Computation of self-consistent 2-D MHD with neutral-beam and bootstrap currents in elongated plasmas (open access)

Computation of self-consistent 2-D MHD with neutral-beam and bootstrap currents in elongated plasmas

The observation of substantial current drive from neutral beam injection (NBI) in TFTR, JET and DIII-D has led to renewed interest in a steady state, non-inductively driven tokamak. The discovery of apparently considerable neoclassical (bootstrap) current in TFTR, makes a steady state device even more attractive since the bootstrap portion of the current could be obtained without additional power input. Motivated by these results, we have developed a code, ACCOME, which self-consistently computes the 2-D MHD equilibrium with the current driven by neutral beams, bootstrap and the electric field. In this paper we first describe some details of the code in the next section and in the subsequent section show some applications to DIII-D and to a possible ITER design.
Date: April 5, 1983
Creator: Devoto, R. S.; Tani, K. & Azumi, M.
Object Type: Article
System: The UNT Digital Library
Advanced development of a pressurized ash agglomerating fluidized-bed coal gasification system. Quarterly progress report, October 1-December 31, 1982 (open access)

Advanced development of a pressurized ash agglomerating fluidized-bed coal gasification system. Quarterly progress report, October 1-December 31, 1982

The overall objective of the Westinghouse coal gasification program is to demonstrate the viability of the Westinghouse pressurized, fluidized bed, gasification system for the production of medium-Btu fuel gas for syngas, electrical power generation, chemical feedstocks, or industrial fuels and to obtain performance and scaleup data for the process and hardware. Progress reports are presented for the following tasks: (1) operation and maintenance of the process development unit (PDU); (2) process analysis; (3) cold flow scaleup facility; (4) process component engineering and design; and (5) laboratory support studies involving gas solids flow modeling and coal/ash behavior. 9 figures, 19 tables.
Date: April 21, 1983
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Development of BEACON technology. Quarterly report, October-December 1982 (open access)

Development of BEACON technology. Quarterly report, October-December 1982

The BEACON process involves the catalytic deposition of a highly reactive form of carbon from a gas stream which contains carbon monoxide. The carbon-depleted gas is combusted with air to produce power, and the carbon is reacted with steam to produce methane or hydrogen. During the quarter both SOHIO and TRW worked on catalysts which would suppress methane formation during steaming thus increasing the amount of hydrogen formed. At SOHIO a C77-K2 catalyst promoted with a Class II compound showed promise in laboratory tests for suppressing methane. At TRW a K-1 unsupported catalyst promoted with 10% of Additive F maintained methane suppression over 30 cycles in laboratory scale tests. Shakedown of the Tandem Reactor Apparatus was completed and testing was initiated under quasi-continuous transfer of solids between reactors. Nine short term tests were performed with K-1 based BEACON solids. The data from these tests indicate that the Tandem Reactor concept is valid and BEACON solids can be transferred efficiently in the fluidized state between the deposition and gasification reactors. A preliminary analysis of the potential of a BEACON combined cycle/hydrogen system with a hydrogen fuel cell has been performed. The BEACON process can be used to coproduce hydrogen and electric …
Date: April 1, 1983
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Seismic design technology for breeder reactor structures. Volume 1. Special topics in earthquake ground motion (open access)

Seismic design technology for breeder reactor structures. Volume 1. Special topics in earthquake ground motion

This report is divided into twelve chapters: seismic hazard analysis procedures, statistical and probabilistic considerations, vertical ground motion characteristics, vertical ground response spectrum shapes, effects of inclined rock strata on site response, correlation of ground response spectra with intensity, intensity attenuation relationships, peak ground acceleration in the very mean field, statistical analysis of response spectral amplitudes, contributions of body and surface waves, evaluation of ground motion characteristics, and design earthquake motions. (DLC)
Date: April 1, 1983
Creator: Reddy, D.P.
Object Type: Report
System: The UNT Digital Library
Zero-field. mu. SR and low-temperature. mu. /sup +/ diffusivity in copper (open access)

Zero-field. mu. SR and low-temperature. mu. /sup +/ diffusivity in copper

In this paper the history of ..mu../sup +/ diffusion studies in copper, with particular emphasis on the increased low-temperature diffusivity which has been known for several years now, is reviewed. The theory and practice of the zero-field ..mu..SR method, which has come into increasing favor in the study of muon diffusion and trapping in metals, is surveyed, and its application to the low-temperature copper problem is discussed. 26 references.
Date: April 1, 1983
Creator: Clawson, C.W.
Object Type: Article
System: The UNT Digital Library
Seismic design technology for breeder reactor structures. Volume 4. Special topics in piping and equipment (open access)

