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Chemical Processing Department Monthly Report
11
Federal Emergency Management Information System (FEMIS)
3
Hanford Works Monthly Report
3
Proceedings of the Workshop on Geothermal Reservoir Engineering
3
Fiscal Year 1997
2
Fiscal Year 2005
2
Fiscal Year 2006
2
Fiscal Year 2008
2
Irradiation Processing Department Monthly Record Report
2
Mound Laboratory Monthly Health Information Report
2
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Semirelativistic constituent-quark model with goldstone-boson-exchange hyperfine interactions.
We address the semirelativistic constituent-quark model with linear confinement and a hyperfine interaction deduced from Goldstone-boson exchange. In the version where the latter is represented by pseudoscalar meson exchange ({pi}, K, {eta}, {eta}{prime})and restricted to the spin-spin component only a unified description of all light- and strange-baryon spectra is provided in close agreement with phenomenology. We discuss the extension of the model that includes also the tensor components of the pseudoscalar meson exchange and in addition vector-meson ({rho}, {omega}, K*, {phi}) and scalar-meson ({sigma}) exchanges. A preliminary version thereof provides a description of the baryon spectra with similar good quality.
Date:
October 20, 1998
Creator:
Wagenbrunn, R. F.
Object Type:
Article
System:
The UNT Digital Library
HLW Tank Space Management, Final Report
The HLW Tank Space Management Team (SM Team) was chartered to select and recommend an HLW Tank Space Management Strategy (Strategy) for the HLW Management Division of Westinghouse Savannah River Co. (WSRC) until an alternative salt disposition process is operational. Because the alternative salt disposition process will not be available to remove soluble radionuclides in HLW until 2009, the selected Strategy must assure that it safely receives and stores HLW at least until 2009 while continuing to supply sludge slurry to the DWPF vitrification process.
Date:
September 20, 1999
Creator:
Miller, M. S.; Abell, G.; Garrett, R.; D'Entremont, P.; Fowler, J. R.; Mahoney, M. et al.
Object Type:
Report
System:
The UNT Digital Library
Numerical Modeling of Coupled Variably-Saturated Fluid Flow and Reactive Transport with Fast and Slow Chemical Reactions
The couplings among chemical reaction rates, advective and diffusive transport in fractured media or soils, and changes in hydraulic properties due to precipitation and dissolution within fractures and in rock matrix are important for both nuclear waste disposal and remediation of contaminated sites. This paper describes the development and application of LEHGC2.0, a mechanistically-based numerical model for simulation of coupled fluid flow and reactive chemical transport including both fast and slow reactions invariably saturated media. Theoretical bases and numerical implementations are summarized, and two example problems are demonstrated. The first example deals with the effect of precipitation-dissolution on fluid flow and matrix diffusion in a two-dimensional fractured media. Because of the precipitation and decreased diffusion of solute from the fracture into the matrix, retardation in the fractured medium is not as large as the case wherein interactions between chemical reactions and transport are not considered. The second example focuses on a complicated but realistic advective-dispersive-reactive transport problem. This example exemplifies the need for innovative numerical algorithms to solve problems involving stiff geochemical reactions.
Date:
September 20, 1999
Creator:
LI, MING-HSU; SIEGEL, MALCOLM D. & YEH, GOUR-TSYH (GEORGE)
Object Type:
Article
System:
The UNT Digital Library
Effect of single dose x-ray to the nail fold area of human subjects
In order to further understand the nature of changes which occur in the fingers of persons occupationally exposed to radiation a series of experiments were performed on human subjects generally using x-rays at 130 KV potential, 20 ma and at a distance of 10 cm. Doses ranged from 200-600 r. Fourteen subjects were patients being treated by x-rays or radium for other purposes. The other subject was a staff member who occasionally prepared radium plaques containing 130 mgm of radium. Counts were made of the number of vessels in the terminal row of a measured area of the nail fold. In no case was there any detectable change in the nail fold area within 15 minutes of treatment. Observations were continued for up to 56 days and changes observed included hyperemia, pigmentation, erythemia, and some transitory changes in vascular structure of the affected area. A recommendation for continued studies is made.
