Preliminary evaluation of neutron capture cross sections for /sup 144/Sm, /sup 145/Sm and /sup 145/Pm (open access)

Preliminary evaluation of neutron capture cross sections for /sup 144/Sm, /sup 145/Sm and /sup 145/Pm

We have made preliminary neutron-capture cross-section calculations of the Hauser-Feshbach type for the isotopes /sup 144/Sm, /sup 145/Sm, and /sup 145/Pm to investigate the production of radioactive /sup 145/Pm by neutron capture on the stable isotope /sup 144/Sm. The calculations were made for incident neutron energies from 2.5 MeV to about 1/sup -4/ or 10/sup -5/ MeV, wherever the first unbound resonance was estimated to occur in each case. At that energy, the calculated value was reduced by a somewhat arbitrary factor, and the excitation function extended down to thermal energy using a (E/sub n/)/sup -1/2/ energy dependence. Since very large uncertainties are associated with the position and magnitude of the first unbound resonance and the subsequent extrapolation back to thermal energy, the cross sections in this low-energy region should not be considered more accurate than +- a factor of 10. For incident neutron energies above each step, the calculations represent an average through the separated and overlapping resonance regions and may be accurate to better than +- a factor of 2. 18 refs., 7 figs., 5 tabs.
Date: February 13, 1986
Creator: Gardner, D. G. & Gardner, M. A.
Object Type: Report
System: The UNT Digital Library
Consolidation and shear failure leading to subsidence and settlement. Final report (open access)

Consolidation and shear failure leading to subsidence and settlement. Final report

Subsidence and settlement are phenomena that are much more destructive than generally thought. In shallow land burials they may lead to cracking of the overburden and eventual exposure and escape of waste material. The primary causes are consolidation and cave-ins. Laboratory studies performed at Los Alamos permit us to predict settlement caused by consolidation or natural compaction of the crushed tuff overburden. We have also investigated the shear failure characteristics of crushed tuff that may lead to subsidence. Examples of expected settlement and subsidence are calculated based on the known geotechnical characteristics of crushed tuff. The same thing is done for bentonite/tuff mixes because some field experiments were performed using this additive (bentonite) to reduce the hydraulic conductivity of the crushed tuff. Remedial actions, i.e., means to limit the amount of settlement, are discussed. We finally discuss our field experiment, which studies the influence of subsidence on layered systems in general and on biobarriers in particular. The share of the produced cavities is compared with cavities produced by idealized voids in an idealized environment. Study of root penetration at subsidence sites gives us an indication of the remaining degree of integrity. 30 refs., 24 figs., 19 tabs.
Date: February 1, 1986
Creator: Abeele, W.; Nyhan, J. W.; Hakonson, T. E.; Drennon, B. J.; Lopez, E. A.; Herrera, W. J. et al.
Object Type: Report
System: The UNT Digital Library
Heteromorphism and crystallization paths of katungites, Navajo volcanic field, Arizona, USA (open access)

Heteromorphism and crystallization paths of katungites, Navajo volcanic field, Arizona, USA

A swarm of thin, isochemical but heteromorphic dikes crops out in the valley of Hasbidito Creek in NE Arizona. The swarm is part of the dominantly potassic, mid-Tertiary Navajo volcanic field of the Colorado Plateau. Whole-rock chemical analyses of five samples from four of the dikes indicate that they are chemically identical to the katungites of Uganda. These dikes show the characteristic seriate-porphyritic texture of lamprophyres. Samples of an olivine-melilitite dike from the same swarm lack this texture and the chemical analysis, while similar to those of the other dikes, shows effects from the incorporation of xenocrystic olivine. Over 20 mineral phases have been identified in the Arizona samples and as many as 18 phases may occur in a single sample. The major phases are phlogopite, olivine, perovskite, opaque oxides, +- melilite and +- clinopyroxene. Based upon the modal mineralogies and textures of ten dike samples, we recognize five general non-equilibrium assemblages. Comparison of these assemblages with recent experimental results shows that they represent various combinations of complete and incomplete reactions. Reaction relations were determined by entering melt and phase compositions into the computer program GENMIX to obtain balanced reactions. By combining petrographic observations with mineral chemical data, balanced reactions …
Date: January 1, 1986
Creator: Laughlin, A. W.; Charles, R. W. & Aldrich, M. J., Jr.
Object Type: Article
System: The UNT Digital Library
Accelerated beam experiments with the ORNL SITEX (Surface Ionization with Transverse Extraction) and VITEX (Volume Ionization with Transverse Extraction) H/sup -//D/sup -/ sources (open access)

