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State of Matter at High Pressure

Description: Abstract. The region where exact thermodynamic description of the state of matter at high pressure and high temperature is possible is located. In the remaining region various approximate theories and empirical relations are discussed. These considerations are applied to hydrogen to locate the density and pressure at which the diatomic bond collapses. Also the approximate conditions are determined at which no bound electron states exist.
Date: March 31, 1960
Creator: Alder, Berni J.
Partner: UNT Libraries Government Documents Department
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Phase Diagrams of Zirconium-Beryllium and Related Systems

Description: Introduction. The phase diagram data reported in this paper were obtained during an investigation of the beryllium-metal compounds of the titanium group transition elements. Several compounds in these systems had been previously reported but their compositions and structures were not all known. In the course of this study many details of the phase diagrams of the system were observed. Tentative diagrams consistent with this data will be presented.
Date: May 31, 1960
Creator: Bedford, Ray Gilbert, 1928-
Partner: UNT Libraries Government Documents Department
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METALLURGY DIVISION QUARTERLY PROGRESS REPORT FOR PERIOD ENDING OCTOBER 31, 1952

Description: Physieal Metallurgy. In the study of Th alloys, it has been found that the addition of Nb and V to Th produces a slight strengthening effect with the first small additions, but that large additions result in a lowering of strength with corresponding increases in ductility. The melting point of iodide Th was measured as being 1755 deg C. Studies of a series of Th--C alloys, with C content up to 0.13%, indicate that C does not affect the temperatures for the start and completion of recrystallization. ANP Program. Welding specifications were prepared for the joining of Inconel pipe dan fitting. for use with highly corrosive media. The production of spherical particles of alloys of U with Ni, V, Nb, and Mo is being studied. The effect of small differences in test temperature in the stress-rupture life and creep rate of Inconel was studied. The effect of different cleaning procedures on the corrosive action of the fluorides on Inconel is being studied. Additional static and dynamic tests were run in an attempt to find inhibitors for the mass transfer and corrosion exhibited in the metal-hydroxide systems. The study of the compounds formed by the interaction of Ni in the hydroxides has shown the appearance of two new compounds: NaNiO/sub 2/ and LiNiO/sub 2/. Ceramics Research. A ceramic coating was successfully applied to Ni, and a Ni radiator assembly is being coated for the ANP Project. A technique for the synthesis of hafnium carbide was developed. Fabrication Research. Production of enriched U fuel and control red elements for operation of the MTR is described. (W.L.H.)
Date: October 31, 1960
Creator: Bridges, W.H. ed.
Partner: UNT Libraries Government Documents Department
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Weapons Effects for Protective Design

Description: A lecture intended to provide a general background in weapons effects is presented. Specific areas of nuclear explosion phenomena pertinent to the design of hardened systems discussed include nuclear radiation and shielding, fireball growth and effects, thermal radiation, air blast, cratering and throwout, ground shock effects, fallout, and afterwinds. (J.R.D.)
Date: March 31, 1960
Creator: Brode, H. L.
Partner: UNT Libraries Government Documents Department
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An Improved Nuclear Density Gauge Progress Report: October 1959

Description: Progress is reported on development of a scintillation detector which alternately views the radiation transmitted through a sample and through a calibrated wedge. From this information density and thickness data can be obtained. Long term stability measurements are being made on the commutating system and the causes of fluctuations are being investigated. Information concerning procurement and fund expenditure are given. (J.R.D.)
Date: October 31, 1960
Creator: Burgwald, G. M.
Partner: UNT Libraries Government Documents Department
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An Improved Nuclear Density Gauge. Quarterly Report No. 2 Covering Period September 1 to December 1, 1959

Description: Techniques for improving stability of scintillation counter chopper systems and their development for use in industrial control applications are being investigated. Tests are being performed to determine the causes of fluctuations. An integration and frequency converter is being developed in which the anode current of the photomultiplier tube is alternately switched between two integrating condensers by action of a commutator switch. The voltages developed across the two condensers are proportional to the respective intensities of the two radiation beams seen by the scintillation counter. Slective sampling by the use of Loss filters is scheduled for future investigations and a literature search on counter stabilization is also planned. (J.R.D.)
Date: October 31, 1960
Creator: Burgwald, G. M.
Partner: UNT Libraries Government Documents Department
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MAGNETIC RECORDER FOR NUCLEAR PULSE APPLICATION. Covering Period: August 6, 1959 to October 5, 1959

Description: Direct recording of nuclear pulse height data on magnetic tape is being investigated. The characteristics of various brands of commercial tape are being investigated and a waveform analysis is being performed in an attempt to determine the most favorable frequency range for available tapes. Use of the magnetic modulator head is being investigated to minimize variations due to short term tape speed variations. (W.L.H.)
Date: October 31, 1960
Creator: Burgwald, G. M. & Stone, C. A.
Partner: UNT Libraries Government Documents Department
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AN IMPROVED NUCLEAR DENSITY GAUGE. Period covered: September 2 to October 1, 1959

