Useful characteristics of the Savannah River (open access)

Useful characteristics of the Savannah River

The following information about the Savannah River is tabulated: significant activities and discharges along the Savannah River, river water temperature data near Jackson st Savannah River Plant, flow informatiom, and reservoir parameters for Clarks Hill, Richard B. Russell and Hartwell reservoirs.
Date: May 19, 1982
Creator: Watts, J. R.
Object Type: Report
System: The UNT Digital Library
Design and implementation of a fiber-optic gamma-measurement system (open access)

Design and implementation of a fiber-optic gamma-measurement system

The design and implementation of the downhole portion of a measuring system for gamma rays is presented. Included are three alternative designs for radiation-resistant collimating and condensing lenses, sample cells, turning mirrors, and fiber-optic termination techniques. Also discussed are mechanical mounts and positioners, shielding, alignment, test methods, and field installation. Some general design suggestions for optical systems in adverse environments are also presented.
Date: May 19, 1980
Creator: Reedy, R.P.; Crawford, D.W. & Roeske, F. Jr.
Object Type: Article
System: The UNT Digital Library
Inertial fusion power for space applications (open access)

Inertial fusion power for space applications

More than thirty-seven design concepts have been proposed for terrestrial ICF power plants. The design space is large because of the many allowable driver and reaction chamber combinations. These design studies have illustrated advantages of ICF power plants over other sources in lower impact on the environment, high safety, and almost no dependence on consumables like fuel. The fact that, once built, a 1000 MW/sub e/ ICF power plant would require only 240 kg of deuterium and from 770 to 9260 kg of lithium to run for five years (at 70% capacity factor) makes it potentially attractive for space power also. However, the designs proposed to date have emphasized features that would make the plant attractive for terrestrial applications, where economics, efficiency, and environmental considerations dominate. The resulting plants are large and contain many very heavy components that would not be at attractive for space applications. In this paper, we evaluate alternative ICF driver and reactor technologies using space application criteria and also discuss how some of those technologies can be altered to produce smaller, lighter fusion power sources for space.
Date: May 19, 1986
Creator: Meier, W. R.; Hogan, W. J.; Hoffman, N. J.; Murray, K. A. & Olson, R. E.
Object Type: Article
System: The UNT Digital Library
Thermal-envelop stone house, solar. Final technical report (open access)

Thermal-envelop stone house, solar. Final technical report

The purpose of this project is to create a comfortable, low-cost heating system for a single-family house, without dependence on non-renewable energy sources. I have attempted to combine a simple solar air-heating collector with the thermal envelop concept (for thermal air circulation) and massive interior stone walls for heat storage. All building materials, with the exception of the solar glazing material and certain other solar components, are inexpensive and locally produced. Examples are: rough-cut hardwood lumber, sandstone (free for the gathering), galvanized roofing for absorberplate, concrete, concrete block, and cellulose insulation. The collector has operated with a relatively high degree of efficiency, though three 0.6 amp duct fans had to be installed in order to increase air circulation. The interior stonework has provided more than adequate heat storage, along with even heat radiation throughout cloudy periods. My main problem has been heat loss around the foundation.
Date: May 19, 1982
Creator: Avery, S. C.
Object Type: Report
System: The UNT Digital Library
Quantum mechanical stabilization of Minkowski signature wormholes (open access)

Quantum mechanical stabilization of Minkowski signature wormholes

When one attempts to construct classical wormholes in Minkowski signature Lorentzian spacetimes violations of both the weak energy hypothesis and averaged weak energy hypothesis are encountered. Since the weak energy hypothesis is experimentally known to be violated quantum mechanically, this suggests that a quantum mechanical analysis of Minkowski signature wormholes is in order. In this note I perform a minisuperspace analysis of a simple class of Minkowski signature wormholes. By solving the Wheeler-de Witt equation for pure Einstein gravity on this minisuperspace the quantum mechanical wave function of the wormhole is obtained in closed form. The wormhole is shown to be quantum mechanically stabilized with an average radius of order the Planck length. 8 refs.
Date: May 19, 1989
Creator: Visser, M.
Object Type: Article
System: The UNT Digital Library
Sedimentation plan to assess the impact of geothermal activities to the aquatic ecosystem in the Geyers Calistoga KGRA (open access)

Sedimentation plan to assess the impact of geothermal activities to the aquatic ecosystem in the Geyers Calistoga KGRA

