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Parametric study of the stability margins of cable-in-conduit superconductors: experiment

Description: In a previous experiment on the stability of cable-in-conduit superconductors, we sometimes observed multivalued stability margins, which we attributed to strong heating-induced transient flows. We proposed a schematic theory from which we derived a scaling relation for the limiting current below which the stability margin is always singlevalued. Measurements at different magnetic fields are used to test the scaling with critical temperature and resistivity. We also examine the scaling with hea… more
Date: January 1, 1980
Creator: Lue, J. W. & Miller, J. R.
Partner: UNT Libraries Government Documents Department
open access

Technology for large tandem mirror experiments

Description: Construction of a large tandem mirror (MFTF-B) will soon begin at Lawrence Livermore National Laboratory (LLNL). Designed to reach break-even plasma conditions, the facility will significantly advance the physics and technology of magnetic-mirror-based fusion reactors. This paper describes the objectives and the design of the facility.
Date: September 4, 1980
Creator: Thomassen, K.I.
Partner: UNT Libraries Government Documents Department
open access

An update on environmental, health and safety issues of interest to the photovoltaic industry

Description: There is growing interest in the environmental, health, and safety issues related to new photovoltaic technologies as they approach commercialization. Such issues include potential toxicity of II--VI compounds; the impacts of new environmental regulations on module manufacturers; and, the need for recycling of spent modules and manufacturing wastes. This paper will review these topics. 20 refs.
Date: January 1, 1992
Creator: Moskowitz, P. D.; Viren, J. & Fthenakis, V. M.
Partner: UNT Libraries Government Documents Department
open access

Environmental recordkeeping: The administrative record

Description: This document provides information on an environmental records management system. It includes information on environmental recordkeeping; environmental regulations with emphasis on the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA); and the administrative record including a case study of the Hanford Site's administrative record system. This paper will focus on the following objectives: (1) Identify resources that can be used as reference tools; (2) unders… more
Date: August 1, 1991
Creator: Sprouse, B.S.
Partner: UNT Libraries Government Documents Department
open access

Recent results on the FRC transport

Description: Some recent transport studies of field-reversed configurations (FRC) during their equilibrium phase are presented. The FRC confinement times of interest tau/sub N/, tau/sub E/, and tau/ sub phi/ are for particles, energy, and trapped-flux, respectively. An analytical expression for tau/sub N/ based on Lower-Hybrid-Drift (LHD) resistivity is presented. Some progress in assessing the respective contributions of radiation and thermal conduction to tau/sub E/ is given. Finally, the relation tau/sub… more
Date: January 1, 1984
Creator: Tuszewski, M.
Partner: UNT Libraries Government Documents Department
open access

Charge exchange processes involving iron ions

Description: A review and evaluation is given of the experimental data which are available for charge exchange processes involving iron ions and neutral H, H/sub 2/ and He. Appropriate scaling laws are presented, and their accuracy estimated for these systems. A bibliography is given of available data sources, as well as of useful data compilations and review articles. A procedure is recommended for providing single approximate formulae to the fusion community to describe total cross sections for electron c… more
Date: January 1, 1985
Creator: Phaneuf, R.A.
Partner: UNT Libraries Government Documents Department
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Study of quark fragmentation in e/sup +/e/sup -/ annihilation at 29 GeV: charged particle multiplicity distributions

Description: This paper presents the charged particle multiplicity distributions for e/sup +/e/sup -/ annihilation at ..sqrt..s = 29 GeV measured in the High Resolution Spectrometer. The data, which correspond to an integrated luminosity of 185 pb/sup -1/, were obtained at the e/sup +/e/sup -/ storage ring PEP. The techniques used to obtain the original distributions from the observed prong numbers are discussed. The multiplicity distribution of the charged particles with a two jet selection has a mean valu… more
Date: January 1, 1985
Creator: Derrick, M.; Kooijman, P.; Loos, J.S.; Musgrave, B.; Price, L.E.; Schlereth, J. et al.
Partner: UNT Libraries Government Documents Department
open access

The potential of passive-remote Fourier transform infrared (FTIR) spectroscopy to detect organic emissions under the Clean Air Act

Description: The Clean Air Act of 1990 regulates the emission of 198 air toxics. Currently, there is no existing technology by which a regulatory agency can independently determine if a facility is in compliance. We have successfully tested the ability of passive-remote Fourier transform infrared (FTIR) spectroscopy to detect chemical plumes released in the field. Additional laboratory releases demonstrated that FTIR spectroscopy can detect target analytes in mixtures containing components which have overla… more
Date: January 1, 1992
Creator: Demirgian, J.C.; Hammer, C.L. (Argonne National Lab., IL (United States)) & Kroutil, R.T. (Chemical Research, Development and Engineering Center, Aberdeen Proving Ground, MD (United States))
Partner: UNT Libraries Government Documents Department
open access

