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Ceramic breeder materials

Description: The breeding blanket is a key component of the fusion reactor because it directly involves tritium breeding and energy extraction, both of which are critical to development of fusion power. The lithium ceramics continue to show promise as candidate breeder materials. This promise was recognized by the International Thermonuclear Reactor (ITER) design team in its selection of ceramics as the first option for the ITER breeder material. Blanket design studies have indicated properties in the candi… more
Date: January 1, 1990
Creator: Johnson, C. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Interim performance criteria for photovoltaic energy systems. [Glossary included]

Description: This document is a response to the Photovoltaic Research, Development, and Demonstration Act of 1978 (P.L. 95-590) which required the generation of performance criteria for photovoltaic energy systems. Since the document is evolutionary and will be updated, the term interim is used. More than 50 experts in the photovoltaic field have contributed in the writing and review of the 179 performance criteria listed in this document. The performance criteria address characteristics of present-day phot… more
Date: December 1, 1980
Creator: DeBlasio, R.; Forman, S.; Hogan, S.; Nuss, G.; Post, H.; Ross, R. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Evaluation of Phase III U-02 proof test materials

Description: Ten electrode and four insulator materials were evaluated as candidate materials for the third US/USSR joint test of electrode walls in the U-02 facility in Moscow. This evaluation was made on the basis of three proof tests conducted in the Westinghouse Electrode Systems Test Facility and the subsequent post-test material analysis. Three hot pressed electrodes based upon LaCrO/sub 3/ and sintered insulators of HgO and MgAl/sub 2/O/sub 4/ were judged to be most resistive to the anticipated U-02 … more
Date: March 1, 1977
Creator: Rossing, B. R.; Cadoff, L. H.; Kuszyk, J. A.; Marchant, D.; Bates, J. L.; Negas, T. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Silicon ingot casting - heat exchanger method (HEM); multi-wire slicing - fixed abrasive slicing technique (FAST). Phase IV. Silicon sheet growth development for the Large Area Sheet Task of the Low-Cost Solar Array Project. Quarterly progress report No. 4, October 1-December 31, 1980

Description: The crystallinity of large-size ingots has been studied as a function of the heat flow conditions at the bottom of the ingot. The size of the ingot has an important effect on crystallinity. The breakdown in crystallinity across the bottom has been resolved to an area in the vicinity of the melted-back seed. Generally, homogeneous resistivity distribution has been achieved all over the ingot. Electroplating of diamonds on one side of the wirepack has an important effect on slicing performance. H… more
Date: February 1, 1981
Creator: Schmid, F.; Khattak, C.P. & Basaran, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Preparation and properties of evaporated CdTe films compared with single-crystal CdTe. Progress report No. 5, November 1, 1981-January 31, 1982

Description: The hot-wall vacuum evaporator system has been put into use with successful deposition of seven thin films of n-type CdTe on glass. Microprobe analysis indicated that the films were stoichiometric CdTe. Optical transmission showed a well-defined absorption edge. Film resistivities on glass were reduced from 1.7 x 10/sup 8/ ohm-cm, to 6 x 10/sup 4/ ohm-cm by In doping; film resistivities under AM1.5 illumination are 2.0 x 10/sup 4/ and 5 x 10/sup 2/ ohm-cm, respectively compared to the dark valu… more
Date: January 1, 1982
Creator: Bube, R H
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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National Institute for Petroleum and Energy Research quarterly technical report, July 1--September 30, 1990

Description: Research programs from NIPER are briefly summarized. Topics include: Development of Analytical Methodology for Analysis of Heavy Crudes, and Thermochemistry and Thermophysical Properties of Organic Nitrogen- and Diheteroatom-Containing Compounds. 1 ref.
Date: October 12, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Critical current density, irreversibility line, and flux creep activation energy in silver-sheathed Bi[sub 2]Sr[sub 2]Ca[sub 2]Cu[sub 3]O[sub x] superconducting tapes

Description: Transport data, magnetic hysteresis and flux creep activation energy experimental results are presented for silver-sheathed high-[Tc] Bi[sub 2]Sr[sub 2]Ca[sub 2]Cu[sub 3]O[sub x] superconducting tapes. The 110 K superconducting phase was formed by lead doping in a Bi-Sr-Ca-Cu-0 system. The transport critical current density was measured at 4.0 K to be 0.7 [times] 10[sup 5] A/cm[sup 2] (the corresponding critical current is 74 A) at zero field and 1.6 [times] 10[sup 4] A/cm[sup 2] at 12 T for H[… more
Date: August 1, 1992
Creator: Shi, D.; Wang, Z.; Sengupta, S.; Smith, M. (Argonne National Lab., IL (United States)); Goodrich, L.F. (National Inst. of Standards and Technology (NEL), Boulder, CO (United States). Electromagnetic Technology Div.); Dou, S.X. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Enhancements of the Critical Currents of YBaCuO Single Crystals by Neutron (n) and Proton (p) Irradiation

