Resource Type
Serial/Series Title
Atomic Energy Commission Reports
164
Hanford Works Reports
68
University of California Radiation Laboratory Reports
62
Oak Ridge National Laboratory Reports
46
HW (Series)
43
UCRL (Series)
24
Los Alamos National Laboratory Reports
22
AECU (Series)
15
General Electric Company Atomic Power Reports
13
NYO (Series) (New York)
13
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404 Matching Results
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Self-Diffusion in α-Iron During Compressive Creep
"The influence of compressive creep on the self-diffusivity of α-iron has been measured in the temperature range of 742-885°C. the diffusivity is enchanced in proportion to the strain rate, but this dependence decreases with increasing temperature. The magnitude of the strain is relatively unimportant in this connection. Strain rates from 0 to -2 x 10¯³ sec¯¹ were investigated with a corresponding increase in diffusivity up to 3 x 10³ times. The results are analyzed in terms of vacancy diffusion and the excess vacancies introduced during deformation. It is concluded that grain boundaries are the main vacancy sinks in polycrystalline iron and that the vacancy lifetime is therefore dependent on the grain size."
Date:
May 29, 1962
Creator:
Hirano, Ken-ichi; Averbach, B. L. & Cohen, Morris
Object Type:
Report
System:
The UNT Digital Library
Electron Requirements of Bonds in Metal Borides
From abstract: "Electrical measurements have been made on CaB6, SrB6, BaB6, YB2, YB4, YB6, and YB12 for the purpose of testing models of the electronic structure of the boron atoms in the four boride types represented. The compounds CaB6, SrB6, and BaB6 were found to be semiconductors. The Hall coefficients of YB4 was also measured, but could not be interpreted because the free electron theory does not provide a theoretical value for comparison with experiment. The results are in agreement with the models proposed."
Date:
May 28, 1962
Creator:
Johnson, Robert W. & Daane, A. H. (Adrian Hill), 1919-
Object Type:
Report
System:
The UNT Digital Library
Wall and Bulk Temperatures for Fluids Flowing in Concentric Annuli
From introduction: "This brief paper deals with the subject of radial temperature differences for heat transfer to fluids flowing through concentric annuli under the following conditions and assumptions: a. constant heat flux; b. fully-established turbulent flow; c. heat transfer through inner wall only; d. physical properties independent of temperature."
Date:
May 28, 1962
Creator:
Dwyer, Orrington Embry, 1912-
Object Type:
Report
System:
The UNT Digital Library
Calculated Scattering Kernels For Light Water at 23C, 42C, 61C, and 82C
This report contains a listing of the bound-proton kernels for neutron scattering which were calculated in conjunction with the USAEC Control Rod Materials Program.
Date:
May 27, 1962
Creator:
Kerr, B. A.
Object Type:
Report
System:
The UNT Digital Library
Army PWR Support and Development Program Six Months Summary Report : October 1, 1961 - March 31, 1962
Abstract: Progress is reported on research and development tasks under the Program Plan for Engineering Support and Development of Army Pressurized Water Reactor Power Plants, Contract AT(30-1)-2639, during the six months' period October 1, 1061 to March 31, 1962.
Date:
May 25, 1962
Creator:
Dixon, M. H.
Object Type:
Report
System:
The UNT Digital Library
Molecular Spectra and Structure of the Compound, AlH3-2N(CH3)3
This technical report discusses an infrared study of AlH3-2N(CH3)3 while the compound was in its gas phase. This investigation was then extended to include the Raman spectrum observed in liquid trimethylamine.
Date:
May 25, 1962
Creator:
Heitsch, C. W. & Kniseley, R. N.
