States

Computer Technique for Tracing Seismic Rays in Two-Dimensional Geological Models (open access)

Computer Technique for Tracing Seismic Rays in Two-Dimensional Geological Models

The following report describes the computer technique for tracing seismic rays in two-dimensional geological models in the state during the time this report was written, and presents some preliminary results.
Date: June 4, 1968
Creator: Yacoub, Nazieh K.; Scott, James H. & McKeown, F. A.
System: The UNT Digital Library
Computer Technique for Tracing Seismic Rays in Two-Dimensional Geological Models: Explanation of Figures 7a-d, 8a-c and 9a-d (open access)

Computer Technique for Tracing Seismic Rays in Two-Dimensional Geological Models: Explanation of Figures 7a-d, 8a-c and 9a-d

The following report explains the seismic ray models presented in this report.
Date: June 4, 1968
Creator: Yacoub, Nazieh K.; Scott, James H. & McKeown, F. A.
System: The UNT Digital Library
Close-in Air Blast from a Row Charge in Basalt (open access)

Close-in Air Blast from a Row Charge in Basalt

From abstract: Close-in air blast measurements were made on the Dugout shot. Major constituents of the blast wave were the ground-shock-induced pulse and the pulse from venting gases. The ground-shock-induced pulse was the dominant one at all stations.
Date: August 4, 1965
Creator: Vortman, Luke J.
System: The UNT Digital Library
Project Sulky: Preshot Geologic Investigations (open access)

Project Sulky: Preshot Geologic Investigations

From abstract: A comprehensive geologic and engineering investigation was undertaken at the site on Buckboard Mesa selected for the SULKY event, a nuclear cratering experiment, conducted in dry basalt.
Date: August 4, 1965
Creator: Nugent, R. C. & Banks, D. C.
System: The UNT Digital Library
Geologic Map of the Thirsty Canyon Quadrangle, Nye County, Nevada (open access)

Geologic Map of the Thirsty Canyon Quadrangle, Nye County, Nevada

The following report provides a geologic map of the Thirsty Canyon quadrangle in Nye county, Nevada.
Date: June 4, 1965
Creator: O'Connor, J. T.; Anderson, R. E. & Lipman, P. W.
System: The UNT Digital Library
Effects of Thermal Shrinkage on Built-up Roofing (open access)

Effects of Thermal Shrinkage on Built-up Roofing

From Introduction: "The object of this research was to identify and study some of the factors involved in premature failures and to relate the pertinent factors to roof performance."
Date: March 4, 1965
Creator: Cullen, William C.
System: The UNT Digital Library
On the Formulation and Numerical Evaluation of a set of Two-Phase Flow Equations Modelling the Cooldown Process (open access)

On the Formulation and Numerical Evaluation of a set of Two-Phase Flow Equations Modelling the Cooldown Process

Summarizes progress to date on the formulation and numerical integration of systems of equations modeling general two-phase flows in a pipe.
Date: January 4, 1965
Creator: Jarvis, Stephen, Jr.
System: The UNT Digital Library
Creep and Drying Shrinkage of Lightweight and Normal-Weight Concretes (open access)

Creep and Drying Shrinkage of Lightweight and Normal-Weight Concretes

From Scope of Investigation: "The work reported here is part of a continuing program concerning the long-term volume changes in concretes made from lightweight and normal-weight aggregates. The creep, drying-shrinkage, and strength data presented are for concretes made with 24 expanded shale lightweight aggregates and 5 natural, normal-weight aggregates. These aggregates were from widely separated geographical locations and were to be representative samples of aggregates being used in the production of structural concretes."
Date: March 4, 1964
Creator: Reichard, T. W.
System: The UNT Digital Library
Reactions in Tracks of High Energy Particles (open access)

