Physical Sciences and Mathematics Commons^™

"American Foreign Policy In The Atomic Age", Arthur Meier Schlesinger Jr.

Special Collections: Oregon Public Speakers

No abstract provided.

Electromagnetic Production Of Pion Pairs, Clayton D. Zerby

Doctoral Dissertations

The Pauli-Weisskopf theory of electromagnetic production of pion pairs has been a subject of interest in various connections for many years. Recently new interest has been stimulated in the theory because pion pair production is a possible means of investigating the - interaction. This approach, which was originally suggested by Pomeranchuk, is particularly valid in view of the increase in the cross section, when the strong pion-nucleus interaction is included, over that obtained by the original theory. The purpose of this work was to study the Pauli-Weiskopf theory with the objective of including the strong pion-nucleus interaction and developing an …

Muon Component Of Extensive Air Showers., Ryan Pierson Jr.

Physics & Astronomy ETDs

The purpose of this thesis is to determine how the muon component of an extensive air shower varies with the energy of the incident primary particle and different values of inelasticity and multiplicity for the nuclear interactions according to a simple theory of extensive air showers suggested by Professor Roy Thomas of the University of New Mexico. The method of attacking this problem will be to calculate the number of muons resulting from decay of pions produced in each nuclear interaction of the primary particle and from this the total number of muons passing through certain levels of the earth’s …

3rd Annual Rocky Mountain Spectroscopy Conference Abstracts Of Papers

Rocky Mountain Conference on Magnetic Resonance

Abstracts of papers presented at the 3rd annual meeting of the Rocky Mountain Spectroscopy Conference, sponsored by the Rocky Mountain Section of the Society for Applied Spectroscopy. Held in Denver, Colorado, August 8-9, 1960.

3rd Annual Rocky Mountain Spectroscopy Conference Program

Rocky Mountain Conference on Magnetic Resonance

Program from the 3rd annual meeting of the Rocky Mountain Spectroscopy Conference, sponsored by the Rocky Mountain Section of the Society for Applied Spectroscopy. Held in Denver, Colorado, August 8-9, 1960.

Measurements Of The Intensity Of Mu-Mesons In Cosmic Rays During A Period Of Unusual Solar Activity, Ronald A. Korsak

Physics & Astronomy ETDs

Because of the incomplete understanding of the processes which cosmic rays undergo in the atmosphere, there is still no generally accepted treatment of the atmospheric dependent variations of the intensity or preferred method of establishing correct coefficients.

Three-Color Photometry Of The Zodiacal Light, Alan W. Peterson

Physics & Astronomy ETDs

The major effort of the observational phase of this investigation was placed upon obtaining absolute intensity maps of the zodiacal light in three different colors. Emphasis was also placed upon measurements of polarization and upon photographing the spectrum of the zodiacal light.

Time Variations On The Cosmic-Ray Flux Near The Geomagnetic Equator, Charles L. Hyder

Physics & Astronomy ETDs

The search for an anisotrophy in the penetrating component of the cosmic-ray flux is usually carried out with narrow-angle directionally sensitive detectors located near the surface of the earth. Directional sensitivity is achieved by using a cosmic-ray telescope, consisting of Geiger counters or of scintillation counters, in a coincidence arrangement. Thus a solid angle of acceptance for the cosmic-ray particles is defined.

Pseudoscalar Interaction In Nuclear Beta Decay, Chander Perkash Bhalla

Masters Theses

In Chapter I, the statement of the problem considered in this dissertation is given: the investigation of the existence of the pseudo­ scalar interaction by the formulation of the theoretical expressions for the beta longitudinal polarization and the beta spectrum in 0 --> 0 (yes) beta transitions and by a comparison of the existing experimental data with the developed theory.

In Chapter II, we explain the reasons for the incorrectness of the conventional treatment of the pseudoscalar interaction, and then give the correct form of the operator for this interaction.

In Chapter III, using the correct form of the pseudoscalar …

Core Location Of Extensive Air Showers, James H. Jett

Physics & Astronomy ETDs

Extensive air showers have been studied as part of cosmic ray phenomenology since 1938. They are made up of electrons, photons, and many other particles which traverse the earth's atmosphere toward the earth. The showers are initiated by high energy cosmic rays. The primary cosmic rays are nuclei which have been stripped of their orbital electrons.

