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ICRF antenna and feedthrough development at ORNL

Description: The rf technology program at Oak Ridge National Laboratory is highlighted. Simply stated, the objective of the program is to develop the technology for ion cyclotron range of frequencies heating of the fusion machines leading up to a reactor. Results from an investigation of the importance of current strap shaping in compact antenna design are presented. Designs of the Doublet III-D and Advanced Toroidal Facility compact loop launchers are described, as are the vacuum feedthroughs for the West … more
Date: January 1, 1985
Creator: Baity, F. W.; Bryan, W. E.; Hoffman, D. J.; Owens, T. L.; Rettig, C. L. & Schechter, D. E.
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Partner: UNT Libraries Government Documents Department
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Corrosion of Fe-Cr-Mn alloys in thermally convective lithium

Description: A series of austenitic Fe-Cr-Mn steels was exposed to circulating lithium at temperatures up to 500/sup 0/C. Two groups of the alloys, which contained 12 to 30 wt % Mn and 2 to 20 wt % Cr, were sequentially exposed for periods greater than 3000 h in a type 316 stainless steel thermal convection loop. Mass transfer of manganese caused very large weight losses from the steels containing 30 wt % Mn. However, the actual magnitude of corrosion losses for alloys containing 12 to 20 wt % Mn was diffic… more
Date: January 1, 1986
Creator: Tortorelli, P. F. & DeVan, J. H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Rio Blanco massive hydraulic fracture well RB-MHF-3. Final report

Description: The Rio Blanco Massive Hydraulic Fracturing Project was fielded in 1974 as a joint Industry/ERDA demonstration to test the relative effectiveness of MHF in the same formations that were stimulated by the Rio Blanco nuclear fracturing experiment. The project is essentially a companion effort to and a continuation of the preceding nuclear stimulation project, which took place in May, 1973. The well was fractured a total of four times, twice in the Upper Mesaverde and twice in the Fort Union. A fi… more
Date: December 29, 1978
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Performance comparisons of low emittance lattices

Description: In this paper, the results of a performance analysis of several low emittance electron storage ring lattices provided by various members of the Lattice Working Group are presented. Altogether, four lattices were investigated. There are two different functions being considered for the low beam emittance rings discussed here. The first is to serve as a Damping Ring (DR), i.e., to provide the emittance damping required for a high energy linear collider. The second is to provide beams for a short w… more
Date: May 1, 1987
Creator: Delahaye, J. P. & Zisman, M. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Application of SAFE to an operating reactor

Description: A method for the evaluation of physical protection systems at nuclear facilities has been developed. The evaluation process consists of five major phases: (1) Facility Characterization, (2) Facility Representation, (3) Component Performance, (4) Adversary Path Analysis, and (5) Effectiveness Evaluation. Each of these phases will be described in some detail and illustrated by examples. The process for evaluation of physical protection system effectiveness against an outside threat will be presen… more
Date: January 1, 1979
Creator: Chapman, L.D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Kokanee Stock Status and Contribution Cabinet Gorge Hatchery, Lake Pend Oreille, Idaho, 1988 Annual Progress Report.

Description: The kokanee Oncorhynchus nerka rehabilitation program for Lake Pend Oreille continued to show progress during 1988. Estimated kokanee abundance in early September was 10.2 million fish. This estimate is 70% higher than 1987 and 140% higher than the populations's low point in 1986. Increased population size over the past two years is the result of two consecutive strong year classes produced from high recruitment of hatchery and wild fry. High recruitment of wild fry in 1988 resulted from good p… more
Date: February 1, 1989
Creator: Bowles, Edward C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Texture characterization of high T sub c thick films

Description: The anisotropic properties which exist in all high-{Tc} compounds make it necessary to characterize the preferred orientation (or texture) of crystals which results from various processing methods. Once a suitable preferred orientation is achieved, a significant increase in performance is anticipated. In this study, thick films ({approximately}80 {mu}m) of Bi-Sr-Ca-Cu-O (BSCCO) on silver substrates were characterized by pole figure techniques to obtain an Orientation Distribution Function (ODF)… more
Date: June 1, 1990
Creator: Biondo, A.C.; Kallend, J.S.; Poeppel, R.B.; Lanagan, M.T. (Argonne National Lab., IL (USA)) & Schofield, T.C. (Los Alamos National Lab., NM (USA))
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Partner: UNT Libraries Government Documents Department
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Acoustic damping for explicit calculations of fluid flow at low Mach number

Description: A method is proposed for damping the sound waves in explicit calculations of fluid flow at low Mach number, where sound waves are usually not of interest but may distract attention from other flow features. The method is based on the introduction of an artificial pressure q of the form q = - q/sub 0/rhoc/sup 2/..delta..t(del x u - del x u/sub 0/), where q/sub 0/ is a coefficient of order unity, rho is the density, c is the sound speed, ..delta..t is the time step, and u/sub 0/ is the velocity f… more
Date: January 1, 1986
Creator: Ramshaw, J. D.; O'Rourke, P. J. & Amsden, A. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Composite materials for Tokamak wall armor, limiters, and beam dump applications