Date:
June 20, 1947
Creator:
Nickson, M.
Object Type:
Report
System:
The UNT Digital Library
Bipolaron Hopping Conduction in Boron Carbides
The electrical conductivities of boron carbides, B{sub 12+x}C{sub 3{minus}x} with 0.1 < x < 1.7, between 300 and 1200K suggest the hopping of a nearly temperature-independent density of small (bi)polarons. The activation energies of the nobilities are low, {approx} 0.16 eV, and are nearly independent of the composition. At lower temperatures, conductivities have non-Arrhenius temperature dependencies and strong sensitivity to carbon concentration. Percolative aspects of low-temperature hopping are evident in this sensitivity to composition. Boron carbides' Seebeck coefficients are anomalous in that (1) they are much larger than expected from boron carbides' large carrier densities and (2) they depend only weakly on the carrier density. Carrier-induced softening of local vibrations gives contributions to the Seebeck coefficient that mirror the magnitudes and temperature dependencies found in boron carbides.
Date:
September 20, 1999
Creator:
ASELAGE, TERRENCE L.; EMIN, D. & MCCREADY, STEVEN S.
Object Type:
Article
System:
The UNT Digital Library
A study of multistage/multifraction column for fine particle separation. Quarterly technical progress report, second quarter April 1995--July 1995
The overall objective of the proposed research program is to explore the potential application of a new invention involving a multistage column equipped with vortex-inducing loop-flow contactors (hereafter referred to as the multistage column) for fine coal cleaning process. The research work will identify the design parameters and their effects on the performance of the separation process. The results of this study will provide an engineering basis for further development of this technology in coal cleaning and in the general areas of fluid/particle separation. In the first year of the project, we completed equipment design, construction of the new column for hydrodynamic tests and gas holdup measurements. Also, we have initiated the determination of bubble size as part of the hydrodynamic measurements.
Date:
July 20, 1995
Creator:
Chiang, S. H.
Object Type:
Report
System:
The UNT Digital Library
Well Installation and Sampling Report for Monitoring Wells TCM6 TCM7, and TNX 28D - 40D and GeoSiphon Cell TGSC-2
The shallow groundwater and sediments beneath the TNX Area are contaminated with both dissolved and residual chlorinated volatile organic compounds (CVOCs) such as trichloroethylene (TCE), carbon tetrachloride and perchloroethylene (PCE). The Savannah River Technology Center (SRTC) is studying a new technology for remediating CVOCs known as GeoSiphon.
Date:
September 20, 1999
Creator:
Nichols, R. L.; Dixon, K. L. & Noonkester, J. V.
Object Type:
Report
System:
The UNT Digital Library
Inhomogeneous primordial nucleosynthesis and new abundance constraints on {Omega}{sub b}h{sup 2}
We discuss the upper limit to the baryonic contribution to the closure density. We consider effects of new observational and theoretical uncertainties in the primordial light element abundances, and the effects of fluctuation geometry on the inhomogeneous nucleosynthesis yields. We also consider implications of the possible detection of a high D/H abundance in a Lyman-{alpha} absorption cloud at high redshift and the implied chemical evolution effects of a high deuterium abundance. We show that there exists a region of the parameter space for inhomogeneous models in which a somewhat higher baryonic contribution to the closure density is possible than that allowed in standard homogeneous models. This result is contrary to some other recent studies and is due to both geometry and recently revised uncertainties in primordial light-element abundances, particularly {sup 7}Li. We find that the presently adopted abundance constraints are consistent with a contribution of baryons to the closure density as high as {Omega}{sub b}h{sub 50}{sup 2} {le} 0.11 ({eta} {le} 7 {times} 10{sup {minus}10}). This corresponds to a 20% increase over the limit from standard homogeneous models ({Omega}{sub b}h{sub 50}{sup 2} {le} 0.08, {eta} {le} 5.8 {times} 10{sup {minus}10}). With a high deuterium abundance the upper limits for the …
Date:
July 20, 1995
Creator:
Mathews, G. J.; Kajino, T. & Orito, M.
