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The Conversion of UF4 to U3Os
Methods of conversion of UF4 to U3O8 by fusion with ammonium oxalate dihydrate and other salts are described.
Date:
May 28, 1941
Creator:
Tevebaugh, A. D.; Tevebaugh, R. D.; Cline, W. D. & Warf, James C.
Object Type:
Report
System:
The UNT Digital Library
Capture Cross Section of Si for Thermal Neutrons
The following report analyzes different values and measurements that give the same results for the captured cross section of thermal neutrons for Si.
Date:
May 6, 1942
Creator:
Coon, J. H.
Object Type:
Report
System:
The UNT Digital Library
Radiation Chemistry: The Chemical Effects of Radiation on Matter
Lecture notes from a training program. "It is the function of the section on radiation chemistry to determine the effects of all radiations and high energy particles produced under the various operating conditions on all the materials which will be exposed to them."
Date:
May 3, 1943
Creator:
Burton, Milton
Object Type:
Report
System:
The UNT Digital Library
Metallurgical Laboratory, Chemical Research - Radiation Chemistry, Report for the Month Ending May 15, 1943
Technical report that information has bee obtained on the effect of beta and gamma radiation on the electrical resistance of insulating materials The results are summarized. The recovery to original resistance values has been measured. In general, the initial rate is rapid for the first few hours; the rate then decreases sharply. Certain samples show evidence of complete recovery. Effects on mechanical properties of several plastics has also been studied. Data on gas evolution from several organic materials including those suggested by the physiological shield have been extended to include both beta and deuteron bombardments. Samples of "Press-wood" are being evaluated. The effect of current on the H2O2 production in water containing I- has been studied at several I- concentrations. Water contain-dissolved CO2 shows the presence of oxidant (presumably H2O2). H2O2 has been produced by recoil protons from the scattering of fast neutrons in de-oxygenated water. Radioactive solutions do not greatly affect the applicability the glass electrode providing the electrode is thoroughly washed with distilled water before immersion in the standard buffer solution.
Date:
May 15, 1943
Creator:
Franck, J.
Object Type:
Report
System:
The UNT Digital Library
The Biologic Effects of Radiation ; Training Program Lecture Notes
The following report provides data taken from investigations on radiation and the different biologic effects on it.
Date:
May 17, 1943
Creator:
Cantril, Simeon T.
Object Type:
Report
System:
The UNT Digital Library
Time Variation of Percent Distribution of Fission Activity in Bombarded Uranyl Nitrate
"In this report are presented three figures which show how the relative activities (expressed as percentages of total activity) of the individual fission elements (produced by neutron bombardment of uranyl nitrate) vary with cooling time."
Date:
May 19, 1943
Creator:
Brady, E. L. & Coryell, Charles D.
Object Type:
Report
System:
The UNT Digital Library
Columbia Scaling Circuits
Abstract: "The advantages of high scaling ratios in counting random pulses are discussed. The mechanism of the basic circuit used in the Columbia University scaling circuits is described. The difficulties experienced in the performance of the earlier circuits are indicated and modified circuits to eliminate these difficulties are given. Precautions that must be observed in carrying out the constructional details are suggested. The complete circuit and specifications are given in detail for a Scale of 128 for use with linear-amplifier systems" (p. 1).
Date:
May 2, 1944
Creator:
Glassford, H. A. & Dunning, J. R.
Object Type:
Report
System:
The UNT Digital Library
Metallurgical Laboratory, Chemical Research - Heavy Water, Report for the Month Ending May 1, 1944
Technical report with short reports on (1) Heavy water analysis and standardization, and Specific gravity of pure D2O; (2) Homogenous exponential experiment; (3) Recombination of pile gases; (4) Slurry pumping studies; and (5) Electron microscope laboratory.
Date:
May 16, 1944
Creator:
Hogness, T. R. (Thorfin Rusten), 1894-; Hiskey, C. F. & Eidinoff, Maxwell Leigh, 1915-
Object Type:
Report
System:
The UNT Digital Library
Preparation of U233
Technical report. The object of the research is to determine the procedure and equipment for the preparation of U233 on a semi-works scale. The general proposed procedure is that thorium carbonate in aluminum cans will be irradiated with pile neutrons. The Pa233 resulting from neutron absorption the Th232 and the decay of Th233 will be extraction from 99% of the thorium and the natural U in thorium by MnO2 precipitations. The Pa233 will then be allowed to decay to U233 which in turn will be isolated from the remaining Th and partially decayed Pa233 by ether extraction.
Date:
May 16, 1944
Creator:
Apple, R. S.
