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1/N

Description: There exist families of field theories with symmetry group SO(N) (or SU(N)) that become simpler as N becomes larger. More precisely, the solutions to these theories possess an expansion in powers of 1/N. This expansion is the subject of these lectures. The 1/N expansion can be used to analyze model field theories. The 1/N expansion is developed for phi/sup 4/ theory and applied to two two-dimensional models with similar combinatoric structures, the Gross-Neveu model and the CP/sup N-1/ model. T… more
Date: March 1, 1980
Creator: Coleman, S.
Item Type: Refine your search to only Report
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4. pi. physics. [/sup 40/Ar + KCl, 0. 4 to 1. 8 GeV/A]

Description: Exclusive ..pi../sup -/ and charged-particle production in collisions of /sup 40/Ar on KCl are studied at incident energies from 0.4 to 1.8 GeV/A. The correlation between the ..pi../sup -/ and the total charged particle multiplicity confines the reaction along a narrow ridge with no exotic islands of pion production. For high multiplicities the system reaches the total disintegration of target and projectile into singly charged fragments and pions. Every 200 MeV/A datum was taken with a central… more
Date: March 1, 1980
Creator: Sandoval, A.
Item Type: Refine your search to only Article
open access

1978 bibliography of atomic and molecular processes. [Bibliography]

Description: This annotated bibliography lists 2557 works on atomic and molecular processes reported in publications dated 1978. Sources include scientific journals, conference proceedings, and books. Each entry is designated by one or more of the 114 categories of atomic and molecular processes used by the Controlled Fusion Atomic Data Center to classify data. Also indicated is whether the work was experimental or theoretical, what energy range was covered, what reactants were investigated, and the country… more
Date: March 1, 1980
Item Type: Refine your search to only Report
open access

Accelerated commercialization program for materials and components. Solar sheet glass: an example of materials commercialization

Description: The SERI Accelerated Commercialization Program for Materials and Components is designed to serve as a catalyst in promoting technological change through the introduction of new materials into solar technologies. This report focuses on technological diffusion of advances in materials technology from the developer to the manufacturers of solar equipment. It provides an overview and understanding of the problems encountered in the private sector in trying to advance technological change and discus… more
Date: March 1, 1980
Creator: Livingston, R. & Butler, B.
Item Type: Refine your search to only Report
open access

Accelerator Technology Program. Progress report, January-June 1980

Description: The activities of Los Alamos Scientific Laboratory's (LASL) Accelerator Technology (AT) Division during the first six months of calendar 1980 are discussed. This report is organized around major projects of the Division, reflecting a wide variety of applications and sponsors. The first section summarizes progress on the Proton Storage Ring to be located between LAMPF and the LASL Pulsed Neutron Research facility, followed by a section on the gyrocon, a new type of high-power, high-efficiency ra… more
Date: March 1, 1980
Creator: Knapp, E.A. & Jameson, R.A. (Comps.)
Item Type: Refine your search to only Report
open access

ACCEPT: a three-dimensional finite element program for large deformation elastic-plastic-creep analysis of pressurized tubes

Description: ACCEPT is a three-dimensional finite element computer program for analysis of large-deformation elastic-plastic-creep response of Zircaloy tubes subjected to temperature, surface pressures, and axial force. A twenty-mode, tri-quadratic, isoparametric element is used along with a Zircaloy materials model. A linear time-incremental procedure with residual force correction is used to solve for the time-dependent response. The program features an algorithm which automatically chooses the time step … more
Date: March 1980
Creator: Hutula, D.N. & Wiancko, B. E.
Item Type: Refine your search to only Report
open access

Accurate Computer Simulation of a Drift Chamber

Description: A general purpose program for drift chamber studies is described. First the capacitance matrix is calculated using a Green's function technique. The matrix is used in a linear-least-squares fit to choose optimal operating voltages. Next the electric field is computed, and given knowledge of gas parameters and magnetic field environment, a family of electron trajectories is determined. These are finally used to make drift distance vs time curves which may be used directly by a track reconstructi… more
Date: March 25, 1980
Creator: Killian, T J
Item Type: Refine your search to only Article
open access