Nuclear facility licensing, documentaion, and reviews, and the SP-100 test site experience

Description: The required approvals and permits to test a nuclear facility are extensive. Numerous regulatory requirements result in the preparation of documentation to support the approval process. The principal regulations for the SP-100 Ground Engineering System (GES) include the National Environmental Policy Act, Clean Air Act, and Atomic Energy Act. The documentation prepared for the SP-100 Nuclear Assembly Test (NAT) included an Environmental Assessment, state permit applications, and Safety Analysis … more
Date: June 1, 1991
Creator: Cornwell, B. C.; Deobald, T. L. & Bitten, E. J.
Partner: UNT Libraries Government Documents Department
open access

Experimental studies of field-reversed-configuration (FRC) confinement in FRX-C

Description: A primary purpose of the large bore (0.5 m dia.) FRX-C field-reversed theta pinch experiment is to study the scaling of plasma particle containment time, tau/sub N/, with major radius, R, of the field-reversed configuration (FRC). At 20 mtorr fill pressure the FRX-C plasma parameters, anti n approx. 4 x 10/sup 15/ c/sup -3/, T/sub e/ approx. 100 eV, T/sub i/ approx. 150 eV, are comparable to those obtained in the smaller bore (0.25 m dia.) FRX-B device. Under these conditions, the present measu… more
Date: January 1, 1982
Creator: Siemon, R. E.; Armstrong, W. T. & Bartsch, R. R.
Partner: UNT Libraries Government Documents Department
open access

The 1990 Clean Air Act Amendments and the Great Lakes Economy: Challenges and Opportunities

Description: This paper deals with the market for SO{sub 2} emission allowances over time and electric utility compliance choices. For currently high emitting plants ( > 2.5 lb SO{sub 2}/MMBtu), the 1990 Clean Air Act Amendments (CAAA) provide for about twice as many SO{sub 2} allowances to be issued per year in Phase 1 (1995--1999) than in Phase 2. Also, considering the scrubber incentives in Phase 1, there is likely to be substantial emission banking for use in Phase 2. Allowance prices are expected to in… more
Date: January 1, 1991
Creator: Hanson, D.; Molburg, J.; Pandola, G.; Taxon, T.; Lurie, G.; Fisher, R. et al.
Partner: UNT Libraries Government Documents Department
open access

The renormalization group and lattice QCD

Description: This report discusses the following topics: scaling of thermodynamic quantities and critical exponents; scaling relations; block spin idea of Kadanoff; exact RG solution of the 1-d Ising model; Wilson's formulation of the renormalization group; linearized transformation matrix and classification of exponents; derivation of exponents from the eigenvalues of {Tau}{sub {alpha}{beta}}; simple field theory: the gaussian model; linear renormalization group transformations; numerical methods: MCRG; bl… more
Date: January 1, 1989
Creator: Gupta, R.
Partner: UNT Libraries Government Documents Department
open access

Freely expanding detonation products: Scaling of rate processes

Description: Using the Los Alamos reactive hydrodynamics code KIVA, calculations have been made to simulate the free expansion of cylinders of detonation products into a high vacuum. The emphasis of this paper is on the scaling of rate processes with cylinder size and initial conditions as a function of position in the expanding mass. The processes considered include diffusion, unimolecular decomposition, biomolecular radical reactions, and vibrational relaxation. The calculations also give time-dependent v… more
Date: January 1, 1988
Creator: Greiner, N. R.
Partner: UNT Libraries Government Documents Department
open access

Baeklund transformations, conservation laws and linearization of the self-dual Yang-Mills and chiral fields

Description: Baecklund Transformations (BT) and the derivation of local conservation laws are first reviewed in the classic case of the Sine-Gordon equation. The BT, conservation laws (local and nonlocal), and the inverse-scattering formulation are discussed for the chiral and the self-dual Yang-Mills fields. Their possible applications to the loop formulation for the Yang-Mills fields are mentioned. 55 references, 1 figure.
Date: January 1, 1980
Creator: Wang, L. C.
Partner: UNT Libraries Government Documents Department
open access

Economics of tokamak power systems

Description: The impact of plasma operating characteristics, engineering options, and technology on the capital-cost trends of Tokamak power plants is determined. Tokamak power systems are compared to other advanced energy systems and found to be economically competitive. A three-phase strategy for demonstrating commercial feasibility of fusion power, based on a common-site multiple-unit concept, is presented.
Date: January 1, 1977
Creator: Reid, R.L. & Steiner, D.
Partner: UNT Libraries Government Documents Department
open access

