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Dynamics of Supersymmetric SU(n_c) and USp(2n_c) Gauge Theories

Description: We study dynamical flavor symmetry breaking in the context of a class of N=1 supersymmetric SU(n_c) and USp(2 n_c) gauge theories, constructed from the exactly solvable N=2 theories by perturbing them with small adjoint and generic bare hypermultiplet (quark) masses. We find that the flavor U(n_f) symmetry in SU(n_c) theories is dynamically broken to $U(r)\times U(n_f-r)$ groups for $n_f \leq n_c$. In the r=1 case the dynamical symmetry breaking is caused by the condensation of monopoles in the… more
Date: January 7, 2000
Creator: Carlino, Giuseppe; Konishi, Kenichi & Murayama, Hitoshi
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Longevity of Emplacement Drift Ground Support Materials

Description: The purpose of this analysis is to evaluate the factors affecting the longevity of emplacement drift ground support materials and to develop a basis for selection of materials for ground support that will function throughout the preclosure period. The Development Plan (DP) for this analysis is given in CRWMS M&O (Civilian Radioactive Waste Management System Management and Operating Contractor) (1999a). The candidate materials for ground support are steel (carbon steel, ductile cast iron, ga… more
Date: January 7, 2000
Creator: Tang, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Preconditioning Newton-Krylor Methods for Variably Saturated Flow

Description: In this paper, we compare the effectiveness of three preconditioning strategies in simulations of variably saturated flow. Using Richards' equation as our model, we solve the nonlinear system using a Newton-Krylov method. Since Krylov solvers can stagnate, resulting in slow convergence, we investigate different strategies of preconditioning the Jacobian system. Our work uses a multigrid method to solve the preconditioning systems, with three different approximations to the Jacobian matrix. One … more
Date: January 7, 2000
Creator: Woodward, C. S. & Jones, J. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Hanford Seismic Annual Report and Fourth Quarter Report for Fiscal Year 1999

Description: This report provides the seismic record at Hanford for FY 1998. Hanford Seismic Monitoring provides an uninterrupted collection of high-quality raw and processed seismic data from the Hanford Seismic Network (HSN) for the U.S. Department of Energy and its contractors. Hanford Seismic Monitoring also locates and identifies sources of seismic activity and monitors changes in the historical pattern of seismic activity at the Hanford Site. The data are compiled, archived, and published for use by t… more
Date: January 7, 2000
Creator: Hartshorn, Donald C.; Reidel, Steve P. & Rohay, Alan C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

SUBSURFACE REPOSITORY INTEGRATED CONTROL SYSTEM DESIGN

Description: The primary purpose of this document is to develop a preliminary high-level functional and physical control system architecture for the potential repository at Yucca Mountain. This document outlines an overall control system concept that encompasses and integrates the many diverse process and communication systems being developed for the subsurface repository design. This document presents integrated design concepts for monitoring and controlling the diverse set of subsurface operations. The Su… more
Date: January 7, 2000
Creator: Randle, D.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Separations technologies supporting the development of a deployable ATW system

Description: A program has been initiated for the purpose of developing the chemical separations technologies necessary to support a large Accelerator Transmutation of Waste (ATW) system capable of dealing with the projected inventory of spent fuel from the commercial nuclear power stations in the United States. The first several years of the program will be directed toward an elucidation of related technical issues and to the establishment, by means of comprehensive trade studies, of an optimum configurati… more
Date: January 7, 2000
Creator: Laidler, J. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Energy consumption and expenditure projections by population group on the basis of the annual energy outlook 1999 forecast

Description: This report presents an analysis of the relative impact of the base-case scenario used in Annual Energy Outlook 1999 on different population groups. Projections of energy consumption and expenditures, as well as energy expenditure as a share of income, from 1996 to 2020 are given. The projected consumption of electricty, natural gas, distillate fuel, and liquefied petroleum gas during this period is also reported for each population group. In addition, this report compares the findings of the A… more
Date: January 7, 2000
Creator: Poyer, D.A. & Balsley, J.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Something new under the sun -- Office of Solar Energy Technologies

Description: Three of the U.S. Department of Energy's solar technology programs are now under one umbrella: the Office of Solar Energy Technologies or the Solar Office. The solar programs of photovoltaics, concentrating solar power, and solar buildings are now integrated into this office where DOE can combine administrative efforts, build on the strengths of each program, and encourage cooperation that bolsters the impact of each technology.
Date: January 7, 2000
Creator: National Renewable Energy Laboratory (U.S.)
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
open access

Effect of electron transport properties on unipolar CdZnTe radiation detectors: LUND, SpectrumPlus, and Coplanar Grid

Description: Device simulations of (1) the laterally-contacted-unipolar-nuclear detector (LUND), (2) the SpectrumPlus, (3) and the coplanar grid made of Cd{sub 0.9}Zn{sub 0.1}Te (CZT) were performed for {sup 137}Cs irradiation by 662.15 keV gamma-rays. Realistic and controlled simulations of the gamma-ray interactions with the CZT material were done using the MCNP4B2 Monte Carlo program, and the detector responses were simulated using the Sandia three-dimensional multielectrode simulation program (SandTMSP)… more
Date: January 7, 2000
Creator: James, Ralph B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

LLE Review, Quarterly Report: Volume 80, July-September 1999

Description: This volume of the LLE Review, covering the period July-September 1999, features a theoretical analysis of a process that generates mass perturbations of an imploding target driven by modulated laser illumination. The process, referred to as laser imprint, impacts the integrity of the shell during direct-drive implosions, potentially quenching target performance. In this article V. N. Goncharov, J. A. Delettrez, S. Skupsky, and R. P. J. Town present a model of the generation of mass perturbatio… more
Date: January 7, 2000
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Optical properties of Cd{sub 0.9}Zn{sub 0.1}Te studied by variable angle spectroscopic ellipsometry between 0.75 and 6.24 eV

Description: Optical properties of Cd{sub 0.9}Zn{sub 0.1}Te (CZT) were studied by variable angle spectroscopic ellipsometry (VASE). Measurements made by VASE were performed on CZT and CdTe samples in air at room temperature at multiple angles of incidence. A parametric function model was employed in the VASE analysis to determine the dielectric functions {var_epsilon}={var_epsilon}{sub 1} + i{var_epsilon}{sub 2} in the range of 0.75 to 6.24 eV. A two-oscillator analytical model was used to describe the diel… more
Date: January 7, 2000
Creator: James, Ralph B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Compensation and trapping in CdZnTe radiation detectors studied by thermoelectric emission spectroscopy, thermally stimulated conductivity, and current-voltage measurements

Description: In today's commercially available counter-select-grade CdZnTe crystals for radiation detector applications, the thermal ionization energies of the traps and their types, whether electron or hole traps, were measured. The measurements were successfully done using thermoelectric emission spectroscopy (TEES) and thermally stimulated conductivity (TSC). For reliability, the electrical contacts to the sample were found to be very important and, instead of Au Schottky contacts, In Ohmic contacts had … more
Date: January 7, 2000
Creator: James, Ralph B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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