Serial/Series Title
Fiscal Year 2007
4
Winter Fuels Report
4
Fiscal Year 2005
2
Proceedings of RIKEN BNL Research Center Workshop
2
Carbon Sequestration on Surface Mine Lands Quarterly Report
1
Development of Novel Electrocatalysts for Proton Exchange Membrane Fuel Cells Annual Report
1
Elastic-Wavefield Seismic Stratigraphy: A New Seismic Imaging Technology Progress Report
1
Fiscal Year 1976
1
Fiscal Year 1994
1
Fiscal Year 1998
1
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Update of plasma parameters for a mirror FERF
Based on our current understanding of plasma behavior in mirror reactors, we have recalculated plasma parameters for a fusion engineering research facility (FERF) which uses a magnetic mirror. The most significant changes from results previously reported are a higher value of Q (0.51 vs 0.11) and a higher total neutron rate (2.82 x 10/sup 18/ vs 1.2 x 10/sup 18/ s/sup -1/) yielding a maximum neutron flux of 1.25 x 10/sup 14/ cm/sup -2/ at the wall. The required beam current is approximately 550 A, slightly greater than the 500 A previously estimated.
Date:
January 6, 1977
Creator:
Devoto, R. S.
Object Type:
Report
System:
The UNT Digital Library
Estimates of DWPF canister production
Specification 1.2 of the repository program's Waste Acceptance Preliminary Specifications requires that the DWPF estimate the radionuclide inventory, and provide the error of the estimate, for each waste type (assumed to be each sludge batch). The inventory of any radionuclide is directly proportional to the number of canisters produced from that sludge batch. Thus, estimating the number of canisters to be produced from each sludge batch is an important part of complying with this specification. In this report, the number of canisters to be produced from each batch of sludge is estimated. This leads to the conclusion that approximately 5200 canisters will be produced by the DWPF through the year 2010. Thereafter, it is conservatively estimated that up to 124 canisters will be produced each year. The errors in these estimates are also discussed.
Date:
December 6, 1991
Creator:
Plodinec, M. J.
Object Type:
Report
System:
The UNT Digital Library
Device for measuring the ion angular distribution of 2XIIB plasma
A device that measures charge-exchange flux to determine the angular distribution of the 2XIIB plasma is described. Charge-exchange products heat circular nickel foils (placed at 15/sup 0/ intervals in theta and at constant radius on an arc parallel to the z-axis) and the voltage drop across the foils (produced by constant-current sources) provides a measure of the changes in resistivity. The charge-exchange flux at each foil is proportional to the plasma distribution at that angle. Use of this technique is limited by the resistivity and heat resistance of the circular nickel foils, but could conceivably be extended to other shapes and materials. The Hall-Simonen and ''time-average'' measurement of angular distribution are compared and the characteristic times of loss (gain) are calculated from theory. The g(..mu..) detector may be used to experimentally verify these times of loss (gain) and also to analyze plasma pressure stability. Current microwave measurements show that plasma has an exponential density dependence in z and assumes a flux tube rather than a p(B) density dependence. A distinct angular distribution (determinable by the detector) is associated with each of these dependencies. The codes to simulate injection and resulting angular distribution, charge-exchange capture, and heating and signal of the …
Date:
April 6, 1977
Creator:
Smith, B.
Object Type:
Report
System:
The UNT Digital Library
Microseismic monitoring of the Chaveroo oil field, New Mexico
Microseismicity was monitored in the Chaveroo oil field in southeastern New Mexico during, and for 5 weeks following, a pressurized stimulation of a well being prepared as an injector for a water flood operation. Three-thousand barrels of water were injected into the reservoir over a 5.5-hour period. Little seismicity was detected during the stimulation. Intermittent monitoring over a 5-week period following the injection indicated detectable seismicity occurring with activity levels varying in time. The most active period recorded occurred just after production resumed in the immediate area of the monitor well. Mapping the microearthquakes using the hodogram technique indicates the events occur along linear trends which corroborate known structural trends of the field. Seismicity trends were defined both parallel and perpendicular to the regionally defined maximum horizontal stress direction. Seventy-three good quality events were recorded, in a cumulative 24 hour period, from which structures were mapped up to 3000 ft from the monitor well. 13 refs., 9 figs.
