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The Grüneisen Parameter for an Einstein Solid and Under Finite Strain

Description: The Grüneisen constant, as evaluated from the equation of state, is obtained for an Einstein solid. the presence of a state of finite hydrostatic pressure is taken into account explicitly by means of Murnaghan's theory of finite strain, to obtain the Grüneisen parameter's on the Debye and Einstein models. Results are identical in the two cases with the corresponding values obtained without use of the formal theory of finite strain.
Date: September 26, 1955
Creator: Gilvarry, J. J. (John James), 1917-
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Liquid Metal Level Instrument

Description: Theory of operation and test results are given for a resistance type of liquid metal level instrument. The voltage across a steel rod in the tank is amplified by a magnetic amplifier and indicated by a milliammeter. Temperature compensation is provided for tank temperatures up to 1000 F.
Date: March 18, 1952
Creator: Robinson, H.; Dows, L. H. & Droms, C. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Semi-Annual Progress Report, September 30, 1955

Description: Progress is reported in studies on (1) injection tables, (2) radon escape from bone containing radium, (3) on the question of th228 translocation in Ra228 dogs, (4) further studies on the metabolism of Th228 and its daughters, (5) veterinary group report, (6) hematology observations, (7) biochemistry, (8) pathology and detailed radioautography report, (9) radioautographic studies of Pu and RdTh teeth, (10) effect of parathormone on the deposition of Pu in rats, (11) speculation on the toxicity … more
Date: September 30, 1955
Creator: University of Utah. Radiobiology Laboratory
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Rates of Convergence in Numerical Solution of the Diffusion Equation

Description: A basic technique in the design of a nuclear power reactor is to prescribe the dimensions and composition of a simplified model and to calculate the corresponding neutron flux and power distributions. Comparison of calculations for different models and of particular calculations to experimental results guides the physicist to a reasonable prescription. Until recently, the usual model had spherical or cylindrical symmetry. We have found it feasible to extend the methods to include a class of rea… more
Date: 1954
Creator: Stark, R. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Precise Closed-Form Solutions of Some Mixed Boundary Value Problems of Plane Elasticity

Description: Precise solutions are given for the problem of the semi-infinite strip extending from x=0 to x=infinity, stress-free along the edges y= +-1, when the edge x=0 is subject (a) to a quadratic sheer displacement and zero normal stress, (b) to a cubic normal displacement and zero sheer stress. These are the two simplest (non-trivial) end problems of the semi-infinite strip, antisymmetric in y, that may be formulated. The corresponding symmetric problems (a) linear seer displacement and zero normal s… more
Date: 1954
Creator: Horvay, Gabriel, 1908- & Born, J. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Mass Spectrum of Methane and the Energy Levels of the Fragment Ions and Radicals

Description: A MO calculation of the electronic states of CH4, CH3, CH2, CH, and their respective ions provided the basis for the application of correlation rules to an analysis of the existing appearance potential data for methane. An interpretation of the methane mass spectrum has been proposed which is based on the high value of the heat of sublimation of carbon. It is shown that the excited electronic states of the molecule- and radical-ions are prominent in the decomposition reactions.
Date: July 1955
Creator: Krauss, Morris; Wahrhaftig, Austin L. & Eyring, Henry, 1901-1981
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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High-Energy Electron Scattering and the Charge Distribution of Selected Nuclei

Description: Experimental results are presented of electron scattering by Ca, V, Co, In, Sb, Hf, Ta, W, Au, Bi, Th, and U, at 183 Mev and (for some of the elements) at 153 Mev. For those nuclei for which asphericity and inelastic scattering are absent or unimportant, i.e., Ca, V, Co, In, Sb, Au, and Bi, a partial wave analysis of the Dirac equation has been performed in which the nuclei are represented by static, spherically symmetric charge distributions. Smoothed uniform charge distributions have been ass… more
Date: October 1955
Creator: Hahn, Beat & Ravenhall, D. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Chlorine Trifluoride-Hydrogen Fluoride System. Some Vapor Pressure and Conductance Measurements

Description: The possible existence of a stable complex between chlorine trifluoride and hydrogen fluoride made further study of this system desirable. We have therefore investigated the vapor pressures and specific conductances of solutions of hydrogen fluoride in chlorine trifluoride.
Date: 1957
Creator: Rogers, Max T.; Speirs, John L. & Panish, Morton B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Recrystallized Texture of Alpha Uranium

Description: Uranium was plastically deformed 90% at room temperature by unidirectional rolling to a foil 0.002-inches thick. Specimens were recrystallized in the alpha region and several pole figures obtained from 0 to 40 degrees. From these, the preferred orientation was found to be in a spread of idealized (11) [010] about [010].
Date: January 11, 1955
Creator: Seymour, W. & Duffey, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Sealing Radioactive Specimens in Glass Ampoules

Description: In studying the effect of neutron irradiation on certain kinds of metal wire, specimen storage was found to present a serious problem, since the specimens oxidized rapidly once removed from the protective atmosphere of the irradiation capsule. After trying several methods of storage it was found that sealing the radioactive samples in individual evacuated glass ampoules was best from both the standpoint of sample protection and minimum spread of radioactive contamination. The sealing technique … more
Date: 1955
Creator: Reynolds, Myron B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Iodine Pentafluoride-Hydrogen Fluoride System. Solid-Liquid Equilibria, Vapor Pressures, Molar Volumes and Specific Conductances

Description: Some properties of the iodine pentafluoride-hydrogen fluoride system have been investigated. The solid-liquid phase diagram show a eutectic point at -83.49 degree C. and 99.5 mole% hydrogen fluoride. The vapor pressures at 15 degree C show positives deviations from Raoult's law but no maximum vapor pressure was observed. There is a small decrease in volume on mixing, the maximum deviation from ideality being 6.6% at 90 mole% hydrogen fluoride. The specific conductance of pure iodine pentafluori… more
Date: 1955
Creator: Rogers, Max T.; Speirs, John L. & Panish, Morton B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Note on an Approximation Method of Brueckner, Levinson, and Mahmoud

