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Summary of the Spert-I, -II, and -III reactor facilities

Description: Report containing "[a] brief description and design data summary of each of the SPERT Reactor Facilities is presented. Engineering, operating, and physics data are tabulated for use as basic references" (p. 3)
Date: November 1, 1957
Creator: Montgomery, C. R.; Norberg, J. A. & Wilson, T. R.
Partner: UNT Libraries Government Documents Department
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Checking the Operation of a Nuclear Counting Channel

Description: Quantitative criteria for judging the performance of a nuclear counting channel are discussed. Several procedures for evaluating the performance of the counting channels were combined with statistical tests of significance into one method or test. Statistical purity checks, comparison of actual and theoretical standard deviations, the Fisher variance test, and a chi-square test are described. (M.C.G.)
Date: November 1, 1957
Creator: Relf, K. E.
Partner: UNT Libraries Government Documents Department
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A Coated Cast Iron Crucible for Use With Eutectic Al-Si Alloy in the Temperature Range 595-650 C

Description: The feasibility of the coated metal crucible as a container for eutectic Al--Si alloy was proven by test. Small enamel-coated east-iron pets have successfully withstood Al-- Si alloys and an oxidizing atmosphere for a period of 3 months at 725 deg C. A similarly coated east-iron crucible containing 450 pounds of eutectic Al--Si alloy was successfully tested for 144 days in a jacketing operation conducted at 595 deg to 650 deg C. Under the same conditions, the normal service life of clay-bonded … more
Date: November 1, 1957
Creator: Yaggee, F. L.
Partner: UNT Libraries Government Documents Department
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Spallation-Fission Competition in Heaviest Elements; HeliumIon-Induced Reactions in Uranium Isotopes

Description: A radiochemical study of fission and spallation products produced by bombardment of U{sup 233}, U{sup 235}, and U{sup 238} with 18-46 Mev helium ions has been made. As in the case of similar studies using isotopes of plutonium as targets, most of the reaction cross section is taken up by fission. Also, the pronounced increase of the total cross section for ({alpha},xn) reactions with increasing mass number of the target that was observed for plutonium targets is observed for uranium targets.
Date: November 1, 1957
Creator: Vandenbosch, R.; Thomas, T. D.; Vandenbosch, S. E.; Glass, R. A. & Seaborg, G. T.
Partner: UNT Libraries Government Documents Department
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An X-Ray Spectrometric Method for Determination of Plutonium in Solution

Description: It is shown that the method of x-ray emission spectrometry can be extended advantageously to the determination of plutonium in solution, Since K and L x-ray emission from the elements of higher atomic number is not measurably influenced by valence state of the emitting atom or ion, this physical method is especially attractive for elements such as plutonium whose chemistry is intricate and whose chemical analysis is complicated by several valence states existing in solution. Nor is it affected … more
Date: November 1, 1957
Creator: Flikkema, D. S. & Schablaske, R. V.
Partner: UNT Libraries Government Documents Department
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PULSE PUMPING: A MEANS FOR TRANSFER OF PULSE COLUMN FLUIDS

Description: ABS>A pulse pump, which uses the energy of the pulser to pump fluids to or from a pulsed solvent extraction column, was steady in operation, and results were reproducible. Performance was satfsfactory with 2- and 12-in.-diam concatenated columns and with a 5-in.-diam straight column. (auth)
Date: November 1, 1957
Creator: Irvine, A.R.
Partner: UNT Libraries Government Documents Department
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Bibliography on maintainence

Description: No Description Available.
Date: November 1, 1957
Creator: Draper, B. D.
Partner: UNT Libraries Government Documents Department
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Annihilation of Nuclei by Displacement Spikes

Description: At an Octcber, 1957 meeting between USAEC, AECL, and Bettis personnel, the theoretical aspects of the radiation effects on the gamma red and alpha + gamma /sub 2/ transformation in U-Nb alloys were discussed. A theoretical model is presented which involves the annihilation of nuclei of the new phase by the action of displacement spikes. (W.D.M.)
Date: November 1, 1957
Creator: Thomas, D. E.
Partner: UNT Libraries Government Documents Department
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A LITERATURE SURVEY ON THE APPLICABILITY OF STEADY-STATE HEAT-TRANSFER COEFFICIENTS TO TRANSIENTS IN POWER OR IN FLOW WITH SINGLE-PHASE FLOW AND WITH TWO-PHASE FLOW