To this end an experiment is underway in the University of New Mexico Physics Department to determine the amount of energy transferred from the core of the shower to the electron-photon cascade. By using a detector telescope with appropriate absorber between the two detectors, …

A Movement West, Robert Katz

Robert Katz Publications

I did not discover that I had any interest in teaching or in academic life until late in my twenties, and then only through a sequence of unrelated circumstances.
I was born in 1917. My parents were Russian-Jewish immigrants who came to New York City at about the turn of the century.
At sixteen I enrolled in Brooklyn College, a recently organized, tuition-free, municipal college, then housed in rented office buildings in downtown Brooklyn. It took an hour to get to or from school on the subway. I managed to choose this inconvenient location because this school seemed most likely …

Yakir Aharonov Dissertation, Yakir Aharonov

Faculty Collections

Yakir Aharonov's Dissertation entitled "Some Problems in the Quantum Theory of Measurements."

The Fundamental Atomic Particles, Ransom Bloomer Beers

Masters Theses

No abstract provided.

An Investigation Of The Effect Of High Temperature On The Schumann-Runge Ultraviolet Absorption Continuum Of Oxygen, John Stanton Evans

Masters Theses

A theoretical and experimental investigation of the absorption coefficient of molecular oxygen at high temperature is reported here. The wavelength range covered is in the vacuum ultraviolet region from 1300 A to 1740 A. The theoretical treatment covers all temperatures from 300° to 10,000° K. The experimental investigation was carried out in the temperature range of 4,000° to 10,000° K. All values of the absorption coefficient found apply only to oxygen for which the vibrational degree of freedom is fully excited.

The final results for the high temperature absorption coefficient as a function of temperature and wavelength are listed in …

Two Proposed Experiments For The Detection Of The Dirac Monopole, Robert Katz, Darrell R. Parnell

Robert Katz Publications

A magnetic monopole may be detected by its deflection in an electric field or by the character of the ionization it produces. The electric deflection experiment may be performed in a helium bubble chamber where helical (or spiral) tracks whose axes are parallel to the D-lines would be certain evidence for the discovery of the monopole. Previous studies of the ionization have emphasized that the Bragg tail would be missing from a monopole track, as compared to a charged particle. This conclusion must be modified because of the thin-down of tracks of heavy nuclei. The tracks of heavy nuclei …

A New Grain Hardness Tester, Robert Katz, A. B. Cardwell, N. D. Collins, A. D. Hostetter

Robert Katz Publications

A hardness tester, especially adapted for grain, was constructed by modifying a commercial portable soft metal tester known as the Barcol Impressor. A preloaded stylus is forced into grain sections prepared by means of a microtome. The displacement of the stylus, measured by a dial micrometer, is used as a hardness index. This has been related to the Vickers diamond pyramid hardness which is a standard metallurgical test. A number of hardness measurements may be made on a single transverse kernel section. The tester may be used for all wheat varieties. Significant variations in hardness within a single wheat kernel …

Colorado "Rush To The Rockies Centennial" Spectroscopy Conference

Rocky Mountain Conference on Magnetic Resonance

Program from the Colorado "Rush to the Rockies Centennial" Spectroscopy Conference, sponsored by the Rocky Mountain Spectroscopy Society. Held in Denver, Colorado, August 10-11, 1959.

Effect Of Change In Moment Of Inertia On Line Intensities Of Parallel Vibration-Rotation Bands Of Symmetric Top Molecules, Gordon A. Gallup, J.L. Koenig

Gordon Gallup Publications

Effect of Change in Moment of Inertia on Line Intensities of Parallel Vibration-Rotation Bands of Symmetric Top Molecules

A Numerical Solution For Weak Disturbances In A Large Scale Hydromagnetic Field, Patrick J. Blewett

Physics & Astronomy ETDs

Our concern here will be to investigate the form of certain solutions of equation (7); we will be content with a two-dimensional analysis.

Conversion Of Electromagnetic Waves Into Magnetohydrodynamic Waves At The Interface Of A Dielectric And Incomprehensible Fluid, Ralph L. Marsten

Physics & Astronomy ETDs

Consider space to be separated into two semi-infinite regions by a rigid boundary. On one side lies medium A--a perfect, rigid, dielectric, with electric permittivity € and magnetic permeability µ. On the other side is medium B; a perfect, fluid, perfectly conducting, also with magnet permeability µ. Throughout all spaces exist a uniform static magnetic field H.

Now such a fluid as medium B is capable of supporting a magnetohydrodynamic (MHD) wave; and of course a perfect dielectric will support an electromagnetic (EM) wave. Suppose then, that a uniform plane EM wave in medium A is incident at arbitrary angle …

Method For Interpreting Extensive Air Shower Data, Darrell C. Kent

Physics & Astronomy ETDs

Three major topics are discussed in this thesis. The first of these has immediate application to analysis of air shower data which is presently being gathered by two large scintillation tanks located immediately behind the University of New Mexico physics building. The data with which the other two topics are concerned cannot be gathered with present equipment, but these preliminary calculations have been performed in anticipation of the installation of the appropriate apparatus.