Accurate Numerical Solutions for Elastic-Plastic Models

Description: The accuracy of two integration algorithms is studied for the common engineering condition of a von Mises, isotropic hardening model under plane stress. Errors in stress predictions for given total strain increments are expressed with contour plots of two parameters: an angle in the pi plane and the difference between the exact and computed yield-surface radii.
Date: March 1980
Creator: Schreyer, H. L.; Kulak, R. F. & Kramer, J. M.
Item Type: Refine your search to only Report
open access

Acoustic emission signature analysis. Technical progress report No. 2, 1 March 1979-29 February 1980

Description: Acoustic emission in plate glass and steel has been studied as a function of angle. The low frequency AE in glass (< 1 MHz) was studied in detail, and contributions from P, S and Rayleigh waves identified. These results are isotropic, as expected theoretically. Limited high frequency (5-20 MHz) results have been obtained in glass. This is the first time, that AE energy has been measured above 3 MHz. The measurement of AE on transgranular crack growth in steel during fatigue crack growth was acc… more
Date: March 1, 1980
Creator: Buck, O. & Pardee, W.J.
Item Type: Refine your search to only Report
open access

Actinide partitioning-transmutation program final report. VI. Short-term risk analysis of reprocessing, refabrication, and transportation: summary

Description: A Partitioning-Transmutation (PT) fuel cycle is being compared to a Reference cycle employing conventional fuel-material recovery methods. The PT cycle uses enhanced recovery methods so that most of the long-lived actinides are recycled to nuclear power plants and transmuted thereby reducing the waste toxicity. This report compares the two fuel cycles on the basis of the short-term radiological and nonradiological risks. The accidental radiological risk to the public is analyzed by estimating t… more
Date: March 1, 1980
Creator: Fullwood, R. & Jackson, R.
Item Type: Refine your search to only Report
open access

Adaptive control for energy conservation

Description: The objective of this project is to investigate the use of adaptive control concepts in buildings with solar-assisted heating, ventilating, and air-conditioning (HVAC) systems to maintain occupant comfort conditions while minimizing auxiliary energy use. Accomplishing this objective requires an energy management system capable of making sound tradeoffs. Optimal control theory is used along with a system identification technique to provide an adaptable stratgy. The resulting overall approach is … more
Date: March 1, 1980
Creator: Farris, D. R.
Item Type: Refine your search to only Article
open access

Adherence of Al/sub 2/O/sub 3/ to CoCrAl coatings. [1000-1200/sup 0/C]

Description: Adhesion between surface scale and protective coating is an essential requirement of a material possessing good overall oxidation resistance. Poor adhesion can lead to exfoliation of the oxide in response to thermal cycling, or mechanically applied stresses, resulting in enhanced oxidation rates. Marked improvements in scale/substrate adhesion can be obtained via the formation of protrusions of oxide growing into the substrate. These act to key the protective scale to the surface and are more e… more
Date: March 1, 1980
Creator: Whittle, D.P.; Boone, D.H. & Allam, I.M.
Item Type: Refine your search to only Article
open access

Advanced Gas-Cooled Nuclear Reactor Materials Evaluation and Development Program. Progress report, July 1, 1979-September 30, 1979

Description: The results of work performed from July 1, 1979 through September 30, 1979 on the Advanced Gas-Cooled Nuclear Reactor Materials Evaluation and Development Program are presented. The objectives of this program are to evaluate candidate alloys for Very High Temperature Reactor (VHTR) Nuclear Process Heat (NPH) and Direct Cycle Helium Turbine (DCHT) applications, in terms of the effect of simulated reactor primary coolant (helium containing small amounts of various other gases), high temperatures,… more
Date: March 7, 1980
Item Type: Refine your search to only Report
open access

