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The Potential of the Pu(III)-Pu(IV) Couple: The Hydrolysis Constant of Pu(IV)

Description: Report discussing an experiment in which the formal potentials of the Pu(III)-Pu(IV) couple in 1M perchloric acid and in 1M hydrochloric acid are determined. The potentials were measured through potentiometric titrations of Pu(III).
Date: July 18, 1950
Creator: Rabideau, Sherman W.; Lemons, Joe F. & Rollefson, G. K.
Partner: UNT Libraries Government Documents Department

Equilibria and Reaction Rates in the Disproportionation of Pu(IV)

Description: Abstract: "The equilibrium quotients and the specific rate constants for the disproportionation of Pu(IV) have been measured as a function of hydrogen and plutonium ion concentrations in perchloric acid solutions of unit ionic strength at 25.00 +/- 0.02. Instead of obtaining the plutonium ion concentrations spectrophotometrically as has been done by previous workers, measurements of the mean oxidation number of the solutions were combined with electromotive force measurements of the Pu(III)-Pu(IV) 'couple and the total plutonium ion concentrations. From these data it is possible to calculate the concentrations of Pu(III), Pu(IV) and Pu(VI) present in the solutions at any time. The equilibrium quotient for the disproportionation reaction has been found to be directly dependent upon the fourth power of the hydrogen ion concentration, thus supporting the existence of the plutonyl ion, PuO2++, in these solutions. A weighted mean value of 0.0089 was found for the Pu(IV) disproportionation equilibrium quotient in perchloric acid solutions of unit ionic strength at 25. The rate of the forward (disproportionation) reaction has been found to exhibit an inverse third power hydrogen ion concentration dependence and the most probable rate determining step of this reaction is PuOH++++ + Pu(OH)2++ --> Pu+++ + PuO2+ + H2O + H+."
Date: 1952
Creator: Rabideau, Sherman W.
Partner: UNT Libraries Government Documents Department

Recovery of Plutonium From Slag and Crucible

Description: Report evaluating different methods of preparing nitric acid solution and different methods of separating plutonium from this nitric acid solution of slag and crucible. Methods are explained and experimental data is given.
Date: June 15, 1951
Creator: Groot, C.; Hopkins, H. H. & Schulz, W. W.
Partner: UNT Libraries Government Documents Department

The Development of Plutonium Electrodeposition Methods : Interim Report

Description: From introduction: "The following report presents a body of information obtained in the Health Instrument Development Laboratory from September, 1948, to the present, and is intended to be a preliminary review of [the study of electrodeposition of plutonium]. Many improvements in technique and methods and investigations along lines not explored are suggested by the present work. These will be undertaken as time permits, and reported at a later time."
Date: March 1, 1950
Creator: Schwendiman, L. C.
Partner: UNT Libraries Government Documents Department

Analytical procedures for the plutonium Metal Fabrication Process

Description: A report describing a the results of a fluorimetric and volumetric method for the determination of fluoride. This method was developed for the determination of ionizable fluorine in gases in the range of 1-500ppm. This method was chosen because the determination depends on the generation of a color rather than the bleaching effect or on a change of color.
Date: January 15, 1951
Creator: Kendall, L. F.
Partner: UNT Libraries Government Documents Department

Strontium Program: Quarterly Summary Report, January 1, 1960

Description: From Abstract: "This report is one of the a sequence of quarterly reports, each designed to up-date its predecessor beginning with HASL-42, "Environmental Contamination from Weapon Tests." Herein are presented data accrued since HASL-69. Plutonium-239 and cesium-137 levels in human tissue and other biological materials are also presented."
Date: January 1, 1960
Creator: Hardy, Edward P., Jr. & Klein, Stanley
Partner: UNT Libraries Government Documents Department

The Solubility of Plutonium (IV) Monobutyl Phosphate

Description: Report discussing a study regarding the identification and property analysis of plutonium (IV) monobutyl phosphate, which formed as a white precipitate in another study of the effects of monobutyl phosphate on plutonium(IV) in tributyl phosphate extractions.
Date: June 28, 1950
Creator: Moore, Robert Lee
Partner: UNT Libraries Government Documents Department

The Furnace Spectrum of Plutonium

Description: Abstract: "The spectrum of plutonium has been observed over the temperature range of 2000 to 2600 C and a wavelength coverage of 3476 to 6888 A. The spectrum was excited in a modified King furnace."
Date: May 12, 1953
Creator: Conway, John G.
Partner: UNT Libraries Government Documents Department

Efficiency of a Three Inch Higgins Column

Description: The following report describes the usage of a semi-continuous ion exchange contactor--named the Higgins contactor--fit to operate the Purex process, a process that recovers plutonium and uranium from irradiated natural uranium fuel elements. It is intended to use the contactor in the final purification and concentration stage of the process plutonium streams.
Date: December 20, 1956
Creator: Vaughan, Victor C.; Jansen, George & Bagley, Raymond O.
Partner: UNT Libraries Government Documents Department

The Hydrolysis Products of Tributyl Phosphate and Their Effect on the Tributyl Phosphate Process for Uranium Recovery

Description: This report follows an investigation on how hydrolysis products of tributyl phosphate (such as dibutyl and monobutyl phosphoric acids, orthophosphoric acid and butanol) effect the tributyl phosphate process for uranium recovery.
Date: April 15, 1951
Creator: Wagner, R. M.
Partner: UNT Libraries Government Documents Department

Measurement of the Slow Neutron Absorption Cross Section of Some Heavy Isotopes

Description: The following report investigates cross sections for the absorption of slow neutrons of heavy isotopes. The purpose of these measurements was to determine the cross section of an isotope of element 94 for the process of fission by the absorption of a slow neutron, relative to the cross section of U235 for the same process, that is, to measure R.
Date: 1943
Creator: English, Spofford Grady
Partner: UNT Libraries Government Documents Department

Coulometric Titration Plutonium

Description: Abstract:"A method is described for the electroreduction of plutonium to the +3 valence state in a nitric acid-sulfamic acid solution. Exploratory experiments in the search for a coulometric titration of Pu(III) using electrolytically generated ceric ion are also described. The results strongly indicate that a convenient procedure can be devised. Suggestions for future work are presented."
Date: February 17, 1953
Creator: Dreeben, A. B.
Partner: UNT Libraries Government Documents Department

The Determination of Indium in Indium Plutonium Solutions

Description: Abstract: "A gravimetric procedure is described for the analysis of indium-plutonium solutions. This procedure consists of a preliminary separation of the plutonium as the peroxide, followed by the quantitative precipitation of indium diethyl dithio carbamate from a slightly acid solution. The precipitate is dried at 105 C and weighed. Recoveries of 99.4 - 100.5% with an average precision of 2.3/100 were obtained on known Pu-In solutions containing 5 - 50 mg of indium per sample."
Date: December 12, 1950
Creator: Waterbury, Glenn R.
Partner: UNT Libraries Government Documents Department