900 Matching Results

Search Results

Advanced search parameters have been applied.

Homogeneous Reactor Preliminary Process Design Report

Description: "The following report is meant to serve a two fold purpose. First, it is the quarterly report of the homogeneous reactor project for the Technical Division of Oak Ridge National Laboratory. Secondly, it is a description and general feasibility discussion of a 200-1000 K.W. pilot model, homogeneous reactor."
Date: December 28, 1949
Creator: Graham, C. B.; Secoy, C. H.; Spiewak, Irving; Taylor, E. H.; Weinberg, Alvin Martin, 1915-2006; Winters, C. E. et al.
Partner: UNT Libraries Government Documents Department

Solvent Extraction

Description: Report discussing methods and theories of solvent extraction. Factors that influence solvent extraction, such as the distribution coefficient, relative solubility, and physical properties of the solvent, are discussed as well.
Date: July 18, 1947
Creator: Smellie, Robert H., Jr. & Krause, D. P.
Partner: UNT Libraries Government Documents Department

Uranium Tetrachloride Two One-Year Inhalation Toxicity Studies of Animals at 0.2 and 0.05 mg U/m3

Description: The following report analyzes studies of chronic inhalation toxicity from uranium tetrachloride dust in animals who were exposed daily for a year for the purpose of determining "borderline" or safe levels of exposure for the duration of one year.
Date: 1948
Creator: Ashenburg, Norman J.; Rothermel, J. F.; Baxter, Robert; Eriksen, Nils; Cobler, John G.; Harrison, William N. et al.
Partner: UNT Libraries Government Documents Department

Materials Handbook : Part V - Properties of Thorium

Description: "These notes are intended to serve as a summary of the current knowledge of properties of materials. In the future some need may exist for related information on methods od testing, design and fabrication. This issue presents information on thorium with subdivisions..."
Date: May 6, 1953
Creator: Wendell, George E.; Majors, Harry, Jr.; Wallace, R. H. & Webster, R. T.
Partner: UNT Libraries Government Documents Department

Some Compounds of Plutonium With Metalloid Elements

Description: From abstract: "Experimental methods of the type employed for alloy preparation in metallurgical research have been used in attempts to prepare compounds of plutonium with four different metalloid elements: phosphorous, arsenic, selenium, and tellurium. By means of their X-ray diffraction patterns the existences of six previously unknown compounds have been established, but the composition and crystal structures of only three of the compounds have been determined."
Date: 1955
Creator: Gorum, Alvin Eugene
Partner: UNT Libraries Government Documents Department

A Study of the Delayed Neutron Emitter, Br87

Description: Report discussing a study to determine experimentally whether a low neutron binding energy must be assigned to Kr⁸⁷ to explain the neutron emission or whether the beta-decay energy is especially high, as well as to determine the fission yield of Br⁸⁷.
Date: August 1, 1950
Creator: Stehney, Andrew Frank
Partner: UNT Libraries Government Documents Department

Survey of Los Alamos and Pueblo Canyon for Radioactive Contamination and Radio Assay Tests Run on Sewer-Water Samples and Water and Soil Samples Taken From Los Alamos and Pueblo Canyons

Description: "Report of the Survey of Los Alamos and Pueblo Canyon for radioactive contamination and radioassay tests run on sewer water samples and water and soil samples taken from Los Alamos and Pueblo Canyons." The objective of this report was to determine the extent and sources of radioactive contamination in the areas studied.
Date: February 20, 1947
Creator: Kingsley, William H.; Fox, Alvin; Tribby, J. F. & Doner, Elmer
Partner: UNT Libraries Government Documents Department

The Pharmacology and Toxicology of Uranium Compounds: Volume 2. Chronic Inhalation and Other Studies. Chapter 11: Special Materials

Description: Report discussing "inhalation toxicity studies of boron halides and certain fluorinated hydrocarbons," a "short-term feeding study with cobalt fluoride in rats," and "determination of boron halides in air." This document contains parts 1-3 of Chapter 11 of Volume 2.
Date: 1949
Creator: Stokinger, Herbert E.
Partner: UNT Libraries Government Documents Department

