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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.
System:
The UNT Digital Library
The Diffusion Length and the Utilization of Thermal Neutrons in a Heterogeneous Pile
Abstract: "An accurate calculation is given for the quantity which corresponds to the diffusion length in the theory of the pile. The procedure is to establish a relationship between the diffusion length and the change in thermal utilization from a pile with infinite sides to one with sides of a finite length. The calculation of this change in the thermal utilization is then carried through. Approximation to the answer and numerically exact calculations are given in the report. The results show that for radif very near the optimum values the exact diffusion length is slightly larger than the one obtained from the usual formula...However, over most of the range of radii the exact diffusion length is smaller than the approximate one."
Date:
October 6, 1943
Creator:
Plass, Gilbert N.
System:
The UNT Digital Library
Report No. EC-2, Dated from March 24, 1943 to November 5, 1943, Contained in the Engineer's Log Book
This technical report consists of day by day experimental data reported in Engineer's Log book, Electro-Chemistry Department, supporting Report No. EC-11 dated November 15, 1944, by W. L. Grube, Research Laboratories Division, General Motors Corporation.
Date:
November 6, 1943
Creator:
Grube, William L.
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.
System:
The UNT Digital Library
Computed Values of X-Ray Lines and Limits for the Trans-Uranic Elements
Report detailing values of x-ray lives and limits for trans-uranic elements. Formulas and methods are detailed throughout the report.
Date:
September 6, 1944
Creator:
Monk, Ardis T. & Allison, Samuel King
System:
The UNT Digital Library
Factors Affecting the Precipitation of Tubanyl Peroxide from Gunk Solutions at Reduced Temperatures
The following report presents data from the investigations on discovering factors affecting the precipitation of tubanyl peroxide from Alpha and Beta gunk solutions at reduced temperatures.
Date:
March 6, 1945
Creator:
Brown, K. B.; Swanson, D. M.; Wagner, E. L. & Miller, A. J.
System:
The UNT Digital Library
The Precipitation of Lanthanum from Solution in the Presence of Radiation
Abstract. In order to anticipate radiation - chemical effects in solutions of active lanthanum, various solutions and suspensions containing lanthanum were irradiated with an electron beam. Separation of lanthanum from barium by the alcoholic HCl method is not rendered less efficient by radiation, although considerable gas evolution occurs. Suspensions of lanthanum as hydroxide and as ferrocyanide are not appreciably solubilized by radiation. Lanthanum oxalate is decomposed by radiation, is partially thrown into solution, and finally dissolves completely when all the excess oxalate ion in the solution has been destroyed.
Date:
April 6, 1945
Creator:
Penneman, R. A. (Robert Allen), 1919-; Ghormley, J. A.; Gordon, S.; Leaf, B. & Allen, A. O. (Augustine O.)
System:
The UNT Digital Library
Theory of Oscillating Absorber in a Chain Reacting Pile
Abstract. the fluctuation in pile intensity caused by an oscillating point absorber is calculation. It is found that the nature of the response depends on the frequency of the impressed oscillation. If the frequency is high compared to the decay rate of the high harmonics, the response consists of a wave which is propagated away from the oscillator. If the frequency is low, the propagated wave character of the response disappears and the intensity of the whole pile tends to oscillate with the same phase. The amplitude of the response decreases with increasing frequency.
Date:
April 6, 1945
Creator:
Cahn, Albert S., Jr.; Monk, A. T. & Weinberg, Alvin Martin, 1915-2006
System:
The UNT Digital Library
Reclamation of Contaminated Diffusion Pump Oil and Removal of Tuballoy Therefrom
Abstract: The possibilities for the removal of tuballoy from diffusion pump oil and reclamation of the oils for reuse are discussed. The report includes specifications of practical equipment, operating instructions, photographs and diagrams of the necessary construction details.
Date:
December 6, 1945
Creator:
Lee, J. E. Jr. & Susano, C. D.
System:
The UNT Digital Library
Separation of Tuballoy From Tantalum by Chlorination Distillation Process
Abstract: Tuballoy can be effectively separated from tantalum filaments by chlorination of the filaments and subsequent distillation and condensation of tantalum chloride. Apparatus for chlorination of filaments and distillation separation in one unit is under consideration. Chemical methods of separation of tuballoy from distillation residues are being tested.
Date:
February 6, 1946
Creator:
Adams, R. H.; Rogers, J. A.; Wagner, E. L. & Miller, A. J.
System:
The UNT Digital Library
Mass Spectrometric Determination of Isotopic Ratio with Varying Ion Beam Intensity
Summary: "An apparatus is described which applies alternate pulses from two ion beams to a galvanometer network. The isotopic ratio is read directly from a potentiometer. The comparison is independent of ion beam intensity. This method is not practical for application to the standard Nier assay instrument because of the low ion currents normally used. It is suggested that this comparison method may have utility in a spectrometer utilizing a high intensity ion source such as capillary ore or condensed spark."
Date:
March 6, 1946
Creator:
Cameron, Alan E. & White, J. R.
System:
The UNT Digital Library
The Chemical Effects of Nuclear Transformations
This technical report is divided into two sections addressing two different chemical effects of nuclear transformations. The first section discusses the beta decay of lanthanum to cerium. The second section discusses the beta decay of selenium to bromine.
