UNT Libraries Government Documents Department - 41 Matching Results

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Nondestructive, energy-dispersive x-ray fluorescence analysis of product-stream concentrations from reprocessed LWR fuels

Description: Energy-dispersive x-ray fluorescence analysis can be used for quantitative on-line monitoring of the product concentrations in single- or dual-element process streams in a reprocessing plant. The 122-keV gamma ray from /sup 57/Co is used to excite the K x-rays of uranium and/or plutonium in nitric acid solution streams. A collimated HPGe detector is used to measure the excited x-ray intensities. Net solution radioactivity may be measured by eclipsing the exciting radiation, or by measuring it s… more
Date: January 5, 1979
Creator: Camp, D. C.; Ruhter, W. D. & Benjamin, S.
Item Type: Refine your search to only Report
open access

Phase 2 of the Array Automated Assembly Task for the Low Cost Solar Array Project. Quarterly report No. 7, April 1-June 30, 1979

Description: The major objective of this program is to define and verify a process sequence for the fabrication of solar cell modules from dendritic web silicon. Another objective is the development of key process steps. The process sequence and the individual steps must be amenable to automation and low cost manufacturing methods so that the target selling price of $0.70/watt peak (1980$ in 1986) can be achieved. Two process specifications supplied by other contractors have been tested. The Al Silk Screeni… more
Date: September 5, 1979
Creator: Campbell, R. B.; Rai-Choudhury, P.; Seman, E. J.; Rohatgi, A.; Davis, J. R.; Ostroski, J. W. et al.
Item Type: Refine your search to only Report
open access

On-line structural response analysis: using the extended Kalman estimator/identifier

Description: This report disucsses the development of on-line state and parameter estimators used to analyze the structural response of buildings. The estimator/identifier is an extended Kalman filter (EKF), which has been applied with great success in other technological areas. It is shown that the EKF can perform quite well on simulated noisy structural response data.
Date: May 5, 1979
Creator: Candy, J.V.
Item Type: Refine your search to only Report
open access

Progress report: qualitative differences between first and second order fit of pressure data - 1/5 scale Mk I BWR pressure suppression experiment and analysis program

Description: Results are presented for the 1/5-scale Mark I boiling water reactor pressure suppression experiment. The objective of this study is to calculate the hydrodynamic vertical load function (HVLF) and the maximum download and maximum upload ratios for the 90/sup 0/ sector to 7.5/sup 0/ section (i.e., the 3D to 2D ratios) together with their associated error bounds. Special graphs are presented of the pressure data that are useful in diagnostic studies of the HVLF. These graphs are three dimensional… more
Date: January 5, 1979
Creator: Carr, E.; Lai, W. & McCauley, E.
Item Type: Refine your search to only Report
open access

Micro-fresnel structures for microscopy of laser generated bright x-ray sources

Description: A brief parametric survey of the x-ray characteristics of a gold micro-disk irradiated at 3 x 10/sup 14/ watt/cm/sup 2/ by a 1 nsec Nd-glass laser pulse has been provided as an example of a laser generated bright x-ray source. It was shown that a simple phenomenological model of the laser generated x-ray source as a microscopic equilibrium plasma radiating as a blackbody for a finite time determined by its hydrodynamic disassembly and radiation losses, serves to provide an adequate approximatio… more
Date: June 5, 1979
Creator: Ceglio, N.M.; Shavers, D.C.; Flanders, D.C. & Smith, H.I.
Item Type: Refine your search to only Article
open access

Engineering design of a 40 kV neutral-beam source

Description: Sections of the 40-kV, 40-A, TMX source are shown. This module is comprised of the arc chamber and accelerator sections. The source accelerator section uses a single rectangular insulator to perform three functions: providing voltage standoff, forming the supporting structure, and acting as the vacuum wall. Both machinable glass ceramic (Corning Macor/sup TM/) and F.R.P. (Nema G-10) have been used for this insulater. In either case, the insulator is joined to the titanium base plate and extract… more
Date: November 5, 1979
Creator: Duffy, T. J.; Molvik, A. W.; Baird, E. D.; Correll, D. L.; Munger, R. H.; Gillespie, K. et al.
Item Type: Refine your search to only Article
open access