The prevention of sedimentation or siltation in aquatic ecosystems is always a key environmental issue in the development and operation of power plant units. This report describes a field program which will assess the amount of sedimentation in the streams and tributaties of the Geysers-Calistoga Known Geothermal Resource Area (KGRA) due to development-related or other site-specific activities. This sediment plan is one part of a four part venture - the others are water quality, benthic invertebrates and fisheries studies - initiated by the California Energy Commission and involving numerous California organizations. Included in this report are the cost breakdowns for each phase, maps and rationale of the sampling sites, the methodology for the laboratory sample processing, and examples of the type of graphic and tabular output expected.
Date: May 19, 1981
Creator: Ireland, R.R.
Object Type: Report
System: The UNT Digital Library
Wave heating models for ion-cyclotron heating in EBT-S (open access)

Wave heating models for ion-cyclotron heating in EBT-S

Wave heating of ELMO BUMPY TORUS-SCALE (EBT-S) in the ion-cyclotron range of frequencies will be strongly influenced by the geometry of the plasma. In particular, the short finite length of the mirror sections means that the electron bounce frequency is of comparable magnitude to the ion-cyclotron frequency. Consequently, the bouncing motion of trapped particles impacts the electron absorption of wave energy. Furthermore, the varying magnetic field strength along magnetic field lines influences the ion-cyclotron absorption of waves because the ion-cyclotron resonance conditions are satisfied only at discrete points along the field lines. Expressions are given for trapped and passing electron absorption as well as ion-cyclotron absorption. A numerical example is also discussed.
Date: May 19, 1980
Creator: Sperling, J. L.
Object Type: Report
System: The UNT Digital Library
A Device for Precision Dimensional Measurement of Superconducting Cable (open access)

A Device for Precision Dimensional Measurement of Superconducting Cable

A need for continuous sampling of the dimensions of superconducting cable has lead to the development of a machine for that purpose. This device measures average thickness, width, and keystone angle for a wide variety of cable sizes while under the mechanical loading anticipated in the final coil structure. Linear dimensions can be measured to {plus minus}0.0001 in. and angle to {plus minus}0. 01{degree}. Cable can be measured with and without insulation. Loading is variable up to 25 ksi. This device has applications in epoxy free coil winding where the cable dimensions must be well understood before coil winding in order to predict the size of the finished coil package. As a diagnostic device, it has application in the cable making process to help understand causes for subtle inconsistencies in cable dimensions. A possible quality control application exists. Current cable quality control requires destructive techniques with very small samplings, usually two samples for 5000 ft of cable. We have evaluated device performance by repeated measurements of lengths of SSC cable. 7 figs.
Date: May 19, 1986
Creator: Carson, J. A.; Barczak, E.; Bossert, R.; Fisk, E.; Mantsch, P.; Riley, R. et al.
Object Type: Report
System: The UNT Digital Library
Estimate of the Pbar Yields for the CERN ACOL Project (open access)

Estimate of the Pbar Yields for the CERN ACOL Project

For a check of the yield estimates expected for the new ACOL target station, calculations have been performed for the CERN parameters using the relatively, simple semi-analytical techniques outlined in pbar note 449. These calculations correspond to operation with a 15 cm long, 1 cm radius lithium lens at 750 T/m gradient, and a 6.5 cm tungsten production target. Comparison with the current calculated yield number for the AA with the present target station configuration (10**7 pbars per 10**13 protons, into dp/p = 1.5%) indicates an increase of a factor of 15 using the normal ACOL parameters (dp/p = 6%, a(transverse acceptance) = 240 pi mm-mrad). As explained in the report, the above lens parameters are not optimized, that is, increases in lens gradient and/or radius will result in an increase in yield, providing the corresponding changes in focal distance, beam line matching, etc. are made.
Date: May 19, 1986
Creator: Dugan, G.
Object Type: Report
System: The UNT Digital Library
The development of a generic ecosystem model for assessing the effects of elevated carbon dioxide on ecosystems. Progress report, September 1, 1986--May 18, 1987 (open access)

The development of a generic ecosystem model for assessing the effects of elevated carbon dioxide on ecosystems. Progress report, September 1, 1986--May 18, 1987

This report consists of three major sections which are: progress made on the development of a generic plant growth model, progress made on the holistic ecosystem model, and a summary outlining future directions of our modeling efforts. The major accomplishments of the plant growth modeling have been the identification and implementation of components for the photosynthesis module, development of a plant canopy module, and further refinement of the various modules that make up the basic structure for a generic plant growth mode. Research examined several implementations of a leaf-based, CO{sub 2} responsive, photosynthesis model that incorporates information at the enzyme-kinetics level. Also presented, are several models of forest canopies, transpiration, and photosynthesis.
Date: May 19, 1987
Creator: Reynolds, J. F.; Skiles, J. W. & Dougherty, R. L.
Object Type: Report
System: The UNT Digital Library
Rapid heating tensile tests of hydrogen-charged high-energy-rate-forged 316L stainless steel (open access)