Seismic design technology for breeder reactor structures. Volume 4. Special topics in piping and equipment

This volume is divided into five chapters: experimental verification of piping systems, analytical verification of piping restraint systems, seismic analysis techniques for piping systems with multisupport input, development of floor spectra from input response spectra, and seismic analysis procedures for in-core components. (DLC)
Date: April 1, 1983
Creator: Reddy, D.P.
Object Type: Report
System: The UNT Digital Library
Uptake by plants of radionuclides from FUSRAP waste materials (open access)

Uptake by plants of radionuclides from FUSRAP waste materials

Radionuclides from FUSRAP wastes potentially may be taken up by plants during remedial action activities and permanent near-surface burial of contaminated materials. In order to better understand the propensity of radionuclides to accumulate in plant tissue, soil and plant factors influencing the uptake and accumulation of radionuclides by plants are reviewed. In addition, data describing the uptake of the principal radionuclides present in FUSRAP wastes (uranium-238, thorium-230, radium-226, lead-210, and polonium-210) are summarized. All five radionuclides can accumulate in plant root tissue to some extent, and there is potential for the translocation and accumulation of these radionuclides in plant shoot tissue. Of these five radionuclides, radium-226 appears to have the greatest potential for translocation and accumulation in plant shoot tissue. 28 references, 1 figure, 3 tables.
Date: April 1, 1983
Creator: Knight, M.J.
Object Type: Report
System: The UNT Digital Library
1982 environmental monitoring report (open access)

1982 environmental monitoring report

The environmental levels of radioactivity and other pollutants found in the vicinity of BNL during 1982 are summarized in this report. As an aid in the interpretation of the data, the amounts of radioactivity and other pollutants released in airborne and liquid effluents from Laboratory facilities to the environment are also indicated. The environmental data include external radiation levels; radioactive air particulates; tritium concentrations; the amounts and concentrations of radioactivity in and the water quality of the stream into which liquid effluents are released; the concentrations of radioactivity in biota from the stream; the concentrations of radioactivity in and the water quality of ground waters underlying the Laboratory; and concentrations of radioactivity in milk samples obtained in the vicinity of the Laboratory. 30 references, 9 figures, 18 tables.
Date: April 1, 1983
Creator: Day, L.E. & Naidu, J.R. (eds.)
Object Type: Report
System: The UNT Digital Library
Effects of electronically neutral impurities on muonium in germanium (open access)

Effects of electronically neutral impurities on muonium in germanium

Low-temperature measurements of muonium parameters in various germanium crystals have been performed. We have measured crystals with different levels of neutral impurities, with and without dislocations, and with different annealing histories. The most striking result is the apparent trapping of Mu by silicon impurities in germanium.
Date: April 1, 1983
Creator: Clawson, C.W.; Crowe, K.M.; Haller, E.E.; Rosenblum, S.S. & Brewer, J.H.
Object Type: Article
System: The UNT Digital Library
Seismic design technology for breeder reactor structures. Volume 2. Special topics in soil/structure interaction analyses (open access)

Seismic design technology for breeder reactor structures. Volume 2. Special topics in soil/structure interaction analyses

This volume is divided into six chapters: definition of seismic input ground motion, review of state-of-the-art procedures, analysis guidelines, rock/structure interaction analysis example, comparison of two- and three-dimensional analyses, and comparison of analyses using FLUSH and TRI/SAC Codes. (DLC)
Date: April 1, 1983
Creator: Reddy, D.P.
Object Type: Report
System: The UNT Digital Library
Basalt Waste Isolation Project. Drilling and testing quarterly report, January 1, 1983-March 31, 1983 (open access)

Basalt Waste Isolation Project. Drilling and testing quarterly report, January 1, 1983-March 31, 1983

This document is a summary of dilling and testing results during the first calendar quarter (January through March 1983). The principal work during this period included the drilling and/or testing of boreholes RRL-2, RRL-6, RRL-14, DC-4/DC-5, DC-16A, DC-16B, and the McGee Well. Specific highlights of this work are summarized.
Date: April 1, 1983
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Report to the Legislature on the California Energy Commission's Geothermal Development Grant Program for Local Governments (open access)

Report to the Legislature on the California Energy Commission's Geothermal Development Grant Program for Local Governments