Description: We present results of magnetization hysteresis and [Tc] measurements of neutron and proton irradiated YBaCuO single crystals. The crystals used for comparison were irradiated to a fluence of 2[times]10[sup 7]n/cm[sup 2] (n,E [gt] 0.1MeV) and 1[times]10[sup 16]p/cm[sup 2] (p,E=3.5MeV). The critical currents at 1T and 10K are enhanced by a factor of 5 for the neutron irradiated and a factor of 9 for the proton irradiated sample respectively. After irradiation the crystals were annealed at 100, 20… more
Date: January 1, 1992
Creator: Vlcek, B. M.; Frischherz, M. C.; Vishwanathan, H.K.; Welp, U.; Crabtree, G.W. & Kirk, M. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Evaluation of low-temperature geothermal potential in Cache Valley, Utah. Report of investigation No. 174

Description: Field work consisted of locating 90 wells and springs throughout the study area, collecting water samples for later laboratory analyses, and field measurement of pH, temperature, bicarbonate alkalinity, and electrical conductivity. Na/sup +/, K/sup +/, Ca/sup +2/, Mg/sup +2/, SiO/sub 2/, Fe, SO/sub 4//sup -2/, Cl/sup -/, F/sup -/, and total dissolved solids were determined in the laboratory. Temperature profiles were measured in 12 additional, unused walls. Thermal gradients calculated from the… more
Date: November 1, 1982
Creator: de Vries, J.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Dynamic structural analysis of a head assembly for a large loop-type LMFBR

Description: An investigation is presented on the dynamic structural response of the primary vessel's head closure to slug impact loadings generated from a 1000 MJ source term. The reference reactor considered was designed in a loop configuration. The head structure consisted of a deck and a triple rotatable plug assembly. Two designs were considered for the deck structure: a reference design and an alternate design. The reference deck was designed as a single flat annular plate. For the alternate design, t… more
Date: January 1, 1984
Creator: Kulak, R.F. & Fiala, C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Ultra-fine coal characterization. 2nd quarterly report, June 1, 1984-August 31, 1984

Description: This report covers the second quarter of activity on the project to characterize the mineral-matter liberation and the beneficiation of ultra-fine coal. So far the work has been confined to the base-case coal from the Illinois No. 6 seam. Eight other coals will be examined later in the program. The work accomplished this quarter, and described in this report, included determination of additional bulk properties of the coal, an examination of the mineral-matter and mineral associations in the co… more
Date: September 19, 1984
Creator: Smit, F. J. & Odekirk, J. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Monte Carlo simulations of temperature-programmed and isothermal desorption from single-crystal surfaces

Description: The kinetics of temperature-programmed and isothermal desorption have been simulated with a Monte Carlo model. Included in the model are the elementary steps of adsorption, surface diffusion, and desorption. Interactions between adsorbates and the metal as well as interactions between the adsorbates are taken into account with the Bond-Order-Conservation-Morse-Potential method. The shape, number, and location of the TPD peaks predicted by the simulations is shown to be sensitive to the binding … more
Date: August 1, 1990
Creator: Lombardo, S.J. (California Inst. of Tech., Pasadena, CA (USA). Dept. of Chemical Engineering Lawrence Berkeley Lab., CA (USA))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Loss of coolant analysis for the tower shielding reactor 2

Description: The operational limits of the Tower Shielding Reactor-2 (TSR-2) have been revised to account for placing the reactor in a beam shield, which reduces convection cooling during a loss-of-coolant accident (LOCA). A detailed heat transfer analysis was performed to set operating time limits which preclude fuel damage during a LOCA. Since a LOCA is survivable, the pressure boundary need not be safety related, minimizing seismic and inspection requirements. Measurements of reactor component emittance … more
Date: June 1, 1990
Creator: Radcliff, T.D. & Williams, P.T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Light scattering studies of solids and atomic vapors

Description: The general technique of light scattering and luminescence was used to study the properties of a number of material systems. First, multi-phonon resonant Raman scattering up to four phonons in GaSe and one- and two-phonon resonant Raman scattering in the mixed GaS/sub x/Se/sub 1-x/ crystals with x < or = 0.23 were investigated. Second, the observation of one-phonon resonant Raman scattering in HfS/sub 2/ is reported. The result is used to determine the position of the direct gap of HfS/sub 2/. … more
Date: September 1, 1978
Creator: Chiang, T.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Definition of Engineering Development and Research Problems Relating to the Use of Geothermal Fluids for Electric Power Generation and Nonelectric Heating

Description: The use of geothermal fluids for electric power generation and nonelectric purposes causes problems not normally encountered when pure water is used for similar purposes. These problems must be identified and means developed to overcome them before geothermal energy resources can become an important source of electric power or thermal energy in the United States. Research and development projects aimed at solving problems arising from the use of geothermal fluids from known sources in the Unite… more
Date: November 1, 1977
Creator: Apps, J. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Safety Analysis Report for Packaging: The unirradiated fuel shipping container USA/9853/AF

Description: The HFBR Unirradiated Fuel Shipping Container was designed and fabricated at the Oak Ridge National Laboratory in 1978 for the transport of fuel for the High Flux Beam Reactor (HFBR) for Brookhaven National Laboratory. The package has been evaluated analytically, as well as the comparison to tests on similar packages, to demonstrate compliance with the applicable regulations governing packages in which radioactive and fissile materials are transported. The contents of this Safety Analysis Repor… more
Date: October 18, 1991
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Studies of degenerate and nearly degenerate four wave mixing of laser radiation in plasmas

