Project W-320, 241-C-106 sluicing: Civil/structural calculations. Volume 5 (open access)

Project W-320, 241-C-106 sluicing: Civil/structural calculations. Volume 5

This supporting document has been prepared to make the FDNW calculations for Project W-320 readily retrievable.
Date: July 24, 1998
Creator: Bailey, J. W.
Object Type: Report
System: The UNT Digital Library
Work performed by OHC for PHMC -- Work order process for HANDI 2000 business management system (open access)

Work performed by OHC for PHMC -- Work order process for HANDI 2000 business management system

OHC [Other Hanford Contractors] include: Bechtel Hanford, Pacific Northwest National Laboratories, and Hanford Environmental Health Foundation. PHMC includes: Primary Contractor: Fluor Daniel Hanford; and Subcontractors: Lockheed Martin Hanford Corporation, DynCorp Tri-Cities Services, Inc., Duke Engineering and Services Hanford, Inc., Waste Management Services of Hanford, Inc., Babcock and Wilcox Hanford Company, and Numatec Hanford Corporation.
Date: August 24, 1998
Creator: Wilson, D.
Object Type: Report
System: The UNT Digital Library
Fiscal year 1998 memorandum of understanding for the TWRS characterization project (open access)

Fiscal year 1998 memorandum of understanding for the TWRS characterization project

During fiscal year 1998, the level of success achieved by the Tank Waste Remediation System (TWRS) shall be determined by specific performance measures. These measures take the form of significant deliverables, one of which is the completion of Tank Characterization Reports (TCRs). In order to achieve success regarding the TCR performance deliverable, multiple organizations across TWRS must work together. Therefore, the requirements and expectations needed from each of these TWRS organizations were examined in order to gain an understanding of the performance necessary from each organization to achieve the end deliverable. This memorandum of understanding (MOU) documents the results of this review and establishes the performance criteria by which TWRS will assess its progress and success. These criteria have been determined based upon a TWRS Characterization Project budget of $47.5 million for fiscal year 1998; if this budget is changed or the currently identified work scope is modified, this MOU will need to be revised accordingly. This MOU is subdivided into six sections, where sections three through six each identify individual interfaces between TWRS organizations. The specific performance criteria related to each TWRS organizational interface are then delineated in the section, along with any additional goals or issues pertaining to …
Date: March 24, 1998
Creator: Schreiber, R. D.
Object Type: Report
System: The UNT Digital Library
Low level absorptance measurements and scans of high performance optical coatings for atomic vapor laser isotope separation applications (open access)

Low level absorptance measurements and scans of high performance optical coatings for atomic vapor laser isotope separation applications

A surface thermal lensing and a radiometric technique was used to characterize the absorptance dependence on time, power, site, and technique of low absorptance optical multilayered coatings.
Date: January 24, 1998
Creator: Chow, R.; Taylor, J. R.; Wu, Z. L.; Krupka, R. & Yang, T.
Object Type: Article
System: The UNT Digital Library
Uranium (VI) Sorption and Transport in Unsaturated, Subsurface Hanford Site Sediments - Effect of Moisture Content and Sediment Texture: Final Report for Subtask 2b (open access)

Uranium (VI) Sorption and Transport in Unsaturated, Subsurface Hanford Site Sediments - Effect of Moisture Content and Sediment Texture: Final Report for Subtask 2b

A series of experiments were conducted in fiscal year 1998 at the Pacific Northwest National Laboratory as part of the Immobilized Low-Activity Waste-Performance Assessment. These experiments evaluated the sorption and transport of uranium, U(VI), under conditions of partial moisture saturation that are relevant to arid region burial sites and vadose-zone far-field conditions at the Hanford Site. The focus was on measuring breakthrough curves (from which distribution coefficient [K{sub d}] values can be calculated) for U(W) in three Hanford Site sediments that represent different texture classes in two unsaturated moisture conditions. Previous research showed that K{sub d} values measured during transport in unsaturated sediments varied with moisture saturation.
Date: November 24, 1998
Creator: Gamerdinger, A.P.; Resch, C.T. & Kaplan, D.I.
Object Type: Report
System: The UNT Digital Library
Ethanol Demand in United States Gasoline Production (open access)

