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Filtering by: Alternative title ssim Real-time observation of hydrogen absorption by LaNi5 with quasi-dynamic neutron tomography Remove constraint Alternative title ssim: Real-time observation of hydrogen absorption by LaNi5 with quasi-dynamic neutron tomography Degree Level Master's Remove constraint Degree Level: Master's

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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
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    , along with a variety of other materials. Since the radiograph is digitally created in near real-time

  • Optimum temporal and contrast considerations in extremely high speed motion neutron radiography

    Creator:
    Greek, Kevin J.
    Abstract:
    A facility developed using the OSU TRIGA pulsing capability and high speed motion photography has been used successfully for more than a decade to produce dynamic neutron radiographs of solid propellant combustion, two phase flow, and liquid streamflow. The existing imaging components have undergone little modification since the experiment's inception...
    Resource Type:
    Masters Thesis
    Full Text:
    inconvenient. Neutron radiographic recording of dynamic subjects or real-time imaging requires an alternate

  • 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

  • Speciation of inorganic arsenic by hydride generation atomic absorption spectroscopy

    Creator:
    Ikeda, Marcia Sakiko
    Abstract:
    A sensitive technique for the determination of As(III) and As{V) at μ/L and sub-μg/L concentrations from a single sample aliquot has been developed. This technique is based on the hydride generation atomic absorption (HGAA) spectrophotometry. The hydrides of the arsenic species are generated in a reaction vessel by mixing the...
    Resource Type:
    Masters Thesis
    Full Text:
    vessel and swept by hydrogen into the absorption cell where the atomization of the hydride occurs in

  • 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

  • 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

  • Neutron Attenuation and Hydration of Cement Paste made with Light and Heavy Water

    Creator:
    Goodwin, Margaret N.
    Abstract:
    Neutron radiography has been used to study cementitious materials. This thesis studies the impact of heavy water on both the rate of hydration and neutron radiography. The neutron attenuation coefficients of light and heavy water were measured. Cement pastes were made with both heavy and light water. The attenuation coefficients...
    Resource Type:
    Masters Thesis
    Full Text:
    . Title: Neutron Attenuation and Hydration of Cement Paste made with Light and Heavy Water

  • The use of ⁶⁰Co cell survival curves in BNCT research

    Creator:
    Johnson, Jennifer Elizabeth
    Abstract:
    The cell survival curve is the only means by which to both qualitatively and quantitatively assess morphologic alterations directly resulting from in vitro irradiation of the cell. A ⁶⁰Co cell survival curve experiment has successfully demonstrated the response of the AtT-20 clone mammalian cell line to the effects of gamma...
    Resource Type:
    Masters Thesis
    Full Text:
    cells, with subsequent reculture and observation. This study addresses the importance of the cell

  • Journey to the Center of GW170817: Bayesian parameter estimation of outflows from binary neutron star mergers

    Creator:
    Rodriguez, Isabel J.
    Abstract:
    The discovery of GW170817 provided the first empirical evidence that merging binary neutron star systems are both progenitors of short gamma-ray bursts, as well as the primary sites of the nucleosynthetic rapid-neutron capture process. Initially detected as gravitational wave (GW) and gamma-ray burst (GRB) triggers, GW170817 was well-localized and follow-up...
    Resource Type:
    Masters Thesis
    Full Text:
    that with future joint GW-GRB observations of binary neutron star merger events, similar techniques