UNT Libraries Government Documents Department - 19 Matching Results

Search Results

Results: 1 - 19
open access

Chemistry of zirconium related to the behavior of nuclear fuel cladding. Final report

Description: Studies of the chemistry of the zirconium-iodine and zirconium-oxygen systems were undertaken to elucidate their thermodynamics and kinetics. It is anticipated that the results obtained will lead to an improved understanding of the chemical processes involved in chemically assisted fuel rod failures. This project not only has classified the thermodynamics of both the gas phase and the solids in the zirconium-iodine system, it has also provided valuable information on the chemisorption of iodine… more
Date: March 26, 1980
Creator: Cubicciotti, D.
Item Type: Refine your search to only Report
open access

Cryogenic system for the mirror fusion test facility

Description: The Mirror Fusion Test Facility (MFTF), currently being constructed at the Lawrence Livermore Laboratory, has large superconducting magnets, cryopanels, and supporting cryogenic equipment that will comprise one of the world's largest liquid helium (LHe) systems. The facility will provide mirror magnetic confinement for experimental fusion plasmas that will be approximately the same physical size as if in a conceptual fusion reactor. The cryogenic system typifies the magnitude and makeup of syst… more
Date: February 26, 1980
Creator: VanSant, J. H.; Slack, D. S. & Nelson, R. L.
Item Type: Refine your search to only Article
open access

Development of surface mine cost estimating equations

Description: Cost estimating equations were developed to determine capital and operating costs for five surface coal mine models in Central Appalachia, Northern Appalachia, Mid-West, Far-West, and Campbell County, Wyoming. Engineering equations were used to estimate equipment costs for the stripping function and for the coal loading and hauling function for the base case mine and for several mines with different annual production levels and/or different overburden removal requirements. Deferred costs were t… more
Date: September 26, 1980
Item Type: Refine your search to only Report
open access

Double-shell inertial confinement fusion target fabrication

Description: First generation hemishells, from which spherical shells are constructed, were fabricated by micromachining coated mandrels and by molding. The remachining of coated mandrels are described in detail. Techniques were developed for coating the microsized mandrels with polymeric and metallic materials by methods including conformal coating, vapor deposition, plasma polymerization and thermoforming. Micropositioning equipment and bonding techniques have also been developed to assemble the hemishell… more
Date: August 26, 1980
Creator: Hatcher, C. W.; Lorensen, L. E. & Weinstein, B. W.
Item Type: Refine your search to only Article
open access

Equations of state for self-excited MHD generator studies

Description: We have constructed a state-of-the-art equation of state (EOS) for argon covering the temperature density range attainable by currently proposed self-excited MHD generators. The EOS for conditions in the flow channel was obtained primarily by a non-ideal plasma code (ACTEX) that is based on a many body activity expansion. For conditions in the driver chamber the EOS was primarily obtained from a fluid code (HDFP) that calculates the fluid properties from perturbation theory based on the insulat… more
Date: February 26, 1980
Creator: Rogers, F. J.; Ross, M.; Haggin, G. L. & Wong, L. K.
Item Type: Refine your search to only Report
open access

Evaluation of a relativistic electron ring system as a plasma target for buildup of compact-toroid configurations

Description: A review of the idea of using plasma-loaded electron rings as buildup targets for future compact-toroid machines is presented. Present experiments at Cornell University and Nagoya University are analyzed, and the need for auxiliary heating to reach interesting temperatures is described. Consideration of the effect of two-stream instability, toroidal field, and plasma containment are discussed.
Date: June 26, 1980
Creator: Condit, W.C.
Item Type: Refine your search to only Article
open access

Impact and compliance: OSHA Carcinogen Policy

Description: This document provides an examination of various aspects of the Occupational Safety and Health Administration (OSHA)Carcinogen Policy. To satisfy the dimensions of the Policy's broad, general nature, a two-fold approach was taken. Throughout, the focus is on the possible effects of the Policy's implementation, but this is first approached as it generally will effect research and compliance activities across broad industry sectors, while specific impacts on DOE are addressed separately… more
Date: June 26, 1980
Creator: Meyer, A. F., Jr.; Crowder, C.; Wisniewski, S.; Russell, T. & Senn, K.
Item Type: Refine your search to only Report
open access

Interferometric measurements of multilayer and double shell inertial fusion targets

Description: Optical interference microscopy plays an important role in the measurement of targets for inertial confinement fusion experiments. We describe how these techniques are applied to the measurement of thickness and refractive index of multilayer films on both flat substrates and microsphere targets. We also discuss procedures for manipulating and examining microsphere targets to measure defects and wall thickness variations anywhere on the target. Finally, we describe the use of optical interferom… more
Date: August 26, 1980
Creator: Weinstein, B.W.; Weir, J.T. & Willenborg, D.L.
Item Type: Refine your search to only Article
open access