Ethanol Demand in United States Gasoline Production

The Oak Ridge National Laboratory (OWL) Refinery Yield Model (RYM) has been used to estimate the demand for ethanol in U.S. gasoline production in year 2010. Study cases examine ethanol demand with variations in world oil price, cost of competing oxygenate, ethanol value, and gasoline specifications. For combined-regions outside California summer ethanol demand is dominated by conventional gasoline (CG) because the premised share of reformulated gasoline (RFG) production is relatively low and because CG offers greater flexibility for blending high vapor pressure components like ethanol. Vapor pressure advantages disappear for winter CG, but total ethanol used in winter RFG remains low because of the low RFG production share. In California, relatively less ethanol is used in CG because the RFG production share is very high. During the winter in California, there is a significant increase in use of ethanol in RFG, as ethanol displaces lower-vapor-pressure ethers. Estimated U.S. ethanol demand is a function of the refiner value of ethanol. For example, ethanol demand for reference conditions in year 2010 is 2 billion gallons per year (BGY) at a refiner value of $1.00 per gallon (1996 dollars), and 9 BGY at a refiner value of $0.60 per gallon. Ethanol demand could …
Date: November 24, 1998
Creator: Hadder, G.R.
Object Type: Report
System: The UNT Digital Library
Chemical Kinetics for Modeling Silicon Epitaxy from Chlorosilanes (open access)

Chemical Kinetics for Modeling Silicon Epitaxy from Chlorosilanes

A reaction mechanism has been developed that describes the gas-phas 0971 and surface reactions involved in the chemical vapor deposition of Si from chlorosilanes. Good agreement with deposition rate data from a single wafer reactor with no wafer rotation has been attained over a range of gas mixtures, total flow rates, and reactor temperatures.
Date: November 24, 1998
Creator: Balakrishna, A.; Chacin, J.M.; Comita, P.B.; Haas, B.; Ho, P. & Thilderkvist, A.
Object Type: Article
System: The UNT Digital Library
Effects of Hydrogen Implantation into GaN (open access)

Effects of Hydrogen Implantation into GaN

Proton implantation in GaN is found to reduce the free carrier density through two mechanisms - first, by creating electron and hole traps at around Ec-0.8eV and Ev+0.9eV that lead to compensation in both n- and p-type material, and second, by leading to formation of (AH)O complexes, where A is any acceptor (Mg, Ca, Zn, Be, Cd). The former mechanism is usefid in creating high resistivity regions for device isolation, whereas the latter produces unintentional acceptor passivation that is detrimental to device performance. The strong affinity of hydrogen for acceptors leads to markedly different redistribution behavior for implanted in n- and p-GaN due to the chemical reaction to form neutral complexes in the latter. The acceptors may be reactivated by simple annealing at 2600{degrees}C, or by electron injection at 25-150{degrees}C that produces debonding of the (AH) centers. Implanted hydrogen is also strongly attracted to regions of strain in heterostructure samples during annealing, leading to pile-up at epi-epi and epi-substrate interfaces. II? spectroscopy shows that implanted hydrogen also decorates VG, defects in undoped and n-GaN.
Date: December 24, 1998
Creator: Abernathy, C.R.; Han, J.; Pearton, S.J.; Shul, R.J.; Song, C.Y.; Stavola, M. et al.
Object Type: Article
System: The UNT Digital Library
Advanced Diagnostics for Developing High-Brightness Electron Beams (open access)

Advanced Diagnostics for Developing High-Brightness Electron Beams

The production of high-brightness particle beams calls for the development of advanced beam diagnostics. High brightness beams, meaning beams with a high density in phase space, are important for many applications, such as short-wavelength Free-Electron Lasers and advanced accelerator systems. A diagnostic that provides detailed information on the density distribution of the electron bunch in multi-dimensional phase-space is an essential tool for obtaining small emittance at a high charge. This diagnostic system has been developed at Brookhaven National Laboratory. One component of the system is the measurement of a slice emittance which provides a measurement of transverse beam properties (such as emittance) as a function of the longitudinal position. Changing the laser pulse profile of a photocathode RF gun has been suggested as one way to achieve non-linear emittance compensation and improve the brightness and that can be diagnosed by the slice emittance system. The other element of the diagnostic is the tomographic reconstruction of the transverse phase. In our work we give special attention to the accuracy of the phase space reconstruction and present an analysis using a transport line with nine focusing magnets and techniques to control the optical functions and phases. This high precision phase space tomography …
Date: November 24, 1998
Creator: Ben-Zvi, Ilan; Babzien, M.; Malone, R.; Wang, X. J. & Yakimenko, V.
Object Type: Article
System: The UNT Digital Library
Magnetic domain structure and magnetization reversal in submicron-scale Co dots (open access)

