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Radiolytic and Radiolytically Induced Generation of Gases from Synthetic Wastes : Final Report

Description: To better understand the processes leading to the generation and release of gases from waste tanks, the authors studied the radiolytic and thermal generation of H2, N2O, N2, O2, and NH3 in nonradioactive waste simulant solutions and slurries. The radiolytic sources for H2 are e(sub aq)⁻ and its predecessors and H atoms. Radiolysis of the water generates some H2 and an additional amount comes from the hydrogen abstraction reaction H + RH(yields) H2+R(center_dot). Nitrate scavenges e(sub aq)(sup … more
Date: October 1993
Creator: Meisel, Dan; Jonah, Charles D.; Kapoor, S.; Matheson, Max S. & Sauer, M. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Space reactor fuel element testing in upgraded TREAT

Description: The testing of candidate fuel elements at prototypic operating conditions with respect to temperature, power density, hydrogen coolant flow rate, etc., a crucial component in the development and qualification of nuclear rocket engines based on the Particle Bed Reactor (PBR), NERVA-derivative, and other concepts. Such testing may be performed at existing reactors, or at new facilities. A scoping study has been performed to assess the feasibility of testing PBR based fuel elements at the TREAT re… more
Date: May 1, 1993
Creator: Todosow, M.; Bezler, P.; Ludewig, H. & Kato, W.Y.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Pilot study risk assessment for selected problems at the Nevada Test Site (NTS)

Description: The Nevada Test Site (NTS) is located in southwestern Nevada, about 105 km (65 mi) northwest of the city of Las Vegas. A series of tests was conducted in the late 1950s and early 1960s at or near the NTS to study issues involving plutonium-bearing devices. These tests resulted in the dispersal of about 5 TBq of [sup 239,24O]Pu on the surficial soils at the test locations. Additionally, underground tests of nuclear weapons devices have been conducted at the NTS since late 1962; ground water bene… more
Date: June 1, 1993
Creator: Daniels, J.I. (ed.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Hydronic Radiant Cooling: Overview and Preliminary Performance Assessment

Description: A significant amount of electrical energy used to cool non-residential buildings is drawn by the fans used to transport the cool air through the thermal distribution system. Hydronic systems reduce the amount of air transported through the building by separating ventilation and thermal conditioning. Due to the physical properties of water, hydronic distribution systems can transport a given amount of thermal energy using less than 5% of the otherwise necessary fan energy. This savings alone sig… more
Date: May 1, 1993
Creator: Feustel, H. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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K-Area Acid/Caustic Basin groundwater monitoring report

Description: During fourth quarter 1992, samples from the KAC monitoring wells at the K-Area Acid/Caustic Basin were analyzed for indicator parameters, groundwater quality parameters, parameters indicating suitability as drinking water, and other constituents. New wells KAC 8 and 9 also were sampled for GC/MS VOA (gas chromatograph/mass spectrometer volatile organic analyses). Monitoring results that exceeded the final Primary Drinking Water Standards (PDWS) or the Savannah River Site (SRS) flagging criteri… more
Date: March 1, 1993
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Structure and stability of microvoids in A-Si:H

Description: Microvoids appear to be universally present in a-Si:H as demonstrated by small angle X-ray scattering including the presence of microvoids in device quality glow discharge a-Si:H. We have studied the structural properties of these microvoids with molecular dynamics simulations. Using molecular dynamics simulations with classical potentials, we have created microvoids by removing Si and H atoms from a computer generated a-Si:H network. The internal surfaces of the microvoids were passivated with… more
Date: January 1, 1993
Creator: Biswas, R. & Kwon, I.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Neutral-current detection in the Sudbury Neutrino Observatory

Description: The Sudbury Neutrino Observatory (SNO) will have the capability of detecting all active species of neutrinos with energies greater than 2.2 MeV by the neutral-current disintegration of deuterium. The comparison of this rate with the rate of inverse beta decay of the deuteron will yield a nearly model-independent answer to the question of whether electron neutrinos from the sun oscillate into mu or tau neutrinos. The signal of a neutral-current interaction is the liberation of a free neutron in … more
Date: January 1, 1993
Creator: Bowles, T. J.; Doe, P. J.; Fowler, M. M.; Hime, A.; Robertson, R. G. H.; Thornewell, P. M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Wave function calculations in finite nuclei

Description: One of the central problems in nuclear physics is the description of nuclei as systems of nucleons interacting via realistic potentials. There are two main aspects of this problem: (1) specification of the Hamiltonian, and (2) calculation of the ground (or excited) states of nuclei with the given interaction. Realistic interactions must contain both two- and three-nucleon potentials and these potentials have a complicated non-central operator structure consisting, for example, of spin, isospin … more
Date: January 1, 1993
Creator: Pieper, Steven C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Surveillance of Site A and Plot M

