Resource Type
Collection
Serial/Series Title
Atomic Energy Commission Reports
153
University of California Radiation Laboratory Reports
68
Hanford Works Reports
56
HW (Series)
40
UCRL (Series)
34
Oak Ridge National Laboratory Reports
31
Los Alamos National Laboratory Reports
23
ORNL (Series)
19
AECU (Series)
14
Battelle Memorial Institute Reports
14
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Degree Level
362 Matching Results
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Slowing Down of Neutrons
From introduction: "The Boltzmann equation expressing conversation of particles in phase space is set up."
Date:
August 18, 1941
Creator:
Breit, G.
Object Type:
Report
System:
The UNT Digital Library
Report on Determination of Densities of Several Uranium Compounds
This technical report details a process in order to determine the densities of several uranium compounds.
Date:
August 10, 1942
Creator:
Priest, Homer F. & Priest, G. L.
Object Type:
Report
System:
The UNT Digital Library
The Extraction Method of Purification of Uranyl Nitrate
Technical report. Three extractions of a diethyl ether solution of uranyl nitrate with small portions of water are effective in removing rare earths, as is shown by radio-gadolinium and radio-europium tracer experiments. A study of representative ethers, alcohols, ketones, and esters showed that diethyl ether and a mixture of 85% ethyl methyl ketone with 15% xylene are the best solvents for the extraction.
Date:
August 28, 1942
Creator:
Myers, L. S., Jr.; Anderson, K. C.; Wexler, Sol & Boyd, G. E.
Object Type:
Report
System:
The UNT Digital Library
Polarographic Determination of Uranium in Dust Samples
Abstract: "Samples of dust are collected from the atmosphere with a Mine Safety Appliance Co. electrostatic precipitator and analyzed for uranium by means of a dropping mercury electrode apparatus. Two to three micrograms of uranium can be detected in a cell solution volume of 1 ml. Iron, nickel and chromium present in shop dusts do not interfere. Copper may interfere if present in excess but may be removed by a sulfide precipitation. Directions for preparation of cell solution and operation of the Polarograph are given. The polarographic method described may be used for determination of uranium in samples other than atmospheric dusts."
Date:
August 30, 1943
Creator:
Smith, Stanton B.
Object Type:
Report
System:
The UNT Digital Library
Distribution Coefficient of Dâ‚‚O Between Triethylamine and Water
Summary: "Water containing 1.8% D2O was distributed between the two liquid phases formed with triethylamine at 20 and 35 C. The triethylamine was removed from each phase by aseotropic distillation with benzene before analyzing the water by determining its density with a quartz float. The ratios of the concentrations of the D2O in the water layer to that in the amino layer were 1.007 and 1.004 at 20 and 35, respectfully. The differences from unity are about the same as the errors of analysis."
Date:
August 31, 1943
Creator:
Carlson, H. C.
Object Type:
Report
System:
The UNT Digital Library
The Distribution of Thermal Neutrons in a Slug with Thick End Caps
The distribution of thermal neutrons in a W slug having a one centimeter aluminum end cap has been calculated on the basis of simple diffusion theory. It is found that the average neutron density, and therefore the power output, at the end of the slug is about 34% higher than the density far from the end cap. This result agrees well with the recent Argonne pile experiments (CP-1729).
Date:
August 3, 1944
Creator:
Wilkins, J. Ernest, Jr., 1923-2011
Object Type:
Report
System:
The UNT Digital Library
Temperature and Heat Flow in a Graphite Electrode
In making various experimental heat studies a power producing metal slug is simulated by a slug with a graphite rod electrode of 3/8" diameter inserted lengthwise through it. There is a helium filled annular space between the graphite and the inner surface of the slug cylinder. Radiant heat passes from the electrode to the metal; with proper adjustment of the electrode current the slug in the steady state will therefor "produce" the same amount of energy from its exterior surface as it would under operating conditions. The question arises, however, as to how uniform the electrode temperature is along its length. And also, in some cases one end of the electrode is embedded in the slug metal; it is then desirable to know how much heat flows by conduction from the electrode into the slug.
Date:
August 3, 1944
Creator:
Schlegel, R.
Object Type:
Report
System:
The UNT Digital Library
Identification and Crystal Structure of Barium Hydrogen Phosphate
From abstract: "The report describes the complete structure of barium hydrogen phosphate, Ba HPO4, as determined by means of x-ray diffraction. The crystal is orthorhombic, with cell dimensions given by a=5.71 A b=7.05 A c=4.61 A. The calculated density is 4.15gm/cm[^]3 for two molecules in the unit cell. The space group is C[subscript]2v[superscript]7-pmn. The barium, phosphorus, and two sets of oxygen lie in the plane of symmetry. The third set of oxygens are in general positions. Parameters for these atoms have been found, and interatomic distances calculated. The positions of the hydrogens are indicated by the characteristics O-H-O distance (2.58A) between two oxygens."
