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Development of passive electronic components for instrumentation of improved geothermal logging tools and components. Annual progress report

Description: Short term objectives for well-logging instrumentation are circuits which can operate at temperatures in the range 275/sup 0/C to 350/sup 0/C; the medium term goal is operation up to 500/sup 0/C, and the long term goal is to achieve operation at 1000/sup 0/C. It is apparent that useful electronic circuits will require the combination of both passive components and active devices. In order to meet the compatibility requirements, the basic technology which has been selected in this project is the… more
Date: October 20, 1977
Creator: Raymond, L.S.; Hamilton, D.J. & Kerwin, W.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Research for Electric Energy Systems

Description: This report documents the technical progress in investigations. The first investigation is concerned with the measurement of magnetic fields in support of epidemiogical and in vitro studies of biological field effects. NIST cohosted a workshop on exposure and biological parameters that should be considered during the vitro studies with extremely low frequency (ELF) magnetic and electric fields. Also, equations were developed to predict the magnetic field in a parallel plate magnetic field expos… more
Date: June 1, 1991
Creator: Anderson, W.E. (ed.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Multivariate calibration applied to the quantitative analysis of infrared spectra

Description: 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: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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CNC electrical discharge machining centers

Description: Computer numerical control (CNC) electrical discharge machining (EDM) centers were investigated to evaluate the application and cost effectiveness of establishing this capability at Allied-Signal Inc., Kansas City Division (KCD). In line with this investigation, metal samples were designed, prepared, and machined on an existing 15-year-old EDM machine and on two current technology CNC EDM machining centers at outside vendors. The results were recorded and evaluated. The study revealed that CNC … more
Date: October 1, 1991
Creator: Jaggars, S.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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An analysis of grazing incidence metal mirrors in a laser ICF reactor driver

Description: Grazing incidence metal mirrors (GIMMs) are examined to replace dielectric mirrors for the final elements in a laser beam line for an inertial confinement fusion reactor. For a laser driver with a wavelength from 250 to 500 nm in a 10-ms pulse, irradiated mirrors made of Al, Al alloys, or Mg were found to have calculated laser damage limits of 0.3--2.3 J/cm{sup 2} of beam energy and neutron lifetime fluence limits of over 5 {times} 10{sup 20} 14 MeV n/cm{sup 2} when used at grazing incidence an… more
Date: July 12, 1991
Creator: Bieri, R. & Guinan, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development of high-mechanical strength electrical insulations for tokamak toroidal field coils

Description: The electrical insulation for the TF (Toroidal Field) coils is subjected to a high interlaminar shear, tensile and compressive stresses. Two candidate epoxy/glass fiber systems using prepreg and vacuum impregnation techniques were evaluated. Specimens were prepared and processed under controlled conditions to simulate specification manufacturing procedures. The strengths of the insulation were measured in interlaminar shear, tension, compression, and combined shear and compression statically. S… more
Date: January 1, 1977
Creator: Burke, C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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DOE Task Force meeting on Electrical Breakdown of Insulating Ceramics in a High Radiation Field

Description: This volume contains the abstracts and presentation material from the Research Assistance Task Force Meeting Electrical Breakdown of Insulating Ceramics in a High-Radiation Field.'' The meeting was jointly sponsored by the Office of Basic Energy Sciences and the Office of Fusion Energy of the US Department of Energy in Vail, Colorado, May 28--June 1, 1991. The 26 participants represented expertise in fusion, radiation damage, electrical breakdown, ceramics, and semiconductor and electronic stru… more
Date: August 1, 1991
Creator: Green, P.H. (comp.)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Structural study of the high-pressure antiferroelectric phase of CsH/sub 2/PO/sub 4/

