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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.
Analysis of Bevatron Tau Mesons (Thesis)
The following document analyzes one hundred and seventy-seven bevatron tau mesons for Q value of the tau decay, tau spin and parity, and possible polarization effects.
Aluminum Cladding Long Uranium Plates by Solid-State Bonding
From introduction: This report covers an investigation of solid-state bonding as a technique for aluminum cladding uranium plates of 3 by 0.180-in. cross section in lengths up to 14 ft.
Analyses of Decay Curves of Irradiated Plastics
The following report covers the results of a general program that was conducted at the Oak Ridge National Laboratory to investigate the effects on plastic materials of exposure to radiation in the pile. In the investigation, several plastics were irradiated, and on removal from the pile, their rates of decay were determined by measurement of gamma activity in an ionization chamber.
Alpha Particle Detection and the A. C. Operated Detector "A" (Howler)
Abstract: This discussion concerns the operation, construction, and servicing of an alpha rate meter of medium sensitivity (30,000 alpha particles full scale per minute) and good stability. The instrument is equipped with an oscillator which increases both in frequency and loudness as the alpha activity is increased. The oscillator circuit includes an anticipator which causes a change in frequency depending directly upon the rate of change of alpha activity. Maximum sensitivity is approximately 100 millivolts full scale. Grid current varies from 1 to 5 x 10^-14 amperes. A general discussion of time constants and accuracy is included. Tables of stopping power, ionization and alpha activity are appended.
Los Alamos Power Reactor Experiment and its Associated Hazards
The following report describes the high pressure and temperature homogeneous reactor experiment which has been started at Los Alamos, as well as the hazards and safety aspects for the experiments.
The Ammonium Carbonate Pressure Leaching of Uranium Ores Proposed as Feed to the Pilot Plant at Grand Junction, Colorado : Progress Report
From introduction: This is Progress report BMI-282, the first of a series covering the operation of the pressure-leaching towers for the extraction of uranium by an ammonium carbonate leach...This report discusses the data obtained from tests run to show the effects of such variables as the amount of air and carbon dioxide passed through the pulp, temperature, pressure, and concentration of ammonium carbonate and ammonium bicarbonate in the leach solution on the extraction of uranium.
The Ammonia Reduction and its Application to the Preparation of Green Salt
From introduction: The present report is a summary of the experimental work on a laboratory scale to date involving the ammonia reduction and the one step TF4 processes.
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.
Analysis of P-P Scattering Experiments Below 40 Mev
The following document presents an analysis on a phase-shift of p-p scattering with various measurements in Mev.
Analysis of Lid Tank Neutron Data for Lead and Iron
Abstract: An analysis of the lid tank neutron data for Pb-H2O and Fe-H2O is made. "Effective" fast neutron cross sections for the metals are obtained. This is based on the "one collision theory" of shielding. Values are 3.4 barns for Pb and 2.0 barns for Fe. These compare very well with those obtained by Albert and Welton based on other lid tank data and another method of calculation.
The Analysis of TBP Process Streams for Calcium with the Flame Photometer
Summary: A method was found for determining calcium concentrations in TBP process streams in spite of serious interferences bysodium, ferrous, uranyl, sulfate, phosphate, and sulfamate ions as well as by TBP. The precision attainable varied from sample to sample, depending upon its composition. In general, errors of 20% or greater occurred. The smallest determinable amount of calcium was about 10 mg/1.
Air, Precipitation, and Surface Contamination at Certain Localities in New Mexico from Operation Teapot, Spring 1955
The following report describes the findings of air samplings taken that followed the Wasp detonation of Operation Teapot.
Air-Core Strong Focusing Synchrotron
The following report is based on work performed under the auspices of the U.S. Atomic Energy Commission. The purpose of this report is to describe an air-core strong focusing synchrotron and its functions.
Alloys of Uranium with Zirconium, Chromium, Columbium, Vanadium, and Molybdenum
Abstract: Information on five uranium binary alloy systems has been surveyed. These systems are the alloys of uranium with zirconium, chromium, columbium, vanadium, and molybdenum. The equilibrium diagrams are discussed, and where available, data have been included on diffusion studies, cladding experiments, and mechanical properties.