This report documents the California Energy Commission's administration of its Geothermal Development Grant Program for Local Governments. The Energy Commission established this program as a result of the passage of Assembly Bill 1905 (Bosco) in 1980. This legislation established the mechanism to distribute the state's share of revenues received from the leasing of federal mineral reserves for geothermal development. The federal government deposits these revenues in the Geothermal Resources Development Account (GRDA) created by AB 1905. The state allocates funds from the GRDA to the California Parklands and Renewable Resources Investment Fund, the counties of origin where the federal leases are located, and the Energy Commission. The legislation further directs the Energy Commission to disburse its share as grants to local governments to assist with the planning and development of geothermal resources. Activities which are eligible for funding under the Energy Commission's grant program include resource development projects, planning and feasibility studies, and activities to mitigate the impacts of existing geothermal development.
Date: April 1, 1983
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Evaporation of mesons from quark-gluon plasma by fission of chromoelectric flux tubes (open access)

Evaporation of mesons from quark-gluon plasma by fission of chromoelectric flux tubes

The chromoelectric flux tube model is used to obtain a dynamical description of the evaporation of mesons from a quark-gluon plasma. The radiation pressure is computed to assess whether this process is an important mode for the disassembly of a compressed plasma. A new result for the creation rate of q anti q pairs in a constant color field is employed.
Date: April 1, 1983
Creator: Glendenning, N.K.; Banerjee, B. & Matsui, T.
Object Type: Article
System: The UNT Digital Library
Accident at Three Mile Island and its aftermath (open access)

Accident at Three Mile Island and its aftermath

Viewgraphs are presented that describe the Three Mile Island-2 reactor; the severe accident in the reactor; activity levels following the accident; and estimated costs associated with the accident.
Date: April 18, 1983
Creator: Malinauskas, A.P.
Object Type: Report
System: The UNT Digital Library
Assessment of cold-climate environmental research priorities. Appendixes A, B (open access)

Assessment of cold-climate environmental research priorities. Appendixes A, B

These appendices present research plans in the areas of air pollution, water contamination/consumption, habitat modification and waste management that are relevant to the EPA's cold regions program. (ACR)
Date: April 1, 1983
Creator: States, J. B.
Object Type: Report
System: The UNT Digital Library
Heavy ion fusion half-year report, October 1, 1982-March 31, 1983 (open access)

Heavy ion fusion half-year report, October 1, 1982-March 31, 1983

Separate abstracts were prepared for each of the 4 included papers. (MOW)
Date: April 1, 1983
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Statistical calculation of complete events in medium-energy nuclear collisions (open access)

Statistical calculation of complete events in medium-energy nuclear collisions

This lecture presents the essential tools for formulating a statistical model for the nuclear disassembly process. We consider the quick disassembly (explosion) of a hot nuclear system, a so-called source, into multifragment final states, which compete according to their statistical weight. First some useful notation is introduced. The expressions for exclusive and inclusive distributions are given and the factorization of an exclusive distribution into inclusive ones is carried out. In turn, the grand canonical approximation for one-fragment inclusive distributions is introduced. Finally, it is outlined how to generate a statistical sample of complete final states. On this basis, a model for statistical simulation of complete events in medium-energy nuclear collisions has been developed.
Date: April 1, 1983
Creator: Randrup, J.
Object Type: Article
System: The UNT Digital Library
Seismic design technology for Breeder Reactor structures. Volume 3: special topics in reactor structures (open access)

Seismic design technology for Breeder Reactor structures. Volume 3: special topics in reactor structures

This volume is divided into six chapters: analysis techniques, equivalent damping values, probabilistic design factors, design verifications, equivalent response cycles for fatigue analysis, and seismic isolation. (JDB)
Date: April 1, 1983
Creator: Reddy, D.P. (ed)
Object Type: Report
System: The UNT Digital Library
Laser Accelerators (open access)

Laser Accelerators

Laser accelerators may be conveniently characterized, by their mode of operation, into media, far-field, and near-field accelerators. The first category--media accelerators--include the Inverse Cherenkov Effect Accelerator, the Plasma Focus Accelerator, and the Beat Wave Accelerator (BWA). The second category--far-field accelerators--include the Two-Wave Device and the Inverse Free Electron Accelerator (IFEL). The third category--near-field accelerators--includes conventional linacs scaled to small dimensions, dielectric sheets, small holes in dielectric cylinders, and gratings. Attention is devoted to an example from each category: namely (1) the BWA, (2) the IFEL, and (3) the linac scaled to small dimensions (about 30 GHz) and powered by a free electron laser (FEL). Finally, special attention is given to grating accelerators.
Date: April 1, 1983
Creator: Sessler, Andrew M.
Object Type: Article
System: The UNT Digital Library
US/FRG umbrella agreement for cooperation in GCR development. Fuel, fission products, and graphite subprogram. Quarterly status report, January 1, 1983-March 31, 1983 (open access)

US/FRG umbrella agreement for cooperation in GCR development. Fuel, fission products, and graphite subprogram. Quarterly status report, January 1, 1983-March 31, 1983

