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High resolution x-ray crystal spectrographs

Description: Observation of x-ray line emissions are valuable for determining the thermodynamic state of the emitting plasma. For laser produced plasmas, diffraction crystals can be used to isolate x-ray monochromes to obtain high resolution spectral measurements. We will describe a versatile multi-crystal high resolution spectrograph used for photon energies from 0.5 to 6 keV. We will discuss a calculational package that tunes the response and sensitivity of the instrument and estimates the effect of sourc… more
Date: October 21, 1977
Creator: Koppel, L. N. & Eckels, J. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Powerplant Productivity Improvement Study: project summary report

Description: Key findings from the Illinois Powerplant Productivity Improvement Study are: (1) the historic performance (equivalent availability) of large generating units in Illinois is below national average performance; (2) cost-effective opportunities to improve performance exist, and utilities pursue many of these; (3) there are no strong regulatory disincentives to the undertaking of productivity improvement projects, but no strong incentives either; (4) current utility practices, procedures, and mana… more
Date: December 21, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Preliminary planning study for safety relief valve experiments in a Mark III BWR pressure suppression system

Description: In response to a request from the Water Reactor Safety Research Division of the US NRC, a preliminary study is provided which identifies key features and consideration involved in planning a comprehensive in-plant Safety Relief Valve experimental program for a Mark III containment design. The report provides identification of program objectives, measurement system requirements, and some details quantifying expected system response. In addition, a preliminary test matrix is outlined which involv… more
Date: April 21, 1980
Creator: McCauley, E.W. & Holman, G.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Commercialization of a High Energy Neutral Beam Ion Source. Final Report

Description: This final report summarizes the effort and presents the results of a Phase II fabrication effort to build an industrial prototype of the LBL developed high energy neutral beam source. The effort was primarily concentrated on incorporating hard vacuum dielectric seals and a ceramic high voltage accelerator insulator. Several other design changes were incorporated for cost, reliability or life improvements to include: (1) accelerator grid locating dowel pins to aid final alignment, (2) plasma so… more
Date: December 21, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Experimental determination of lower plenum ECC injection effectiveness

Description: The effectiveness of lower plenum emergency core coolant (ECC) injection during a double ended offset shear cold leg break loss-of-coolant accident (LOCA) was investigated experimentally in a small-scale model of a pressurized water reactor (PWR). In order to determine relative merit of the lower plenum injection concept to mitigate the severity of a large break LOCA, data from lower plenum injection experiments were compared to data from an experiment in the Semiscale Mod-3 sytem in which cold… more
Date: November 21, 1980
Creator: Hanson, R.G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Evaluation of refractory materials for a nuclear waste incinerator

Description: An experiment to find a suitable refractory lining for a nuclear waste incinerator has been completed. Eleven brick and six castable products were analyzed by optical and scanning microscopy. All the materials were fashioned into cup shapes and subjected to temperatures ranging from 800 to 1200/sup 0/C for as long as six weeks. Some of the cups were charged weekly with pellets made from ash materials that would contact an incinerator liner. Refractory products containing a high percentage of al… more
Date: July 21, 1980
Creator: Grotzky, V. K.; Kneale, P. A. & Teter, A. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Qualification of tribological materials and coatings for use in sodium. [LMFBR]

Description: This paper describes some of the essential performance measures used to qualify materials for tribological applications in liquid sodium environments and summarizes relative properties of some of the newer tribological materials now qualified for use in sodium systems.
Date: April 21, 1980
Creator: Johnson, R. N. & Farwick, D. G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Silicon-on ceramic process: silicon sheet growth and device development for the large-area silicon sheet task of the Low-Cost Solar Array Project. Quarterly report No. 14, January 1-March 31, 1980

Description: The purpose of this research program is to investigate the technical and economic feasibility of producing solar-cell-quality sheet silicon by coating inexpensive ceramic substrates with a thin layer of polycrystalline silicon. The coating methods to be developed are directed toward a minimum-cost process for producing solar cells with a terrestrial conversion efficiency of 11% or greater. By applying a graphite coating to one face of a ceramic substrate, molten silicon can be made to wet only … more
Date: April 21, 1980
Creator: Whitehead, A B; Zook, J D; Grung, B L; McHenry, K; Schuldt, S B & Chapman, P W
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Innovative Clean Coal Technology (ICCT): 500 MW demonstration of advanced wall-fired combustion techniques for the reduction of nitrogen oxide (NO sub x ) emissions from coal-fired boilers

