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Reconciliation Report

Description: Reconciliation report with an ending account balance of $1,247.07 reconciled for the period ending on June 28, 2002.
Date: July 14, 2002
Partner: UNT Libraries Special Collections
open access

Evaluation of the Radiochemistry of Near-Field Water Samples at the Nevada Test Site Applied to the Definition of a Hydrologic Source Term

Description: Effective management of available groundwater resources and strategies for remediation of water impacted by past nuclear testing practices depend on knowledge about the migration of radionuclides in groundwater away from the sites of the explosions. A primary concern is to assess the relative mobilities of the different radionuclide species found near sites of underground nuclear tests and to determine the concentration, extent, and speed of this movement. Ultimately the long term transport beh… more
Date: July 5, 2002
Creator: Smith, D K
Partner: UNT Libraries Government Documents Department
open access

Review of Excess Weapons Plutonium Disposition LLNL Contract Work in Russia-(English)

Description: This third meeting of the recently completed and ongoing Russian plutonium immobilization contract work was held at the State Education Center (SEC) in St. Petersburg on January 14-18, 2002. The meeting agenda is reprinted here as Appendix A and the attendance list as Appendix B. The meeting had 58 Russian participants from 21 Russian organizations, including the industrial sites (Mayak, Krasonayarsk-26, Tomsk), scientific institutes (VNIINM, KRI, VNIPIPT, RIAR), design organizations (VNIPIET a… more
Date: July 11, 2002
Creator: Jardine, L & Borisov, G B
Partner: UNT Libraries Government Documents Department
open access

Safety Report for Raman Spectroscopy: Safety Evaluation and Search Algorithm Enhancement

Description: This study determines safety hazards associated with using a 300-mW 785-nm near-IR Raman laser for sample analysis. Most safety concerns are associated with excessive sample heating resulting from sample illumination. Thermography experiments were designed to quantitatively assess which visible surface colors heat most when exposed to the Raman laser. Temperatures achieved after illuminating 216 color patches with the unfocussed laser are presented. Figures contained in this report allow a fiel… more
Date: July 5, 2002
Creator: Harvey, Scott D. & Wright, Bob W.
Partner: UNT Libraries Government Documents Department
open access

Efficiency of Scintillator Materials in the Energy Range 8.0-32.0 keV

Description: X-ray microtomography requires the measurement of x-ray attenuation along ray paths through a specimen, and on the inversion of these data to obtain a spatially resolved mapping of the microstructure of the specimen. To do this efficiently, two-dimensional array detectors are often used to measure the transmitted x-rays by capturing and recording each x-ray incident on the detector. The highest resolution CT instruments perform this by converting the incident x-rays to visible light, and then f… more
Date: July 1, 2002
Creator: Kinney, J H & Haupt, D L
Partner: UNT Libraries Government Documents Department
open access

Engineering Technology Reports, Volume 2: Technology Base FY01

Description: Engineering has touched on every challenge, every accomplishment, and every endeavor of Lawrence Livermore National Laboratory during its fifty-year history. In this time of transition to new leadership, Engineering continues to be central to the mission of the Laboratory, returning to the tradition and core values of E.O. Lawrence: science-based engineering--turning scientific concepts into reality. This volume of Engineering Technical Reports summarizes progress on the projects funded for tec… more
Date: July 1, 2002
Creator: Minichino, C & Meeker, D
Partner: UNT Libraries Government Documents Department
open access

Solution Based Deposition of Polyimide Ablators for NIF Capsules

Description: Between June 1997 and March 2002 Luxel Corporation was contracted to explore the possibility of preparing NIF scale capsules with polyimide ablators using solution-based techniques. This work offered a potential alternative to a vapor deposition approach talking place at LLNL. The motivation for pursuing the solution-based approach was primarily two-fold. First, it was expected that much higher strength capsules (relative to vapor deposition) could be prepared since the solution precursors were… more
Date: July 11, 2002
Creator: Cook, R
Partner: UNT Libraries Government Documents Department
open access

Laminar Validation Cases for the Incompressible Flow Model in ALE3D

Description: To benchmark the incompressible flow model in ALE3D, two test cases are conducted. The first case of two-dimensional flow over a flat plate is selected because it provides a straightforward example to determine whether or not ALE3D can grow a boundary layer by viscous diffusion. The benefit of the flat plate problem is that under certain conditions, the governing Navier-Stokes equations can be simplified and solved with numerical techniques, providing an independent result that can be compared … more
Date: July 16, 2002
Creator: Ortega, J
Partner: UNT Libraries Government Documents Department
open access

