Browsing Physics by Title
Now showing items 46-65 of 291
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Dark Matter Particle Astrophysics: How Dark Matter Can Affect Subhalos, Neutrinos, and Neutron Stars
Predicted almost a century ago, dark matter explains many astrophysical observations including the motion of matter on galaxy and galaxy cluster scales, the clustering of galaxies, and the anisotropies in the cosmic microwave ... -
Data-Driven Methods for Physics-Constrained Dynamical Systems
As the availability of large data sets has risen and computation has become cheaper, the field of dynamical systems analysis has placed increased emphasis on data-driven numerical methods for diagnostics, forecasting, and ... -
Data-driven modeling and control of quantum dynamics
Control is the factor that delineates quantum science from quantum engineering. Model-based optimal control is a modern approach to practical control engineering. It designs control laws using optimization based on dynamical ... -
Deep Learning Applications for Particle Physics in Tracking and Calorimetry
This thesis presents an in-depth exploration of advanced deep learning applications in particle physics, particularly in the context of tracking, calorimetry, and energy reconstruction within High Energy Physics (HEP) ... -
Demonstration of trapped single laser cooled indium ions
(1995)Single Indium ions have been confined in a RF Paul-Straubel trap, positioned within an ultra high vacuum environment. Indium is a group IIIA atom and, in its singly ionized state, has a J = 0 $-$ J = 0 "clock" transition ... -
Design and Optimization of Dielectric Metasurface Optics
In recent years, sub-wavelength, aperiodic gratings, currently coined metasurfaces have the potential to manipulate electromagnetic elds with extreme control in a remarkably small form factor. These planar optical components ... -
Detecting new planets in transiting systems
(2006)I present an initial investigation into a new planet detection technique that uses the transit timing of a known, transiting planet. The transits of a solitary planet orbiting a star occur at equally spaced intervals in ... -
A Determination of the Mass of the Deuteron
(2012-08-10)We have measured the atomic mass of the deuteron relative to the calibration <super>12</super>C<super>6+</super> and <super>12</super>C<super>4+</super> ions and arrived at a value of 2 014 101 778 052 (40) pu for the ... -
Developing Laboratory-Based X-ray Spectroscopies for Energy and Materials Research spectroscopy
Advanced x-ray spectroscopies interrogate a material’s electronic structure in an element-specific manner. Traditionally, X-ray absorption fine structure (XAFS) and X-ray emission spectroscopy (XES) studies are performed ... -
Developing the Precision Magnetic Field for the E989 Muon g–2 Experiment
The experimental value of $(g\hbox{--}2)_\mu$ historically has been and contemporarily remains an important probe into the Standard Model and proposed extensions. Previous measurements of $(g\hbox{--}2)_\mu$ exhibit a ... -
Development of a new water-water interaction potential and application to molecular processes in ice
(1999)A new potential energy function modeling the interaction among water molecules is presented. The dominant attractive interaction among the molecules, the electrostatic interaction, is represented with a multipolar expansion ... -
Development of a quantum, magnetic-imaging platform for biophysical measurements
Single-molecule measurements help build up the fundamental understanding of many important bio-logical functions. Due to the wide variety of molecules that have been studied, and the properties of these molecules that often ... -
Development of new technologies for precision torsion-balance experiments
Torsion balances were first used for precision measurements of physics centuries ago and continue to be used to probe physical forces and test for new physics. Improving beyond current limits requires better sensitivity ... -
Development Towards a Model-dependent Measurement of the Muon Neutrino Charged Current Single Pi-plus Pion Momentum Spectrum
In this thesis the development and study of a method for a model-dependent measurement of the muon neutrino charged current (CC) single pion interaction's positive pion momentum spectrum is proposed. The measurement is ... -
Development Towards a Model-dependent Measurement of the Muon Neutrino Charged Current Single Pi-plus Pion Momentum Spectrum
In this thesis the development and study of a method for a model-dependent measurement of the muon neutrino charged current (CC) single pion interaction's positive pion momentum spectrum is proposed. The measurement is ... -
Developments for a measurement of the beta-nu correlation and determination of the recoil charge state distribution in 6He beta decay
The beta-nu of a pure Gamow-Teller beta decay such as the 6He decay is sensitive to tensor-type weak currents predicted by theories beyond the Standard Model. An experiment is developed at University of Washington aiming ... -
Developments for the $^6$He $\beta-\bar{\nu}$ angular correlation experiment
This thesis describes developments toward the measurement of the angular correlation between the beta and the antineutrino in the beta decay of $^6$He. This decay is a pure Gamow-Teller decay which is described in the ... -
Developments in the application of Cyclotron Radiation Emission Spectroscopy (CRES) towards the precise determination of MeV-scale β-energy spectra
This thesis presents an apparatus for detection of cyclotron radiation yielding a frequency-based β± kinetic energy determination in the 5 keV to 2.1 MeV range, characteristic of nuclear β decays. The cyclotron frequency ... -
Developments in the Theory of X-ray Absorption and Compton Scattering.
X-ray spectroscopy is a widely used technique in experimental and theoretical physics for studying electronic and chemical properties of materials. Theoretical approaches for studying x-ray absorption (XAS) and x-ray ... -
Device Physics of Two-Dimensional Crystalline Materials
The study of two-dimensional (2D) electrons in condensed matter physics has two milestones: quantum Hall effects in semiconductor heterostructures and superconductivity in cuprates. In both, the 2D electrons are embedded ...