Description: This quarterly report discusses the technical progress of an Innovative Clean Coal Technology (ICCT) demonstration of advanced wall-fired combustion techniques for the reduction of nitrogen oxide (NO{sub x}) emissions from coal-fired boilers. The project is being conducted at Georgia Power Company's Plant Hammond Unit 4 located near Rome, Georgia. The primary goal of this project is the characterization of the low NO{sub x} combustion equipment through the collection and analysis of long-term e… more
Date: April 21, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Sub-keV, subnanosecond measurements of x-ray spectra from laser-produced plasmas

Description: As part of the effort to extend our x-ray diagnostic capabilities, we have made x-ray spectral measurements of laser-produced plasmas for photon energies down to 100 eV with a time response of 0.5 nsec. Fast, windowless x-ray diodes were used in conjunction with critical angle reflecting mirrors and thin filters for energy definition for two channels, 300 to 600 eV and 800 to 1300 eV. A third channel, using only an x-ray diode and filter, provided spectral information in the 100 to 300 eV regio… more
Date: October 21, 1977
Creator: Kornblum, H. N.; Koppel, L. N.; Slivinsky, V. W.; Glaros, S. S.; Ahlstrom, H. G. & Larsen, J. T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Slicing of silicon into sheet material. Final report, January 9, 1976-September 30, 1979

Description: Complete results, from raw data to interpretation to recommendations, of a program to investigate the use of multiblade slurry sawing to produce silicon wafers from ingots are presented. During the course of this program, the commercially available state of the art process was improved by 20% in terms of area of silicon wafers produced from an ingot. The process was improved 34% on an experimental basis. Production of 20 wafers per centimeter length of 100 mm diameter ingot is now possible on a… more
Date: September 21, 1979
Creator: Fleming, J R; Holden, S C & Wolfson, R G
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of Electrochemical Photovoltaic Cells. Second Technical Progress Report, August 1, 1979-October 31, 1979

Description: The development of stable, efficient, photoelectrochemical cells based on silicon and gallium arsenide in non-aqueous electrolyte systems is being investigated. Redox reactions of ferrocene, anthracene and anthraquinone have been studied on platinum and n-silicon electrodes. The latter have been further characterized by differential capacitance measurements. Cells and equipment have been designed and set up for long-term stability studies.
Date: November 21, 1979
Creator: Austin, A. E.; Byker, H. J. & Brooman, E. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of a performance-based industrial energy efficiency indicator for cement manufacturing plants.

Description: Organizations that implement strategic energy management programs have the potential to achieve sustained energy savings if the programs are carried out properly. A key opportunity for achieving energy savings that plant managers can take is to determine an appropriate level of energy performance by comparing the plant performance with that of similar plants in the same industry. Manufacturing plants can set energy efficiency targets by using performance-based indicators. The U.S. Environmental… more
Date: July 21, 2006
Creator: Boyd, G. & Sciences, Decision and Information
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Final Report for "Accurate Numerical Models of the Secondary Electron Yield from Grazing-incidence Collisions".

Description: Effects of stray electrons are a main factor limiting performance of many accelerators. Because heavy-ion fusion (HIF) accelerators will operate in regimes of higher current and with walls much closer to the beam than accelerators operating today, stray electrons might have a large, detrimental effect on the performance of an HIF accelerator. A primary source of stray electrons is electrons generated when halo ions strike the beam pipe walls. There is some research on these types of secondary e… more
Date: October 21, 2008
Creator: Veitzer, Seth A
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

IMPACT OF ALUMINATE IONS ON THE PROPERTIES OF SALTSTONE GROUT MIXES

Description: It is important to identify and control the operational and compositional variables that impact the important processing and performance properties of Saltstone grout mixes. The grout that is produced at the Saltstone Production Facility (SPF) is referred to as Saltstone and is a waste form that immobilizes low concentrations of radionuclides as well as certain toxic metals. The Saltstone will be disposed of in vaults at Savannah River Site (SRS). An effort referred to as the Saltstone Variabil… more
Date: February 21, 2008
Creator: Harbour, J; Tommy Edwards, T; Erich Hansen, E & Vickie Williams, V
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Delaware Basin Monitoring Annual Report