Description: The results of the environmental surveillance program conducted at Site A/Plot M in the Palos Forest Preserve area for CY 1992 are presented. The surveillance program is the ongoing remedial action that resulted from the 1976--1978 radiological characterization of the site. That study determined that very low levels of hydrogen-3 (as tritiated water) had migrated from the burial ground and were present in two nearby hand-pumped picnic wells. The current program consists of sample collection and… more
Date: May 1, 1993
Creator: Golchert, N.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Measurements of the total CO[sub 2] concentration and partial pressure of CO[sub 2] in seawater during WOCE expeditions in the South Pacific Ocean

Description: During the first year of the grant, we participated in three WOCE expeditions (a total of 152 days at sea) in the South Pacific Ocean, and the field phase of the proposed investigation has been successfully completed. The total CO[sub 2] concentration and pCO[sub 2] were determined at sea in 4419 water samples collected at 422 stations. On the basis of the shipboard analyses of SIO Reference Solutions for CO, and a comparison with the results of previous expeditions, the overall precision of ou… more
Date: June 29, 1993
Creator: Takahashi, T.; Goddard, J. G.; Chipman, D. W. & Rubin, S. I.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Critical parameters and TCLP performance of the RFP microwave solidification system

Description: Two series of experiments were conducted at Rocky Flats Plant (RFP) to identify the critical operating parameters for microwave solidification and to evaluate the performance of the product against the EPA's Toxicity Characteristic Leach Procedure (TCLP). A surrogate hydroxide coprecipitation sludge spiked with heavy metals was used in the study. The RFP process uses microwave energy to heat and melt the waste into a vitreous final form that is suitable for land disposal. The results of the stu… more
Date: January 1, 1993
Creator: Sprenger, G.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Advanced heat pump cycle

Description: The desorption and absorption process of a vapor compression heat pump with a solution circuit (VCHSC) proceeds at gliding temperature intervals, which can be adjusted over a wide range. In case that the gliding temperature intervals in the desorber and the absorber overlap, a modification of the VCHSC employing a desorber/absorber heat exchange (DAHX) can be introduced, which results in an extreme reduction of the pressure ratio. Although the DAHX-cycle has features of a two-stage cycle, it st… more
Date: July 1, 1993
Creator: Groll, E.A. & Radermacher, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Study of chemical reactions under the influence of ultrasound

Description: At Los Alamos the author is interested in sonochemistry because there is potential for accelerating reactions involving the synthesis of certain nitro compounds and for reducing the possibility of decomposition under milder reaction conditions. The author has initiated the study of the nitration of 2,4-dihydro-3H-1,2,4-triazol-3-one with concentrated nitric acid under sonication. The preparation of 3,6-bis(3,5-dimethylpyrazol-1-yl)-1,2-dihydro-1,2,4,5-tetrazine, and oxidation of 3,6-diamino-1,2… more
Date: January 1, 1993
Creator: Lee, Kien-Yin.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Characterization of nanoscale oxide and oxyhydroxide powders using EXAFS spectroscopy

Description: Extended x-ray absorption fine structure (EXAFS) spectroscopy has been used to determine the structural environment local to iron(HI) and zircorium(IV) cations in respectively, nanoscale iron oxyhydroxide and nanoscale zirconium oxide powders. The iron oxyhydroxide powder, produced by the modified reverse micelle (MRM) technology, was found to have a short-range structure most similar to that of goethite ([alpha]-FeOOH). The short-range structure of the zirconium oxide powder, produced using th… more
Date: June 1, 1993
Creator: Darab, J.G.; Linehan, J.C.; Matson, D.W. (Pacific Northwest Lab., Richland, WA (United States)) & Ma, Y. (Washington Univ., Seattle, WA (United States). Dept. of Physics)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Development of novel copper-based sorbents for hot gas cleanup

Description: The objective of this investigation is to evaluate two novel copper-based sorbents (i.e. copper-chromium and copper-cerium) for their effectiveness in removing hydrogen sulfide from fuel gas in the temperature range of 650[degree] to 850[degree]C. New sorbent compositions from the selected Cu-Cr-O and Cu-Ce-O binary oxides were prepared and characterized by BET N[sub 2]-desorption surface area measurement following various calcination/time-temperature exposures. The general trends reported last… more
Date: January 1, 1993
Creator: Hill, A.H.; Abbasian, J. (Institute of Gas Technology, Chicago, IL (United States)); Flytzani-Stephanopoulos, M.; Bo, L.; Li, Li. (Massachusetts Inst. of Tech., Cambridge, MA (United States)) & Honea, F.I. (Illinois Clean Coal Inst., Carterville, IL (United States))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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High flux film and transition boiling

Description: An investigation was conducted on the potential for altering the boiling curve through effects of high velocity and high subcooling. Experiments using water and Freon-113 flowing over cylindrical electrical heaters in crossflow were made to see how velocity and subcooling affect the boiling curve, especially the film and transition boiling regions. We sought subcooling levels down to near the freezing points of these two liquids to prove the concept that the critical heat flux and the minimum h… more
Date: February 1, 1993
Creator: Witte, L.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Hydrogen and sulfur production from hydrogen sulfide wastes