Accumulation of Radioactivity in Columbia River Fish in the Vicinity of the Hanford Works
Abstract: The data obtained from the radioassay of fish collected in vicinity of the Hanford Works between April, 1948 and June, 1950 are presented. Most of the radioactivity in the fish resulted from the concentration of p32 in the scales, bone, and certain visceral organs. The level of activity density in the fish was influenced by size, feeding habits and metabolic rate in addition to the activity density of the water. Changes in operation of nuclear reactors have resulted in progressive increases in activity densities of fish from one year to the next. The levels of radioactivity are not sufficiently high to be hazardous to either the fish or persons eating them.
Action Taken on the Spot Contamination in the Separations Plant Areas
The following document analyzes radioactive spot contamination in and around the T and B Plant Areas.
Activation Cross Sections by Boron Absorption
The following report studies the neutron activation cross-sections with the insertion of boron absorbers in the energy region 10 to 20,000 ev and the elements within the range.
Advanced Seminar in Reactor Physics
The following report provides equations that result from a seminar in reactor physics.
Revised draft of glossary in terms of reactor theory
Report describing multiple terms that are relevant to reactor theory. The terms are broken up into seven categories that are listed on the second page of the report.
Solution of the initial value problem for the linearized multi-velocity transport equation with a slab geometry
From preface: "This thesis treats an initial value problem which arises in many branches of physical science, namely the one stemming from the velocity-dependent integro-differential transport equation."
A study of the nuclear gaseous reactor rocket
From abstract: "A detailed study is presented of some fundamental problems connected with the realization of a nuclear gaseous reactor rocket engine."
Final technical report for contract year November 9, 1947 to November 9, 1948
Report describing processes to prepare metallic calcium of a very high purity. Report details promising methods for electrolyte purification. Methods of chemical analysis for nitrogen are also improved upon and spectrochemical methods and standards established for twelve other specified elements.
The properties of zirconium and its possibilities for thermal reactors
Report describing a study of zirconium. The report includes history of the metal, information relative to its properties, production, and its fabrications, halfnium separation processes, and corrosion studies.
Direct calorimetric study of fission product decay in active slugs
Report describing the radioactive energy output of U slugs from the Clinton pile. Outputs were measured in a calorimeter. Results have been calculated to watts per gram and compared with previous reports.
An evaluation of data on zirconium-uranium alloys
Report describing the literature relative to zirconium-uranium alloys. The available data related to zirconium-uranium alloys is analyzed in an attempt to understand the behavior and nature of the alloy. Other aspects of zirconium-uranium alloys are discussed in the report.
Applied potential corrosion of aluminum : final report
Report describing data resulting from dynamic tests to determine applied potential corrosion of aluminum.
Approximate calculation of the neutron flux from a plane source in an infinite medium where the nuclear cross sections vary with the energy and with the distance from the source, for energies above 5 Mev
Report detailing the approximate calculation of the neutron flux from a plane source in an infinite medium.
Approximate methods for pile design calculations
From introduction: "At a certain stage in the design of a pile there come a time when it is urgent to obtain day to day answers on the effects of various changes in the design parameters... It is hoped that the procedures described in the present memo will serve as a bridge between the crudest diffusion theory calculations and the more elaborate multi-group methods."
The Application of Pulsed Neutron Sources to Criticality Measurements
Abstract: Experimentally measured promp-neutron decay constants for sub-critical systems are of considerable value as normalization data for calculations of prompt-neutron time constants. A method of measuring these decay constants with a pulsed neutron source, neutron detector and multi-channel time-delay analyzer has been developed and used on a number of fast-spectrum subcritical systems. An analysis of this method based on the one-energy group, one-delayed-neutron group reactor kinetic equations is presented and discussed. The curve of neutron flux versus time predicted by the kinetic equations is compared with the observed curve obtained with a 13.1-cm. diam. enriched-uranium sphere to indicate the application and limitations of the analysis.
The Application of Tracer Techniques to the Determination of Uranium Extraction Coefficients
Abstract: This report deals with the development of a method using tracer technique for determining uranium extraction coefficients on solutions of low uranium concentration. It was found that extraction coefficients could be determined on systems containing as low as one part per million uranium using 1900 level uranium as the tracer. Results of several extraction series are presented in which aluminum nitrate is used as the salting agent and dibutyl carbitol the organic extractant.
ARC Research : Some Considerations on the Application of the A-48 to the Sherwood Program
The following document describes suggestions on the application of the A-48 ion accelerator beam currents to the Sherwood Program.
Quarterly Report August 1947 to November 1947, Biology Division
The following document is a compilation of quarterly reports from August 1946 to November of 1947 from the Biology Division of the University of Chicago.