Object Type:
Report
System:
The UNT Digital Library
A Needle in a Haystack
Abstract: "Production of [rho]'s and [omega]'s in [pi]- + p and p + [letter p with a bar over it] interactions is discussed. The [rho] is presumably a J = 1-, 1 = 1 state and thus can decay into 2[pi]'s via a strong coupling. The [omega] is probably J = 1-, 1 = 0 which can also decay into 2[pi]'s via electromagnetic coupling. A theoretical description of this situation is presented in terms of coupled time-dependent Schroedinger equations which mix [rho] and [omega] states that are assumed to be isotopically pure at the time of production. The interference between the two resonances was found to have the effect of extending the 2[pi] spectrum toward the [omega] mass."
Date:
May 25, 1962
Creator:
Bernstein, J. & Feinberg, Gerald, 1933-1992
Object Type:
Report
System:
The UNT Digital Library
Development of Techniques for Power Production From Mixed Fission Products
"Progress is reported on Phase II of a program for the development of a mixed fission product fueled thermoelectric generator. Materials studies are described in which bonded assemblies of bismuth telluride were life tested up to 3000 hours at 350 to 400 deg F hot junction temperature. Data were too inconsistent to define any satisfactory long-life bonding process. Further work is needed to eliminate the process variables. Insulation studies aimed at determining the thermal conductivity of various insulations with different fill gases under reduced pressures are described. Opacified aerogel powder appears to be very promising as an insulation medium for a diffuse heat source. A full- scale simulated test generator aimed at proving out the concept of a diffuse heat source for power generation is described. Progress on the construction of this electrically heated generator and its thermoelectric power converter is related.
Date:
May 21, 1962
Creator:
Lemanski, E. J.
Object Type:
Report
System:
The UNT Digital Library
Facility Availability Brookhaven Graphite Research Reactor: January 1951 - March 1962
This technical report details and outlines the BGRR facility's operations and performance record over a period of twelve years. The author of this report finds that the reactor is "one of the most stable and dependable in the business." The report includes two figures.
Date:
May 18, 1962
Creator:
Thompson, Dudley
Object Type:
Report
System:
The UNT Digital Library
Cation Exchange in Acetone-Water-Hydrochloric Acid
Abstract: Distribution coefficients have been measured for the partition of metal ions between cation exchange resin and acetone-water-hydrochloric acid solutions. the differences in distribution coefficients of metal ions are greater in acetone-water media than in aqueous media of the same hydrochloric acid concentration. Using distribution coefficient data, conditions for column separations of mixtures can be selected. Column separations of metal ion mixtures can be effected by eluting with acetone-water-hydrochloric acid solutions of different compositions. Successful separations of a number of mixtures are reported.
Date:
May 10, 1962
Creator:
Fritz, James S. (James Sherwood), 1924- & Rettig, Thomas A.
Object Type:
Report
System:
The UNT Digital Library
Design of Reflectometers for Coaxial Lines Used at AGS LINAC
This report describes the design procedure for a reflectometer or directional coupler to replace the probe part of the D07-1020 assembly used at the Brookhaven Alternating Gradient Synchrotron linac. Mathematical treatment and diagrams of various reflectometers are included.
Date:
May 9, 1962
Creator:
Walters, J. L.
Object Type:
Report
System:
The UNT Digital Library
Some Properties of Stub Tuners Which Can Be Displayed On Smith Charts
Use of the Smith chart in studying stub tuners is demonstrated. Several properties of the tuners are shown, and charts for various wave length spacings, tuning trajectories, and admittances are included.
Date:
May 9, 1962
Creator:
Walters, J. L.
Object Type:
Report
System:
The UNT Digital Library
The Ball Tuner Change Tables
Technique used in deriving values of the linac ball tuner settings to produce various fields is discussed briefly, and tables showing ball tuner change numbers and values used in making up the ball tuner change numbers are given.
Date:
May 3, 1962
Creator:
Walters, J. L.
Object Type:
Report
System:
The UNT Digital Library
Application of Boron Carbide Nickel Dispersion to a Prototype Control Rod
Previously reported results on the testing of small samples of boron carbide dispersed in nickel by electrolytic codeposition were adequately encouraging to lead to the development of a prototype control rod for operation in the Vallecitos Boiling Water Reactor. The operation of the control rod has been entirely satisfactory.
