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  Partner: UNT Libraries
 Degree Discipline: Physics
 Degree Level: Master's
 Collection: UNT Theses and Dissertations
Microwave Cavity Method for Measuring Plasma Properties

Microwave Cavity Method for Measuring Plasma Properties

Date: August 1969
Creator: Freeman, Ronald H.
Description: This discussion is concerned primarily with communications blackout during spacecraft entry into a planetary atmosphere. The gas in the shock layer, between shock wave and vehicle surface, ionizes from the intense heating which takes place in the bow shock wave and a viscous region of high gas enthalpy. This ionization may persist throughout the subsequent flow over the vehicle and into the wake, thus completely engulfing the vehicle and its communications elements. The problem will be to simulate a plasma model that will be of interest for hypervelocity reentry vehicles and to provide meaningful expressions for the various plasma parameters of interest (electron density, electron temperature, collision frequency, etc.) in terms of the microwave measurables (amplitude, phase shifts, frequency shifts, polarization, etc.)
Contributing Partner: UNT Libraries
A Vacuum Tube for an Electrostatic Generator

A Vacuum Tube for an Electrostatic Generator

Date: August 1966
Creator: Pool, John Reginald
Description: The purpose of this study has been to construct two accelerating tubes with small beam apertures for the Van de Graaff, modifying the prototype tube designed and tested by Wiley (20), to design and construct a vacuum system for evacuating the tubes, and to determine the characteristics of the tube under operating conditions while installed in the generator.
Contributing Partner: UNT Libraries
The Diurnal Variation of Cosmic Radiation

The Diurnal Variation of Cosmic Radiation

Date: August 1965
Creator: Fowler, Brooks C.
Description: The primary purpose of this investigation was to study the diurnal variation of cosmic-ray intensity.
Contributing Partner: UNT Libraries
Design and Testing of a Positive Ion Accelerator and Necessary Vacuum System

Design and Testing of a Positive Ion Accelerator and Necessary Vacuum System

Date: August 1953
Creator: McKay, Vern A.
Description: This thesis is a study of the design and testing of a positive ion accelerator and necessary vacuum system.
Contributing Partner: UNT Libraries
Electrical Conductivity in Thin Films

Electrical Conductivity in Thin Films

Date: May 1973
Creator: Meyer, Frederick Otto
Description: This thesis deals with electrical conductivity in thin films. Classical and quantum size effects in conductivity are discussed including some experimental evidence of quantum size effects. The component conductivity along the applied electric field of a thin film in a transverse magnetic field is developed in a density matrix method.
Contributing Partner: UNT Libraries
A Study of the Celestial Gamma-ray Flux

A Study of the Celestial Gamma-ray Flux

Date: June 1967
Creator: Keath, Edwin P. (Edwin Paul),1938-
Description: This thesis is a study of the celestial gamma-ray flux. It reviews several of the proposed mechanisms for producing high energy gamma rays and describes several of the attempts to detect their presence. Also included is a short historical review of the spark chamber, along with a qualitative description of its operation.
Contributing Partner: UNT Libraries
The Temperature Dependence of Magnetic Susceptibility of Galvinoxyl

The Temperature Dependence of Magnetic Susceptibility of Galvinoxyl

Date: January 1968
Creator: Martin, John R.
Description: The twofold purpose of this investigation was to design and construct an apparatus for direct magnetic susceptibility measurements as a function of temperature and to provide the complete susceptibility characterization of the free radical galvinoxyl in the room temperature-liquid nitrogen range.
Contributing Partner: UNT Libraries
Temperature Dependence of the Magnetic Susceptibility of the Organic Free Radical Galvinoxyl

Temperature Dependence of the Magnetic Susceptibility of the Organic Free Radical Galvinoxyl

Date: August 1965
Creator: Morphew, Sam W.
Description: This thesis examines temperature dependence of magnetic susceptibility of the organic free radical galvinoxyl.
Contributing Partner: UNT Libraries
Nuclear Magnetic Resonance in a Crystalline Stable Free Radical--Wurster's Blue Perchlorate

Nuclear Magnetic Resonance in a Crystalline Stable Free Radical--Wurster's Blue Perchlorate

Date: August 1965
Creator: McCann, Thomas E.
Description: This thesis investigates the nuclear magnetic resonance in a crystalline stable free radical.
Contributing Partner: UNT Libraries
The Optimum Design of a Broad-band Helix for Use in Electron Spin Resonance

The Optimum Design of a Broad-band Helix for Use in Electron Spin Resonance

Date: June 1967
Creator: Garlow, John R.
Description: This thesis examines optimum designs for broad-band helix to be used in electron spin resonance.
Contributing Partner: UNT Libraries
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