States

Reactor Physics Studies in the Engineering Mockup Critical Assembly of the Fast Test Reactor (open access)

Reactor Physics Studies in the Engineering Mockup Critical Assembly of the Fast Test Reactor

Reactor physics studies in the Engineering Mockup Critical (EMC) assembly of the Fast Test Reactor (FTR) facility are reported. The study included measurements of the neutron spectrum, Doppler effect, sodium-void worth, reaction rates, subassembly worths, material replacement worths, and FTR control, safety and shim rod worths. Each of these physics studies were made in a clean plutonium (low-Pu-240) fuel composition environment and a dirty plutonium (high-Pu-240) fuel composition environment. The fuel studies were in support of determining the attendant effects of operation and safety of utilizing Light Water Reactor (LWR) plutonium fuel in the FTR. Comparison of the measured and calculated results are presented.
Date: July 1976
Creator: Pond, R. B.
System: The UNT Digital Library
Humic Substances in Natural Waters and Their Complexation With Trace Metals and Radionuclides : A Review (open access)

Humic Substances in Natural Waters and Their Complexation With Trace Metals and Radionuclides : A Review

Section I introduces the material contained in the rest of the report. Section II presents the origin and characteristics of humic materials as we understand them today and outlines the methods that have been used to separate and analyze these substances. Section III focuses on the general problem of metal-organic interactions and treats some of the factors that are important in chelating and complexing of metal ions by humic substances. Section IV deals specifically with the complexing of radionuclides by organic substances, treated from the standpoint of both empirical and experimental studies.
Date: July 1985
Creator: Boggs, Sam, Jr.; Livermore, David & Seitz, Martin G.
System: The UNT Digital Library
Li-Alloy/FeS Cell Design and Analysis Report (open access)

Li-Alloy/FeS Cell Design and Analysis Report

This report contains historical information on the Li-alloy/FeS system that will be useful in its future applications. This document includes the following: (1) the chemical and electrochemical reactions for the Li-alloy/FeS system, accomplishments in past cell development efforts, and performance attained by state-of-the-art cells vs performance goals; (2) detailed drawings of state-of-the-art cell designs, documentation of cell fabrication techniques, and comparisons of alternative types of cell components (such as BN felt vs MgO powder separators, stainless vs low-carbon steel cell housings) and fabrication techniques (such as charged vs uncharged electrodes); (3) results of post-test cell analyses, including cell failure mechanisms, electrode morphology and active material distribution, and in-cell corrosion rates; (4) data from trade-off studies between specific power and energy; (5) discussion of battery design considerations (e.g., volumetric energy density, battery charger, and high-efficiency thermal insulation); (6) results of cost studies, which include materials and manufacturing costs of cells and batteries and heating costs involved in battery operation; and (7) projections of cell designs having the greatest potential for meeting electric-vehicle performance requirements.
Date: July 1985
Creator: Gay, E. C.; Steunenberg, Robert K.; Miller, W. E.; Battles, J. E.; Kaun, T. D.; Martino, F. J. et al.
System: The UNT Digital Library
Germanium-Lithium Argon Scanning System (GLASS) : Design and Experience Through 1974 (open access)

Germanium-Lithium Argon Scanning System (GLASS) : Design and Experience Through 1974

The germanium-lithium argon scanning system (GLASS) was installed in EBR-II to monitor and analyze the gamma activity of the reactor cover gas and the reactor building air. GLASS has the capability to identify and measure 20 or more gamma peaks. Applied to the reactor cover gas, this capability has proven useful in identifying the source of fission-gas leakage from fuel elements. The gamma-peak data can clearly distinguish a carbide-fuel source from an oxide-fuel source and can often help distinguish and oxide-fuel source from a metallic-fuel source.
Date: July 1976
Creator: Brunson, G. S.
System: The UNT Digital Library
High-Performance Batteries for Off-Peak Energy Storage and Electric-Vehicle Propulsion, Progress Report: April-June 1976 (open access)

High-Performance Batteries for Off-Peak Energy Storage and Electric-Vehicle Propulsion, Progress Report: April-June 1976

Quarterly report describing the research and management efforts of the program at Argonne National Laboratory (ANL) on lithium/metal sulfide batteries during the period April-June 1976. These batteries are being developed for energy storage on utility networks and for electric-vehicle propulsion. The present cells, which operate at 400-4503C, are vertically oriented, prismatic cells with a central positive electrode of FeS or FeS2, two facing negative electrodes of lithium-aluminum alloy, and an electrolyte of molten LiCl-KCl.
Date: July 1976
Creator: Nelson, P. A.; Ivins, R. O.; Yao, N. P.; Battles, J. E.; Chilenskas, A. A.; Gay, E. C. et al.
System: The UNT Digital Library
Nuclear Technology Programs Quarterly Progress Report: October-December 1984 (open access)

