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Fundamental theory of elastic wave scattering by defects in elastic materials: integral equation methods for application to ultrasonic flaw detection

Description: The use of ultrasonic methods in nondestructive testing depends on the interpretation of the scattering of sound waves by flaws. The theory of elastic waves and their scattering in non-uniform media is developed in detail from first principles, and in generality. Both integral equation and differential methods are discussed, with emphasis on the former. General methods for defining scattering cross sections are presented, and conservation theorems are noted. The Born Approximation to the integr… more
Date: May 1, 1976
Creator: Gubernatis, J.E.; Domany, E.; Krumhansl, J.A. & Huberman, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development of a prototype high temperature amplifier for geothermal well logging. Final report

Description: A high temperature amplifier for use in geothermal well logging was developed. This development was based on the use of ceramic vacuum tubes as the active circuit element, since these tubes have the capability to operate in the high ambient temperature environment. The primary goal of this program was to design, build, and deliver a prototype amplifier capable of continuous operation in a 250/sup 0/C environment. A development program designed to meet this goal covered four phases. These phases… more
Date: May 1, 1976
Creator: Cannon, W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Neutral Currents - The Structure of the Coupling

Description: The authors report here on latest results from an investigation of the form of the neutral current coupling in the inclusive channels {nu}{sub {mu}} + N {yields} {nu}{sub {mu}} + hadrons and {bar {nu}}{sub {mu}} + N {yields} {bar {nu}}{sub {mu}} + hadrons. The experiment was conducted by the Caltech-Fermilab group in October 1974. The data were taken in the Fermilab narrow band beam set to a mean secondary hadron energy of {+-} 170 GeV. The distributions of total energy, observed in the target … more
Date: May 1, 1976
Creator: Stutte, Linda & /Caltech
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Solar-receiver heat-flux capability and structural integrity. Final report

Description: An experimental program was conducted to determine the operating characteristics of full length (65 feet) single and multi-tube once-through steam generator test sections subjected to radiant heat flux levels commensurate with commercial solar tower receiver application. Absorbed heat flux levels ranging from 0.15 to 0.71 Btu/in./sup 2/-sec (0.25 to 1.16 MW/m/sup 2/) were achieved in a horizontal facility utilizing graphite radiant heater arrays. Steam exit temperatures ranged from 625 F (two-p… more
Date: May 1, 1976
Creator: Tobin, R.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effects of variations of selected repository design parameters for salt and granite host rocks

Description: Perhaps the most important design consideration is the heat generated by the spent fuel assemblies or the high-level waste being placed in the repository. The sensitivity of repository design to this heat is reflected by the definition of temperature and thermochemical criteria. To assure environmental and occupational safety, limits may be placed on such parameters as spent fuel or waste temperature, canister temperature, rock temperature, strength-to-stress ratio of the excavated openings, su… more
Date: May 1, 1976
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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U. S. working draft on repository physical descriptions in a granite formation. [LWR waste: spent fuel or reprocessing wastes]

Description: This report presents a physical description of a reference deep-geologic repository located in a granite host rock at a depth of about 1500 meters. Two reference repository designs are described in this report. One is designed to accept wastes from a lightwater reactor (LWR) strategy in which no reprocessing occurs, and the spent fuel itself is considered a waste form. The second is designed to accept wastes from an LWR strategy with reprocessing in which uranium and plutonium are recycled.
Date: May 1, 1976
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Deformation of liquid droplets and gas bubbles in electric fields. Research report No. 1

Description: The behavior of dielectric droplets and gas bubbles in electrostatic levitation, positioning, and control devices for laser-fusion target applications is studied. Because of the exacting tolerance requirements for the sphericity of laser fusion targets, there is concern over the electric field induced elongation effect which may exist in some or all of these schemes. These proposed tolerances suggest upper limits on the axis ratio ..gamma..: ..gamma.. - 1 < 10/sup -3/, which may severely limit … more
Date: May 1, 1976
Creator: Jones, T. B. & McCarthy, M. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Partitioning of actinide elements from high-level waste using laser photochemical methods

