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  • Neutron radiography and tomography : determining and optimizing resolution of neutron sensitive multi channel plate detectors

    Creator:
    Williams, Walter James
    Abstract:
    The objective of this work was to determine and optimize the resolution of a neutron sensitive Multi-Channel Plate (MCP) detector in order to determine its capabilities in radiography and tomography. The Oregon State University, Neutron Radiography Facility added an MCP Detector in 2012 in order to analyze these capabilities. The...
    Resource Type:
    Masters Thesis
    Full Text:
    , along with a variety of other materials. Since the radiograph is digitally created in near real-time

  • Enhancement and modeling of cryogenic solid-state hydrogen storage systems with a novel microchannel thermal management device

    Creator:
    Loeb, Christopher S.
    Abstract:
    Compact storage systems demonstrating increased hydrogen storage capacity are the key to advancing the growth of the hydrogen economy throughout the world and reducing the global dependence on fossil fuels for transportation. The use of highly porous adsorbent materials for reversible hydrogen storage is a promising pathway towards achieving storage...
    Resource Type:
    Dissertation
    Full Text:
    Cryogenic Solid-State Hydrogen Storage Systems with a Novel Microchannel Thermal Management Device By

  • Phase distribution parameter determination by neutron radiography

    Creator:
    Skinner, Jesse B.
    Abstract:
    A phase distribution parameter has been added to the one-dimensional two-phase horizontal flow conservation equations. The phase distribution parameter was incorporated into the conservation equations in an attempt to add stability and remove correlation switching by incorporating gravity. Determination of the phase distribution parameter requires an average void fraction profile...
    Resource Type:
    Masters Thesis
    Full Text:
    information can be efficiently gathered with real time neutron radiography. As a result of the information

  • A Cosmic-ray Muon Tomography System for Safeguarding Dry Storage Casks

    Creator:
    Liao, Can
    Abstract:
    Because of the growth of the nuclear power industry in the United States and the policy to ban reprocessing of commercial spent nuclear fuel, the spent fuel inventory at commercial reactor sites has been increasing. With the Yucca Mountain project on hold, more spent fuel is expected to be stored...
    Resource Type:
    Dissertation
    Full Text:
    tomography system with all components.............71 Figure 5-18: The signal chain of the data

  • A theoretical description of anisotropic chemical association and its application to hydrogen-bonded fluids

    Creator:
    Peery, Travis B.
    Abstract:
    The thermodynamic and structural effects of highly anisotropic, short-ranged attraction are investigated for single- and four-site interaction models using Wertheim's multi-density graph theory of chemical association. Both models consist of associating hard spheres, where the saturable attraction sites are described by conical wells centered in the hard core and evaluated...
    Resource Type:
    Dissertation
    Full Text:
    Classical sketch of two water molecules forming a hydrogen bond 20 2.4 Time scales of molecular processes

  • Dissolution of uranium dioxide microspheres in carbonate and hydrogen peroxide solutions

    Creator:
    Adams, Timothy G.
    Abstract:
    Uranium dioxide has been used in industry both as a fuel for power reactors and as a target for the production of radioisotopes. One of the most important radioisotopes produced using these targets is molybdenum-99 (Mo-99, 65.94hr half-life), which is the parent isotope to technetium-99m (Tc-99m, 6.01hr half-life), a radioisotope...
    Resource Type:
    Masters Thesis
    Full Text:
    . [1] [2] Molybdenum-99, produced by either the thermal neutron fission of uranium-235 in nuclear

  • Exchange interaction studies in magnetic semiconductors by neutron scattering

    Creator:
    Wiren, Zachary Quincy
    Abstract:
    Theories predict that making a dilute magnetic semiconductor strongly p -type would allow it to remain ferromagnetic at room temperature. This is of intrest as a ferromagnetic semiconductor would allow for a great many applications in the field of spintronics. Neutron scattering experiments were undertaken to better understand the antiferromagnetic...
    Resource Type:
    Dissertation
    Full Text:
    . . . . . . . . . . . . . . . . . . . . . 35 4.7 Cd1−xMnxTe, rarely studied by neutron scattering due to the high neutron absorption of Cd

  • Commissioning of the NDDL-40 Neutron Detection System at Oregon State University

    Creator:
    Boulton, Nicholas M.
    Abstract:
    The Neutron radiography facility (NRF) at Oregon State University (OSU) has been modified to begin working on the non-destructive evaluation of concrete materials to study the early stages of shrinkage, cracking, and water transport of concrete during the curing process. The objective of this work is to investigate the efficiency...
    Resource Type:
    Masters Thesis
    Full Text:
    use of neutron radiography and tomography with the eventual goal of concrete imaging. Working in

  • Assessing mental workload and situation awareness in the evaluation of real-time, critical user interfaces

    Creator:
    Strawn, Jordan J.
    Abstract:
    While there are many ways to evaluate a user interface design, the user's mental workload and situation awareness (SA) are particularly important considerations in the supervisory control of safety-critical systems. Typically, operators of these systems must monitor high-volume, time-sensitive status information. Interface design for this domain can be challenging and...
    Resource Type:
    Masters Thesis
    Full Text:
    suitability of each. In recommending a suite of measures, we sought general applicability to the real-time

  • Investigation of x-ray computed tomography for Portland cement phase quantification

    Creator:
    Deboodt, Tyler J.
    Abstract:
    Cementitious materials are often characterized through the use of advanced analytical techniques to understand the macro-, micro-, and nano-scale properties, including phase formation during hydration, and subsequent potential deterioration mechanisms which can affect service life. A major limitation with using such analytical techniques to quantify solid phases in cementitious systems...
    Resource Type:
    Dissertation
    Full Text:
    : Investigation of x-ray computed tomography for portland cement phase quantification Abstract approved