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3-D Analysis on Arbitrarily-Shaped Icrf Antennas and Faraday Shields

Description: Cavity antennas with Faraday shields are proposed to couple ion cyclotron radio frequency power for heating fusion plasmas. This application requires small, high-power, low-frequency antennas. The results are presented of a theoretical study of the ICRF antennas being developed for this purpose at the Radio Frequency Test Facility (RFTF). The objectives of this work are to optimize experimental designs and to confirm test results. (MOW)
Date: January 1, 1986
Creator: Chen, G. L.; Whealton, J. H.; Baity, F. W.; Hoffman, D. J. & Owens, T. L.
Item Type: Refine your search to only Article
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350 MW(t) design fuel cycle selection. Revision 1

Description: This document discusses the results of this evaluation and a recommendation to retain the graded fuel cycle in which one-half of the fuel elements are exchanged at each refueling. This recommendation is based on the better performance of the graded cycle relative to the evaluation criteria of both economics and control margin. A choice to retain the graded cycle and a power density of 5.9 MW/m{sup 3} for the upcoming conceptual design phase was deemed prudent for the following reasons: the grad… more
Date: January 1986
Creator: Lane, R. K.; Lefler, W. & Shirley, G.
Item Type: Refine your search to only Report
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1986 annual information meeting. Abstracts

Description: Abstracts are presented for the following papers: Geohydrological Research at the Y-12 Plant (C.S. Haase); Ecological Impacts of Waste Disposal Operations in Bear Creek Valley Near the Y-12 Plant (J.M. Loar); Finite Element Simulation of Subsurface Contaminant Transport: Logistic Difficulties in Handling Large Field Problems (G.T. Yeh); Dynamic Compaction of a Radioactive Waste Burial Trench (B.P. Spalding); Comparative Evaluation of Potential Sites for a High-Level Radioactive Waste Repository… more
Date: January 1, 1986
Item Type: Refine your search to only Article
open access

27th Annual Report

Description: The ACIR Library is composed of publications that study the interactions between different levels of government. This document is an annual report.
Date: January 1986
Creator: United States. Advisory Commission on Intergovernmental Relations.
Item Type: Refine your search to only Book
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3d-3p transitions in (. mu. /sup -/He/sup 4/)/sup +/

Description: An experiment to measure the energy of 3d-3p transitions in the (..mu../sup -/He/sup 4/)/sup +/ ion is now in progress. The experiment, which is being performed at the Brookhaven National Laboratory Alternating Gradient Synchrotron, will use an infrared CO/sub 2/ laser to stimulate the transitions. These transitions are of interest because their energy is due almost entirely to the polarization of the vacuum. In a pure Coulomb field, states with the same principal quantum number, n, and total a… more
Date: January 1, 1986
Creator: May, M.
Item Type: Refine your search to only Article
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Accelerated beam experiments with the ORNL SITEX (Surface Ionization with Transverse Extraction) and VITEX (Volume Ionization with Transverse Extraction) H/sup -//D/sup -/ sources

Description: Beam parameters have been measured for both the Surface Ionization with Transverse Extraction (SITEX) and Volume Ionization with Transverse Extraction (VITEX) H/sup -//D/sup -/ ion sources. Both sources use a reflex discharge to generate the main plasma. Beam energies up to 18 keV were used for pulse lengths up to several seconds. For SITEX, Faraday cup magnetically analyzed D/sup -/ beam currents of 110 mA at extraction densities of 48 mA/cm/sup 2/ and at a source ion temperature of 4 eV have … more
Date: January 1, 1986
Creator: Dagenhart, W. K.; Tsai, C. C.; Stirling, W. L.; Ryan, P. M.; Schechter, D. E.; Whealton, J. H. et al.
Item Type: Refine your search to only Article
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Acceleration of electrons by the wake field of proton bunches

Description: This paper discusses a novel idea to accelerate low-intensity bunches of electrons (or positrons) by the wake field of intense proton bunches travelling along the axis of a cylindrical rf structure. Accelerating gradients in excess of 100 MeV/m and large ''transformer ratios'', which allow for acceleration of electrons to energies in the TeV range, are calculated. A possible application of the method is an electron-positron linear collider with luminosity of 10/sup 33/ cm/sup -2/ s/sup -1/. The… more
Date: January 1, 1986
Creator: Ruggiero, Alessandro G.
Item Type: Refine your search to only Article
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The acceptance of the SSC (Superconducting Supercollider) clustered lattice