Description: The feasibility of photochemically fractionating the actinides in nuclear waste processing has been evaluated on a preliminary basis. The data indicate that there are potentially useful photo-redox reactions. However, there is a serious lack of data on photochemical parameters for the solutions conditions which exist in nuclear waste processing. The problem areas relevant to photochemical processing are identified. The experimental areas which must be investigated in order to further evaluate t… more
Date: May 1, 1976
Creator: Gangwer, T
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Stability of trapped-particle modes in lower-hybrid pump

Description: The stability of dissipative trapped-particle modes in the presence of a self-consistent lower-hybrid pump is analyzed theoretically. The pump can either be a single coherent wave or a spectrum of turbulent waves. Corresponding dispersion relations modified by the pump are derived and conditions for excitation and suppression of the modes are also discussed.
Date: May 1, 1976
Creator: Chen, L.; Kaw, P. K. & Tang, W. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Environmental status of the Lake Michigan region. Volume 3. Chemistry of Lake Michigan

Description: The report is a synoptic review of data collected over the past twenty years on the chemistry of Lake Michigan. Changes in water quality and sediment chemistry, attributable to cultural and natural influences, are considered in relation to interacting processes and factors controlling the distribution and concentration of chemical substances within the Lake. Temperature, light, and mixing processes are among the important natural influences that affect nutrient cycling, dispersal of pollutants,… more
Date: May 1, 1976
Creator: Torrey, M S
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Piezo electric polaron and polaron pinning in n-CdS

Description: The cyclotron resonance of the piezoelectric polaron in n-CdS has been investigated using far infrared spectroscopy at magnetic fields to 90 kOe. Both lamellar grating and Michelson Fourier transform spectrometers were used with a 0.3/sup 0/K Ge bolometer to study the photon energy region from 10 cm/sup -1/ to 60 cm/sup -1/. The theory of Miyake predicts that the frequency of the polaron's cyclotron resonance is shifted from the bare hand electron resonance frequency according to the expression… more
Date: May 1, 1976
Creator: Nagasaka, K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Correlation of radionuclide leachabilities with microstructures of glasses containing Savannah River Plant waste

Description: Leachabilities of cesium and strontium from the glass matrices were correlated with the microstructures of glasses containing waste sludge from two SRP waste tanks. All sludge components, except mercury which volatilized, were completely soluble in the melt, but small amounts of crystalline iron oxide precipitated during cooling. These precipitates were less leachable than the glass matrix. Even though the compositions of the two sludges that were tested were similar, glass containing one of th… more
Date: May 1, 1976
Creator: Kelley, J. A. & Rankin, W. N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Alternatives for Managing Wastes From Reactors and Post-Fission Operations in the LWR Fuel Cycle: Volume 2. Alternatives for Waste Treatment

Description: Volume II of the five-volume report is devoted to the description of alternatives for waste treatment. The discussion is presented under the following section titles: fuel reprocessing modifications; high-level liquid waste solidification; treatment and immobilization of chop-leach fuel bundle residues; treatment of noncombustible solid wastes; treatment of combustible wastes; treatment of non-high-level liquid wastes; recovery of transuranics from non-high-level wastes; immobilization of misce… more
Date: May 1, 1976
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Thorium utilization program progress report for January 1, 1974--June 30, 1975. [Reprocessing; refabrication; recycle fuel irradiations]

Description: Work was carried out on the following: HTGR reprocessing development and pilot plant, refabrication development and pilot plant, recycle fuel irradiations, engineering and economic studies, and conceptual design of a commercial recycle plant. (DLC)
Date: May 1, 1976
Creator: Lotts, A. L. & Kasten, P. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

HEXEREI: a multi-channel heat conduction convection code for use in transient thermal hydraulic analysis of high-temperature, gas-cooled reactors. Interim report

Description: A description is given of the development and verification of a generalized coupled conduction-convection, multichannel heat transfer computer program to analyze specific safety questions involving high temperature gas-cooled reactors (HTGR). The HEXEREI code was designed to provide steady-state and transient heat transfer analysis of the HTGR active core using a basic hexagonal mesh and multichannel coolant flow. In addition, the core auxiliary cooling systems were included in the code to prov… more
Date: May 1, 1976
Creator: Giles, G. E.; DeVault, R. M.; Turner, W. D. & Becker, B. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Operational safety system reliability. Progress report, November 15, 1975--May 14, 1976. [LMFBR]

