Search Results

open access

High conversion of coal to transportation fuels for the future with low HC gas production. Progress report Number 10, January 1--March 31, 1995

Description: An objective of the Department of Energy in funding research in coal liquefaction, is to produce a synthetic crude from coal at a cost lower than $30.00 per barrel (Task A). A second objective is to produce a fuel which is low in aromatics, yet of sufficiently high octane number for use in the gasoline-burning transportation vehicles of today. To meet this second objective, research was proposed for conversion of the highly-aromatic liquid product from coal conversion to a product high in isopa… more
Date: April 1, 1995
Creator: Wiser, W.H. & Oblad, A.G.
Partner: UNT Libraries Government Documents Department
open access

Surveying the monument system at Lawrence Berkeley Laboratory`s Advanced Light Source accelerator

Description: Particle accelerators with demanding alignment requirements face a need for periodic re-surveying of their reference monument systems. At the ALS, significant foundation settling and the necessary relocation of some floor monuments mean that the entire system of over 100 monuments must be re-surveyed to an accuracy of 100 microns at two year intervals. Last Fall, the monument survey was conducted entirely by the in-house Survey and Alignment crew using a simplified instrument mounting system an… more
Date: April 1, 1995
Creator: Thur, W. & Lauritzen, T.
Partner: UNT Libraries Government Documents Department
open access

A space crystal diffraction telescope for the energy range of nuclear transitions

Description: This paper contains literature from American Power Conference Air Toxics Being Measured Accurately, Controlled Effectively NO{sub x} and SO{sub 2} Emissions Reduced; Surface Condensers Improve Heat Rate; Usable Fuel from Municipal Solid Waste; Cofiring Technology Reduces Gas Turbine Emissions; Trainable, Rugged Microsensor Identifies of Gases; High-Tc Superconductors Fabricated; High-Temperature Superconducting Current Leads; Vitrification of Low-Level Radioactive and Mixed Wastes; Characteriza… more
Date: April 1, 1995
Creator: von Ballmoos, P.; Naya, J.E.; Albernhe, F.; Vedrenne, G.; Smither, R.K.; Faiz, M. et al.
Partner: UNT Libraries Government Documents Department
open access

Growth of highly doped p-type ZnTe films by pulsed laser ablation in molecular nitrogen

Description: Highly p-doped ZnTe films have been grown on semi-insulating GaAs (001) substrates by pulsed-laser ablation (PLA) of a stoichiometric ZnTe target in a high-purity N{sub 2} ambient without the use of any assisting (DC or AC) plasma source. Free hole concentrations in the mid-10{sup 19} cm{sup {minus}3} to > 10{sup 20} cm{sup {minus}3} range were obtained for a range of nitrogen pressures The maximum hole concentration equals the highest hole doping reported to date for any wide band gap II-VI co… more
Date: April 1, 1995
Creator: Lowndes, D. H.; Rouleau, C. M.; Budai, J. D.; Poker, D. B.; Geohegan, D. B.; Zhu, Shen et al.
Partner: UNT Libraries Government Documents Department
open access

A comparison of the shielding performances of the AT-400A, Model FL and Model AL-R8 containers

Description: A comparison of the neutron and photon dose rates at different locations on the outside surface of the Model AL-RB, Model FL and the AT-400A containers for a given pit load has been done in order to understand the shielding characteristics of these containers. The Model AL-R8 is not certified for transport and is only used for storage of pits, while the Model FL is a certified Type B pit transportation container. The AT-400A is being developed as a type B pit storage and transportation containe… more
Date: April 28, 1995
Creator: Hansen, L. F.
Partner: UNT Libraries Government Documents Department
open access

Ultra wide band radar holographic imaging of buried waste at DOE sites

Description: Ultra wideband linear array holography is a unique real-time imaging technique for in-situ inspection of buried waste at various DOE sites. The array can be mounted on various platforms such as crane booms, pickup trucks, ATVs, and scanned generating ``3-D`` subsurface images in real time. Inspection speeds are 0.5 to 2 meters/sec, if the image is viewed in real time, greater for off-line processing. The Ground Penetrating Holographic (GPH) system developed for inspection of DOE sites employs t… more
Date: April 1, 1995
Creator: Collins, H. D.; Gribble, R. P.; Hall, T. E. & Lechelt, W. M.
Partner: UNT Libraries Government Documents Department
open access

Electric and Hybrid Vehicles Program 18th annual report to Congress for Fiscal Year 1994

Description: The Department remains focused on the technologies that are critical to making electric and hybrid vehicles commercially viable and competitive with current production gasoline-fueled vehicles in performance, reliability, and affordability. During Fiscal Year 1994, significant progress was made toward fulfilling the intent of Congress. The Department and the United States Advanced Battery Consortium (a partnership of the three major domestic automobile manufacturers) continued to work together … more
Date: April 1, 1995
Partner: UNT Libraries Government Documents Department
open access

