States

Borehole Gravity Meter Observations in Drill Hole UCe-18, Hot Creek Valley, Nye County, Nevada (open access)

Borehole Gravity Meter Observations in Drill Hole UCe-18, Hot Creek Valley, Nye County, Nevada

Abstract: "Drill hole UCe-18 was successfully logged with the U.S. Geological Survey-La Coste Romberg borehole gravity meter to a depth of 6,488 feet. That density increases with depth is apparent in both the alluvium and volcanic rock. The in situ density of the alluvium measured by the gravity meter ranges from 1.77 to 2.34 gm/cc; the lake beds beneath the alluvium have a density of 2.22 gm/cc; and the rhyolitic rocks range in density from 2.26 to 2.47 gm/cc. The average density determined from the borehole gravity meter data for the alluvium plus the lake beds is 2.22 gm/cc and for the volcanic rocks is 2.35 gm/cc."
Date: October 2, 1967
Creator: Healey, D. L.
System: The UNT Digital Library
An Engineering Method for Calculating Protection Afforded by Structures Against Fallout Radiation (open access)

An Engineering Method for Calculating Protection Afforded by Structures Against Fallout Radiation

From Introduction: "The purpose of the paper is to discuss the assumptions and the reasoning by which the calculations described in the Engineering Manual were derived from the data in [1]. The relevant curves from [1] are given in Appendix A and the technical charts from the Engineering Manual are given in appendix B."
Date: July 2, 1964
Creator: Eisenhauer, Charles
System: The UNT Digital Library
The Thermal Conductivity of Uranium Monocarbide (open access)

The Thermal Conductivity of Uranium Monocarbide

Uranium carbide shows promise as a fuel material for reactors operating at relatively high temperatures based on its high melting point, high uranium density and high thermal conductivity. Before refined reactor designs can be made, however, good quantitative data on the thermal conductivity at temperatures in excess of 1000C is required. This technical report presents data gathered as part of a continuing study aimed at determining the thermal conductivity of refractory uranium fuels as a function of temperature, density and composition over the temperature range 1000-2200C. At the inception of this program it was felt that an absolute method capable of achieving high temperatures was necessary and that the difficulties encountered in fabricating the large complex specimens needed were justified. The steady state radial heat flow method and apparatus of Rasor and McClelland were therefore chosen. The technical report discusses the experimental equipment and presents results of measurements on three specimens of UC over a temperature range 900 to 1600C. An analysis of the data is made with respect to other physical properties of the material and the measured conductivities are compared with the work of other investigators.
Date: April 2, 1964
Creator: Sobon, J. T.; Miller, A. D. & DeCrescente, M. A. (Michael A.)
System: The UNT Digital Library
Containment of Fragments from a Runaway Reactor (open access)

Containment of Fragments from a Runaway Reactor

Introduction: This report covers a year's activity in the continuation of a program designed to explore the missile hazard resulting from a reactor excursion.
Date: December 2, 1963
Creator: Botsford, N. B.; Keough, D. D. & White, R. W.
System: The UNT Digital Library
[Delta]I = 1/2 Rule for Non-Leptonic Strangeness-Changing Decay Processes (open access)

[Delta]I = 1/2 Rule for Non-Leptonic Strangeness-Changing Decay Processes

Gell-Mann and Pais were the first to suggest that the non-leptonic decay processes of strange particles may be subject to an isospin selection rule, allowing only those decay transitions which involve a change [delta]I = 1/2 in to total isopin of the system. At present, however, there is really no theoretical framework for the description of weak interactions into which this selection rule fits in a natural and compelling way. The report includes sections on the 91) decay processes of the [caret] hyperon, (2) decay processes, (3) [complex conjugate] decay processes, and (6) K[pi]3 decay processes. We have considered the evidence on all of the known non-leeptonic non-radiative decay modes of strange particles. All of this evidence is in good qualitative accord with the [delta]I = 1/2 selection rule.
Date: December 2, 1963
Creator: Dalitz, R. H. (Richard Henry), 1925-2006.
System: The UNT Digital Library
Two-Phase Pressure Losses Quarterly Progress Report: Seventh Quarter, August 12, 1963 - November 11, 1963 (open access)

Two-Phase Pressure Losses Quarterly Progress Report: Seventh Quarter, August 12, 1963 - November 11, 1963