Date:
February 6, 1990
Creator:
Rutledge, J. T. & Albright, J. N.
Object Type:
Article
System:
The UNT Digital Library
GEODOC: the GRID document file, record structure and data element description
The purpose of this report is to describe the information structure of the GEODOC file. GEODOC is a computer based file which contains the descriptive cataloging and indexing information for all documents processed by the National Geothermal Information Resource Group. This file (along with other GRID files) is managed by DBMS, the Berkeley Data Base Management System. Input for the system is prepared using the IRATE Text Editing System with its extended (12 bit) character set, or punched cards.
Date:
November 6, 1975
Creator:
Trippe, T.; White, V.; Henderson, F. & Phillips, S.
Object Type:
Report
System:
The UNT Digital Library
Plutonium metal burning facility
A glove-box facility was designed to convert plutonium skull metal or unburned oxide to an oxide acceptable for plutonium recovery and purification. A discussion of the operation, safety aspects, and electrical schematics are included.
Date:
May 6, 1977
Creator:
Hausburg, D. E. & Leebl, R. G.
Object Type:
Report
System:
The UNT Digital Library
National Waste Terminal Storage Program information meeting, December 7-8, 1976. [Slides only, no text]
Volume II of the report comprises copies of the slides from the talks presented at the second session of the National Waste Terminal Storage Program information meeting. This session was devoted to geologic studies. (LK)
Date:
December 6, 1976
Creator:
unknown
Object Type:
Article
System:
The UNT Digital Library
Spall study in one dimension
A SOC one-dimensional calculation of an underground nuclear test is presented to exemplify the shock propagation and spall phenomenology commonly predicted. Then to examine the effects of spherical divergence on spall, a series of SOC calculations, at different radii of curvature, are conducted and prediction of depth and velocity for the first spall zone are compared with predictions from simple analytic theory. The excellent agreement in this comparison verifies that the SOC code accurately represents the physics of spalling. This study also indicates that the total spall depth is independent of divergence because of the compensating effect that subsequent convergence has on the reflected wave. The latter result implies that the total depth of spall calculated for each underground nuclear tests must be critically examined and evaluated. Finally, SOC calculations for nuclear detonations in tuff and granite are performed to demonstrate the significant effect that variations in material response under shock loading have on shock propagation and spall.
Date:
April 6, 1976
Creator:
Glenn, H. D.
Object Type:
Report
System:
The UNT Digital Library
Biological Conversion of Synthesis Gas. [Chlorobium Thiosulfatophilum, Chlorobium Phaeobacteroides, and Rhodospirillum Rubrum]
The anaerobic bacterium Rhodospirillum rubrum has been chosen for catalysis of the biological water gas shift reaction. Two bacteria, Chlorobium thiosulfatophilum and Chlorobium phaeobacteroides, are being evaluated as candidates for H{sub 2}S conversion to elemental sulfur. Since these latter two organisms both grow and convert H{sub 2}S in batch culture using standard basal medium, the choice of a suitable bacterium must be made in consideration of specific growth and uptake rates. Produced elemental sulfur stability against further oxidation to sulfate, and minimal use of H{sub 2} as a producing agent must also be considered. The effects of temperature on the performance of R. rubrum were evaluated. It was found that the cell concentration was highest at temperatures of 25 and 30{degree}C, and that the specific uptake rate was highest at temperatures of 30, 32 and 34{degree}C. No growth was observed at 37{degree}C. Also, temperature did not affect the yield of H{sub 2} from CO. Thus, R. rubrum may be used for biological rates gas shift at any temperature between 30 and 34{degree}C, although growth is maximized at lower temperatures. Preliminary studies with C. thiosulfatophilum showed rapid utilization of H{sub 2}S from the gas and liquid phases with subsequent production of …
Date:
January 6, 1992
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
High-pressure safety at the Lawrence Livermore Laboratory, an energy research facility
The high-pressure safety program at Lawrence Livermore Laboratory, Livermore, California, has been successful in preventing lost-time high-pressure accidents over the past 12 years. Program organization, personnel training and qualification, pressure vessel design criteria and documentation, and pressure testing and inspection are discussed.
Date:
May 6, 1976
Creator:
Burton, W. A.
Object Type:
Report
System:
The UNT Digital Library
Shock compression of pyrolytic, ceylon natural, and a hot-pressed synthetic graphite to 120 GPa
Recent improvements have made the two-stage, light-gas gun at Lawrence Livermore Laboratory into a dependable source of very energetic planar shocks. Also, the inclined-prism technique has proved useful in observing anomalous behavior of materials, especially at low pressure. The availability of these improved techniques presented an opportunity to re-examine the low pressure, shock-compression characteristics for graphite and, in a search for an additional transformation, to extend some of the data to higher pressures.
Date:
June 6, 1977
Creator:
Gust, W. H. & Young, D. A.
Object Type:
Article
System:
The UNT Digital Library
Stable isotope sales: Mound Laboratory customer and shipment summaries, FY 1976 and FY 1976A
A listing is given of Mound Laboratory's sales of stable isotopes of noble gases, carbon, oxygen, nitrogen, chlorine, and sulfur for fiscal years 1976 and 1976A (the period July 1, 1975 through September 30, 1976). Purchasers are listed alphabetically and are divided into domestic and foreign groups. A cross-reference index by location is included for domestic customers. Cross-reference listings by isotope purchased are included for all customers.
Date:
June 6, 1977
Creator:
Ruwe, A. H., Jr.
Object Type:
Report
System:
The UNT Digital Library
Conceptual design of the blanket and power conversion system for a mirror hybrid fusion-fission reactor. 12-month progress report, July 1, 1975--June 30, 1976
This report presents the conceptual design and preliminary feasibility assessment for the hybrid blanket and power conversion system of the Mirror Hybrid Fusion-Fission Reactor. Existing gas-cooled fission reactor technology is directly applicable to the Mirror Hybrid Reactor. There are a number of aspects of the present conceptual design that require further design and analysis effort. The blanket and power conversion system operating parameters have not been optimized. The method of supporting the blanket modules and the interface between these modules and the primary loop helium ducting will require further design work. The means of support and containment of the primary loop components must be studied. Nevertheless, in general, the conceptual design appears quite feasible.
Date:
July 6, 1976
Creator:
Schultz, K. R.; Baxi, C. B. & Rao, R.
Object Type:
Report
System:
The UNT Digital Library
Full-Scale Demonstration Low-NO sub x Cell trademark Burner retrofit
The Low-NO{sub x} Cell{trademark} Burner operates on the principle of staged combustion. The lower burner of each two-nozzle cell is modified to accommodate all the fuel input previously handled by two nozzles. Secondary air, less than theoretically required for complete combustion, is introduced to the lower burner. The remainder of secondary air is directed to the upper port'' of each cell to complete the combustion process. B W/EPRI have thoroughly tested the LNCB{trademark} at two pilot scales (6 million Btu per hour and 100 million Btu per hour), and tested a single full-scale burner in a utility boiler. Combustion tests at two scales have confirmed NO{sub x} reduction with the low-NO{sub x} cell on the order of 50% relative to the standard cell burner at optimum operating conditions. The technology is now ready for full unit, full-scale demonstration.
Date:
April 6, 1992
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Heat exchanger-ingot casting/slicing process. Silicon sheet growth development for the Large Area Silicon Sheet Task of the Low Cost Silicon Solar Array Project. Second quarterly progress report, January 1, 1976--March 31, 1976
The object of this program is to demonstrate that large single-crystal ingots can be economically cast by the Heat Exchanger Method (HEM) and economically sliced into thin sheets with a multi-wafer slicer. An experimental program is described which is designed to demonstrate the potential and isolate the limiting parameters for crystal casting and slicing with the Heat Exchanger Method (HEM) and the multi-wafer slicer. (WDM)
Date:
April 6, 1976
Creator:
Schmid, F.
