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2-D time evolution of T/sub e/ during sawtooth crash based on fast ECE (electron cyclotron emission) measurements on TFTR

Description: Electron cyclotron emission measurements taken at 20 locations in the horizontal midplane during a sawtooth crash have been analysed based on the assumption of fast rigid rotation of the plasma. Due to this fast rotation (approx.100..mu..sec), which remains fairly constant throughout the sawtooth crash, we have been able to make time-to-space reconstructions of half the poloidal plane using points which are separated in time by not more than 40..mu..sec. The existence of a temperature flattenin… more
Date: December 1, 1988
Creator: Kuo-Petravic, G.
Item Type: Refine your search to only Report
open access

Accumulated surface damage on ZnS crystals produced by closely spaced pairs of picosecond laser pulses

Description: Excitation of a transparent ZnS crystal by repetitive picosecond dye laser pulses causes an accumulated surface modification leading to optical damage. The onset of the damage is detected by an abrupt increase in the emission of neutral Zn (and possibly S/sub 2/) from the surface. Comparison of the neutral emission thresholds with pulse-pair and single-pulse excitation shows that linear absorption is the dominant laser-surface interaction. In general, this measurement technique shows considerab… more
Date: December 1, 1988
Creator: Chase, L. L. & Lee, H. W. H.
Item Type: Refine your search to only Article
open access

Acoustic microscopy with mixed-mode transducers

Description: The new amplitude-phase acoustic microscope is versatile; it operates in a wide frequency range 1--200 MHz, with selection of longitudinal, shear, and mixed modes. This enables it to be used in many NDE applications for different kinds of materials. Besides the application examples presented in this paper (bulk defect imaging of lossy materials or at deep locations; leads of IC chip in epoxy package; amplitude images of surface crack on Si nitride ball bearing; thin Au film on quartz), this sys… more
Date: December 31, 1988
Creator: Chou, C. H.; Parent, P. & Khuri-Yakub, B. T.
Item Type: Refine your search to only Article
open access

Adaptive significance of root grafting in trees

Description: Root grafting has long been observed in forest trees but the adaptive significance of this trait has not been fully explained. Various authors have proposed that root grafting between trees contributes to mechanical support by linking adjacent root systems. Keeley proposes that this trait would be of greatest advantage in swamps where soils provide poor mechanical support. He provides as evidence a greenhouse study of Nyssa sylvatica Marsh in which seedlings of swamp provenance formed between-i… more
Date: December 31, 1988
Creator: Loehle, C. & Jones, R.
Item Type: Refine your search to only Report
open access

Advanced alternate planar geometry solid oxide fuel cells. Third interim quarterly technical progress report, July 1, 1988--September 30, 1988

Description: The following Ceramatec tasks are reported: electrolyte development and fabrication, edge seal development/fabrication, electrode, and interconnector. The following IGT tasks are reported: cell design analysis, and program liaison and test facility preparation.
Date: December 31, 1988
Creator: Prouse, D.; Elangovan, S.; Khandkar, A.; Donelson, R. & Marianowski, L.
Item Type: Refine your search to only Report
open access

Advanced energy design and operation technologies research: Recommendations for a US Department of Energy multiyear program plan

Description: This document describes recommendations for a multiyear plan developed for the US Department of Energy (DOE) as part of the Advanced Energy Design and Operation Technologies (AEDOT) project. The plan is an outgrowth of earlier planning activities conducted for DOE as part of design process research under the Building System Integration Program (BSIP). The proposed research will produce intelligent computer-based design and operation technologies for commercial buildings. In this document, the c… more
Date: December 1, 1988
Creator: Brambley, M. R.; Crawley, D. B.; Hostetler, D. D.; Stratton, R. C.; Addison, M. S.; Deringer, J. J. et al.
Item Type: Refine your search to only Report
open access

Advanced Water-Cooled Phosphoric Acid Fuel Cell Development. Quarterly technical progress report No. 5, July--September 1988

Description: The initial conceptual design configuration was completed. Baseline on-site electrodes were tested at electric utility conditions in 2 x 2 inch cells. GSB-18P cathodes were fabricated. Design of small area development stack was initiated and long lead time items ordered. Molded cooler thermal cycling tests were initiated. Equipment to evaluate alternative manifold coating processes and materials were procured.
Date: December 31, 1988
Item Type: Refine your search to only Report
open access

Ambient ground motion at the 7 GeV site at Argonne National Laboratory over extended time periods