A high charge state heavy ion beam source for HIF

Description: A high current low emittance high charge state heavy ion beam source is being developed. This is designed to deliver HIF (heavy ion fusion) driver accelerator scale beam. Using high-charge-state beam in a driver accelerator for HIF may increase the acceleration efficiency, leading to a reduction in the driver accelerator size and cost. The proposed source system which consists of the gas beam electron stripper followed by a high charge state beam separator, can be added to existing single charg… more
Date: April 1, 1995
Creator: Eylon, S. & Henestroza, E.
Partner: UNT Libraries Government Documents Department
open access

Laboratory studies of a hydrothermal pretreatment process for municipal solid waste

Description: The objective of this work was to establish operating conditions for a hydrothermal pre-processing scheme for municipal solid wastes that produce a good slurry product for conversion in a Texaco gasifier. Work was carried out with model components such as wood, paper, and paper/plastic mixtures.
Date: April 6, 1995
Creator: Wallman, H.
Partner: UNT Libraries Government Documents Department
open access

Rapid growth of diamond-like-carbon films by copper vapor laser ablation

Description: Visible light from a copper vapor laser (CVL) operating with 510 and 578 nm radiation (intensity ratio approximately 2:1), an average power of 100 W, a pulse duration of 50 ns, and a repetition frequency of 4.4 kHz has been shown to produce high quality diamond-like-carbon (DLC) films at fluences between 2x10{sup 8} and 5x10{sup 10} W/cm{sup 2}. Maximum deposition rates of 2000 {mu}m{center_dot}cm{sup 2}/h were obtained at 5x10{sup 8} W/cm{sup 2}. DLC films with hardness values of approximately… more
Date: April 1, 1995
Creator: McLean, W.; Warner, B. E. & Havstad, M. A.
Partner: UNT Libraries Government Documents Department
open access

Interdisciplinary study of reservoir compartments. Quarterly technical progress report, January 1, 1995--March 31, 1995

Description: This program was established to document the integrated team approach for solving reservoir engineering problems. Investigations were carried out in the areas of structural mapping of geologic faults, and petrophysical parameters coupled with the geologic fault interpretations and production data to interpret the sealing of the faults.
Date: April 27, 1995
Creator: Van Kirk, C.W.
Partner: UNT Libraries Government Documents Department
open access

Asynchronous global optimization techniques for medium and large inversion problems

Description: We discuss global optimization procedures adequate for seismic inversion problems. We explain how to save function evaluations (which may involve large scale ray tracing or other expensive operations) by creating a data base of information on what parts of parameter space have already been inspected. It is also shown how a correct parallel implementation using PVM speeds up the process almost linearly with respect to the number of processors, provided that the function evaluations are expensive… more
Date: April 1, 1995
Creator: Pereyra, V.; Koshy, M. & Meza, J.C.
Partner: UNT Libraries Government Documents Department
open access

The mixed waste management facility. Project baseline revision 1.2

Description: Revision 1.2 to the Project Baseline (PB) for the Mixed Waste Management Facility (MWMF) is in response to DOE directives and verbal guidance to (1) Collocate the Decontamination and Waste Treatment Facility (DWTF) and MWMF into a single complex, integrate certain and overlapping functions as a cost-saving measure; (2) Meet certain fiscal year (FY) new-BA funding objectives ($15.3M in FY95) with lower and roughly balanced funding for out years; (3) Reduce Total Project Cost (TPC) for the MWMF P… more
Date: April 1, 1995
Creator: Streit, R. D. & Throop, A. L.
Partner: UNT Libraries Government Documents Department
open access

Development of a novel neutron source with applications in calibration and monitoring. Final report

Description: The objective of this research project, development of a unique portable inertial electrostatic confinement (IEC) neutron source (10{sup 6} 2.5-MeV neutrons/second-level) has been achieved. A majority of the experimental work required for the project was reported in the 1993 Annual Report. (The abstract and table of contents for that report arc included here as Appendix A for convenience. Full copies can be obtained upon request to the PI.) Unfortunately, the DOE program providing support for t… more
Date: April 1, 1995
Creator: Miley, George H.
Partner: UNT Libraries Government Documents Department
open access

Melter technology evaluation for vitrification of Hanford Site low-level waste

Description: The current plan at the Hanford Site, in accordance with the Tri-Party Agreement among Washington State, the US Environmental Protection Agency, and the US Department of Energy, is to convert the low-level tank waste fraction into a silicate glass. The low-level waste will be composed primarily of sodium nitrate and nitrite salts concentrated in a highly alkaline aqueous solution. The capability to process up to 200 metric tons/day off glass will be established to produce an estimated 210,000 m… more
Date: April 1995
Creator: Wilson, C. N.; Burgard, K. C.; Weber, E. T. & Brown, N. R.
Partner: UNT Libraries Government Documents Department
open access

Standard technical specifications, Westinghouse Plants: Bases (Sections 2.0--3.3). Volume 2, Revision 1

