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
System: The UNT Digital Library
Absolute Cross Sections for Secondary Particles Produced in High-Energy Nuclear Bombardments (open access)

Absolute Cross Sections for Secondary Particles Produced in High-Energy Nuclear Bombardments

From abstract: Absolute cross sections for the production of charged secondary particles is the bombardments of aluminum, nickel, silver, and gold by 332-Mev protons, 187-deuterons, and 380-Mev alpha particles have been determined.
Date: April 20, 1956
Creator: Bailey, L. Evan
System: The UNT Digital Library
Energy Transfer Between Modified Maxwell Distributions (open access)

Energy Transfer Between Modified Maxwell Distributions

Abstract: "A particularly conventional modified form of Maxwell distribution is chosen. The modified expressions for (a) the energy transfer from the ions to the electrons in a plasma and (b) the brehmestrahlung from the electrons are calculated. Using the expressions some possible steady-state conditions for the ion and electron gases are derived and compared with those for the usual Maxwell distributions."
Date: September 20, 1956
Creator: Greyber, Howard D. & Bing, G.
System: The UNT Digital Library
Shock-Tube Experiments at University of Oklahoma and Cornell University (open access)

Shock-Tube Experiments at University of Oklahoma and Cornell University

Abstract: "The shock-tube experiments of Professor R. G. Fowler and his co-workers at the University of Oklahoma, and of Professor Arthur Kantrowits and his group at Cornell University, are reported by the author, who visited the laboratories of the two groups. Fowler's group has studied expanding low-pressure sparks; Kantrowits and his group have studied shocks produced by the adiabatic expansion of a compressed gas."
Date: May 20, 1955
Creator: Huber, Elsa L.
System: The UNT Digital Library
Energy-Dependent Albedo (open access)

Energy-Dependent Albedo

From abstract: "Within the framework of age theory an expression is developed which represents the probability of a neutron being reflected with an energy loss corresponding to age, v, as a function of reflector thickness."
Date: September 20, 1954
Creator: Drummond, William E.
System: The UNT Digital Library
Some Aspects of High Temperature Plasma Research With the Mirror Machine (open access)

Some Aspects of High Temperature Plasma Research With the Mirror Machine

Report discussing part of a study that aims to understand plasma stability and confinement in mirror geometries.
Date: January 20, 1960
Creator: Post, Richard F.
System: The UNT Digital Library
A Bibliography on Factors Effecting the Motion of the Artificial Earth Satellite (open access)

A Bibliography on Factors Effecting the Motion of the Artificial Earth Satellite

"This bibliography is a list of references pertaining to factors affecting the motion of the artificial earth satellite. References are foreign and domestic literature."
Date: May 20, 1958
Creator: Frost, Frederick E.
System: The UNT Digital Library
Analysis of Six-Bar Linkage Using Digital Computer (open access)

Analysis of Six-Bar Linkage Using Digital Computer

Summary. The analysis of the motion of a six-bar linkage is difficult because of the large number of variables involved and the large number of calculations that have to be made for each position of the linkage. If a digital computer is used to make the calculations required for a multi-position analysis of a mechanism, it is feasible to design by analyzing a large numbers of similar linkages and selecting the optimum configuration. In this paper expressions have been derived for the output angle as a function of the input angle and the transmission angle as a function of the input angle for any single-degree-of-freedom six-bar linkage for which the parameters are known An example showing the usefulness of a six-bar computer program as a mechanism design tool is discussed.
Date: May 20, 1960
Creator: Dunk, A. C. & Hanson, C. L.
System: The UNT Digital Library
Effect of Layering Above a Refractor on the Character of the Refraction Arrival (open access)

Effect of Layering Above a Refractor on the Character of the Refraction Arrival

Abstract. The waveform or character of a refraction arrival has become internationally important because of its use in determining source parameters. An approximate theoretical machine calculation has been made to show the effect of layering above a refractor on the character of the refraction arrival. The method is illustrated with a geologic model taken from the Edwards Plateau area of West Texas. The effect of the Edwards limestone, Comanche, and Trinity formations on the refraction from the Pennsylvanian limestone is computed. The conversion of energy in theses upper layers from compressional to shear plays a significant role in forming the refraction character. An anticlinal structure is introduced into the Pennsylvanian limestone and it is argued that, in a first approximation, the wave in the Pennsylvanian limestone follow the structure, refracting off at the critical angle as before. Now, however, the angle of incidence on the base of the Trinity is a function of the angle of the structure. Since the amplitudes of converted waves depends n this angle, The character of the refraction arrival depends in a predictable way on the angle in the structure where the critical refraction has taken lace. These results are theoretical and only approximate, but …
Date: September 20, 1960
Creator: Werth, Glenn C.
System: The UNT Digital Library
A Study of Heat and Mass Transfer to Uninsulated Liquid Oxygen Containers (open access)