Object Type:
Report
System:
The UNT Digital Library
Analysis for Oxide in Thorium Metal
Abstract. to estimate the oxygen picked up by thorium in casting a rapid method of running the acid insoluble content was developed. the quickest procedure consists of reacting with mixed acids, fuming with perchloric and filtration to separate the "free" thorium from the "combined". The precipitate is ignited and weighed as thorium dioxide.
Date:
May 12, 1945
Creator:
Ayers, A. S.
Object Type:
Report
System:
The UNT Digital Library
Stabilizer for Temperature Control Equipment
From abstract: "A simple electronic circuit is described, the use of which greatly improves the temperature regulations obtainable with Beta equipment. The circuit utilizes the time derivative of the temperature to counteract oscillation and overshoot. No other changes are required in existing equipment for installation of the stabilizer."
Date:
May 14, 1945
Creator:
Macleish, K. G. & Palmer, R. C.
Object Type:
Report
System:
The UNT Digital Library
Analysis of Heavy Water by Equilibration
Technical report discussing that the deuterium concentration of heavy water can be determined by equilibrating the water with deuterium gas in the presence of a catalyst with subsequent analysis of the equilibrated gas on the mas spectrometer. The apparatus for equilibration analyses maybe be considered in three parts: 1) apparatus for introducing the ingredients into the reaction chambers; 2) the reaction chambers; 3) the mass spectrometer for analysis of the equilibrated gas. The isotopic composition of the deuterium gas to be used as the starting material is primarily governed by what gases are available. In general it is best to use gas within about one percent on either side of the final equilibrium composition. No reaction takes place between deuterium gas and water molecules in the absence of a catalyst. Platinum oxide is used as the catalyst.
Date:
May 15, 1945
Creator:
Fischer, R. B.; Potter, R. A. & Voskuyl, R. J.
Object Type:
Report
System:
The UNT Digital Library
The Extraction of Uranium into Hexone as Uranyl Thiocyanate from Thorium Nitrate Solutions
Technical report with six sections describing the process: (1) The reaction of HN)3 with HSCN; (2) The distribution of nitric acid between hexone and water; (3) The distribution of HSCN between hexone and water; (4) The solubility of thorium sulfate in various extraction solutions; (5) The distribution of protoactinium and fission elements between hexone and aqueous thiocyanate solutions; and (6) Separation of uranium from thorium by extraction into hexone as UO2(SCH)a.
Date:
May 18, 1945
Creator:
Reas, William H.
Object Type:
Report
System:
The UNT Digital Library
Development of Equipment for the Purification of Mercury by Distillation
Abstract: "An investigation of the mercury salvage program has resulted in the development of an improved high compacity type of distillation apparatus. The still, electrically heated and essentially automatic in its operation, will produce at a rate greater than 75 pounds per hour and develop a product 99.99% pure or better. This still will handle the lowest grade crude of amalgam that can pass through the feed lines and will continue to develop a pure prodcut for comparatively long periods of time. The clean-out operation is amazingly simple and convenient and may be done within one-half hour while the apparatus itself is still hot. Two models of this design are scheduled for installation in a mercury recovery room of the Alpha Analytical Department of Building No. 9207."
Date:
May 26, 1945
Creator:
Lee, J. E. & Susano, C. D.
Object Type:
Report
System:
The UNT Digital Library
Progress Report on Corrosion Tests in TClā
This report describes progress in testing the corrosion resistance of alloys of TClā. The steps and conditions of the testing procedures are given as well as conclusions and photos of TClā.
Date:
May 26, 1945
Creator:
Mash, Donald R.
Object Type:
Report
System:
The UNT Digital Library
The Beta-Gamma Hand and Foot Counters
Abstract: This is basically a counting rate meter, with an alarm circuit, operating from four GM tubes as the detecting elements. The Hand Counter comprises four logarithmic counting rate meters working from four GM tubes mounted individually, with associated electronic circuits, in suitable shields with a metal mesh type of window. Both sides of both hands are sampled simultaneously. In the Foot Counter, two GM tubes are separately and mounted in a suitable mesh window shielded with the electronic circuit; the foot counter uses only two counting rate meters, and both feet are sampled simultaneously. Each circuit is built in two parts; two tubes are in the shield and the balance of the circuit is in the electronic unit which is a standard 17" x 13" chassis. Circuit diagrams are included.
Date:
May 1946
Creator:
Bradley, W. H.
Object Type:
Report
System:
The UNT Digital Library
The Coprecipitation of Thorium and Uranium Peroxides
From abstract: "Experiments covering the coprecipitation of Thorium and Uranium peroxides are described on synthetic and actual 1300 cycle machine wash effluents."
