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in subjects: "Glass"

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DWPF waste glass Product Composition Control System

The Defense Waste Processing Facility (DWPF) will be used to blend aqueous radwaste (PHA) with solid radwaste (Sludge) in a waste receipt vessel (the SRAT). The resulting SRAT material is transferred to the SME an there blended with ground glass (Frit) to produce a batch of melter feed slurry. The SME material is passed to a hold tank (the MFT) which is used to continuously feed the DWPF melter. The melter. The melter produces a molten glass wasteform which is poured into stainless steel canist… more

Date: January 1, 1992

Creator: Brown, K.G. & Postles, R.L.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Development of a High Velocity Solid Particle Launcher for Laboratory Erosion Studies. [Reentry Vehicle Heat Shields]

A solid particle launcher for laboratory erosion studies has been developed and successfully demonstrated. Performance of the launcher is predicted by a two-dimensional, time-dependent theoretical analysis to within the experimental uncertainty. The present device accelerates 100 μm diameter glass spheres to velocities of 2.1+/- 0.6 km/sec. The system is safe, reliable, and has a test repetition of about 2 shots/hour.

Date: March 1, 1975

Creator: Aeschliman, D. P.; Mulac, A. J.; Guzman, J. A.; Eaton, R. R. & Fox, R. L.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Joining of ceramics for high performance energy systems. Mid-term progress report, August 1, 1979-March 31, 1980

The subject program is primarily an exploratory and demonstration study of the use of silicate glass-based adhesives for bonding silicon-base refractory ceramics (SiC, Si/sub 3/N/sub 4/). The projected application is 1250 to 2050/sup 0/F relaxing joint service in high-performance energy conversion systems. The five program tasks and their current status are as follows. Task 1 - Long-Term Joint Stability. Time-temperature-transformation studies of candidate glass adhesives, out to 2000 hours sim… more

Date: October 6, 1980

Creator: Smeltzer, C E & Metcalfe, A G

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Phosphate-bonded glass cements for geothermal wells. Final report

Calcium aluminosilicate glasses were found to react with phosphoric acid in three ways depending upon silica content. Above 55% SiO/sub 2/ they are insoluble while below 50% they dissolve readily. The transition compositions release calcium and aluminum ions and a silica gel phase replaces the glass. Activation energies in the order of 10 kcal/mole are associated with the dissolution. Equilibrium studies in the systems CaO-P/sub 2/O/sub 5/-H/sub 2/O, Al/sub 2/O/sub 3/-P/sub 2/O/sub 5/-H/sub 2/O… more

Date: September 1, 1979

Creator: Rockett, T.J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Long-term leaching of irradiated spent fuel

Spent Light Water Reactor (LWR) fuel with burnups of 9, 28 and 54 MWd/kg U were leach tested at 25/sup 0/C in deionized water in a Paige apparatus. No discernible differences in leach rates were observed due to burnup. Additionally, the 28 MWd/kg U fuel was IAEA leach tested in five different leachants using the IAEA method. Deionized water gave the highest leach rates and a calcium chloride solution gave the lowest leach rates. An accelerated leaching period was observed during the Paige leach… more

Date: January 1, 1979

Creator: Katayama, Y. B. & Bradley, D. J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

LFCM vitrification technology. Quarterly progress report, January-March 1986

This report is compiled by the Nuclear Waste Treatment Progrqam and the Hanford Waste Vitrification Program at Pacific Northwest Laboratory to document progress on liquid-fed ceramic melter (LFCM) vitrification technology. Progress in the following technical subject areas during the second quarter of FY 1986 is discussed: melting process chemistry and glass development, feed preparation and transfer systems, melter systems, canister filling and handling systems, off-gas systems, and process/pro… more

Date: September 1, 1986

Creator: Burkholder, H. C. & Minor, J. E.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

The role of mobile ions in fast ion conducting systems and high impact strength ceramics

This report discusses the following topics: Polymeric systems; Lead halide-containing fast ion conducting glasses; Mixed ionic electronic conduction; Plastic crystals; and Mobile ions as a basis for high impact ceramics.