Description: A new hydrogen sulfide waste-treatment process that uses microwave plasma-chemical technology is currently under development in the Soviet Union and in the United States. Whereas the present waste treatment process only recovers sulfur at best, this novel process recovers both hydrogen and sulfur. The plasma process involves dissociating hydrogen sulfide in a nonequilibrium'' plasma in a microwave or radio-frequency reactor. After the dissociation process, sulfur is condensed and sold just as i… more
Date: January 1, 1993
Creator: Harkness, J. B. L. & Doctor, R. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The influence of naturally-occurring organic acids on model estimates of lakewater acidification using the model of acidification of groundwater in catchments (MAGIC)

Description: A project for the US Department of Energy, entitled Incorporation of an organic acid representation into MAGIC (Model of Acidification of Groundwater in Catchments) and Testing of the Revised Model UsingIndependent Data Sources'' was initiated by E S Environmental Chemistry, Inc. in March, 1992. Major components of the project include: improving the MAGIC model by incorporating a rigorous organic acid representation, based on empirical data and geochemical considerations, and testing the revise… more
Date: March 5, 1993
Creator: Sullivan, T.J.; Eilers, J.M. (E and S Environmental Chemistry, Inc., Corvallis, OR (United States)); Cosby, B.J. (Virginia Univ., Charlottesville, VA (United States). Dept. of Environmental Sciences); Driscoll, C.T. (Syracuse Univ., NY (United States). Dept. of Civil Engineering); Hemond, H.F. (Massachusetts Inst. of Tech., Cambridge, MA (United States). Dept. of Civil Engineering) & Charles, D.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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MHD simulation of deuterium-fiber-initiated Z-pinches with two-fluid effects

Description: Two-dimensional cold-start'' resistive MHD computations of formation and evolution of deuterium-fiber-initiated Z-pinches have been extended to include separate ion and electron energy equations and finite-Larmor-radius ordered terms. In the Ohm's Law (magnetic field evolution) equation, Hall and diamagnetic pressure terms have been added, and corresponding terms have been added to the energy equations. Comparison is made of the results of these computations with previous computations and with … more
Date: January 1, 1993
Creator: Sheehey, P. (California Univ., Los Angeles, CA (United States). Dept. of Physics) & Lindemuth, I.R. (Los Alamos National Lab., NM (United States))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Chemistry of coal-related microparticles

Description: A new type of electrodynamic balance was designed, constructed and applied to the study of the chemistry of macerals and the chemical reaction between CaO sorbent particles and SO[sub 2]. The single-particle device was coupled to a Raman spectrometer. With this balance a single electrically charged microparticle is suspended in visible and infrared laser beams by means of superposed ac and dc electrical fields. The apparatus was designed to permit gas flow through the chamber so that gas-solid … more
Date: January 11, 1993
Creator: Davis, E.J. & Krieger-Brockett, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Columbia River monitoring: Distribution of tritium in Columbia River water at the Richland Pumphouse

Description: The Surface Environmental Surveillance Project (SESP) is conducted by the Pacific Northwest Laboratory (PNL) for the US Department of Energy (DOE). This report presents the results of a special study conducted as part of the SESP to supplement the routine Columbia River monitoring program and provide information relative to the dispersion and distribution of Hanford origin contaminants entering the river through the seepage of ground water along the Hanford Site. Sampling was conducted along cr… more
Date: February 1, 1993
Creator: Dirkes, R.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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High-level waste management and treatment program for The Analytical Laboratory

Description: A new program has been successfully implemented for the treatment, storage, and disposal of high-level radioactive mixed wastes generated during chemical and radiological analysis at the Pacific Northwest Laboratory in Richland, Washington. This shielded laboratory facility has effectively treated RCRA waste generated predominantly from analyses of radioactive samples obtained during the Tank Waste Characterization Program on the Hanford Site. Several batches of the radioactive mixed waste, gen… more
Date: February 1, 1993
Creator: King, A.G.; Baldwin, D.L.; Steele, R.T. & Poston, K.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Dynamics of dissociation versus ionization in strong laser fields

Description: In this paper, experimental results are presented which clearly demonstrate the effectiveness that an external field has in altering the dissociation dynamics. The experiment examines the strong-field dissociation dynamics of molecular hydrogen ions and its deuterated isotopes. These studies involve multiphoton excitation in the intensity regime of 10[sup 11-14] W/cm[sup 2] with the fundamental and second harmonic of a ND:YAG or ND:YLF laser system. Measurements include energy resolved electron… more
Date: January 1, 1993
Creator: DiMauro, L. F. & Yang, B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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In situ redox manipulation: Enhancement of contaminant destruction and immobilization

Description: This report discusses a project to develop, test, and evaluate in situ methods for immobilizing inorganic contaminants (metals, inorganic ions, and radionuclides) and destroying nitrates organic contaminants, (primarily chlorinated hydrocarbons). This research work is being performed for the US Department of Energy through the In situ Remediation Integrated Program.
Date: January 1, 1993
Creator: Fruchter, J.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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