Description: Successful operation of the APS facility requires a very stable particle beam. Vibration coupled through mechanical systems, such as magnet supports, beam tube supports, and other paths can cause deterioration of the particle beam. There are two sources of vibration: external, or far field, which is generated external to the APS site and internal, or near field, which is generated on site and associated with operation of the facility. Internal vibration sources can be controlled or minimized us… more
Date: December 1, 1988
Creator: Jendrzejczyk, J.A.; Nagy, Z. & Smith, R.K.
Item Type: Refine your search to only Report
open access

Amorphization of Zr/sub 3/Al by hydrogenation and subsequent electron irradiation

Description: 1-MeV electron irradiation of hydrogenated Zr/sub 3/Al (Zr/sub 3/AlH/sub 0.96/) at 10K is studied. A more than 20 fold reduction in the critical dose required for complete amorphization is observed for the hydrogenated specimen as compared to the un-hydrogenated Zr/sub 3/Al under identical irradiation conditions. 11 refs., 4 figs.
Date: December 1, 1988
Creator: Meng, W. J.; Koike, J.; Okamoto, P. R. & Rehn, L. E.
Item Type: Refine your search to only Article
open access

Analyses in support of the Laboratory Microfusion Facility and ICF commercial reactor designs

Description: Our work on this contract was divided into two major categories; two thirds of the total effort was in support of the Laboratory Microfusion Facility (LMF), and one third of the effort was in support of Inertial Confinement Fusion (ICF) commercial reactors. This final report includes copies of the formal reports, memoranda, and viewgraph presentations that were completed under this contract.
Date: December 28, 1988
Creator: Meier, W. R. & Monsler, M. J.
Item Type: Refine your search to only Report
open access

Analysis of an m = 1 electrostatic barrier scrape-off layer as a technique for reducing and controlling the particle and energy losses on the large major radius edge of tokamak

Description: It is observed in many tokamaks that particle and heat fluxes from the core region are poloidally asymmetric, favoring higher cross field transport on the large major radius edge of the torus. We propose a novel technique that may allow one to control this asymmetric flux into the tokamak boundary plasma. The scheme principally involves the formation of a mobility limited transport layer or 'electrostatic barrier' to inhibit the flow of plasma into the boundary layer at large major radii, forci… more
Date: December 1, 1988
Creator: LaBombard, B. & Conn, R.W.
Item Type: Refine your search to only Report
open access

Analysis of CMX hydraulic data for the Mark 22

Description: The original CMX hydraulic data for the Mark 22 assembly, obtained by L.W. Ridenhour in 1972, is analyzed and documented. Comparisons are made to Ridenhour's working notebooks and summary document, and to the Mark 22 hydraulics manual. Several errors in these documents are corrected. Correlations are given in a form suitable for revisions to the hydraulics manual. The experimental setup and measurements are briefly described, and the original data is compiled in the appendix to this report. An … more
Date: December 16, 1988
Creator: Koffman, L. D.
Item Type: Refine your search to only Report
open access

Analysis of Momentum and Impurity Confinement in TFTR. [Annual Report, 1989]

Description: The accomplishments to date of this research in collaboration with PPPL are the following: (1) full access capability to the TFTR data system has been achieved at Georgia Tech; (2) procedures to enable PPPL codes to be used in conjunction with ``in house`` programs for data analysis have been developed; (3) evaluation of the experimental data has been performed; and (4) a preliminary comparison of several momentum transport theories against experimental measurements has been performed.
Date: December 31, 1988
Item Type: Refine your search to only Report
open access

Analytical Chemistry Laboratory: Progress report for FY 1988

Description: The purpose of this report is to summarize the activities of the Analytical Chemistry Laboratory (ACL) at Argonne National Laboratory (ANL) for fiscal year 1988 (October 1987 through September 1988). The Analytical Chemistry Laboratory is a full-cost recovery service center, with the primary mission of providing a broad range of analytical chemistry support services to the scientific and engineering programs at ANL. In addition, the ACL conducts a research program in analytical chemistry, works… more
Date: December 1, 1988
Creator: Green, D. W.; Heinrich, R. R.; Graczyk, D. G.; Lindahl, P. C. & Erickson, M. D.
Item Type: Refine your search to only Report
open access