Description: The report describes the objectives and present status of a study concerning the operational reliability of nuclear power plants. The purpose of the study is to develop utilitarian models for use with the Liquid-Metal-Cooled Fast Breeder Reactor; initial testing of the formalism can be carried out with LWR operational data. Methods are being directed towards (1) day-to-day operation of the nuclear plant protection system and (2) to better understand the protection system sensor characteristics … more
Date: May 1, 1976
Creator: Hockenbury, R. W. & Yeater, M. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Density and shape factor of sodium aerosol. Progress report, January 1, 1976--March 31, 1976. [LMFBR type reactors]

Description: Several approaches for characterizing the physical and aerodynamic properties of irregularly shaped aerosol particles are reviewed. Measurements of density modification factor, dynamic shape factor, and particle density using an aerosol centrifuge and a scanning electron microscope are described. Calibration procedures for this characterization method are described and preliminary results reported.
Date: May 1, 1976
Creator: Hinds, W. & First, M. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Special problems in nuclear instrumentation. Progress report, September 1, 1975--August 31, 1976

Description: Five different mixtures of polypropylene, nylon-11, and carbon black were prepared and several specimens were molded of each. The object of this program is to determine the compatability of these components and their suitability for applications in radiation dosimetry. Significant advances were made in the fabrication of small ionization chambers. A new air-equivalent chamber was designed which incorporates essentially all of these advances. Seven cables which are in use for carrying the curren… more
Date: May 1, 1976
Creator: Spokas, J. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mathematical model of a phantom developed for use in calculations of radiation dose to the body and major internal organs of a Japanese adult

Description: A mathematical model of a phantom simulating the body and major internal organs of a Japanese adult has been developed for use in computer calculations of radiation dose. The total body height of the mathematical phantom is 162 cm, and the total body mass is 55 kg based on densities of 0.3, 1.4, and 1.0 g/cm/sup 3/ for the lung, skeleton, and bulk tissues of the body, respectively.
Date: May 1, 1976
Creator: Kerr, G. D.; Hwang, J. M. & Jones, R. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Characteristics of American coals in relation to their conversion into clean energy fuels. Quarterly technical progress report, January--March 1976. [2 appendices; 19 refs. Dryflo separation tests data]

Description: Responses to the questionnaire, which was distributed to determine the extent to which the nation&#x27;s coal seams have been sampled and characterized, are being received. Early comparisons indicate a mathematical relationship between average random reflectance (Rapid Scan) and the mean-maximum reflectance as obtained by standard reflectance analysis. Results obtained so far show support of a diffusion dominance mechanism in the oxidation region of a combustion pot and a chemical kinetic mecha… more
Date: May 1, 1976
Creator: Spackman, W.; Davis, A.; Walker, P. L.; Lovell, H. L.; Essenhigh, R. H.; Vastola, F. J. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Equation of state for the detonation products of hexanitrostilbene at various charge densities

Description: An extensive description of the detonation behavior for the unique and useful high explosive hexanitrostilbene (HNS) is presented. To accomplish this the necessary experimental results measured by detonation of the pure material at charge densities of 1.00, 1.20, 1.40, 1.60, and 1.65 (g/cm/sup 3/ = Mg/m/sup 3/) were compiled and evaluated. Estimates of the equation of state of the detonation products were made for each charge density. To confirm these estimates two-dimensional hydrodynamic (HEM… more
Date: May 1, 1976
Creator: Lee, E. L.; Walton, J. R. & Kramer, P. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Joining uranium to steel

Description: A method has been devised which will allow the joining of uranium to steel by fusion welding through the use of an intermediate material. Uranium-0.5 titanium was joined to AISI 304L stainless steel by using a vanadium insert. Also, a method is now available for selecting possible filler metals when two entirely dissimilar metals need to be joined. This method allows a quantitative ranking to be made of the possible filler metals and thus the most likely candidate can be selected.
Date: May 1, 1976
Creator: Perkins, M. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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