Technical report describing that the pressure drop along an annular channel with dimensions D(1) = 0.375 inch; D(2) = 0.875 inch, L = 70 inches. Flow was vertical and upward, and only the internal surface was heated. Subcooled conditions existed at the inlet, with two-phase conditions at the exit. Groups of three radial spacer pins on 18-inch centers along the channel, held the inner surface concentric with the outer surface. The single phase loss coefficient for each spacer group is K(8) = 0.21. The single phase friction factor for the annual channel is given by f = 0.16 N(R)(-0.16). The two phase pressure drop increases as the quality increases for G [over] 10(6) = 0.5 ;b/hr ft(2). The effect of heat flux on the pressure drop is very is very slight over the range of fluxes tested (0.55 less than or equal to Q over 10(6).\ less than or equal to 0.8). The two-phase pressure drop gradient in the same annulus, with no heat addition is qualitatively the same as for a 1/4-inch by 1-3/4 inches rectangular channel but is quantitatively greater than for the rectangular channel.
Date: December 2, 1963
Creator: Janssen, E. (Engineer) & Kervinen, J. A.
System: The UNT Digital Library
A Rapid Beam Deflector for the Brookhaven AGS (open access)

A Rapid Beam Deflector for the Brookhaven AGS

An air cored pulse deflection coil has been constructed for the Brookhaven AGS. The system produces a deflecting pulse with a peak radial deflection of 2.5 cms and duration of 70 microseconds. Beam spill duration of 15 to 50 microseconds from the target is readily achieved. One deflector has given satisfactory service for over a year and a second unit has been installed this summer.
Date: October 2, 1962
Creator: Brown, H. N.; Culwick, B. B. & Forsyth, E. B.
System: The UNT Digital Library
The Hydrolysis of the Rare-Earth Carbides (open access)

The Hydrolysis of the Rare-Earth Carbides

From introductory paragraph: "This report concerns the hydrolysis of rare-earth dicarbides, sesquicarbides, solid solutions of carbon in rare-earth metals as well as rare-earth carbon alloys of varying compositions. Many of the carbide samples used in this study were those which had been studied by Gschneider (9)(7) and had been preserved in evacuated, sealed tubes. Some additional preparations of the sesquicarbides were made especially for these studies. The hydrolytic reactions were carried out in water and hydrochloric acid solutions of varying concentrations. Assay of the gaseous products was by mass spectrometry and gas chromatography. Both instruments were carefully calibrated with pure hydrocarbons and hydrogen and mixture thereof."
Date: July 2, 1962
Creator: Svec, Harry J. (Harry John), 1918-; Capellen, Jennings & Saalfeld, Fred E.
System: The UNT Digital Library
The Half-Life and Gamma Ray Abundance of Cs-137 (open access)

The Half-Life and Gamma Ray Abundance of Cs-137

The nuclide Cs-137 is a fission product commonly used for measurement of uranium burnup in irradiated uranium fuel by the fission product to uranium ratio method. In the application of this method, the largest single error introduced in the measurement of burnup is the uncertainty in the half-life of Cs-137. Because of the uncertainty in this value and its importance in nuclear fuel burnup analysis, a reinvestigation was undertaken to obtain a more accurate value using the mass spectrometric method.
Date: June 2, 1962
Creator: Rider, B. F.; Peterson, J. P. & Ruiz, C. P.
System: The UNT Digital Library
Radiation Patterns in the Lower Ionosphere and Fresnel Zones for Elevated Antennas Over a Spherical Earth (open access)

Radiation Patterns in the Lower Ionosphere and Fresnel Zones for Elevated Antennas Over a Spherical Earth

From Introduction: "The purpose of this work is to give the results of a detailed computation of antenna patterns in the ionosphere at VHF over a spherical earth."
Date: April 2, 1962
Creator: Merrill, R. G. & Mansfield, W. V.
System: The UNT Digital Library
Simple High-Voltage Trapezoidal Pulse Generator (open access)

Simple High-Voltage Trapezoidal Pulse Generator

From abstract: "A description is given of a simple circuit used to produce negative voltage pulses up to 60 kilovolts with a portion rising with constant slope up to 10 kilovolts per microsecond."
Date: April 2, 1962
Creator: Gonella, Luigi
System: The UNT Digital Library
Strontium-90 Fueled Thermoelectric Generator Power Source for Five-Watt U.S. Coast Guard Light Buoy: Final Report (open access)

