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Uranium Hydride, a Review to January 1, 1944 (open access)

Uranium Hydride, a Review to January 1, 1944

Abstract. A review of all work on uranium hydride published in the CC, CT, CN and CE reports to January 1, 1944, is presented. Some additional information not yet published has been included, so this report includes all data known from the above sources and at Ames to the above date. This report supersedes all previous report on uranium hydride coming out of the Ames laboratory.
Date: February 10, 1944
Creator: Newton, A. S.; Warf, J. C.; Johnson, O. & Nottorf, R.
Object Type: Report
System: The UNT Digital Library
An Analytical Method for Determining Hydrogen in Tuballoy (open access)

An Analytical Method for Determining Hydrogen in Tuballoy

Technical report describing a gasometrical method for the determination of H2 in extruded U rods.
Date: February 9, 1944
Creator: Russell, H. W. & Nelson, H. R.
Object Type: Report
System: The UNT Digital Library
The Heavy-Water Homogeneous Pile:  a Review of Chemical Researches and Problems (open access)

The Heavy-Water Homogeneous Pile: a Review of Chemical Researches and Problems

Technical Report: A generalized review of the chemical problems and researches related principally to the heavy water homogeneous pile is presented herewith. The report covers researches performed principally by the Columbia Group who initiated the study. This report contains a chronological outline of the development, a discussion of some special topics whose significance is paramount in any slurry pile discussion, and finally an outline of important research problems remaining, roughly graded in order of their importance. No attempt has been made to be either complete or detailed in the discussion. The emphasis has been principally on furnishing a broad guide to those who may t some future date take up this work.
Date: February 28, 1944
Creator: Hiskey, C. F. & Eidinoff, Maxwell Leigh, 1915-
Object Type: Report
System: The UNT Digital Library
Ames Project, Chemical Research - General Chemistry, Report for the Period of April 10 to May 10, 1944 (open access)

Ames Project, Chemical Research - General Chemistry, Report for the Period of April 10 to May 10, 1944

Technical report. Areas covered are properties of uranium halides, properties of uranium nitrides, and hydride formation at high pressure.
Date: June 17, 1944
Creator: Spedding, F. H. (Frank Harold), 1902- & Wilhelm, H. A.
Object Type: Report
System: The UNT Digital Library
Contributions to the Water Problem (open access)

Contributions to the Water Problem

Technical report describing the investigation of the short-lived activities produced in oxygen compounds by irradiation with pile neutrons. The most prominent of these activities in cooling water is a beta and gamma emitting activity of about 8 second half-life. Because of its production by epicadmium neutrons it was believed to be the 8 second N16 produced in the pile by n,p on O16. The identification has been accomplished and it is established that the 8 second activity is N16. Part 2 of the report deals with the determination of the recoil range of the Al28 atoms formed by pile n,p reaction on Al27.
Date: July 3, 1944
Creator: Novey, Theodore B.
Object Type: Report
System: The UNT Digital Library
The Effect of Radiation on the Corrosion of Metals by Water (open access)

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.
Object Type: Report
System: The UNT Digital Library
The Wigner Effect in Graphite, Relationship Between Advantage Factor and Location of Samples in an Operating Pile (open access)

The Wigner Effect in Graphite, Relationship Between Advantage Factor and Location of Samples in an Operating Pile

Technical report. The extent of the Wigner effect in graphite at any point in a pile is sensitive to the local structural situation. It is greater near a slug. These control experiments give information on changes in graphite to be expected in selected places in the pile.
Date: October 20, 1944
Creator: Novick, A.; Neubert, T. J. & Burton, Milton, 1902-
Object Type: Report
System: The UNT Digital Library
Metallurgical Laboratory, Chemical Research - Analytical, Report for the Month Ending July 1, 1944 (open access)

Metallurgical Laboratory, Chemical Research - Analytical, Report for the Month Ending July 1, 1944

Technical report containing short reports on (1) Mass spectrometer studies; (2) Purification of heavy water; and (3) Equilibration studies.
Date: August 11, 1944
Creator: Hogness, T. R. (Thorfin Rusten), 1894-; Ashcraft, E. B.; McKinney, D. S. & Voskuyl, R. J.
Object Type: Report
System: The UNT Digital Library
Preparation of Carrier Free Zr-Cb Tracer, Problem Assignment No. 263-X61C, Progress Report (open access)

Preparation of Carrier Free Zr-Cb Tracer, Problem Assignment No. 263-X61C, Progress Report

Technical report abstract. A rapid procedure for the preparation of very pure carrier-free Zr and Nb tracer involves the chloroform extraction of the cupferrides of Zr and Nb activities from process solutions. Zr and Nb form very stable chloroform soluble cupferrides in acid solutions (CK-993) and are separated from other fission elements almost quantitatively to yield pure mixture of Zr and Nb activity. A minimum of operations is required and the method is easily adaptable to remote control.
Date: August 28, 1944
Creator: Marinsky, Jacob A. (Jacob Akiba), 1918-2005 & Ballou, Nathan Elmer, 1919-
Object Type: Report
System: The UNT Digital Library
Uranium Oxide Slurry Pumping Experiments (open access)

Uranium Oxide Slurry Pumping Experiments

Abstract: Experiments on colloid milling and pumping show that uranium trioxide, when carefully dehydrated, can be dispersed in water to form a relatively stable slurry, suitable for a homogeneous slurry pile. At temperatures considerably below those of anticipated pile operation particle size growth occurs attended by increase in settling rate and decrease in viscosity. Theses properties of the slurries may be strongly affected by impurities present as well as by special operating conditions.
Date: September 15, 1944
Creator: Brandt, R. & Dean, G. R.
Object Type: Report
System: The UNT Digital Library
Electrolytic Production of Uranium from Solutions of its Tribromide in Fused Salts (open access)