Object Type:
Report
System:
The UNT Digital Library
Environmental and technological implications of a theta-pinch fusion power plant
The environmental effects of this conceptual design were evaluated and found to be little different from other electrical power plants in most regards. Exceptions include a very small release of tritium, a low-hazard isotope, and relatively large amounts of radioactive material which must be either stored on site for eventual reprocessing or permanently discarded. These radioactive materials are nonvolatile and should not pose a difficult disposal problem, although some of the material may remain radioactive for hundreds of years. Natural resources required to build and operate the reference plant are not excessive except perhaps in the case of niobium and beryllium. The accident, sabotage, etc., problems of the plant are very minimal and although accidents can be postulated which would be inconvenient and costly within the plant, the probability of sizable impact on the surroundings is so as to be incredible.
Date:
May 6, 1974
Creator:
Coultas, T. A.; Burke, R. J. & Krakowski, R. A.
Object Type:
Report
System:
The UNT Digital Library
2XIIB plasma confinement experiments
This paper reports results of 2XIIB neutral-beam injection experiments with plasma-stream stabilization. The plasma stream is provided either by a pulsed plasma generator located on the field lines outside the plasma region or by ionization of neutral gas introduced at the mirror throat. In the latter case, the gas is ionized by the normal particle flux through the magnetic mirror. A method of plasma startup and sustenance in a steady-state magnetic field is reported in which the plasma stream from the pulsed plasma generator serves as the initial target for the neutral beams. After an energetic plasma of sufficient density is established, the plasma generator stream is replaced by the gas-fed stream. Lifetimes of the stabilized plasma increase with plasma temperature in agreement with the plasma stabilization of the drift-cyclotron loss-cone mode. The following plasma parameters are attained using the pulsed plasma generator for stabilization: n approximately 5 x 10/sup 13/ cm/sup -3/, anti W/sub i/ approximately 13 keV, T/sub e/ = 140 eV, and ntau/sub p/ approximately 7 x 10/sup 10/ cm/sup -3/.s. With the gas feed, the mean deuterium ion energy is 9 keV and the peak density n approximately 10/sup 14/ cm/sup -3/. In the latter case, …
Date:
August 6, 1976
Creator:
Coensgen, F. H.; Clauser, J. F. & Correll, D. L.
Object Type:
Article
System:
The UNT Digital Library
Investigation of the shallow depth explosions. [Nuclear explosions]
An investigation of the nuclear explosions at shallow depth is made. A combination of an explosion code and an effects code proves to be an excellent tool for this study. A numerical simulation of ''Johnie Boy'' shows that the energy coupling to the air takes place in two stages; first by a rising mound, and then by a vented source. The thermal effects are examined for a 1 kt source at three depths of burial. The ''mushroom effect'' leaves a hot radiative plasma in the upper level and cold materials in the lower region of the debris. The temperature and the energy density of the debris can give an upper limit on the thermal output.
Date:
May 6, 1976
Creator:
Kamegai, M.
Object Type:
Report
System:
The UNT Digital Library
Cryostabilization of high-temperature superconducting magnets with subcooled flow in microchannels
Subcooled flow of liquid nitrogen in microchannels is proposed as a means to enhance the stability of a superconducting magnet. Analysis shows high current density or a low stabilizer fraction is obtainable in a cryostable magnet. Increase in stability (using the Stekley criterion) is directly related to coolant velocity and coolant channel aspect ratio, however, there is a corresponding increase in pressure drop of the system. Another constraint is the coolant temperature rise, which is found to be a function of coolant residence time and the coolant to conductor ratio.
Date:
July 6, 1992
Creator:
Cha, Y. S.; Hull, J. R. & Choi, U. S.