Nuclear Technology Programs Quarterly Progress Report: October-December 1984

Quarterly report on activities of Argonne National Laboratory's Nuclear Technical Programs, including a review of studies of the ability of backfill to inhibit groundwater flow in a nuclear waste repository.
Date: July 1985
Creator: Steindler, M. J.
System: The UNT Digital Library
Radioactive Liquid Waste Treatment Facility (open access)

Radioactive Liquid Waste Treatment Facility

The Radioactive Liquid Waste Treatment Facility (RLWTF) at Argonne National Laboratory-West (ANL-W) in Idaho provides improved treatment for low-level aqueous waste compared to conventional systems. A unique, patented evaporated system is used in the RLWTF. SHADE (shielded hot air drum evaporator, US Patent No. 4,305,780) is a low-cost disposable unit constructed from standard components and is self-shielded. The results of testing and recent operations indicate that evaporation rates of 2 to 6 gph (8 to 23 L/h) can be achieved with a single unit housed in a standard 30-gal (114-L) drum container. The operating experience has confirmed the design evaporation rate of 60,000 gal (227,000 L) per year, using six SHADE's.
Date: July 1984
Creator: Black, Roger L.
System: The UNT Digital Library
Effects of Operating Temperature on the Characteristics of Nickel/Iron Traction Batteries (open access)

Effects of Operating Temperature on the Characteristics of Nickel/Iron Traction Batteries

Performance of improved Ni/Fe electric vehicle batteries was measured at ambient temperatures of 0, 25, and 50 C for a range of overcharge levels, open-circuit stand times, and charge and discharge rates. Tests in which charges and discharges were performed at different battery operating temperatures showed that the discharge capacity of a Ni/Fe battery is directly related to its operating temperature, but its charge acceptance is decreased at 0 and 50 C by approx. 6% from that obtained at 25 C. The decline in battery efficiency at high temperatures is the result of increased self-discharge losses. In the first 0.5 h after charge, the Ah self-discharge loss at 50 C is twice (6%) that at 0 and 25 C (approx. 3%), corresponding to an increase in initial self-discharge rate from approx. 8 to 16 A. The increased self-discharge rate apparently occurs during the latter part of charging and, thereby, causes the 6% decline in charge acceptance. A decrease in battery efficiency also resulted at 50 C (6% coulombic and 4% energy efficiency loss) when the charge current was reduced from the 3-h to the 6-h rate. In comparison, low temperatures impact battery internal resistance and IR-free voltage more than high …
Date: July 1986
Creator: DeLuca, W. H.; Biwer, R. L. & Tummillo, A. F.
System: The UNT Digital Library
Use of Monitors in FORTRAN: a Tutorial on the Barrier, Self-Scheduling DO-Loop, and Ask for Monitors (open access)

Use of Monitors in FORTRAN: a Tutorial on the Barrier, Self-Scheduling DO-Loop, and Ask for Monitors

A set of macro libraries has been developed that allows programmers to write portable FORTRAN code for multiprocessors. This document presents, in tutorial form, the macros used to implement three common synchronization patterns: self-scheduling DO-loops, barrier synchronization, and the askfor monitor.
Date: July 1984
Creator: Lusk, Ewing L. & Overbeek, Ross A.
System: The UNT Digital Library
Use of Monitors in Pascal on the Lemur: a Tutorial on the Barrier, Self-Scheduling FOR-Loop, and Askfor Monitors (open access)

Use of Monitors in Pascal on the Lemur: a Tutorial on the Barrier, Self-Scheduling FOR-Loop, and Askfor Monitors

A set of macro libraries has been developed that allows programmers to write portable Pascal code for multiprocessors. This document presents, in tutorial form, the macros used to implement three common synchronization patterns: self-scheduling FOR-loops, barrier synchronization, and the askfor monitor.
Date: July 1984
Creator: Clausing, J. A.; Hagstrom, R. T.; Lusk, Ewing L. & Overbeek, Ross A.
System: The UNT Digital Library
Mathematical Modeling and Evaluation of Radionuclide Transport Parameters from the ANL Laboratory Analog Program (open access)

Mathematical Modeling and Evaluation of Radionuclide Transport Parameters from the ANL Laboratory Analog Program

