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An aluminum resist substrate for microfabrication by LIGA.

Description: Resist substrates used in the LIGA process must provide high initial bond strength between the substrate and resist, little degradation of the bond strength during x-ray exposure, acceptable undercut rates during development, and a surface enabling good electrodeposition of metals. Additionally, they should produce little fluorescence radiation and give small secondary doses in bright regions of the resist at the substrate interface. To develop a new substrate satisfying all these requirements,… more
Date: April 1, 2005
Creator: Kelly, James J.; Boehme, Dale R.; Hauck, Cheryl A. (Lawrence Berkeley National Laboratory, Berkeley, CA); Yang, Chu-Yeu Peter; Hunter, Luke L.; Griffiths, Stewart K. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Uncertainty analysis of heat flux measurements estimated using a one-dimensional, inverse heat-conduction program.

Description: The measurement of heat flux in hydrocarbon fuel fires (e.g., diesel or JP-8) is difficult due to high temperatures and the sooty environment. Un-cooled commercially available heat flux gages do not survive in long duration fires, and cooled gages often become covered with soot, thus changing the gage calibration. An alternate method that is rugged and relatively inexpensive is based on inverse heat conduction methods. Inverse heat-conduction methods estimate absorbed heat flux at specific mate… more
Date: February 1, 2005
Creator: Nakos, James Thomas; Figueroa, Victor G. & Murphy, Jill E. (Worcester Polytechnic Institute, Worcester, MA)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Rapid Undercooling and Refreeze in Laser-Shock-Melted Bi(Zn)

Description: We completed experiments in which we used a high-power laser to shock-melt a Bi(Zn) alloy and refreeze it in the shock release wave. We recovered the samples post shot for microscopic analysis and compared our results with the results from similar prior experiments with pure Bi. The targets in both sets of experiments were four-layer targets composed of BK7 glass, Al, the elemental Bi or Bi(Zn) alloy, and a transparent diagnostic window. There is conductive heating of the Bi through the Al laye… more
Date: November 4, 2005
Creator: Jankowski, Alan Frederic; Colvin, J.; Reed, B. & Kumar, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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PROBABILISTIC ANALYSES OF WASTE PACKAGE QUANTITIES IMPACTED BY POTENTIAL IGNEOUS DISRUPTION AT YUCCA MOUNTAIN

Description: A probabilistic analysis was conducted to estimate ranges for the numbers of waste packages that could be damaged in a potential future igneous event through a repository at Yucca Mountain. The analyses include disruption from an intrusive igneous event and from an extrusive volcanic event. This analysis supports the evaluation of the potential consequences of future igneous activity as part of the total system performance assessment for the license application for the Yucca Mountain Project (Y… more
Date: August 26, 2005
Creator: Wallace, M.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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SOME NATURAL CONDUIT ANALOGUES FOR POTENTIAL IGNEOUS ACTIVITY AT YUCCA MOUNTAIN

Description: Eruptive conduit geometry has direct relation to number of waste packages that would be damaged if a new volcano were to form at the proposed Yucca Mountain radioactive waste repository, and therefore is a key factor in predicting the consequences of such an eruption. Current risk calculations treat conduits as having circular plan view and range from a few meters to 150 m diameter at repository depths ({approx}300 m). We present new observations of shallow basaltic plumbing at analog sites aim… more
Date: August 26, 2005
Creator: Krier, D.J.; Keating, G.N. & Valentine, G.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development of A New Class of Fe-3Cr-W(V)Ferritic Steels for Industrial Process Applications

Description: The project, 'Development of a New Class of Fe-Cr-W(V) Ferritic Steels for Industrial Process Applications', was a Cooperative Research and Development Agreement (CRADA) between Oak Ridge National Laboratory (ORNL) and Nooter Corporation. This project dealt with improving the materials performance and fabrication for the hydrotreating reactor vessels, heat recovery systems, and other components for the petroleum and chemical industries. The petroleum and chemical industries use reactor vessels … more
Date: June 15, 2005
Creator: Sikka, V. J. & Jawad, M. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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POLARIZED HYDROGEN JET TARGET FOR MEASUREMENT OF RHIC PROTON BEAM POLARIZATION.

