9-ANGIE : a Two-Dimensional, Multigroup, Neutron-Diffusion-Theory Reactor Code for the IBM 709 or 7090 (open access)

9-ANGIE : a Two-Dimensional, Multigroup, Neutron-Diffusion-Theory Reactor Code for the IBM 709 or 7090

The 9-ANGIE, one of a series of reactor neutronic programs for an IBM 709 or 7090 data processing system, solves the time-dependent, multi-group, neutron diffusion equation for one to eighteen energy groups applied to a rectangular mesh superimposed on either an x-y or an r-z plane. It is characterized by its generalities in region description, boundary conditions, etc., without sacrificing simplicity of input preparation and ease of machine operation. The notation, the style, and the format have been held as consistent as possible with 9-ZOOM, the companion one-dimensional program.
Date: October 28, 1960
Creator: Stone, Stuart P.
Object Type: Report
System: The UNT Digital Library
Air Core Cryogenic Magnet Coils for Fusion Research and High Energy Nuclear Physics Applications (open access)

Air Core Cryogenic Magnet Coils for Fusion Research and High Energy Nuclear Physics Applications

The following document was done under the auspices of the U.S. Atomic Energy Commission with the intention of analyzing air core cryogenic magnet coils and its usage in fusion research and high energy nuclear physics applications.
Date: October 30, 1959
Creator: Post, Richard F. & Taylor, C. E.
Object Type: Report
System: The UNT Digital Library
Analysis of the Interaction of 300-Mev Neutrons with Xenon (open access)

Analysis of the Interaction of 300-Mev Neutrons with Xenon

Abstract: And investigation of the interactions between 300-Mev neutrons and xenon was made by means of a cloud chamber in a pulsed magnetic field of 21,700 gauss placed in the neutron beam of the 184-inch Berkeley cyclotron. Eighty-seven negative pion events and 257 other stars were analyzed. In addition an experimental check was made on the energy of the incoming neutrons. Classification, identification, and angular and energy distributions of prongs associated with all events are presented. Interpretations of results are given.
Date: October 17, 1956
Creator: Morris, Richard Herbert, 1928-
Object Type: Thesis or Dissertation
System: The UNT Digital Library
The bumpy torus (open access)

The bumpy torus

"In this paper the single particle motion in the magnetic field created by a circular array of circular current loops is investigated." (p. 3)
Date: October 1959
Creator: Gibson, Gordon; Jordan, Willard C. & Lauer, Eugene J.
Object Type: Report
System: The UNT Digital Library
Capacity Factors in the Performance of Perforated Plate Distillation Columns (open access)

Capacity Factors in the Performance of Perforated Plate Distillation Columns

From abstract: "A study of factors affecting the vapor handling capacity of perforated plate liquid-vapor contacting columns. Vapor phase pressure drop across plates, liquid entrainment upward from plate to plate, and plate stability were investigated as functions of operational and geometric column parameters."
Date: October 1954
Creator: Hunt, Charles d'Ancona, 1924-
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Convergence and Summability of Orthogonal Series (open access)

Convergence and Summability of Orthogonal Series

Consider an orthogonal series [formula] where [formula] is an arbitrary orthonormal system for the interval (a, b) and [formula] is a sequence of real numbers. This report is a collection of theorems which give sufficient conditions for the convergence almost everywhere in (a, b) and summability a. e. in (a, b) of the above series.
Date: October 6, 1953
Creator: Killeen, John, 1925-
Object Type: Report
System: The UNT Digital Library
Correction to the Debye-Huckel Theory (open access)

Correction to the Debye-Huckel Theory

In a recent paper, Bowers and Salpeter described a method for calculating the correlation energy of a classical one-component electron gas. The same problem has been considered by Meeron, Friedman, and Abe, using methods involving the summation of cert infinite classes of diagrams. While the relation between these theories and that of Bowers and Saltpeter is not year clear, it is interesting to note that Abe obtained an equivalent expression by approximating an integral. We have calculated the contribution to the equation of state using Abe's original expression and we found that the equation is valid only for certain values and it gives a correction of the wrong sign. On the other hand, our results are comparable to those which Bowers and Salpeter obtain from higher approximations.
Date: October 7, 1960
Creator: Trulio, John G.
Object Type: Report
System: The UNT Digital Library
Cosmic Rays From Large Supernovae (open access)

