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Analytical model for the dynamic resistivity of electrically-exploded conductors

Description: A detailed model for the dynamic resistivity of an exploding conductor presents many difficulties. An electrically-exploded conductor undergoes significant hydrodynamic expansion as it is heated. Resistivity is a function of both the temperature and density of a conductor and realistic models for resistivity over the range of parameter space experienced by an exploding conductor are quite complex. See for example, the model of Lee and More (1984). Calculation of the hydrodynamic expansion of th… more
Date: October 10, 1986
Creator: Lee, R. S.
Item Type: Refine your search to only Article
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The ATLAS Positive-Ion Injector project

Description: The goal of the Argonne Positive Ion Injector project is to replace the ATLAS tandem injector with a facility which will increase the beam currents presently available by a factor of 100 and to make available at ATLAS essentially all beams including uranium. The beam quality expected from the facility will be at least as good as that of the tandem based ATLAS. The project combines two relatively new technologies - the electron cyclotron resonance ion source, which provides high charge state ion… more
Date: November 10, 1986
Creator: Pardo, R.C.; Bollinger, L.M. & Shepard, K.W.
Item Type: Refine your search to only Report
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Calculated photon KERMA factors based on the LLNL EGDL (Evaluated Gamma-Ray Data Library) data file

Description: Photon (Gamma-Ray) KERMA factors calculated from the LLNL EGDL (Evaluated Gamma-Ray Data Library) file are tabulated for the elements from Z=1 to Z=30 and for 15 composite materials. The KERMA factors are presented for 191 energy groups over the incident photon energy range from 100 eV to 100 MeV. 3 refs.
Date: October 10, 1986
Creator: Howerton, Robert J.
Item Type: Refine your search to only Report
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Complex defects in the oxidation of uranium

Description: We are reporting EPR results obtained with uranium powder samples fully oxidized in dry air, water vapor, and air/water vapor mixtures. The results reported previously are confirmed and additional paramagnetic centers, associated with chemisorbed species, have been identified. The temperature dependence of the g-value for these centers from room temperature to 10K is also reported.
Date: June 10, 1986
Creator: MacCrone, R. K.; Sankaran, S.; Shatynski, S. R. & Colmenares, C. A.
Item Type: Refine your search to only Article
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Cooling of Stored Beams

Description: Beam cooling methods developed for the accumulation of antiprotons are being employed to assist in the performance of experiments in Nuclear and Particle Physics with ion beams stored in storage rings. The physics of beam cooling, and the ranges of utility of stochastic and electron cooling are discussed in this paper.
Date: June 10, 1986
Creator: Mills, F.
Item Type: Refine your search to only Report
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Crystallographic Considerations of the Delta in Equilibrium. cap alpha. Displacive Transformation in Plutonium Alloys

Description: Determination of invariant-plane strain crystallographic solutions for martensitic transformation between the FCC delta and monoclinic ..cap alpha.. phases in plutonium alloys, using three possible lattice correspondences and 53 possible lattice-invariant shear systems, identifies the most probable delta-..cap alpha.. lattice correspondence. The operative lattice-invariant shear systems are predicted by comparison of both shape strain magnitudes and computed interfacial energies. For delta ..--… more
Date: June 10, 1986
Creator: Adler, P. H. & Olson, G. B.
Item Type: Refine your search to only Article
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Design considerations for a combined synchrotron-light source and heavy-ion storage ring Atomic Physics Facility

Description: An Atomic Physics Facility (APF) based on the combination of photons produced by a synchrotron light source with heavy ions in a storage ring will open the way to the study of ionic states of almost all elements. The design considerations for such a facility are discussed in terms of the use of synchrotron radiation for photoexcitation and ionization experiments. Design considerations for an APF are given in terms of the accelerator facilities presently available at BNL which include the Nation… more
Date: November 10, 1986
Creator: Jones, K. W.; Johnson, B. M.; Meron, M.; Lee, Y. Y.; Thieberger, P. & Thomlinson, W. C.
Item Type: Refine your search to only Article
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Final report on the use of the modular-logic-nomenclature approach for the N-reactor probabilistic risk assessment

Description: The N-Reactor probabilistic risk assessment adaption of the modular logic approach for fault tree modeling has led to the update of the master logic diagram (MLD) nomenclature to conform with a standard modular-logic-model-nomeclature format. This report describes the MLD nomenclature system and provides a listing of the updated MLD label codes, along with the original codes.
Date: June 10, 1986
Item Type: Refine your search to only Report
open access