Description: This paper describes materials which are composites of carbon fibers and low Z number carbides. The composite materials are fabricated by applying chemical vapor deposition (CVD) coats of either low Z number elements (i.e., boron, titanium, silicon, or nickel) or carbides (B/sub 4/C, TiC, or SiC) onto graphite fibers, in the form of yarn, cloth, or three-dimensional structures, and then hot pressing the coated material to full density. The benefits of this approach are: (1) Each graphite filame… more
Date: January 1, 1979
Creator: Riley, R. E.; Wallace, T. C. & Dickinson, J. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Economics of hydrogen production

Description: Much of the current interest in hydrogen (H/sub 2/) centers around its potential to displace oil and gas as a fuel. The results of this study should be useful to research and development managers making funding decisions, and they should also be of interest to energy analysts, economists, and proponents of a hydrogen economy. We examined the current costs of H/sub 2/ produced by commercially available technologies (from fossil fuels and by electrolysis) and projected these costs to 2010, to set… more
Date: January 1, 1984
Creator: Gaines, L. L. & Wolsky, A. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Oxygen-enriched diesel engine performance: A comparison of analytical and experimental results

Description: Use of oxygen-enriched combustion air in diesel engines can lead to significant improvements in power density, as well as reductions in particulate emissions, but at the expense of higher NO{sub x} emissions. Oxygen enrichment would also lead to lower ignition delays and the opportunity to burn lower grade fuels. Analytical and experimental studies are being conducted in parallel to establish the optimal combination of oxygen level and diesel fuel properties. In this paper, cylinder pressure da… more
Date: January 1, 1990
Creator: Sekar, R.R.; Marr, W.W.; Cole, R.L.; Marciniak, T.J. (Argonne National Lab., IL (USA)); Assanis, D.N. (Illinois Univ., Urbana, IL (USA)) & Schaus, J.E. (Autoresearch Labs., Inc., Chicago, IL (USA))
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Partner: UNT Libraries Government Documents Department
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Silicon surface barrier detector application to pulsed neutron measurements

Description: The efficiency of a silicon surface-barrier detector with a proton radiator for detecting 14 MeV neutrons was measured as 0.29% using a polyethylene radiator, and 0.34% using a paraffin radiator. Absolute fluence and timing information can be obtained by counting the number and time distribution of pulses from the radiator/surface-barrier detector. Fluence values with an accuracy better than +- 10% could be obtained with a single 1 cm/sup 2/ detector at fluence levels greater than 3.5 x 10/sup … more
Date: February 1, 1979
Creator: Dolan, K.W. & Sundahl, R.O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Charm particle production by neutrinos

Description: Further evidence is discussed, and confirmation given of the existence of the ..lambda../sub c//sup +/ (2260) and ..sigma../sub c//sup + +/ (2424) charm baryons, as well as the observation of the D/sup + +/ (2000) charm meson, these states all being produced by neutrino interactions. Also a brief review is given of the status of (..mu../sup -/e/sup +/) di-lepton neutrino production in bubble chambers, especially as it affects charm production. (JFP)
Date: January 1, 1979
Creator: Samios, N. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Diagnostic technique for monitoring high temperature plasma dynamics

Description: A preliminary design for the adaptation of a pinhole experiment (PINEX) technique to the monitoring of the dynamics of high temperature plasmas is described. Specifically, this imaging technique uses a thick aperture, an efficient radiation converter, and highly intensified television cameras to provide real-time viewing of radiation sources such as the neutron emissions from d-d and d-t fusion reactions in controlled thermonuclear research devices. The neutron emission strengths, R approx. 5 x… more
Date: June 1, 1987
Creator: Lumpkin, A. H. & Pappas, D. S.
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Partner: UNT Libraries Government Documents Department
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Beta dosimetry using pulsed laser heating of TLD materials

Description: Use of a pulsed CO/sub 2/ laser to heat the surface of hot-pressed LiF chips has been investigated. The thermoluminescent traps in the first 10 to 20 ..mu..m of depth may be read out with good efficiency, which will allow entrance dose and exit dose to be determined using a standard chip. These dose data can be used to calculate beta dose and gamma dose separately. Readout speed is estimated to be a few milliseconds per chip.
Date: January 1, 1983
Creator: Quam, W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Measurement and deconvolution of detector response time for short HPM pulses: Part 1, Microwave diodes