Description: This note reports two calculation that we believe help to clarify the nature of the approximation made in the method Brueckner, et al, for the ground state of many-Fermion systems. The first is a formal calculation of their result for the energy in terms of two-body forward scattering amplitudes from elementary perturbation theory. We find that their result is obtained when one keeps only those terms in the perturbation expansion that depend on pair correlations. From this point of view the met… more
Date: 1955
Creator: Goad, Walter B., 1925-2000
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Adsorption of He3 and He4 on Activated Charcoal

Description: The adsorption on activated charcoal of pure He3 at 2.5 and 3°K, and of pure He4 at 4°K has been measured. The volume of gas necessary to form a monolayer is approximately the same for the two isotopes. It is shown that capillary condensation does not occur in this adsorbent at low saturations. The data have been analyzed by a number of methods with consistent results.
Date: 1956
Creator: Hoffman, C. J.; Edeskuty, F. J. & Hammel, Edward F. (Edward Frederick), 1918-
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Heat of Combustion of Calcium

Description: Calorimetric combustions of calcium metal were conducted at an initial temperate of 25 degree under an oxygen pressure of 50 atm. The energy of combustion under these conditions was to be 15,649 joules/g. The corresponding standard heat of formation of the oxide from the elements is calculated to be -628.63 +- 0.99 kjourles/mole. this value if 1.1% more positive than the previous accepted value.
Date: 1954
Creator: Huber, Elmer J., Jr & Holley, Charles E., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Equation of State of Gases by Shock Wave Measurements. II. The Dissociation Energy of Nitrogen

Description: The results of equation of state measurements made behind strong shock waves in nitrogen are consistent only with the higher of the two spectroscopically acceptable values of the dissociation energy of nitrogen, 9.764 ev.
Date: 1954
Creator: Christian, R. H.; Duff, R. E. & Yarger, F. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Laplace Transform Method of Obtaining X-ray Spectral Energy Distributions

Description: This method essentially consists of analyzing x-ray filtration data in terms of Laplace transforms and obtaining the spectral energy distribution in terms of a sum of the corresponding inverse Laplace transforms. Some of the functions which are especially suited for this application are given and a graphical method of analyzing filtration data in terms of these functions is described. Examples of the practical application of this method to several low energy x-ray machines are included with a d… more
Date: November 20, 1954
Creator: Emigh, C. Robert
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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One Million Frame per Second Camera

Description: The design and construction of a 1,000,000 fps rotating mirror frame camera is described. Twenty five consecutive pictures 20 mm in diameter can be obtained on a strip of 35 mm film. A resolution of at least 20 lines/mm is obtained on a moderately fast film like Linagraph Shellburst. Accurate synchronization of the event to be photographed is required. The camera has been most useful in the investigation of explosive and related phenomena.
Date: 1954
Creator: Brixner, Berlyn
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Infrared Spectra and Structure of the Crystalline Sodium Acetate Complexes of U(VI), Np(VI), Pu(VI), and Am(VI). A Comparison of Metal-Oxygen Bond Distance and Bond fFrce Constant in this Series

Description: Infrared spectra of solid NaXO2(Ac)3, with X=U, Np, Pu, and Am, have been observed. From the symmetric and asymmetric stretching frequencies of the O-X-O groups, approximate X-O force constants have been calculated and were found to decrease in the order kU—O>kNp—O>kPu—O> kAm—O, the respective values being about 0.705, 0.698, 0.675, and 0.612 megadyne/cm. From the cell constants for NaXO2(Ac)3 it is apparent that the X-O bond distance decreases in the same order—RU—O>RNp—O>RPu—O>RAm—O. Thus, a … more
Date: January 31, 1955
Creator: Jones, Llewellyn H., 1919-
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Mathematical Studies on Galvanic Corrosion. Part IV. Influence of Electrolyte Thickness on the Potential and Current Distributions over Coplanar Electrodes Using Polarization Parameters

Description: Extensive numerical evaluation was performed on a Fourier series derived for the potential distribution in an electrolyte lying above a plane containing infinitely long, narrow electrodes juxtaposed and arranged in an infinitely alternating array with even symmetry. In contrast to the previous studies in this series, the limitation that the electrolyte has finite depth was imposed. Four perspective drawings of the reduced potential function were made to scale to illustrate the potential variati… more
Date: 1954
Creator: Waber, James T. & Fagan, Bertha
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Crystal Structure and Thermal Expansion of Gamma Plutonium

Description: Gamma plutonium is found to be orthorhombic with eight atoms in a unit cell of dimension (1t 235 degree C) [formula]. The calculated density is [formula]. The space group is Fddd and the positions of the eight atoms are: [formula]. Each plutonium atom is bonded to ten others at an aver distance of [formula], four being at [formula], two at [formula] and found at [formula]. The mean linear coefficients of thermal expansion are found to be [formula].
Date: December 13, 1953
Creator: Zachariasen, William H. (William Houlder), 1906-1979 & Ellinger, F. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Spectrophotometric Determination of Dissociation Constants of Dibasic Acids. Methods Using a Minimum Amount of Data

Description: Two spectrophotometric methods are given for determining dissociation constants of dibasic acids. Each method is applicable for any degree of overlapping of the dissociation constants. Neither method requires a direct measurement of the extinction coefficient of any of the individual species that are in equilibrium with each other. A minimum amount of data is required in either method.
Date: January 1954
Creator: Thamer, Burton J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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