Annual site environmental report for calendar year 1988

Description: The Western Area Power Administration (Western) has established a formal environmental protection, auditing, monitoring, and planning program which has been in effect since 1978. The significant environmental projects and issues Western was involved with in 1988 are discussed in this annual site environmental report. It is written to demonstrate the nature and effectiveness of the environmental protection program. Western is responsible for the operation and maintenance of 16,376 miles of trans… more
Date: December 31, 1988
Item Type: Refine your search to only Report
open access

The application of light-cone quantization to quantum chromodynamics in one-plus-one dimensions

Description: Formal and computational aspects of light cone quantization are studied by application to quantum chromodynamics (QCD) in one spatial plus one temporal dimension. This quantization scheme, which has been extensively applied to perturbative calculations, is shown to provide an intuitively appealing and numerically tractable approach to non-perturbative computations as well. In the initial section, a light-cone quantization procedure is developed which incorporates fields on the boundaries. This … more
Date: December 1, 1988
Creator: Hornbostel, K.J.
Item Type: Refine your search to only Report
open access

Application of Quaternary Phase Diagrams to Compound Semiconductor Processing. Progress Report, April 1, 1988--December 31, 1988

Description: This paper considers the application of quaternary phase diagrams to understanding and predicting the behavior of II-VI thin film interfaces in photovoltaic devices under annealing conditions. Examples, listed in a table, include semiconductor/insulator/semiconductor (SIS) layered structures, II-VI/II-VI and III-V/II-VI epitaxial heterojunctions and oxidation of ternary compounds. Solid solubility is taken into account for quaternary phase diagrams of semiconductor systems. Using free energies … more
Date: December 31, 1988
Creator: Schwartzman, A.
Item Type: Refine your search to only Report
open access

Application of rock melting to construction of storage holes for nuclear waste

Description: Rock melting technology can provide in-situ glass liners in nuclear waste package emplacement holes to reduce permeability and increase borehole stability. Reduction of permeability would reduce the time and probability of groundwater contacting the waste packages. Increasing the stability of the storage boreholes would enhance the retrievability of the nuclear waste packages. The rock melting hole forming technology has already been tested in volcanic tuff similar to the geology at the propose… more
Date: December 31, 1988
Creator: Neudecker, J.W. Jr.
Item Type: Refine your search to only Article
open access

Applications of interference theory to single failure modes

Description: REL02 is a computer code which provides a designer and analyst with a mathematical tool to calculate the expected failure probability under a variety of assumptions of the form of two overlapping probability distributions. This code has extended the solutions of closed-form calculations to the applications involving truncated normal and Weibull distribution as well as the uniform distribution. These distributions have been found to describe the variations which exist in (a) analytical predictio… more
Date: December 31, 1988
Creator: Rauth, D. R. & Lusardi, D. J.
Item Type: Refine your search to only Article
open access

Arctic hydrology and meteorology. Annual report

Description: The behavior of arctic ecosystems is directly related to the ongoing physical processes of heat and mass transfer. Furthermore, this system undergoes very large fluctuations in the surface energy balance. The buffering effect of both snow and the surface organic soils can be seen by looking at the surface and 40 cm soil temperatures. The active layer, that surface zone above the permafrost table, is either continually freezing or thawing. A large percentage of energy into and out of a watershed… more
Date: December 31, 1988
Creator: Kane, D. L.
Item Type: Refine your search to only Report
open access

Assessment of aquatic organisms as bioindicators of historical radionuclide release to the Columbia River

Description: This study examined the potential for using several aquatic organisms as biological indicators of historic levels of radionuclides released to the Hanford Reach of the Columbia River. The purpose of the study was to determine the types of environmental samples that could be collected to further our understanding of previous releases of radionuclides at Hanford. Information was initially collected to determine the relative abundance and persistence of radionuclides historically released at Hanfo… more
Date: December 1, 1988
Creator: Dauble, D. D.; Poston, T. M. & Newell, R. L.
Item Type: Refine your search to only Report
open access

Assessment of seismic hazards at Yucca Mountain

Description: During the preclosure time period (approximately 100 yr), the prospective geologic repository at Yucca Mountain must provide for public and worker radiological safety and retrievability of emplaced waste. During the postclosure period (10,000 yr), the repository must ensure that cumulative radionulclide releases to the accessible environment comply with EPA release limits. Substantially complete containment must be provided by the waste packages for 300-1000 yr. All of these functions must be m… more
Date: December 31, 1988
Creator: King, J. L.; Frazier, G. A. & Grant, T. A.
Item Type: Refine your search to only Article
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