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Atomic Energy Commission Reports
2,838
Hanford Works Reports
844
University of California Radiation Laboratory Reports
719
HW (Series)
599
Brookhaven National Laboratory Reports
520
BNL (Series)
519
Oak Ridge National Laboratory Reports
469
UCRL (Series)
300
AECU (Series)
272
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224
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The Armour Dust Fueled Reactor (Adfr)
"Study of the ADFR concept included experimental work on fuel dust suspension stability and redispersibility, erosion, and dust deposition using the fuel dust circulation loop. Some theoretical work was done in the areas of reactor safety and breeding."
Date:
October 31, 1958
Creator:
Loewe, W. E. & Krucoff, D.
Object Type:
Report
System:
The UNT Digital Library
An Investigation of Scaling of Zirconium at Elevated Temperatures
"Single crystals of iodide zirconium were oxidized to determine any lattice relationship existing between zirconium and the oxide overlay, and a review of experimental data and proposed theories to explain the oxidation behavior of zirconium was made. A method of measuring the rate and depth of gas diffusion in alpha zirconium was devised, and calculations were made for the temperature range 900 to 1200 deg C using samples scaled in air, oxygen, and nitrogen. The consumption rates at lower temperatures were estimated from solutions to the diffusion equation. Distribution of gas during scaling was investigated. In general, breakaway occurs at shorter scaling, and the growth rate increases as the impurity level of zirconium is raised and the scaling atmosphere is changed from oxygen to air."
Date:
November 6, 1958
Creator:
Probst, H. B.; Evans, E. B. & Baldwin, W. H. Jr.
Object Type:
Report
System:
The UNT Digital Library
Rapid Reading of Large Binary Scales
"A chart is presented for use in the rapid conversion of octal to decimal numbers. Tabulated data compare the decimal and octal systems, and decimal and binary numbers up to 19/sub 10/ = 10,011/sub 2/. Application of the data in reading scaling circuits is discussed."
Date:
January 1, 1955
Creator:
Anderson, Ernest C.
Object Type:
Report
System:
The UNT Digital Library
Alternating Current Polarography: Evaluation of the Accuracy of the Data and Calculation Procedures
"The data obtained by a-c polarography, when used to determine electrode parameters such as heterogeneous rate constant and when used as an analytical tool, are evaluated. Certain aspects of the experimental approach both in measurement and calculation are reviewed. The importance and means of correcting for the series resistance of the cell system itself and of using equations which take into account the phase differences between the faradaic and capacitive currents are developed. Other topics reviewed include the nature of the dependence of the peak a-c on depolarizer concentration, effect of adsorption of depolarizer and electrode, and a simplified procedure for quantitative analysis."
Date:
July 23, 1958
Creator:
Bauer, Henry H. & Elving, Philip J.
Object Type:
Report
System:
The UNT Digital Library
Feasibility Study of Superflux Reactor
"The feasibility of a three-region aqueous homogeneous reactor designed to produce a maximum thermal flux at the center of 10/sup 16/ n/cm/sup 2/ -sec is investigated. Inner and outer regions of pure D/sub 2/O and an intermediate region of uranyl sulfate in D/sub 2/O are considered. Characteristics were calculated for the case R/sub 1/ = 40 cm, R/sub 2/ = 60 cm, and R/sub 3/ = 150 cm."
Date:
December 20, 1956
Creator:
Bolger, J. C.; D'Urso, S. F. & Mask, R. O.
Object Type:
Report
System:
The UNT Digital Library
Engineering Report
"An evaporator system was developed and tested which will concentrate two types of non-radioactive wastes. The wastes were of the slurry type within initial concentration of 32% solids and a final concentration of 7O% solids by weight. Information concerning design practices for this type of evaporator, startup and operating procedures, methods of recovery from unexpected shutdown, and procedures for descaling was gained. The test waste was synthetic and not radioactive; however, the procedures were evolved for application to radioactive materials. In addition, over-all heat transfer rates as a function of temperature difference and the relationship between percent concentration and boiling point for the two wastes were obtained."
Date:
October 15, 1956
Creator:
Carnavos, Theodore C.