Date: January 1, 1991

Creator: Angell, C. A.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Recycled used fluorescent light tube solar water heater. Final technical report

A project to investigate methods that might be used to utilize old fluorescent light tubes as solar water heater components then to produce a booklet of instructions for others to use to construct their own water heaters is described. Various methods of opening, cleaning and shaping the ends of the tubes were attempted. The reflective material needed inside some of the heaters was mylar and worked quite well but the Btu gain was disappointing. There were problems with the cement used and epoxy … more

Date: January 1, 1979

Creator: Jaquette, F M

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Role of groundwater oxidation potential and radiolysis on waste glass performance in crystalline repository environments

Laboratory experiments have shown that groundwater conditions in a Stripa granite repository will be as reducing as those in a basalt repository. The final oxidation potential (Eh) at 70/sup 0/C for Stripa groundwater deaerated and equilibrated with crystalline granite was -0.45V. In contrast, the oxidation potential at 60/sup 0/C for Grande Ronde groundwater equilibrated with basalt was -0.40V. The reducing groundwater conditions were found to slightly decrease the time-dependent release of so… more

Date: January 1, 1985

Creator: Jantzen, Carol M. & Bibler, Ned E.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Radioactivities of Long Duration Exposure Facility (LDEF) materials: Baggage and bonanzas

Radioactivities in materials onboard the returned Long Duration Exposure Facility (LDEF) satellite have been studied by a variety of techniques. Among the most powerful is low-background Ge-semiconductor detector gamma-ray spectrometry, illustrated here by results obtained at the Lawrence Berkeley Laboratory's (LBL) Low Bakground Facilities, in a multi-laboratory collaboration coordinated by Dr. Thomas Parnell's team at the Marshall Spacecraft Center, Huntsville, Alabama.

Date: August 1, 1991

Creator: Smith, A. R. & Hurley, D. L.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Investigation on the damage threshold of films coated on various silicate, fluorophosphate and phosphate laser glasses. Final report, January 1, 1979-August 29, 1980

Effects of substrate laser glass on the damage threshold and adhesion of dielectric films has been studied in order to improve the damage threshold. The study is divided into two parts: the first part dealing with four types of laser glass, LSG-91H silicate, LHG-8 phosphate, P-1 phosphate and LHG-10 fluorophosphate; the second part dealing with twenty-six glasses with systematically modified compositions in three glass systems, silicate, phosphate and fluorophosphate.

Date: January 1, 1980

Creator: Nakajima, Y & Izumitani, T

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Liquid waste handling facilities for a conceptual LWR spent fuel reprocessing complex

The waste evaporator systems and the methods for evaporating the liquid wastes of various radioactivity levels are discussed. After the liquid wastes are evaporated and nitric acid is recovered the high-level liquid waste is incorporated into borosilicate glass and the intermediate-level liquid waste into concrete for final disposal. (LK)

Date: January 1, 1978

Creator: Witt, D.C. & Bradley, R.F.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Array automated assembly: Phase 2. Quarterly report

An analysis was made of cost trade-offs for shaping modified square wafers from cylindrical crystals. For reasonably expectable silicon and sheet costs, the optimum shape will be nearer a circle than a square. Tests were conducted of the effectiveness of texture etching for removal of surface damage on sawed wafers. Four glass systems have survived preliminary screening tests for use as edge masking dielectrics. These include beta-spodumen, MgO-Al/sub 2/O/sub 3/ borosilicate, baria and titania … more

Date: February 1, 1978

Creator: Taylor, W.E.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Profile modification by the ponderomotive force in spherical targets

Experiments have been performed by LLL which indicate a definite density profile steepening. One possible mechanism for this effect is the ponderomotive force. LASNEX has been modified to include the light momentum deposition in the form rho dv/dt = -nabla P - nabla(radical epsilon + radical 1/epsilon) I/2c. Results will be presented from numerical simulations on spherical glass targets at laser intensities from 10/sup 14/ to 10/sup 16/ watts/cm/sup 2/. Emphasis is placed on the nature of the d… more

Date: October 26, 1977

Creator: Larsen, J. T. & Harte, J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Exploding pusher targets for the SHIVA laser system

The first targets for the 20 TW SHIVA laser system were designed. They are simple glass micro-balloons, approximately 300 ..mu..m in diameter and 2 ..mu..m thick, filled with D-T gas. Using LASNEX, whose model physics was utilized successfully for ARGUS targets, we optimize for both gain and yield. The target behaves as an exploding pusher. Different simple analytic models for the physics of this mode are presented, and are tested by comparing their scaling predictions, at constant absorbed pow… more

Date: September 26, 1977

Creator: Rosen, M. D.; Larsen, J. T. & Nuckolls, J. H.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Hanford Waste Vitrification Plant

The Hanford Waste Vitrification Plant (HWVP) is being designed to immobilize pretreated Hanford high-level waste and transuranic waste in borosilicate glass contained in stainless steel canisters. Testing is being conducted in the HWVP Technology Development Project to ensure that adapted technologies are applicable to the candidate Hanford wastes and to generate information for waste form qualification. Empirical modeling is being conducted to define a glass composition range consistent with p… more

Date: October 1, 1991

Creator: Larson, D. E.; Allen, C. R. (Pacific Northwest Lab., Richland, WA (United States)); Kruger, O. L. & Weber, E. T. (Westinghouse Hanford Co., Richland, WA (United States))

