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Atomic Energy Commission Reports
156
Hanford Works Reports
90
HW (Series)
63
University of California Radiation Laboratory Reports
52
BNL (Series)
44
Brookhaven National Laboratory Reports
44
Oak Ridge National Laboratory Reports
37
CF (Series)
20
UCRL (Series)
19
Los Alamos National Laboratory Reports
17
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400 Matching Results
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Glove Box Integrity Study
The amount of dry air or inert gas supplied to a "one pass" glove box ventilation system is proportional to the glove box inleakage. Most glove boxes in the 234r5 Building are equipped with sundry attachments, each contributing to the inleakage. No individual leak rate date is available for these auxiliary components in the "as installed" condition. Nor is the effect of time upon the leak rates known. Knowledge of these values, or at least an indication of the order of magnitude of the leakage attributable to each item, would provide a basis for analyzing glove box ventilation problems and for establishing criteria for new glove box designs.
Date:
March 8, 1960
Creator:
Ciccarelli, R. A.
Object Type:
Report
System:
The UNT Digital Library
Transition Probabilities For Low Lying Electronic States In C2
The probabilities for nine electronic transitions among the low lying excited states in the C2 molecule are calculated by the dipole moment operator method and are given in the form of oscillator strength (or f values).
Date:
March 25, 1960
Creator:
Clementi, Enrico
Object Type:
Report
System:
The UNT Digital Library
Measurement of the Friction Characteristics for Flow in the ART Fuel-to-NaK Heat Exchanger
The friction characteristics of a full-scale straight-tube model of the ART fuel-to-NaK heat exchanger were determined experimentally. The presence of the spacers resulted in a transition to semi-turbulent flow at a Reynolds modulus of 350. this semi-turbulent flow persisted up to a Reynolds modulus of 5,000. The circumferential spacers were found to contribute slightly more than the radial spacers to the pressure loss in the heat exchanger.
Date:
March 19, 1957
Creator:
Cohen, S. I. & Jones, T. N.
Object Type:
Report
System:
The UNT Digital Library
Initial Conditions for the Dynamic Pinch
Abstract: "The experimental formation of the dynamic pinch has been an art based upon available electrical condensers, available glass and quartz tubing and an empirically determined gas pressure range. This report attempts to correlate some of this empirical information with the processes of ionization, insulator wall heating, magnetic field penetration, and shock hydrodynamics."
Date:
March 1957
Creator:
Colgate, Stirling A.
Object Type:
Report
System:
The UNT Digital Library
Ionization in Crossed Electric and Magnetic Fields
Both in magnetohydrodynamic shocks and in accelerated partially ionized gas flow across a magnetic field, space charge separation occurs that establishes very large electric fields in the direction of motion. The width of the current layers associated with the acceleration is never less than the electron Larmor radius with no collisions and is broadened by electron collisions to a width solely determined by the effective resistivity. The electrons gain an energy regardless of collisions equal to the electric potential difference across the layer. This potential corresponds to the change in kinetic energy of mass motion per ion. For slightly ionized gases, the additional stress of neutral ion collisions within the layer can make the electric potential and hence gain in electron energy very large for only modest changes in mass velocity. Hence ionization may occur when the change in kinetic energy of the ions is small compared to the ionization potential.
Date:
March 15, 1961
Creator:
Colgate, Stirling A.
Object Type:
Report
System:
The UNT Digital Library
Collapse : The Shock Heating of a Plasma
There have been numerous independent suggestions to use high speed shocks to heat deuterium gas to thermonuclear temperature (E. Teller, R.R. Wilson, H. Grad, W. Marshall)², and extensive experimental work in this field is being carried on by, e.g., Kolb³, and S. Janes⁴. Our own work in this field has been directed towards a fundamental understanding of the strong shock process in the limit of no particle collision, to find out if within this limit the ion heating following the passage of the shock is large enough to give rise to a thermonuclear reaction.
Date:
March 7, 1958
Creator:
Colgate, Stirling A. & Wright, R. E.
Object Type:
Report
System:
The UNT Digital Library
The Spectrochemical Analysis of Hafnium and Zirconium
Abstract: "The analysis of hafnium and zirconium by the copper spark technique is presented for solutions of HCl, HF, and HClO4 acids. The special techniques of electrode protection and vacuum drying of perchloric acid samples are outlined. Also given are the working curves and deviations of both elements."
Date:
March 16, 1949
Creator:
Conway, John G. & Moore, Milton F.
Object Type:
Report
System:
The UNT Digital Library
Hazards Summary Report for the SM-1 Core Temperature and Flow Instrumentation: Task XIV
Abstract; This technical report describes the changes in the SM-1 incurred by the experiment, Core Temperature and Flow Instrumentation (Task XIV), and evaluates the possible hazard involved in these changes. Temperature and flow measurements will be taken on a Task XIV instrumented stationary fuel element, instrumented control rod fuel element and other selected points in the SM-1 core to provide data on the core steady state and transient performance. The hazards evaluation consists of a nuclear evaluation, thermal and hydraulic analysis, description of tests to be performed, and discussion of containment integrity and maximum accident considerations.