Description: The performance and unique features of the RHIC polarized jet target and our solutions to the important design constraints imposed on the jet by the RHIC environment are described. The target polarization and thickness were measured to be 0.924 {+-} 2% and 1.3 {+-} 0.2 x 10{sup 12} atoms/cm{sup 2} respectively.
Date: January 28, 2005
Creator: Makdisi, Y.; Wise, T.; Chapman, M.; Graham, D.; Kponou, A.; Mahler, G. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Design and Experimental Results for the S825 Airfoil; Period of Performance: 1998-1999

Description: A 17%-thick, natural-laminar-flow airfoil, the S825, for the 75% blade radial station of 20- to 40-meter, variable-speed and variable-pitch (toward feather), horizontal-axis wind turbines has been designed and analyzed theoretically and verified experimentally in the NASA Langley Low-Turbulence Pressure Tunnel. The two primary objectives of high maximum lift, relatively insensitive to roughness and low-profile drag have been achieved. The airfoil exhibits a rapid, trailing-edge stall, which doe… more
Date: January 1, 2005
Creator: Somers, D. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Accelerator and Ion Beam Tradeoffs for Studies of Warm Dense Matter

Description: One approach for heating a target to ''Warm Dense Matter'' conditions (similar, for example, to the interiors of giant planets or certain stages in Inertial Confinement Fusion targets), is to use intense ion beams as the heating source (see refs.[6] and [7] and references therein for motivation and accelerator concepts). By consideration of ion beam phase space constraints, both at the injector, and at the final focus, and consideration of simple equations of state and relations for ion stoppin… more
Date: May 13, 2005
Creator: Barnard, J. J.; Briggs, R. J.; Callahan, D. A.; Davidson, R. C.; Friedman, A.; Grisham, L. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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S829 Airfoil; Period of Performance: 1994--1995

Description: A 16%-thick, natural-laminar-flow airfoil, the S829, for the tip region of 20- to 40-meter-diameter, stall-regulated, horizontal-axis wind turbines has been designed and analyzed theoretically. The two primary objectives of restrained maximum lift, insensitive to roughness, and low profile drag have been achieved. The constraints on the pitching moment and the airfoil thickness have been satisfied. The airfoil should exhibit a docile stall.
Date: January 1, 2005
Creator: Somers, D. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effects of Airfoil Thickness and Maximum Lift Coefficient on Roughness Sensitivity: 1997--1998

Description: A matrix of airfoils has been developed to determine the effects of airfoil thickness and the maximum lift to leading-edge roughness. The matrix consists of three natural-laminar-flow airfoils, the S901, S902, and S903, for wind turbine applications. The airfoils have been designed and analyzed theoretically and verified experimentally in the Pennsylvania State University low-speed, low-turbulence wind tunnel. The effect of roughness on the maximum life increases with increasing airfoil thickne… more
Date: January 1, 2005
Creator: Somers, D. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Large-Scale PV Module Manufacturing Using Ultra-Thin Polycrystalline Silicon Solar Cells: Annual Subcontract Report, 1 October 2003--30 September 2004

Description: The major objectives of this program are to continue the advancement of BP Solar polycrystalline silicon manufacturing technology. The program includes work in the following areas: Efforts in the casting area to increase ingot size, improve ingot material quality, and improve handling of silicon feedstock as it is loaded into the casting stations; developing wire saws to slice 100- m-thick silicon wafers on 290- m centers; developing equipment for demounting and subsequent handling of very thin… more
Date: March 1, 2005
Creator: Wohlgemuth, J. & Narayanan, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Final Report for the Study on S-Implanted Alloy 22 in 1 M NaCl Solutions