Reactions in Tracks of High Energy Particles

Abstract. An a priori calculation of the radiolysis of oxygen gas in the pressure ; range 10-3 to 100 atm has been made. In the low background region (1- 100 atm) all track effects have been considered. The calculated G(O3) values seem to be in reasonable agreement with experiment if only one excited oxygen molecule is initially formed per ion pair. Effects of pressure, LET and dose rate have been discussed. The radiation-induced chain decomposition of O3 has not been considered.
Date: June 4, 1963
Creator: Fueki, Kenji & Magee, John L., 1914-
System: The UNT Digital Library
Maritime Reactor Project Annual Progress Report: for Period Ending November 30, 1962 (open access)

Maritime Reactor Project Annual Progress Report: for Period Ending November 30, 1962

Report documenting research and developments made by the Maritime Reactor Program of the Oak Ridge National Laboratory.
Date: April 4, 1963
Creator: Oak Ridge National Laboratory
System: The UNT Digital Library
Joint National Institute for Health-Atomic Energy Commission Zonal Centrifuge Development Program, Semiannual Report for Period July 1 - December 31, 1962 (open access)

Joint National Institute for Health-Atomic Energy Commission Zonal Centrifuge Development Program, Semiannual Report for Period July 1 - December 31, 1962

This technical report describes development work done on zonal centrifuge systems at the Oak Ridge National Laboratory and the Oak Ridge Gaseous Diffusion Plant during the period July 1 to December 31, 1962 under the Joint National Institute for Health-Atomic Energy Commission Zonal Centrifuge Development Program. A basic purpose of this project is to develop new methods for isolating virus particles associated with cancerous cells and tissues. Three classes of rotor systems capable of separating particles ranging in size from whole animal or plant cells to protein or nucleic acid molecules on the basis of either sedimentation rate or density alone have been developed. Experiments with phage particles indicate the feasibility of large-scale virus isolation by continuous-flow centrifugation, followed by isopycnic banding in cesium chloride and velocity sedimentation in sucrose - all steps being carried out sequentially in the same rotor. Zonal rotors using the reorienting gradient principle for molecular separations have been tested to 141,000 rpm (formula). Previous work on zonal centrifugation and future plans for this program are discussed.
Date: March 4, 1963
Creator: Anderson, N. G.
System: The UNT Digital Library
Propagation Characteristics of Capillary Ripples, I. The Theory of Velocity Dispersion and Amplitude Attenuation of Plane Capillary Waves on Viscoelastic Films (open access)

Propagation Characteristics of Capillary Ripples, I. The Theory of Velocity Dispersion and Amplitude Attenuation of Plane Capillary Waves on Viscoelastic Films

From abstract: "The boundary value problem for velocity of propagation and attenuation of capillary ripples over viscoelastic surface films is set up and solved from the viewpoint of continuum hydrodynamics. Both soluble and insoluble films are treated. Successive approximation methods are used to derive explicit formulae for velocity of propagation and amplitude attenuation; formulae for these quantities accurate to second order are given for slightly viscoelastic and highly viscoelastic films, and formulae accurate to first order are given for films of intermediate viscoelasticity."
Date: January 4, 1963
Creator: Hansen, Robert S. & Mann, J. Adin, Jr.
System: The UNT Digital Library
Computer Programs Using Zonal Harmonics for Magnetic Properties of Current Systems with Special Reference to the IBM 7090 (open access)

Computer Programs Using Zonal Harmonics for Magnetic Properties of Current Systems with Special Reference to the IBM 7090

Report that "discusses the magnetic vector and scalar potentials, magnetic field components and their derivatives, and flux linkage for single current systems, and the mutual inductance, forces and torques between two such systems, whose axes are coplanar but not necessarily coincident" (p. 1).
Date: December 4, 1962
Creator: Garrett, M. W.
System: The UNT Digital Library
Design Criteria for Lithium-Cooled Reactor Experiment (LCRE) at NRTS (open access)

