Index Catalog // ScholarsArchive@OSU

Exploring Novel Contrast Agents with Anthropomorphic Mesh Models in MCNP

Creator:: Garcia, Jacqueline K.
Abstract:: Breast cancer is the leading cancer in women with an estimated 13% of women in the United States developing a form of invasive breast cancer in her lifetime. The survival rate is estimated to be 85%, but the American Cancer Society estimates that early detection of breast cancer in the...
Resource Type:: Dissertation
Full Text:: fission sources, pulse height tallies, stochastic geometry, mesh tally plots, photon Doppler broadening

Dynamical System Scaling of Fuel Performance During Reactivity Insertion Accidents

Creator:: Dueñas, Alexander M.
Abstract:: Fuel qualification timelines for new fuel technology under ideal conditions can take between 20-25 years to be fully qualified from initial concept to deployment as full fuel assemblies. To reduce the timeline and costs, new separate-effects test and integral-effects test experiments, advanced instrumentation, and advanced modeling and simulation tools are...
Resource Type:: Dissertation
Full Text:: results in a reactor power pulse that is quickly mitigated by the Doppler broadening of uranium-238’s

Control Rod Shadowing Effects in Control Rod Calibrations of The Oregon State TRIGA® Reactor

Creator:: Spoerer, Tracey T.
Abstract:: Control rod calibration experiment results for the Oregon State TRIGA® Reactor (OSTR) immediately following LEU conversion in 2008, and MCNP® 5 predicted rod worths from the 2008 LEU Conversion Safety Analysis Report (CSAR) are discussed. The reactivity worth of the four OSTR control rods are measured using the rod-pull method....
Resource Type:: Masters Thesis

External Coupling of Computational Fluid Dynamics Modeling of the Density Evolution Inside of the Helium-3 Enhanced Negative Reactivity Insertion (HENRI) System with the Monte-Carlo Neutronics code Serpent 2

Creator:: Leingang, Cole W.
Abstract:: The testing of nuclear fuel under reactivity-initiated accident (RIA) conditions is paramount for the better understanding of the fuel’s behavior during these transient accident events. The Transient Reactor Test (TREAT) facility is a nuclear reactor that will be capable of recreating the thermal-hydraulic and neutronic boundary conditions representative of RIA...
Resource Type:: Masters Thesis

Development of a Novel MEMS Thermal Sensor Array for Pebble Bed HTGRs

Creator:: Hertel, Matthew A.
Abstract:: A novel high temperature thermal instrument is proposed, which utilizes a dual-sensing platinum resistor encased in a mono-crystalline alpha-alumina (sapphire) substrate. The instrument is comprised of four platinum trace elements, oriented with 90° rotational symmetry atop a 1120 oriented crystal lattice substrate. All four of these sensors measure temperature directly...
Resource Type:: Dissertation

Feasibility Study of a Thermal Spectrum Thorium Breeder Reactor Without Chemical Reprocessing

Creator:: Keppen, Jackson D.
Abstract:: This thesis presents a feasibility study of a thorium fueled thermal spectrum breeder-burner reactor that operates without chemical reprocessing. Materials were evaluated for their potential as moderators using standard analytical methods. These materials were then used as moderators to evaluate criticality and enrichment in an infinite fuel pin lattice. The...
Resource Type:: Masters Thesis
Full Text:: ’, widen as the material increases in tempera- ture; this process is known as ‘Doppler broadening’ [7

Creating Anthropomorphic Models with Mesh Phantoms in MCNP to Simulate Mammography

Creator:: Garcia, Jacqueline K.
Abstract:: Breast cancer is the most common cancer among women as it accounts for about 25% of all female cancer cases. Studies have shown that early detection of breast cancer increases the chances of a positive prognosis amongst patients therefore it is crucial to provide accurate diagnosis tools in routine exams....
Resource Type:: Masters Thesis

Cation Substitution Effects in Complex Transition Metal Oxides

Creator:: Duell, Brett A.
Abstract:: Understanding structural evolution in solids as composition changes is essential to materials properties prediction. Such structure-properties relationships are the theme of solid state chemistry. Materials scientists and chemists have utilized an abundance of simple crystal structures to enhance understanding of chemical and structural origins of properties in materials for decades....
Resource Type:: Dissertation

Vortical Structures in Transition to Turbulence through Randomly Packed Porous Media: Scale, Energy, and Mixing Characteristics

Creator:: Mohammadi Ziazi, Reza
Abstract:: Vortical structures are the driving mechanism of transition to turbulence in porous media requiring adequately resolved observations along with analysis of the scale and energy of ﬂow within the pores. Of speciﬁc interest is to understand the vortex dynamics, energy, and turbulent mixing and transport properties in the scale of...
Resource Type:: Dissertation
Full Text:: the valuable opportunity to become one of his students, for broadening my horizons as a researcher

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
Full Text:: PIPSBox. Doppler broadening was applied in MATLAB. Axes were chosen to agree with the axes chosen in the

ScholarsArchive@OSU

Exploring Novel Contrast Agents with Anthropomorphic Mesh Models in MCNP

Dynamical System Scaling of Fuel Performance During Reactivity Insertion Accidents

Control Rod Shadowing Effects in Control Rod Calibrations of The Oregon State TRIGA® Reactor

External Coupling of Computational Fluid Dynamics Modeling of the Density Evolution Inside of the Helium-3 Enhanced Negative Reactivity Insertion (HENRI) System with the Monte-Carlo Neutronics code Serpent 2

Development of a Novel MEMS Thermal Sensor Array for Pebble Bed HTGRs

Feasibility Study of a Thermal Spectrum Thorium Breeder Reactor Without Chemical Reprocessing

Creating Anthropomorphic Models with Mesh Phantoms in MCNP to Simulate Mammography

Cation Substitution Effects in Complex Transition Metal Oxides

Vortical Structures in Transition to Turbulence through Randomly Packed Porous Media: Scale, Energy, and Mixing Characteristics

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

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