Description: The physical apertures of all elements of the SSC storage lattices are considered to determine whether correction of random multipole fields in the triplet quadrupoles is necessary when betatron amplitudes there are no more than the inner radius of the beam pipe. During computer simulated beam tracking the influence of random multiple fields was included as a kick given to the test particle at the center of each quadrupole and at the ends of every dipole. The degree of multipole correction need… more
Date: January 1, 1986
Creator: Dell, G.F.
Item Type: Refine your search to only Article
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Accuracy of Nodal Transport and Simplified-P3 Fluxes in Benchmark Tests

Description: Here we summarize recent work exploring the accuracy of fluxes computed, both by nodal transport methods, and by the simplified-spherical harmonics (SP/sub l/) method. Apparently, significant errors in nodal transport fluxes were first noted by Wagner et al., and attributed to the isotopic-transverse-leakage (ITL) approximation. Later Lawrence detected substantial errors, due to the ITL approximation, in his nodal transport (NTT) solution of the IAEA Stepanek benchmark problem. Gelbard conclude… more
Date: January 1, 1986
Creator: Liu, Y.W.H. & Gelbard, E.M.
Item Type: Refine your search to only Article
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Accurate interatomic potentials for Ni, Al and Ni/sub 3/Al

Description: To obtain meaningful results from atomistic simulations of materials, the interatomic potentials must be capable of reproducing the thermodynamic properties of the system of interest. Pairwise potentials have known deficiencies that make them unsuitable for quantitative investigations of defective regions such as crack tips and free surfaces. Daw and Baskes (Phys. Rev. B 29, 6443 (1984)) have shown that including a local ''volume'' term for each atom gives the necessary many-body character with… more
Date: January 1, 1986
Creator: Voter, Arthur F. & Chen, Shao Ping
Item Type: Refine your search to only Article
open access

Acid-split flowsheets for uranium-plutonium partitioning without a reductant

Description: The flowsheet discussed has been tested in a hot cell experiment using 10% TBP and a poorly controlled temperature near 15/sup 0/C. The test was carried out in the Solvent Extraction Test Facility at Oak Ridge National Laboratory, using highly irradiated mixed-oxide fuel from the Fast Flux Test Facility reactor at Hanford, Washington. The observed concentration profiles for U, Pu, and acid are shown graphically.
Date: January 1, 1986
Creator: Campbell, D.O.; Crouse, D.J. & Mills, A.L.
Item Type: Refine your search to only Article
open access

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
open access

Acoustic velocity measurements on fluid metals from two-fold compressions to two-fold expansions

Description: Methods used for making acoustic velocity measurements on samples which are destroyed in time scales of milliseconds or less are described. Analytic techniques for using this data to calculate thermodynamic quantities are outlined. New results indicating a linear relationship of acoustic velocity with density over a very large density range are presented. 30 refs., 5 figs. (DWL)
Date: January 1, 1986
Creator: Shaner, J. W.; Hixson, R. S.; Winkler, M. A. & Brown, J. M.
Item Type: Refine your search to only Article
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Acoustic wave scattering from a circular crack: comparison of different computational methods

Description: The work reported was motivated by disagreement between the results obtained from two computations of scattering of an axially incident elastic p-wave on a circular crack. One calculation involves the direct solution of the Helmholtz integral equation, showing an oscillating total cross section. The other uses a program called MOOT, in which the elastic displacement near the crack is expanded in regular spherical eigenfunctions of the elastic wave equation. This calculation shows that the oscil… more
Date: January 1, 1986
Creator: Visscher, W.M.
Item Type: Refine your search to only Article
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Actinide removal from nitric acid waste streams

Description: Actinide separations research at the Rocky Flats Plant (RFP) has found ways to significantly improve plutonium secondary recovery and americium removal from nitric acid waste streams generated by plutonium purification operations. Capacity and breakthrough studies show anion exchange with Dowex 1x4 (50 to 100 mesh) to be superior for secondary recovery of plutonium. Extraction chromatography with TOPO(tri-n-octyl-phosphine oxide) on XAD-4 removes the final traces of plutonium, including hydroly… more
Date: January 1, 1986
Creator: Muscatello, A.C. & Navratil, J.D.
Item Type: Refine your search to only Article
open access