Description: This NUREG contains the improved Standard Technical Specifications (STS) for Westinghouse plants. Revision 1 incorporates the cumulative changes to Revision 0, which was published in September 1992. The changes reflected in Revision 1 resulted from the experience gained from license amendment applications to convert to these improved STS or to adopt partial improvements to existing technical specifications. This NUREG is the result of extensive public technical meetings and discussions between … more
Date: April 1, 1995
Partner: UNT Libraries Government Documents Department
open access

Gamma ray sources based on resonant backscattering of laser beams with relativistic heavy ion beams

Description: Resonant backscattering of high-power laser beam with non-fully stripped, ultra-relativistic ion beams in storage rings is studied as a source for {gamma}-ray beams for elementary particle physics experiments. The laser frequency is chosen to be resonant with one of the transition frequencies of the moving ions, and the bandwidth is chosen to cover the full Doppler broadening of the ions in the beam. Due to the resonance, the scattering cross section is enhanced by a large factor compared to th… more
Date: April 1, 1995
Creator: Bessonov, E.G. & Kim, Kwang-Je
Partner: UNT Libraries Government Documents Department
open access

Management of dry flue gas desulfurization by-products in underground mines. Quarterly report, January--March 1995

Description: On September 30, 1993, the U.S. Department of Energy, Morgantown Energy Technology Center and Southern Illinois University at Carbondale (SIUC) entered into a cooperative research agreement entitled {open_quotes}Management of Dry Flue Gas Desulfurization By-Products in Underground Mines{close_quotes} (DE-FC21-93MC 30252). Under the agreement Southern Illinois University at Carbondale will develop and demonstrate several technologies for the placement of coal combustion residues in abandoned coa… more
Date: April 1, 1995
Creator: Chugh, Y.; Dutta, D. & Esling, S.
Partner: UNT Libraries Government Documents Department
open access

Prospects for Tokamak Fusion Reactors

Description: This paper first reviews briefly the status and plans for research in magnetic fusion energy and discusses the prospects for the tokamak magnetic configuration to be the basis for a fusion power plant. Good progress has been made in achieving fusion reactor-level, deuterium-tritium (D-T) plasmas with the production of significant fusion power in the Joint European Torus (up to 2 MW) and the Tokamak Fusion Test Reactor (up to 10 MW) tokamaks. Advances on the technologies of heating, fueling, dia… more
Date: April 1, 1995
Creator: Sheffield, J. & Galambos, J.
Partner: UNT Libraries Government Documents Department
open access

Decontamination systems information and research program. Quarterly report, January--March 1995

Description: The projects reported during this period are categorized into the following three areas: 1.0 Site Remediation Technologies, 2.0 Advanced Product Applications Testing, and 3.0 Information Systems, Public Policy, Community Outreach, and Economics. Summaries of the significant accomplishments for the projects reported during this period, are presented.
Date: April 1, 1995
Partner: UNT Libraries Government Documents Department
open access

Characterization of air toxics from a laboratory coal-fired combustor

Description: Emissions of hazardous air pollutants from coal combustion were studied in a laboratory-scale combustion facility, with emphasis on fine particles in three size ranges of less than 7.5 {mu}m diameter. Vapors were also measured. Substances under study included organic compounds, anions, elements, and radionuclides. Fly ash was generated by firing a bituminous coal in a combuster for 40 h at each of two coal feed rates. Flue gas was sampled under two conditions. Results for organic compounds, ani… more
Date: April 3, 1995
Partner: UNT Libraries Government Documents Department
open access

Characterization of a transient +2 sulfur oxidation state intermediate from the oxidation of aqueous sulfide

Description: The oxidation H{sub 2}S to sulfate involves a net transfer of eight electrons and occurs through the formation of several partially oxidized intermediates with oxidation states ranging from {minus}1 to +5. Known intermediates include elemental sulfur (oxidation state 0), polysulfides (outer sulfur: {minus}1, inner sulfur: 0), sulfite (+4) and thiosulfate (outer sulfur: {minus}1, inner sulfur: +5). A noticeable gap in this series of intermediates is that of a +2 sulfur oxidation state oxoacid/ox… more
Date: April 1, 1995
Creator: Vairavmurthy, M.A. & Zhou, Weiqing
Partner: UNT Libraries Government Documents Department
open access

Waste Forms Based on Cs-Loaded Silicotitanates

Description: Silicotitanate ion exchange materials are being considered for removal of radioactive Cs and Sr from tank wastes at the Hanford site. The phase evolution as a function of heat treatment temperature for several sol gel derived compositions within the Cs{sub 2}O-SiO{sub 2}-TiO{sub 2} system was investigated, in order to determine if an adequate waste form can be achieved by direct thermal conversion. The Cs leach rates and Cs loss during heat treatment of select materials were measured. Some comp… more
Date: April 1, 1995
Creator: Balmer, M. L. & Bunker, B. C.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen