UNT Theses and Dissertations - 60 Matching Results

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Antiferromagnetic Ordering in Picryl-Amino-Carbazyl

Description: The purpose of the experiment was to investigate other paramagnetic salts to determine whether the W. B. perchlorate type peak was more common than previously suspected. An organic salt, picryl-n-amino-carbazyl, was chosen.
Date: August 1964
Creator: Porter, Wilbur A.
Partner: UNT Libraries
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Application of the Wigner Formalism to a Slightly Relativistic Quantum Plasma

Description: A slightly relativistic fermion gas is described by the dynamical theory obtained from the Wigner distribution function. The problem is approached in a self-consistent manner including the two-body Darwin Hamiltonian. The goal is to find the departures from equilibrium and dispersion relations for wave propagation in the gas.
Date: August 1967
Creator: Harper, John H.
Partner: UNT Libraries
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A Calculation of the Kaon-Neutron Scattering Cross Section

Description: The purpose of this investigation was to study the scattering processes of K+ mesons with neutrons. In order to do such a study one must first make certain basic assumptions about the type of interaction involved and then proceed to calculate physically meaningful qualities which describe the processes. Thus, the problem is this: assuming the validity of Feynman's rules for these strongly interacting particles, calculate the differential and total scattering cross sections for the interaction o… more
Date: June 1966
Creator: Hooper, Robert Gibson
Partner: UNT Libraries
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Chlorine Nuclear Quadrupole Resonance Absorption of 3, 4, 5, 6 - Tetrachlorophthalimide and 1, 3, 6, 8 - Tetrachloropyrene

Description: In this study frequency modulation was used with a regenerative spectrometer and a super-regenerative spectrometer to detect the nuclear quadrupole resonance frequencies of chlorine in two commercially available compounds, 1, 3, 6, 8 - tetrachlorophyrene and 3, 4, 5, 6 - tetrachlorophthalimide.
Date: January 1968
Creator: Reeves, Jerry Byron
Partner: UNT Libraries
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A Computer Analysis of Complex Gamma-Ray Spectra

Description: The purpose of this investigation was to provide a method for determining the relative intensities of all gamma rays in a particular spectrum, and thereby determine the relative transition probabilities.
Date: August 1965
Creator: Cunningham, William K.
Partner: UNT Libraries
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Cross-Section at 15.6 and 16.1 MeV

Description: The intent of this investigation is the determination of the values of the Cs-133 (n,2n)Cs-132 cross-section at neutron energies of 15.6 and 16.1 MeV. Neutrons of this energy are produced with comparative ease by means of the D-T reaction, in which deuterons of energy 500 and 750 keV, respectively, are impingent upon a tritium target.
Date: May 1969
Creator: Pepper, George H.
Partner: UNT Libraries
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Cross Section for the 165/Ho (n, 2n) 164/Ho Reaction at 15.6 MeV

Description: It was the purpose of this investigation to bring together the ideas and procedures involved in the measurement of (n, 2n) reaction cross sections. Some of the inherent properties of the material under investigation (Holium) are involved in determining these relationships.
Date: August 1969
Creator: Lear, Richard D.
Partner: UNT Libraries
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Design and Testing of a Coincidence System

Description: This paper is concerned with the design, testing and performance of a coincidence system, the proposed North Texas State College accelerator.
Date: January 1961
Creator: Barnes, W. L., Jr.
Partner: UNT Libraries
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Design and Testing of a Corona Column and a Closed Gas Distribution System for a Tandem Van de Graaff Voltage Generator

Description: The purpose of this study had been to design and test a corona column and an insulating gas distribution system for a small tandem Van de Graaff. The intent of this paper is to describe the gas handling system and to compare experimentally the effects of corona electrode shape on the corona current carried between adjacent sections of the column.
Date: June 1962
Creator: Gray, Thomas Jack
Partner: UNT Libraries
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The Dielectric Constant of Galvinoxyl

Description: The molecules in many substances are know to undergo at characteristic temperatures a change in their rotational freedom in the solid state, signifying either a change in structure of the material of the onset of limited rotation of the molecule about some symmetry axis. The purpose of this research was to determine from dielectric constant measurements over the 100°K-420°K temperature range whether or not the organic free radical galvinoxyl and its diamagnetic parent molecule, dihydroxydipheny… more
Date: May 1968
Creator: Mizell, Michael E.
Partner: UNT Libraries
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The Diurnal Variation of Cosmic Radiation

Description: The primary purpose of this investigation was to study the diurnal variation of cosmic-ray intensity.
Date: August 1965
Creator: Fowler, Brooks C.
Partner: UNT Libraries
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Electron Transport in Bismuth at Liquid Helium Tempratures

Description: To obtain information on the band structure of bismuth, galvanomagnetic potentials were measured in a single crystal at liquid-helium and liquid-nitrogen temperatures. These measurements were analyzed for information on the different carriers, particularly for the existence of a high-mobility band of holes.
Date: May 1964
Creator: Newell, James M.
Partner: UNT Libraries
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Galvanomagnetic Determination of Energy Bands in Arsenic

Description: A study of the transport properties of a substance requires the determination of a set of transport coefficients by experiment. From these coefficients, the elements of the electrical conductivity tensor, thermoelectric tensor, et cetera can be determined. In this experiment, measurements and analyses of galvanomagnetic effects in a single crystal of arsenic were performed. The measurements were made at liquid-helium temperatures in magnetic fields ranging to 25 kilogauss. The gross isothermal,… more
Date: January 1968
Creator: Hathcox, Kyle Lee
Partner: UNT Libraries
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Galvanomagnetic Phenomena in Arsenic at Liquid Helium Temperatures

Description: The purpose of this investigation was to study some of the transport effects in a single crystal of arsenic at liquid helium temperatures in a magnetic field up to twenty-four kilogauss. The experimental coefficients determined were the isothermal magnetoresistivity and the isothermal Hall resistivity.
Date: June 1966
Creator: Yarbrough, Jack Lee
Partner: UNT Libraries
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Gamma Ray Distribution from Neutron Excitation in Cesium

Description: The purpose of this investigation was to analyze the gamma rays resulting from excitation of Cs133 by the inelastic scattering of 14 MeV neutrons and to determine the relative intensity of each gamma ray.
Date: January 1969
Creator: Bowers, Richard Morgan
Partner: UNT Libraries
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