This report describes the status of the cooperative work being performed in the Fuel, Fission Product, and Graphite Subprogram under the HTR-Implementing Agreement of the United States/Federal Republic of Germany Umbrella Agreement for Cooperation in GCR Development. The status is described relative to the commitments in the Subprogram Plan for Fuel, Fission Products, and Graphite, Revision 5, April 1982, and Revision 6, February 1983. The work described was performed during the period January 1 through March 31, 1983 in the HTGR Base Technology Program at Oak Ridge National Laboratory, the HTGR Fuel and Plant Technology Programs at GA Technologies Inc. (GA), and the Project HTR-Brennstoffkreislauf of the Entwicklungsgemeinschaft HTR at KFA Juelich, HRB Mannheim, INTERATOM Bensberg, HOBEG Hanau, and SIGRI Meitingen.
Date: April 1, 1983
Creator: Turner, R. F.
Object Type: Report
System: The UNT Digital Library
Effect of total pressure on graphite oxidation. [HTGR] (open access)

Effect of total pressure on graphite oxidation. [HTGR]

Graphite corrosion in the high-temperature gas-cooled reactor (HTGR) is calculated using two key assumptions: (1) the kinetic, catalysis, and transport characteristics of graphite determined by bench-scale tests apply to large components at reactor conditions and (2) the effects of high pressure and turbulent flow are predictable. To better understand the differences between laboratory tests and reactor conditions, a high-pressure test loop (HPTL) has been constructed and used to perform tests at reactor temperature, pressure, and flow conditions. The HPTL is intended to determine the functional dependence of oxidation rate and characteristics on total pressure and gas velocity and to compare the oxidation results with calculations using models and codes developed for the reactor.
Date: April 1, 1983
Creator: Burnette, R. D. & Hoot, C. G.
Object Type: Article
System: The UNT Digital Library
Aquifer restoration at in-situ leach uranium mines: evidence for natural restoration processes (open access)

Aquifer restoration at in-situ leach uranium mines: evidence for natural restoration processes

Pacific Northwest Laboratory conducted experiments with aquifer sediments and leaching solution (lixiviant) from an in-situ leach uranium mine. The data from these laboratory experiments and information on the normal distribution of elements associated with roll-front uranium deposits provide evidence that natural processes can enhance restoration of aquifers affected by leach mining. Our experiments show that the concentration of uranium (U) in solution can decrease at least an order of magnitude (from 50 to less than 5 ppM U) due to reactions between the lixiviant and sediment, and that a uranium solid, possibly amorphous uranium dioxide, (UO/sub 2/), can limit the concentration of uranium in a solution in contact with reduced sediment. The concentrations of As, Se, and Mo in an oxidizing lixiviant should also decrease as a result of redox and precipitation reactions between the solution and sediment. The lixiviant concentrations of major anions (chloride and sulfate) other than carbonate were not affected by short-term (less than one week) contact with the aquifer sediments. This is also true of the total dissolved solids level of the solution. Consequently, we recommend that these solution parameters be used as indicators of an excursion of leaching solution from the leach field. Our experiments …
Date: April 1, 1983
Creator: Deutsch, W. J.; Serne, R. J.; Bell, N. E. & Martin, W. J.
Object Type: Report
System: The UNT Digital Library
Change in dispersion function from field-gradient errors (open access)

Change in dispersion function from field-gradient errors

We consider changes in the momentum dispersion function induced by field gradient errors of quadrupole magnets located around a ring.
Date: April 25, 1983
Creator: Ohnuma, S. & Takayama, K.
Object Type: Report
System: The UNT Digital Library
Analysis of forward and near-forward elastic-scattering amplitudes for pp and anti pp collisions (open access)

Analysis of forward and near-forward elastic-scattering amplitudes for pp and anti pp collisions

We will present the results of two recently published (1983) papers by M.M. Block and R.N. Cahn, which analyze for anti pp and pp elastic scattering the rho values (ratios of the real to the imaginary parts of the forward nuclear scattering amplitudes), the total (hadronic) cross sections sigma, and the b values, the nuclear slope parameters. The predictions of the analyses, from ..sqrt.. s bar > 5 GeV, is compared with the recently measured values of sigma and b at the SPS Collider. The analysis has also been redone to include new ISR data available from R211 at ..sqrt.. s bar = 62.5 GeV, in order to estimate odderon contributions, i.e., contributions from odd amplitudes with unconventional (non-Reggeon) energy dependence. Limits of approx. 1% are placed on these amplitudes. Our analysis has been extrapolated up to 100 TeV, to give sigma, rho and b predictions for cosmic ray and future collider energies.
Date: April 1, 1983
Creator: Block, M.B. & Cahn, R.N.
Object Type: Article
System: The UNT Digital Library