Computer model simulation is required to evaluate the performance of proposed or future high-level radioactive waste geological repositories. However, the accuracy of a model in predicting the real situation depends on how well the values of the transport properties are prescribed as input parameters. Knowledge of transport parameters is therefore essential. We have modeled ANL's Experiment Analog Program which was designed to simulate long-term radwaste migration process by groundwater flowing through a high-level radioactive waste repository. Using this model and experimental measurements, we have evaluated neptunium (actinide) deposition velocity and analyzed the complex phenomena of simultaneous deposition, erosion, and re-entrainment of bentonite when groundwater is flowing through a narrow crack in a basalt rock. The present modeling demonstrates that we can obtain the values of transport parameters, as added information without any additional cost, from the available measurements of laboratory analog experiments.
Date: July 1984
Creator: Chen, B. C-J.; Hull, J. R.; Seitz, M. G.; Sha, William T.; Shah, V. L. & Soo, S. L.
System: The UNT Digital Library
Transuranic Decontamination of Nitric Acid Solutions by the Truex Solvent Extraction Process: Preliminary Development Studies (open access)

Transuranic Decontamination of Nitric Acid Solutions by the Truex Solvent Extraction Process: Preliminary Development Studies

This report summarizes the work that has been performed to date at Argonne National Laboratory on the development of the TRUEX process, a solvent extraction process employing a bifunctional organophosphorous reagent in a PUREX process solverc (tributyl phosphate-normal paraffinic hydrocarbons). The purpose of this extraction process is to separate and concentrate transuranic (TRU) elements from nuclear waste.
Date: July 1984
Creator: Vandegrift, G. F.
System: The UNT Digital Library
Burner Stabilized Flames in Fluids (open access)

Burner Stabilized Flames in Fluids

In this report it is shown that a burner placed in a combustible fluid can have a stabilizing effect on a plane flame. A mathematical model is derived in which the flame is modeled as a surface of discontinuity in the flow field. Jump conditions for the fluid variables, as well as an expression for the flame speed, are obtained from an asymptotic analysis of the detailed structure of the flame. The model is applied to investigate the linear stability of a plane flame. Stable behavior is shown to exist for certain regimes of the parameters: Lewis number, burner strength, heat release and inflow velocity.
Date: July 1984
Creator: Kaper, Hans G.; Leaf, Gary K.; Matalon, Moshe & Matkowsky, Bernard J.
System: The UNT Digital Library
Radiological and Environmental Research Division Annual Report: Part 3, Ecology, January-December 1980 (open access)

Radiological and Environmental Research Division Annual Report: Part 3, Ecology, January-December 1980

Annual report of the Argonne National Laboratory Radiological and Environmental Research Division regarding activities related to ecology. This report discuses programs including a development project for microcosm screening systems, two initiatives in ecological modeling, and a program of field experiments for a national assessment of crop losses due to air pollution.
Date: July 1981
Creator: Argonne National Laboratory. Radiological and Environmental Research Division.
System: The UNT Digital Library
Radiological and Environmental Research Division Annual Report: Part 3, Ecology, January-December 1981 (open access)

Radiological and Environmental Research Division Annual Report: Part 3, Ecology, January-December 1981

Annual report of the Argonne National Laboratory Radiological and Environmental Research Division regarding activities related to ecology and funding issues during the year.
Date: July 1982
Creator: Argonne National Laboratory. Radiological and Environmental Research Division.
System: The UNT Digital Library
Fuel Cycle Programs, Quarterly Progress Report: October-December 1979 (open access)

Fuel Cycle Programs, Quarterly Progress Report: October-December 1979

Quarterly report of the Argonne National Laboratory Chemical Engineering Division regarding activities related to properties and handling of radioactive materials, operation of nuclear reactors, and other relevant research.
Date: July 1980
Creator: Steindler, M. J.; Bates, J. K.; Couture, R. A.; Flynn, K. F.; Gerding, T. J.; Jardine, L. J. et al.
System: The UNT Digital Library
Fuel Cycle Programs, Quarterly Progress Report: July-September 1980 (open access)

Fuel Cycle Programs, Quarterly Progress Report: July-September 1980

Quarterly report of the Argonne National Laboratory Chemical Engineering Division regarding activities related to properties and handling of radioactive materials, operation of nuclear reactors, and other relevant research.
Date: July 1981
Creator: Steindler, M. J.; Bates, J. K.; Brock, R. E.; Cannon, T. F.; Couture, R. A.; Deeken, P. G. et al.
System: The UNT Digital Library
Fuel Cycle Programs, Quarterly Progress Report: October-December 1980 (open access)

Fuel Cycle Programs, Quarterly Progress Report: October-December 1980

Quarterly report of the Argonne National Laboratory Chemical Engineering Division regarding activities related to properties and handling of radioactive materials, operation of nuclear reactors, and other relevant research.
Date: July 1981
Creator: Steindler, M. J.; Vogler, Seymour; Vandegrift, G. F.; Williams, Jacqueline; Gerding, T. J.; Jardine, L. J. et al.
System: The UNT Digital Library
Improving the Accuracy of Computed Eigenvalues and Eigenvectors (open access)