Determination of Swimming Speeds and Energetic Demands of Upriver Migrating Fall Chinook Salmon (Oncorhynchus tshawytscha) in the Klickitat River, Washington

Description: This report describes a field study by PNNL for Bonneville Power Administration in fall 2001 to study the migration and energy use of adult fall chinook salmon traveling up the Klickitat River to spawn. The salmon were tagged with surgically implanted electromyogram transmitters or gastrically implanted coded transmitters. Swim speed and aerobic and anaerobic energy use were determined for the fish as they attempted to pass three waterfalls on the lower Klickitat and as they traversed free-flow… more
Date: July 1, 2002
Creator: Brown, Richard S. & Geist, David R.
Partner: UNT Libraries Government Documents Department
open access

Perspectives on Pentaerythritol Tetranitrate (PETN) Decomposition

Description: This report evaluates the large body of work involving the decomposition of PETN and identifies the major decomposition routes and byproducts. From these studies it becomes apparent that the PETN decomposition mechanisms and the resulting byproducts are primarily determined by the chemical environment. In the absence of water, PETN can decompose through the scission of the O-NO{sup 2} bond resulting in the formation of an alkoxy radical and NO{sub 2}. Because of the relatively high reactivity o… more
Date: July 1, 2002
Creator: Chambers, D; Brackett, C & Sparkman, D O
Partner: UNT Libraries Government Documents Department
open access

High-Efficiency Steam Electrolyzer

Description: We are developing a novel high-efficiency, high-temperature steam electrolyzer. Although water or steam electrolysis is well known to be one of the cleanest ways to produce hydrogen, widespread utilization is hindered by high operational costs because of high electricity consumption. To decrease the electrical power input requirements in electrolysis, our approach uses natural gas as an anode depolarizer. This approach essentially replaces one unit of electricity with one equivalent-energy unit… more
Date: July 3, 2002
Creator: Pham, A. Q.; See, E.; Lenz, D.; Martin, P. & Glass, R.
Partner: UNT Libraries Government Documents Department
open access

Secure, Transportable, Autonomous Reactor (STAR) Concept

Description: The Secure, Transportable, Autonomous Reactor (STAR), is a concept for a small, highly proliferation resistant, sealed-core nuclear power system with unique design features that make it appropriate for a variety of applications. STAR features include: Long lifetime sealed core installed at construction; 10 to 30 year core life, depending on design and size; No capability for on-site refueling, no user access to the fuel, no need for user to have fuel cycle technology; Reactor transported intact… more
Date: July 1, 2002
Creator: Chou, C K; Smith, C F; Brown, N W; Hassberger, J A & Halsey
Partner: UNT Libraries Government Documents Department
open access

Low Cost Glass and Glass-Ceramic Substrates for Thin-Film Silicon Solar Cells: Final Subcontract Report, 25 January 2001

Description: This report describes how Cornell University researchers developed several low-cost and simple barrier layers and tested their effectiveness both analytically (by SIMS) and by evaluating the electrical characteristics of devices fabricated on barrier-coated substrates. Devices fabricated included both majority-carrier devices (thin-film transistors) and minority-carrier devices (p-i-n junction diodes simulating solar cells) using various deposition techniques including the chemical vapor deposi… more
Date: July 1, 2002
Creator: Ast, D.; Nemchuk, N. & Krasula, S.
Partner: UNT Libraries Government Documents Department
open access

Review of Mid- to High-Temperature Solar Selective Absorber Materials

Description: This report describes the concentrating solar power (CSP) systems using solar absorbers to convert concentrated sunlight to thermal electric power. It is possible to achieve solar absorber surfaces for efficient photothermal conversion having high solar absorptance (a) for solar radiation and a low thermal emittance (e) at the operational temperature. A low reflectance (?'' 0) at wavelengths (?) 3 mm and a high reflectance (?'' 1) at l 3 mm characterize spectrally selective surfaces. The operat… more
Date: July 1, 2002
Creator: Kennedy, C. E.
Partner: UNT Libraries Government Documents Department
open access

Evaluation of the Potential for the Production of Lignocellulosic Based Ethanol at Existing Corn Ethanol Facilities: Final Subcontract Report, 2 March 2000 - 30 March 2002

Description: Subcontract report on opportunities to explore the business potential provided by converting biomass to products such as ethanol. The goals of this study were: (1) To provide the opportunity to explore the business potential provided by converting biomass to products such as ethanol. (2) To take advantage of the grain-processing infrastructure by investigating the co-location of additional biomass conversion facilities at an existing plant site.
Date: July 1, 2002
Partner: UNT Libraries Government Documents Department
open access

