Interactions and Lifetimes of K Mesons (open access)

Interactions and Lifetimes of K Mesons

The following report analyzes interactions of K+ and K- mesons and measures their lifetimes using a nuclear emulsion technique.
Date: November 27, 1956
Creator: Iloff, Edwin Laurence
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Nuclear Decay Schemes of Some of the Isotopes of Tantalum (Master's Thesis) (open access)

Nuclear Decay Schemes of Some of the Isotopes of Tantalum (Master's Thesis)

This report discusses a nuclear spectroscopic study of the radiations resulting from the electron capture decay of Ta-176, Ta-177, and Ta-178, analyzing data of nuclear decay schemes.
Date: January 25, 1956
Creator: Felber, Frank Frederick, Jr.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Characteristics of a Lead-Glass Photon Spectrometer and its Use in Studying the Absorption of Photons and Antinucleons (open access)

Characteristics of a Lead-Glass Photon Spectrometer and its Use in Studying the Absorption of Photons and Antinucleons

Thesis analyzing a lead-glass photon spectrometer and its use in studying the absorption of photons and antinucleons.
Date: December 12, 1956
Creator: Brabant, John Michael
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Excitation Functions for Reactions of Bev Protons on Indium (Master's Thesis) (open access)

Excitation Functions for Reactions of Bev Protons on Indium (Master's Thesis)

Abstract: "Indium was bombarded with protons in the energy range 2 to 6 Bev. Cross sections are reported for the (p,px+), (p,pn), and (p,p') reactions, as well as those for the formation of Be-7 and several neutron deficient isotopes of cadmium and indium. It was found that the (p,pn) yield increases slowly in the energy range 2 to 6 Bev, while the (p,px+) and (p,p') yields are approximately constant. The variation of the (p,pn) and (p,px+) yields with target thickness is discussed. The yields of several isomeric levels are correlated with their nuclear spin."
Date: January 1957
Creator: Nethaway, David Robert
Object Type: Report
System: The UNT Digital Library
Off-Gas Treatment in Berkeley Enclosures (open access)

Off-Gas Treatment in Berkeley Enclosures

"In the past ten years quantities of alpha-, beta-, gamma- and neutron-emitting isotopes handled in enclosures have increased from microcuries to kilocuries. Contaminated-atmosphere problems have increased accordingly. Developments at Berkeley are reviewed with particular emphasis on recent equipment, viz: a multiple-purpose gas scrubber and a total-capture system for slug-dissolver off gas."
Date: January 7, 1957
Creator: Thaxter, M. D.; Cantelow, H. P. & Burk, C.
Object Type: Report
System: The UNT Digital Library
The Method of Moments in Quantum Mechanics ; The [Pi]-Mesic Disintegration of the Deuteron (open access)

The Method of Moments in Quantum Mechanics ; The [Pi]-Mesic Disintegration of the Deuteron

The following report contains two reports to summarize a thesis: first, a report describing the classical moment techniques of Tchebycheff, Markov, and Stieltjes that have been applied to the problem of diagonalizing the Hamiltonian operator; and the second report describes an investigation of the higher-order corrections to the mesic disintegration of deuterons that is considered.
Date: March 18, 1957
Creator: Halpern, Francis R.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
The Electrical Design of a Heavy-Ion Accelerator (open access)

The Electrical Design of a Heavy-Ion Accelerator

The following report provides the design and workings of a heavy-ion accelerator designed to accelerate particles of atomic weight 12 through 20.
Date: August 20, 1957
Creator: Voelker, Ferdinand
Object Type: Report
System: The UNT Digital Library
Factors Influening Ammonia Decomposition in the Kjeldahl Method with Sealed Tube Digestion (open access)

Factors Influening Ammonia Decomposition in the Kjeldahl Method with Sealed Tube Digestion

This report follows the work on the Kjedahl digestion procedure in sealed tubes at 470 C. as well as analyzing factors influencing ammonia decomposition within these tubes.
Date: June 1954
Creator: Green, LeRoy G.; Koch, Charles William; Grunbaum, Benjamin W. & Kirk, Paul Leland, {}
Object Type: Report
System: The UNT Digital Library
Neutron Production by High-Energy Particles (open access)