Date:
August 8, 1944
Creator:
Mooney, Rose C. L.; Compton, A. H.; Allison, Samuel King, 1900-1965; Stearns, J. C. & Zachariasen, William H. (William Houlder), 1906-1979
Object Type:
Report
System:
The UNT Digital Library
Neutron Emission by Polonium Oxide Layers
The following report calculates how many neutrons are produced by the O-16([alpha]-n) reaction in a thin and uniform polonium oxide layer.
Date:
August 8, 1944
Creator:
Argo, M. & Teller, E.
Object Type:
Report
System:
The UNT Digital Library
Metallurgical Laboratory, Chemical Research - Analytical, Report for the Month Ending July 1, 1944
Technical report containing short reports on (1) Mass spectrometer studies; (2) Purification of heavy water; and (3) Equilibration studies.
Date:
August 11, 1944
Creator:
Hogness, T. R. (Thorfin Rusten), 1894-; Ashcraft, E. B.; McKinney, D. S. & Voskuyl, R. J.
Object Type:
Report
System:
The UNT Digital Library
Electrolytic Production of Uranium from Solutions of its Tribromide in Fused Salts
Abstract. the electrodeposition of uranium metal, in the form of tree-like deposits, from molten strontium halide baths is described. Under the best conditions studied, approximately 40% recovery is attained. Freedom from side-reactions of the reduced uranium with anode products and/or refractory materials, and high cathode current densities appear to be essential to the success of the process. the refining of uranium under similar conditions appears to occur quite readily, with approximately 50% current efficiency. The preparation of UI3 is also described.
Date:
August 15, 1944
Creator:
Webster, Richard A.
Object Type:
Report
System:
The UNT Digital Library
Further End Cap Temperature Calculations
Abstract. Recently (CP-1989) it has been shown that the neutron density, and thus the heat production, at the end of a slug with an A1 cap may be appreciably higher than that at the middle of the slag. A re-examination of earlier temperature calculations is made in light of this effect.
Date:
August 16, 1944
Creator:
Karush, William; Monk, A. T. & Wilkins, J. Ernest, Jr., 1923-2011
Object Type:
Report
System:
The UNT Digital Library
Warping Instability in Long Rods
Abstract. If a pile rod gets bowed within its cooling tube it becomes warmer on the side which approaches the tube wall, and thermal expansion tends to warp it in the same direction as the original displacement. This was discussed roughly in N-601, and it was there concluded that the mechanism was not important for an isolated short slug. In connection with current development of continuous jacket (cartridge) assemblies, it seems desirable to look at this question again. In this case it is possible that the effect may be of some concern.
Date:
August 17, 1944
Creator:
Young, Gale Jay
Object Type:
Report
System:
The UNT Digital Library
Preparation of Carrier Free Zr-Cb Tracer, Problem Assignment No. 263-X61C, Progress Report
Technical report abstract. A rapid procedure for the preparation of very pure carrier-free Zr and Nb tracer involves the chloroform extraction of the cupferrides of Zr and Nb activities from process solutions. Zr and Nb form very stable chloroform soluble cupferrides in acid solutions (CK-993) and are separated from other fission elements almost quantitatively to yield pure mixture of Zr and Nb activity. A minimum of operations is required and the method is easily adaptable to remote control.
Date:
August 28, 1944
Creator:
Marinsky, Jacob A. (Jacob Akiba), 1918-2005 & Ballou, Nathan Elmer, 1919-
Object Type:
Report
System:
The UNT Digital Library
Production and Properties of Ceramic Bodies of Alkaline Earth and Other Refractory Oxides
Report discussing the properties and methods of forming ceramic bodies of alkaline earth and other refractory solids. These materials can be used for "reaction chambers, crucibles for melting metals, casting solids, insulation shields, thermocouple shields and other heat resistant bodies...High calcium lime was found to have the necessary chemical and thermal properties for many of the above uses."
Date:
August 1945
Creator:
Keller, W. H.; Peterson, David & Handlin, Louis
Object Type:
Report
System:
The UNT Digital Library
Vacuum Probe, Standard Leaks, and Needle Valve for Use with the Helium Leak Detector
The following report is split into four parts describing the usage of a vacuum probe for leak hunting with the Helium Leak Detector, the two types of Standard Leaks that were designed to measure the sensitivity of the detector, the development of a needle valve adjusted for controlling the flow of a standard mixture of helium and air into the leak detector for a sensitivity check by the single leak method, and a worm and gear adjustment developed to facilitate throttling of the Helium Leak Detector on a vacuum header equipped with the 3/8" Kerotect angle valve.
Date:
August 1945
Creator:
Samuel, A. J.
Object Type:
Report
System:
The UNT Digital Library
A Direct Current Emission Regulator
The following report describes a current beam modulation designed to replace the standard regulator and to achieve an ion beam free from amplitude modulation.
Date:
August 4, 1945
Creator:
White, J. R. & Cameron, A. E.
