Physical Sciences and Mathematics Commons^™

Density Of States And Conductivity Of Metal Alloys, Hsing-Chow Hwang

Dissertations, Theses, and Masters Projects

No abstract provided.

Improved Calculations Of The Complex Dielectric Constant Of Semiconductors, Roger Allen Breckenridge

Dissertations, Theses, and Masters Projects

No abstract provided.

Precession Of Positive Muons In Nickel, Mary Louis Grayson Foy

Dissertations, Theses, and Masters Projects

No abstract provided.

Nmr Detection Of Ionized Arsenic Vacancy Production In Gallium Arsenide, Richard K. Hester

Dissertations, Theses, and Masters Projects

No abstract provided.

Nuclear Magnetic Resonance In The Amorphous Transition Metal Vzr Alloy, Kwang Soo Han

Dissertations, Theses, and Masters Projects

No abstract provided.

Evidence For The Existence Of Two Stable Sites For Cobalt Impurity Atoms In Aluminum, Arun Venkatachar

Dissertations and Theses

Using Fe⁵⁷Mössbauer spectroscopy, two alternative sites occupied by cobalt (10^-4 at. % ) impurity atoms in aluminum have been isolated. The substitutional site A is the stable position after annealing the sample above 840 K, followed by a rapid quench. The impurity atoms in site A are characterized by a single line Mössbauer spectrum (indicative of a cubic environment), a room-temperature f = 0.502 (r. m. s. displ. 0.071 A) and an I. S. (reI. to Fe) = -0.421 mm/sec. For anneals below 770 K the cobalt atoms migrate to site B, which is characterized by a …

An Investigation Of The Temperature Dependence Of The Electrical Resistivity Of Concentrated Strong-Scattering Alloys, An-Ban. Chen

Dissertations, Theses, and Masters Projects

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

Masters Theses

No abstract provided.

Antimatter, Claudia Morgan Griffin

Honors Theses

Very little is known about the mysterious world of antimatter. The idea that such particles could exist was not even proposed until forty years ago. Perhaps the story of the discovery of antimatter began when scientists were trying to unify the Theory of Relativity and the Theory of Quanta. The trouble was that the quantities in the classical wave equation are in the second derivatives. In Schrodinger's wave equation of the Quantum Theory, x, y, and z are second derivatives, but i is a first derivative.

Following Einstein's basic ideas, H. Minkowski proposed the concept of a four-dimensional time-space continuum …

Positron Annihilation In Single Crystal Zinc At 250 Degrees Centigrade, Jon Wayne Swanson

Masters Theses

No abstract provided.

Proton-Produced Defects In N-Type Silicon, Roger Allen Breckenridge

Dissertations, Theses, and Masters Projects

No abstract provided.

A Search For Defect Energy Levels Produced In Czochralski Grown Silicon Irradicated With 22 Mev Protons, Using Infrared Absorption Techniques, Gerald Franklin Hill

Dissertations, Theses, and Masters Projects

No abstract provided.

Electron Paramagnetic Resonance Studies Of A Radiation-Induced Defect Center In Anthracene Crystals, Emmitt O. Wright

Dissertations, Theses, and Masters Projects

No abstract provided.

Optical And Electron-Paramagnetic Resonance Studies Of Sodium-Fluoride, Ronald Allen Andrews

Wayne State University Dissertations

No abstract provided.

Changes In Minority Carrier Lifetime In Silicon And Gallium Arsenide Resulting From Irradiations With 22- And 40-Mev Protons, Marvin E. Beatty

Dissertations, Theses, and Masters Projects

No abstract provided.

Hemispherical Spectral Emittance Of Ablation Chars, Carbon, And Zirconia To 3,700 Degrees K, Robert Gale Wilson

Dissertations, Theses, and Masters Projects

No abstract provided.

A Study Of The Al27 (D,P) Al28 Reaction, Richard Heath Parker

Dissertations, Theses, and Masters Projects

No abstract provided.

Self‐Consistent Electronic Structure Of Disordered Fe0.65ni0.35, Duane D. Johnson, F. J. Pinski, G. M. Stocks

Duane D. Johnson

We present the results of the first a b i n i t i o calculation of the electronic structure of the disordered alloy Fe0.65Ni0.35. The calculation is based on the multiple‐scattering coherent‐potential approach (KKR‐CPA) and is fully self‐consistent and spin polarized. Magnetic effects are included within local‐spin‐density functional theory using the exchange‐correlation function of Vosko–Wilk–Nusair. The most striking feature of the calculation is that electrons of different spins experience different degrees of disorder. The minority spin electrons see a very large disorder, whereas the majority spin electrons see little disorder. Consequently, the minority spin density of states is smooth …