Magnetic domain structure and magnetization reversal in submicron-scale Co dots

We present a magnetic force microscopy (MFM) analysis of arrays of submicron-scale Co dots fabricated by interference lithography. The dots are thin (180--300 Å) and elliptical in shape. MFM reveals that these structures relax into highly ordered remanent states whose symmetry and configuration are governed by their shape anisotropy. In particular, when the dots are saturated along their long-axis, a uniformly magnetized state persists at remanence. However, when the dots are saturated along their short-axis, they relax into a single-vortex state in which the circulation can have either sign. Both states are characterized by smoothly varying magnetization patterns and a high degree of uniformity across the array. We attribute the ordered behavior of these.structures to the film microstructure, which allows the shape anisotropy to dominate over magnetocrystalline anjsotropy. By imaging a series of minor-loop remanent states, we show that magnetization reversal in these structures occurs via the nucleation and annihilation of a single vortex. Magnetic hysteresis loop measurements are consistent with these observations and provide additional details. Furthermore, we present the results of micromagnetic simulations, which are in excellent agreement with both the MFM images and the hysteresis loop measurements. © 1998 Elsevier Science B.V. All rights reserved.
Date: September 24, 1998
Creator: Cerjan, C J; Fernandez, A; Gibbons, M & Wall, M A
Object Type: Article
System: The UNT Digital Library
Federal Energy Regulatory Commission fiscal year 1997 annual financial statements (open access)

Federal Energy Regulatory Commission fiscal year 1997 annual financial statements

This report presents the results of the independent certified public accountants` audit of the Federal Energy Regulatory commission`s statements of financial position, and the related statements of operations and changes in net position. The auditors` work was conducted in accordance with generally accepted government auditing standards. An independent public accounting firm conducted the audit. The auditors` reports on the Commission`s internal control structure and compliance with laws and regulations disclosed no reportable conditions or instances of noncompliance.
Date: February 24, 1998
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Acceptance test report for portable exhauster POR-007/Skid E (open access)

Acceptance test report for portable exhauster POR-007/Skid E

This document describes Acceptance Testing performed on Portable Exhauster POR-007/Skid E. It includes measurements of bearing vibration levels, pressure decay testing, programmable logic controller interlocks, high vacuum, flow and pressure control functional testing. The purpose of Acceptance testing documented by this report was to demonstrate compliance of the exhausters with the performance criteria established within HNF-0490, Rev. 1 following a repair and upgrade effort at Hanford. In addition, data obtained during this testing is required for the resolution of outstanding Non-conformance Reports (NCR), and finally, to demonstrate the functionality of the associated software for the pressure control and high vacuum exhauster operating modes provided for by W-320. Additional testing not required by the ATP was also performed to assist in the disposition and close out of receiving inspection report and for application design information (system curve). Results of this testing are also captured within this document.
Date: July 24, 1998
Creator: Kriskovich, J.R.
Object Type: Report
System: The UNT Digital Library
SixDOF position sensor: enabling manufacturing flexibility (open access)

SixDOF position sensor: enabling manufacturing flexibility

A small, non-contact optical sensor invented by the author attaches to a robot (or other machines), enabling the robot to detect objects, adjust its alignment in all six degrees of freedom (SixDOF), and read a task from a code on the part. Thus, the SixDOF sensor provides robots more intelligence to operate autonomously and adapt to changes without human intervention. A description of the sensor is provided. Also, an operating arrangement of a robot using the SixDOF sensor is presented with performance results described.
Date: March 24, 1998
Creator: Vann, C.S.
Object Type: Article
System: The UNT Digital Library
Errors associated with standard nodal diffusion methods as applied to mixed oxide fuel problems (open access)

Errors associated with standard nodal diffusion methods as applied to mixed oxide fuel problems

The evaluation of the disposition of plutonium using light water reactors is receiving increased attention. However, mixed-oxide (MOX) fuel assemblies possess much higher absorption and fission cross- sections when compared to standard UO2 assemblies. Those properties yield very high thermal flux gradients at the interfaces between MOX and UO2 assemblies. It has already been reported that standard flux reconstruction methods (that recover the homogeneous intranodal flux shape using the converged nodal solution) yield large errors in the presence of MOX assemblies. In an accompanying paper, we compare diffusion and simplified PN calculations of a mixed-oxide benchmark problem to a reference transport calculation. In this paper, we examine the errors associated with standard nodal diffusion methods when applied to the same benchmark problem. Our results show that a large portion of the error is associated with the quadratic leakage approximation (QLA) that is commonly used in the standard nodal codes.
Date: July 24, 1998
Creator: Brantley, P. S., LLNL
Object Type: Article
System: The UNT Digital Library
Allocations for HANDI 2000 business management system (open access)

