Resource Type
Collection
Serial/Series Title
Atomic Energy Commission Reports
159
Hanford Works Reports
70
University of California Radiation Laboratory Reports
60
HW (Series)
51
Oak Ridge National Laboratory Reports
38
BMI (Series)
25
Battelle Memorial Institute Reports
25
General Electric Company Atomic Power Reports
25
GEAP (Series)
24
UCRL (Series)
22
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388 Matching Results
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The Dibutyl Carbitol Extraction Procedure for the Separation of Tubanyl and Phosphate Ions
"This report is concerned with the effectiveness of this washback procedure in reducing the phosphate concentration and also with other methods by which the simultaneous extraction of phosphate along with tuballoy may be minimized."
Date:
July 12, 1945
Creator:
Lord, E. J.; Andrews, L. J. & Gates, J. W.
Object Type:
Report
System:
The UNT Digital Library
Diffusion of Ions in a Plasma Across a Magnetic Field
A theoretical and experimental investigation of the coefficient for diffusion of ions across a magnetic field Is described. The resultant diffusion coefficient is found to vary inversely as the square of the magnetic field strength, in accord with the usual collison-diffusion theory. The magnitude of the coefficient is much larger (x700) than the coefficient predicted by the usual ambipolar diffusion theory. This discrepancy is resolved by showing that diffusion across a magnetic field is not ambipolar in character in most arc experiments. The final experimental and theoretical values are in good agreement, and it is unecessary to postulate any additional diffusion mechanisms, such as plasma oscillations.
Date:
July 1955
Creator:
Simon, Albert & Neidign, Rodger V.
Object Type:
Report
System:
The UNT Digital Library
Disassembly of the Los Alamos Fast Reactor
The procedures used in the complete and permanent disassembly of the Los Alamos Fast Reactor are described.
Date:
July 1953
Creator:
Jurney, Edward Thornton, 1921-; Arnold, G. P.; Corpieri, E. F.; Leachman, R. B.; Pierce, E. H.; Montoya, J. et al.
Object Type:
Report
System:
The UNT Digital Library
Dissolution of Aluminum-Canned Thorium
The following report studies the dissolution of aluminum-canned thorium, providing results that suggest a dissolution cycle that permits the separation of the canned-slug components.
Date:
July 26, 1955
Creator:
Beach, John G.; Schickner, William C. & Faust, Charles L.
Object Type:
Report
System:
The UNT Digital Library
Dissolution of Uranium Oxide Arising From Slug Failure
The purpose of this work was to study reagents which might be effective in dissolving uranium oxide produced during slug failures in water-cooled reactor systems. An aspect of this problem which has subsequently become of primary importance is the solubility or transportability of the oxide in pure water.
Date:
July 1953
Creator:
Johnston, F. J.; Wills, P. E. & Katz, Joseph J. (Joseph Jacob), 1912-2008
Object Type:
Report
System:
The UNT Digital Library
Division of Reactor Development Programs Monthly Reports-June 1959
Basic Studies. Sinterability experiments in the system UO2-PuO2 have continued, and data are available at one hour hold times across the UO2-PuO2 composition limits. Sintered densities appear to be markedly dependent on pressed densities with densification occurring very rapidly at higher pressing pressures. The following table illustrates the effect of one hour at temperature on final density for pure plutonium dioxide pressed to both 40 and 60 percent of theoretical density.
Date:
July 15, 1959
Creator:
Lewis, M.
Object Type:
Report
System:
The UNT Digital Library
The Ductility of Brazed Stainless Steel Joints
Abstract: "The ductility of Type 310 stainless steel T-joints brazed with GE-62 brazing alloy was measured at room temperatures 1200, 1650, and 1800 F. The measure of ductility was taken as the plastic axial strain required to crack braze fillets in T-section tensile specimens. At elevated temperatures, the ductility of as-brazed joints approximated that of the stainless steel, but at room temperature the brazed joints had only one-tenth the ductility of the base metal. Annealing for 16 hr at 1800 F in air was found to triple the room-temperature ductility of the brazed joint."
Date:
July 8, 1953
Creator:
Saller, Henry A.; Stacy, J. T. & Eddy, N. S.
Object Type:
Report
System:
The UNT Digital Library
Effect of Ceramic or Metal Additives in High-UO₂ Bodies
The following report focuses on research made to determine whether the service performance of UO₂ fuel-elements cores for the PWR can be improved by certain ceramic or metal additions.
Date:
July 24, 1956
Creator:
Bowers, Donald J.; Hedden, Walter A.; Snyder, M. Jack & Duckworth, Winston H.