A Study Of The Radioactive Decay Of The Two Isomers Of Pd109 And Of The Associated Low-Lying Levels Of Ag109, John W. Starner

Physics & Astronomy ETDs

The radiations of Pd¹⁰⁹ (13.45 ± 0.01 hr) and Pd^109m(4.69 ± 0.01 min) have been investigated with a coincidence scintillation spectrometer and a solenoidal beta-ray spectrometer. Pd^109m was observed to have only one mode of decay: a 188-kev (E3) isomeric transition to Pd¹⁰⁹. The principal beta-ray group (>99.9%) of Pd¹⁰⁹ was found to have an end-point energy of 1.025 ± 0.005 Mev. Gamma rays of the following energies (kev) and approximate intensities (photons/10⁵ disintegrations) were observed to acccmpany the decay of Pd¹⁰⁹: 773 (4), 707 (2), 643 (10), 602 …

An Experimental Method Of Determining The Shape Of Millimicrosecond Radiation Pulses, Robert Braslau

Physics & Astronomy ETDs

The problem with which this investigation is concerned was to construct suitable apparatus to measure accurately the shape and the duration of a pulse of δ-radiation of approximately 10 Mev energy and 20 mμ sec duration. In particular, the shape of the tail of the pulse had to be determined as accurately as possible, so that millimicrosecond half lives can be measured accurately with the betatron.

Characteristics And Calibration Of A Large Liquid Scintillator, James R. Barcus

Physics & Astronomy ETDs

It is the purpose of this thesis to present in some detail the method and results of the calibration -- in particular, the determination of the single particle pulse height which is crucial to any meaningful interpretation of the observational data.

Recording Of Geomagnetic Field Variations In An Orthogonal System, Chistian Schroeder

Physics & Astronomy ETDs

Magnetic field variations in both magnitude and direction are known to occur due to such phenomena as atmospheric tides and solar activity. Magnetic storms caused by solar activity may bring about variations in excess of one percent of the magnitude of the earth's normal magnetic field; but in general the changes are slight and require sensitive instruments for their measurement.

The Absolute Excitation Functions For The I 127 (N,Y) I 128 And Na 23 (N,Y) And Na 24 Reactions, Richard L. Cubitt

Physics & Astronomy ETDs

Radiative capture (n,y) cross sections, in addition to their theoretical interest, are of great practical importance to the technology of reactor design. A knowledge of the absolute excitation functions of the various materials employed in reactors permits calculation of the effect of these materials on the reactivity of a reactor, and also enables shielding calculations to be made.

Ua3/3/1 Proposed National Science Foundation Summer Institute, Ward Sumpter, Wku President's Office

WKU Archives Records

Proposal for National Science Foundation summer institute to be held at WKU during the summer of 1959.

Pulse Measurement Of The Velocity Of Light Using A Kerr Cell, Ralph Drake Mills

University of the Pacific Theses and Dissertations

The object of this research was to develop a technique that could measure the velocity of light indirectly, with some degree of accuracy; yet could be used to demonstrate the physical fact of this velocity of light to groups of students or interested observers.

A Cell-Center Distribution Function For Liquid Argon, Arthur M. Soellner

Masters Theses

"A theoretical expression for a cell-center distribution function was developed using a fundamental statistical mechanics approach. A free volume picture of the liquid was used with each atom located in a spherical cell formed by its nearest neighbors. Cell-center density distribution curves were obtained for liquid argon for temperatures of 84.4°K, 91.8°K, 126.7°K, 144.1°K, and 149.3°K and for argon gas at 149.3°K, and a comparison made with the experimental atomic distribution curves obtained by Eisenstein. For the first two temperatures a sharper, more definite structure was predicted by the cell model. For the remaining four temperatures, with the assumptions made, …

A Preliminary Search For Subionizers, Joseph B. Hughes

Masters Theses

"A number of physicists of recent years have been attempting to explain the basic nature of the universe in terms of particles. A few particles have been predicted theoretically, and some of these, along with many others have appeared experimentally, Searches for them have presented some interesting experimental problems and brought forth some invaluable experimental apparatus. One of these devices is the Wilson cloud chamber, with which this thesis is concerned.

Of the particles that have been discovered thus far, only the electron and the proton appear to be stable. The rest ultimately decay by the emission of photons and …