Allocations for HANDI 2000 business management system

The Data Integration 2000 Project will result in an integrated and comprehensive set of functional applications containing core information necessary to support the Project Hanford Management Contract. It is based on the Commercial-Off-The-Shelf product solution with commercially proven business processes. The COTS product solution set, of PassPort and People Soft software, supports finance, supply and chemical management/Material Safety Data Sheet, human resources. Allocations at Fluor Daniel Hanford are burdens added to base costs using a predetermined rate.
Date: August 24, 1998
Creator: Wilson, D.
Object Type: Report
System: The UNT Digital Library
The Heisenberg representation of quantum computers (open access)

The Heisenberg representation of quantum computers

Since Shor`s discovery of an algorithm to factor numbers on a quantum computer in polynomial time, quantum computation has become a subject of immense interest. Unfortunately, one of the key features of quantum computers--the difficulty of describing them on classical computers--also makes it difficult to describe and understand precisely what can be done with them. A formalism describing the evolution of operators rather than states has proven extremely fruitful in understanding an important class of quantum operations. States used in error correction and certain communication protocols can be described by their stabilizer, a group of tensor products of Pauli matrices. Even this simple group structure is sufficient to allow a rich range of quantum effects, although it falls short of the full power of quantum computation.
Date: June 24, 1998
Creator: Gottesman, D.
Object Type: Article
System: The UNT Digital Library
Analysis of PEM electrolyzers (open access)

Analysis of PEM electrolyzers

Hydrogen and oxygen can be produced using a PEM electrolyzer. A PEM electrolyzer operates like a fuel cell in reverse. On the anode side of the electrolyzer, electrons are removed from water to form protons and oxygen molecules. The protons are then transported across the membrane. The protons then rejoin with electrons to form hydrogen molecules. In this way water is electrolyzed. In automobiles, the majority of pollutant emissions occur during the start-up of the vehicle. In order to reduce these harmful emissions, a burner will be placed at the end of process to burn off the hydrocarbon emissions. However, this burner must also be hot to completely burn the harmful pollutants. One method of heating this burner quickly is to burn hydrogen before start-up. The burning of the hydrogen will not produce any pollutants. The only products of hydrogen combustion are water and heat. For this reason, a theoretical design of an electrolyzer/burner system was developed.
Date: July 24, 1998
Creator: Knobbe, M. W.
Object Type: Report
System: The UNT Digital Library
Project W-320, 241-C-106 sluicing: Civil/structural calculations. Volume 3 (open access)

Project W-320, 241-C-106 sluicing: Civil/structural calculations. Volume 3

This supporting document has been prepared to make the FDNW civil/structural calculations for Project W-320 readily retrievable. The Equipment Removal System (ERS) has been identified by WHC as not having any safety class 1 items present in the tank pits during equipment removal activities, Documentation of this finding is provided in Letter of Instruction 3/1 Analysis Requirements for Project W-320 Equipment Removal System (REF: LOI KGS-94-013). Based on this specific direction from WHC, 3/1 analysis for any component of the Project W-320 ERS is required. No further documentation of non-safety impacting safety items is required per DOE-RL Audit finding No.90-02, and filing of this memorandum in the W-320 project files satisfies the intent of the referenced DOE observation.
Date: July 24, 1998
Creator: Bailey, J. W.
Object Type: Report
System: The UNT Digital Library
Frequency doubling and tripling of ultrashort laser pulses in biological tissues (open access)

Frequency doubling and tripling of ultrashort laser pulses in biological tissues

Structural proteins such as collagen and elastin are known to generate second harmonic at high laser intensities. Second and third harmonic generations (SHG, THG) of 0.4 ps Ti-Sapphire laser radiation at 800 nm were observed in various biological tissues. Dependence of SHG on laser pulse energy and pulse width was investigated. Reflected second harmonic yield was measured for animal tissue <i>in vitro</i> and human skin <i>in vivo</i>. The yield varies about a factor of 20 for various areas of the skin while the scattered laser radiation (diffuse reflectance) varies only by a factor of 2. In some cases the THG efficiency was comparable to the SHG. Possible applications of higher harmonic radiation for diagnostics and microscopy are discussed.
Date: July 24, 1998
Creator: Da Silva, L. B.; Eichler, J.; Joslin, E. J. & Kim, B. M.
Object Type: Article
System: The UNT Digital Library
Walk-in work for other Hanford contractors for HANDI 2000 business management system (open access)