Description: A technique is described for measuring and deconvolving response times of microwave diode detection systems in order to generate corrected input signals typical of an infinite detection rate. The method has been applied to cases of 2.86 GHz ultra-short HPM pulse detection where pulse rise time is comparable to that of the detector; whereas, the duration of a few nanoseconds is significantly longer. Results are specified in terms of the enhancement of equivalent deconvolved input voltages for gi… more
Date: June 1, 1987
Creator: Bolton, P.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Visualization of drug-nucleic acid interactions at atomic resolution. IV. Structure of an aminoacridine/dinucleoside monophosphate crystalline complex, 9-aminoacridine: 5-iodocytidylyl(3'-5')guanosine

Description: 9-Aminoacridine forms a crystalline complex with the dinucleoside monophosphate, 5-iodocytidylyl(3'-5')guanosine (iodoCpG). These crystals are monoclinic, space group P2/sub 1/, with a = 13.98 A, b = 30.58 A, c = 22.47 A and ..beta.. = 113.9. The structure has been solved to atomic resolution by Patterson and Fourier methods, and refined by a combination of Fourier and sum function Fourier methods. The asymmetric unit contains four 9-aminoacridine molecules, four iodoCpG molecules and 21 water … more
Date: January 1, 1979
Creator: Sakore, T. D.; Reddy, B. S. & Sobell, H. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Abstracts and research accomplishments of university coal research projects

Description: The Principal Investigators of the grants supported by the University Coal Research Program were requested to submit abstracts and highlight accomplishments of their projects in time for distribution at a grantees conference. This book is a compilation of the material received in response to the request. Abstracts discuss the following area: coal science, coal surface science, reaction chemistry, advanced process concepts, engineering fundamentals and thermodynamics, environmental science.
Date: June 1, 1991
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Partner: UNT Libraries Government Documents Department
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Development of enhanced heat transfer/transport/storage slurries for thermal-system improvement

Description: This paper presents a formulation of a new concept for improving thermal-system performance by utilizing the combined mechanisms of enhanced heat transfer, transport, and thermal-energy storage associated with a phase-change slurry as the working fluid.
Date: January 1, 1983
Creator: Kasza, K. E. & Chen, M. M.
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Partner: UNT Libraries Government Documents Department
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LOFT CIS analysis: 1''-PCC-76-A inside containment penetration S-1A. Internal technical report

Description: The stress analysis performed on the 1''-PCC-76-A piping system inside containment penetration S-1A is described. Deadweight, thermal expansion, and seismic loads were considered. Results of this analysis show that the subject piping system will meet ASME Boiler and Pressure Vessel Code, Section III, Class 2 requirements provided that supports S8 and S9 are installed as recommended.
Date: December 11, 1978
Creator: Nitzel, M.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Use of a semi-opaque beamstop for monitoring sample transmissions at GLAD (Glass, Liquid, and Amorphous Materials Diffractometer)

Description: Accurate corrections for many types of measurements made on time-of-flight neutron diffractometers require data on the macroscopic transmission cross-section of the sample used, and this data must span the entire wavelength range covered by the instrument. This report describes a transmission monitor consisting of a semi-opaque beamstop in from of a portion of the array of position-sensitive detectors used for diffraction measurements on the GLAD prototype. The semi-opaque beamstop was made of … more
Date: January 1, 1990
Creator: Montague, D.G.; Carpenter, J.M.; Crawford, R.K.; Dejus, R.; Price, D.L. & Susman, S.
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Partner: UNT Libraries Government Documents Department
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Reactor safety research programs. Quarterly report, January 1--March 31, 1979. [BWR; PWR]

Description: Progress is summarized in the following LWR safety-related studies: (1) ultimate heat sink performance; (2) verification of steady-state fuel performance computer codes; (3) acoustic emission-flow relationship for pressure vessel monitoring; (4) fuel subassembly procurement and irradiation; (5) steam generator tube integrity prediction; (6) core thermal model development; and (7) integration of nondestructive examination reliability and fracture mechanics. (HDR)
Date: May 1, 1979
Creator: Hooper, J.L. (comp.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A superconducting short period undulator for a harmonic generation FEL experiment

Description: A three stage superconducting (SC) undulator for a high gain harmonic generation (HGE) FEL experiment in the infrared is under construction at the NSLS in collaboration with Grumman Corporation. A novel undulator technology suitable for short period (6--40mm) undulators will be employed for all three stages, the modulator, the dispersive section and the radiator. The undulator triples the frequency of a 10.4[mu]m CO[sub 2] seed laser. So far a 27 period (one third of the final radiator) prototy… more
Date: January 1, 1993
Creator: Ingold, G.; Solomon, L.; Ben-Zvi, Ilan; Krinsky, S.; Li, D.; Lynch, D. et al.
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Partner: UNT Libraries Government Documents Department
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Selection of power plant elements for future space electric power systems

Description: A study on the type of nuclear reactor power plants that should be developed for future space missions is described. After careful consideration of power plant configuration weights, sizes, reliabilities, safety, development cost and time, the configuration selected to be pursued was a heat-pipe reactor design with thermoelectric converters and heat-pipe radiator.
Date: January 1, 1979
Creator: Buden, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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