Browsing Physics by Title
Now showing items 131-150 of 291
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Laboratory-based Tender X-ray Emission Spectroscopy: Instrumental, Experimental, and Theoretical Advances and Application to the Study of Phosphorus and Sulfur Electronic Structure
Tender x-ray emission spectroscopy (XES) is a powerful, element-specific, atomically local probe of chemical and electronic structure. Taking advantage of advances in every component of spectrometer systems including ... -
Large Momentum Separation Matter Wave Interferometry
This work establishes a new benchmark for momentum separation in a matter wave interferometer with stable, visible fringes. With a path separation of 112 photon recoil momenta, our signal visibility of 30% and phase stability ... -
Laser Cooling and Trapping of 6Li: Experimental Tools for Many-Body Fermionic Dynamics and Ring Trap
This thesis delves into the laser cooling and trapping of 6Li, a fermionic atom, with the aimof creating experimental tools for the exploration of many-body fermionic dynamics in quantum degeneracy, specifically within ... -
A Likelihood Method for Determining the On-orbit Point-Spread Function of the Fermi Large-Area Telescope
(2012-09-13)The Large-Area Telescope (LAT) on the <italic>Fermi</italic> Gamma-Ray Space Telescope is a pair-conversion gamma-ray telescope with unprecedented capability to image astrophysical gamma-ray sources between 20 MeV and 300 ... -
Limiting CP violation through a search for a permanent electric dipole moment of mercury 199 atoms
(2005)The measurement of a nonzero permanent electric dipole moment (EDM) on an atom or particle would reveal a new source of CP violation beyond the Standard Model. The first measurement of the 199Hg EDM using a UV laser to ... -
Local structural studies of oriented high temperature superconducting cuprates by polarized XAFS spectroscopy
(1998)Doping (Sr,Ba) in La$\sb{2-x}$(Sr,Ba)$\sb{x}$CuO$\sb4$ induces high T$\sb{c}$ superconductivity in addition to profound changes in structural, magnetic and normal state electronic properties. The purpose of this thesis is ... -
Luminescence labeling and dynamics of growth active crystal surface structures
(2008)One aspect of the multifaceted proposal by A. G. Cairns-Smith (CS), that imperfect crystals have the capacity to act as primitive genes by transferring the disposition of their imperfections from one crystal to another, ... -
Machine Learning for Aero-Optical Wavefront Characterization and Forecasting
The laser is a masterwork of the previous century of physics, but to harness its power coherently in the turbulent wilds of the sky remains a challenge. Free-space lasing hosts myriad applications, from direct energy ... -
Magnetic Field Determination for Run 1 of the Fermilab Muon g-2 Experiment
The muon $g-2$ experiment at Fermilab aims to measure the anomalous magnetic moment of the muon, $a_{\mu}$, to a precision of 140 parts per billion (ppb). The measurement will shed light on the current $>$3$\sigma$ deviation ... -
Magneto-transport and Photoresponse of 2D Semimetals
A semimetal is a material with a small overlap between the bottom of the conduction band and the top of the valence band. Near the Fermi level, the density of state is almost negligible. Thus, in the two dimensional limit, ... -
Mathematical methods for magnetoencephalography forward and inverse modeling with enhanced spatial resolutions
Next-generation magnetoencephalography (MEG) sensors, optically-pumped magnetometers (OPMs), can be placed closer to the head and are expected to measure signals with improved spatial resolutions. This introduces many ... -
Measurement of a solid-state triple point at the metal-insulator transition in vanadium dioxide
(2014-04-30)The first-ever accurate measurement of a solid-state triple point in vanadium dioxide was made by performing simultaneous optical and transport measurements on a purpose-built nanomechanical strain apparatus that actively ... -
Measurement of light shift ratios with a single trapped p138sBap+s ion, and prospects for a parity violation experiment
(2003)This thesis describes the development and implementation of a new scheme for observing RF transitions between spin states in a single, trapped Ba + ion. We use optical pumping to place the ion in a selected magnetic sublevel ... -
Measurement of the parity nonconserving spin-rotation of transmitted cold neutrons through a liquid helium target
(1998)We completed the first measurement of the parity non-conserving neutron spin-rotation in helium, $\varphi\sb{\rm PNC}.$ The PNC spin-rotation is sensitive to the isovector pion exchange amplitude, $f\sb{\pi},$ in the meson ... -
Measurement of the Z tau tau boson production cross-section in proton-proton collisions at sqrt(s) = TeV with the ATLAS detector
(2012-09-13)The first measurement of the inclusive cross-section of the <italic>Z</italic> boson decaying to two tau leptons was measured with the ATLAS detector at the LHC. The data sample in this analysis represents an integrated ... -
Measurement-Induced Quantum Phase Transitions
There has been a recent increase in interest towards a nonequilibrium phenomenon called the measurement-induced quantum phase. These phases occur in "hybrid" systems where unitary evolution is interspersed with projective ... -
Measuring how lipid membranes respond to physical perturbations: How charge alters lipid miscibility, how shear disrupts interleaflet coupling, and how prebiotic compounds affect membrane stability
The physical and chemical properties of lipid bilayers determine their biological function as the main structural component of cell membranes. The response of lipid membranes to various perturbations is, in general, difficult ... -
Measuring the anomalous precession frequency wa for the Muon g − 2 experiment
Announced in April 2021, the Run−1 result of the Fermilab Muon g−2 experiment increased the discrepancy between the measured value of the magnetic anomaly of the muon, aμ, and the value predicted by Standard Model theory ... -
Measuring the Mass of the W Boson with the Last 3.7 fb−1 of Tevatron Data.
This thesis presents the results of an analysis of the $3.7\,\textrm{fb}^{-1}$ of Tevatron proton-antiproton data collected with the DZero (D0) Detector at Fermilab during the ``RunIIb34'' period, with the goal of extracting ... -
Measuring the Precession Frequency in the E989 Muon g-2 Experiment
The E989 Muon $g-2$ Experiment aims to measure the anomalous magnetic moment of the muon, $a_\mu$, to an unprecedented precision of 140 parts per billion (ppb). There currently stands a greater than 3$\sigma$ discrepancy ...