A Study of Heat and Mass Transfer to Uninsulated Liquid Oxygen Containers

The wide use of liquid oxygen as an oxidant in rocket engines has resulted in an increased interest in low-temperature heat transfer. Storage tanks for this type of application, being uninsulated, contain a boiling-liquid low-temperature sink, which is susceptible to environmental heat inputs and subsequent liquid loss by vaporization. Such losses are difficult to predict due to the complex combination of ambient conditions which exist, and the lack of knowledge concerning their combined effects. Heat transfer in this field is difficult to analyze primarily because of its transient nature. This is a result of such factors as: (1) the growth of an insulating frost layer on the outer surface of the container, with its accompanying energy transfer to the system; (2) the temperature dependent convective air pattern that surrounds the container, (3) the transfer of radiant energy to the system, and (4) the mechanical failure of the frost itself with subsequent sloughing from the container wall. A lack of knowledge regarding the coefficient of diffusion of water vapor through air and the thermal conductivity of frost in this depressed temperature range further complicates the predictions of heat transfer.
Date: July 20, 1960
Creator: Holten, David Charles
System: The UNT Digital Library
Magnetic Field Measurements by Nuclear Resonance (open access)

Magnetic Field Measurements by Nuclear Resonance

Abstract: The purpose of this report is to outline the work done at the Radiation Laboratory toward the development of a magnetic field measuring device using the phenomenon of nuclear resonance. While the work described here is far from complete, it has served to indicate the limitations of the method as well as some of its possibilities. For reasons which will become apparent, the project is being discontinued. It is hoped that this report will serve as a starting point should the work be continued at some later time and that some of the mistakes already made need not be repeated.
Date: August 20, 1948
Creator: Kafitz, Peter
System: The UNT Digital Library
The Higher Fluorides of Plutonium (open access)

The Higher Fluorides of Plutonium

A systematic set of thermodynamic data for most of the known compounds of plutonium is presented. From earlier data present, it is now possible to extend the tabulation of data for the compounds of plutonium to include PuF(4), PuF(5), and PuF(6).
Date: March 20, 1950
Creator: Brewer, Leo, 1919-2005; Bromley, LeRoy A.; Gilles, Paul W. & Lofgren, Norman L.
System: The UNT Digital Library
Investigation Of Windows And Shields For Neutron Point Sources (open access)

Investigation Of Windows And Shields For Neutron Point Sources

An empirical approach for the evaluation of shielding materials for macrochemical manipulations of spontaneously fissioning heavy elements (curium and californium) has revealed interesting comparisons. High-density metal halide solutions were compared with lead glass and with rare earth glass for use as shielding windows. Laminated shields of lead-paraffin and uranium-paraffin were compared with water and with paraffin for shielding walls.
Date: May 20, 1959
Creator: Browne, Howard J.; Kaufmann, John A. & Garden, Nelson B.
System: The UNT Digital Library
The Reduction Of Boolean Truth Functions To Minimal Form (open access)

The Reduction Of Boolean Truth Functions To Minimal Form

The problem of the reduction of an arbitrary truth function to the minimal union of basic cells is discussed. The solution to this problem has applications to pattern recognition and logical circuit design. An algorithm is presented that solves the problem and generates the class of minimal unions. It partitions an arbitrary truth function into a well-defined set of subfunctions (components) in such a way that the partition is invariant under all transformations that preserve the topology of the original truth function.
Date: May 20, 1960
Creator: Natapoff, Alan
System: The UNT Digital Library
Thermal Stresses In A Liquid Hydrogen Transfer Line (open access)

Thermal Stresses In A Liquid Hydrogen Transfer Line

A variable-length vacuum-insulated liquid hydrogen transfer line is described. The vacuum system is semi-permanent, and segments of the line are assembled with only threaded vacuum fittings. Thermal stress calculations are presented for a statically indeterminate union coupling.
Date: March 20, 1960
Creator: Pope, William L.
System: The UNT Digital Library
Crystal Structure Of B 'Cu0.75Al0.25 (open access)

Crystal Structure Of B 'Cu0.75Al0.25

The problem of crystal structure of the martensitic B1 phase of the eutectic alloy in the Cu-Al system still requires a more accurate clarification (Hun ger and Dienst 1960, Tarora 1949). Martensitic phases in general are formed through small thrust (shear) deformations of the original lattice. On this basis the results of Hunger and Dienst (1960) are doubtful, since the lattice constants found by them have required a considerable reclassification. From the known lattice constants of the B1 phase (Tarora, 1949) and the orientation relationships of the B1 phase (Wassermann, 1934) one has expected a hexagonal lattice for the martensitic phase with [formula].
Date: April 20, 1962
Creator: Thomas, G. & Huffstutler, M.C., Jr.
System: The UNT Digital Library
Evidence For The Angular Distribution of Negative Pions Produced in n-n Collisions (open access)

Evidence For The Angular Distribution of Negative Pions Produced in n-n Collisions

The angular distribution of charged pions from 100 = 30 Mev neutron bombardment of C12 and Be9 has been measured. These data may be used to infer, by subtraction, the identity, within limits, of the [formula] and [formula] angular distributions.
Date: January 20, 1953
Creator: Neher, Leland K.
System: The UNT Digital Library