Object Type:
Report
System:
The UNT Digital Library
The DOE Knowledge Base Mthodology for the Creation of an Optimal Spatial Tessellation
The DOE Knowledge Base is a library of detailed information whose purpose is to improve the capability of the United States National Data Center (USNDC) to monitor compliance with the Comprehensive Test Ban Treaty (CTBT). Much of the data contained by the Knowledge Base is spatial in nature, and some of it is used to improve the accuracy with which seismic locations are determined while maintaining or improving current calculational perfor- mance. In this presentation, we define and describe the methodology used to create spatial tessellations of seismic data which are utilized with a gradient-modified natural-neighbor interpolation method to evaluate travel-time corrections. The goal is to interpolate a specified correction surface, or a group of them, with prescribed accuracy and surface smoothness requirements, while minimizing the number of data points necessary to represent the surface. Maintain- ing accuracy is crucial toward improving the precision of seismic origin location. Minimizing the number of nodes in the tessellation improves calculational and data access efficiency and performance. The process requires two initialization steps and an iterated 7 step algorithm for inserting new tessellation nodes. First, M residual data from ground truth events are included in the tessellation. These data remain fixed throughout the …
Date:
October 20, 1998
Creator:
Hipp, James R.; Moore, Susan G.; Shepherd, Ellen & Young, Chris J
Object Type:
Article
System:
The UNT Digital Library
POLARIZED PROTONS TRACKING IN THE AGS AND RHIC.
A code, SPINK, to track polarized particles in a circular accelerator, in particular RHIC [1], is been used to: find conditions for safely crossing depolarizing resonances, using Siberian Snakes; find the best conditions to match the spin of the injected beam to the ring lattice; study the operation of Spin Rotators and study the beam-beam effects in a polarized proton collider.
Date:
May 20, 1999
Creator:
Luccio, A. U.
Object Type:
Article
System:
The UNT Digital Library
Specification of optical components using the power spectral density function
This paper describes the use of Fourier techniques to characterize the wavefront of optical components, specifically, the use of the power spectral density, (PSD), function. The PSDs of several precision optical components will be shown. Many of the optical components of interest to us have square, rectangular or irregularly shaped apertures with major dimensions up-to 800 mm. The wavefronts of components with non-circular apertures cannot be analyzed with Zernicke polynomials since these functions are an orthogonal set for circular apertures only. Furthermore, Zernicke analysis is limited to treating low frequency wavefront aberrations; mid-spatial scale and high frequency error are expressed only as ``residuals.`` A more complete and powerful representation of the optical wavefront can be obtained by Fourier analysis in 1 or 2 dimensions. The PSD is obtained from the amplitude of frequency components present in the Fourier spectrum. The PSD corresponds to the scattered intensity as a function of scattering angle in the wavefront and can be used to describe the intensity distribution at focus. The shape of a resultant wavefront or the focal spot of a complex multi-component laser system can be calculated and optimized using the PSDs of individual optical components which comprise it.
Date:
June 20, 1995
Creator:
Lawson, J. K.; Wolfe, C. R.; Manes, K. R.; Trenholme, J. B.; Aikens, D. M. & English, R. E., Jr.
Object Type:
Article
System:
The UNT Digital Library
FAA Fluorescent Penetrant Activities - An Update
The Federal Aviation Administration's Airworthiness Assurance NDI Validation Center (AANC) is currently characterizing low cycle fatigue specimens that will support the needs of penetrant manufacturers, commercial airline industry and the Federal Aviation Administration. The main focus of this characterization is to maintain and enhance the evaluation of penetrant inspection materials and apply resources to support the aircraft community needs. This paper discusses efforts to-date to document the Wright Laboratory penetrant evaluation process and characterize penetrant brightness readings in the initial set of sample calibration panels using Type 1 penetrant.
Date:
October 20, 1998
Creator:
Moore, D.G.
