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Filtering by: Creator Denman, Kenneth L. Remove constraint Creator: Denman, Kenneth L. Committee Member Krane, Kenneth Remove constraint Committee Member: Krane, Kenneth Resource Type Dissertation Remove constraint Resource Type: Dissertation

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  • Hartree-Fock electronic structure calculations forfree atoms and immersed atoms in an electron gas

    Creator:
    Walsh, Kenneth Charles
    Abstract:
    Electronic structure calculations for free and immersed atoms are performed in the context of unrestricted Hartree-Fock Theory. Spherical symmetry is broken, lifting de-generacies in electronic configurations involving the magnetic quantum number m. Basis sets, produced from density functional theory, are then explored for completeness. Com-parison to spectroscopic data is done...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE THESIS OF Kenneth Charles Walsh for the degree of

  • An iterative investigation into the implementation of handheld computers as learning tools in a science museum

    Creator:
    Phipps, Molly E.
    Abstract:
    In this study I discuss the state of Free-Choice Learning research, and an investigation into the use of personal ubiquitous technology on visitors' experiences at a science center. The three manuscripts included in this document: 1. Review published research on free-choice learning from 1997-2007 from selected journals 2. Examine visitors'...
    Resource Type:
    Dissertation
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    committee Emily van Zee, Kerry Carlin-Morgan, Michael Harte, and Kenneth Krane, thank you for your

  • Temporal gamma-ray spectrometry to quantify relative fissile material content

    Creator:
    Williford, Russell S.
    Abstract:
    A new method for delayed gamma-ray spectrometry to quantify the relative content of fissile material is developed and demonstrated to support international efforts in bolstering non-destructive assay capabilities. Previous traditional delayed gamma-ray spectrometry techniques rely upon nuclear data that often carry very high uncertainty. The new method removes the requirement...
    Resource Type:
    Dissertation
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    to create an estimate of fissile material content (L. Campbell 2011

  • Peak reconstruction of single particle mass spectrometry transient signals to recapture ion count and improve SNM ratio measurements

    Creator:
    Mannino, Mitchell
    Abstract:
    Quick and accurate measurements of nanoparticles have important applications in biology, environmental and non-proliferation areas. Calculation of isotopic ratios, particularly in special nuclear materials, has relied on integration of nanoparticle counts and limited the capability of counting minor isotopes. Rapid transient detection method of nanoparticles has demonstrated the effectiveness of...
    Resource Type:
    Dissertation
    Full Text:
    is the “cool gas” and typically flows at 15 L/min to keep the plasma from melting the torch walls

  • On Primary Vortex Shedding Regimes between Long Tandem Plates

    Creator:
    Howard, Trevor Kent
    Abstract:
    Vortex shedding is a phenomenon relevant to any industry dealing with fluid flow. The shed vortices often produce oscillatory forces, which have been suspect in the catastrophic failure of airplanes and bridges alike. To prevent further engineering failures a better understanding of the underlying physics is needed. It has been...
    Resource Type:
    Dissertation
    Full Text:
    ones. The Reynolds number in addition to velocity and a length scale, l, is determined by the fluid

  • Foliar interception and uptake of ³⁶Cl by crops

    Creator:
    Bytwerk, David Paul
    Abstract:
    Greenhouse studies were conducted to determine interception, absorption, and translocation values for foliar applied ³⁶Cl. Foliar interception and uptake of contaminated irrigation water by crops is a major pathway for the transport of radionuclides to human beings in scenarios relevant to the waste disposal community. Performance assessments of many repositories...
    Resource Type:
    Dissertation
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    this dissertation possible. My committee members David Hamby, Kenneth Krane, Alena Paulenova, and

  • A Two-element CZT-based Radioxenon Detection System for Nuclear Weapon Test Monitoring

    Creator:
    Ranjbar, Lily
    Abstract:
    Detection of xenon radioisotopes (radioxenons) has proven to be an important method for detecting nuclear explosions and is particularly well suited for detecting undeclared underground testing. The radioxenon isotopes ¹³¹mXe (t₁/₂ = 11.934 d), ¹³³mXe (t₁/₂ = 2.19 d), ¹³³Xe (t₁/₂ = 5.243 d) and ¹³⁵Xe (t₁/₂ = 9.14 h)...
    Resource Type:
    Dissertation
    Full Text:
    . Kenneth Krane, Dr. David Hamby, Dr. Hoari Yang and Dr. Huaping Liu, thank you for accepting to be on my

  • Particle fluxes in the eastern tropical Pacific Ocean--sources and processes

    Creator:
    Fischer, Kathleen M.
    Resource Type:
    Dissertation
    Full Text:
    Becker, and Kenneth Krane. I would like to thank W. D. Loomis for agreeing to substitute for Robert

  • A Beta-Gamma Radioxenon Detection System using Ultra-Bright Inorganic Scintillators and Solid State Detectors

    Creator:
    Czyz, Steven A.
    Abstract:
    The atmospheric detection of four radioxenon isotopes (131mXe, 133mXe, 133Xe, and 135Xe) released during a nuclear detonation is a key tool utilized by the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) to identify clandestine nuclear weapon testing activity. These radioxenon isotopes all decay via the near-simultaneous release of an electron and a...
    Resource Type:
    Dissertation
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    frustrating and involved data analysis. My doctoral committee: Dr. Kenneth Krane, Dr. Haori Yang

  • Dynamic behavior of silty soils

    Creator:
    Sunitsakul, Jutha
    Abstract:
    The cyclic resistance of predominantly fine-grained soils has received considerable attention following ground and foundation failures at sites underlain by silt-rich soils during recent earthquakes. In several cases substantial ground deformation and reduced bearing capacity of silt soils has been attributed to excess pore pressure generation during cyclic loading. These...
    Resource Type:
    Dissertation
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    Vinson, Marvin Pyles, Jonathan Istok, and Kenneth Krane. Several former graduate students contributed