Description: Optical Phase Conjugation is an area of nonlinear optics with a wide variety of potential applications. One method of generating as phase conjugate signal is with four wave mixing (FWM). In FWM, three input beams interact in a nonlinear medium, and a fourth beam is produced that is the phase conjugate of one of the input waves. Degeneate Four Wave Mixing (DFWM) is a special case of FWM in which all of the beams are at the same frequency. In a plasma, DFWM is an effective technique for phase con… more
Date: December 1, 1990
Creator: Joshi, Chan (California Univ., Los Angeles, CA (USA). Dept. of Electrical Engineering)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The evaporative vector: Homogeneous systems

Description: Molecular beams of van der Waals molecules are the subject of much current research. Among the methods used to form these beams, three-sputtering, laser ablation, and the sonic nozzle expansion of neat gases - yield what are now recognized to be ''warm clusters.'' They contain enough internal energy to undergo a number of first-order processes, in particular that of evaporation. Because of this evaporation and its attendant cooling, the properties of such clusters are time-dependent. The states… more
Date: May 1, 1987
Creator: Klots, C.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Low-cost CdZnTe devices for cascade cell application

Description: This report describes a research program to develop a low-cost technique for producing Cd{sub 1-x}Zn{sub x}Te devices for cascade solar cell applications. The technique involves a two-stage process for fabricating such devices with a band gap of about 1.7 eV and a transparent contact layer of low-resistivity ZnTe. In the first stage, thin films of Cd, Zn, and Te are deposited in stacked layers as Cd{sub 1-x}An{sub x}Te. The second stage involves hearing and reacting the layers to form the compo… more
Date: November 1, 1990
Creator: Basol, B.M. & Kapur, V.K. (International Solar Electric Technology, Inglewood, CA (USA))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Calculation of transmutation in copper and comparison with measured electrical properties

Description: Calculations of the transmutation of pure cooper have been performed for the Fast Flux Test Facility/Materials Open Test Assembly (FFTF/MOTA) and for the STARFIRE first-wall fusion reactor. The principal transmutation products in decreasing order of importance are nickel, zinc, and cobalt. Contrary to previously published calculations, nickel and zinc are produced at nearly equal rates in FFTF, but cobalt is insignificant. The fusion reactor case shows much higher transmutation rates and produc… more
Date: August 1, 1993
Creator: Greenwood, L. R.; Garner, F. A. & Edwards, D. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Influence of point defects on grain boundary diffusion in oxides

Description: The influence of point defects on grain boundary diffusion of Co ions in NiO was studied using polycrystalline films and bicrystals. Grain boundary diffusion was studied at 750 C at oxygen partial pressure. Two diffusion regions were found. At low oxygen pressures, extrinsic diffusion was observed. Above oxygen pressure of 10{sup {minus}7}, influence of intrinsic point defects was detected. It was determined that grain boundary diffusion was > 3 orders of magnitude faster than volume diffusion.… more
Date: March 15, 1991
Creator: Stubican, V. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Results from electrolysis test of a prototype inert anode: Inert Electrode Program

Description: Nonconsumable or inert anodes are being developed at the Pacific Northwest Laboratory (PNL)({sup a}) for use in the electrolytic production of aluminum. A series of laboratory test on the laboratory scale (Hart et al. 1987; Strachan et al. 1989; Marschman 1989) has shown the technology to be potentially feasible. A series of larger-scale experiments are now being run to determine the viability of the technology on a commercial scale. The results reported here are from a test performed at the Re… more
Date: May 1, 1990
Creator: Strachan, D. M.; Windisch, C. F. Jr.; Koski, O. H.; Morgan, L. G. (Pacific Northwest Lab., Richland, WA (USA)); Peterson, R. D.; Richards, N. E. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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User manual for GEOCOST: a computer model for geothermal cost analysis. Volume 2. Binary cycle version

Description: A computer model called GEOCOST has been developed to simulate the production of electricity from geothermal resources and calculate the potential costs of geothermal power. GEOCOST combines resource characteristics, power recovery technology, tax rates, and financial factors into one systematic model and provides the flexibility to individually or collectively evaluate their impacts on the cost of geothermal power. Both the geothermal reservoir and power plant are simulated to model the comple… more
Date: March 1, 1976
Creator: Huber, H. D.; Walter, R. A. & Bloomster, C. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Applications of time-differential perturbed angular correlations to the study of solids

Description: Time-differential perturbed angular correlation techniques were applied to a systematic study of insulating antiferromagnets and rare-earth intermetallic alloys doped with either /sup 111m/Cd or $sup 111$In. The internal magnetic fields and electric field gradients at the radioactive nucleus are deduced from the experimentally measured perturbation factors. The analysis of fluoride, chloride, oxide, and sulfide data shows the systematic variation of the observed supertransferred hyperfine field… more
Date: June 1, 1975
Creator: Schwartz, G.P.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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