Object Type:
Report
System:
The UNT Digital Library
The Metal-Dielectric Junction of High-Voltage Insulators in Vacuum and Magnetic Field
From introduction: "This study is concerned with the shape of the electrodes of high-voltage insulator and with the method of joining them to the dielectric. The study is limited to insulators operating in vacuum, with special interest in the cases where strong magnetic fields are present. It is further limited to insulators with the high-voltage electrodes maintained at negative potential. The object of the study was to obtain information that would aid in improving the design of the insulators in two respects. First, to decrease to a minimum the number of charged particles set free which may directly or indirectly cause early failure of the insulator. Second, to increase the voltages at which partial or complete flashovers occur. Therefore, experiments were made to determine the principal phenomenon which have as their primary source the insulator under high electrical stress in vacuum."
Date:
August 8, 1945
Creator:
Kjofoid, M. J.; Alger, Raymond S. & Graves, D.
Object Type:
Report
System:
The UNT Digital Library
Crystal Structures of Some Uranium Compounds : a Summary from the Ames Laboratory
Introduction. Some forty different uranium compounds have now been given diffraction study at Ames. Reports of these investigations are scattered in the Project literature; many have been reported in a sentence or two as a note along with chemical or metallographic reports. To make the results of this crystal structure work more available this summary of the Ames work has been compiled. (A similar summary has already been published from the Chicago laboratory.)
Date:
August 15, 1945
Creator:
Rundle, R. E.; Baenziger, N. C. & Wilson, A. S.
Object Type:
Report
System:
The UNT Digital Library
The Aluminum Nitrate Process for the Conversion of Tuballoy Tetrafluoride to Tuballoy Peroxide
The following report describes an experiment on the aluminum nitrate process for the conversion of tuballoy tetrafluoride to tuballoy peroxide and the solutions resulting.
Date:
August 22, 1945
Creator:
Lord, E. J.; Andrews, L. J. & Gates, J. W.
Object Type:
Report
System:
The UNT Digital Library
The Effect of Geometry and Voltage Variations on the Operations of the Phillips Ion Gage
Abstract: "The study of ten P.I.G. geometries with copper electrodes and d.c. voltage indicates that from a pressure of 0.1 to about 3.0 microns, depending upon the gage, there is a consistent change in the air pressure-current characteristics of a P.I.G. as the geometry and voltage are changed. At higher pressures discontinuities appear in the gage current and prohibit its use as a pressure gage. In all useful geometries, the greater the applied voltage above 1000 volts, the shorter the useful portion of the pressure-current curve became. Below 1000 volts the curve tended to be unstable. With other conditions constant, the pressure limit increased as the cathode separation decreased and as the anode diameter increased. The empirical equation for the current in certain Philips Ion Gages at certain pressures and voltages is I = a'Pe-p/b where I is the current, P the pressure, e the Naperian base and a' and b constants and dependent upon geometry and voltage."
Date:
August 22, 1945
Creator:
McKinney, C. R.; Eggen, Donald T.; Bishop, A.; Arnold, W. A. & Starr, C.
Object Type:
Report
System:
The UNT Digital Library
Crystal Structure Studies of the System NaF-UF4, NaF-ThF4 and NaF-LaF3
Abstract: In the NaF-UF4 system the following intermediate phases have been found: NaUF5, -Na2UF6, -Na2UF6 and NacUF7. NaLaF4 is the only intermediate phase observed in the system NaF-LaF3. In the course of an incomplete study of the system NaF-ThF4 the phases NaTh2F9, -Na2ThF6, -Na2ThF6 and Na4ThF8 have been observed. Crystal structure data are given for all the phases.
Date:
August 1946
Creator:
Zachariasen, William H. (William Houlder), 1906-1979
Object Type:
Report
System:
The UNT Digital Library
The Dissolution of Thorium Metal and Thorium Dioxide in HNO3 - HF and HNO3- ( NH4 ) 2 SiF6 Mixtures
Abstract. A satisfactory method has been found for dissolving thorium metal and thorium oxide in heat-treated 25-12 stainless steel vessels without excessive corrosion of the vessels. The dissolution medium consists of strong HNO3 containing a small amount of fluoride or fluo-silicate. the fluoride required has no harmful effects on a subsequent solvent-extraction step for a separation of uranium isotopes from the dissolved thorium.
Date:
August 2, 1946
Creator:
Schuler, Frederick W.; Steahly, Frank L. & Stoughton, Raymond W.
Object Type:
Report
System:
The UNT Digital Library
Recovery of Uranium From Fiberglass Air Filters
Abstract: Various procedures for extracting uranium from fiberglass air filters have been tested and compared. Satisfactory results which involve the least amount of handling are obtained by simply washing the material with hot 1:1 hydrochloric acid.
Date:
August 5, 1946
Creator:
Adams, R. H.; Rogers, J. A. & Brown, K. B.
Object Type:
Report
System:
The UNT Digital Library