Activation analysis of the compact ignition tokamak

Description: The US fusion program has completed the conceptual design of a compact tokamak device that achieves ignition. The high neutron wall loadings associated with this compact deuterium-tritium-burning device indicate that radiation-related issues may be significant considerations in the overall system design. Sufficient shielding will be requied for the radiation protection of both reactor components and occupational personnel. A close-in igloo shield has been designed around the periphery of the to… more
Date: January 1, 1986
Creator: Selcow, E.C.
Item Type: Refine your search to only Article
open access

Active internal corrector coils

Description: Trim or corrector coils to correct main magnet field errors and provide higher multipole fields for beam optics purposes are a standard feature of superconducting magnet accelerator systems. This paper describes some of the design and construction features of powered internal trim coils and a sampling of the test results obtained.
Date: January 1, 1986
Creator: Thompson, P.A.; Cottingham, J.; Dahl, P.; Fernow, R.; Garber, M.; Ghosh, A. et al.
Item Type: Refine your search to only Article
open access

Active layer hydrology for Imnavait Creek, Toolik, Alaska

Description: In the annual hydrologic cycle, snowmelt is the most significant event at Imnavait Creek located near Toolik Lake, Alaska. Precipitation that has accumulated for more than 6 months on the surface melts in a relatively short period of 7 to 10 days once sustained melting occurs. During the ablation period, runoff dominates the hydrologic cycle. Some meltwater goes to rewetting the organic soils in the active layer. The remainder is lost primarily because of evaporation, since transpiration is not… more
Date: January 1, 1986
Creator: Kane, D.L.
Item Type: Refine your search to only Report
open access

Activities and Operations of the Advanced Computing Research Facility. January 1985 - July 1986

Description: This report discusses research activities and operations of the Advanced Computing Research Facility (ACRF) at Argonne National Laboratory from January 1985 through June 1986. During this period, the Mathematics and Computer Science Division (MCS) at Argonne received incremental funding from the Applied Mathematical Sciences program of the DOE Office of Energy Research to operate computers with innovative designs that promise to be useful for advanced scientific research. Over a five-month peri… more
Date: 1986
Creator: Mihaly, Tina & Pieper, Gail W.
Item Type: Refine your search to only Report
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Activities and Operations of the Advanced Computing Research Facility : July - October 1986

Description: Research activities and operations of the Advanced Computing Research Facility (ACRF) at Argonne National Laboratory are discussed for the period from July 1986 through October 1986. The facility is currently supported by the Department of Energy, and is operated by the Mathematics and Computer Science Division at Argonne. Over the past four-month period, a new commercial multiprocessor, the Intel iPSC-VX/d4 hypercube was installed. In addition, four other commercial multiprocessors continue to… more
Date: 1986
Creator: Pieper, Gail W.
Item Type: Refine your search to only Report
open access

Additional measurements of the radiation environment at the Los Alamos Spallation Radiation Effects Facility at LAMPF

Description: Foil activation dosimetry experiments were conducted in a ''rabbit'' system at the completed Los Alamos Spallation Radiation Effects Facility (LASREF). The ''raffit'' system contains four tubes spaced radially outward 0.12, 0.18, 0.27, and 0.38 meters off beam centerline. Foils were irradiated for 3 to 62 hours to measure the neutron flux and energy spectrum radially from beam centerline, along the beamline, and the effect of the Isotope Production (IP) target loadings on the neutron flux in th… more
Date: January 1, 1986
Creator: Davidson, D. R.; Reedy, R. C.; Greenwood, L. R.; Sommer, W. F. & Wechsler, M. S.
Item Type: Refine your search to only Article
open access

Additional short-term plutonium urinary excretion data from the 1945-1947 plutonium injection studies

Description: The amount of plutonium excreted per day following intravenous injection was shown to be significantly higher than predicted by the Langham power function model. Each of the Los Alamos National Laboratory notebooks used to record the original analytical data was studied for details that could influence the findings. It was discovered there were additional urine excretion data for case HP-3. This report presents the additional data, as well as data on case HP-6. (ACR)
Date: January 1, 1986
Creator: Moss, W.D. & Gautier, M.A.
Item Type: Refine your search to only Article
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