Object Type:
Article
System:
The UNT Digital Library
Experimental results of the active deflection of a beam from a kicker system
A high current kicker has been designed and tested on the ETA-II beam line. A bias dipole which surrounds the kicker acts to deflect the beam in the DC mode. High voltage pulsers (10kV) with fast rise times (10ns) are connected to the internal strip lines of the kicker. They are used to manipulate beams dynamically. Camera photos which show the switching of the beam from one position to another will be presented. Beam bug measurements of beam-induced as well as active steering will be shown. These will be compared with theoretical predictions.
Date:
August 20, 1998
Creator:
Yu, J
Object Type:
Article
System:
The UNT Digital Library
Evaluating and managing Cold War era historic properties : the cultural significance of U.S. Air Force defensive radar systems.
Aircraft and later missile radar early warning stations played an important role in the Cold War. They are associated with important technological, social, political, and military themes of the Cold War and are worthy of preservation. The scope and scale of these systems make physical preservation impractical, but the U.S. Air Force program of historical evaluation and documentation of these systems will provide valuable information to future generations studying this historic period.
Date:
January 20, 1999
Creator:
Whorton, M.
Object Type:
Article
System:
The UNT Digital Library
Intelligent Microsystems: Keys to the Next Silicon Revolution
Paul McWhorter, Deputy Director for of the Microsystems Center at Sandia National Laboratories, discusses the potential of surface micromachining. A vision of the possibilities of intelligent Microsystems for the future is presented along with descriptions of several possible applications. Applications that are just around the corner and some that maybe quite a ways down the road but have a clear development path to their realization. Microsystems will drive the next silicon revolution.
Date:
October 20, 1999
Creator:
MCWHORTER,PAUL J.
Object Type:
Article
System:
The UNT Digital Library
Fabrication and characterization of Ag-clad Bi-2223 tapes.
The powder-in-tube (PIT) technique was used to fabricate multifilament (Bi,Pb){sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub y} (Bi-2223) superconducting tapes. Transport current properties of these tapes were enhanced by increasing the packing density of the precursor powder and improving the mechanical deformation condition. A critical current (I{sub c}) of > 35 A in long lengths (> 200 m) tapes has been achieved. In measuring the dependence of critical current density on magnetic field and temperature for the optimally processed tapes, we found a J{sub c} of > 10{sup 4} A/cm{sup 2} at 20 K in magnetic fields up to 3 T and parallel to the c-axis, which is of interest for use in refrigerator-cooled magnets. I{sub c} declined exponentially when an external field was applied perpendicular to the tape surface at 77 K. Mechanical stability was tested for tapes sheathed with pure Ag and Ag-Mg alloy. Tapes made with pure Ag sheathing can withstand a tensile stress of {approx}20 MPa with no detrimental effect on I{sub c} values. Mechanical performance was improved by using Ag-Mg alloy sheathing: values of transport critical current began to decrease at the tensile stress of {approx} 100 MPa. Transport current measurements on tapes wound on a mandrel …
Date:
April 20, 1999
Creator:
Balachandran, U.
Object Type:
Article
System:
The UNT Digital Library
Long-term Operational Experience with the Barrel CRID at SLD
The Barrel CRID detector has been operating successfully at SLD for the past seven years. It is an important tool for SLD physics analyses. The long-term operational experience with this device is described.
Date:
May 20, 1999
Creator:
Va'Vra, Jaroslav
Object Type:
Report
System:
The UNT Digital Library
Preoperational test report, cross-site transfer water flush system (POTP-001)
This report documents the results of the testing performed per POTP-001, for the Cross-Site Transfer Water Flush System. (HNF-1552, Rev. 0) The Flush System consists of a 47,000 gallon tank (302C), a 20 hp pump, two 498kW heaters, a caustic addition pump, various valves, instruments, and piping. The purpose of this system is to provide flush water at 140 F, 140gpm, and pH 11-12 for the Cross-Site Transfer System operation.
Date:
February 20, 1998
Creator:
Parsons, G.L.
