UNT Libraries Government Documents Department - 19 Matching Results

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open access

Applications of holographic interferometry to cryogenic ICF target characterization

Description: Uniformity of condensed layers of DT fuel in cryogenic ICF targets is a crucial parameter in their design. Measurements by classical interferometry lacks resolution to determine DT layer uniformity for targets with thick glass shells and/or thick ablative polymer coatings. We have developed holographic interferometry as an alternative tool for layer uniformity determination. This method is sensitive only to the fuel layer itself. We describe the technique and interference pattern analysis, and … more
Date: September 23, 1981
Creator: Bernat, T. P.; Darling, D. H. & Sanchez, J. J.
Item Type: Refine your search to only Article
open access

Burro-series gas-concentration contours

Description: Gas concentration contours generated from the data taken during the Burro series experiments 8 and 9 are presented. The contours are presented as a function of time in both a horizontal and a vertical format for several areas within the array.
Date: December 23, 1981
Creator: Koopman, R. P.
Item Type: Refine your search to only Report
open access

Computer circuit analysis of induced currents in the MFTF-B magnet system

Description: An analysis was made of the induced current behavior of the MFTF-B magnet system. Although the magnet system consists of 22 coils, because of its symmetry we considered only 11 coils in the analysis. Various combinations of the coils were dumped either singly or in groups, with the current behavior in all magnets calculated as a function of time after initiation of the dump.
Date: October 23, 1981
Creator: Magnuson, G.D. & Woods, E.L.
Item Type: Refine your search to only Report
open access

Design features of the A-cell and transition coils of MFTF-B

Description: The MFTF-B transition coil and A-cell magnet designs use variations of the copper-stabilized NbTi conductor developed by LLNL for the MFTF Yin-Yang magnets. This conductor will be wound on the one inch thick (12.7 mm) stainless steel coil forms using a two-axis winding machine similar to the existing LLNL Yin-Yang winding machine. After winding, covers will be placed over the coil and welded to the coil form to form a helium-tight jacket around the conductor. These jacketed coils are then enclo… more
Date: October 23, 1981
Creator: Tatro, R. E.; Wohlwend, J. W. & Ring, D. S.
Item Type: Refine your search to only Report
open access

Design features of the solenoid magnets for the central cell of the MFTF-B

Description: The 14 superconducting solenoid magnets which form the central cell of the MFTF-B are being designed and fabricated by General Dynamics for the Lawrence Livermore National Laboratory. Each solenoid coil has a mean diameter of five meters and contains 600 turns of a proven conductor type. Structural loading resulting from credible fault events, cooldown and warmup requirements, and manufacturing processes consistent with other MFTF-B magnets have been considered in the selection of 304 LN as the… more
Date: October 23, 1981
Creator: Wohlwend, J. W.; Tatro, R. E. & Ring, D. S.
Item Type: Refine your search to only Report
open access

Development of nitronic 50 fusion welding techniques for 4 K service

Description: The Mirror Fusion Test Facility (MFTF-B) is a large magnetic fusion energy experiment in the tandem mirror configuration. The requirement that each pair of Yin-Yang magnets, one pair at each end of the experiment, not undergo excessive lateral motion during seismic events was found to require excessively thick (> 12.7 mm) walled tubing in the support-struts, which accelerated the flow of heat inward to the 4 K magnet case from the nearby 300 K wall of the rector vessel, when any of the Cr-Ni au… more
Date: September 23, 1981
Creator: Dalder, E.N.C. & Juhas, M.C.
Item Type: Refine your search to only Article
open access

Developments in solid state detectors for personnel neutron dosimetry

Description: The personnel neutron exposure potential at the Lawrence Livermore National Laboratory is more diverse than at many other facilities, due to the wide range of neutron producing activities. Albedo energy response problems in the face of the diversity of sources, and a concern about possible photon interferences with the neutron albedo response, have prompted development of some additional dosimetry techniques to augment the personnel monitoring program. This work now consists of two programs - t… more
Date: July 23, 1981
Creator: Griffith, R.V.; Davidson, K.J.; Miller, D.E. & Vindelov, K.E.
Item Type: Refine your search to only Article
open access

Electrical aspects of rainout

Description: Rainout commonly denotes the aggregate of phenomena associated with precipitation scavenging of radioactivity from a cloud of nuclear debris that is within a natural rain cloud. (In contrast, the term, washout, is applicable when the nuclear cloud is below the rain cloud and the term, fallout, commonly denotes the direct gravitational settling of contaminated solid material from a nuclear cloud.) Nuclear debris aerosols may be scavenged within natural clouds by a variety of different physical p… more
Date: November 23, 1981
Creator: Rosenkilde, C.E.
Item Type: Refine your search to only Report
open access

Energy-efficient electric motors study

Description: The study identifies the industrial decision makers, investigated the information they needed to know, how they can best be reached, and the motivating factors for purchasing energy-efficient electric motors. A survey was conducted of purchasers of integral horsepower polyphase motors. The survey measured current knowledge of and awareness of energy-efficient motors, decision-making criteria, information sources, purchase and usage patterns, and related factors. The survey data were used for th… more
Date: March 23, 1981
Item Type: Refine your search to only Report
open access