Aerial Radiometric and Magnetic Reconnaissance Survey of Portions of Alabama, Georgia, Kentucky, Maryland, North Carolina, Ohio, Pennsylvania, Virginia, and West Virginia: Volume 1. Final Report

Description: Final report documenting a high-sensitivity airborne radiometric and magnetic survey of the Canton, Clarksburg, Cumberland, Charleston, Charlottesville, Jenkins, Bluefield, Roanoke, Corbin, Chattanooga, and Rome quadrangle areas including background information, a description of methods, data reduction and analysis, and data presented in maps, tables, and graphical forms.
Date: March 1980
Creator: Texas Instruments Incorporated
Item Type: Refine your search to only Report
open access

Aerial Radiometric and Magnetic Reconnaissance Survey of Portions of Alabama, Georgia, Kentucky, Maryland, North Carolina, Ohio, Pennsylvania, Virginia, and West Virginia: Volume 2-A. Canton Quadrangle

Description: Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Canton quadrangle including results of data interpretation, significance factor profile maps, stacked profiles, and histograms.
Date: March 1980
Creator: Texas Instruments Incorporated
Item Type: Refine your search to only Report
open access

Aerial Radiometric and Magnetic Reconnaissance Survey of Portions of Alabama, Georgia, Kentucky, Maryland, North Carolina, Ohio, Pennsylvania, Virginia, and West Virginia: Volume 2-B. Clarksburg Quadrangle

Description: Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Clarksburg quadrangle including results of data interpretation, significance factor profile maps, stacked profiles, and histograms.
Date: March 1980
Creator: Texas Instruments Incorporated
Item Type: Refine your search to only Report
open access

Aerial Radiometric and Magnetic Reconnaissance Survey of Portions of Alabama, Georgia, Kentucky, Maryland, North Carolina, Ohio, Pennsylvania, Virginia, and West Virginia: Volume 2-C. Cumberland Quadrangle

Description: Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Cumberland quadrangle including results of data interpretation, significance factor profile maps, stacked profiles, and histograms.
Date: March 1980
Creator: Texas Instruments Incorporated
Item Type: Refine your search to only Report
open access

Aerial Radiometric and Magnetic Reconnaissance Survey of Portions of Alabama, Georgia, Kentucky, Maryland, North Carolina, Ohio, Pennsylvania, Virginia, and West Virginia: Volume 2-D. Charleston Quadrangle

Description: Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Charleston quadrangle including results of data interpretation, significance factor profile maps, stacked profiles, and histograms.
Date: March 1980
Creator: Texas Instruments Incorporated
Item Type: Refine your search to only Report
open access

Aerial Radiometric and Magnetic Reconnaissance Survey of Portions of Alabama, Georgia, Kentucky, Maryland, North Carolina, Ohio, Pennsylvania, Virginia, and West Virginia: Volume 2-E. Charlottesville Quadrangle

Description: Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Charlottesville quadrangle including results of data interpretation, significance factor profile maps, stacked profiles, and histograms.
Date: March 1980
Creator: Texas Instruments Incorporated
Item Type: Refine your search to only Report
open access

Aerial Radiometric and Magnetic Reconnaissance Survey of Portions of Alabama, Georgia, Kentucky, Maryland, North Carolina, Ohio, Pennsylvania, Virginia, and West Virginia: Volume 2-F. Jenkins Quadrangle

Description: Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Jenkins quadrangle including results of data interpretation, significance factor profile maps, stacked profiles, and histograms.
Date: March 1980
Creator: Texas Instruments Incorporated
Item Type: Refine your search to only Report
open access

Aerial Radiometric and Magnetic Reconnaissance Survey of Portions of Alabama, Georgia, Kentucky, Maryland, North Carolina, Ohio, Pennsylvania, Virginia, and West Virginia: Volume 2-G. Bluefield Quadrangle

Description: Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Bluefield quadrangle including results of data interpretation, significance factor profile maps, stacked profiles, and histograms.
Date: March 1980
Creator: Texas Instruments Incorporated
Item Type: Refine your search to only Report
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