Cosmic Rays From Large Supernovae

The theory of the hydrodynamic origin of cosmic rays proposed by Johnson and the author (Colgate) has developed to the point where the final evolution of a star to the supernova instability and subsequent explosion can be described with sufficient detail such that cosmic rays with appropriate intensity, composition, and spectrum to account for observations are a logical and necessary result. In the first publication it was pointed out that nuclei in the surface of the star may acquire many orders or magnitude more than the average energy per particle released in the explosion because of the large ratio of matter density between the core and the outer mantle. A shock from a sudden pressure increase in the core intensifies as it advances into lower-density material, thereby imparting extreme relativistic energies to the outermost layers. The shock wave was assumed on the basis that the observed explosion occurred in a time short compared to the traversal time of sound across the dimensions of the star. It was argued without proof that an adiabatic process would be inconsistent with the accepted gravitational instability as the trigger mechanism. In an attempt to confirm this supposition we extend the hydrodynamic calculations to describe …
Date: October 21, 1963
Creator: Colgate, S. A. & White, R. H.
Object Type: Report
System: The UNT Digital Library
Cyclotron Resonance Heating of a Deuterium Plasma (open access)

Cyclotron Resonance Heating of a Deuterium Plasma

Abstract: "The energy gained by a deuterium plasma, from a three megacycle per second radiofrequency field, was studied experimentally. A static magnetic field, in the form of a "mirror", was used. The coil of an rf resonant circuit, placed at the center of the machine produced a time-varying magnetic field parallel to the static field. This, in turn, induced an electrical field, in an azmuthal direction, which acted on the ions. When this was in synchronism with the cyclotron frequency, the ions could pick up energy. At this resonance the light intensity from the plasma increased markedly. This effect was used as evidence for the transfer of energy to the ions."
Date: October 28, 1957
Creator: Chambers, Edmund S.; Lamb, William A. S. & Kippenhan, Dean O.
Object Type: Report
System: The UNT Digital Library
Decoupling Concepts and Project Cowboy (open access)

Decoupling Concepts and Project Cowboy

This paper for the Project Vela Technical Symposium is intended to be a brief resume of the principle results of the Cowboy program. The material is taken from a report entitled "Use of Large Cavities to Reduce Seismic Waves from Underground Explosions" by Herbat, Werth, and Spring (1960). As a result, no effect is made to justify each step in the analysis; reference should be made to the complete report.
Date: October 11, 1960
Creator: Werth, Glenn C.
Object Type: Report
System: The UNT Digital Library
The Design of Large Cryogenic Magnet Coils : Paper No. 2 (open access)

The Design of Large Cryogenic Magnet Coils : Paper No. 2

Abstract: "Preliminary design and experimental work aimed toward fabrication of large magnet coils with encapsulated sodium conductors is outlined. Aspects of cooling cycles are discussed along with heat transfer, thermal stability, and the mechanical reinforcement of such coils."
Date: October 30, 1959
Creator: Post, Richard F. & Taylor, C. E.
Object Type: Report
System: The UNT Digital Library
Electromagnetic Properties Of A Charged Vector Meson (open access)

Electromagnetic Properties Of A Charged Vector Meson

A systematic study is made of the electromagnetic properties of charged vector mesons. The various formalisms used to describe charged particles of spin 1 are compared, and a new first-order formulation of the Stuckelberg theory is developed.
Date: October 12, 1961
Creator: Young, James A. & Bludmen, Sidney A.
Object Type: Report
System: The UNT Digital Library
An Experimental Check On The Range-Energy Curve Of Pions In Propane (open access)

An Experimental Check On The Range-Energy Curve Of Pions In Propane

The kinetic energies of pions from radioactive decays in propane have been determined by using the information given by the angles of the secondary particles. This method is independent of any range-energy relation.
Date: October 24, 1960
Creator: Patrick, Jack W.
Object Type: Report
System: The UNT Digital Library
Free Radicals In Photosynthetic Systems (open access)

Free Radicals In Photosynthetic Systems

The method of detecting unpaired electrons in liquid and solid systems by electron spin resonance is discussed. The significance of the hyperfine structure in electron spin resonance is discussed and the possible use of these structural features of the electron spin resonance spectrum to elucidate the nature of the photoproduced unpaired electrons in photosynthesizing systems is introduced.
Date: October 8, 1958
Creator: Calvin, Melvin, 1911-1997
Object Type: Report
System: The UNT Digital Library
Gaseous Detonation : Bibliography (open access)

Gaseous Detonation : Bibliography

This report is a bibliography divided into two sections: one that documents books and journal articles, the other containing classified and unclassified documents, that are based around gaseous detonation. These sources cover the period between 1941 to October of 1957.
Date: October 28, 1957
Creator: Maynard, G. R. & Frost, Fred
Object Type: Report
System: The UNT Digital Library
High-Energy, Low-Thrust Jupiter Missions (open access)