Description: A survey of all the known literature on the subject is presented. This survey consists of four parts amd two appendices, namely: response of single- phase-fluid forced-convection heat transfer to a rapid change of velocity, response of single-phase-fluid forced-convection heat transfer to a rapid change of temperature of the surface or of the incoming fluid, response of single- phasefluid free-convection heat transfer to a rapid change of the surface temperature or of the heat flux through the … more
Date: November 1, 1957
Creator: Norris, R. H.
Partner: UNT Libraries Government Documents Department
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LONGITUDINAL DISPERSION IN SOLVENT-EXTRACTION COLUMNS: PECLET NUMBERS FOR ORDERED AND RANDOM PACKINGS

Description: Dispersion phenomena in packed beds in both axial and radial directions were studied to provide basic data for extraction-tower design. Nine different beds were used, involving regular and random arrangements of spheres, and random arrangements of Raschig rings and Intalox saddles. For one-phase flow a wide range of Reynolds numbers was used (5 to 2000), covering regions of laminar, transition, and turbulent flow. For the axial Peclet number, different constant values were found in the turbulen… more
Date: November 1, 1957
Creator: Jacques, G.L. & Vermuelen, T.
Partner: UNT Libraries Government Documents Department
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AN ESTIMATE OF THE NONLEAKAGE PROBABILITY FOR BARE AQUEOUS HOMOGENEOUS U$sup 235$ REACTORS

Description: The slowing-down distribution, to thermal energy, of neutrons from a U/ sup 235/ fission source in an infinite H/sub 2/O medium up to 160 cm was determined from experimental data. The Fourier transform of this distribution and the In resonance distribution, which are the nonleakage probabilities for bare reactors, were also determined. (auth)
Date: November 1, 1957
Creator: Trubey, D.K.; Moran, H.S. & Weinberg, A.M.
Partner: UNT Libraries Government Documents Department
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Uranium Recovery, Uranium Geochemistry, Thermoluminescence and Related Studies. Final Report

Description: The recovery of urantum at the mine with portable equipment was shown to be feasible, using a process which involves grinding the ore, leaching with nitric acid, extracting with tributyl phosphate and kerosene, and precipitation with ammonia gas. The system is more expensive than a stationary plant but couid be used in an emergency or in difficulty accessible locations. The distribution of uranium was studied in various geographical locations and in several different materials including limesto… more
Date: November 1, 1957
Creator: Daniels, F.
Partner: UNT Libraries Government Documents Department
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The EBR-I Meltdown--Physical and Metallurgical Changes in the Core. Final Report--Metallurgy Program 7.2.18

Description: As a result of the partial meltdown which occurred in EBR-1 on November 29, 1955, it was necessary to remove the core assembly from the reactor and to separate the enriched fuel section from upper and lower unenriched blanket sections. A temporary cave was constructed on top of the reactor in order to remove the core assembly, and at this time about one-fourth of the fuel elements were removed. In order to perform further disassembly operations under less hazardous conditions, the core assembly… more
Date: November 1, 1957
Creator: Kittel, J. H.; Novick, M. & Buchanan, R. F.
Partner: UNT Libraries Government Documents Department
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CHANGE IN CRITICAL CONCENTRATION IN A CYLINDRICAL REACTOR DUE TO A LONGITUDINAL HOLE

Description: The change in critical concentration due to axial holes of various diameters in a right circular cylinder containing D/sub 2/O and pure U/sup 233/ or U/sup 235/ is discussed. This geometry is intended to represent an aqueous homogeneous reactor with a central void due to rotating flow of the fluid through the core. The critical equations and results of calculations are given. (M.H.R.)
Date: November 1, 1957
Creator: Tobias, M.
Partner: UNT Libraries Government Documents Department
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Technical Progress Report. [University of Illinois Graduate College Digital Computer Laboratory]: November 1957