Metal coatings for laser fusion targets by electroplating

Description: Metal coated laser fusion targets must be dense, uniform spherically symmetric to within a few percent of their diameters and smooth to better than a few tenths of a micron. Electroplating offers some unique advantages including low temperature deposition, a wide choice of elements and substantial industrial plating technology. We have evaluatd electroless and electroplating systems for gold and copper, identified the factors responsible for small grain size, and plated glass microspheres with … more
Date: August 26, 1980
Creator: Illige, J. D.; Yu, C. M. & Letts, S. A.
Item Type: Refine your search to only Article
open access

Project CARDS technical information record: parametric and sensitivity analysis and determination of response spectra for horizontal, vertical and rotational motion of a radioactive material shipping package relative to the motion of its support (railcar). Part 2. Continuation of CARDS-TIR-80-3 (Preliminary)

Description: The generation of the response spectra was coupled to a parametric and sensitivity analysis. Support accelerations and tiedown forces are presented as functions of time. The parametric analysis found that the horizontal acceleration of the support and the MAR (max absolute relative) horizontal acceleration are relatively insensitive, while the corresponding vertical accelerations are highly sensitive to changes in 4 of the 13 parameters, and the corresponding rotational accelerations are highly… more
Date: November 26, 1980
Creator: Fields, S.R.
Item Type: Refine your search to only Report
open access

Rate Dependent Inelastic Behavior of Polycrystalline Solids Using a Dislocation Model

Description: A rate dependent theory of polycrystalline plasticity is presented in which the solid is modeled as an isotropic continuum with internal variables. The rate of plastic deformation is shown to be a function of the deviatoric portion of the Cauchy stress tensor as well as two scalar internal variables. The scalar internal variables, which are the dislocation density and mobile fraction, are governed by rate equations which reflect the evolution of microstructural processes. The model has been inc… more
Date: February 26, 1980
Creator: Werne, R. W. & Kelly, J. M.
Item Type: Refine your search to only Article
open access

Ultrasmooth plasma polymerized coatings for laser-fusion targets

Description: Coatings for laser fusion targets were deposited up to 135 ..mu..m thick by plasma polymerization onto 140 ..mu..m diameter DT filled glass microspheres. Ultrasmooth surfaces (no defect higher than 0.1 ..mu..m) were achieved by eliminating particulate contamination. Process generated particles were eliminated by determining the optimum operating conditions of power, gas flow, and pressure, and maintaining these conditions through feedback control. From a study of coating defects grown over know… more
Date: August 26, 1980
Creator: Letts, S. A.; Myers, D. W. & Witt, L. A.
Item Type: Refine your search to only Article
open access

Use of molecular beams to support microspheres during plasma coating

Description: Spherical laser fusion targets can be levitated on beams of Ar or other gas atoms. This is an especially useful and reliable technique for supporting microspheres during plasma coating or plasma etching. The reliability of this technique is principally the result of two things: the success of a special centering device which provides a lateral, stabilizing force on the levitated microspheres; and a gas handling system which is capable of controlling levitation gas flow in the microtorr liter/se… more
Date: August 26, 1980
Creator: Crane, J. K.; Smith, R. D.; Johnson, W. L.; Letts, S. A.; Korbel, G. R. & Krenick, R. M.
Item Type: Refine your search to only Article
open access

Use of molecular beams to support microspheres during plasma coating

Description: Spherical targets can be levitated on beams of Ar or other gas atoms. This is an especially useful technique for supporting microspheres during plasma coating and processing. Measurements of gas flow and pressure indicate that the levitation device operates in the regime of Knudsen's flow. This device is currently being used in the development of future generation laser targets.
Date: August 26, 1980
Creator: Crane, J. K.; Smith, R. D.; Johnson, W. L.; Jordan, C. W.; Letts, S. A.; Korbel, G. R. et al.
Item Type: Refine your search to only Article
open access

X-ray backlighting requirements for the double-shell target

Description: We have analyzed one specific NOVA double-shell target design and have determined the x-ray energies required for probing the performance of the implosion. It is virtually impossible to study the compression of the fuel or the motion of the inner pusher. An x-ray energy of about 9 keV appears to be ideal for measuring the behavior of the outer TaCOH shell for the majority of its travel. However, it would be advantageous to have an x-ray source of about 25 keV to measure the contact between the … more
Date: August 26, 1980
Creator: Larsen, J. T.
Item Type: Refine your search to only Report
Back to Top of Screen