Object Type:
Report
System:
The UNT Digital Library
Effect of Core Corrosion Sample Assembly on HRT Critical Concentration
An estimate has been made of the critical fuel concentration in the HRT, taking into account the effect of the core corrosion sample assembly. The estimate is based on a number of previous calculations of critical concentration in an un-poisoned reactor and one calculation of critical concentration as a function of poison level. The makeup of the first core corrosion sample assembly was used in calculating equivalent neutron poisoning effects. Figure 1 shows the estimated critical concentration as a function of temperature with the corrosion sample assembly in place. At 280°C, the assembly raises the critical concentration by 0.6 g U-235/kg D2O. This effect is equivalent to a uniformly distributed poison equal to 4.1% of the fission cross section. The equivalent poison is greater at lower temperatures, where the uranium concentration is lower.
Date:
July 18, 1957
Creator:
Haubenreich, Paul N.
Object Type:
Report
System:
The UNT Digital Library
The Effect of Gaps on Pile Reactivity
From abstract: "The variation of the reactivity of a pile as a function of width of a transverse gap is obtained. The method involves first finding the boundary condition satisfied by the flux at the gap face. This, in principle, provides enough information for a complete solution of the pile equations. A method for calculating the reactivity change is presented. The calculated reactivity is compared with experiment and a brief discussion of the validity of the approximations is given."
Date:
July 14, 1952
Creator:
Tamor, S. & Ergen, W. K.
Object Type:
Report
System:
The UNT Digital Library
Effect of pH and Concentration of Ammonium Persulfate on Colorimetric Determination of Nickel by Dimethylglyoxime Method
The following report records the study of the optimum pH of the method of the colorimetric dimethylglyoxime for nickel before the addition of oxidant and the concentration of ammonium persulfate needed to insure complete oxidation to higher nickel valence states and thus prevent precipitation of less soluble nickelous salt that was made. Results of this study is presented in Table 1.
Date:
July 30, 1952
Creator:
White, J. C.
Object Type:
Report
System:
The UNT Digital Library
Effect of Plasma Oscillations on the Table-Top Model
The following report describe the effect of plasma oscillations using a table-top model and the probable magnitude of the quantities needed to reach complete ionization.
Date:
July 31, 1952
Creator:
Spitzer, Lyman, Jr.
Object Type:
Report
System:
The UNT Digital Library
Effect of Plutonium on the Fluorometric Determination of Uranium
The fluorometric method for determining microgram quantities of uranium dissolved in concentrated sulfuric acid was reinvestigated for the purpose of measuring any interference caused by plutonium in uranium samples. No plutonium fluorescence, and therefore no positive errors due to plutonium, were observed. Limited transmittance of hexavalent plutonium in sulfuric acid at 513, and especially at 360 millimicrons, produces variable negative errors in uranium determinations.
Date:
July 1954
Creator:
Bergstresser, K. S. (Karl Samuel), 1909-2004
Object Type:
Report
System:
The UNT Digital Library
The Effect of Radiation on the Corrosion of Metals by Water
Technical report. Long-time tests have been made on the effect of various types of radiation on the corrosion of 2S aluminum in simulated W water. In no case was any acceleration of corrosion by the radiation observed; the effect of radiation, if any, appeared to be a protective one. Deuteron irradiation did accelerate the corrosion of mild steel at low flow rates in hot water of pH 6 to 7, but no appreciable effect was observed with copper, stainless steel, or tuballoy. The general theory of the effect of radiation on corrosion is discussed, with the conclusion that no acceleration of corrosion by radiation is to be expected in most cases of practical interest.
Date:
July 6, 1944
Creator:
Allen, A. O. (Augustine O.); Bowman, M. C.; Goldowski, Nathalie; Larson, R. G. & Treiman, L.
Object Type:
Report
System:
The UNT Digital Library
The Effects of Internal Conversion on Critical Mass and Operating Life of a Thermal Reactor
"This report was prepared for preliminary use only in the course of work under W31-109 Eng. 52, and the information contained herein may not be correct or in agreement with more recent experimental and operating data. Any values or opinions expressed in the report may only be those of the author, and the General Electric Company makes no representation or warranty (1) as to the value of this report for any purpose or (2) that any use of the report will not infringe the rights of others."
Date:
July 21, 1952
Creator:
Snyder, T. M.
Object Type:
Report
System:
The UNT Digital Library
Elastic Scattering of 7 Mev Neutrons (Theoretical Curves)
Abstract: "Theoretical differential cross-sections computed from the optical model for 7 Mev neutrons are presented for a large number of nuclei. The parameters used for the calculations were selected on the basis of best fit to existing experimental data."
Date:
July 1957
Creator:
Bjorklund, F. & Fernbach, Sidney, 1917-1991
Object Type:
Report
System:
The UNT Digital Library
Elastic Scattering of 14 Mev Neutrons (Theoretical Curves)
Abstract: "Theoretical differential cross-sections computed from the optical model for 14 Mev neutrons are presented for a large number of nuclei. The parameters used for the calculations were selected on the basis of best fit to existing experimental data."
Date:
July 1957
Creator:
Bjorklund, F. & Fernbach, Sidney, 1917-1991
Object Type:
Report
System:
The UNT Digital Library
Electron-Population Analysis and the Dipole Moment of the LiH ¹Σ⁺ Excited State / A.M. Karo
Abstract: "Detailed consideration is given to some properties of the first excited electronic state. Following the analysis proposed bv Mulliken, SCF LCAO-MO coefficients are used to obtain qualitative information about the electron distributions. Comparison is made with earlier work with respect to the description of the excited-state dipole moment, the effective electric moment between the ground and excited states is also calculated. From this, the oscillator strength for the first allowed transition is computed as a function of the internuclear distance."
Date:
July 1959
Creator:
Karo, Arnold M.
Object Type:
Report
System:
The UNT Digital Library
The Electronic Energy Levels and the Mass Spectrum of Methane
Recent instrumental developments and theoretical speculation have indicated a need for more information concerning the excited electronic states of polyatomic molecules and ions in the elucidation of mass spectra. A theoretical description of these states is necessary for the proper interpretation of existing data and in laying a firm basis for the planning of future experiments. For the above reasons the energies of a number of the excited electronic states of methane have been calculated in a approximate fashion and the results applied to a discussion of the behavior of the methane ion.
Date:
July 1954
Creator:
Krauss, Morris; Wahrhaftig, Austin L. & Eyring, Henry, 1901-1981
Object Type:
Report
System:
The UNT Digital Library
The Emf of Cells with Uranium: Uranium Halide Couples in Fused Salt Electrolytes
The emf of galvanic cells at high temperatures was measured using uranium metal in equilibrium with its chloride as one half of the cell, the other half of the cell being some reference electrode such as silver - silver chloride. Several designs of cells tried are described. A value of 2.83 volts/eq. at 1170[degree]K and also at 990[degree]K is considered as the most probably value for the potential of the uranium halide couple.
Date:
July 31, 1947
Creator:
Eastman, E. D. (Ermon Dwight), 1891-1945.; Campbell, J. A.; Cubicciotti, D. D. & Sienko, Michell J.
Object Type:
Report
System:
The UNT Digital Library
Emission Rate of Fission Products from a Hole in the Cladding of a Reactor Fuel Element
It is assumed that when a hole appears in the cladding of a reactor fuel tube the fission products in the space between the fuel and the cladding will diffuse towards the hole. There they are swept away by the flow of steam past the hole. The process of diffusion is assumed to be governed by the ordinary diffusion equation with the boundary condition that the density of the fission products is zero at the surface of the hole. The diffusion equation is solved for the case of steady-state emission for a number of geometrical arrangements: long slit in plane surface; long slit in cylindrical surfaces circular hole in plane surface; circular hole in cylindrical surface; hole at end of cylindrical fuel rods and diffusion space of variable thickness. The time dependent solution of the diffusion equation is also found for a planar diffusion space. The effect of a temperature gradient is discussed.
Date:
July 26, 1956
Creator:
Helstrom, Carl W.
Object Type:
Report
System:
The UNT Digital Library
Emission Spectroscopic Analysis of Hydrogen - Deuterium Mixtures
The following report discusses a method developed by Broida and Moyer, the method describes an emission spectrometer procedure for the determination of the ratio 100 D/(H4D).
Date:
July 30, 1951
Creator:
Parodi, J. A.; Burch, W. G.; Kendall, L. F. & Leboeuf, M. B.
Object Type:
Report
System:
The UNT Digital Library
Energy Spectrum of 320 Mev Deuterons From He3
The previous calculation of the energy spectrum of the high energy deuteron beam from the stripping of He3 (UCRL-2150) was thought to be in error, especially as regards the low energy tail, on the basis of some experiments with the neutron time-of-flight detector, which indicated a considerably narrower spectrum than that calculated in UCRL-2150. Since the value used for the attenuation cross section of deuterons in uranium is considerably lower than that presently considered correct a new calculation was made using this latter cross section. Since the equations used in this new calculation differ somewhat from those used in the previous report a brief derivation is given here.
Date:
July 17, 1953
Creator:
Lee, John
Object Type:
Report
System:
The UNT Digital Library
An Enhanced Magnetic Mirror Machine
Abstract: "A dc magnetic mirror machine has been built and tested by the ARC Research Group. Radiofrequency enhancement has been included in the design through the use of rf plates in the vacuum chamber of the machine. For the proton beams of the order of 1[mu]a, the mirror action has been observed as a function of both the rf voltage and the magnitude of the mirror field relative to the main magnetic field. Current measurements were performed with the aid of a Faraday cup with suitable bias grids."
Date:
July 15, 1954
Creator:
Ford, Franklin C.
Object Type:
Report
System:
The UNT Digital Library