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  Partner: UNT Libraries
 Department: Department of Physics
 Collection: UNT Theses and Dissertations
A Precision Angular Correlation Table and Calculation of Geometrical Correction Factors

A Precision Angular Correlation Table and Calculation of Geometrical Correction Factors

Date: January 1970
Creator: Rowton, Larry James
Description: In recent years y-y angular correlations have been very useful in confirming the spins of excited nuclear states. Angular correlation techniques have also been employed to study the electric and magnetic character of excited nuclear states. With these things in mind, it was decided to design, construct, and test a precision angular correlation table.
Contributing Partner: UNT Libraries
Cs133 (n,2n) Cross-Section at 15.6 and 16.1 MeV

Cs133 (n,2n) Cross-Section at 15.6 and 16.1 MeV

Date: May 1969
Creator: Pepper, George H.
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.
Contributing Partner: UNT Libraries
Cross Section for the 165/Ho (n, 2n) 164/Ho Reaction at 15.6 MeV

Cross Section for the 165/Ho (n, 2n) 164/Ho Reaction at 15.6 MeV

Date: August 1969
Creator: Lear, Richard D.
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.
Contributing Partner: UNT Libraries
Magnetomorphic Oscillations in Cadmium Cylinders

Magnetomorphic Oscillations in Cadmium Cylinders

Date: August 1969
Creator: Hight, Ralph D.
Description: The work presented here is an experimental investigation of the effect of cylindrical geometry on electrical conductivity, in which single-crystal samples of cadmium at the temperature of liquid helium are used, with the diameter on the order of the electron mean free path.
Contributing Partner: UNT Libraries
Electron Spin Resonance Absorption in Benzophenone Phenylhydrazone Negative Ion

Electron Spin Resonance Absorption in Benzophenone Phenylhydrazone Negative Ion

Date: August 1969
Creator: Oral, Burhanettin
Description: This thesis reports an electron spin resonance absorption study of the hyperfine interaction between nuclei and a single "nearly-free" electron in dilute solutions of the benzophenone phenylhydrazone free radical in tetrahydrofuran.
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Temperature Dependence of Line Widths of the Inversion Spectra of Ammonia

Temperature Dependence of Line Widths of the Inversion Spectra of Ammonia

Date: August 1969
Creator: Cook, Charles E.
Description: One of the purposes of this work is to investigate modifications that have to be made to a standard source-modulation microwave spectrograph so that it can be used to study gases at various temperatures. Another objective in this work is to determine experimentally the function of temperature that describes how the line widths of microwave spectral lines vary with changing temperature. The most important segment of the study is the temperature dependence of the line width since from an accurate knowledge of this temperature dependence one is able to determine what molecular force fields are present and the relative importance of parts of the molecular force field.
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A Correction Factor for the First Born Approximation

A Correction Factor for the First Born Approximation

Date: January 1965
Creator: Russell, Jerry Brent
Description: This thesis looks at a Schroedinger equation and the Born approximation.
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Electron Transport in Bismuth at Liquid Helium Tempratures

Electron Transport in Bismuth at Liquid Helium Tempratures

Date: May 1964
Creator: Newell, James M.
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.
Contributing Partner: UNT Libraries
Galvanomagnetic Determination of Energy Bands in Arsenic

Galvanomagnetic Determination of Energy Bands in Arsenic

Date: January 1968
Creator: Hathcox, Kyle Lee
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, electrical conductivities have been analyzed to determine various parameters characterizing the energy bands in arsenic.
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Neutron Density Depression Due to an Oblate Spheroidal Detector

Neutron Density Depression Due to an Oblate Spheroidal Detector

Date: January 1954
Creator: Trammell, Margaret Ruth
Description: In this paper, two projects have been undertaken. First, Workman's calculations have been checked to a higher degree of approximation to determine the accuracy of his method. Second, a new set of boundary conditions has been developed for obtaining solutions of the neutron diffusion equation which do not depend on the solution of the equation inside the detector.
Contributing Partner: UNT Libraries