Giant resonance phenomena in the electron impact ionization of heavy atoms and ions

Description: Heavy atoms and ions offer an interesting opportunity to study atomic physics in a region where the atomic structure is dominated by the interelectronic interactions. One illustration of this is the profound term dependence of atomic orbitals for certain configurations of heavy atoms and ions. The appearance of giant scattering resonances in the cross sections for ionization of heavy atoms by electron impact is a manifestation of resonance behavior. Such resonant structures arise from the doubl… more
Date: June 10, 1986
Creator: Younger, S.M.
Item Type: Refine your search to only Article
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Glass Making Technology for High-Level Nuclear Waste

Description: This paper addresses specific and unique chemical engineering aspects of the Defense Waste Processing Facility (DWPF) at the Savannah River Plant. This paper also addresses the glass melter and those processes that are directly coupled to it. A somewhat disproportionate emphasis is given to sludge pretreatment, for the sake of completeness in this session. We have attempted to focus on those features of the DWPF that may be of general interest or even useful to the practicing chemical engineer.
Date: July 10, 1986
Creator: Boersma, M. D. & Mahoney, J. L.
Item Type: Refine your search to only Article
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Impact of several reactor features on TF coil design for TPSS

Description: Limits of acceptable radiation levels relative to winding pack current densities in the toroidal field (TF) coils is given for relevant reactor designs. Force cooled conductors are stipulated in this study. The maximum field which can be supported while maintaining adequate stability and the ability to protect the coils in the event of a quench to end of the machine life is reported to be 6T. TF configuration, winding pack design, heat removal, stability, copper fraction and effect of damage, l… more
Date: January 10, 1986
Creator: Miller, J. R.
Item Type: Refine your search to only Report
open access

Infrared and Raman investigation of rare-earth phosphate glasses for potential use as radioactive waste forms

Description: This project was designed to investigate the properties of the rare-earth phosphate glasses CeO{sub 2}-P{sub 2}O{sub 5} and Pr{sub 2}O{sub 3}-P{sub 2}O{sub 5} for potential use as radioactive waste glasses. The research involved determination of the glass-forming region, loading capacity, and optimum processing parameters of the glasses. Structural studies of the unloaded host glasses and glasses loaded with simulated waste elements were to be done using Raman, infrared and infrared reflection … more
Date: November 10, 1986
Creator: Morgan, S.
Item Type: Refine your search to only Report
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Infrared and Raman investigation of rare-earth phosphate glasses for potential use as radioactive waste forms. Historically Black Colleges and Universities Radioactive Waste Management Research Program: Final technical report

Description: This project was designed to investigate the properties of the rare-earth phosphate glasses CeO{sub 2}-P{sub 2}O{sub 5} and Pr{sub 2}O{sub 3}-P{sub 2}O{sub 5} for potential use as radioactive waste glasses. The research involved determination of the glass-forming region, loading capacity, and optimum processing parameters of the glasses. Structural studies of the unloaded host glasses and glasses loaded with simulated waste elements were to be done using Raman, infrared and infrared reflection … more
Date: November 10, 1986
Creator: Morgan, S.
Item Type: Refine your search to only Report
open access

Investigation of MAGMA chambers in the Western Great Basin. Final report, 9 June 1982-31 October 1985

Description: This report summarizes efforts made by the Seismological Laboratory toward the detection and delineation of shallow crustal zones in the western Great Basin, and toward the development of methods to accomplish such detection. The work centers around the recently-active volcanic center near Long Valley, California. The work effort is broken down into three tasks: (1) network operations, (2) data analysis and interpretation, and (3) the study of shallow crustal amomalies (magma bodies). Section (… more
Date: February 10, 1986
Creator: Peppin, W.A.
Item Type: Refine your search to only Report
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Materials technology applied to nuclear accelerator targets

Description: The continuing requests for both shaped and flat, very low areal density metal foils have led to the development of metallurgical quality, high strength products. Intent of this paper is to show methods of forming structures on various substrates using periodic vapor interruptions, alternating anodes, and mechanical peening to alter otherwise unacceptable grain morphology which both lowers tensile strength and causes high stresses in thin films. The three technologies, physical vapor deposition… more
Date: November 10, 1986
Creator: Barthell, Barry L.
Item Type: Refine your search to only Article
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Neutron scattering on nuclei near A = 60 and A = 90