Object Type:
Article
System:
The UNT Digital Library
Active readout KAP x-ray spectrometer. [Laser-produced plasma diagnostics]
It was found that a new type of solid-state detector known as the self-scanning photodiode array can be used to obtain the active readout of data in wavelength-dispersive x-ray spectrometers. The use of this device to recover x-ray spectral data for glass microspheres heated by Lawrence Livermore Laboratory's CYCLOPS laser is reported. The self-scanning photodiode array is a product of the MOS electronics fabrication technology. It consists of an array of semi-discrete diffused junction photodiodes deployed along a line on a silicon chip. The signals generated in the array of diodes are serially-scanned and multiplexed by a scanning circuit built on the chip. The sensitivity and other aspects of the response of the photodiode arrays to low-energy x-rays has been previously reported. The photodiode array was used in conjunction with a flat KAP single-crystal in a series of spectrometry experiments. Of particular interest has been the analysis of the hydrogen-like and helium-like 1s-2p radiations of silicon in the neighborhood of 2 keV.
Date:
October 6, 1975
Creator:
Koppel, L. N.; Richards, L. M. & Campbell, D. E.
Object Type:
Article
System:
The UNT Digital Library
Direct Conversion of Neutron Energy and Other Advantages of a Large Yield Per Pulse, Inertial-Confinement Fusion Reactor
Aspects of an inertial-confinement, fusion reactor that uses an energy release {approx gt}10{sup 11} joules are discussed. The large energy release makes possible direct conversion of the fusion neutrons' energy after nuclear heating of an evaporated blanket to the plasma state. Surface damage by charged particles is avoided and structural damage by neutrons is alleviated. Complex fuel assemblies and other expandable parts may be used as a result of the high monetary value of the energy release.
Date:
May 6, 1974
Creator:
Burke, R. J. & Cutting, J. C.
Object Type:
Article
System:
The UNT Digital Library
Temporal and spatial fall chinook salmon redd distribution near Hanford, 1967-1976
Annual surveys of fall chinook salmon in the Hanford section (Ringold to Priest Rapids) of the Columbia River have been conducted annually since 1947. Estimates of the relative numbers of fall chinook spawning in this section of the river are obtained through several aerial surveys made each fall. The possible relationships of environmental factors to the size of the local salmon population have been reported for the period 1947 to 1969 (Watson 1970) and each year's survey results are summarized in Battelle Pacific Northwest Laboratory Annual Reports to USERDA (formerly USAEC) Division of Biomedical and Environmental Research. This report was prepared to provide more detailed information than is available in previous reports on the timing of spawning in the principal breeding areas during recent years.
Date:
December 6, 1976
Creator:
Watson, D. G.
Object Type:
Report
System:
The UNT Digital Library
Measured leak rates of the temporary seals in DWPF canistered waste forms after three years of on site storage
In the summer of 1990 a study was carried out to determine the-internal pressure, relative humidity, and chemical composition of the gas within the free volume of four canistered waste forms produced at TNX in May of 1988. Three of these canistered waste forms were sealed only by temporary seals and subsequently stored in the TNX boneyard' with no protection. The fourth canister was sealed by upset resistance welding. All three canisters with temporary seals were decontaminated by aqueous frit blasting. It was important to remeasure the leak rates of these seals to ensure that leaktightness had not deteriorated during canister handling and storage prior to the time the experiment were performed. This paper details the results of two separate measurements of the leak rates of these seals.
Date:
April 6, 1992
Creator:
Harbour, J. R. & Miller, T. J.
Object Type:
Report
System:
The UNT Digital Library
Stability of superheavy elements: rotation and internal excitation limits. [Nuclear, deformation two-center shell model with rotation and internal excitations]
The rotation and internal excitation limits of stability of superheavy compound nuclei (formed, for example, by heavy-ion collisions) are studied. The work is based on a macroscopic-microscopic description of the deformation of a nucleus. The two-center shell model for fission is generalized to include rotation (microscopic description) and internal excitations (statistical description). The physical basis for this study is described and the calculated results of the stability of fission barriers of superheavy elements are presented.
Date:
March 6, 1978
Creator:
Mustafa, M. G.
Object Type:
Article
System:
The UNT Digital Library