The Deposition of Plutonium and Certain Fission Products in Bone as a Decontamination Problem

Description: 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.
Partner: UNT Libraries Government Documents Department

The Effect of Geometry and Voltage Variations on the Operations of the Phillips Ion Gage

Description: 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.
Partner: UNT Libraries Government Documents Department

The Isolation and Properties of Curium

Description: From introduction: "The discovery of element number 96, curium, was realized by the preparation and identification of the isotope Cm-242 by G. T. Seaborg, R. A. James and A. Ghiorso by cyclotron bombardment of Pu-239 with helium ions."
Date: July 28, 1948
Creator: Werner, Louis Bernard
Partner: UNT Libraries Government Documents Department

Tentative Specification for Waste Heat Steam Boiler

Description: Report discussing specifications for the design of a waste heat steam boiler "for the purpose of generating steam to operate a condensing steam turbine electric generator from the clean hot radioactive air that has cooled the atomic energy reactor of [a] laboratory under a pressure less than atmospheric."
Date: August 1, 1948
Creator: Williams, C.
Partner: UNT Libraries Government Documents Department

Summation Report: Recovery of Radium From K-65 Residue (23-E): Job 23

Description: Abstract: "Methods for recovering radium from K-65 residue have been investigated. A process using Versene was developed and demonstrated on a laboratory scale. In this process K-65 residue is leached with Versene solution and radium is adsorbed from the leach liquors and purified by the use of cation exchange resin."
Date: February 12, 1952
Partner: UNT Libraries Government Documents Department

Tantalum-Rich Alloys of Tuballoy

Description: Report discussing "methods for the manufacture of refractory crucibles for use in high temperature work in general." Additionally, "preliminary experiments with the induction furnace to test the action of tantalum on tantalum carbide at 2900°C are described."
Date: January 15, 1946
Creator: Sausville, J. W. & Larson, C. E.
Partner: UNT Libraries Government Documents Department

Temperature distribution in spherical pellets

Description: From abstract: "A study is presented of the surface temperature distribution of spherical pellets in a fixed-bed, pellet-type reactor. The temperature near a point of contact is determined experimentally by means of an electrolytic tank analogue. An analytical approach involving the use of the IBM (CPC) calculator is described. Suggestions for further study are included."
Date: 1953
Creator: Anderson, G. M.
Partner: UNT Libraries Government Documents Department

Tentative Procedures for Analysis of HCP Process Materials

Description: Abstract: The procedures recommended for analysis in Department 190 Laboratories, in the Limits Control Laboratory, and in the Analytical Development Laboratories, of all process materials from the HCP cycle are presented in a stepwise manner. A description of the characteristics of each sample type along with a brief description of factors involved in the Analytical Quality Control program is included.
Date: May 28, 1947
Creator: Belknap, Herbert J.; Nessle, G. J. & Grimes, W. R.
Partner: UNT Libraries Government Documents Department

Multigroup Methods for Neutron Diffusion Problems

Description: Abstract: "The age-diffusion is adequate to describe the neutron behavior of a very large class of nonthermal reactors (all except those whose dimensions are comparable to the neutron mean free path). Thus, a convenient means of obtaining an accurate solution to this equation is very useful for general reactor calculations. Methods for reducing the age-diffusion equation to a finite set of coupled ordinary differential equations, called multigroup equations, are described. The relative merits of several alternate schemes are discussed. The multigroup equations may be solved by iterative procedures based on an assumed spatial distribution of the fission source neutrons. In practice the initially assumed source shape is accurate enough so that additional iterations are unnecessary. Analytical and numerical methods for solving the multigroup equations with the assumed source are discussed. The adjoint equations are also reduced to multigroup form, and examples of the adjoint function in obtaining improved reactivity values are given."
Date: August 20, 1953
Creator: Hurwitz, H., Jr. & Ehrlich, R.
Partner: UNT Libraries Government Documents Department