Description: Over a wide range of incident energies, the total cross section and angular distributions for elastic scattering of neutrons from nuclei in these mass regions are analyzed using the spherical-optical-statistical model. The effect of a real-surface-peaked potential, predicted by dispersion relations, is considered. It is found that when the data on a given nucleus between say, 4.5 and 10 MeV, are analyzed simultaneously one obtains a smooth energy variation of the optical model parameters. Moreo… more
Date: October 10, 1986
Creator: Lawson, R. D. & Smith, A. B.
Item Type: Refine your search to only Article
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Nomenclature of SLC Arc beamline components

Description: This note defines I and C formal names for beamline components in the Arc as specified in the TRANSPORT decks ARCN FINAL and ARCS FINAL of June 5, 1985. The formal name consists of three fields: the primary name, the zone and the unit number. The general principles and guidelines are explained in Reference 1. The rationale and the final resolutions of the naming conventions for the Arc are explained.
Date: April 10, 1986
Creator: Silva, J. & Weng, W. T.
Item Type: Refine your search to only Report
open access

OTA Senior Management Retreat, 1986

Description: Materials from an OTA Senior Management Retreat including memoranda, summaries, and discussion points for previous or upcoming studies and programs. The retreat was held from November 12-14, 1986.
Date: November 10, 1986
Creator: United States. Congress. Office of Technology Assessment.
Item Type: Refine your search to only Book
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Radiation in the SLC final focus alcoves from beam losses in collimators and dumps

Description: Radiation levels inside the final focus alcoves are calculated from the main dump, tune-up dumps, and adjustable collimators. Neutron calculations are done for giant resonance neutrons. Fluences of neutrons and photons in the alcoves are determined. It is concluded that, if the beam losses do indeed occur as believed, many of the electronic components in the alcoves will begin to fail after a very short running period. (LEW)
Date: September 10, 1986
Creator: Jenkins, T.M. & McCall, R.C.
Item Type: Refine your search to only Report
open access

The Savannah River Site and the Processing Facility Being Built to Prepare its Radioactive Waste for Permanent Disposal

Description: This presentation provides an appreciation for the tremendous chemical processing challenges met in the development of the Defense Waste Process Facility (DWPF) process. The DWPF is presently under construction and is due for completion in 1989. Before radioactive waste is introduced to the DWPF in late 1989, the remote operation of all equipment and all process steps must be demonstrated.
Date: July 10, 1986
Creator: Knight, J. R.
Item Type: Refine your search to only Article
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Scaling of current density, total current, emittance, and brightness for hydrogen negative ion sources

Description: The atomic and molecular processes that play a principal role in negative ion formation in a hydrogen negative ion discharge are discussed. The collisions of energetic electrons with gas molecules within the discharge lead to vibrationally excited molecules. Thermal electrons in turn attach to these excited molecules and generate negative ions via the dissociative attachment process. A system geometry chosen to optimize these collision processes is discussed that consists of a high-power discha… more
Date: July 10, 1986
Creator: Hiskes, J.R.
Item Type: Refine your search to only Article
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Trace Element Measurements Using White Synchrotron Radiation

Description: Synchrotron radiation, when used for x-ray fluorescence (XRF) has several advantages over conventional x-ray sources. Our group at Brookhaven National Laboratory is developing the equipment and expertise to make XRF measurements with synchrotron radiation. The apparatus is briefly described, along with the alignment techniques. Some minimum detectable limits for trace elements in thin biological standards measured with white light irradiations are presented.
Date: November 10, 1986
Creator: Hanson, A. L.; Jones, K. W.; Gordon, B. M.; Pounds, J. G.; Kwiatek, W. M.; Long, G. J. et al.
Item Type: Refine your search to only Article
open access

Use of single-cutter data in the analysis of PDC bit designs

Description: A method is developed for predicting cutter forces, temperatures, and wear on PDC bits as well as integrated bit performance parameters such as weight-on-bit (WOB), drilling torque, and bit imbalance. A computer code called PDCWEAR has been developed to make this method available as a tool for general bit design. The method uses single-cutter data to provide a measure of rock drillability and employs theoretical considerations to account for interaction among closely spaced cutters on the bit. … more
Date: October 10, 1986
Creator: Glowka, D.A.
Item Type: Refine your search to only Article
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