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Articles 151 - 180 of 273
Full-Text Articles in Physics
Small Angle Elastic Scattering Of 1.33 Mev Photons From Lead, Chwan-Kang Chiang
Small Angle Elastic Scattering Of 1.33 Mev Photons From Lead, Chwan-Kang Chiang
Masters Theses
No abstract provided.
Elastic Scattering Of 1.33 Mev Gamma Rays From Uranium, Joan Sue De Vries
Elastic Scattering Of 1.33 Mev Gamma Rays From Uranium, Joan Sue De Vries
Masters Theses
No abstract provided.
A Study Of Defects In Platinum Using Positron Annihilation, Clarence D. Esseltine
A Study Of Defects In Platinum Using Positron Annihilation, Clarence D. Esseltine
Masters Theses
No abstract provided.
A Direct Measurement Of The Ratio Of The Reaction Cross Sections For Two-Photon And Three-Photon Annihilation Of A Positron And An Electron In Aluminum, Jeffrey Ira Siegel
A Direct Measurement Of The Ratio Of The Reaction Cross Sections For Two-Photon And Three-Photon Annihilation Of A Positron And An Electron In Aluminum, Jeffrey Ira Siegel
Masters Theses
No abstract provided.
Application Of The Weiss Molecular Field Theory To The Lattice Of The B-Site Spinel, Wayne Edmund Holland
Application Of The Weiss Molecular Field Theory To The Lattice Of The B-Site Spinel, Wayne Edmund Holland
Masters Theses
"The Weiss molecular field theory has been applied to the lattice of the B-site spinel. The forms of the ordering temperatures and the asymptotic Curie temperature have been determined for a sixteen-sublattice model with collinear spins. The theory has been applied to the problem of determining the exchange integrals for systems of the form Aa₁₋ₓAbₓCr₂X₄ and ACr₂Xa4(1-y)Xb4y. The theoretical results have been compared to the experimental data for the systems Hg₁₋ₓCdₓCr₂S₄, Zn₁₋ₓCdₓCr₂Se₄, and CdCr₂S4(1-y)Se4y in an attempt to determine the exchange integrals"--Abstract, page ii.
A Study Of Some Matrix Elements For The Four-Pion Decay Mode Of Neutral Bosons, George Victor Weller
A Study Of Some Matrix Elements For The Four-Pion Decay Mode Of Neutral Bosons, George Victor Weller
Masters Theses
No abstract provided.
The Elastic Scattering Of 1.33 Mev Gamma Rays From Tin, J. Edward Terdal
The Elastic Scattering Of 1.33 Mev Gamma Rays From Tin, J. Edward Terdal
Masters Theses
No abstract provided.
Inelastic Deuteron Scattering From 151Eu, Gerald Ralph Boss
Inelastic Deuteron Scattering From 151Eu, Gerald Ralph Boss
Masters Theses
No abstract provided.
The Mossbauer Effect In Ferric Stearate And Ferric Oleate, Ronald L. Wilson
The Mossbauer Effect In Ferric Stearate And Ferric Oleate, Ronald L. Wilson
Masters Theses
No abstract provided.
Angular Correlation Of Positron Annihilation Radiation In Damaged Nickel And Iron, Hsien Chen Huang
Angular Correlation Of Positron Annihilation Radiation In Damaged Nickel And Iron, Hsien Chen Huang
Masters Theses
No abstract provided.
Fabrication Of Lithium Drifted Germanium Detectors Of Planar Structures, Khin M. Yin
Fabrication Of Lithium Drifted Germanium Detectors Of Planar Structures, Khin M. Yin
Masters Theses
No abstract provided.
Elastic Scattering Of 1.33 Mev Gamma Rays From Lead, William Jack Merrow
Elastic Scattering Of 1.33 Mev Gamma Rays From Lead, William Jack Merrow
Masters Theses
No abstract provided.
Elastic Scattering Of 1.33 Mev Gamma Rays From Uranium, David Rood Schwandt
Elastic Scattering Of 1.33 Mev Gamma Rays From Uranium, David Rood Schwandt
Masters Theses
No abstract provided.