Neutron Production by High-Energy Particles

Abstract: "From neutron-yield measurements made with a MnSO4 detecting solution, the average number of neutrons produced per inelastic event is determined for a series of elements from lithium to uranium for 340-Mev protons, 190-and 315-Mev deuterons, 490-Mev He3 ions, and 90- and 160-Mev neutrons. The results are analyzed in an attempt to understand the total yield measurements for thick targets and to explain the variation of yield with the atomic number of the target."
Date: September 29, 1954
Creator: Crandall, Walter E. & Millburn, George P.
Object Type: Report
System: The UNT Digital Library
Use of Controlled Photosynthesis for Maintenance of Gaseous Environment (open access)

Use of Controlled Photosynthesis for Maintenance of Gaseous Environment

Abstract: "The problem of maintaining livable oxygen and carbon dioxide pressures in a closed space in which men must live leads to consideration of the possible use of the photosynthesis of green algae. A calculation based on the known respiratory rate of man and the photosynthetic rates of Chlorella indicates that it would be feasible to use algae for this purpose."
Date: September 1954
Creator: Bassham, James Alan
Object Type: Report
System: The UNT Digital Library
Effects of Ionizing Radiation on Choline Chloride and Its Analogs (open access)

Effects of Ionizing Radiation on Choline Chloride and Its Analogs

Abstract: "Choline chloride and six analogs have been exposed in the dry, crystalline state to high-energy electron and gamma radiation. This investigation has confirmation the abnormal radiation sensitivity of choline chloride. Its G values (molecules decomposed/100 ev) were found to be: e- -radiation, 20; y-radiation, 175. These high values indicate a chain mechanism for the solid-state reaction. The G values for the choline analogs were found to range from 1 to 18 for the electron irradiations and from 1 to 32 for the gamma irradiations. Betaine hydrochloride approaches choline chloride in instability toward high-energy electrons but is far more stable in the presence of y-rays."
Date: December 1954
Creator: Lemmon, Richard M.; Parsons, Margaret A. & Chin, Doris M.
Object Type: Report
System: The UNT Digital Library
Focusing in Linear Ion Accelerators (open access)

Focusing in Linear Ion Accelerators

Abstract: "The results of the investigation of three methods of obtaining transverse stability in linear accelerators for ions are presented and discussed. For electric or magnetic quadrupole focusing the range of stable operation, oscillation amplitudes, and the operation of an actual grid is analyzed from measurements of the field distribution. Finally, the formulas applicable to focusing by axial magnetic lenses are presented."
Date: November 24, 1954
Creator: Smith, Lloyd & Gluckstern, Robert L.
Object Type: Report
System: The UNT Digital Library
High Pressure Low Resistance Joint (open access)

High Pressure Low Resistance Joint

The following report describes the usage of tin-foil to obtain a mechanical joint of low electrical resistance while providing a seal to hold water at a pressure of 300 psi.
Date: March 28, 1955
Creator: Peters, Ralph
Object Type: Report
System: The UNT Digital Library
A Numerical Method for Two-Dimensional Lagrangian Hydrodynamics (open access)

A Numerical Method for Two-Dimensional Lagrangian Hydrodynamics

Abstract: "A completely Lagrangian scheme for differencing hydrodynamical equations in two dimensions is described. The method conserves mass exactly. The advantages of Lagrangian over Eulerian schemes are briefly mentioned. An appendix gives the generalization to three dimensions."
Date: December 10, 1953
Creator: DeWitt, Bryce S.
Object Type: Report
System: The UNT Digital Library
High Energy Fission and Spallation of Uranium (open access)

High Energy Fission and Spallation of Uranium

From introduction: "This report is an attempt to examine, semiquantitavely, the way the competition between neutron emission and fission varies for heavy nuclei as a function of nuclear type and excitation energy. Many of the ideas herein are the results of discussions with R. H. Goeckermann and W. Heckrotte of the University of California Radiation Laboratory."
Date: February 25, 1954
Creator: Batzel, Roger Elwood
Object Type: Report
System: The UNT Digital Library
Acceleration of a Plasma by Time-Varying Magnetic Fields (open access)

Acceleration of a Plasma by Time-Varying Magnetic Fields

Abstract: An application of the magnetic mirror principle to the acceleration of a plasma is described. It is shown that an axially symmetric magnetic field which increases with time but decreases with distance along the axis can impart a net translational energy to a plasma. This effect on a plasma is contrasted with that arising from an impressed electric field, which is not effective in producing acceleration.
Date: December 6, 1954
Creator: Post, Richard F.
Object Type: Report
System: The UNT Digital Library
Measurement of the Behavior of a Plasma in a Magnetic Field by Means of Probes (open access)