Object Type:
Report
System:
The UNT Digital Library
Correlation of Polarographic Walf-Wave Potentials With Nuclear Magnetic Resonance "Chemical Shifts"
"Since nuclear magnetic resonance ''chemical shifts'' are considered to be good measures of electron densities in molecules, the extent to which they can be correlated with the polarographic half-wave potentials of organic compounds has been surveyed. To extend the applicability and interpretation of the proposed correlation, parallel correlation of E, with Hammett's sigma and Taft's sigma parameters were made, since both of the latter are also regarded as indication of electronic distribution at the reactive center. The data in general support the view that changes in half-wave potential with structure are due to both electronic and steric effects, as well as perhaps to adsorption phenomena. Significantly, NMR data obtained with one type of substituent could be correlated with E/sub 1/2 data for a similar type of substituent. New NMR data for aliphatic nitro and halogen compounds are reported."
Date:
July 28, 1958
Creator:
Bennett, Eugene C. & Elving, Philip J.
Object Type:
Report
System:
The UNT Digital Library
Polarographic Reduction of Uranium (VI)
"Previous studies of the effect of uranium species on the polarographic behavior of certain organic compounds indicated the advisability of further study of uranium itself. The polarographic reduction of U(VI) to U(V) in acid solution is very sensitive to both type and concentration of anion present. Consequently, the reduction was studied using perchlorate as a non-complexing anion and sulfate as a complexing anion. In HCLO4 solution, increasing the perchlorate concentration shifted E(1/2) to more positive potentials, which seem to correspond to junction potential effects. Increasing either HCLO4 or perchlorate concentrations increased the limiting current slightly, which can be attributed to a high rate of disproportionation of U(V); other factors, e.g., viscosity of the solution, tend to counteract the effect of the disproportionation. In sulfate media, UO2+ is not strongly complexed, the association constant for the U(V)-sulfate complex being 0.15, if UO2SO4 is the most stable uranyl sulfate complex present. The effect of acid on the stability of the uranyl sulfate complex confirmed the existence of the complex as an uncharged species. Limiting currents were pseudo diffusion-controlled, e.g., increasing the solution viscosity by increasing the electrolyte content decreased the current; this is due to the maximum disproportionation rate of U(V) having …
Date:
July 14, 1958
Creator:
Elving, Philip J. & Krivis, Alan F.
Object Type:
Report
System:
The UNT Digital Library
On the Calculation of Properties of Gases at High Temperatures
"The role of the potential of intermolecular force in determining properties of gases at elevated temperatures is discussed. Coefficients of viscosity and self diffusion, isotopic reduced thermal diffusion ratios, and second virial coefficients for helium, argon, and nitrogen at 1,000, 5,000, and 15,000 d K were calculated from extrapolated potentials and from beam potentials."
Date:
August 1, 1958
Creator:
Amdur, I. & Ross, J.
Object Type:
Report
System:
The UNT Digital Library
Progress Report No. XXIII
"Progress is briefly reported on studies in dielectric spectroscopy, magnetic resonance, high-field-strength research, ferroelectrics and ferromagnetics, semiconductors, single crystals, and ceramics."
Date:
June 1, 1958
Creator:
Laboratory for Insulation Research, Massachusetts Institute of Technology
Object Type:
Report
System:
The UNT Digital Library
The Sodium-Cooled, D2O-Moderated Rector (SDR)
"For presentation at the 1958 Nuclear Congress, Nuclear Science and Engineering Conference, March 17The experimental program was focused on the problems of containing the Na, of providing a barrier material with low neutron absorption cross section and an ability to withstand the action of hot Na, of developing an arrangement of this material which is mechanically adequate, and of demonstrating that an integrated barrier system can be safety operated under reactor temperature and pressure conditions. Possible barrier materials were subjected to hot Na jets. Stainless steel, Zr, and Al withstood the jet very well- The experimental arrangements of other tests are shown."
Date:
January 1, 1958
Creator:
Goldmann, Kurt & Leeper, Charles K.