Date:
May 10, 1946
Creator:
Oringer, Roy; Woodard, R. W. & Larson, C. E.
Object Type:
Report
System:
The UNT Digital Library
The Deposition of Plutonium and Certain Fission Products in Bone as a Decontamination Problem
The following report discusses the deposition of radioactive elements during a nuclear fission in the skeleton. Studies are concerned with chronic effects of toxic radiation developing within the bone marrow and decontaminating the cells.
Date:
May 15, 1946
Creator:
Copp, D. Harold; Greenberg, David M. & Hamilton, Joseph G.
Object Type:
Report
System:
The UNT Digital Library
The Production of Uāāā by a Modified Calutron
Abstract: Three and nine-tenths milligrams of U234 have been produced using a Calutron. A Beta-size Calutron was modified to produce complete resolution of the U234 beam from the U235 beam. With Beta charge the U234 current was 4 microamperes. The samples were collected upon flat pieces of graphite bent to fit the E curve.
Date:
May 21, 1946
Creator:
McKinney, C. R.
Object Type:
Report
System:
The UNT Digital Library
The Analysis of Impurities in Various Stages of Recycled Carbon Tetrachloride and Correlation with Chlorination Properties
The following report discusses findings resulting from experiments on recycled carbon tetrachloride at various stages of the proposed purification process.
Date:
May 23, 1946
Creator:
Hudson, R. L.; Burkhart, L. E. & Larson, C. E.
Object Type:
Report
System:
The UNT Digital Library
Electrolytic Reduction of Uranyl Ion
From introduction: "Due to the hydrogen overvoltage at the surface of a mercury cathode, uranium solutions is hydrochloric acid may be reduced not only to the tetravalent state, but until considerable trivalent uranium is formed. Other metallic ions act as oxidation-reduction catalysts as well as being reduced themselves. The following paper is a study of the various reactions taking place in solution and at the surface of the cathode."
Date:
May 27, 1946
Creator:
Nichols, Ambrose R., Jr.
Object Type:
Report
System:
The UNT Digital Library
The Preparation of High-Purity Beryllium Oxide
Abstract. A method for the preparation of beryllium oxide of high purity is presented. Beryllium basic acetate (BeO-3Be(C2H3O2)2) is prepared from the metal or a convenient salt, a chloroform solution of this material extracted with redistilled water, the dried basic acetate distilled in a quartz apparatus, and this purified material converted to the oxide by fuming down with sulfuric acid and igniting at 1000 degrees C. Impurities detectable spectrographically were reduced to a very low level.
Date:
May 27, 1946
Creator:
Tomkins, F. S.; Cressman, G. W. & Tolmach, L. J.
Object Type:
Report
System:
The UNT Digital Library
Process Monitor Analysis Victoreen Model 350
Abstract: An analysis of the improved Model Number 350 Process Monitor was made so that it could be determined if this instrument would fulfill the need for gamma radiation detection instruments in the production buildings of Y-12. The results of these tests indicated the possibility of marked improvement in the monitor characteristics with minor redesigns. After these improvements have been made, this instrument will be a satisfactory monitor for this area.
Date:
May 1, 1947
Creator:
Harter, J. A. & Olson, E. L.
Object Type:
Report
System:
The UNT Digital Library
The Toxicity and Metabolism of Plutonium in Laboratory Animals
Introduction. The main objective of the Metallurgical Project was the preparation of large quantities of plutonium 239, an isotope of element 94, by the interaction of neutrons and uranium. At the beginning, only predictions of its chemical and biological properties could be made since it is a new element. It was predicted that it would be toxic to tissue by virtue of its high atomic weight, and in addition, that it would be toxic by virtue of its radioactivity. Thus, the preparation and use of the element on a large scale meant the manipulation of, and possible exposure to, toxic quantities. It was, therefore, of practical importance to obtain data which would elaborate on the predicted toxicity. The objectives of the work reported here were to establish the acute toxicity of plutonium in experimental animals and to study the distribution of the element in the body after the administration of a wide range of doses. In the interest of economy of what was, at that time, a rare substance, and of animals and facilities, these two objectives were frequently pursued in the same experiment. The information obtained from the separate experiments is therefore frequently incomplete in one or another respect. ā¦
Date:
May 8, 1947
Creator:
Finkle, Raymond D.; Snyder, Robert H.; Jacobson, Leon O.; Kisieleski, Walter E.; Lawrence, Blanche. & Simmons, Eric L.
Object Type:
Report
System:
The UNT Digital Library