Measurement of the Behavior of a Plasma in a Magnetic Field by Means of Probes

Abstract: "Probes were used to measure certain properties of the cloud of positive ions and electrons ejected from a pulsed ion source having two hydrogen-loaded electrodes. Time-of-flight measurements show: the presence of H+ ions with 50 ev directed energy; an increase of this energy with increasing pulse current in the source; a higher peak yield of ions with higher peak currents in the source; and higher yields and higher ion energies up to 110 ev have been recorded with the use of a pulsed magnetic field impressed upon the source. The neutral positive ion-electron beam from the source has been projected against an increasing magnetic field and the reflected and transmitted signals have been recorded and compared as a function of the magnetic field. Probe signals from the plasma as it encounters the magnetic field are oscillatory, suggesting that magnetohydrodynamic phenomena are presented."
Date: December 1, 1954
Creator: Bostick, W. H.; Zizzo, S. G. & Cook, Buford
Object Type: Report
System: The UNT Digital Library
Use of Thermal Electromotive Forces to Product Magnetic Field in a Controlled Thermonuclear Reactor (open access)

Use of Thermal Electromotive Forces to Product Magnetic Field in a Controlled Thermonuclear Reactor

The following report investigates the possible use of thermal emf's to produce the plasma-containing magnetic field in a thermonuclear reactor.
Date: December 27, 1954
Creator: Northrop, Theodore G.
Object Type: Report
System: The UNT Digital Library
An "Exact" Analysis of a Cylindrical Plasma in a Magnetic Field (open access)

An "Exact" Analysis of a Cylindrical Plasma in a Magnetic Field

Abstract: "The analysis of an immobilized plasma is here extended to the case where the geometry is cylindrical rather than Cartesian. (This report, UCRL-4439 (Rev, 4 constitutes Part II of the report series (UCRL-4466, Parts I, III, and IV) dealing with this general problem.)"
Date: January 14, 1955
Creator: Tonks, Lewi, 1897-1971
Object Type: Report
System: The UNT Digital Library
The Elimination of Microwave Reflections (open access)

The Elimination of Microwave Reflections

Abstract: "The reflections of microwaves from the walls of a plasma-containing vessel are studied. The probable cause of the reflections is discussed, and several suggestions are made for eliminating the reflections from the waveguide in the vessel and particularly from the pyrex vessel wall and copper tubing surrounding the pyrex. Quarter-wave-thick carbon-filled plastics or glasses having a very low vapor pressure room most promising when placed inside the pyrex cylinder. BaTiO3 appears to be an excellent material when placed outside the vacuum."
Date: February 1, 1955
Creator: Beard, David
Object Type: Report
System: The UNT Digital Library
Effect of a Decelerating Grid on Current from an Ion Source (open access)

Effect of a Decelerating Grid on Current from an Ion Source

Abstract: "A theoretical criterion is given for the conditions under which the ions from an ion source may be decelerated by a decelerating grid, following the accelerating grid which extracts ions from the emitter, without causing a reduction in the current supplied by the source."
Date: February 23, 1955
Creator: Bing, George F., 1924-; Gardner, C. S. & Northrop, Theodore G.
Object Type: Report
System: The UNT Digital Library
Linear Accelerator for Heavy Ions (open access)

Linear Accelerator for Heavy Ions

The following report discusses the construction of two heavy-ion linear accelerators, one at the the University of California Radiation Laboratory and the other at Yale University. The goal for these accelerators is to produce ions of masses up to that of neon with energies of 10 Mev per nucleon.
Date: March 27, 1959
Creator: Wells, Don
Object Type: Report
System: The UNT Digital Library
The Masses of Identified Positive Heavy Mesons (open access)

The Masses of Identified Positive Heavy Mesons

The following report describes the charged secondary particles from all presently known decay modes of positive K mesons that have been identified, and the masses of the primaries measured by the momentum-range method.
Date: April 5, 1956
Creator: Peterson, James Ray
Object Type: Thesis or Dissertation
System: The UNT Digital Library
The Bevatron and its Place in Nuclear Physics (open access)

The Bevatron and its Place in Nuclear Physics

From page 2: "This article first describes the Bevatron [particle accelerator] and its operation, and then discusses a portion of the research program. The principles of the machine and its early history were given in "The Bevatron," by Lloyd Smith, Scientific American, February 1951."
Date: April 6, 1956
Creator: Lofgren, E. J.
Object Type: Report
System: The UNT Digital Library