UNT Libraries Government Documents Department - 37 Matching Results

Search Results

Results: 1 - 24 next
open access

Taylor Instability in Shock Acceleration of Compressible Fluids

Description: The initial growth of irregularities on an interface between two compressible fluids is studied for impulsive (i.e., shock) acceleration. It was found that the ultimate rate of growth is roughly the same as that given by the incompressible theory, if the initial compression of the irregularities and of the fluids is taken into account.
Date: July 1954
Creator: Richtmyer, Robert D.
Item Type: Refine your search to only Report
open access

Oxidation of Metals Subjected to a Linear Temperature Increase: Cubic and Logarithmic Laws

Description: The total amount of oxidation which occurs up to a given time when a metal is subjected to a continuously increasing temperature has been studied by Fasseli and coworkers. A constant rate of increase as well as the linear and parabolic oxidation laws were assumed. The present report extends the analysis to include to the cubic and logarithmic growth laws. The notation for the nth order exponential integral functions which is used here simplifies the equations and the calculations.
Date: July 1955
Creator: Waber, James T. (James Thomas), 1920-
Item Type: Refine your search to only Report
open access

Inelastic Cross Sections and [ ] For Some Fissionable Isotopes

Description: The transmissions of neutrons through spherical shells of normal uranium, oralloy, and Pu239 are reported. One group of measurements was made using a pure fission neutron source produced by thermal neutrons. The other group of measurements was made using monoenergetic neutrons. From both groups of measurements, the inelastic scattering cross sections have been determined according to methods developed in Los Alamos Scientific Laboratory Report LA-1429 (Jaunary 1955).
Date: August 1955
Creator: Bethe, Hans A. (Hans Albrecht), 1906-2005; Beyster, J. Robert, 1924-2014 & Carter, R. E.
Item Type: Refine your search to only Report
open access

Status Report on the K-4 Magnetic Induction Machine

Description: Due to laboratory interest in devices capable of production of high current with short rise times in gaseous discharges (plasmas), an experimental machine has been built and tested to obtain data applicable to the design of a high gradient magnetic induction machine. This machine consists of a condenser type energy storage bank air core coupled to a toroid in which the plasma is produced. It has been used to determine circuit parameters and the effect of these parameters on the plasma.
Date: August 8, 1955
Creator: Baggett, L. M.; Franklin, T. L. & Van Duren, A.
Item Type: Refine your search to only Report
open access

The Determination of Small Amounts of Thorium in the Presence of Uranium, Titanium, and Tungsten

Description: Thorium is determined in uranium alloys by means of a fluoride separation followed by a complexometric titration. A nitric of hydrochloric acid solution of the alloy is neutralized to a pH of 2.0 to 3.0 and the thorium precipitated as thorium fluoride by the addition of hydrofluoric acid and ammonium fluoride using lanthanum as a carrier.
Date: June 1955
Creator: Willard, Hobart H. (Hobart Hurd), 1881-1974; Moses, Arthur W. & Gardner, Ross D.
Item Type: Refine your search to only Report
open access

The Activation of Low-Reactivity Uranium Dioxide Particles

Description: A detailed study of the activation of low-reactivity UO2 particles toward HF by successive oxidation and reduction was carried out. The effect of repeated successive oxidation and reduction on the reactivity of the UO2 source material toward HF was evaluated by hydrofluorination.
Date: October 1955
Creator: Bard, R. J.; Bunker, D. L.; Greenough, R. C. & Kalmus, E. H.
Item Type: Refine your search to only Report
open access

Determination of Aluminum in Plutonium

Description: A spectrophotometric method is described for the determination of aluminum in plutonium-aluminum alloys. The alloys are dissolved in parchloric acid and the diluted solution electrolyzed using a mercury cathode to remove any iron present which would interfere in the subsequent analysis. Then plutonium is then separated from the aluminum by precipitation as the insoluble iodate, and the aluminum determined in the supernatant solution using aluminon as a color reagent.
Date: August 1955
Creator: Smith, M. E.
Item Type: Refine your search to only Report
open access

Biological Effectiveness of Nuclear Radiations From Fission Weapons

Description: Thermal neutron measurements made on five weapons during Operation Teapot indicated that these neutrons contribute at most 2 per cent of the total neutron dose in air. However, the total fluxes were high and thermal neutrons may become important under shielding conditions and may significantly affect the responses of the film badges and certain sensitive dose detectors, especially when the neutron to gamma flux ratio is high.
Date: August 1955
Creator: Harris, Payne S.
Item Type: Refine your search to only Report
open access

Preliminary Survey of Uranium Metal Exponential Columns

Description: Reflected cylindrical exponential columns of bare and natural uranium were constructed of stacked plates of oralloy (93.4%) and tuballoy. Average concentrations of U235 ranging from 0,72% to 9.18% were investigated. Flux distributions, buckling values, and spectral indices were obtained. The indicated U235 concentration for infinite critical mass is about 5.5%.
Date: January 1956
Creator: Neuer, J. J. & Stewart, C. B.
Item Type: Refine your search to only Report
open access