Walk-in work for other Hanford contractors for HANDI 2000 business management system

Walk-in process is normally used for pool services rendered valuated at standard costs. These services include: Inventory withdrawals from PHMC stores;Training services; DynCorp infrastructure services (road maintenance, dry waste disposal, fleet services); Standards lab calibration services; Locksmith services; and Media services. Walk-in process only applies to PNNL and HEHF. BHI uses the work order process.
Date: August 24, 1998
Creator: Wilson, D.
Object Type: Report
System: The UNT Digital Library
High priority tank sampling and analysis report (open access)

High priority tank sampling and analysis report

In July 1993, the Defense Nuclear Facilities Board issued Recommendation 93-5 (Conway 1993) which noted that there was insufficient tank waste technical information and the pace to obtain it was too slow to ensure that Hanford Site wastes could be safely stored, that associated operations could be conducted safely, and that future disposal data requirements could be met. In response, the US Department of Energy, in May 1996, issued Revision 1 of the Recommendation 93-5 Implementation Plan (DOE-RL 1996). The Implementation Plan presented a modified approach to achieve the original plan`s objectives, concentrating on actions necessary to ensure that wastes can be safely stored, that operations can be safely conducted, and that timely characterization information for the tank waste Disposal Program could be obtained. The Implementation Plan proposed 28 High Priority tanks for near term core sampling and analysis, which along with sampling and analysis of other non-High Priority tanks, could provide the scientific and technical data to confirm assumptions, calibrate models, and.measure safety related phenomenology of the waste. When the analysis results of the High Priority and other-tank sampling were reviewed, it was expected that a series of 12 questions, 9 related to safety issues and 3 related to …
Date: March 24, 1998
Creator: Brown, T.M.
Object Type: Report
System: The UNT Digital Library
Accruals for HANDI 2000 business management system (open access)

Accruals for HANDI 2000 business management system

The Data Integration 2000 Project will result in an integrated and comprehensive set of functional applications containing core information necessary to support the Project Hanford Management Contract. It is based on the Commercial-Off-The-Shelf product solution with commercially proven business processes. The COTS product solution set, of PassPort and People Soft software, supports finance, supply and chemical management/Material Safety Data Sheet, human resources. Accruals are made at the project level. At the inception of each project, Project Management and the Accounts Payable Group make a mutual decision on whether periodic accrual entries should be made for it.
Date: August 24, 1998
Creator: Wilson, D.
Object Type: Report
System: The UNT Digital Library
Optimization of the alignment sensitivity and energy stability of the NIF regenerative amplifier cavity/011 (open access)

Optimization of the alignment sensitivity and energy stability of the NIF regenerative amplifier cavity/011

The work to improve the energy stability of the regenerative amplifier (`regen`) for the National Ignition Facility is described. This includes a fast feed-forward system, designed to regulate the output energy of the regen by monitoring how quickly a pulse builds up over many round trips. Shot-to-shot energy fluctuations of all elements prior to (and including) the regen may be compensated for in this way, at the expense of a loss of approximately 50%. Also included is a detailed study into the alignment sensitivity of the regen cavity, with the goal of quantifying the effect of misalignment on the output energy. This is done by calculating the displacement of the eigenmode by augmenting the cavity ABCD matrix with the misalignment matrix elements, E, F. In this way, cavity misalignment issues due to thermal loading of the gain medium are investigated. Alternative cavity designs, which reduce the alignment sensitivity and therefore the energy drift over periods of continuous operation, are considered. Alterations to the amplifier head design are also considered.
Date: June 24, 1998
Creator: Hopps, N. W., Atomic Weapons Research Establishment, Aldermaston, Great Britain
Object Type: Article
System: The UNT Digital Library
U.S.-Russian experts NATO collaborative research grant exchange visit meeting on excess Pu ceramics formulations and characterizations (open access)

U.S.-Russian experts NATO collaborative research grant exchange visit meeting on excess Pu ceramics formulations and characterizations

This document contains the agenda and meeting notes. Topics of discussion included US Pu disposition ceramics activities, Russian experience and proposals in Pu ceramics, and development of possible Russian ceramic proposals or collaborations.
Date: November 24, 1998
Creator: Jardine, L.J., LLNL
Object Type: Report
System: The UNT Digital Library