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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
Partner: UNT Libraries Government Documents Department
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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
Partner: UNT Libraries Government Documents Department
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Critical Masses of Oralloy Lattices Immersed in Water

Description: Certain oralloy (Oy) lattices were immersed in infinite water for determining critical masses at various low-Oy densities. Three Oy unit sizes were used. In a broad sense the experiment shows safe and unsafe conditions for handling heterogeneous Oy-water mixtures.
Date: November 1955
Creator: Hoogterp, J. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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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
Partner: UNT Libraries Government Documents Department
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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
Partner: UNT Libraries Government Documents Department
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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
Partner: UNT Libraries Government Documents Department
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The Determination of Vanadium and Chromium in Alloys With Uranium

Description: Two methods are described for the quantitative determination of vanadium in uranium-vanadium alloys. A procedure is also described for the quantitative determination of vanadium and chromium in uranium-chromium-vanadium alloys.
Date: September 1955
Creator: Willard, Hobart H. (Hobart Hurd), 1881-1974 & Kriege, Owen H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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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
Partner: UNT Libraries Government Documents Department
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Fast Neutron Cross Sections: Corrections to LA-1714 and a Correlation of 3 Mev Values

Description: Recent measurements on the long counter efficiency in which comparisons were made with the (n, p) scattering cross section, additional variations in efficiency were found which varied slowly with neutron energy but were still correlated with the total neutron cross section of carbon. Because of these variations in efficiency there are errors in the fission cross sections reported in LA-1714. Corrections to these data have been given here.
Date: March 1, 1957
Creator: Henkel, Richard L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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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
Partner: UNT Libraries Government Documents Department
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The Injection Casting of Plutonium

Description: Plutonium metal can be injected into cold metal molds to form castings with thin walls. The operation is performed in a vacuum chamber, using an inert gas as the injecting medium. Sound pieces free of gas cavities can be made using either pure or delta-stabilized plutonium. This report describes the equipment and techniques used to cast a typical thin section piece in the form of a 6 in. diameter, 45' cone.
Date: January 1959
Creator: Anderson, J. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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An Integral Experiment to Measure the Tritium Production From Li7 By 14 Mev Neutrons in a Lithium Deuteride Sphere

Description: A sphere of LiD 2 feet in diameter was irradiated by 2 x 10<sup>15 14 Mev neutrons. Samples of Li<sup>7 metal were positioned at various radii for the irradiation. An analysis of these samples for tritium led to a determination of the number of tritons produced by 14 Mev neutrons acting on Li<sup>7 in a LiD system.
Date: June 1958
Creator: Wyman, Marvin Eugene, 1921-
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Magnetic Field Distributions in a Pinched Discharge

Description: By use of small magnetic probes inserted into the discharge, the magnetic field distributions in the interior of a high-power pinched discharge have been measured as a function of time. From these data the current distributions can be deduced. By applying a static pressure calculation, in the cases when the radical pinch accelerations are small, the plasma pressure nkT in the pinch has been determined, with superimposed axial magnetic fields, and for stable and unstable configurations.
Date: November 20, 1956
Creator: Burkhardt, L. C.; Lovberg, Ralph H. (Ralph Harvey) & Phillips, J. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Measurement of the [Lithium-7] Cross-Section for Several Neutron Energies From 4 to 15 Mev by Absolute Counting Techniques

Description: A measurement of the [Lithium-7] reaction cross section by absolute counting of the tritium betas is described. The cross section was measured at several neutron energies between 4 Mev and 15 Mev. A comparison with results by emulsion techniques is given.
Date: June 1958
Creator: Wyman, Marvin Eugene, 1921- & Thorpe, Munson M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Neutron Emission Probabilities From the Interaction of 14-Mev Neutrons With Be, Ta, Bi, and U238

Description: The spatial and spectral distributions of the neutrons from 14-Mev neutron interactions with Ta, Bi, and U have been obtained using nuclear emulsion detectors in conjunction with a neutron collimator. The space-integrated neutron spectrum has been obtained for Be by means of a sphere experiment.
Date: January 1957
Creator: Rosen, Louis, 1918-2009 & Stewart, Leona
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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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
Partner: UNT Libraries Government Documents Department
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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
Partner: UNT Libraries Government Documents Department
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Nuclear Propulsion Test Reactor Kiwi-A Neutronic Studies

Description: Critical conditions were obtained for a series of uranium-graphite fueled assemblies in the C/Oy range 150 to 500 with thick graphite reflectors and Be or D2O islands. Perturbations were studied in order to find the effect on reactivity of geometrical changes and engineering features. Information from these studies was used to develop a mock-up of an optimum reactor geometry for the first rocket reactor test device, Kiwi-A. Studies on a zero power mock-up (Zepo-A) helped establish its design de… more
Date: September 1958
Creator: Orndoff, John D. & Hoogterp, J. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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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
Partner: UNT Libraries Government Documents Department
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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
Partner: UNT Libraries Government Documents Department
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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
Partner: UNT Libraries Government Documents Department
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