Description: Basic circuits used on high-speed eomputers are described and control studies discussed. A prograim has been initiated to study iterative methods for solving systems of linear equations. A new and promising method of minimizing a function of n variables has been found, and a method applicable to evaluating determinants, solving linear algebraic equations, inverting matrices, and determining characteristic equations without round-off error is being tested. The Illiac use and operation for the No… more
Date: November 1, 1957
Partner: UNT Libraries Government Documents Department
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Calculated Equilibrium Constants for Metal-Oxygen Reactions in Molten Uranium Alloys

Description: The equilibrium constants for oxidation reactions occurring in molten U alloys are estimated from thermodynamic principles. Preliminary qualitative information was provided on: the relative ability of various elements to deoxidize U, and the relative stability of the oxide formed as a result. The latter will guide in the selection of oxides as possible crucible materials. Ideas were obtained on possible purification of U by melting. (M.H.R.)
Date: November 1, 1957
Creator: Roland, E. H.
Partner: UNT Libraries Government Documents Department
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Pressure Induced Metallic Transitions in Insulators

Description: Experimental evidence that several ionic and molecular crystals become conductors in the metallic range at ~ 250,000 atm. is presented. For some the transition pressure is roughly defined. (T. R.H.)
Date: November 1, 1957
Creator: Alder, B. J. & Christian, R. H.
Partner: UNT Libraries Government Documents Department
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Free-free gaunt factors

Description: The hydrogenic (unscreened coulomb) free-free gaunt factors are computed for a wide range of initial energies and photon frequencies. In addition, an average over initial energies with the Maxwell-Boltzmann distribution is performed to give the temperatureaveraged gaunt factors for use in opacity calculations. These are presented as functions of Z/sup 2//kT and h nu /kT. The relation between these gaunt factors and the rate of bremsstrahlung energy production is given, as is the total energy em… more
Date: November 1, 1957
Creator: Karzas, W. J. & Latter, R.
Partner: UNT Libraries Government Documents Department
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Fallout Studies and Assessment of Radiological Phenomena. Preliminary Report

Description: Data were obtained to evaluate the attenuation of photons, emitted from a fallout field, due to the surface roughness of the terrain. A study was made to determine the effect of the shot tower on the fallout material. Particles for comparison were collected from two detonations of equal scaled height, one tower supported and the other balloon supported. Data on time-dependent phenomena were recorded, as were physical characteristics of the fallout material. The use of small balloons as instrume… more
Date: November 1, 1957
Creator: Egeberg, L.E.
Partner: UNT Libraries Government Documents Department
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Progress Relating to Civilian Applications During October 1957

Description: BS>The creep properties of annealed Zircaloy-2, Zircaloy3, and 15% cold- worked Zircaloy-2 at elevated temperatures were determined. The metallurgical bond formed between electropolished U and Zr cladding by hydrostatic pressing is being evaluated. Oxidation data are given for Nb and Nb alloys in dry air at various temperatures. A study of the phase relationships which occur between the delta phases of the U--Zr and U--Mo systems is nearly complete. The solid-solid reactions of some uranium nit… more
Date: November 1, 1957
Creator: Dayton, Russell W. & Tipton, Clyde R., Jr.
Partner: UNT Libraries Government Documents Department
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Nuclear Chemical Research Radiochemical Separations and Activation Analysis. Progress Report No. 6 for November 1956-October 1957. Dept. Of Chemistry

Description: The present facilities at the University of Michigan for research in nuclear chemistry are described. The determination of the cross sections of various (d, alpha ) reactions induced by thc 7.78 plus or minus 0.05 Mev deuterons from the Unlversity of Michigan cyclotron is presented. The work on the absolute (d, alpha ) reaction cross sections has been simed at surveying the reaction yields as a function of atomic number with the hope of establishlng the presence or absence of closed shell effec… more
Date: November 1, 1957
Partner: UNT Libraries Government Documents Department
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Fallout studies and assessment of radiological phenomena. Preliminary report. Project 32. 4 (of) Operation Plumbbob

Description: Data were obtained to evaluate the attenuation of photons, emitted from a fallout field, due to the surface roughness of the terrain. A study was made to determine the effect of the shot tower on the fallout material. Particles for comparison were collected from two detonations of equal scaled height, one tower supported and the other balloon supported. Data on time-dependent phenomena were recorded, as were physical characteristics of the fallout material. The use of small balloons as instrume… more
Date: November 1, 1957
Creator: Egeberg, L.E.
Partner: UNT Libraries Government Documents Department
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