Rapid heating tensile tests of hydrogen-charged high-energy-rate-forged 316L stainless steel

316L stainless steel is a candidate material for construction of equipment that will be exposed to tritium. Proper design of the equipment will require an understanding of how tritium and its decay product helium affect mechanical properties. This memorandum describes results of rapid heating tensile testing of hydrogen-charged specimens of high-energy-rate-forged (HERF) 316L stainless steel. These results provide a data base for comparison with uncharged and tritium-charged-and-aged specimens to distinguish the effects of hydrogen and helium. Details of the experimental equipment and procedures and results for uncharged specimens were reported previously. 3 refs., 10 figs.
Date: May 19, 1989
Creator: Mosley, W. C.
Object Type: Report
System: The UNT Digital Library
Program plan for TNX Area groundwater characterization wells (open access)

Program plan for TNX Area groundwater characterization wells

The TNX Area post-Cretaceous hydrogeological section consists of an unconfined aquifer in recent to Pliestocene age sediments and a confined aquifer in tertiary aged sediments. The unconfined aquifer is a local water bearing reservoir and will not be correlated to a specific stratigraphic unit at this time. Depth to the water table ranges from 25 feet at the New TNX Seepage Basin to 50 feet at the Old TNX Seepage Basin. The unconfined aquifer is 45--50 feet thick and outcrops in the swamp to the west of TNX. The hydraulic gradient in the unconfined aquifer decreases westerly across the TNX Area from 0.05 to 0.01. The unconfined aquifer is separated from the underlying confined aquifer by a sandy slit aquitard (A1) which is approximately 5--10 feet thick. Researchers reported an increase in hydraulic head across this unit of approximately 8 feet which results in an upward gradient between the unconfined and confined aquifer. The confined Tertiary aquifer (C1) at TNX is 25--30 feet thick and can generally be found 60 to 90 feet below the surface. The C1 aquifer is part of the aquifer commonly referred to as the Congaree'' which occurs in the Congaree Formation. The C1 aquifer lies …
Date: May 19, 1989
Creator: Nichols, R. L.
Object Type: Report
System: The UNT Digital Library
Nova control system: goals, architecture, and system design (open access)

Nova control system: goals, architecture, and system design

The control system for the Nova laser must operate reliably in a harsh pulse power environment and satisfy requirements of technical functionality, flexibility, maintainability and operability. It is composed of four fundamental subsystems: Power Conditioning, Alignment, Laser Diagnostics, and Target Diagnostics, together with a fifth, unifying subsystem called Central Controls. The system architecture utilizes a collection of distributed microcomputers, minicomputers, and components interconnected through high speed fiber optic communications systems. The design objectives, development strategy and architecture of the overall control system and each of its four fundamental subsystems are discussed. Specific hardware and software developments in several areas are also covered.
Date: May 19, 1982
Creator: Suski, G. J.; Duffy, J. M.; Gritton, D. G.; Holloway, F. W.; Krammen, J. R.; Ozarski, R. G. et al.
Object Type: Article
System: The UNT Digital Library
Direct catalytic conversion of methane and light hydrocarbon gases. Quarterly report No. 10, January 1--March 31, 1989 (open access)

Direct catalytic conversion of methane and light hydrocarbon gases. Quarterly report No. 10, January 1--March 31, 1989

The goal of this research is to develop catalysts that directly convert methane and light hydrocarbons to intermediates that later can be converted to either liquid fuels or value-added chemicals, as economics dictate. In this reporting period, we have utilized samples of magnesia differing in their pretreatment temperature. Both the hydrido-ruthenium complex H{sub 4}Ru{sub 4}(CO){sub 12} and its reaction product with triethyl aluminum were reacted with these samples. The two ruthenium clusters are expected to react with the magnesia surface in different ways: by deprotonation of the hydride through an acid-base reaction with the basic surface, or by hydrolysis of the aluminum-carbon bond of the triethyl aluminum adduct. The concentration of hydroxyl groups on the magnesia surface able to hydrolyze the aluminum-carbon bond for immobilation should vary depending on the temperature of the pretreatment; the concentration of basic sites which can deprotonate the cluster should also vary with temperature. These differences were borne out by the experiment. We also compared the activity of two batches of AlRu{sub 4}/MgO which had been synthesized at different times in the project. Both batches had approximately the same activity, but the newer batch had greater selectivity for C{sub 6+} hydrocarbons.
Date: May 19, 1989
Creator: Wilson, R. B., Jr.; Posin, B. M. & Chan, Yee Wai
Object Type: Report
System: The UNT Digital Library