Browsing Physics and Astronomy by Title
Now showing items 10-29 of 42
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Effects of Ultrathin Interlayers on Thermal Boundary Conductance at Metal-Dielectric Interfaces
(2019-11-22)Heat transport in micro- and nano-scale materials have an increasingly important role in thermal management of numerous technologies such as thermoelectric energy conversion, microelectronics, and plasmonic devices. ... -
Efficient Detection of Cloud Scenes by a Space-Orbiting Argus 1000 Micro-Spectrometer
(2018-03-01)The description, interpretation and imagery of clouds using remote sensing datasets collected by Earth-orbiting satellites have become a great debate spanning several decades. Presently, many models for cloud detection and ... -
Electron Removal Processes in Proton-Methane Collisions
(2015-08-28)We have conducted a quantum-mechanical analysis within the independent elec- tron model to investigate electron removal processes in the proton-methane collision system in the 20 keV to a few MeV energy range. Similar ... -
Estimating the Altitudes of Clouds at the Mars Science Laboratory Landing Site
(2019-03-05)Using the Navigation Camera, the Mars Science Laboratory (Curiosity) Rover images the atmosphere to capture clouds. A Zenith Movie (ZM) consists of eight upward-pointing images taken over five minutes. The angular distance ... -
Evaluating the Top-down Emission Rate Retrieval Algorithm (TERRA) Using Virtual Aircraft-based Sampling Within the GEM-MACH Model
(2018-05-28)Between August 13th and September 7th of 2013, aircraft-based measurements of air pollutants were collected in support of the Joint Canada-Alberta Implementation Plan on Oil Sands Monitoring (JOSM). The Top-down Emission ... -
Higgs and Heavy Meson Lattice Spectroscopy
(2016-09-20)Lattice simulations are a first principles method of numerically studying the spectrum of bound states. In quantum chromodynamics (QCD), lattice simulations have had tremendous success in accurately calculating the hadron ... -
Impact of Saharan Dust Aerosols on Radiation and Clouds Over the Tropical East Atlantic Ocean
(2018-03-01)Aerosols affect the atmospheric processes by interacting with shortwave (SW) and longwave (LW) radiations and also by modifying the cloud microphysics (direct and indirect effects respectively). This study investigates the ... -
Investigation into the Spatial Distribution of AGN Companion Galaxies in Gravitationally Isolated Environments
(2018-11-21)Active galaxies are an important subclass of galaxies, distinguished by an energetic core driven by enhanced accretion onto a central supermassive black hole. However, this accretion mechanism inevitably opens up a problem: ... -
Investigation of Anisotropic Heat Transport Through Frequency Domain Thermoreflectance Technique
(2019-11-22)Thermophysical properties of thin film materials are of great importance for thermal management in devices including transistors, lasers, sensors, and plasmonic structures. In this thesis, I examine the characterization ... -
Ion-Atom Collisions: A Time-Dependent Density-Functional-Theory Perspective
(2018-05-28)Time-dependent density functional theory (TDDFT) is an alternate formulation of time-dependent N-body quantum mechanics which allows one to describe a system via the single-particle density, n, rather than the full N-body ... -
Ionization of Helium in a Non Coplanar Geometry
(2016-11-25)The purpose of this work is to calculate the scattering behavior of a non-coplanar ionization collision of an electron with a helium atom. Relativistic distorted waves were used to describe the wave functions of the incident ... -
Ionization of the Hydrogen Molecular Ion by Strong Infrared Laser Fields
(2015-01-26)The ionization of simple molecular targets, such as molecular hydrogen, or even the molecular hydrogen ion ($\mbox{H}^{+}_{2}$) by strong laser fields has become the focus of experimental research in the past few decades. ... -
Laboratory Studies of Surface-Atmosphere Water Exchange Processes on Mars
(2019-03-05)The recent discoveries of highly deliquescent perchlorate salts and strongly adsorbing porous minerals on the surface of Mars are intriguing as liquid brine solutions and adsorbed water could potentially provide a habitable ... -
Lidar Measurements of Pollution Above the Canadian Oil Sands
(2018-05-28)Aircraft based lidar measurements of atmospheric aerosol and ozone were conducted to study air pollution from the oil sands extraction industry in northern Alberta. Significant amounts of aerosol were observed in the ... -
Measurement of Pion-Carbon Cross Sections at DUET and Measurement of Neutrino Oscillation Parameters at the T2K Experiment
(2018-08-27)The Tokai-to-Kamioka (T2K) experiment is a long baseline neutrino oscillation experiment. An intense muon neutrino (or antineutrino) beam is produced at the Japan Proton Accelerator Research Complex (J-PARC) by protons ... -
Modified Gravity and Cosmology on the Largest Scales
(2018-03-01)This dissertation presents a series of my contributions to research in theoretical cosmology, focusing on aspects of the very large scale universe, particularly dark energy, cosmic acceleration, modified gravity, and cosmic ... -
Monitoring Broad Absorption-Line Quasar Variability
(2016-09-20)Winds generated by an accreting super massive black hole may provide feedback to the host galaxy and offer an explanation for the co-evolution of galaxies with their super massive black holes that has been reported in the ... -
Multiscale Modelling of Molecules and Continuum Mechanics Using Bridging Scale Method
(2016-11-25)his PhD dissertation is about developing a multiscale methodology for coupling two different time/length scales in order to improve properties of new space materials. Since the traditional continuum mechanics ... -
On the Role of Projectile Electrons in an Independent Electron Model Description of Dressed-Ion Impact on Atoms
(2016-11-25)The presence of electrons on ions which collide with neutral atoms constitutes a challenge to theoretical descriptions of the collision dynamics. These collisions pose quantum-mechanical many-body problems that cannot be ... -
Photometric Calibrations of Metallicity and Temperature For M Dwarfs
(2015-08-28)Based on a carefully collected sample of dwarf stars, a new empirical photometric calibration to estimate the metallicity of late-type K and early-to-mid-type M dwarfs is presented. The calibration sample has two parts; ...