High-energy air shock study in steel and grout pipes

Description: Voitenko compressors are used to generate 43 mm/..mu..s air shocks in both a steel and a grout outlet pipe containing ambient atmospheric air. Fiber-optic ports provide diaphragm burst times, time-of-arrival (TOA) data, and velocities for the shock front along the 20-mm-ID exit pipes. Pressure profiles are obtained at higher enthalpy shock propagation than ever before and at many locations along the exit pipes. Numerous other electronic sensors and postshot observations are described, as well a… more
Date: October 5, 1979
Creator: Glenn, H. D.; Kratz, H. R.; Keough, D. D.; Duganne, D. A.; Ruffner, D. J.; Swift, R. P. et al.
Item Type: Refine your search to only Report
open access

Conceptual design report for solar production of industrial process steam ranging in temperature from 300 to 550/sup 0/F. Phase 1, September 30, 1978-June 30, 1979

Description: The conceptual design of a solar process steam system began with studies and evaluations of various alternative design configurations. From these evaluations a final candidate design configuration was selected which is to be used for further detailed analysis and engineering. An evaluation of various types of distributed collector systems is presented. Cost-effectiveness of various distributed collectors was determined on the basis of total relative cost (including foundation and installation) … more
Date: January 5, 1979
Creator: Gupta, G.D.
Item Type: Refine your search to only Report
open access

Apparatus and techniques for the study of precipitation of solids and silica from hypersaline geothermal brine

Description: The kinetics of precipitation reactions in geothermal brines can be studied accurately only if the brine samples are collected and examined under anaerobic conditions and with minimum cooling. Apparatus and techniques were developed that achieve this for brine temperatures below 100/sup 0/C. The concentration of suspended solids is measured gravimetrically after filtration, and the concentration of dissolved silica is measured by atomic absorption spectrophotometry. Data from Woolsey No. 1 well… more
Date: July 5, 1979
Creator: Hill, J. H.; Harrar, J. E.; Otto, C. H., Jr.; Deutscher, S. B.; Crampton, H. E.; Grogan, R. G. et al.
Item Type: Refine your search to only Report
open access

Water-cooled U-tube grids for continuously operated neutral-beam injectors

Description: A design for water-cooled extractor grids for long-pulse and continuously operated ion sources for neutral-beam injectors is described. The most serious design problem encountered is that of minimizing the thermal deformation (bowing) of these slender grid rails, which have typical overall spans of 150 mm and diameters on the order of 1 mm. A unique U-tube design is proposed that offers the possibility of keeping the thermal bowing down to about 0.05 mm (about 2.0 mils). However, the design req… more
Date: November 5, 1979
Creator: Hoffman, M. A. & Duffy, T. J.
Item Type: Refine your search to only Article
open access

Applicability of flat plate methods in determining fluid/structure interaction effects in BWR pressure suppression systems

Description: Flat plate chord tests are one experimental method used to investigate how fluid/structure interaction (FSI) effects modify the impulsive loading in nuclear reactor pressure suppression pools. This analytical study examines the applicability of using a flexible flat plate in an otherwise rigid shell to model dynamic pool wall response in a flexible shell pressure suppression torus. Bubble pressures varying by a factor of seven are used as input to two-dimensional finite-element models. Boundary… more
Date: March 5, 1979
Creator: Holman, G.S.; McCauley, E.W. & Lu, S.C.H.
Item Type: Refine your search to only Article
open access

Automatic Ion-Exchange Chromatography in Corrosive Solvent Systems

Description: An automated system for the performance of ion-exchange chromatography with corrosive solvents has been built. It is LSI-II microcomputer controlled and is capable of selecting six sample/solvents and collecting six separate fractions. Preliminary results on the separation of plutonium from 8M HNO/sub 3/ solutions indicate that the system can achieve chemical yields, analytical accuracy, and precision fully comparable to manual column operation at a considerable savings of operator time.
Date: October 5, 1979
Creator: Hosmer, D. W. & Gazlay, A. L.
Item Type: Refine your search to only Article
open access