Object Type:
Report
System:
The UNT Digital Library
Radiocarbon dating of ancient rock paintings
This report presents progress made on a technique for {sup 14}C dating pictographs. A low-temperature oxygen plasma is used coupled with high-vacuum technologies to selectively remove C-containing material in the paints without contamination from inorganic carbon from rock substrates or accretions.
Date:
June 20, 1995
Creator:
Ilger, W. A.; Hyman, M.; Rowe, M. W. & Southon, J.
Object Type:
Article
System:
The UNT Digital Library
Analysis for Materials Test Reactor (MTR Fuel Assemblies in Dry Storage)
This report documents a creep analysis to estimate the maximum acceptable temperature for spent aluminum clad nuclear fuels in dry storage.
Date:
October 20, 1999
Creator:
Miller, R.F.
Object Type:
Report
System:
The UNT Digital Library
Phase-space quantization of field theory.
In this lecture, a limited introduction of gauge invariance in phase-space is provided, predicated on canonical transformations in quantum phase-space. Exact characteristic trajectories are also specified for the time-propagating Wigner phase-space distribution function: they are especially simple--indeed, classical--for the quantized simple harmonic oscillator. This serves as the underpinning of the field theoretic Wigner functional formulation introduced. Scalar field theory is thus reformulated in terms of distributions in field phase-space. This is a pedagogical selection from work published and reported at the Yukawa Institute Workshop ''Gauge Theory and Integrable Models'', 26-29 January, 1999.
Date:
April 20, 1999
Creator:
Curtright, T. & Zachos, C.
Object Type:
Article
System:
The UNT Digital Library
A Thermal Conduction Analysis of Proposed Lateral and Downstream Row 1 Module Plate Designs
The cavity flood system is designed to be the primary safeguard for the integrity of the blanket modules during loss of coolant accidents (LOCAs). In the unlikely event that the internal flow passages in a module dryout, decay heat in the metal structures will be dissipated to the cavity flood system through the module walls. There is a design proposal under consideration to utilize a single 7.5 inch plate design in the APT blanket lateral modules. Currently, the lateral and downstream row 1 modules are designed with 4.0 inch plates, and longer plates are utilized in the lower power outer row modules. There are many benefits (e.g., fabrication costs, assemblage error reductions) to having a single plate design. The purpose of this study is to determine if the longer plate design meets the safety criterion that, when a module is internally dry, it can be adequately cooled by the cavity flood system.
Date:
September 20, 1999
Creator:
Shadday, M.A.
Object Type:
Report
System:
The UNT Digital Library
Graphite Isotope Ratio Method Development Report: Irradiation Test Demonstration of Uranium as a Low Fluence Indicator
This report describes an irradiation test designed to investigate the suitability of uranium as a graphite isotope ratio method (GIRM) low fluence indicator. GIRM is a demonstrated concept that gives a graphite-moderated reactor's lifetime production based on measuring changes in the isotopic ratio of elements known to exist in trace quantities within reactor-grade graphite. Appendix I of this report provides a tutorial on the GIRM concept.
Date:
October 20, 1999
Creator:
Reid, B. D.; Gerlach, D. C.; Love, E. F.; McNeece, J. P.; Livingston, J. V.; Greenwood, L. R. et al.
Object Type:
Report
System:
The UNT Digital Library
High-resolution wavefront control using liquid crystal spatial light modulators
Liquid crystal spatial light modulator technology appropriate for high-resolution wavefront control has recently become commercially available. Some of these devices have several hundred thousand controllable degrees of freedom, more than two orders of magnitude greater than the largest conventional deformable mirror. We will present results of experiments to characterize the optical properties of these devices and to utilize them to correct aberrations in an optical system. We will also present application scenarios for these devices in high-power laser systems.
Date:
July 20, 1999
Creator:
Bauman, B. J.; Brase, J. M.; Brown, C. G.; Cooke, J. B.; Kartz, M. W.; Olivier, S. S. et al.
Object Type:
Article
System:
The UNT Digital Library