides a new method to derive high dimensional generalized Lorenz systems. Lorenz system is a celebrated nonlinear dynamical dissipative system which was originally derived by Lorenz to study chaos in weather ... -
DESIGNING REACTIVE OXYGEN SPECIES PRODUCING MATERIALS FOR CANCER AND WASTEWATER TREATMENTS
(2021-08-13)This dissertation is focused on using nanotechnology to improve conventional photodynamic therapy (PDT) and advanced oxidation processes (AOPs) for cancer and wastewater treatments, respectively. Even though PDT has a great ... -
DEVELOPMENT AND APPLICATIONS OF A MULTI-FUNCTIONAL POSITRON BEAM FOR SPECTROSCOPIES OF SURFACES AND INTERFACES
(2019-09-03)This dissertation describes the construction of a multi-functional positron beam and the methods employed for the analysis of digitized data produced by electron time-of-flight and gamma spectrometers. The positron beam ... -
Development And Characterization Of Gas Electron Multiplier Chambers For A Digital Hadron Calorimeter In The International Linear Collider
(Physics, 2009-09-16)Gas Electron Multiplier, or GEM, technology provides an attractive option for high precision jet energy measurements for future high energy physics experiments at the International Linear Collider. High voltage settings ... -
Do thermal fluctuations influence the recoil loops of nanocomposite magnets?
(American Institute of PhysicsDepartment of Physics, The University of Texas at Arlington, 2008-07-11)An exchange-coupled FePt/Fe3Pt nanocomposite system with well defined hard/soft two-phase morphology was prepared by reducing chemically synthesized FePt/Fe3O4 bimagnetic nanoparticles. It was interesting to observe that ... -
Effect of thermal fluctuations on the recoil loops of SmCo5[subscript]/Fe nanocomposite system
(American Institute of PhysicsDepartment of Physics, The University of Texas at Arlington, 2009-02-13)The correlation between the recoil loop openness and the activation volume has been studied for the SmCo5/α-Fe nanocomposite powder material prepared by mechanical alloying. The α-Fe phase content in the nanocomposite ...