Date:
May 1962
Creator:
Williamson, H.E. & Alexander, A. J.
Object Type:
Report
System:
The UNT Digital Library
The Calculation of Some Bessel Functions for Criticality Problems
Abstract: An easy to use method for evaluating Bessel functions is given. This method is applicable to the one-dimensional, 2-group, 2-region diffusion problem, and is designed primarily for use on a small or medium sized digital computer. ...FORTRAN programs based on this method are presented together with the output obtained from an IBM-1620 digital computer.
Date:
May 1962
Creator:
Katine, Edward.
Object Type:
Report
System:
The UNT Digital Library
Economic Evaluation of Control Rod Materials and Fabrication Processes
Control rod materials, designs, and fabrication processes are compared for their relative economies. Control rod lifetime data are calculated with a simple approximation of nuclear worth depreciation. These data are used in conjunction with the estimated fabrication costs to determine the cost of using several absorber materials in a typical power reactor on a cost-per-year basis. The effect the control system has on core power density and fuel lifetime is included.
Date:
May 1962
Creator:
Williamson, H. E. & Megerth, F. H.
Object Type:
Report
System:
The UNT Digital Library
Effect of Oxygen on Mechanical Properties of Niobium
From abstract: "The effects of oxygen on some mechanical properties of niobium were studied over the composition range of 20 ppm to 2400 ppm oxygen. The tensile properties of samples of these compositions were studied over the temperature range from room temperature to 500°C. Hardness values were obtained at room temperature only. The following observations and conclusions were made during these studies: 1. Oxygen additions to high purity niobium increase both the yield and tensile strengths of niobium at all temperatures investigated. As the temperature is increased above 250°C the effect of the first 200 ppm of oxygen has more influence than further additions on these strengths of niobium. 2. Strain aging behavior is observed. The peaks in the tensile strength versus temperature curves can be predicted with reliability by the relationship proposed by Cottrell, 3. A mechanism is proposed which, along with Cottrell's segregated atmosphere mechanism, can account for the serrated stress-strain curves obtained. This mechanism offers an explanation of the occurrence of serrations at room temperature, and the mechanism is composition dependent."
Date:
May 1962
Creator:
Neubauer, Edwin Paul & Wilhelm, H. A.
Object Type:
Report
System:
The UNT Digital Library
Laboratory Tests of the Use of Victorian Brown Coal for Removing Traces of Radioactivity from Water
Measurements were made of the capacity of pre-treated Victorian brown coal for removing trace quantities of Sr2+ and Cs+ at pH 8.0 and 9.5 in the presence of various concentrations of Ca2+. At 20 p.p.m. Ca2+ breakthrough was immediate.
Date:
May 1962
Creator:
O'Keffe, J.
Object Type:
Report
System:
The UNT Digital Library
Measurement of the Rate of the Reaction µ + c 12 --> B 12 +
"The properties of the muon have been studied for many years and much is now known about this particle. Very accurate measurements of its mass and magnetic moment gave values in the relationship predicted by the Dirac equation and quantum electrodynamics. Experimental evidence indicating that the muon spin is 1/2 is obtained from comparison of precession measurements of the muon bound in certain mesic atoms and from observation of muonium precession. To all appearances, one would conclude that the muon behaves as an unstable electron, but as 206.76 times the mass of that electron. A study of the interaction of the muon with nuclear matter may throw more light on this problem of muon-electron equivalence."
Date:
May 1962
Creator:
Maier, Eugene J. R.