Description: A three-dimensional neutron diffraction study has been carried out on the pressure-induced antiferroelectric phase of CsH/sub 2/PO/sub 4/. At 100.7/sup 0/K and a hydrostatic pressure of 3.6 kbar, the unit cell parameters are a = 15.625(9), b = 6.254(2), c = 4.886(1) A, ..beta.. = 108.08(3)/sup 0/ and Z = 4. Atomic parameters were determined using full-matrix least-squares methods which yield final agreement indices: R(F/sup 2/) = 0.0715, R/sub w/(F/sup 2/) = 0.0807 and S = 2.13. The structure i… more
Date: January 1, 1985
Creator: Schuele, P.J. & Thomas, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Development of an improved extruded dielectric cable rated 230 kV

Description: Work performed on developing an improved 230 kV extruded solid dielectric cable, the techniques of jointing such cables and the testing of terminations suitable for operation at that voltage level are described. Difficulties were encountered during manufacture in applying the semi-conducting extruded conductor shield. A new higher melt point compound solved the problem. A joint capable of operating at the 230 kV level was developed but showed a deficiency under voltage impulse testing while the… more
Date: May 1, 1977
Creator: Blais, L D; Traut, R T & Bolden, G N
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Stress and phase transformation phenomena in oxide films

Description: In situ optical methods are reviewed for characterization of phase transformation processes and evaluation of residual stress in solution- deposited metastable oxide films. Such low density films most often are deposited as disordered phases making them prone to crystallization and attendant densification when subjected to increased temperature and/or applied pressure. Inherent stress imparted during film deposition and its evolution during the transformation are evaluated from phonon frequency… more
Date: April 1, 1992
Creator: Exarhos, G.J. & Hess, N.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Elementary electron-molecule interactions and negative ion resonances at subexcitation energies and their significance in gaseous dielectrics

Description: Recent knowledge on low-energy (mostly approximately less than 10 eV) electron-molecule interaction processes in dilute and in dense gases is synthesized, discussed, and related to the breakdown strength of gaseous dielectrics. Optimal design of multicomponent gaseous insulators can be made on the basis of such knowledge.
Date: January 1, 1977
Creator: Christophorou, L G
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Ferroelectric ceramics for dielectric power conversion. Annual report, March 1, 1979-April 30, 1980

Description: Materials selected for study were those which could be expected to have useful Curie temperatures, resistivities, coercive fields, and Devonshire coefficients. Materials studied include PZT (lead-zirconia-titania system), Bi(Na,K)Ti/sub 2/O/sub 6/, rare earth titanoniobates, other tantalates and niobates, and thin films. Graphs are given for spontaneous polarization as a function of composition, temperature dependence of spontaneous polarization and coercive field for modified PSZT dielectrics,… more
Date: May 1, 1980
Creator: Payne, D. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A five-picosecond electron pulse from ANL (Argonne National Laboratory) L-Band Linac

Description: The pulse-compression system of the Argonne National Laboratory Chemistry Division L-Band Linac, presented at the 1986 Linear Accelerator Conference at Stanford, California, has been completed. A five-picosecond-wide electron pulse containing 6 {times} 10{sup {minus}9} coulomb charge has been achieved. Acceleration parameters and the pulse-width measurement technique are discussed, and future plans for the utilization of this pulse in radiation chemistry studies are presented. 5 refs., 4 figs.
Date: January 1, 1989
Creator: Cox, G. L.; Jonah, C. D.; Ficht, D. T.; Mavrogenes, G. S. & Sauer, M. C. Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Evaluation of unencapsulated ceramic monolithic and MOS thin-film capacitors (25 to 300/sup 0/C)

Description: Several commercial monolithic ceramic and thin-film MOS chip capacitors were evaluated for use in high temperature (300/sup 0/C) geothermal instrumentation. Characteristics of the commonly used dielectric materials (NPO, X7R, BX) and temperature dependence of the insulation resistance are briefly discussed. Some ceramic capacitors with NPO dielectric materials had insulation resistances above 10 megohms at 300/sup 0/C and less than 2% change in capacitance from 25/sup 0/C to 300/sup 0/C, while … more
Date: January 1, 1982
Creator: Nance, W.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Oak Ridge National Laboratory Review: Volume 24, Nos. 3 and 4, 1991