Zero Temperature Hope Calculations

Description: The primary purpose of the HOPE code is to calculate opacities over a wide temperature and density range. It can also produce equation of state (EOS) data. Since the experimental data at the high temperature region are scarce, comparisons of predictions with the ample zero temperature data provide a valuable physics check of the code. In this report we show a selected few examples across the periodic table. Below we give a brief general information about the physics of the HOPE code. The HOPE c… more
Date: July 26, 2002
Creator: Rozsnyai, Balazs F.
Partner: UNT Libraries Government Documents Department
open access

Summary of Chariton Valley Switchgrass Co-Fire Testing at the Ottumwa Generating Station in Chillicothe, Iowa: Milestone Completion Report

Description: Results of the switchgrass co-firing tests conducted at the Ottumwa Generating Station in Chillicothe, Iowa as part of the Chariton Valley Biomass Project. After several years of planning, the Chariton Valley Biomass Project successfully completed two months of switchgrass co-fire testing at the Ottumwa Generating Station (OGS) in Chillicothe, Iowa. From November 30, 2000, through January 25, 2001, the switchgrass team co-fired 1,269 tons (1,151 tonnes) of switchgrass at rates up to 16.8 tons/h… more
Date: July 1, 2002
Creator: Amos, W.
Partner: UNT Libraries Government Documents Department
open access

Longevity Tests of High-Sensitivity BD-PND Bubble Dosimeters

Description: Medium- and very-high-sensitivity neutron bubble dosimeters (BD-PNDs) made by Bubble Technology Industries (BTI) were used to study the life span of such dosimeters in a standard setup with a {sup 252}Cf source. Although data on the longevity of bubble dosimeters with low and medium sensitivity exist, such data for dosimeters with high and very high sensitivity are not readily available. The manufacturer guarantees optimum dosimeter performance for 3 months after receipt. However, it is importa… more
Date: July 9, 2002
Creator: Radev, R & Carlberg, E
Partner: UNT Libraries Government Documents Department
open access

Impact of 2003 Building Technology, State and Community Programs on United States Employment and Earned Income

Description: As part of measuring the impact of government programs for improving the energy efficiency of the nation's building stock, this report uses the ImBuild II model to assess the future economic impacts of Department of Energy Office of Building Technology, State and Community Programs (BTS) FY 2003 portfolio of programs, specifically the potential impact on national employment and income. The energy savings expected to be created by market penetration of the BTS programs have the potential of crea… more
Date: July 8, 2002
Creator: Scott, Michael J.; Hostick, Donna J. & Elliott, Douglas B.
Partner: UNT Libraries Government Documents Department
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Verification& Validation (V&V) Guidelines and Quantitative Reliability at Confidence (QRC): Basis for an Investment Strategy

Description: This paper represents an attempt to summarize our thoughts regarding various methods and potential guidelines for Verification and Validation (V&V) and Uncertainty Quantification (UQ) that we have observed within the broader V&V community or generated ourselves. Our goals are to evaluate these various methods, to apply them to computational simulation analyses, and integrate them into methods for Quantitative Certification techniques for the nuclear stockpile. We describe the critical nature of… more
Date: July 17, 2002
Creator: Logan, R W & Nitta, C K
Partner: UNT Libraries Government Documents Department
open access

National NIF Diagnostic Program Fiscal Year 2002 Third Quarter Report

Description: Since October 2001, the development of the facility diagnostics for NIF has been funded by the NIF Director through the National NIF Diagnostic Program (NNDP). The current emphasis of the NNDP is on diagnostics for the early NIF quad scheduled to be available for experiment commissioning in FY03. During the past nine months, the NNDP has set in place processes for funding diagnostics, developing requirements for diagnostics, design reviews, and monthly status reporting. Work has been funded at … more
Date: July 1, 2002
Creator: MacGowan, B
Partner: UNT Libraries Government Documents Department
open access

Identifying Electronic Properties Relevant to Improving the Performance and Stability of Amorphous Silicon Based Mid-Gap and Low-Gap Cells: Final Subcontract Report, 16 January 1998-15 October 2001

Description: This report describes our experimental studies which have been concentrated in roughly five areas. Specifically: (1) We have examined a?Si:H grown very close to the microcrystalline phase boundary, so-called''edge material,'' to help understand why such material is more stable with respect to light-induced degradation; (2) We have also studied the electronic properties, and degradation characteristics of mixed phase material that is mostly a?Si:H, but which contains a significant microcrystalli… more
Date: July 1, 2002
Creator: Cohen, J. D.
Partner: UNT Libraries Government Documents Department
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