The Mass Spectra of Some Volatile Hydrides (open access)

The Mass Spectra of Some Volatile Hydrides

From abstract: "The hydrides of group VB an VB elements, except CH4 and NH3, have been prepared and, except for PbH4 and BiH3, their mass spectra studied. Fragmentation patterns and appearance potentials of the positive ions from these hydrides are reported. The ions have been tested for excess kinetic energy and this energy was found to be negligible. The average M-H bond energies and the ΔHf° obtained from appearance potential data agree well with values obtained by other methods. Evidence is cited for the existence of distibine."
Date: March 19, 1962
Creator: Saalfeld, S. E. & Svec, Harry J. (Harry John), 1918-
System: The UNT Digital Library
Radical and Molecular Reaction Mechanisms for (γ, n) Activated c11 Reactions in Liquid Cyclohexane (open access)

Radical and Molecular Reaction Mechanisms for (γ, n) Activated c11 Reactions in Liquid Cyclohexane

From abstract: "A study has been made of the yields of gaseous products labeled with C11 from the C12(γ, n) reaction in liquid cyclohexane. The effects of variations in the radiation dose and in the concentration of dissolved iodine during irradiation on the yields of these products were studied in order to elucidate the reaction mechanisms. A reaction model was developed as a method of assessing the relative importance of radical and molecular processes. The data suggest (1) that the formation of C11 labeled CH4, C2H4 + C2H6, and C3H6 involves a hot radical process while (2) the formation of C2H2 is by a molecular reaction with cyclohexane."
Date: March 21, 1962
Creator: Rack, Edward P. & Voigt, Adolf F.
System: The UNT Digital Library
αZ Correction to the Bethe-Maximon Pair Production Cross Section (open access)

αZ Correction to the Bethe-Maximon Pair Production Cross Section

From abstract: "The first order correction in αZ to the Bethe-Maximon pair production cross section is calculated for the case where the incident photon and one of the electrons has an energy much greater than mc2. Comparison of these calculations to the experimental data of Plimpton and Hammer shows an improvement ina greement between theory and experiment of approximately a factor of 1+(αZ4π/15) for low positron kinetic energies. However, for positron kinetic energies of the order of 1 Mev no improvement is obtained."
Date: March 21, 1962
Creator: Moroi, David S. & Hammer, C. L.
System: The UNT Digital Library
͟v͟ic-Dioximes as Analytical Reagents (open access)

͟v͟ic-Dioximes as Analytical Reagents

This technical report discusses the synthesis of vic-dioximes, the analysis of vic-dioximes, the structure of vic-dioximes, the structure of metal(II)-vic-dioxime complexes, and analytical applications of this research. The report includes tables and figures that accompany the report's contents and findings.
Date: March 19, 1962
Creator: Banks, Charles V.
System: The UNT Digital Library
Electrical Properties of the Tungsten Bronzes (open access)

Electrical Properties of the Tungsten Bronzes

From abstract: "The electrical resistivity of NaxWO3, LixWO3, and KxWO3 has been measured at 300°K. The range of x-values was 0.25 < x < 0.9. All resistivities were characteristic of a metal and lie on a single curve. An extrapolation of the conductivity curve to zero conductivity indicated that the tungsten bronzes should be semiconductors for x < 0.25. The resistivities that have been measured for tungsten bronzes with x < 0.25 showed semiconducting behavior. The resistivity of LixWO3 exhibited an anomalous peak in the ρ vs Τ cuve. The Hall coefficient of Li0.37WO3 indicated one free electron per alkali atom as was previously found for NaxWO3. The Seebeck coefficient of NaxWO3 depended linearly on x[superscript]-2/3 as expected from free electron theory. The implications of these and some other data are discussed."
Date: March 21, 1962
Creator: Shanks, H. R.; Sidles, Paul Howard & Danielson, G. C.
System: The UNT Digital Library
Stability Constants and Intrinsic Solubility of Several Nickel(II)-vic-Dioxime Complexes (open access)

Stability Constants and Intrinsic Solubility of Several Nickel(II)-vic-Dioxime Complexes

This technical report discusses processes to study the stability constants and intrinsic solubility of several Nickel(II)-vic-Dioxime complexes.
Date: March 19, 1962
Creator: Banks, Charles V. & Anderson, Samuel
System: The UNT Digital Library
Thorium-Molybdenum Phase Diagram (open access)

Thorium-Molybdenum Phase Diagram

From abstract: "The phase diagram of the thorium-molybdenum alloy system has been determined to be the eutectic type with a eutectoid reaction associated with the thorium alpha-beta transformation. X-ray, thermal, electrical resistance and metallographic methods have established the eutectic point at 1380 ± 10°C and 7.0 ± 0.5 wt % molybdenum. A eutectoid reaction is proposed at 1358 ± 5°C and less than 0.1 wt % molybdenum. No solubility of thorium in molybdenum was detected at 1325°C."
Date: March 27, 1962
Creator: McMasters, O. D.; Palmer, P. E. & Larsen, W. L.
System: The UNT Digital Library
Some Observations Regarding Rare-Earth Lactates (open access)

Some Observations Regarding Rare-Earth Lactates

From abstract: "Lactates of all the rare earths except lanthanum, cerium, and praseodymium were prepared and studied. In the case of lanthanum, cerium, and praseodymium the lactates are apparently so soluble that they cannot be crystallized directly from aqueous solution. Products obtained by addition of anhydrous ethanol to sirupy solutions of the light-rare-earth lactates were not well characterized and were deliquescent. Neodymium lactate trihydrate was prepared only by the addition of alcohol to a sirupy solution. Since it was not as deliquescent as the lactates of lanthanum, cerium, and praseodymium, some of its properties could be studied. The lactates of all the other rare earths, samarium through lutetium, as well as the lactate of yttrium, separated readily from aqueous media as trihydrates--the solubility of the hydrated lactate decreasing as the atomic number of the rare earth increased. Thermal decomposition of the crystalline lactates, except those of neodymium and samarium, proceeded through dihydrated and anhydrous states to a composition corresponding roughly to LnlacCO3 at a temperature of about 290-300°C. Ln2(CO3)3 or Ln2O(Co3)2 were observed. In order to make a comparison, thermal decomposition of the rare-earth glycolates was studied also. Solubilities in water at both 20 and 60°C have been tabulated."
Date: March 28, 1962
Creator: Powell, J. E. & Farrell, J. L.
System: The UNT Digital Library
Shielding Measurements at the SM-1 Reactor : June 1961 (open access)

Shielding Measurements at the SM-1 Reactor : June 1961

Abstract: Neutron flux and gamma radiation measurements through the SM-1 primary shield were made at the startup of Core II in June 1961. They extend previous measurements (APAE-35) both vertically and horizontally in the primary shield and in the rod drive pit. Dose rate measurements on spent fuel elements under water are also reported.
Date: March 16, 1962
Creator: Moote, F. G. & Obrist, C. H.
System: The UNT Digital Library
Nuclear Superheat Quarterly Project Report: Eighth Quarter, April-June 1961 (open access)

Nuclear Superheat Quarterly Project Report: Eighth Quarter, April-June 1961

From introduction: "This is the eighth of a series of quarterly reports which will cover the progress and results from the conceptual design, economic evaluations and research and development work performed by the General Electric Company as part of the Nuclear Superheat Project."
Date: March 1962
Creator: Pennington, R. T.
System: The UNT Digital Library
Plutonium Recycle Test Reactor Final Safeguard Analysis: Supplement 4, Gas-Cooled Loop Anaysis (open access)

Plutonium Recycle Test Reactor Final Safeguard Analysis: Supplement 4, Gas-Cooled Loop Anaysis

Plutonium Recycle Test Reactor (PRTR) final safeguards analysis involving a gas-cooled loop.
Date: March 1962
Creator: Wittenbrock, N. G.
System: The UNT Digital Library
Magnetic Force Welding Sintered Aluminum Powder Materials (open access)

Magnetic Force Welding Sintered Aluminum Powder Materials

Report discussing the use of sintered aluminum powder for nuclear fuel cladding. This report includes descriptions of pertinent materials and experimental procedures.
Date: March 1962
Creator: Mills, L. E.
System: The UNT Digital Library
Strength and Metallurgical Properties of the Zircaloy-2 Pressure Tubes for the Plutonium Recycle Test Reactor (open access)

Strength and Metallurgical Properties of the Zircaloy-2 Pressure Tubes for the Plutonium Recycle Test Reactor

Report describing the properties of the Zircaloy pressure tubes at the Plutonium Recycle Test Reactor. Topics include the fabrication of these tubes, their mechanical properties, and operating stresses.
Date: March 1962
Creator: Knecht, R. L. & Pankaskie, P. J.
System: The UNT Digital Library
Annual Progress Report on Fuel Element Development for Fiscal Year 1961 (open access)

Annual Progress Report on Fuel Element Development for Fiscal Year 1961

Report that reviews the yearly progress made in Reactor Fuel and Materials Development Program at the Engineering Test Reactor (ETR) and Materials testing reactor (MTR).
Date: March 9, 1962
Creator: Gibson, G. W. & Shupe, O. K.
System: The UNT Digital Library
Summary Report of Analysis of Physics Measurements Performed on SM-1 Core I (open access)

Summary Report of Analysis of Physics Measurements Performed on SM-1 Core I

Abstract: This technical report contains a comprehensive analysis of the nuclear characteristics of the SM-1 Core I. Comparison of analytical and experimental results for neutron ages and core reactivities of a variety of cases investigated shows that the MUFT III with P-1 slowing down approximation gives the best results. At startup the core reactivity and rod bank worth under various operating conditions are investigated and compared to experiment. Core lifetime was calculated to be 16.8 MWYR compared to 16.4 MWYR experimental. The temperature coefficient has been calculated and compared to experiment as function of burnup. In Appendix A, flux distribution, temperature coefficient, effective delayed neutron fraction and core life are analyzed by Dr. R. L. Murray by one and two group modified theory series expansion calculations.
Date: March 30, 1962
Creator: Lois, L.; Paluszkiewicz, S.; Fried, B. E. & Beam, R. H.
System: The UNT Digital Library
On Certain Finite Difference Schemes for the Equations of Hydrodynammics (open access)

On Certain Finite Difference Schemes for the Equations of Hydrodynammics

"We will consider two finite difference schemes for the solution of the Navier-Stokes equations in one space dimension. The first is a method used by Lax and Wendroff. The second method is based on an approximate solution of the centered, implicit difference equations. Since this approximate solution is obtained by successive substitutions, we will refer to this second method as an iterative method."
Date: March 1, 1962
Creator: Gary, John William
System: The UNT Digital Library