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Bibliography : Impact Testing of Materials

Description: The bibliography provided investigates the following sources: Chemical Abstracts 1947-1950., Metallurgical Abstracts Vols. 1-18., ASM Review of Metals Literature Vols. 1-6., J. Institute of Metals Vols. 78-80 (No. 7)., Physics Abstracts 1937-1950.
Date: June 8, 1952
Creator: Fick, Jean
Partner: UNT Libraries Government Documents Department
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Plasma Thermocoufle Development

Description: A report about a thermionic converter which has been constructed for the purpose of evaluating the effect of radiation shields in the interelectrode space.
Date: November 1952
Creator: Los Alamos Scientific Laboratory of the University of California
Partner: UNT Libraries Government Documents Department
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Multi-Velocity Serber-Wilson Neutron Diffusion Calculations

Description: Certain types of neutron diffusion calculations were considerably simplified when the Serber.Wilson Method was introduced about eight years ago. This method, semi-empirical In nature and named after its co-discoverers, was first formulated for the one-velocity isotropic theory and applied to spherical geometries. Within these limits it has in general proved to be a fairly accurate method. If restricted source-free case it has, in addition, turned out to be quite manageable both analytically and… more
Date: March 24, 1952
Creator: Carlson, Bengt & Bengt, Janet
Partner: UNT Libraries Government Documents Department
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The Spectrophotometric Determination of Uranium

Description: Measurement of the color intensity of the uranium thiocyanate complex is discussed as a method for the quantitative determination of uranium. Two procedures for amounts from 1 microgram to 1 milligram are described, and standard curves are shown. The effects of numerous foreign ions are shown, and methods of removal for some of these are discussed.
Date: March 15, 1952
Creator: Henicksman, Arthur L.
Partner: UNT Libraries Government Documents Department
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A Determination of the Coefficient of Thermal Expansion of Alpha Plutonium

Description: The coefficient of linear expansion of alpha plutonium has been determined for the range -180 to +100 degree C by the silicon-tube and dial-indicator method. The value of the expansion coefficient is reported as [formula]. Included are a detailed description of the apparatus and a discussion of the method.
Date: March 3, 1952
Creator: Elliott, R. O. & Tate, R. E.
Partner: UNT Libraries Government Documents Department
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A Determination of the Coefficient of Thermal Expansion of Alpha Plutonium

Description: The coefficient of linear expansion of alpha plutonium has been determined for the range -180 to +100 degree C by the silicon-tube and dial-indicator method. The value of the expansion coefficient is reported as [formula]. Included are a detailed description of the apparatus and a discussion of the method.
Date: March 1, 1952
Creator: Elliott, R. O. & Tate, R. E.
Partner: UNT Libraries Government Documents Department
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Dependence of the Oxidation of Uranium on Oxygen Pressure

Description: The oxidation of uranium metal has been studied from the standpoint of the oxygen dependence of the reaction rate in an effort to establish the mechanism. The experimental data of Perkins agree with the theoretical dependence of the oxygen pressure derived this report. This agreement supports the hypothesis that the rate-controlling step in the migration of cations in the DO2 lattice, although the observed time dependence is not necessarily in agreement with this conclusion. Experimental entrop… more
Date: March 20, 1952
Creator: Waber, James T. (James Thomas), 1920-
Partner: UNT Libraries Government Documents Department
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Preparation of Uranium-Molybdenum Alloys by Bomb Reduction

Description: High purity, homogeneous uranium-molybdenum alloys have been made successfully in the reduction bomb. The preparation of the alloys and some of their properties are described.
Date: February 1952
Creator: Hayward, B. R.
Partner: UNT Libraries Government Documents Department
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Determination of Zirconium in Plutonium-Zirconium Alloys

Description: A method for determining zirconium in plutonium-zirconium alloys was required as part of an investigation of alloys containing fissionable material, with possible use in nuclear reactors. Alloys of these two elements were brought into solution with a bisulfate fusion and the zirconium was separated by precipitation with p-bromomandelic acid. Determinations were completed by weighing the zirconium oxide obtained after ignition of the precipitate at 925 degree C. The precision of this recommended… more
Date: September 5, 1952
Creator: Bergstresser, K. S. (Karl Samuel), 1909-2004
Partner: UNT Libraries Government Documents Department
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Neutron Distribution Measurements at Pajarito by Means of Photographic Emulsion

Description: A method using photographic emulsions for the study of neutron distributions is described. The construction of a simple machine for producing experimental critical assemblies in which the method has been used is reported. Sources of error are discussed. Curves of the perturbations when small spheres of various materials are placed in the center of the assembly are shown.
Date: May 15, 1952
Creator: Young, Dwight S.
Partner: UNT Libraries Government Documents Department
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Total Neutron Cross Sections for U235, Normal Uranium, Pu239

Description: The total neutron cross sections for normal uranium, U235, and Pu239 are reported as a continuous function of energy for neutron energies between 40 and 7500 Kev. Three additional measurements were made between 17 and 20 Mev. The data were obtained from a good geometry transmission experiment in which 1-in.-diameter cylindrical samples were interposed midway between a neutron source and a neutron counter spaced at about 20 in. separation. In general, the statistical errors were within +- 0.2 ba… more
Date: November 20, 1952
Creator: Henkel, R. L.
Partner: UNT Libraries Government Documents Department
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A Review of Corrosion of Uranium and its Alloys