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Radiographic detection of 100 A thickness variations in 1-. mu. m-thick coatings applied to submillimeter-diameter laser fusion targets

We have developed x-ray radiography to measure thickness variations of coatings on laser fusion targets. Our technique is based on measuring the variation in x-ray transmission through the targets. The simplest targets are hollow glass microshells or microballoons 100 to 500 ..mu..m in diameter, that have several layers of metals or plastics, 1 to 100 ..mu..m thick. Our goal is to examine these opaque coatings for thickness variations as small as 1% or 0.1%, depending on the type of defect. Usi… more

Date: January 1, 1986

Creator: Stupin, D.M.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Solar energy system economic evaluation: final report for SEMCO-Loxahatchee, Loxahatchee National Wildlife Refuge, Palm Beach County, Florida

The economic analysis of the solar energy system that was installed at Loxahatchee, Florida Operational Test Site (OTS) is developed for Loxahatchee and four other sites typical of a wide range of environmental and economic conditions in the continental United States. This analysis is accomplished based on the technical and economic models in the f-Chart design procedure with inputs based on the characteristics of the installed system and local conditions. The results are expressed in terms of … more

Date: July 1, 1980

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Multivariate calibration applied to the quantitative analysis of infrared spectra

Multivariate calibration methods are very useful for improving the precision, accuracy, and reliability of quantitative spectral analyses. Spectroscopists can more effectively use these sophisticated statistical tools if they have a qualitative understanding of the techniques involved. A qualitative picture of the factor analysis multivariate calibration methods of partial least squares (PLS) and principal component regression (PCR) is presented using infrared calibrations based upon spectra of… more

Date: January 1, 1991

Creator: Haaland, D. M.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Ion-beam depth-profiling studies of leached glasses

Ion-beam depth-profiling was carried out on three different glasses leached (or hydrated) in deionized water using /sup 1/H(/sup 19/F,..cap alpha gamma..)/sup 16/O nuclear reaction, secondary ion mass spectrometry (SIMS) and sputter-induced photon spectrometry (SIPS) techniques. The depth-profiles show an interdiffusion mechanism in which the sodium ions in the glass are depleted and replaced by hydrogen (H/sup +/) or hydronium (H/sub 3/O/sup +/) ions from the solution. The leaching behavior do… more

Date: January 1, 1981

Creator: Houser, C. A.; Tsong, I. S. T.; White, W. B.; Wintenberg, A. L.; Miller, P. D. & Moak, C. D.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Advances in processing nuclear waste glasses

The vitrification of nuclear waste glasses is presenting unique challenges to glass technologists. On the one hand, the composition of the most important constituent of the glass batch/--/the waste/--/may vary widely. On the other hand, the vitrification process itself must be tightly controlled to ensure product quality, public safety, and process reliability. This has led to several important developments in waste vitrification technology, all aimed at improving process control. These include… more

Date: January 1, 1988

Creator: Plodinec, M J

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Laboratory work in support of West Valley glass development

Over the past six years, Pacific Northwest Laboratory (PNL) has conducted several studies in support of waste glass composition development and testing of glass compositions suitable for immobilizing the nuclear wastes stored at West Valley, New York. As a result of pilot-scale testing conducted by PNL, the glass composition was changed from that originally recommended in response to changes in the waste stream, and several processing-related problems were discovered. These problems were solved… more

Date: May 1, 1988

Creator: Bunnell, L.R.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Nuclear waste-form risk assessment for US Defense waste at Savannah River Plant. Annual report FY 1981

Savannah River Plant has been supporting the Lawrence Livermore National Laboratory in its present effort to perform risk assessments of alternative waste forms for defense waste. This effort relates to choosing a suitable combination of solid form and geologic medium on the basis of risk of exposure to future generations; therefore, the focus is on post-closure considerations of deep geologic repositories. The waste forms being investigated include borosilicate glass, SYNROC, and others. Geolo… more

Date: December 1, 1981

Creator: Cheung, H.; Edwards, L. L.; Harvey, T. F.; Jackson, D. D. & Revelli, M. A.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Optical components for the Nova laser

In addition to its other characteristics, the Nova Laser Fusion facility may well be the largest precision optical project ever undertaken. Moreover, during the course of construction, concurrent research and development has been successfully conducted, and has resulted in significant advances in various technical areas, including manufacturing efficiency. Although assembly of the first two beams of Nova is just commencing, the optical production, including construction of the special facilitie… more

Date: May 17, 1982

Creator: Wallerstein, E.P.; Baker, P.C. & Brown, N.J.

Item Type: Article

Partner: UNT Libraries Government Documents Department