Index Catalog // ScholarsArchive@OSU

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
Full Text:: : Steven R. Reese A new method for delayed gamma-ray spectrometry to quantify the relative content

An extension of the quantum theory of scattering to the non-asymptotic regime using Bohmian trajectories

Creator:: Stenson, Jared R.
Abstract:: Quantum mechanics provides a conventional theory of scattering that is limited in at least two ways: it focuses exclusively on the asymptotic regime and, in a more general sense characteristic of all quantum descriptions, provides no concrete account of individual particle evolution in spacetime. This is particularly true during the...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Jared R. Stenson for the

Extending the clinical applications of commercially available optically stimulated luminescence (OSL) dosimeters

Creator:: Keller, James R.
Abstract:: We present the results of our experiments designed to extend the clinical applications of commercially available Optically Stimulated Luminescence (OSL) Dosimeters. Our initial experiments demonstrate the linear response of the OSL dosimeters for doses under 200 cGy and the non-linear response of the device after 200 cGy. Our experiments show...
Resource Type:: Dissertation
Full Text:: R. Keller for the degree of Doctor of Philosophy in Medical Physics presented on June 3, 2013

Scanning photocurrent microscopy study of photovoltaic and thermoelectric effects in individual single-walled carbon nanotubes

Creator:: DeBorde, Tristan
Abstract:: Carbon Nanotubes are a unique family of nanostructures that have shown remarkable promise for mechanical, electrical, and optical applications. Fundamentally similar to the earlier discovered Buckminsterfullerene (C₆₀), carbon nanotubes are hollow cylinders formed from a single sheet of carbon atoms. The research presented in this dissertation investigates several carbon nanotube...
Resource Type:: Dissertation
Full Text:: . 12 1.5 References 1 Wilder, J. W. G., Venema, L. C., Rinzler, A. G., Smalley, R. E. & Dekker

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:: 4.10 Variation of the inverse reduced correlation length R/ with T/TC. . 123 4.11 Temperature

Use of BC-523a liquid scintillator for simultaneous neutron spectroscopy and gamma counting with the implementation of a neutron history reconstruction algorithm

Creator:: Frey, Wesley D.
Abstract:: Real-time, high efficiency neutron spectroscopy has, historically, been a persistent challenge in the field of radiation detection and, for the most part, has gone unsolved. The most promising method to resolve this challenge, is the boron-capture technique using an organic scintillation system (BC-523a). Detectors that utilize this method possess an...
Resource Type:: Dissertation
Full Text:: 12 r flux, with respect to the distance traveled through the shielding material (dr), is equal

A study of actinide de-excitation through neutron emission from the deuteron induced fission of ²³⁸U

Creator:: Sprunger, Peter Hayden
Abstract:: The process of de-excitation of the actinides is a very important question in both pure and applied science. In this dissertation the process was studied using the neutrons emitted in coincidence with fission induced by the bombardment of ²³⁸U with 14.85 MeV deuterons. Neutrons can be emitted at multiple stages...
Resource Type:: Dissertation

Radiative Acceleration and Emission from Relativistic Outflows

Creator:: Chhotray, Atul
Abstract:: Outflowing streams of matter or jets are a common phenomenon in the observeduniverse. The most extreme and powerful jets are relativistic, i.e., they travel at speedscomparable to the of speed light. Gamma Ray-Bursts (GRBs) and Active Galactic Nuclei(AGNs) are two sources of these relativistic jets. In this work I will...
Resource Type:: Dissertation
Full Text:: . . . . . . . . . . . . 130 4.10 Same as Fig. 4.9, but zooming out to longer z/R to see the �nal values of (Γβ)L

Local Accessibility of Objective, Classical Reality

Creator:: Kincaid, Joshua J.
Abstract:: The fact that measuring a quantum system reduces it to apparently classical behavior, eliminating the interference patterns that are a hallmark of quantumness, cries out for an explanation. That explanation has been provided by the recognition of decoherence,whereby the interference is destroyed by the very interaction that acquires information.We begin...
Resource Type:: Dissertation
Full Text:: a particle in a state ∣∣ψR〉S with a wavefunction ψR(x) that is completely localized around the

Sub-diffraction light propagation and imaging in planar negative refraction waveguides

Creator:: Wangberg, Robyn
Abstract:: In this dissertation we study the electromagnetic properties of planar waveguides with non-magnetic strongly anisotropic dielectric cores. We develop an analytical description of the mode propagation in these systems and show that the index of refraction can be either positive or negative depending on the specific material parameters. Propagating modes...
Resource Type:: Dissertation
Full Text:: wave equation, ∇2 �E(�r, t) = �µ c2 ∂2 �E(�r, t) ∂t2 , (2.5) where c = 2.9979 × 1010cm/s is the

ScholarsArchive@OSU

Temporal gamma-ray spectrometry to quantify relative fissile material content

An extension of the quantum theory of scattering to the non-asymptotic regime using Bohmian trajectories

Extending the clinical applications of commercially available optically stimulated luminescence (OSL) dosimeters

Scanning photocurrent microscopy study of photovoltaic and thermoelectric effects in individual single-walled carbon nanotubes

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

Use of BC-523a liquid scintillator for simultaneous neutron spectroscopy and gamma counting with the implementation of a neutron history reconstruction algorithm

A study of actinide de-excitation through neutron emission from the deuteron induced fission of ²³⁸U

Radiative Acceleration and Emission from Relativistic Outflows

Local Accessibility of Objective, Classical Reality

Sub-diffraction light propagation and imaging in planar negative refraction waveguides

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