Determination of Ruthenium in Plutonium

Description: An analytical procedure for 0.04 to 1.6 percent ruthenium in plutonium metal was developed. Determination of ruthenium in metallic plutonium was investigated as part of a program for securing analytical procedures for various metals in plutonium. However, results of the investigation are given in this report with emphasis on the determination of ruthenium in plutonium chloride solutions. Specifically, this report is primarily concerned with the separation and determination of 40 to 400 microgra… more
Date: March 1956
Creator: Bergstresser, K. S. (Karl Samuel), 1909-2004
Item Type: Refine your search to only Report
open access

Time Behavior of Godiva Through Prompt Critical

Description: The transition region between short, but controlled, pile periods and uncontrolled, highly-supercritical conditions has been investigated with an unreflected, spherical uranium assembly (Godiva). This study was undertaken because knowledge of the behavior of supercritical systems is important in evaluation of reactor hazards and also the hazards of less standard operations involving possibly critical quantities of active material.
Date: April 1956
Creator: Wimett, T. F.
Item Type: Refine your search to only Report
open access

Stability of the Pinch

Description: In this report, the stability of a pinched fluid is studied theoretically, under the combined influence of a longitudinal magnetic field and conducting exterior shell. Conditions allowing complete stability are found.
Date: April 1956
Creator: Rosenbluth, M. N.
Item Type: Refine your search to only Report
open access

Fabrication Procedure For RaLa Source Fuel Rods

Description: A new method to procure RaLa sources was proposed by Group CMR-10, Los Alamos Scientific Laboratory. This method depended upon irradiation of small-diameter U235 wire in the Materials Testing Reactor, Arco, Idaho. A procedure for cladding and sealing U235 wire in stainless steel tubing, by drawing, plugging the tube ends, and welding, was developed, tested, and proved to be satisfactory.
Date: February 15, 1956
Creator: Hockett, J. E.; Duncan, J. D.; Doll, D. T. & Taub, J. M.
Item Type: Refine your search to only Report
open access

Process Development Studies for Recovering Ba140 From Irradiated Enriched-Uranium Rods

Description: As an alternative to recovering Ba140 from the spent MTR fuel assemblies a new enriched-uranium fuel pin was designed for irradiation. Two specimens, each containing about 3 g. of uranium (93% enriched), were irradiated to 1.3% and about 18% burnup. Examination after irradiation indicated that design improvements were needed; photographs are presented to illustrate the damage incurred during irradiation. A simple inorganic chemical process using precipitation and filtration techniques was devel… more
Date: March 1956
Creator: Schulte, John W.
Item Type: Refine your search to only Report
open access

Plutonium-Metal Critical Assemblies

Description: The two plutonium-metal critical assemblies that have been studied at Pajarito Site are Jezebel, bare plutonium; and Popsy, a plutonium core in a thick normal uranium reflector. These assemblies and their properties are described.
Date: May 1956
Creator: Jarvis, G. A.; Linenberger, G. A. & Paxton, Hugh Campbell
Item Type: Refine your search to only Report
open access

Nonweapons Activities at Los Alamos Scientific Laboratory. Part 1: Controlled Thermonuclear Reactions

Description: The work of the Laboratory has expanded into applications of nuclear energy which are significant for natural defense and security, but are not directly connected with weapons development. It was felt, therefore, that a description of the nonweapons activities of the Laboratory would serve a useful purpose at this time.. For classification reasons, it has been necessary to issue the report in three parts; this is the first and is concerned with controlled thermonuclear reactions.
Date: June 1956
Creator: Glasstone, Samuel, 1897-1986
Item Type: Refine your search to only Report
open access

Some Experiments on the Precipitation of Plutonium Compounds From Triputyl Phosphate Solutions

Description: The experiments described in this report were designed to explore the feasibility of precipitating plutonium from 35 percent TBP in Gulf BT using peroxide, fluoride, sulfide, sulfite, sulfate, cocalate, hydroxide, iodate and phosphate ions from anhydrous, dilute and concentrated aqueous sources.
Date: June 11, 1956
Creator: Maraman, W. J. & Mullins, L. J.
Item Type: Refine your search to only Report
open access

Nonweapons Activities at Los Alamos Scientific Laboratory. Part III: Power Reactor Experiments

Description: The work of the Laboratory has greatly expanded into applications of nuclear energy which are significant for national defense and security, but are not directly connected with weapons development. It was felt, therefore, that a description of the non weapons activities of the Laboratory would serve a useful purpose at this time. For classification reasons, it has been necessary to issue the report in three parts; the third part concerns power reactor experiments.
Date: June 1956
Creator: Glasstone, Samuel, 1897-1986
Item Type: Refine your search to only Report
Back to Top of Screen