Description: Progress in development of a nuclear density gage for use in thickness and density measurements is reported. A Ross filter system for energy discrimination in the alpha ray region was constructed. Soller slits for collimating the radiation entering and leaving the filters so that a constant absorber thickness is seen by the radiation beam is under construction. Comments by visiting Russian scientists on the density gage and a discussion of their work in this area are included. (J.R.D.)
Date: October 31, 1960
Creator: Burgwald, G.M.
Partner: UNT Libraries Government Documents Department
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Sub-Cooled Burnout Relative to Hanford Reactors

Description: In the Hanford production reactors, failure of fuel element cladding is known as subcooled burnout since the bulk coolant temperature is below the saturation temperature at time of failure or burnout of the fuel cladding. The heat generation rate at which subcooled burnout occurs, establishes a limit to allowable reactor power level. This document compares present and potential power level limits at the Hanford production reactors with power level limits established by subcooled burnout.
Date: May 31, 1960
Creator: Carlson, P. A. & Trumble, R. E.
Partner: UNT Libraries Government Documents Department
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THERMAL STRESS TESTING OF SM-2 FUEL ELEMENTS. Interim Technical Report for January 1, 1959 to January 1, 1960

Description: Thermal stress testing was performed on two fuel plates, one cut from a brazed SM-1 dummy fuel element and the other from a TIG Welded SM-2 reference element. The test specimens were subjected to transverse temperature differences of up to 200 deg F, and distortion and strain at various locations were measured. The effect of the thermal stress was to increase the amplitude of original distortions. Adddtional distortions due to thermal stress were proportional to temperature differential and to ripple length. Tensile stresses in the side plate sections were measured as approximately 10,000 psi at maximum reactor temperature difference. Individual weld loadings in shear were measured as 38 lb per weld. Results of the tests were considered inconclusive because of unrepresentative initial plate distortion. (M.C.G.)
Date: October 31, 1960
Creator: Christenson, J.A.
Partner: UNT Libraries Government Documents Department
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Progress Relating to Civilian Applications During January, February, March 1957

Description: These three reports were issued separately, but are cataloged as a unit. Progress is reported in the development of U and Zr alloys for Hanford Reactors, extrusion of Al-clad fuel plates, properties of UO/sub 2/, corrosion of stainless steels, salt baths for U heat treatment, galling in Mg-UF/sub 4/ compacting, development of U alloys for fuels, corrosion of U, development and testing of U- Zr alloys, corrosion of Zr and Zr alloys, constitution of ternary U alloys, corrosion problems in Zircex Process and Darex Prccess, and evaluation of a reflector-controlled heterogeneous boiling reactor. (For preceding period see BMI-1152.) (T.R.H.)
Date: October 31, 1960
Creator: Dayton, R. W. & Tipton Jr., C. R.
Partner: UNT Libraries Government Documents Department
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The Energy Gap in Nuclear Matter

Description: The magnitude of the energy gap in nuclear matter associated with a highly correlated ground state of the type believed to be important in the theory of superconductivity has been evaluated theoretically. The integral equation of Cooper, Mills, and Sessler is linearized and transformed into a form suitable for numerical solution. The energy gap, calculated by using an appropriate single-particle potential and the Gammel-Thaler two-body potential, is found to be a very strong function of the density of nuclear matter, and of the effective mass at the Fermi surface. It is concluded that the magnitude of the energy gap for nuclear matter should not be compared directly with experimental values for finite nuclei, although the results suggest that if the theory is extended to apply to finite nuclei it probably would be in agreement with experiment.
Date: January 31, 1960
Creator: Emery, V. J. & Sessler, A. M.
Partner: UNT Libraries Government Documents Department

[Crossing Tower]

Description: Photograph of the crossing tower on St. Albans Abbey in St. Albans, England. The cross section of the church is visible in the foreground. The tower rises out of three intersecting brick walls. Tree branches intersect the top foreground.
Date: August 31, 1960
Creator: Gough, Ray
Partner: UNT College of Visual Arts + Design

[Flint Stone]

Description: Photograph of a cottage in St. Albans, England. A detail of the cottage exterior is visible in the foreground. The cottage is constructed with flint stones which are visible in the center of the image. A pink flower grows out of the stones. Vines are visible in the bottom right corner climbing up a window.
Date: August 31, 1960
Creator: Gough, Ray
Partner: UNT College of Visual Arts + Design

[Flint stone cottage]

Description: Photograph of a house constructed of flint stones in St. Albans, England. A low fence is visible in the foreground in front of the house. Flowers and plants are visible between the front of the house and the fence.
Date: August 31, 1960
Creator: Gough, Ray
Partner: UNT College of Visual Arts + Design
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