Design Criteria for Lithium-Cooled Reactor Experiment (LCRE) at NRTS

This technical report provides design criteria for reactor test facilities utilizing existing structures at the former ANP area of the National Reactor Testing Station (NRTS) near Idaho Falls, Idaho. The information and specifications presented establish the basis for the design of facilities providing the capability for installation, extended nuclear testing and remote disassembly of the 10mw Lithium-Cooled Reactor Experiment (LCRE). Facility structural and process design has been developed to the extent required to assure the safety and technical feasibility of the proposed facilities for reactor operation.
Date: September 4, 1962
Creator: Hedden, D. T.
System: The UNT Digital Library
Rare Earth Metal - Metal Halide Systems, Lanthanum, Cerium, and Praseodymium Bromides (open access)

Rare Earth Metal - Metal Halide Systems, Lanthanum, Cerium, and Praseodymium Bromides

Technical report. From Abstract : "The MBr3 + M phase diagrams for lanthanum, cerium, and praseodymium are presented. Lanthanum and cerium exhibit simple solutions of metal, with 14 and 12 mole % dissolved at eutectic temperatures of 728 and 687°, respectively. The compound PrBr2.38 is found, melting incongruently to a solution of 16% Pr in PRBr3 and Pr(s) at 601°. For praseodymium the cryoscopic behavior of dilute solutions of metal is consistent with the primary formation of the Pr2+ solute. But with lanthanum and cerium the results are anomalous, as the cryoscopic analyses indicate 1.6-1.7 and 2.0 new particles (cation basis) per metal dissolved instead of ~3."
Date: September 4, 1962
Creator: Sallach, Robert A. & Corbett, John D.
System: The UNT Digital Library
Cosmogenic Carbon-14 and Chlorine-36 in Meteorites (open access)

Cosmogenic Carbon-14 and Chlorine-36 in Meteorites

In 1947 Bauer, and later independently Huntley (1948), pointed out that the helium content of iron meteorites as measured by Paneth and coworkers could be accounted for by the accumulation through cosmic-ray production rather then the decay of uranium and thorium. Bauer (1947) also predicted that the meteroitic helium should contain a significant proportion of He3. I was realized that by studying the effects of cosmic radiation on meteorites much could be learned about the history of meteorite and cosmic radiation. Chemical and instrumental techniques have been developed for the isolation, purification, and measurement of cosmic-ray-induced C14 in both stone and iron meteorites. The isolation of carbon from the silicate materials is done by fusion in an oxidizing flux in a vacuum system. From the iron meteorites the carbon is recovered by the decomposition of the metal in nitric acid in a closed system.
Date: June 4, 1962
Creator: Goel, Parmatma S.
System: The UNT Digital Library
Time Dependence of Space Charge Beam Losses in the Cosmotron (open access)

Time Dependence of Space Charge Beam Losses in the Cosmotron

An investigation was made of Cosmotron intensity versus time through the entire time interval from the beginning of injection to the completion of r-f capture. The induction electrode signal was used for the instantaneous measurement of beam intensity. Oscilloscope displays of the signal were photographed and traced. Base lines were filled in on the tracings and the area of the pulses measured with a polar planimeter. It was found that the relation losses of beam intensity increase with injection intensity (total injected charge), and that most of the losses take place in the time interval between the end of injection and the completion of the first synchrotron oscillation
Date: January 4, 1962
Creator: Barton, M. Q. & Sacharidis, E. J.
System: The UNT Digital Library
Non-Linear Bunch Motion at Transition (open access)

Non-Linear Bunch Motion at Transition

A summary of the dynamic behavior of the proton bunches in the Brookhaven Alternating Gradient Synchrotron (AGS) has been given previously. In these reports, the usual linearization of the differential equations involved has been made and the theory was restricted to well bunched beams. The linearized approach is no longer valid at transition where the actual phase angle of the bunch can differ appreciably for a short time from the stable phase angle Φ₀. In this report the non-linearity of the differential equations for phase oscillations will no longer be neglected. At transition the beam is slow enough so that the electronics of the bootstrap system can be considered as being ideal and the radius servo loop can be characterized by one time constant. Under these assumptions the analysis can be carried out in a two-dimensional phase plane. The essential new result will be the short existence of a stable equilibrium point for the bunch motion not coinciding with Φ₀. The results here derived have been tested experimentally and at least a qualitative agreement was found. However, the conclusions are no more valid if debunching takes place since we have still neglected the finite bunch width.
Date: December 4, 1961
Creator: Hahn, Harald
System: The UNT Digital Library
Scintillation Spectrometer Measurements of Capture Gamma Rays From Natural Elements: First Quarterly Report (open access)

Scintillation Spectrometer Measurements of Capture Gamma Rays From Natural Elements: First Quarterly Report

From abstract: "The objective of this program is to make a compilation of neutron capture gamma ray spectra of the naturally occurring elements, covering both the low and high energy region, using Na I(TI) scintillation detectors...During this phase of the program a detection system, together with its associated shielding was constructed and tested."
Date: October 4, 1961
Creator: Greenwood, Reginald C. & Stone, C. A.
System: The UNT Digital Library
A Pulsed Nanosecond Light Source (open access)

A Pulsed Nanosecond Light Source

A system for scintillations from nuclear events has been developed and is presently in use at the Lawrence Radiation Laboratory. This paper primarily describes the pulsed light source used to simulate nuclear events; it also describes the necessary nanosecond pulse techniques to measure the light source parameters and to operate large numbers of lamps. Considerations concerning distribution networks are shown. Use of the light source as a spark gap trigger is also discussed.
Date: August 4, 1961
Creator: Innes, Thomas G. & Kerns, Quentin A.
System: The UNT Digital Library
Improved Zirconium Alloys: Monthly Report 12, April 1961 (open access)

Improved Zirconium Alloys: Monthly Report 12, April 1961

Monthly report the progress and development of improved zirconium alloys for service in superheated water and steam. This report covers the period between April 1 to April 31, 1961 and was conducted by the United States and the European Atomic Energy Community (EURATOM).
Date: May 4, 1961
Creator: Weinstein, Daniel & Holtz, F. C.
System: The UNT Digital Library
Cyclotrons (open access)

Cyclotrons

The structure and operation of cyclotrons are discussed. Factors limiting cyclotron size and energy are given. Improvements to the basic continuous-wave cyclotron are described, including frequency modulation, strong focusing, and variable-energy facilities.
Date: April 4, 1961
Creator: Smith, Bob H.
System: The UNT Digital Library
Instrumentation Of Multi-Channel Counting Experiments (open access)

Instrumentation Of Multi-Channel Counting Experiments

Recent experience in instrumentation of several nuclear-physics experiments has demonstrated the feasibility of automating the data-acquisition phases of the experiment. Electronic circuits are employed wherever the rate of data flow would be slowed by the use of human operations. Information is selected, temporarily stored, and then recorded in a form suitable for immediate entry into a computer. Experimenters thus freed from the tedious aspects of data collection can devote their time to studying the results of the experiments. Potentially useful nuclear events are first selected by the fast-logic part of the instrumentation. Circuits performing simple logical functions are packaged in modular form for easy grouping into particular coincidence, gating, and mixing configurations. Circuits with slower response times are used for temporary storage and recording operations. Automatic test routines are used to initially align the equipment as well as provide continuous calibration during the experiments. Some of the high-speed circuits are described as well as the methods used to incorporate them into a large counting system.
Date: April 4, 1961
Creator: Kirsten, Frederick A. & Mack, Dick A.
System: The UNT Digital Library
Sulfex Process: Engineering-Scale Semicontinuous Decladding of Unirradiated Stainless Steel-Clad UO2 and UO2-ThO2 (open access)

Sulfex Process: Engineering-Scale Semicontinuous Decladding of Unirradiated Stainless Steel-Clad UO2 and UO2-ThO2

An engineering-scale demonstration of the Sulfex process indicated that semi-continuous decladding of unirradiated stainless steel-clad UO2 or U02ThO2 fuels is feasible.
Date: April 4, 1961
Creator: Finney, B. C. & Hannaford, B. A.
System: The UNT Digital Library