Infrared Cooling Near Atmospheric Temperature Inversions And Absorber Concentration Variations, Joey Keith Tuttle
Infrared Cooling Near Atmospheric Temperature Inversions And Absorber Concentration Variations, Joey Keith Tuttle
Masters Theses
"Cooling due to infrared radiation near temperature inversions is investigated. Temperature inversions tend to hold pollution below the inversion level. The pollution itself may contribute to the stability of the inversion by selectively cooling certain portions of the atmosphere. A method is developed for evaluating infrared cooling rates at discreet points in the atmosphere. Several sample calculations are given to demonstrate the effects of variations of absorber concentration and lapse rate"--Abstract, page i.
An Experimental Comparison Of Various Nuclei Counters, Joel William Mansell
An Experimental Comparison Of Various Nuclei Counters, Joel William Mansell
Masters Theses
"A series of simultaneous nuclei concentration measurements, with four different nuclei counters, have been made. these counters were a Pollak and a Gardner counter supplied by Mr. Paul Allee of the Environmental Science Services Administration, Boulder, Colorado, and a Pollak and a G.E. counter supplied; by Mr. Norman White of the National Center for Air Pollution Control, Cincinnati, Ohio. In the absence of any knowledge of the absolute concentrations in the samples, the data for each of the individual counters have been compared to the averages computed from all four counters. The results of these comparisons indicate the following: (1) …
A Low Frequency Phase Shift Method, Ronnie Carroll Mcmillan
A Low Frequency Phase Shift Method, Ronnie Carroll Mcmillan
Masters Theses
"The phase shift method of measuring atomic lifetimes is particularly useful because it allows us to make measurements in the steady state mode instead of in the transient mode. High frequency phase shift techniques cause many problems. The equipment, which was designed and built to make low frequency phase shift techniques possible, is shown schematically and discussed. The new experimental techniques employed in our apparatus are a phase multiplier and a unique method of using a photomultiplier as a mixer. In the photomultiplier the final dynode is used as the grid of a triode. The next to the last dynode …
A Study Of The Evaporation Rates Of Small Freely Falling Water Droplets, Hugh Alan Duguid
A Study Of The Evaporation Rates Of Small Freely Falling Water Droplets, Hugh Alan Duguid
Masters Theses
"The evaporation rates of small (radium 3-9µ), freely falling water droplets were determined. the droplets, produced in a diffusion cloud chamber, were allowed to fall through air of known relative humidity (95-100%) and at three ambient temperatures (25C, 30C, and 35C) in a vertical drift tube. the rates of evaporation were ascertained by recording the drop positions on film at fixed time intervals. The results are compared with several existing theories, and are found to lie between the formulation of Kinzer and Gunn, and the quasistationary theory based on Maxwell's equation"--Abstract, page ii.
The Construction Of A Portable Hologram Camera, Michael Bruce Elzinga
The Construction Of A Portable Hologram Camera, Michael Bruce Elzinga
Masters Theses
No abstract provided.
A Study Of The 16.7 Mev Level Of The 5He, James David George
A Study Of The 16.7 Mev Level Of The 5He, James David George
Masters Theses
No abstract provided.
Numerical Evaluations Of The Virial Integrals, Li-Hwa Lee
Numerical Evaluations Of The Virial Integrals, Li-Hwa Lee
Masters Theses
No abstract provided.
Mössbauer Studies Of Impurity Tin Atoms In Indium, Richard L. Smith
Mössbauer Studies Of Impurity Tin Atoms In Indium, Richard L. Smith
Masters Theses
No abstract provided.
Positron Annihilation In Single Crystal Zinc At 250 Degrees Centigrade, Jon Wayne Swanson
Positron Annihilation In Single Crystal Zinc At 250 Degrees Centigrade, Jon Wayne Swanson
Masters Theses
No abstract provided.
Angular Correlation Study Of The 105 Kev Level In Gd155, John B. Gouvas
Angular Correlation Study Of The 105 Kev Level In Gd155, John B. Gouvas
Masters Theses
No abstract provided.