High-Energy, Low-Thrust Jupiter Missions

Previous studies have been made of the relationship among acceleration, specific power, payload fraction, and travel time for many interplanetary missions. These utilized tangential thrust and correspond to the high thrust Hohmann transfer orbits. In addition, a complete optimization of the one way Mars mission has been accomplished. Since the minimum Jupiter round trip time was six and a half years for tangential thrust, calculations were carried out using higher energy transfer orbits. It is shown that the orbit-matching problem cannot be solved with tangential thrust programming in this case. The initial period of acceleration away from the earth's orbit was accomplished using tangential thrust in order to minimize energy expenditure. This was followed by a period of coasting until the proper moment arrived for commencing the orbit-matching maneuver. This terminates when the velocity and spatial coordinates of Jupiter's orbit are matched. The technique used for accomplishing these various orbit matching conditions without iteration are described. Best results for the final maneuver were obtained with the thrust vector approximately normal to the velocity vector. By this technique it is shown that the round-trip Jupiter mission may be carried out in four and an half years with 16% payload and 0.10 …
Date: October 31, 1960
Creator: Fox, Robert H.
Object Type: Report
System: The UNT Digital Library
Instability Considerations for Various Difference Equations Derived from the Diffusion Equation (open access)

Instability Considerations for Various Difference Equations Derived from the Diffusion Equation

From abstract: "This paper is concerned with instability analysis of various difference equations whose solutions represent the solution of a given diffusion equation where "a" is positive under stated initial and boundry conditions."
Date: October 1954
Creator: Evans, George W.; Brousseau, R. J. & Kierstead, Ralph
Object Type: Report
System: The UNT Digital Library
Interaction of Heparin Active Factor and Egg-Yolk Lipoprotein (open access)

Interaction of Heparin Active Factor and Egg-Yolk Lipoprotein

There is an active principle in heparinized plasma that may be studied in vitro with a prescribed lipoprotein-containing medium. To this end the interaction of this active principle or factor was studied with lipoprotein species isolated from egg yolk.
Date: October 1953
Creator: Nichols, Alex V.; Rubin, L. & Lindgren, Frank T.
Object Type: Report
System: The UNT Digital Library
Ionization Equilibrium Equation of State (open access)

Ionization Equilibrium Equation of State

Abstract: "A simple solution to Saha's equation has been obtained. The method of solution involves iteration with respect to the electron pressure or concentration and can be applied to the simultaneous calculations of any number of ions. Sample results are given for lithium and aluminum."
Date: October 5, 1959
Creator: Rouse, Carl A.
Object Type: Report
System: The UNT Digital Library
K-Meson Degeneracies (open access)

K-Meson Degeneracies

Abstract: "Some discussion is given of the possible real and charge parity degeneracies of K mesons. An explicit model is used to illustrate the superselection rule, which forbids the K meson to be a mixture of intrinsic parity states and at the same time conserve parity in decay. The discussion is extended to charge parity; the 01, 02 scheme appears to be more than an exercise in polarization phenomenons and to involve a radically new basic assumption--namely, that the 0-0 and 0-(-0) are degenerate states. The [tau]-0 is compared with the 02 as a long-lived K meson, and a method of experimental distinction is described."
Date: October 1956
Creator: Peaslee, D. C.
Object Type: Report
System: The UNT Digital Library
Lunar Height Changes in the E-Layer (open access)

Lunar Height Changes in the E-Layer

Abstract: "The height changes produced by vertical electronic diffusion in the presence of negative ions are examined in some detail. Application of the results to the E-layer shows that a previous qualitative discussion remains valid."
Date: October 1953
Creator: Johnson, M. H.
Object Type: Report
System: The UNT Digital Library
A Method of Solving the Two-End-Point Problem for Second-Order Differential Equations (open access)

A Method of Solving the Two-End-Point Problem for Second-Order Differential Equations

The following report discusses a method used to solve a two-end-point problem for second-order differential equations. The point of the method is to keep the two-end-points in the same order of magnitude.
Date: October 1956
Creator: Faulkner, James E.
Object Type: Report
System: The UNT Digital Library
Mirror Machine Program : ARC Research Progress Report (open access)

Mirror Machine Program : ARC Research Progress Report

This report follows experiments concerned with a particular proposal or set of related proposals of means for the production of plasma with density above 10-11 particles per cm-3 with a temperature of the order of a few electron volts.
Date: October 15, 1956
Creator: Post, Richard F.
Object Type: Report
System: The UNT Digital Library
Multiplying Lattices (open access)

Multiplying Lattices

The use of thermally fissionable material in the lattice adds a distributed source of fast neutrons which must be considered in evaluating the problem.
Date: October 18, 1950
Creator: Brown, H.
Object Type: Report
System: The UNT Digital Library