Strontium-90 Fueled Thermoelectric Generator Power Source for Five-Watt U.S. Coast Guard Light Buoy: Final Report

From summary: This report describes the 10-watt Sr-90 thermoelectric generator, the dc-to-dc converter, batteries and the method of installation in the light buoy.
Date: February 2, 1962
Creator: unknown
System: The UNT Digital Library
Determination of Diffusion Cooling in Graphite by Measurement of the Average Neutron Velocity (open access)

Determination of Diffusion Cooling in Graphite by Measurement of the Average Neutron Velocity

From Abstract: "The diffusion cooling coefficient in graphite has been determined by measuring the change in the asymptotic average velocity with buckling, by pulsed neutron methods. The times necessary to establish equilibrium spectra in graphite and heavy water have been measured and are reported."
Date: January 2, 1962
Creator: Starr, E. & De Villiers, J. W. L. (Jacobus Wynand Louw)
System: The UNT Digital Library
High Performance UO2 Program Third Quarterly Progress Report: October-December 1961 (open access)

High Performance UO2 Program Third Quarterly Progress Report: October-December 1961

The primary purpose of this joint USAEC-Euratom program is to obtain a better understanding of the maximum achievable operating characteristics of UO2 as a reactor fuel. During the program work will be performed in two areas that have been of concern to reactor core designers for a long time, namely, fission gas release and central melting in fuel rods.
Date: January 2, 1962
Creator: Weidenbaum, B.
System: The UNT Digital Library
Tables of Spectral-Line Intensities: Part 2, Arranged by Wavelengths (open access)

Tables of Spectral-Line Intensities: Part 2, Arranged by Wavelengths

From Abstract: "Comparisons with other intensity measurements in individual spectra indicate that the National Bureau of Standards spectral-line intensities may have average errors of 20 percent, but first of all they provide uniform quantitative values for the seventy chemical elements commonly determined by spectrochemists. These data are presented by element in part I, and all 39,000 observed lines are given in order of wavelength in part II."
Date: October 2, 1961
Creator: Meggers, William F.; Corliss, Charles H. & Scribner, Bourdon F.
System: The UNT Digital Library
Engineering Testing of the F-48 Columbium Alloy (open access)

Engineering Testing of the F-48 Columbium Alloy

The F-48 columbium base alloy maintains useful mechanical properties for structural application up to 2600 degree F. Short-time tensile and creep rupture strengths have been determined for four F-48 plates, each from a different heat and with a different work history. Flow testing in a high-temperature, high-pressure air stream has been conducted to study oxidation behavior of the bare meatal. Auto-ignition is found to occur at a stream temperature of 2600 degree F. The phenomenon appears to be temperature dependent only. Development of an oxidation protection coating, utilizing environmental flow test apparatus, is proceeding.
Date: August 2, 1961
Creator: Cox, John W. & Werner, Richard W.
System: The UNT Digital Library
Development and Testing of Low Cost Fuel Elements for Power Reactor Service (open access)

Development and Testing of Low Cost Fuel Elements for Power Reactor Service

The development of swaging and vibratory compaction process for fabrication of clad UO2 fuel rods is described. The cost is less than 50% of that for an equivalent core fabricated from pellets. The irradiation testing of vibratory filled and swaged UO2 rods is reported for burn-ups from 2,000 to 12,000 Mwd/t UO2; the results indicate that the rods are capable of excellent performance power reactors.
Date: June 2, 1961
Creator: Babcock & Wilcox Company
System: The UNT Digital Library
Local Fields With Terminating Expansions (x) (open access)

Local Fields With Terminating Expansions (x)

"The quantum theory problem of constructing explicitly a local Lorentz invariant model field theory which has an asymptotic particle interpretation and gives rise to an S matrix different from unity is discussed. It is proved that if a local covariant field H(x) has a complete current, the S matrix associated with this field is identically equal to unity. Results show that in order to get an interaction, the current is not allowed to have a terminating expansion in terms of a free field. The absence of a finite connection between a free field and an interacting field tended to confirm the belief that in local quantum field theories with particle interpretation the requirement of the existence of scattering forces in the physical states are such that it is not pos sible to identify them with a linear space spanned by ""free'' particle states."
Date: June 2, 1961
Creator: Bardakci, K. & Sudarshan, E C.G.
System: The UNT Digital Library
Mid-Year Summary Report October 1, 1960-March 31, 1961 Army Pwr Support and Development Program (open access)

Mid-Year Summary Report October 1, 1960-March 31, 1961 Army Pwr Support and Development Program

Abstract: A cyclic stress analysis of the SM-1 primary system was carried out. Problems encountered in the fabrication of PM-2A Core II and SM-lA Core II are described, and the results of an examination of damaged SM-lA Core I stationary fuel elements reported. A preliminary study of the radiation damage to SM-1 reactor vessel was made and the possibility of annealing the vessel discussed. Performance analyses are presented for five cores: SM-1 Core, SM-1 Core 1 rearranged and spiked, SM-1 Core II with special components, PM-2A Core 1, and SM- 1A Core 1. Preliminary critical experiments were made with SM-2 elements in a SM- 1 core configuration and nuclear and thermal analyses of the use of SM-2 elements in SM-1, SM-1A, and PM-2A completed. A throttling steam calorimeter was selected for measuring moisture carry-over on the PM-2A steam generator. Test procedures for evaluating the shielding of the SM-1, SM-lA, and PM-2A plants are summarized. Radiochemical and chemical analyses of SM-1 coolant and crud are summarized, and methods of activity control discussed. Preliminary results of studies of the properties of reactor pressure vessels under irradiation and no irradiation conditions are summarized briefly.
Date: June 2, 1961
Creator: Hoover, H. L.
System: The UNT Digital Library
A Systematic Study of (p,xp) Reactions in the 100-400 MEV Region (open access)

A Systematic Study of (p,xp) Reactions in the 100-400 MEV Region

(p,xp) reactions are those nuclear reactions induced by high energy protons in which both the mans and the charge of the target nucleus are reduced by x-1 units. The most common type of these reactions to be expected in the 100 to 400 Mev region involves the exclusive emission of protons as a results of the interactions. The specific (p,xp) reactions investigated in this study were those where 2 is less than or equal to x where x is less than or equal to 5.
Date: June 2, 1961
Creator: Morrison, David Lee
System: The UNT Digital Library
Description of Method for Determining Geometric Parameters of Surfaces in Contact (open access)

Description of Method for Determining Geometric Parameters of Surfaces in Contact

"A method and equipment are described for determining the surface parameters of contact required for heat transfer calculations. In this method, the output of a surface analyzer for one surface is recorded on one channel of magnetic tape and the output for the other surface of the contact pair on a second channel. The tape is played back to an analog computer which then integrates the analog voltage to compute the void volume thickness, the number of contact points, and the ratio of metallic contact area to the total area."
Date: May 2, 1961
Creator: unknown
System: The UNT Digital Library
Hamiltonian Dynamics of Relativistic Particles (open access)

Hamiltonian Dynamics of Relativistic Particles

"The canonical (hamiltonlan) formulation of a relativistic dynamical theory is outlined, and the existence and explicit construction of general hamiltonian theories of relativiatic interacting particles are discussed. These hamiltonian theories are shown to contain certain elements of arbitrariness which are eliminated in manifestly coveriant formulations."
Date: March 2, 1961
Creator: Sudarshan, E.C.G.
System: The UNT Digital Library
Improved Zirconium Alloys Quarterly Report: October - December 1960 (open access)

Improved Zirconium Alloys Quarterly Report: October - December 1960

Quarterly report describing the progress and development of improved zirconium alloys for service in superheated water and steam. This report covers the period between October 1 to December 31, 1960 and was conducted by the United States and the European Atomic Energy Community (EURATOM).
Date: February 2, 1961
Creator: Weinstein, Daniel; Holtz, F. C. & Van Thyne, R. J.
System: The UNT Digital Library
Kinematics And Dispersion Relations For General Production Processes (open access)

Kinematics And Dispersion Relations For General Production Processes

The method of dispersion relations has in recent years found a wide application for the study of elementary particle reactions. Most of the work, however, deals with reactions of the type [formula], while the theory of those with more than two particles in the final state is still in a very preliminary stage. One reason for this is that even with only three particles in the final state the theory is already much more complicated. Nevertheless, a further development of the theory seemed to us very desirable. The theory at present is being developed on various levels simultaneously. Generally speaking, the aim of this paper is to put the theory in a form as closely as possible analogous to Mandelstam's formulation of the theory of reactions of type [formula]. In the later sections we specialize on reactions [formula], but as much as possible the formulation is in more general terms.
Date: February 2, 1961
Creator: Kretzschmar, Martin
System: The UNT Digital Library