Index Catalog // ScholarsArchive@OSU

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

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

Simulating the dose enhancement effects of platinum nanoparticles in a spherical geometry with Monte Carlo calculations

Creator:: Mathews, Joshua A.
Abstract:: Background: The use of high-Z nanoparticles as radiation dose enhancers has been researched thoroughly over the past decade. High-Z nanoparticles introduced to a medium increase the probability of photoelectric absorption. This leads to an increase in the production of short range characteristic and Auger electrons and, thus, local radiation dose....
Resource Type:: Masters Thesis
Full Text:: deposition kernel and cavity calculations.  DOPPLER BROADENING = On; the default. 3.2.3 Geometrical

Theoretical study of beryllium borohydride Be(BH₄)₂

Creator:: Alghamdi, Maha D.
Abstract:: Ab initio calculations using the B3LYP and CCSD(T) methods were employed in this work to explore the most stable structure of the intriguing compound Be(BH₄)₂, for which as many as seven different structures have been proposed in the literature. Use of the B3LYP density functional method with several large basis...
Resource Type:: Masters Thesis
Full Text:: cause of this could be line broadening caused by a short lifetime of any state due to rapid

Gas ratio and pressure effects on the 6328 A⁰ transition of the helium-neon gas laser

Creator:: Freytag, Edwin Karl
Abstract:: This is a review paper of current literature in the area of pressure effects on gaseous lasers. This thesis discusses the mechanisms which relate the relative power output of the 6328 A[superscript ⁰] neon transition to total and partial pressure variations of the helium-neon gaseous laser. The operation of the...
Resource Type:: Masters Thesis

X-ray triggering by automatic sensing

Creator:: Murtagh, Richard James
Abstract:: A brief history of X-ray control methods is presented, and the instrumentation requirements and physiological considerations pertaining to an automatic X-ray control system are discussed. The latter half of the thesis describes the design and operation of a device which will permit medical radiographs to be taken automatically and at...
Resource Type:: Masters Thesis
Full Text:: , rather than the respiration cycle. This has led to a broadening of the original goal, the subsequent

A method for calculation of group-averaged resonance parameters

Creator:: Nail, James Harold
Abstract:: A method of treating resonance captures for few energy group calculations is developed using the Narrow Resonance-Infinite Absorber approximation to the resonance integral. The application of this method is not restricted to this approximation, however, as other approximations to the resonance integral could also be used. The approach presented defines...
Resource Type:: Masters Thesis
Full Text:: . However, the form obtained here will be sufficient for the present, as Doppler broadening may be

A simulated two-group method for computing boiling water reactor power distributions

Creator:: Hatteberg, Ronald Leonard
Abstract:: A computer code capable of modeling the burnup dependent static behavior of a boiling water reactor was developed. The code calculates three-dimensional quarter core power distributions using a simulated two-group diffusion theory model. Thermal-hydraulic calculations account for the interaction between power, coolant flow, and void fraction distributions. Cross sections are...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

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

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

Creating Anthropomorphic Models with Mesh Phantoms in MCNP to Simulate Mammography

Simulating the dose enhancement effects of platinum nanoparticles in a spherical geometry with Monte Carlo calculations

Theoretical study of beryllium borohydride Be(BH₄)₂

Gas ratio and pressure effects on the 6328 A⁰ transition of the helium-neon gas laser

X-ray triggering by automatic sensing

A method for calculation of group-averaged resonance parameters

A simulated two-group method for computing boiling water reactor power distributions

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