Accelerated beam experiments with the ORNL SITEX (Surface Ionization with Transverse Extraction) and VITEX (Volume Ionization with Transverse Extraction) H/sup -//D/sup -/ sources

Beam parameters have been measured for both the Surface Ionization with Transverse Extraction (SITEX) and Volume Ionization with Transverse Extraction (VITEX) H/sup -//D/sup -/ ion sources. Both sources use a reflex discharge to generate the main plasma. Beam energies up to 18 keV were used for pulse lengths up to several seconds. For SITEX, Faraday cup magnetically analyzed D/sup -/ beam currents of 110 mA at extraction densities of 48 mA/cm/sup 2/ and at a source ion temperature of 4 eV have been measured. For the VITEX results, Faraday cup magnetically analyzed beam currents of up to 80 mA at extraction densities of 27 mA/cm/sup 2/ and at a source ion temperature of 0.5 eV have been measured. Virtually all extracted electrons were recovered at an energy of 10 to 30% of the accel beam energy, and there were none in the analyzed beam.
Date: January 1, 1986
Creator: Dagenhart, W. K.; Tsai, C. C.; Stirling, W. L.; Ryan, P. M.; Schechter, D. E.; Whealton, J. H. et al.
Object Type: Article
System: The UNT Digital Library
Discernment of two opposing reports on the hydrological effects of a hydrothermal power plant (open access)

Discernment of two opposing reports on the hydrological effects of a hydrothermal power plant

Two evaluations to determine the hydrological effects of a 50-megawatt hydrothermal power plant in the Jemez Mountains give dramatically different results. One shows little effect; the other, a large one. The treatments agree on some thermal-zone water supplies to the Jemez River but not on the expected changes in these flows. The primary areas of disagreement appear to be the total volume of water in the reservoir and the movement of this water to the point of withdrawal. The author (a nonhydrologist) has compared these reports but leaves final judgment of the accuracy of either evaluation for some erudite hydrologists, as some experimental data and model development are needed.
Date: June 1, 1986
Creator: Williams, J. M.
Object Type: Report
System: The UNT Digital Library
Covariances of evaluated nuclear data based upon uncertainty information of experimental data and nuclear models (open access)

Covariances of evaluated nuclear data based upon uncertainty information of experimental data and nuclear models

A straightforward derivation is presented for the covariance matrix of evaluated cross sections based on the covariance matrix of the experimental data and propagation through nuclear model parameters. 10 refs.
Date: November 17, 1986
Creator: Poenitz, W. P. & Peelle, R. W.
Object Type: Article
System: The UNT Digital Library
Ancillary effects of selected acid deposition control policies (open access)

Ancillary effects of selected acid deposition control policies

NAPAP is examining a number of potential ways to reduce the precursors (sulfur dioxide and nitrogen oxides) to acid deposition. However, the policies to reduce acid deposition will have other physical, biological and economic effects unrelated to acid deposition. For example, control policies that reduce sulfur dioxide emissions may also increase visibility. The effects of an acid deposition policy that are unrelated to acid deposition are referred to as ''ancillary'' effects. This reserch identifies and characterizes the principle physical and economic ancillary effects associated with acid deposition control and mitigation policies. In this study the ancillary benefits associated with four specific acid deposition policy options were investigated. The four policy options investigated are: (1) flue gas desulfurization, (2) coal blending or switching, (3) reductions in automobile emissions of NO/sub x/, and (4) lake liming. Potential ancillary benefits of each option were identified and characterized. Particular attention was paid to the literature on economic valuation of potential ancillary effects.
Date: August 1, 1986
Creator: Moe, R.J.; Lyke, A. J. & Nesse, R. J.
Object Type: Report
System: The UNT Digital Library
MINIMARS conceptual design: Final report (open access)

MINIMARS conceptual design: Final report

This volume contains the following sections: (1) fueling systems; (2) blanket; (3) alternative blanket concepts; (4) halo scraper/direct converter system study and final conceptual design; (5) heat-transport and power-conversion systems; (6) tritium systems; (7) minimars air detritiation system; (8) appropriate radiological safety design criteria; and (9) cost estimate. (MOW)
Date: September 1, 1986
Creator: Lee, J. D.
Object Type: Report
System: The UNT Digital Library
Feed Materials Production Center. Final phase-in report volume 1 of 15 operations and maintenance, October 25, 1985--December 31, 1985 (open access)

Feed Materials Production Center. Final phase-in report volume 1 of 15 operations and maintenance, October 25, 1985--December 31, 1985

The basic purpose of the transition program in the operations area was to obtain a detailed understanding of the FMPC operations with emphasis on equipment and organization, Also considered in this evaluation were several extant conditions at FMPC which may have significant impact on initiatives adopted in the operations area. These conditions are as follows: capital expenditures over the last several years averaged less than 20% of what might be considered minimum to sustain such a facility in a good operating condition; the production load is ramping up placing greater demands on an old facility; the workforce is relatively inexperienced (68% with less than five (5) years) at FMPC; plans are in place to institute major upgrading of FMPC facilities; the RFP described the need for a major effort in the Environment, Safety and Health Area. Considering the above concerns, the transition program was focused in the following areas: Procedures - An inexperienced workforce operating in an atmosphere requiring rigid compliance with more rigorous environmental criteria necessitates clear, concise up-to-date procedures to enhance performance; Training - New equipment, new people and rigorous environmental constraints demand an aggressive, focused training program. Equipment - Site conditions are not conducive to reliable equipment …
Date: January 17, 1986
Creator: Britton, W. H.
Object Type: Report
System: The UNT Digital Library
1986 annual information meeting. Abstracts (open access)

1986 annual information meeting. Abstracts

Abstracts are presented for the following papers: Geohydrological Research at the Y-12 Plant (C.S. Haase); Ecological Impacts of Waste Disposal Operations in Bear Creek Valley Near the Y-12 Plant (J.M. Loar); Finite Element Simulation of Subsurface Contaminant Transport: Logistic Difficulties in Handling Large Field Problems (G.T. Yeh); Dynamic Compaction of a Radioactive Waste Burial Trench (B.P. Spalding); Comparative Evaluation of Potential Sites for a High-Level Radioactive Waste Repository (E.D. Smith); Changing Priorities in Environmental Assessment and Environmental Compliance (R.M. Reed); Ecology, Ecotoxicology, and Ecological Risk Assessment (L.W. Barnthouse); Theory and Practice in Uncertainty Analysis from Ten Years of Practice (R.H. Gardner); Modeling Landscape Effects of Forest Decline (V.H. Dale); Soil Nitrogen and the Global Carbon Cycle (W.M. Post); Maximizing Wood Energy Production in Short-Rotation Plantations: Effect of Initial Spacing and Rotation Length (L.L. Wright); and Ecological Communities and Processes in Woodland Streams Exhibit Both Direct and Indirect Effects of Acidification (J.W. Elwood).
Date: January 1, 1986
Creator: unknown
Object Type: Article
System: The UNT Digital Library
Electric energy savings from new technologies (open access)

Electric energy savings from new technologies

Purpose of the report is to provide information about the electricity-saving potential of new technologies to OCEP that it can use in developing alternative long-term projections of US electricity consumption. Low-, base-, and high-case scenarios of the electricity savings for ten technologies were prepared. The total projected annual savings for the year 2000 for all ten technologies were 137 billion kilowatt hours (BkWh), 279 BkWh, and 470 BkWh, respectively, for the three cases. The magnitude of these savings projections can be gauged by comparing them to the Department's reference case projection for the 1985 National Energy Policy Plan. In the Department's reference case, total consumption in 2000 is projected to be 3319 BkWh. Thus, the savings projected here represent between 4% and 14% of total consumption projected for 2000. Because approximately 75% of the base-case estimate of savings are already incorporated into the reference forecast, reducing projected electricity consumption from what it otherwise would have been, the savings estimated here should not be directly subtracted from the reference forecast.
Date: January 1, 1986
Creator: Moe, R. J.; Harrer, B. J.; Kellogg, M. A.; Lyke, A. J.; Imhoff, K. L. & Fisher, Z. J.
Object Type: Report
System: The UNT Digital Library
Pacific Northwest Laboratory annual report for 1985 to the DOE Office of Energy Research. Part 1. Biomedical sciences (open access)

Pacific Northwest Laboratory annual report for 1985 to the DOE Office of Energy Research. Part 1. Biomedical sciences

This report summarizes progress on OHER biomedical and health-effects research conducted at PNL in FY 1985 to develop information for a comprehensive understanding of the interaction of energy-related radiation and chemicals with man. Our continuing emphasis on decreasing the uncertainty of health-effects risk estimates to man from existing and/or developing energy-related technologies supports the DOE goal of increasing and diversifying national energy resources and decreasing risks to human health. The report is arranged to reflect the PNL research relative to OHER programmatic needs. The first section concerns evaluation of possible health effects among nuclear workers. The next two sections, which contain reports of health-effects research in biological systems, include health effects of radiation and health effects of chemical mixtures. The last section is related to medical applications of nuclear technology.
Date: February 1, 1986
Creator: Park, J. F.
Object Type: Report
System: The UNT Digital Library
Electric energy savings from new technologies. Revision 1 (open access)

Electric energy savings from new technologies. Revision 1

Purpose of the report is to provide information about the electricity-saving potential of new technologies to OCEP that it can use in developing alternative long-term projections of US electricity consumption. Low-, base-, and high-case scenarios of the electricity savings for 10 technologies were prepared. The total projected annual savings for the year 2000 for all 10 technologies were 137 billion kilowatt hours (BkWh), 279 BkWh, and 470 BkWh, respectively, for the three cases. The magnitude of these savings projections can be gauged by comparing them to the Department's reference case projection for the 1985 National Energy Policy Plan. In the Department's reference case, total consumption in 2000 is projected to be 3319 BkWh. Because approximately 75% of the base-case estimate of savings are already incorporated into the reference projection, only 25% of the savings estimated here should be subtracted from the reference projection for analysis purposes.
Date: September 1, 1986
Creator: Harrer, B. J.; Kellogg, M. A.; Lyke, A. J.; Imhoff, K. L. & Fisher, Z. J.
Object Type: Report
System: The UNT Digital Library
Residential solar photovoltaic systems: Final report for the Northeast Residential Experiment Station (open access)

Residential solar photovoltaic systems: Final report for the Northeast Residential Experiment Station

This report covers research and development work conducted by the MIT Energy Lab. from July 1982 through June 1986. This Energy Lab. work in the field of solar photovoltaic systems followed six years of similar work at the MIT Lincoln Lab. under the same contract with the US DOE. The final report from the Lincoln Lab. period was published by Lincoln Lab. in 1983. During the period of Energy Lab. involvement, the project focused on the refinement of residential scale, roof-mounted photovoltaic systems for application in the northeastern US. Concurrent with the conclusion of MIT`s involvement, the New England Electric Co. is building a major field test of residential photovoltaics in Gardner, Massachusetts to determine experimentally the effects of photovoltaics on electric power company operations. Using systems designs and technology developed at MIT, the long-term performance of these thirty residential systems in Gardner will provide a measure of our success.
Date: June 1, 1986
Creator: Kern, E. C. Jr.
Object Type: Report
System: The UNT Digital Library
Example of nuclear data center services for geophysics applications (open access)

Example of nuclear data center services for geophysics applications

A bibliographic survey of the available experimental data on neutron induced gamma-ray production has been made. Use was made of Data Center on-line search and retrieval capabilities. CINDA was searched for prompt gamma-ray production data covering a large incident neutron energy range, and where possible, EXFOR was used to scan the data and select representative works. From the survey it appears that many measurements will have to be supplemented by theoretical calculations. 13 refs., 2 tabs.
Date: January 1, 1986
Creator: Rose, P.; Burrows, T. & Tuli, J.
Object Type: Article
System: The UNT Digital Library
Two-dimensional flux-corrected transport solver for convectively dominated flows (open access)

Two-dimensional flux-corrected transport solver for convectively dominated flows

A numerical technique designed to solve a wide class of convectively dominated flow problems is presented. An attractive feature of the technique is its ability to resolve the behavior of field quantities possessing large gradients and/or shocks. The method is a finite-difference technique known as flux-corrected transport (FCT) that maintains four important numerical considerations - stability, accuracy, monotonicity, and conservation. The theory and methodology of two-dimensional FCT is presented. The method is applied in demonstrative example calculations of a 2-D Riemann problem with known exact solutions and to the Euler equations in a study of classical Rayleigh-Taylor and Kelvin-Helmholtz instability problems. The FCT solver has been vectorized for execution on the Cray 1S - a typical call with a 50 by 50 mesh requires about 0.00428 cpu seconds of execution time per call to the routine. Additionally, we have maintained a modular structure for the solver that eases its implementation. Fortran listings of two versions of the 2-D FCT solvers are appended with a driver main program illustrating the call sequence for the modules. 59 refs., 49 figs.
Date: January 1, 1986
Creator: Baer, M.R. & Gross, R.J.
Object Type: Report
System: The UNT Digital Library
Laser Program annual report, 1985 (open access)

Laser Program annual report, 1985

This volume presents the unclassified activities and accomplishments of the Inertial Confinement Fusion and Advanced Laser Development elements of the Laser Program at the Lawrence Livermore National Laboratory for the calendar year 1985. This report has been organized into major sections that correspond to our principal technical activities. Section 1 provides an overview. Section 2 comprises work in target theory, design, and code development. Target development and fabrication and the related topics in materials science are contained in Section 3. Section 4 presents work in experiments and diagnostics and includes developments in data acquisition and management capabilities. In Section 5 laser system (Nova) operation and maintenance are discussed. Activities related to supporting laser and optical technologies are described in Section 6. Basic laser research and development is reported in Section 7. Section 8 contains the results of studies in ICF applications where the work reported deals principally with the production of electric power with ICF. Finally, Section 9 is a comprehensive discussion of work to date on solid state lasers for average power applications. Individual sections, two through nine, have been cataloged separately.
Date: November 1, 1986
Creator: Rufer, M.L. & Murphy, P.W. (eds.)
Object Type: Report
System: The UNT Digital Library
Energy storage transformer power conditioning systems for Megajoule class flux compression generators (open access)

Energy storage transformer power conditioning systems for Megajoule class flux compression generators

Circuit and energy storage transformer configurations are developed to match high impedance loads to low impedance sources. With the secondary open, a large di/dt is produced in the primary circuit by inserting a resistance, characteristic of an opening switch, and the load circuit is connected using a preset spark gap. Transformer design concepts using a foil-MYLAR ''sandwich'' for the secondary winding are described, permitting close primary-secondary coupling. Transformer experiments driven by a 0.25 MJ capacitor bank support the overall system concepts. A compact flux compression generator-transformer system is described.
Date: January 1, 1986
Creator: Reinovsky, R. E.; Colclaser, R. G.; Welby, J. M. & Lopez, E. A.
Object Type: Article
System: The UNT Digital Library
Fusion Energy Division annual progress report, period ending December 31, 1985 (open access)

Fusion Energy Division annual progress report, period ending December 31, 1985

Separate abstracts were prepared for nine of the included sections. (MOW)
Date: July 1, 1986
Creator: Morgan, O. B., Jr.; Berry, L. A. & Sheffield, J.
Object Type: Report
System: The UNT Digital Library
OncoLog, Volume 31, Number 4, October-December 1986 (open access)