Date:
March 30, 1961
Creator:
Coombe, J. R.; Brondel, J. O.; Lee, D. H. & Matthews, F. T.
Object Type:
Report
System:
The UNT Digital Library
Hazards Report for the SM-1 Core II With Special Components
Abstract: This technical report describes the changes incurred in the SM-1 by the insertion of the SM-1 Core II and special components. The special components consist of impact specimens, a boron gradient rod, SM-2 elements, a PM-1-M element, and high burnup SM-1 Core I elements. The change in hazards, due to operation of SM-1 with Core II and the special components is evaluated. The analysis indicates there is no change in hazards.
Date:
March 30, 1961
Creator:
Coombe, J.; Lee, D.; Segalman, I. & Robertson, R.
Object Type:
Report
System:
The UNT Digital Library
Quarterly Report Technology of Non-Production Reactor Fuels Reprocessing Budget Activity 2790
This report summarizes the research and development work carried out during June, July, and August, 1959, for Budget Activity 2790- Separations Development for Non-Production Reactors. The effort on Activity 2790 - Separations Development for Non-Production Reactors. The effort on Activity 2790 will enable Hanford to begin reprocessing in January, 1962, the fuel elements from power reactors which employ depleted or slightly enriched uranium fuels.
Date:
March 17, 1958
Creator:
Cooper, V. R.
Object Type:
Report
System:
The UNT Digital Library
Anisotropic Elastic Scattering of Neutrons
In an elastic collision the neutron loses part of its kinetic energy to the nucleus with both the kinetic and momentum of the system being conserved. However, for many elements the scattering is not isotropic in the center-of-mass system at the higher neutron energies. Many of the present reactor multigroup codes include anisotropic scattering at the high neutron energies, while many others assume isotropic scattering at all energies. In order to consider some of the effects of including anisotropic scatting, reference is made t the multigroup equation generally assumed for the slowing-down density.
Date:
March 21, 1957
Creator:
Copenhaver, C. M.
Object Type:
Report
System:
The UNT Digital Library
Static Corrosion Behavior of Construction Materials in an Environment of Liquid Bismuth Base Metals at 550° C
Technical report presenting preliminary results obtained in the static corrosion test program to screen promising construction materials for a proposed liquid fuel power breeder reactor.
Date:
March 1, 1952
Creator:
Cordovi, M. A.
Object Type:
Report
System:
The UNT Digital Library
A Preliminary Report on Health Physics Problems at the Brookhaven Alternating Gradient Synchrotron (AGS)
This report discusses the alternating gradient synchrotron at Brookhaven National Laboratory and provides a preliminary discussion on experiences to date and experiments in progress.
Date:
March 5, 1962
Creator:
Cowan, F. P.
Object Type:
Report
System:
The UNT Digital Library
Personnel Dosimetry of Very High Energy Radiation
Before discussing personnel monitoring of high energy radiations, it is appropriate to comment briefly on two basic methods of dosimetry applicable to such situations. In the first of these methods, one measures the rad dose in air with a tissue-equivalent ionization chamber that is operated with enough voltage on the collecting electrode to insure saturation even when the radiation is concentrated in short pulses, as is frequently the case. The linear energy transfer (LET) spectrum of the radiation is then determined and an average value of relative biological effectiveness (RBE) is determined. An experimental evaluation of the depth dose situation completes the data necessary for a full evaluation of the biological hazards. The method is completely general but is most applicable to situations where a substantial proportion of high energy components is present in the mixed radiation. It should be noted that the detailed composition of the radiation need not be known. Thus, components of dosage to which an RBE of 1 is assigned may be due to X-rays, gamma rays, or the ionization tracks produced by protons in the Gev energy range as well as by many other types of radiation. This method is applied frequently to the situation …
Date:
March 8, 1963
Creator:
Cowan, Fredrick P.
Object Type:
Report
System:
The UNT Digital Library
Stratospheric Monitoring Program
"Results of the continuing stratospheric flight test evaluation program for the Del Model I Electrostatic Precipitator Sampler and the Del Electrical Discharge Altimeter are described and discussed. Only one of four balloon launches reached floating altitude. The altimeter obtained an altitude recording consistent with concurrent aneroid barocoder readings. The reported gross gamma concentration for the precipitator sampler was approximates 25 and 80% higher than those of the two simultaneous direct flow filter samples. The completion of the design and construction of two prototype units of the Del Electrical Discharge Altimeter and their laboratory evaluation are described. A preliminary design concept is presented for an operational high volume electrostatic precipitator sampler to operate with high collection efficiency at an ambient flowrate of 500 cfm throughout the altitude range 100,000 to 150,000 ft."
Date:
March 15, 1963
Creator:
Cravitt, S.; Lilienfeld, P.; Foldes, A. & Lippmann, M.