Improving the Accuracy of Computed Eigenvalues and Eigenvectors

This paper describes a computational method for improving the accuracy of a given eigenvalue and its associated eigenvector. The method is analogous to iterative improvement for the solution of linear systems. An iterative algorithm using working precision arithmetic is applied to increase the accuracy of the eigenpair. The only extended precision computation is the residual calculation. The method is related to inverse iteration and to Newton's method applied to the eigenvalue problem.
Date: July 1981
Creator: Dongarra, J. J.; Moler, Cleve B. & Wilkinson, J. H.
System: The UNT Digital Library
First Annual Workshop on Ice Storage for Cooling Applications : Argonne National Laboratory, June 4-5, 1981 (open access)

First Annual Workshop on Ice Storage for Cooling Applications : Argonne National Laboratory, June 4-5, 1981

The papers presented at the first annual workshop on ice storage for cooling applications by participants from the U.S. and Canada are summarized. Novel methods of preparing naturally frozen ice and storing it are described. Attention is given to technical and economic problems and related design considerations. Comparison is made with conventional air conditioning methods. Both industrial and residential applications are discussed with regard to cost.
Date: July 1981
Creator: Gorski, A. J.
System: The UNT Digital Library
Automatic Transformations in the Inference Process (open access)

Automatic Transformations in the Inference Process

A technique for incorporating automatic transformations into processes such as the application of inference rules, subsumption, and demodulation provides a mechanism for improving search strategies for theorem proving problems arising from the field of program verification. The incorporation of automatic transformations into the inference process can alter the search space for a given problem, and is particularly useful for problems having broad rather than deep proofs. The technique can also be used to permit the generation of inferences that might otherwise be blocked and to build some commutativity or associativity into the unification process. Appropriate choice of transformations, and new literal clashing and unification algorithms for applying them, showed significant improvement on several real problems according to several distinct criteria.
Date: July 1980
Creator: Veroff, Robert L.
System: The UNT Digital Library
Polishing Methods for Metallic and Ceramic Transmission Electron Microscopy Specimens (open access)

Polishing Methods for Metallic and Ceramic Transmission Electron Microscopy Specimens

"In recent years, the increasing sophistication of transmission electron microscope (TEM) studies of materials has necessitated more exacting methods of specimen preparation. The present report describes improved equipment and techniques for electropolishing and chemically polishing a wide variety of specimens. Many of the specimens used in developing or improving the techniques to be described were irradiated with heavy ions such as nickel or vanadium to study radiation damage. The high cost of these specimens increased the need for reproducible methods of initial preparation, postirradiaton processing, and final thinning for TEM examination. A technique was also developed to salvage specimens that had previously been thinned but were unusable for various reasons. Jet polishing is, in general, the method of choice for surface polishing, sectioning, and thinning. The older beaker electropolishing method is included in this report because it is inexpensive and simple, and gives some insight into how the more recent methods were developed. 29 figures, 8 tables. (ERA citation 07:004650)."--NTIS abstract.
Date: July 1981
Creator: Kestel, B. J.
System: The UNT Digital Library
Physics Division Annual Review: April 1, 1989-March 31, 1990 (open access)

Physics Division Annual Review: April 1, 1989-March 31, 1990

Annual report of activities of the Argonne National Laboratory Physics Division, including research at ATLAS, medium-energy nuclear physics and weak interactions, theoretical nuclear physics, and atomic and molecular physics.
Date: July 1990
Creator: Argonne National Laboratory. Physics Division.
System: The UNT Digital Library
Electronic Transport Properties in Copper Oxides (open access)

Electronic Transport Properties in Copper Oxides

Oxidation of copper and electronic transport in thermally grown large-grain poly-crystals of non-stoichiometric copper oxides were studied at elevated temperatures. Thermogravimetric copper oxidation was studied in air and oxygen at temperatures between 350 and 100 C. From the temperature-dependence of oxidation rates, three different processes can be identified for the oxidation of copper: bulk diffusion, grain-boundary diffusion, and surface control with whisker growth; these occur at high, intermediate, and low temperatures, respectively. Electrical conductivity measurements as a function of temperature (350 - 1134 C) and pO2 (10(sup⁻⁸-1.0 atm) indicated intrinsic electronic conduction in CuO over the entire range of conditions. Electronic behavior of non-stoichiometric Cu(sub 2)O indicates that the charge defects are doubly ionized oxygen interstitials and holes. The calculated enthalpy of formation of oxygen ((Delta)H(sub O(sub 2))) and the hole conduction energy (E(sub H)) at constant composition for non-stoichiometric Cu2O are 2.0 (plus minus) 0.2 eV and 0.82 (plus minus) 0.02 eV, respectively.
Date: July 1991
Creator: Park, J.-H. & Natesan, K.
System: The UNT Digital Library