Object Type:
Report
System:
The UNT Digital Library
The Influence of the Molecular Mean Free Path on the Performance of Hydrodynamic Gas Lubricated Bearings
"A modified Reynolds equation is derived for gaslubricated hydrodynamic bearings operating under ''slip flow'' conditions. Closed analytical solutions are given for a Rayleigh-type step-bearing and an inclined plane slider bearing for the case of two-dimensional flow. The influence of the molecular mean free path on the performance of bearings of arbitrary form is obtained by means of a small parameter, perturbation technique"
Date:
June 1956
Creator:
Burgdorfer, Albert
Object Type:
Report
System:
The UNT Digital Library
Summary of All-Union Conference on the Application of Radioactive and Stable Radioisotopes in the National Economy and Science of the Ussr--1957 (Aec-Tr-2925 and Aec-Tr-3093)
"A total of 418 abstracts from this conference and the complete text of five plenary session papers, as well as 55 abstracts from as All-Union Conference on Radiation Chemistry, have been made available in translation in AEC-tr-2925. Almost all of these papers deal with the actual applications of tracers or radiation in the national economy. The papers presented were divided into three major sections: isotope production and high-intensity gamma systems, technical sciences and industrial uses of isotopes, and biology, medicine, and agriculture. A short summary of the papers as to groups is given."
Date:
July 15, 1958
Creator:
Meinke, Wayne, W.
Object Type:
Report
System:
The UNT Digital Library
Mechanical and Thermal Problems of Water-Cooled Nuclear Power Reactors
"Some of the principal problems faced in the mechanical and thermal design of the Shipping port Pressurized Water Reactor core are discussed. The interplay of these problems with the requirements of other technologies is discussed, and areas which need more work are outlined."
Date:
January 1, 1955
Creator:
Palladino, N. J. & Sherman, J.
Object Type:
Report
System:
The UNT Digital Library
Final Report of Seamwelding Development Program on Zirconium Can End Closures
"A satisfactory welding schedule for zirconium can assemblies was demonstrated."
Date:
September 1, 1956
Creator:
Koepenick, F. R. & Goodley, H.
Object Type:
Report
System:
The UNT Digital Library
A Kinetic Study of CO2 Desorption From Thoria
"Desorption rate curves were obtained for carbon dioxide absorbed on thoria at temperatures of 550C, 450C, 350C, 250C, 150C, and 50C. The gas were found to desorb according to a logarithmic law following initial rapid desorption. The logarithmic law may be shown to be operative if the activation energy for desorption varies linearly with surface converge. A large apparent negative entropy of activation for desorption supports the fact that the adsorbed CO2 is in a mobile state."
Date:
April 15, 1958
Creator:
Pitt, C. H. & Wadsworth, M. E.
Object Type:
Report
System:
The UNT Digital Library
Tests of Models of Nuclear Reactor Elements
"Losses have been determined for flow through models of various proposed core sub-assemblies as part of a study of the elements of a nuclear reactor. Six core sections and two axial blanket sub-assemblies have been compared on the basis of drop in piezometric head or pressure drop. The core sub-assemblies are composed of an entrance nozzle, a lower axial blanket section, the core section, an upper axial blanket section, and a short section for the handling lug. The four parts of the sub-assembly other than the core section are designated as the axial blanket sub-assembly. In each core section there are l44 rods within a container which has a square cross section. The primary differences between one core section and another are the means of supporting and spacing the rods. Bars or wires wrapped in spirals around the rods were used as well as a series of grids made up of wires and supported at the four corners. Also, in one core an inner wall was used to provide an annular flow passage which helps to reduce the difference in temperature at the inner and outer walls of the core. The two axial blanket sub-assemblies tested are similar except that …
Date:
July 1957
Creator:
McNown, J. S.; Yagle, H. A. & Spengos, A.