Description: The objective of this study was to examine the effects of high levels of S in the near-surface region on the passivity of Alloy 22, a corrosion resistant Ni-Cr-Mo alloy, in deaerated 1 M NaCl solution. Near-surface concentrations of S up to 2 at.% were achieved in Alloy 22 test specimens by implanting them with S. The S-implanted samples were then evaluated in short-term electrochemical tests in the salt solution and subsequently analyzed with X-ray Photoelectron Spectroscopy (XPS) for film thi… more
Date: November 1, 2005
Creator: Windisch, Charles F.; Baer, Donald R.; Jones, R. H. & Engelhard, Mark H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fabrication of Planar Laser Targets with Sub-Micrometer Thickness Uniformity

Description: Lawrence Livermore National Laboratory routinely manufactures planar laser targets that consist of stacked and bonded foils for physics experiments on high-energy lasers. One recent planar laser target, the Equation of State target, had extremely tight specifications. The target required four bonded layers with thickness uniformities of several hundred nm, and the adhesive bonds between the layers could not exceed a few {micro}m. This paper describes the manufacturing process that was developed… more
Date: July 21, 2005
Creator: Bono, M J; Castro, C & Hibbard, R L
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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H Diffusion through Partially Internally Oxidized Pd-alloy Membranes (U)

Description: In 1998 Kirchheim et al remarked that ''to their knowledge, experimental results on the diffusion of hydrogen through multi-layers have not yet been reported'' [1]. Their research dealt with diffusion through ultra-thin multi-layers of Nb/Pd which they followed electrochemically using a time-lag method. Their results were somewhat uncertain in that no final conclusion about any effect of the internal interfaces could be reached. Very recently Yamakawa et al [2] investigated Pd/Fe and Pd/Ni mult… more
Date: October 1, 2005
Creator: Wang, D.; Flanagan, Ted B. & Shanahan, K. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Laser Measurement of SAM Bulk and Surface Wave Amplitudes for Material Microstructure Analysis

Description: Scanning Acoustic Microscopy (SAM) at ultra high frequencies has proven to be a useful tool for investigating materials on the scale of individual grains. This technique is normally performed in a reflection mode from one side of a sample surface. Information about the generation and transmission of bulk acoustic waves into the material is inferred from the reflection signal amplitude. We present an adaptation to the SAM method whereby the acoustic bulk waves are directly visualized through las… more
Date: July 1, 2005
Creator: Telschow, Ken L.; Miyasaka, Chiaki & Cottle, David L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Diagnosing the PEP-II Injection System

Description: The injection of beam into the PEP-II B-Factory, especially into the High Energy Ring (HER) has some challenges. A high background level in the BaBar detector has for a while inhibited us from trickling charge into the HER similar to the Low Energy Ring (LER). Analyzing the injection system has revealed many issues which could be improved. The injection bump between two kickers was not closed, mainly because the phase advance wasn't exactly 180{sup o} and the two kicker strengths were not balan… more
Date: May 9, 2005
Creator: Decker, F. -J.; Donald, M. H.; Iverson, R. H.; Kulikov, A.; Pappas, G. C. & Weaver, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Low Mode Control of Cryogenic ICF Fuel Layers Using Infrared Heating

Description: Infrared heating has been demonstrated as an effective technique to smooth solid hydrogen layers inside transparent cryogenic inertial confinement fusion capsules. Control of the first two Legendre modes of the fuel thickness perturbations using two infrared beams injected into a hohlraum was predicted by modeling and experimentally demonstrated. In the current work, we use coupled ray tracing and heat transfer simulations to explore a wider range of control of long scale length asymmetries. We… more
Date: July 6, 2005
Creator: London, R. A.; Kozioziemski, B. J.; Marinak, M. M.; Kerbel, G. D. & Bittner, D. N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The Passive Film on Alloy 22