Object Type:
Report
System:
The UNT Digital Library
Preliminary Experiments on the Dissolution of Beryllium Based Fuels in Ammonium Fluoride Solutions
Some preliminary measurements have been made of the rate of dissolution of beryllium when refluxed with ammonium fluoride solution. The rate of dissolution exhibits pseudo first order dependence on the "free" fluoride concentration defined as the concentration of total fluoride less that assumed to be present as BeF4. The solubility of uranium metal in ammonium fluoride - beryllium fluoride solutions increases with free fluoride concentration, where the uranium is present in solutions as U(1V). Thorium metal is attacked only slightly under similar conditions. Beryllium may be selectively leached from UBe13 by ammonium fluoride solutions if the fine A-/Be mole ratio is greater than 4:1. The solubility of uranium under these conditions suggests that this is not a satisfactory solvent for mixtures of these alloys with Be when the U/Be ratio is small, but that it could be used successfully as a decladding agent for an oxide fuel clad in beryllium meta.
Date:
May 1962
Creator:
Whitfield, H. J.
Object Type:
Report
System:
The UNT Digital Library
Synchrotron Oscillations
Some numerical calculations have been done which permit the deduction of many properties of the synchrotron oscillation problem. For the presentation of the numerical results, it is useful to review the formulation framework to which the results are to be fitted. These are worked out for an arbitrary circular accelerator. The algebra woud have to be modified slightly to include straight sections but the numerical results are still useful.
Date:
May 1, 1962
Creator:
Hochman, E. H. & Barton, M. Q.
Object Type:
Report
System:
The UNT Digital Library
Magnetic Properties of Insulators : Quarterly Report No. 1 Covering the Period from February 15, 1961 to May 15, 1961
"The magnetic properties of color centers were studied to obtain information regarding electron traps in insulators. Experiments designed to determine the equation governing the recovery of resonance after saturation were carried out. Relatively large samples were prepared by the method of additive coloration. KCl and RbCl crystals were used. Resonance saturation as a function of concentration was investigated and no significant dependence found. Measurements of the unsaturated susceptibility were made at liquid nitrogen and liquid helium temperatures. The bleaching of the F-center to form the B-band produced a different resonance. The equipment for observing the saturation and recovery of a portion of the resonance at 4 deg K is described. A theoretical examination was made of the interaction between the vibration of the ions around a negative-ion vacancy in an alkali halide and an electron trapped at that site. (M.C.G.)."
Date:
May 29, 1961
Creator:
Markham, Jordan J.
Object Type:
Report
System:
The UNT Digital Library
Thorium Breeder Reactor Evaluation. Part I. Fuel Yield and Fuel Cycle Costs in Five Thermal Breeders
The performances of aqueous-homogeneous (AHBR), molten-salt (MSBR), liquid-bismuth (LBBR), gas cooled graphite-moderated (GGBR), and deuterium-moderated gas-cooled (DGBR) breeder reactors were evaluated in respect to fuel yield, fuel cycle costs, and development status. A net electrical plant capability of 1000 Mwe was selected, and the fuel and fertile streams were processed continuously on-site.
Date:
May 24, 1961
Creator:
Alexander, L. G.; Carter, W. L.; Chapman, R. H.; Kinyon, B. W.; Miller, J. W. & Van Winkle, R.
Object Type:
Report
System:
The UNT Digital Library
Thorium Breeder Reactor Evaluation. Part I. Fuel Yield and Fuel Cycle Costs in Five Thermal Breeders. Appendices
The performances of aqueous-homogeneous (AHBR), molten-salt (MSBR), liquid-bismuth (LBBR), gas-cooled graphite-moderated (GCBR), and deuterium-moderated gas-cooled (DGBR) breeder reactors were evaluated in respect to fuel yield, fuel cycle costs, and development status. A net electrical plant capability of 1000 Mwe was selected, and the fuel and fertile streams were processed continuously on-site.
Date:
May 24, 1961
Creator:
Alexander, L. G.; Carter, W. L.; Chapman, R. H.; Kinyon, B. W.; Miller, J. W. & Van Winkle, R.
Object Type:
Report
System:
The UNT Digital Library