Object Type:
Report
System:
The UNT Digital Library
A Monte Carlo Study of Neutron Thermalization
"The slowing down of neutrons from fission to absorption energies in a homogeneous medium has been treated by a Monte Carlo method. thermalization by elastic collisions in both light and heavy water was computed on an IBM 650. One-sixth the mean-square distance travelled by the neutrons was interpreted as the migration area. This quantity was analyzed to give the age, t, both above and below the indium resonance, and the thermal diffusion constant. D, as functions of the moderator temperature, the effective moderator mass, the moderator composition, the scattering the absorption laws, and the energy distribution of the neutron source. The migration area from the fission eneergy source to below the indium resonance energy (1.46 ov) was found ro be 27.4cm^2 for H2O and 120 cm^2 for D2O. By varying the absorption cross section, the migration area from the indiu, resonance energy to absorption of the neutrons could be decompsed into components D/L^2 and Ts. D and Ts were found to be 0.19 cm and 0.77 cm^2 respectively for H2O and 0.87 cm and 20 cm^2 for D2O. D was found to increase with the thermal agitation of the moderator at the rate of 0.15$/C for H2O and 0.14%/C for …
Date:
January 1, 1957
Creator:
Brown, H. D.
Object Type:
Report
System:
The UNT Digital Library
Tests of Models of Nuclear Reactor Elements
"For a model of a blanket sub-assembly of the proposed AODA reactor, laboratory measurements have been made of the head losses for the blanket element end for the results provide design criteria for liquid sodium which is to be used in the reactor."
Date:
March 1956
Creator:
McNown, J. S.; Yagle, H. A. & O'Dell, W. W.
Object Type:
Report
System:
The UNT Digital Library
Tests of Models of Nuclear Reactor Elements
"These two parts were issued separately, but are cataloged as a unit. For a model of a blanket sub-assembly of the proposed Atomic Power Development Associates reactor, laboratory measurements have been made of the head losses for the blanket element and for the various distributing orifices. Tests with water have been generalized so that the results provide design criteria for liquid sodium which is to be used in the reactor."
Date:
March 1957
Creator:
McNown, J. S.; Yih, C. S.; Yagle, R. A. & O'Dell, W. W.
Object Type:
Report
System:
The UNT Digital Library
Technical Progress Report
"Progress is reported on high-speed computer development, circuit research, mathematical methods, data reduction methods, Illiac use and operation, IBM 650 use and operation, instructional use of computers, and general laboratory information."
Date:
March 1958
Creator:
Digital Computer Laboratory, University of Illinois Graduate College
Object Type:
Report
System:
The UNT Digital Library
Differential Voltammetry Using The Hanging Mercury Drop Electrode
"The general techniques of voltammetry with continuously varying potential have been applied to a differential method in which two electrolysis cells are used, each with a hanging mercury drop electrode. Using this method it is possible to determine lO/sup -6/ solutions with increased precision, and it is also possible to analyze solutions as dilute as 10/sup -6/ without removing oxygen from the electrolysis cells. Mixtures can be analyzed easily by adding individual components of the mixture to the reference cell."
Date:
January 1958
Creator:
Martin, Kenneth J. &
Object Type:
Report
System:
The UNT Digital Library
Precise Vapor Pressure Measurement At High Temperature
"An apparatus using a silica Bourdon gage is described for the measurement of vapor pressures or dissociation pressures with an accuracy of 0.1 mm and 0.1 deg C up to maximum pressures of atmospheric or beyond and maximum temperatures of 650 to 1250 deg C. The method is applicable to corrosive substances, to substances whose vapor pressure is sensitive to slight changes in composition, and to substances difficult to purify of volatile contaminants which affect the vapor pressure."
Date:
November 1, 1957
Creator:
Machol, Robert E.
Object Type:
Report
System:
The UNT Digital Library
Transient Beam Loading In Linear Electron Accelerators
"The subject of beam loading in linear electron accelerators has been discussed. With suitable design it is possible to place the equilibrium electron phase angle well ahead of the crest of the traveling wave in the accelerator. With beam loading the equilibrium position will move toward the crest, but the electron energy will remain constant or nearly so over a considerable range of loading. Some loss in energy will result from moving the equilibrium phase angle off the wave crest but the spread in energies due to beam loading should be reduced.
Date:
May 1957
Creator:
Neal, R.B.
Object Type:
Report
System:
The UNT Digital Library