Description: This report describes oxide (passive film) formation on Alloy 22 surfaces when aged in air (25-750 C) and in solutions (90-110 C) over times ranging from days to 5 years. Most zero-valent metals (and their alloys) are thermodynamically unstable on the earth's surface and in its upper crust. Most will therefore convert to oxides when exposed to a surficial or underground environment. Despite the presence of thermodynamic driving forces, metals and their alloys may persist over lengthy timescales… more
Date: September 9, 2005
Creator: Orme, C A
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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DESIGN AND USE OF A HIGH-ACCURACY NON-CONTACT ABSOLUTE THICKNESS MEASUREMENT MACHINE

Description: Many commercial metrology systems exist for making accurate surface form and roughness measurements of nominally planar parts. However, few metrology systems exist for making accurate absolute thickness measurements. At Lawrence Livermore National Laboratory there is an increasing need for absolute thickness measurements of mesoscale parts ranging in size from 1 mm to 25 mm in diameter and 2 {micro}m to 500 {micro}m thickness. The samples of interest in this case are nominally planar parts that… more
Date: July 27, 2005
Creator: Nederbragt, W.; Hibbard, R.; Kroll, J. & Kelly, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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THERMAL COOK-OFF EXPERIMENTS OF THE HMX BASED HIGH EXPLOSIVE LX-04 TO CHARACTERIZE VIOLENCE WITH VARYING CONFINEMENT

Description: Thermal cook-off experiments were carried out using LX-04 explosive (85% HMX and 15% Viton by weight) with different levels of confinement to characterize the effect of confinement on the reaction violence. These experiments involved heating a porous LX-04 sample in a stainless steel container with varying container end plate thickness and assembly bolt diameter to control overall confinement. As expected, detonation did not occur and reducing the overall confinement lowered the reaction violen… more
Date: July 25, 2005
Creator: Garcia, F; Vandersall, K S; Forbes, J W; Tarver, C M & Greenwood, D
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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MICRON-SCALE DEEP HOLE DRILLING FOR BERYLLIUM CAPSULE FILL APPLICATIONS

Description: A laser processing system has been developed to drill high aspect ratio holes through the impermeable beryllium capsules envisioned for ignition shots on NIF. The drilling system was designed to produce holes with an entrance and exit diameter of approximately 5 {micro}m through the full 175 {micro}m thickness of the capsule. To meet these requirements, a frequency doubled femtosecond-class Ti:Sapphire laser is directed through a high numerical aperture lens to provide the spot geometry needed … more
Date: November 29, 2005
Creator: Armstrong, J P; Rubenchik, A M; Gunther, J & Stuart, B C
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Residual Oxygen on Nb Heated to 500 C

Description: The superconducting accelerating cavities for the International Linear Collider will be constructed of high-residual resistivity ratio (RRR) niobium sheet. Excessive oxygen within the skin depth (several microns) will reduce the RRR and increase resistive losses. We measure the thickness of this oxide layer, following bakeout simulation, to be about 0.5 nm thick. The results suggest that this layer will very slowly disappear from the top five nm at 500 C.
Date: June 10, 2005
Creator: Kirby, R.; King, F. K. & Padamsee, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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TASK TECHNICAL AND QUALITY ASSURANCE PLAN FOR THE CHARACTERIZATION AND LEACHING OF A THERMOWELL AND CONDUCTIVITY PROBE PIPE SAMPLE FROM TANK 48H

Description: A key component for the accelerated implementation and operation of the Salt Waste Processing Facility (SWPF) is the recovery of Tank 48H. Tank 48H is a type IIIA tank with a maximum capacity of 1.3 million gallons. The material on the Tank 48H internal tank surfaces is estimated to have a total volume of approximately 115 gallons consisting of mostly water soluble solids with approximately 20 wt% insoluble solids (33 Kg TPB). This film is assumed to be readily removable. The material on the in… more
Date: November 2, 2005
Creator: Fondeur, F
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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