Description: The Delaware Basin Drilling Surveillance Program (DBDSP) is designed to monitor drilling activities in the vicinity of the Waste Isolation Pilot Plant (WIPP). This program is based on Environmental Protection Agency (EPA) requirements. The EPA environmental standards for the management and disposal of transuranic (TRU) radioactive waste are codified in 40 CFR Part 191 (EPA 1993). Subparts B and C of the standard address the disposal of radioactive waste. The standard requires the Department of … more
Date: September 21, 2002
Creator: Washington Regulatory and Environmental Services
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

OFFICE OF SCIENCE AND TECHNOLOGY AND INTERNATIONAL, NATURAL BARRIERS THRUST OVERVIEW

Description: The Natural Barriers Thrust supports scientific studies of the natural system at the proposed repository site of Yucca Mountain. It stresses the realistic representation of the natural system with respect to processes and parameters, by means of laboratory, field, and modeling studies. It has the objectives to demonstrate that the natural barriers can make large contributions to repository performance, supporting the multiple-barrier concept for geological disposal of high-level radioactive was… more
Date: February 21, 2006
Creator: Bodvarsson, B. & Tsang, Y.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

West Valley Demonstration Project Annual Site Environmental Report Calendard Year 2005

Description: Annual Site Environmental Report for the West Valley Demonstration Project (WVDP) for Calendar Year 2005. The report summarizes calendar year (CY) 2005 environmental monitoring data so as to describe the performance of the WVDP's environmental management system (EMS), confirm compliance with standards and regulations, and highlight important programs.
Date: September 21, 2006
Creator: West Valley Nuclear Services Company (WVNSCO) and URS Group, Inc.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Review of Tribological Coatings for Control Drive Mechanisms in Space Reactors

Description: Tribological coatings must provide lubrication for moving components of the control drive mechanism for a space reactor and prevent seizing due to friction or diffusion welding to provide highly reliable and precise control of reflector position over the mission lifetime. Several coatings were evaluated based on tribological performance at elevated temperatures and in ultrahigh vacuum environments. Candidates with proven performance in the anticipated environment are limited primarily to disulf… more
Date: February 21, 2006
Creator: Larkin, CJ; Edington, JD & Close, BJ
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Compiler-Enhanced Incremental Checkpointing for OpenMP Applications

Description: As modern supercomputing systems reach the peta-flop performance range, they grow in both size and complexity. This makes them increasingly vulnerable to failures from a variety of causes. Checkpointing is a popular technique for tolerating such failures, enabling applications to periodically save their state and restart computation after a failure. Although a variety of automated system-level checkpointing solutions are currently available to HPC users, manual application-level checkpointing r… more
Date: January 21, 2008
Creator: Bronevetsky, Greg; Marques, Daniel; Pingali, Keshav; Rugina, Radu & McKee, Sally A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Summary of operations and performance of the Utica aquifer and North Lake Basin wetlands restoration project in December 2005-November 2006.

Description: This document summarizes the performance of the groundwater restoration systems installed by the Commodity Credit Corporation of the U.S. Department of Agriculture (CCC/USDA) at the former CCC/USDA grain storage facility in Utica, Nebraska, during the second year of system operation, from December 1, 2005, until November 31, 2006. In the project at Utica, the CCC/USDA is cooperating with multiple state and federal agencies to remove carbon tetrachloride contamination from a shallow aquifer unde… more
Date: December 21, 2006
Creator: LaFreniere, L. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Science-Driven Network Requirements for ESnet

Description: The Energy Sciences Network (ESnet) is the primary providerof network connectivity for the US Department of Energy Office ofScience, the single largest supporter of basic research in the physicalsciences in the United States. In support of the Office of Scienceprograms, ESnet regularly updates and refreshes its understanding of thenetworking requirements of the instruments, facilities and scientiststhat it serves. This focus has helped ESnet to be a highly successfulenabler of scientific discov… more
Date: February 21, 2006
Creator: Adams, Paul; Canon, Shane; Carter, Steven; Draney, Brent; Greenwald, Martin; Hodges, Jason et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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