Table of the Racah and Z coefficients
Report describing Racah and Z coefficients. Formulas and results are detailed in the report.
The technology of thorium
A report describing the technological uses of thorium. The report details interest in thorium as a potential source of the fissionable isotope U233 as well as possessing other applications. Most of the information in this report was obtained from project literature and from unpublished data available to the authors.
Temperature distribution in an inhomogeneous cell
Report describing "the effects of variable graphite conductivity and of the gas layers in the lattice" under the assumptions that "graphice conductivity varies as a power of the distance from the center of each cell" and "uniform distribution of heat sources" - from abstract.
The temperature dependence of a cross-section exhibiting a resonance
Report detailing calculations for "the explicit energy and temperature dependence of a macroscopic cross-section exhibiting a resonance"
An Approximate Crystal Structure for the Beta Phase of Uranium
The following document describes x-ray diffraction measurements for an approximate crystal structure for the beta phase of metallic uranium.
Insufflation studies in rabbits with dusts of uranium compounds
From abstract: "In a large series of rabbits, both the responses exhibited by the animal and the fate of the dose have been observed following the intratracheal insufflation of a soluble (uranyl nitrate) and an insoluble (U30g) compound, large (100mg) and small (5 and 10mg) doses have been given. For comparison, in a third series of tests a large fose of uranyl nitrate was injected intramuscularly."
A method for the determination of traces of metals
Report describing quantitative recovery traces of electrolyzable metals in a mercury cathode. The majority of the report is concerned with separation of metals from concentrated uranyl sulfate solutions.
Neutron-deficient isotopes in the noble metal region ; Conversion electron spectra of some heavy elements (Thesis)
From abstract: "A radiochemical study of some neutron-deficient nuclides in the noble metal region has been undertaken, and several new chains identified."
Temperature distributions in a reactor fuel plate
Report detailing local heat-transfer coefficients as they relate to temperature distribution in reactor fuel plates.
Uranyl nitrate : four one-year inhalation toxicity studies of animals at 0.04, 0.25, "0.4", and 2.0 Mg U/M³
Report describing the results of a study conducted to investigate the chronic inhalation toxicity of uranyl nitrate. The results of four long-term animal exposure studies are described.
Nonadiabatic effects in single-particle orbits
From introduction: "The containment of a charged particle in a mirror field has been studied analytically and numerically. Formulas are presented which give the change in the magnetic moment as it passes from one end of the machine to the other."
The nuclear spins, hyperfine structure separations, and magnetic moments of Cs¹²⁷, Cs¹²⁹, Cs¹³⁰, and Cs¹³²
From abstract: "The nuclear spins, hyperfine structure separations, and magnetic moments of four cesium isotopes have been measured, using an atomic beam magnetic resonance apparatus designed to utilize the low background flop-in method."
Aqueous Corrosion of Uranium Fuel-Element Cores Containing 0 to 20 w/o Zirconium
Abstract: A description is given of the design and operation of a windowed autoclave system employed in the study of corrosion by pressurized hot water. The device has been used to obtain time-lapse motion pictures of the swelling and rupture of deliberately defected zirconium-clad uranium specimens. A method is described by which corrosion rates were calculated from pressure and temperature measurements. A typical set of pictures taken during a test is presented, and corrosion rates are reported for uranium-0, 5, 10, 15, and 20 w/o zirconium alloys subjected subjected to 600 F water.
Analysis of uranium hexafluoride-hydrogen fluoride solutions by freezing point determination : errors caused by liquid -vapor equilibrium
A report detailing the analysis of uranium hexafluoride-hydrogen fluoride solutions by their freezing point determination. This analysis was conducted by measuring vapor pressures at the freezing temperatures of different compositions of uranium hexafluoride-hydrogren fluoride solutions.
Analytical methods and results
Report detailing the analytical methods and results of a study designed to measure the total alpha particle activity of samples. The method being used was previously in use at Columbia University. The report recognizes potential for grave errors, but makes no effort to minimize the effect of the roughness of the sample.
Analytical procedure for determination of tuballoy in solid salvage residues
From abstract: Test results indicate that the hydrofluorination method for the analysis of tuballoy in solid salvage residues yields sufficient results with a high degree of accuracy; while a modification of the procedure gives good results in approximately half the time.
Analytical procedures for the plutonium Metal Fabrication Process
Report describing methods of determining trace impurities in plutonium in connection with the Metal Fabrication Process. The methods included are the cupferron extraction-copper spark method and the direct copper spark method.