Nonlinear Behavior of Stimulated Scatter in Large Underdense Plasmas

Description: Several nonlinear effects which limit Brillouin and Raman scatter of intense light in large underdense plasmas are examined. After briefly considering ion trapping and harmonic generation, we focus on the self-consistent ion heating which occurs as an integral part of the Brillouin scattering process. In the long-term nonlinear state, the ion wave amplitude is determined by damping on the heated ion tail which self-consistently forms. A simple model of the scatter is presented and compared with… more
Date: November 5, 1979
Creator: Kruer, W. L. & Estabrook, K. G.
Item Type: Refine your search to only Article
open access

Emittance measurements on field emitter diodes

Description: On the basis of time-integrated emittance measurements, several different types of field emitter diodes were characterized at 1 to 3 kA, 1 MeV. These measurements were part of the design effort for the injector system of a linear induction accelerator, to be used as a flash x-ray source at Lawrence Livermore Laboratory. The experimental parameters were the cathode type, the anode mesh texture, the diode spacing and voltage, and the level of collimation of the emerging beam. Experimental results… more
Date: April 5, 1979
Creator: Kulke, B. & Kihara, R.
Item Type: Refine your search to only Article
open access

Software for the Local Control and Instrumentation System for MFTF

Description: There are nine different systems requiring over fifty computers in the Local Control and Instrumentation System for the Mirror Fusion Test Facility. Each computer system consists of an LSI-11/2 processor with 32,000 words of memory, a serial driver that implements the CAMAC serial highway protocol. With this large number of systems it is important that as much software as possible be common to all systems. A serial communications system has been developed for data transfers between the LSI-11/2… more
Date: November 5, 1979
Creator: Labiak, W. G.
Item Type: Refine your search to only Article
open access

Water-related impacts of geothermal energy production in California's Imperial Valley

Description: To successfully develop the geothermal resources of the Imperial Valley, adequate supplies of cooling water must be obtained. The primary sources of water include waste waters from agricultural lands, condensate from flashed-steam facilities, and irrigation water. The major advantages and disadvantages of these supplies are examined and then the consequences of adopting six sets of water policies to support three scenarios of geothermal energy production are assessed. The assessment includes an… more
Date: July 5, 1979
Creator: Layton, D. W.
Item Type: Refine your search to only Article
open access

TMX supermodel

Description: The TMX Supermodel is an attempt to synthesize all presently known experimental observations and theoretical scaling laws concerning particle and energy losses into a comprehensive zero-dimensional description of plasma confinement in the center cell and plugs of TMX. A list of important loss processes and physical effects included in the present state of evolution of the supermodel is given.
Date: March 5, 1979
Creator: Logan, B. G.
Item Type: Refine your search to only Report
open access

Fluid-flow monitoring using electromagnetic probing

Description: High-frequency electromagnetic probing is used to monitor the rate and direction of flow of fluids injected into the ground. This method shows the potential for providing more detailed information than procedures presently used. The experimental technique and the test-of-concept experimental results are discussed. This technique has applications in oil-reservoir engineering and in hydrology studies concerning storage of chemical and nuclear wastes. 11 figures.
Date: October 5, 1979
Creator: Lytle, R.J.; Lager, D.L.; Laine, E.F.; Salisbury, J.D. & Okada, J.T.
Item Type: Refine your search to only Report
open access

Chemistry research and development. Progress report, November 1978-April 1979

Description: The status of the following studies is given: calorimetry and thermodynamics of nuclear materials; americium recovery and purification; optimization of the cation exchange process for recovering americium and plutonium from molten net extraction residues; evaluation and comparison of bidentate extractants and methods for actinide recovery; a combined anion exchange-bidontate organophosphorus extraction process for molten salt extraction residues; a combined anion exchange-extraction chromatogra… more
Date: October 5, 1979
Creator: Miner, F. J.
Item Type: Refine your search to only Report
open access

Nuclear chemistry counting facilities: requirements definition

Description: In an effort to upgrade outdated instrumentation and to take advantage of current and imminent technologies the Nuclear Chemistry Division at Lawrence Livermore Laboratory is about to undertake a major upgrade of their low level radiation counting and analysis facilities. It is expected that such a project will make a more coordinated data acquisition and data processing system, reduce manual data handling operations and speed up data processing throughput. Before taking on a systems design it … more
Date: April 5, 1979
Creator: O'Brien, D.W. & Baker, J.
Item Type: Refine your search to only Report
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