10 Matching Results

Explore Results

Results: 1 - 10
open access

Strongly coupled ionic mixtures and the H/He EOS

Description: This paper summarizes recent work on the strongly coupled OCP and Binary Ionic Mixture equation of state and other thermodynamic quantities in white dwarf interior conditions for both fluid and solid phases with the assumption of a uniform background. Conditions for phase separation of different elements in fluid or solid phases is strongly dependent on deviations from the linear mixing rule which gives the equation of state as an additive function of the OCP equation of state. These deviations… more
Date: December 2, 1993
Creator: DeWitt, H. E.
Partner: UNT Libraries Government Documents Department
open access

Improved measurement accuracy in a Long Trace Profiler: Compensation for laser pointing instability

Description: Laser pointing instability adds to the error of slope measurements taken with the Long Trace Profiler (LTP). As with carriage pitch error, this laser pointing error must be accounted for and subtracted from the surface under test (SUT) slope measurement. In the past, a separate reference beam (REF) allowed characterization of the component of slope error from carriage pitch. However, the component of slope error from laser pointing manifests itself differently in the SUT measured slope. An anal… more
Date: August 2, 1993
Creator: Irick, S. C.
Partner: UNT Libraries Government Documents Department
open access

Overview of the Chemical Weapons Convention

Description: My subject this morning is a very brief overview of the Chemical Weapons Convention. Much has already been written describing and summarizing the Convention, including several of the Supplementary Papers and the Annex contained within the draft Manual. It is not my goal to restate what many of you already know. Rather, in the short time available, I want to focus on the parts of the Convention that are addressed in the draft Manual, that is, I want to highlight for you those aspects of the CWC … more
Date: December 2, 1993
Creator: Tanzman, E. A.
Partner: UNT Libraries Government Documents Department
open access

Regenerative fuel cells for High Altitude Long Endurance Solar Powered Aircraft

Description: High Altitude Long Endurance (HALE) unmanned missions appear to be feasible using a lightweight, high efficiency, span-loaded, Solar Powered Aircraft (SPA) which includes a Regenerative Fuel Cell (RFC) system and novel tankage for energy storage. An existing flightworthy electric powered flying wing design was modified to incorporate present and near-term technologies in energy storage, power electronics, aerodynamics, and guidance and control in order to design philosophy was to work with vend… more
Date: June 2, 1993
Creator: Mitlitsky, F.; Colella, N. J.; Myers, B. & Anderson, C. J.
Partner: UNT Libraries Government Documents Department
open access

Analytic properties of the OCP and ionic mixtures in the strongly coupled fluid state

Description: Exact results for the Madelung constants and first order anharmonic energies are given for the inverse power potentials with the Coulomb potential as the softest example. Similar exact results are obtained using the analysis of Rosenfeld on the {Gamma} {yields} {infinity} limit for the OCP internal energy, direct correlation function, screening function, and bridge functions. Knowing these exact limits for the fluid phase of the OCP allows one to determine the nature of the thermal corrections … more
Date: December 2, 1993
Creator: DeWitt, H. E.
Partner: UNT Libraries Government Documents Department
open access

Graphical user interface for AMOS and POISSON

Description: A graphical user interface (GUI) exists for building model geometry for the time-domain field code, AMOS. This GUI has recently been modified to build models and display the results of the Poisson electrostatic solver maintained by the Los Alamos Accelerator Code Group called POISSON. Included in the GUI is a 2-D graphic editor allowing interactive construction of the model geometry. Polygons may be created by entering points with the mouse, with text input, or by reading coordinates from a fil… more
Date: March 2, 1993
Creator: Swatloski, T. L.
Partner: UNT Libraries Government Documents Department
open access

Nuclear weapons issues in South Asia

Description: This report discusses how the US can play a productive mediating role in South Asia by engaging India and Pakistan in an international forum to manage nuclear weapons, as Edward Teller advocated. India and Pakistan have developed their nuclear capabilities because they fear their neighbors, not because they want to threaten fear their neighbors, not because they want to threaten the US. The appropriate response for the US, therefore, is diplomatic engagement and negotiations. In addition to the… more
Date: July 2, 1993
Creator: Joeck, N.
Partner: UNT Libraries Government Documents Department
open access

Economics of electron beam and electrical discharge processing for post-combustion NO{sub x} control in internal combustion engines

Description: This paper discusses the physics and chemistry of non-thermal plasma processing for post-combustion NO{sub x} control in internal combustion engines. A comparison of electron beam and electrical discharge processing is made regarding their power consumption, radical production, NO{sub x} removal mechanisms, and by-product formation. Pollution control applications present a good opportunity for transferring pulsed power techniques to the commercial sector. However, unless advances are made to dr… more
Date: August 2, 1993
Creator: Penetrante, B. M.
Partner: UNT Libraries Government Documents Department
open access

Dual-band infrared capabilities for imaging buried object sites

Description: We discuss dual-band infrared (DBIR) capabilities for imaging buried object sizes. We identify physical features affecting thermal contrast needed to distinguish buried object sites from undisturbed sites or surface clutter. Apart from atmospheric transmission and system performance, these features include: object size, shape, and burial depth; ambient soil, disturbed soil and object site thermal diffusivity differences; surface temperature, emissivity, plant-cover, slope, albedo and roughness … more
Date: April 2, 1993
Creator: Del Grande, N. K.; Durbin, P. F.; Gorvad, M. R.; Perkins, D. E.; Clark, G. A.; Hernandez, J. E. et al.
Partner: UNT Libraries Government Documents Department
open access

Dealing with the chlorinated solvent situation at the Oak Ridge Y-12 Plant

Description: Recent events regarding health and environmental problems associated with the use of chlorinated solvents have prompted the Oak Ridge Y-12 Plant to investigate substitutes for these materials. Since 1987, the purchase of chlorinated solvents at the Y-12 Plant has been reduced by 92%. This has been accomplished by substituting chlorinated solvent degreasing with ultrasonic aqueous detergent cleaning and by substituting chlorinated solvents with less toxic, environmentally friendly solvents for h… more
Date: August 2, 1993
Creator: Thompson, L. M. & Simandl, R. F.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen