Browsing Department of Physics by Title
Now showing items 158-177 of 197
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Selected Studies Of Celestial Dynamics And Habitability Of Extra Solar Planetary Systems
(Physics, 2013-03-20)Planetary science in various forms has become interwoven into human culture during all of known human history. The need and desire to expand our horizons has brought humans from basic forms of observation to the development ... -
Selected Studies Of Orbital Stability And Habitability In Star-planet Systems
(Physics, 2011-03-03)The study of planets remaining in orbit around one star with another starinterfering is an important topic of orbital mechanics and astrobiology. The onset of instability for a planet which is part of a stellar binary ... -
Self-Consistent Effects of the Recirculating Plasmapshere on the Development of Storm Time Dynamics in the Inner Magnetosphere.
(2023-06-07)The near Earth space environment is a highly coupled system. The Interplanetary Magnetic Field (IMF) interacts with the magnetosphere in myriad ways depend on the orientation of the IMF to the magnetosphere. The magnetic ... -
Semi-empirical Studies Of Solar Supergranulation And Related Phenomena
(Physics, 2008-09-17)In recent years, solar observations have moved from ground-based telescopes to observatories on Earth orbiting satellites, such as SOHO. They provide us with a clear and uninterrupted view of the solar disk. One instrument ... -
Sensitivity Study for Low Mass Dark Matter Search at DUNE
Many anomalies in the predictions of mass and gravity at the galactic scale have been attributed to an elusive form of matter we refer to as dark matter. The excessive rotational velocity of galaxies and gravitational ... -
Shape control of FePt nanocrystals
(American Institute of PhysicsDepartment of Physics, The University of Texas at Arlington, 2009-04-06): FePt nanocrystals were prepared by simultaneous reduction of platinum acetylacetonate and thermal decomposition of iron pentacarbonyl in properly chosen solvents/surfactants. A variety of FePt nanocrystals, including ... -
Silicon Carbide At Nanoscale: Finite Single-walled To "infinite" Multi-walled Tubes
(Physics, 2013-03-20)A systematic ab initio study of silicon carbide (SiC) nanostructures, especially finite single-walled, infinite double- and multi-walled nanotubes and nanocones is presented. Electronic and structural properties of all ... -
Silicon Carbide Nanotubes: Promises Beyond Carbon Nanotubes
(Physics, 2008-09-17)First-principles calculations for the electronic and geometric structures of three different types of armchair and zigzag silicon carbide nanotubes from (3, 3) to (11, 11) and (3, 0) to (11, 0) have been performed using ... -
Simulations Of High-latitude Ionosphere-magnetosphere region plasma density structures and the Alfvén waves effects
(Physics, 2009-09-16)O+ density structures in the polar cap ionosphere-magnetosphere region near 6000 km altitude have been observed with numerous spacecraft, with O+ densities ranging from above 10 cm-3 to lower than 0.01 cm-3. Regions with ... -
Spin Coupling By Conduction Electrons Explored By Double Time Green's Functions
(Physics, 2013-03-20)The impurities containing unfilled d or f shells may have localized magnetic moments in nonmagnetic metals, semiconductors, and superconductors under certain conditions. These localized moments interact with each other ... -
Strong Constraints on New Physics from the IceCube South Pole Neutrino Observatory
(2022-12-12)The IceCube Neutrino Observatory, a gigaton-scale ice Cherenkov detector located deep within the Antarctic glacier, has detected hundreds of thousands of atmospheric neutrinos at energies from a few GeV to 100 TeV. Above ... -
Structural phase transition and ferromagnetism in monodisperse 3 nm FePt particles
(American Institute of PhysicsDepartment of Physics, The University of Texas at Arlington, 2007-08-30)FePt nanoparticles with a size of 3 nm and thermally stable room-temperature ferromagnetism are investigated. The monodisperse nanoparticles were prepared by chemical synthesis and a salt-matrix annealing technique. ... -
Structural phase transition and ferromagnetism in monodisperse 3 nm FePt particles
(AIP, 2007)FePt nanoparticles with a size of 3 nm and thermally stable room-temperature ferromagnetism are investigated. The monodisperse nanoparticles were prepared by chemical synthesis and a salt-matrix annealing technique. ... -
STUDIES OF INFLUENCE OF ENERGY DISTRIBUTION ON THE UPPER ATMOSPHERE
(2015-11-30)The energy inputs into the upper atmosphere including both solar irradiation and geomagnetic energy can significantly change the upper atmosphere such as the neutral and plasma densities, velocities and temperatures. ... -
A Study Of Ejection Times Of Terrestrial Planets From The Habitable Zones Of The Solar Twins Hd 20782 And Hd 188015
(Physics, 2009-09-16)We provide a detailed statistical study of the ejection of Earth-mass planets from the habitable zones of the solar twins HD 20782 and HD 188015. These systems possess a giant planet that crosses into the stellar habitable ... -
Study Of Jet And Missing Transverse Energy Performance In Dijet Events With ATLAS Data
(Physics, 2012-04-11)The Large Hadron Collider(LHC) is the world's largest particle collider at CERN, Geneva, operating at a center of mass energy of 7 TeV . The Toroidal LHC Apparatus (ATLAS)is one of two general purpose detectors at the LHC. ... -
Study Of Oxide Surfaces Using Time Of Flight Positron Annihilation Induced Auger Electron Spectroscopy
(Physics, 2007-08-23)Transition metal oxides (TMOs) exhibit a rich collection of interesting and intriguing properties which can be used for wide variety of applications. In this dissertation, I will discuss the first PAES measurements on ... -
Study Of The Response Of The ATLAS Tile Calorimeter To Muons Produced In Sqrt(s) = 7 Tev Proton-proton Collisions At The LHC
(Physics, 2011-10-11)The purpose of this study is to verify the inter-calibration of the cells and uniformity of the Tile Calorimeter (TileCal) detector in the ATLAS experiment at CERN. The response using muons produced in proton-proton ... -
A Study Of The Viscous Interaction Between The Solar Wind And Earth's Magnetosphere Using An MHD Simulation
(Physics, 2012-07-25)The solar wind interacts with Earth's magnetosphere largely through magnetic reconnection and a “viscous-like” interaction that is not fully understood. The ionospheric cross-polar cap potential (ΦPC) component due to ... -
STUDYING THE OXYGEN EFFECT IN PROTON THERAPY VIA GPU-BASED MICROSCOPIC MONTE CARLO SIMULATION
(2020-08-10)Dissolved oxygen molecules are known to play an important role in radiotherapy. For example, tumor cells can be more radio-resistance under hypoxia than normoxia. There has been multiple hypothesis proposed to explain these ...