Electrolytic Production of Uranium from Solutions of its Tribromide in Fused Salts

Abstract. the electrodeposition of uranium metal, in the form of tree-like deposits, from molten strontium halide baths is described. Under the best conditions studied, approximately 40% recovery is attained. Freedom from side-reactions of the reduced uranium with anode products and/or refractory materials, and high cathode current densities appear to be essential to the success of the process. the refining of uranium under similar conditions appears to occur quite readily, with approximately 50% current efficiency. The preparation of UI3 is also described.
Date: August 15, 1944
Creator: Webster, Richard A.
Object Type: Report
System: The UNT Digital Library
The Effects of Neutron Bombardment on the Electrical Resistance of Aluminum, Beryllium and Tuballoy (Uranium) (open access)

The Effects of Neutron Bombardment on the Electrical Resistance of Aluminum, Beryllium and Tuballoy (Uranium)

Abstract. Wigner effects on aluminum, beryllium, and tuballoy have been studied by the electrical resistance method. Samples were exposed during an interval which would have produced an increase of approximately 22% in resistance of AGOT-K graphite. The resistance of tuballoy increased approximately 1%. It is shown that the increase can be accounted for by the amount of fission product impurity formed during the exposure. Neither aluminum nor beryllium showed any change. In the case of Be, the Wigner effect may be obscured, to some extent, by the approximately .2 - .3 atom % of impurity present in the samples. Based on the increase occurring in ADOT-K graphite, a change of approximately .2 - .5 x10-6 ohm-om might be expected in the case of Be. The accuracy of the method was sufficiently great to detect a change of this magnitude. Other experiments with Be will be undertaken when purer samples are available. Meanwhile, some samples of the present type ae being subjected to further irradiation.
Date: November 2, 1944
Creator: Royal, J.
Object Type: Report
System: The UNT Digital Library
Melting Point -- Composition Diagrams in the U-UBr3 System (open access)

Melting Point -- Composition Diagrams in the U-UBr3 System

Abstract. A portion of the liquid-solid phase equilibrium region of the system U-UBr3 has been investigated by the method of thermal analysis. Uranium tribromide was prepared by introducing bromine vapor into a bulb containing finely divided uranium formed from the hydride. Cooling curves were obtained with tribromide and then with various compositions of tribromide and uranium. the information obtained showed that no solid sub halide exists but that the metal was soluble in the halide.
Date: December 20, 1944
Creator: Thurmond, Carl
Object Type: Report
System: The UNT Digital Library
Progress Report: Development and Construction of Alpha-Counting Equipment (open access)

Progress Report: Development and Construction of Alpha-Counting Equipment

Abstract: An ionization chamber for use in counting alpha particle activity from the air has been devised for counting samples collected with the electrostatic precipitator. The chamber is an adaptation of the breech-locking standard chamber, with a cylindrical high voltage electrode into which the collection foil is placed, and a coaxial rod as a collecting electrode. A geometrical efficiency of close to 50% is obtained.
Date: July 4, 1944
Creator: Borkowski, C. J.; Dandl, R. A.; East, J. K. & Firminhac, R. H.
Object Type: Report
System: The UNT Digital Library
Computed Values of X-Ray Lines and Limits for the Trans-Uranic Elements (open access)

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
Object Type: Report
System: The UNT Digital Library
Biological Action of Gamma and X-Rays (open access)

Biological Action of Gamma and X-Rays

Report of experimentation on mice of exposure to daily doses of gamma radiation at two rates and the resultant damage.
Date: December 22, 1944
Creator: Lorenz, E.; Eschenbrenner, A.; Derringer, M. & Heston, W. E.
Object Type: Report
System: The UNT Digital Library
Columbia Scaling Circuits (open access)

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

Nomographic Charts for Nuclear Reactions

Charts that show neutron energy, laboratory or center of gravity angle, and bombarding energy for nuclear reactions.
Date: 1944
Creator: McKibben, J. L.
Object Type: Technical Drawing
System: The UNT Digital Library

Test Unit Power Supply

Technical drawing of electronic circuits and power supplies for nuclear reactors.
Date: 1944
Creator: Sands, M.
Object Type: Technical Drawing
System: The UNT Digital Library

Three Channel Mixer

Declassified Manhattan Project technical drawing of amplifiers and electronic circuits for nuclear reactors.
Date: 1944
Creator: Titterton, E. W.
Object Type: Technical Drawing
System: The UNT Digital Library

Camera Synchronizer

Declassified Manhattan Project technical drawing of cameras in nuclear reactors.
Date: 1944
Creator: Whitham, Glenn E.
Object Type: Technical Drawing
System: The UNT Digital Library

Model 50 Power Supply

1 technical drawing of an electric power supply to a nuclear reactor.
Date: 1944
Creator: Sands, M.
Object Type: Technical Drawing
System: The UNT Digital Library

Calibrated Sweep Generator

Technical drawing of signal generators for nuclear reactors.
Date: 1944
Creator: U.S. Atomic Energy Commission
Object Type: Technical Drawing
System: The UNT Digital Library

East Area Bldg #906: DuPont Carbon Unit

Technical drawings of nuclear reactor design.
Date: 1944
Creator: E. I. du Pont de Nemours & Company
Object Type: Technical Drawing
System: The UNT Digital Library