Nature and effects of ion-cyclotron fluctuations in TMX

Description: In the tandem mirror experiment (TMX), coherent oscillations have been identified as resulting from the Alfven ion-cyclotron instability. Although the drive for this instability is localized in the end cell, the waves generated propagate out of the unstable region and interact with the central-cell ions. This interaction leads to an experimentally observed scaling of the stored end-cell energy with axial ion end-loss current.
Date: February 19, 1982
Creator: Casper, T. A.; Poulsen, P. & Smith, G. R.
Partner: UNT Libraries Government Documents Department
open access

Molecular dynamics simulations

Description: The molecular dynamics computer simulation discovery of the slow decay of the velocity autocorrelation function in fluids is briefly reviewed in order to contrast that long time tail with those observed for the stress autocorrelation function in fluids and the velocity autocorrelation function in the Lorentz gas. For a non-localized particle in the Lorentz gas it is made plausible that even if it behaved quantum mechanically its long time tail would be the same as the classical one. The general… more
Date: July 1, 1985
Creator: Alder, B. J.
Partner: UNT Libraries Government Documents Department
open access

Scaling of exploding pusher targets

Description: A theory of exploding pusher laser pusher targets is compared to results of LASNEX calculations and to Livermore experiments. A scaling relationship is described which predicts the optimum target/pulse combinations as a function of the laser power.
Date: August 22, 1977
Creator: Nuckolls, J.H.
Partner: UNT Libraries Government Documents Department
open access

Comments on regulatory reform

Description: Nuclear regulatory reform is divided into two parts. The first part contains all those matters for which new legislation is required. The second part concerns all those matters that are within the power of the Commission under existing statutes. Recommendations are presented.
Date: January 1, 1982
Creator: Hendrie, J. M.
Partner: UNT Libraries Government Documents Department
open access

Low Energy Ring issues

Description: The Low Energy Ring (LER) in an Asymmetric B Factory is always too large in circumference. The requirements for the LER in a B Factory are developed, including, damping, emittance and power density, and some examples of technical solutions are given. The main emphasis is on ensuring flexibility of operation.
Date: April 1, 1992
Creator: Hutton, A.
Partner: UNT Libraries Government Documents Department
open access

Minorities and air quality non-attainment areas: A preliminary geo-demographic analysis

Description: A major section of the Clean Air Act Amendments (CAAA) focuses on reducing air pollution through extending and modifying the provisions for states and localities with US Environmental Protection Agency (EPA)-designated non-attainment areas. Specifically, Title 1 of the CAAA is concerned with non-attainment areas, as defined relative to the National Ambient Air Quality Standards for atmospheric ozone, carbon monoxide, and particulate matter; Title 2 is concerned with mobile sources or air pollut… more
Date: June 1, 1991
Creator: Wernette, D. & Nieves, L.
Partner: UNT Libraries Government Documents Department
open access

Observation of KNO scaling in the neutral energy spectra from. cap alpha cap alpha. and pp collisions at ISR energies

Description: Neutral transverse energy spectra in pp and ..cap alpha cap alpha.. interactions are analyzed in terms of the Wounded Nucleon Model. Analysis of the ..cap alpha cap alpha.. spectrum by application of a multiple nucleon-nucleon collision mechanism is conveniently performed when a Gamma Distribution is used to represent the pp spectral shape. The Wounded Nucleon Model provides a reasonable description of the ..cap alpha cap alpha.. spectrum for the first 3 orders of magnitude, but completely fail… more
Date: January 1, 1986
Creator: Tannenbaum, Michael J.
Partner: UNT Libraries Government Documents Department
open access

Startup of reversed-field mirror reactors using coaxial plasma guns

Description: Preliminary calculations are given that indicate that a coaxial plasma gun might scale reasonably to reactor-grade operating conditions. Ongoing experiments and numerical simulations should shed some light on the validity of the described scaling laws.
Date: November 9, 1979
Creator: Smith, A. C., Jr.; Hartman, C. W.; Carlson, G. A.; Neef, W. S., Jr. & Eddleman, J. L.
Partner: UNT Libraries Government Documents Department
open access

Control of beam dynamics in high energy induction linacs

Description: The Advent of laser-ion-guiding in the Advanced test Accelerator along with the development of accelerator cavities optimized with respect to beam breakup coupling impedence now make it possible to consider a new class of high current, high emergy linear induction accelerators. The control of the beam breakup and other instabilities by laser guiding and by various magnetic focusing schemes will be discussed along with the scaling laws for the design of such machines to minimize the growth of th… more
Date: July 29, 1986
Creator: Caporaso, G.J.
Partner: UNT Libraries Government Documents Department
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