Description: Oak Ridge National Laboratory (ORNL) is a multiprogram, multipurpose laboratory that conducts research in the physical, chemical, and life sciences; in fusion, fission, and fossil energy; and in energy conservation and other energy-related technologies. This review contains articles on chemical extraction techniques, electron transport in gases and liquids, diamond films, the contribution of fossil fuels to the greenhouse effect, various sensors for safety applications, and temperature measurem… more
Date: January 1, 1991
Creator: Krause, C. (ed.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Evaluation of advanced technologies for power transformers. Final report. Part I, November 1976-March 1979

Description: The high insulating strength of certain gases, such as sulfur hexafluoride, when used at high pressure, suggests that there may be advantages to compressed gases as the insulating fluid in power transformers. However, simply exchanging the oil for compressed gas in an otherwise conventional transformer design will not yield a significant overall advantage. Compressed gases present the engineer with properties which are quite different from mineral oil. If gases are to be used as the major insul… more
Date: June 1, 1980
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Accomplishments of the Oak Ridge National Laboratory Seed Money program

Description: In 1974, a modest program for funding new, innovative research was initiated at ORNL. It was called the ''Seed Money'' program and has become part of a larger program, called Exploratory R and D, which is being carried out at all DOE national laboratories. This report highlights 12 accomplishments of the Seed Money Program: nickel aluminide, ion implantation, laser annealing, burn meter, Legionnaires' disease, whole-body radiation counter, the ANFLOW system, genetics and molecular biology, high… more
Date: September 1, 1986
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Simultaneous measurement of multilayered composites. Milestone report

Description: A theoretical treatment of the eddy current problem involving a two-layered conductor laminate is presented for a rectangular cross section coil, with experimental eddy current measurements indicating that a frequency of 1.5 MHz should be used to measure a 6.45 ..mu..m aluminum conductor, a 0.5 MHz frequency should be used to measure a 50.8 ..mu..m aluminum conductor, and a frequency of 30 MHz should be used to measure lift-off. The schematic and the basic design of a two-frequency microprocess… more
Date: June 1, 1980
Creator: Heckman, R. V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Electronegative gases

Description: Recent knowledge on electronegative gases essential for the effective control of the number densities of free electrons in electrically stressed gases is highlighted. This knowledge aided the discovery of new gas dielectrics and the tailoring of gas dielectric mixtures. The role of electron attachment in the choice of unitary gas dielectrics or electronegative components in dielectric gas mixtures, and the role of electron scattering at low energies in the choice of buffer gases for such mixtur… more
Date: January 1, 1981
Creator: Christophorou, L.G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Multiple-shot ultraviolet laser damage resistance of nonquarterwave reflector designs for 248 NM

Description: The damage resistance of multilayer dielectric reflectors designed for 248 nm has been substantially increased by use of nonquarterwave (QW) thicknesses for the top few layers. These designs minimize the peak standing-wave electric field in the high-index layers, which have proven to be weaker than the low-index components. Previous damage tests of infrared- and visible-wavelength reflectors based on these designs have produced variable results. However, at the ultraviolet wavelength of 248 nm,… more
Date: January 1, 1982
Creator: Newnam, B. E.; Foltyn, S. R. & Jolin, L. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Radiolysis studies on reactive intermediates. Final report, February 1, 1970-August 31, 1980

Description: Research highlights are briefly reviewed concerning studies of excess and solvated electrons, development of new electron spin resonance methods for maximizing the geometrical information about the surroundings of paramagnetic species in disordered systems, atom and ion solvation, and studies on other reactive intermediates. Titles of 155 research publications and 182 scientific talks presented on these areas are given.
Date: August 1, 1980
Creator: Kevan, L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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