Object Type:
Report
System:
The UNT Digital Library
The U + 4 - U02 ++ Couple in H2SO , and the U + S - u + 4 Couple in HCl
Technical report: Measurements have been made on the equilibrium between Cu, Cu2+, U4+, and UO22+ in H2SO4 in an attempt to establish the value of the U4+ - UO22+ couple potential. The value of the formal potential for the U3+ - U4+ couple in 1N HCl at 0 degrees C was determined to be + 0.65 v.
Date:
March 19, 1946
Creator:
Cubicciotti, D.
Object Type:
Report
System:
The UNT Digital Library
Preferred Orientation in Uniskanned Zirconium
A knowledge of the preferred orientation of the crystal aggregates in pile structural materials is of basic importance in the attempt to understand their behavior under operating conditions. The effect of a preferential alignment of crystallites in enisotropic materials is to create a directional variation in physical and mechanical properties. In most applications directional effects are undesirable and efforts are usually made during fabrication to avoid the conditions which cause the orientation or, if possible, to alleviate the condition by proper heat treatments after the forming process if the orientation persists. Some of the variables that affect the type and degree of preferred orientation is metals during the forming process include working temperature, per cent reduction, the nature of the applied forces used, the crystal structure, and the inherent deformation mechanisms of the metal.
Date:
March 5, 1956
Creator:
Cummings, W.V. & Kling, E.N.
Object Type:
Report
System:
The UNT Digital Library
Solubility relationships of acidified stored metal wastes
The reports aims to determine the solubility limitation of concentrations of uranium in the food preparation step of the tributyl phosphate waste metal recovery process, and the subsequent solubilities in the RA column.
Date:
March 24, 1950
Creator:
Curtis, M. H.
Object Type:
Report
System:
The UNT Digital Library
Preliminary Evaluation of Chlorine for Use as a Gas Cooled Reactor Safeguard*
A coolant line rupture during operation of a high temperature gas cooled graphite moderated reactor would present a serious hazard. The reactor would immediately depressurize and a great deal of air would be introduced into the coolant stream. As the air passed over the graphite moderator a runaway oxidation reaction would probably ensue unless an adequate safety system were available. This investigation was designed to evaluate chlorine as a reactor safeguard to be used to control a runaway reaction. Throughout this study, a small amount of chlorine in an air stream has demonstrated the ability to substantially reduce the oxidation rate of graphite. This has been the case even where the principal oxidizing agent was molecular oxygen or ozone.
Date:
March 8, 1960
Creator:
Dahl, R. E.
Object Type:
Report
System:
The UNT Digital Library
Radiation Dose Received by Passengers and Crew on Planes Carrying the Maximum Number of Radiation Units
The dose of ionizing radiation received by passengers and crew members traveling on commercial airlines which transport radioisotopes is of interest to all persons who travel the airways frequently. Tariff regulations permit the air transport of 40 units of radioactive materials where one unit represents a quantity of radioisotopes which when packaged delivers a dose rate of one mr/hr at a distance of one meter from the center of the package. Using five different types of commercial aircraft, shipments of radioisotopes were simulated and dose levels determined at various locations in the aircraft under conditions normal to commercial travel. The survey indicates that the tariff regulations should be amended giving consideration to the type of aircraft involved.
Date:
March 1, 1957
Creator:
Davis, D. M.; Hart, J. C. & Warden, A. D.
Object Type:
Report
System:
The UNT Digital Library
Progress Relating to Civilian Applications During February, 1956
A report about aluminum-clad fuel elements, fuel-element development, zirconium uranium alloys, corrosion of zirconium, and reactor material development.
Date:
March 1, 1956
Creator:
Dayton, Russell W.
Object Type:
Report
System:
The UNT Digital Library
Progress Relating to Civilian Applications During February, 1957
A report about the design and construction of equipment for thermal-conductivity measurements of irradiated encapsulated uranium. Metallographic techniques used to confirm solubility limits of uranium in thorium, previously determined by electrical resistivity and X-ray data, have been unsuccessful.
Date:
March 1, 1957
Creator:
Dayton, Russell W. & Tipton, Clyde R., Jr.
Object Type:
Report
System:
The UNT Digital Library
Progress to Civilian Applications During February, 1958
A report about the fabrication of dummy fuel-pls assemblies which are to be used in the engineering test loop at the MTR.
Date:
March 1, 1958
Creator:
Dayton, Russell W. & Tipton, Clyde R., Jr.
Object Type:
Report
System:
The UNT Digital Library
Hydroxides as Moderator Coolants in Power-Breeder-Reactors
The following report describes work that was udertaken to determine whether a homogeneous breeder reactor using an alkili metal hydroxide solution is capable of breeding.
Date:
March 26, 1952
Creator:
Dayton, Russell Wendt & Chastain, Joel W.
Object Type:
Report
System:
The UNT Digital Library