OncoLog, Volume 31, Number 4, October-December 1986

Quarterly newsletter from the University of Texas System Cancer Center, M.D. Anderson Hospital and Tumor Institute discussing cancer care and research to inform physicians.
Date: October 1986
Creator: M.D. Anderson Hospital and Tumor Institute
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Computer control and data acquisition system for the R. F. Test Facility (open access)

Computer control and data acquisition system for the R. F. Test Facility

The Radio Frequency Test Facility (RFTF) at Oak Ridge National Laboratory, used to test and evaluate high-power ion cyclotron resonance heating (ICRH) systems and components, is monitored and controlled by a multicomponent computer system. This data acquisition and control system consists of three major hardware elements: (1) an Allen-Bradley PLC-3 programmable controller; (2) a VAX 11/780 computer; and (3) a CAMAC serial highway interface. Operating in LOCAL as well as REMOTE mode, the programmable logic controller (PLC) performs all the control functions of the test facility. The VAX computer acts as the operator's interface to the test facility by providing color mimic panel displays and allowing input via a trackball device. The VAX also provides archiving of trend data acquired by the PLC. Communications between the PLC and the VAX are via the CAMAC serial highway. Details of the hardware, software, and the operation of the system are presented in this paper.
Date: January 1, 1986
Creator: Stewart, K. A.; Burris, R. D.; Mankin, J. B. & Thompson, D. H.
Object Type: Article
System: The UNT Digital Library
Mechanical Engineering Department engineering research: Annual report, FY 1986 (open access)

Mechanical Engineering Department engineering research: Annual report, FY 1986

This report provides information on the five areas of research interest in LLNL's Mechanical Engineering Department. In Computer Code Development, a solid geometric modeling program is described. In Dynamic Systems and Control, structure control and structure dynamics are discussed. Fabrication technology involves machine cutting, interferometry, and automated optical component manufacturing. Materials engineering reports on composite material research and measurement of molten metal surface properties. In Nondestructive Evaluation, NMR, CAT, and ultrasound machines are applied to manufacturing processes. A model for underground collapse is developed. Finally, an alternative heat exchanger is investigated for use in a fusion power plant. Separate abstracts were prepared for each of the 13 reports in this publication. (JDH)
Date: December 1, 1986
Creator: Denney, R. M.; Essary, K. L.; Genin, M. S.; Highstone, H. H.; Hymer, J. D. & Taft, S. O. (eds.)
Object Type: Report
System: The UNT Digital Library
Faculty Publications and Artistic Productions 1986 (open access)

Faculty Publications and Artistic Productions 1986

Bibliographic listing of all publications, artistic works, and exhibitions by faculty at Midwestern State University as of 1986, listed alphabetically by name.
Date: 1986
Creator: Midwestern State University (Wichita Falls, Tex.)
Object Type: Book
System: The Portal to Texas History
Bibliographies of Industrial Interest : Thermodynamic Measurements on the Systems CO₂-H₂O, CuCl₂-H₂0,H₂SO₄-H₂O, NH₃-H₂O, H₂S-H₂O, ZnCl₂-H₂Oand H₃PO₄-H₂O (open access)

Bibliographies of Industrial Interest : Thermodynamic Measurements on the Systems CO₂-H₂O, CuCl₂-H₂0,H₂SO₄-H₂O, NH₃-H₂O, H₂S-H₂O, ZnCl₂-H₂Oand H₃PO₄-H₂O

Abstract: Contained herein are bibliographies of Sources of experimental and correlated thermodynamic data for seven binary aqueous mixtures of industrial importance, namely mixtures of CO2, H2S, NH3, H2S0, H3P4, CuCl2 and ZnCl2 with water. The categories of equilibrium data included in the bibliographies are activity and osmotic coefficients, equilibria in solution, enthalpies and heat capacity data, vapor-liquid equilibria, and phase equilibrium data.
Date: September 1986
Creator: Staples, B. R.; Garvin, D.; Smith-Magowan, D.; Jobe, T. L., Jr.; Jackson, C. R.; Wobbeking, T. F. et al.
Object Type: Report
System: The UNT Digital Library