Description: One characteristic of the corrosion of uranium is the accelerating destruction of the metal under both dry and humid conditions and throughout a wide temperature range. Another corrosion property is the fracturing and fragmentizing of the oxide products. This results in an accelerating or decelerating growth law being operative at a particular time. This time is determined by whether the oxide ruptures rapidly or slowly compared to the rate of growth of the unfractured oxide. The reaction with … more
Date: November 7, 1952
Creator: Waber, James T. (James Thomas), 1920-
Partner: UNT Libraries Government Documents Department
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Corrosion of Uranium in Moist Air

Description: The corrosion of uranium in moist air is more rapid than had been thought previously. Earlier recommendations were based on test of 300 hr duration. In tests which were conducted for over 1000 hr, moisture has less effect than in those tests made over shorter periods. The corrosion of uranium by dry and moist air has been studied at 38, 57, and 75 degrees C. Although moisture increases the rate of initial attack, after 200 to 500 hr the effect is reduced and an accelerating corrosion rate overs… more
Date: January 1952
Creator: Waber, James T. (James Thomas), 1920-
Partner: UNT Libraries Government Documents Department
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A Modification of the Norelco Diffractometer for the Identification of Phases in Metallographic Specimens

Description: A modification of the specimen support for the Norelco diffractometer permits X-ray diffraction studies to be made of specimens prepared for metallographic examination. The unit has been successfully used to identify phases present in specimens of plutonium-uranium alloys.
Date: February 25, 1952
Creator: Stambaugh, C. K. & Whyte, D. D.
Partner: UNT Libraries Government Documents Department
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Optical Properties of Some Compounds of Uranium, Plutonium and Related Elements

Description: Optical and morphological properties of 28 compounds of uranium, plutonium, americium and some related elements, belonging to 21 isomorphous groups, are described. Additional data are given on 5 compounds of similar type described in the National Nuclear Energy Series, Division IV, Volume w, Chapter 19, “Actinide Elements.”
Date: June 6, 1952
Creator: Staritsky, Eugene & Walker, Donald I.
Partner: UNT Libraries Government Documents Department
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Burst Characteristics Associated with the Slow Assembly of Fissionable Materials

Description: This technical report is a sequel to LA-596, "Efficiency for Very Slow Assembly" by K. Fuchs. Herein are given estimates of temperature rise and pressure developed as a result of active material slowly being driven supercritical. Marginal assembly rates can thus be determined for both metal and solution assemblies above which the disassembly by thermal expansion is explosive in the sense that the active material or containing vessel is ruptured.
Date: July 1952
Creator: Hansen, G. E.
Partner: UNT Libraries Government Documents Department
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Further Study of Hematological Changes in Humans Chronically Exposed to Low Level Gamma Radiation

Description: This technical report summarizes the apparent hematological changes in 10 individuals, exposed to total-body gamma radiation in near tolerance amounts, over a period of four and one-half years. Two control groups, in addition to the exposed group, were used for comparative purposes. Control group I received essentially no gamma or beta radiations. Control group II received exposures at least a factor of 10 below those of the exposed group. The average total leukocyte count, absolute neutrophil… more
Date: July 1952
Creator: Carter, Robert E. & Worman, Frederick C. V., 1910-
Partner: UNT Libraries Government Documents Department
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Time Dependence of the Slowing Down of Neutrons with Constant Scattering Mean Free Path

Description: Simple expression are derived for the time dependence of slowing down of neutrons in a simple media. In Section I, a method suggested by age theory is used, while in section II, a two parameter scattering function is employed. Results are compared with exact calculations.
Date: May 31, 1952
Creator: Bell, G. I. & Bethe, Hans A. (Hans Albrecht), 1906-2005
Partner: UNT Libraries Government Documents Department
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Plastic Bonded RDX

Description: This technical report describes the preparation and properties of plastic bonded RDX mixtures containing approximately 30 weight percent RDX. These mixtures may readily be prepared by a method adaptable to existing ordnance plant equipment. they are roughly comparable to Compositions A and B in sensitivity and explosive performance, but are much stranger physically than these or similar explosives.
Date: July 17, 1952
Creator: James, E. & Smith, L. C.
Partner: UNT Libraries Government Documents Department
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Fusion Welding of Uranium

Description: A technique for the fusion welding of uranium has been under development and several methods of fusion welding have been investigated. The inert gas, shield arc method has proven to be the most satisfactory of the processes thus far examined. Uranium properly weld by this method was free from porosity, cracks, and oxide inclusions. Certain precautions and some special techniques were required to make good welds.
Date: August 1, 1952
Creator: Nelson, V. G.; Taub, J. N. & Dell, D. T.
Partner: UNT Libraries Government Documents Department
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Preparation of Uranium-Columbium Alloys by Bomb Reduction

Description: High purity, homogeneous alloys of uranium and columbium have been produced by adding powdered columbium metal or columbium/sub 2/O/sub 5/ to a regular reduction charge. Alloys up to 20.0 at.% columbium were produced. The preparation of the alloys, some of their properties, and casting results are described.
Date: February 1952
Creator: Hayward, B. R.
Partner: UNT Libraries Government Documents Department
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Neutron Burst from a Cylindrical Untamped OY Assembly

Description: A neutron burst from an untamped cylindrical Oy assembly occurred at the Pajarito Remote Control Laboratory at 1800 hours on 18 April 1952. The circumstances causing the burst and a description of the assembly involved are given There was no personnel hazard. Normal operations could have been resumed on other assemblies withing two or three hours after the burst. No evidence of damage to the oy was observed. It was determined that the burst resulted in 1.5 x 10(16) fissions in the oy. Also repo… more
Date: July 22, 1952
Creator: Mallary, E. C.; Hansen, G. E.; Linenberger, G. A. & Wood, D. P.
Partner: UNT Libraries Government Documents Department
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