Far-infrared studies of superconducting V/sub 3/Si, Nb/sub 3/Ge, and Nb

Description: Optical techniques in the far infrared region (10 to 200 cm/sup -1/) are to explore the basic superconducting behavior of the high temperature superconductors V/sub 3/Si, Nb/sub 3/Ge, Nb, and granular NbN. Such spectroscopy yields accurate gap values, information about the temperature dependence of superconducting properties, values of the electron-phonon spectral function, and insight into grain-to-grain coupling in inhomogeneous geometries. These results are used to calculate basic supercondu… more
Date: February 23, 1981
Creator: Perkowitz, S.
Item Type: Refine your search to only Report
open access

Great Western Malting Company geothermal project, Pocatello, Idaho. Final report

Description: The Great Western Malting Company recently constructed a barley malting facility in Pocatello, Idaho, designed to produce 6.0 million bushels per year of brewing malt. This facility uses natural gas to supply the energy for germination and kilning processes. The escalating cost of natural gas has prompted the company to look at alternate and more economical sources of energy. Trans Energy Systems has investigated the viabiity of using geothermal energy at the new barley processing plant. Prelim… more
Date: December 23, 1981
Creator: Christensen, N.T.; McGeen, M.A.; Corlett, D.F. & Urmston, R.
Item Type: Refine your search to only Report
open access

Liquid-drop technique for generation of organic glass and metal shells

Description: We have for several years utilized the technique of capillary wave synchronization of the break-up of single and multiple component jets to produce uniform sized liquid drops and solid particles, and hollow liquid and solid shells. The technique has also been used to encapsulate a number of liquids in impermeable spherical shells. Highly uniform glass shells have been made by generating uniform drops of glass forming materials in an aqueous solution, subsequently evaporating the water, and then… more
Date: December 23, 1981
Creator: Hendricks, C.D.
Item Type: Refine your search to only Article
open access

Northern Marshall Islands Radiological Survey: Sampling and Analysis Summary

Description: A radiological survey was conducted in the Northern Marshall Islands to document reamining external gamma exposures from nuclear tests conducted at Enewetak and Bikini Atolls. An additional program was later included to obtain terrestrial and marine samples for radiological dose assessment for current or potential atoll inhabitants. This report is the first of a series summarizing the results from the terrestrial and marine surveys. The sample collection and processing procedures and the genera… more
Date: July 23, 1981
Creator: Robison, W. L.; Conrado, C. L.; Eagle, R. J. & Stuart, M. L.
Item Type: Refine your search to only Report
open access

Preparation and properties of SYNROC D containing simulated Savannah River Plant high-level defense waste

Description: We describe in detail the formulation and processing steps used to prepare all SYNROC D samples tested in the Comparative Leach Testing Program at the Savannah River Laboratory. We also discuss how the composition of the Savannah River Plant sludge influences the formulation and ultimate preparation of SYNROC D. Mechanical properties are reported in the categories of elastic constants, flexural and compressive strengths, and microhardness; thermal expansion and thermal conductivity results are … more
Date: July 23, 1981
Creator: Hoenig, C.; Rozsa, R.; Bazan, F.; Otto, R. & Grens, J.
Item Type: Refine your search to only Report
open access

Reusable tamper-indicating security seal. [Patent Application]

Description: The invention teaches means for detecting unauthorized tampering or substitutions of a device, and has particular utility when applied on a seal device used to secure a location or thing. The seal has a transparent body wall, and a first indicia, viz., a label identification is formed on the inside surface of this wall. Second and third indicia are formed on the outside surface of the transparent wall, and each of these indicia is transparent to allow the parallax angled viewing of the first in… more
Date: June 23, 1981
Creator: Ryan, M. J.
Item Type: Refine your search to only Patent
open access

Shock anomaly and s-d transition in high-pressure lanthanum

Description: Linear-muffin-tin orbital calculations of the band structure and pressure-volume isotherms for fcc La, both at zero and finite temperatures. The calculated bulk modulus shows a rapid stiffening in the range from 40 to 50% compression, due to termination of the 6s to 5d electronic transition. When combined with a simple Slater model analysis, these results yield a temperature dependent peak in the lattice Grueneisen parameter. Experimental confirmation of this peak is found in an anomalous stiff… more
Date: July 23, 1981
Creator: McMahan, A.K.; Skriver, H.L. & Johansson, B.
Item Type: Refine your search to only Article
open access

Simulation of multi-frequency ECRH

Description: We use a test particle simulation code to investigate electron cyclotron heating in a magnetic mirror well. A comparison is made between heating with one frequency and heating with two closely spaced frequencies. The code follows electron orbits in the presence of one or two monochromatic ECRH waves using guiding center equations and an equation for the electron gyrophase. Coulomb collisions with electrons and ions are simulated as a Monte Carlo scattering process. We find for the parameters of… more
Date: November 23, 1981
Creator: Rognlien, T.D.
Item Type: Refine your search to only Article
open access

Test building instrumentation cooperative agreement: heating/daylighting prototype development. Phase II. Passive and hybrid solar manufactured building project. Project status report No. 2, April 16, 1980-March 16, 1981

Description: Progress is reported on the test building instrumentation and problems encountered are described. An instrumentation trip report is presented dealing with installation of data acquisition systems, roof and roll runner building. (MCW)
Date: March 23, 1981
Creator: Lindsey, L.L. & Snyder, M.K.
Item Type: Refine your search to only Report
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