A Study Of Bismuth Ferrate And Bismuth Manganate In Solid Solution With Lead Titanate, Harris C. Jones
A Study Of Bismuth Ferrate And Bismuth Manganate In Solid Solution With Lead Titanate, Harris C. Jones
Masters Theses
"A new sample holder for measuring the high frequency dielectric constant of ferroelectrics at high temperature was constructed. The new sample holder eliminated discontinuities in the slotted line and improved the electrical contact between the ceramic and brass components. Measurements of the high frequency dielectric constant of an aged sample of 90% BiFeO₃ - 10% PbTiO₃ were made as a function of temperature using the slotted line technique. The dissipation function for the aged sample was found to have a more normal behavior near the Curie point than the virgin samples previously measured. Resistivity measurements were made as a function …
Absolute Specification Of X-Ray Spectra By Laplace Transform Analysis Of Attenuation Data, Gerald Robert Lusk
Absolute Specification Of X-Ray Spectra By Laplace Transform Analysis Of Attenuation Data, Gerald Robert Lusk
Masters Theses
"A well characterized, variable plate separation ion chamber was utilized as a detector to collect x-ray attenuation data for generating information on the Laplace transform predicted spectrum of a 50 KvCP conventional x-ray tube. The variable plate separation feature allows one to include a wavelength dependent correction to the detector response which is associated with the hardening of the x-ray spectrum as it traverses the attenuating material. With this correction, the conventional two-term Laplace transform was shown to approximate independently the bremsstrahlung and characteristic L radiation from the tungsten target. The detector provides an absolute statement of the target-referenced x-ray …
A Study Of Bifeo₃ And The Hall Effect In Bifeo₃ And Cds, Fred Hoerger Taylor
A Study Of Bifeo₃ And The Hall Effect In Bifeo₃ And Cds, Fred Hoerger Taylor
Masters Theses
"Pure samples of BiFeO₃ were heat treated in oxygen and nitrogen atmospheres in an attempt to reduce the conductivity of the samples. Dielectric constant and dissipation factor measurements, as a function of frequency, were made to determine whether the samples had been altered. A special high temperature Hall effect apparatus was constructed. Using this apparatus an upper limit for the Hall mobility in BiFeO₃ was established. The apparatus was also used for room temperature measurements of Ga-doped CdS samples. Resistivity measurements to be used with the Hall effect results were made on both the BiFeO₃ and the CdS samples. Hot-Point …
Electronic Transitions In Diatomic Molecules, James O. Hornkohl
Electronic Transitions In Diatomic Molecules, James O. Hornkohl
Masters Theses
"The electronic transition moments of many band systems have been found to be linear functions of the internuclear distance. However, some band systems exhibit a quadratic variation of the transition moment. In these quadratic cases, the plots from which the variation of the transition moment is determined are based upon the approximation of the second r-centroid by the square of the first r-centroid. The square of the first r-centroid does closely approximate the second r-centroid by a simple error analysis shows that the small difference between the two is not a quantitative measure of the error introduced into the transition …
Infrared Related Solid State Studies, Donald George Rathbun
Infrared Related Solid State Studies, Donald George Rathbun
Masters Theses
"Infrared reflectivity measurements have been made on single crystal CdS. Classical dispersion analysis has been used in an analysis of the data to obtain the index of refraction, the extinction index, and the dispersion parameters. These are compared with previously published results. The procedure used in this analysis has been outlined for future reference. Also, the shallow donor impurity theory has been used to numerically calculate the d±1 levels for Si and Ge. The theory is extended for the case of the impurity in the bulk semiconductor and the d₀, d±2 and, for high n, the s, p₀, …
Measurement Of Ultrasonic Absorption In Liquids By A Thermal Method, Ronald J. Tanis
Measurement Of Ultrasonic Absorption In Liquids By A Thermal Method, Ronald J. Tanis
Masters Theses
No abstract provided.
An Investigation Of The Refractive Index Of Selected Liquids In The Ultraviolet, Robert Bruce Eaton
An Investigation Of The Refractive Index Of Selected Liquids In The Ultraviolet, Robert Bruce Eaton
Masters Theses
No abstract provided.