Date:
June 6, 1946
Creator:
Coryell, Charles D. (Charles Du Bois), 1912-1971; Gest, H.; Edwards, R. R. & Davies, T. H.
System:
The UNT Digital Library
Recovery From Salvage Residue by Fluorination in Vertical Reactors
Report discussing trial runs of a method of recovery of uranium from salvage residue. The method involves hydrofluorination of the residue to remove large quantities of interfering silicates, followed by a fluorination treatment to remove uranium.
Date:
September 6, 1946
Creator:
Stevenson, K., Jr.; Blasewitz, A. G. & Clewett, G. H.
System:
The UNT Digital Library
Calculation of end points in potentiometric analyses
From introduction: "It is the purpose of this report to give two further methods of determining end point of pontentiometric titration, neither of which require the plotting of a graph."
Date:
October 6, 1947
Creator:
Bennett, Carl A.
System:
The UNT Digital Library
Corrosion Tests on Carboloy in Redox Process Solutions
Introduction: Static, total immersion corrosion tests were carried out at room temperatures with Carboloy grades 44-A, 78, 907, X-3119-A and X-3119-B in Redox process solutions (ANL, June 1, 1949 Flowsheet) 1AX, 1AF, and 1AS.
Date:
April 6, 1949
Creator:
Koenig, W. W.
System:
The UNT Digital Library
Progress Report on Carnotite Studies; Carbonate Processes: September 1949
This is a progress report on the carbonate process, compiled by the chemical development department of the Carbide and Carbon Chemicals Corporation's Y-12 plant, covering the month of September, 1949. In the previous month, the problem of immediate interest to the Monticello operation were listed. Projects that were left incomplete during that time were continued during this month, as well as a brief investigation of the process in which raw ore is leached with sodium carbonate, the sands and slime separated, the sands leached with acid, and the slimes roasted in a pellitized form.
Date:
October 6, 1949
Creator:
Brown, K. B. & Coleman, C. F.
System:
The UNT Digital Library
The Gasometric Determination of Nitrite and Sulfamate
This report covers an investigation made to develop a gasometric determination that can determine 1.2 x 10-(-5) g. of nitrite with a precision (99% limits) of +/- 8%, and discusses how this procedure works.
Date:
March 6, 1950
Creator:
Carson, W. N.
System:
The UNT Digital Library
Radioactive Isotopes of Bismuth
Five isotopes of bismuth occur in nature. Using particle accelerators providing helium ions up to 40 Mev in energy and deuterons up to 20 Mev in energy, it was possible to produce and identify two artificial radioactive isotopes. With the advent of the 184-inch Berkeley syncho-cyclotron and its hundreds of Mev energies, it was possible to form highly neutron-deficient bismuth isotopes extending more than ten mass units below stable Bi(209).
Date:
April 6, 1950
Creator:
Neumann, H. M.
System:
The UNT Digital Library
The System Pentaether-Uranyl Nitrate-Nitric Acid-Water
The system pentaether-uranyl nitrate-nitric acid-water has been studied in the liquid-liquid region, Aqueous solutions containing 0.0M to 8.2M nitric acid and 0.0M to 2.3M uranyl nitrate were equilibrated with pentaether, and the effects of nitric acid concentration, uranyl nitrate concentration and temperature are discussed. Phase diagrams for the system are presented and approximate delta-H values are given.
Date:
April 6, 1950
Creator:
Stover, C. N., Jr.
System:
The UNT Digital Library
Clarification of Redox Dissolver Solution by Centrifugation with Scavenger
From statement of objectives: The purposes of the work described in this report are to provide data useful for designing and operating the dissolver solution clarification equipment to be installed in the Redox production plant.
Date:
June 6, 1950
Creator:
Allen, A. W.
System:
The UNT Digital Library
Comparison of Diluents for Tributyl Phosphate
From introduction: This report summarizes a study of the composution and physical properties of a number of hydrocarbon diluents together with some generalizations regarding relations between [vapor pressure, density and viscosity] properties.
Date:
October 6, 1950
Creator:
Burger, L. L.
System:
The UNT Digital Library
Evaluation of Alternate Solvents for Diethyl Ether in the Extraction of Uranium From Mallinckrodt Type Ore Feeds
Abstract: Technical report describing an evaluation of solvents for use in the extraction of uranium from Mallinckrodt type ore feeds.
Date:
November 6, 1950
Creator:
Runion, T. C.
System:
The UNT Digital Library
Evaluation of Alternate Solvents for Diethyl Ether in the Extraction of Uranium From Mallinckrodt Type Ore Feeds
Technical report evaluating solvents for use in the extraction of uranium from Mallinckrodt type ore feeds. Re-evaluates the Mallinckrodt process in the light of the more recent solvent extraction development that has been carried out at various AEC sites.
Date:
November 6, 1950
Creator:
Runion, T. C.
System:
The UNT Digital Library
X-ray Photometric Determination of Uranium in Metal Oxides
The following report describes the procedures developed for the x-ray photometric determination of uraniuim in metal oxides and sludge and compares results, precision, and length of time of analyses by the General Electric X-Ray Photometer with analyses by the present titration method.
Date:
November 6, 1950
Creator:
Lambert, M. C.
System:
The UNT Digital Library