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Synthesis of Novel Extended Phases of Molecular Solids at High Pressures and Temperatures

Description: This study is for in-situ investigation of chemical bonding and molecular structure of low z-elements and simple molecular solids at high pressures and temperatures using 3rd-generation synchrotron x-ray diffraction. To understand the contribution of the empty d-electron orbital of Mg in relation to the formation of molecular solids like MgO, which is one of the important Earth lower mantle materials and MgB{sub 2}, which has recently been the focus of intense superconducting material research,… more
Date: March 30, 2004
Creator: Yoo, C; Evans, W & Cynn, H
Partner: UNT Libraries Government Documents Department
open access

Computation Directorate Annual Report 2003

Description: Big computers are icons: symbols of the culture, and of the larger computing infrastructure that exists at Lawrence Livermore. Through the collective effort of Laboratory personnel, they enable scientific discovery and engineering development on an unprecedented scale. For more than three decades, the Computation Directorate has supplied the big computers that enable the science necessary for Laboratory missions and programs. Livermore supercomputing is uniquely mission driven. The high-fidelit… more
Date: March 12, 2004
Creator: Crawford, D L; McGraw, J R; Ashby, S F; McCoy, M G; Michels, T C & Eltgroth, P G
Partner: UNT Libraries Government Documents Department
open access

Parris Island Wastewater Treatment Plant SCADA Upgrades Final Report

Description: Marine Corp Recruit Depot (MCRD), Parris Island, SC, home of the Easter Recruiting Region Marine Corp Boot Camp, found itself in a situation common to Department of Defense (DOD) facilities. It had to deal with several different types of installed energy-related control systems that could not talk to each other. This situation was being exacerbated by the installation of a new and/or unique type of control system for every new building being constructed or older facility that was being upgraded… more
Date: March 18, 2004
Creator: Meador, Richard J. & Hatley, Darrel D.
Partner: UNT Libraries Government Documents Department
open access

Non-Process Element (NPE) Removal Using Functionalized Monolayers on Mesoporous Supports

Description: As Kraft pulp mills move toward minimum impact manufacturing, one of the most difficult challenges is the development of strategies for dealing effectively with buildup, carryover, and recovery of cationic and anionic non-process elements (NPEs). Even at low concentrations, NPEs present a serious concern due to scaling and other reactions caused by Ca, Mg, Mn, Fe, Cu, phosphates, silicates, and aluminates. The drivers behind NPE removal include environmental regulatory issues (e.g., Mn), scale … more
Date: March 26, 2004
Creator: Leugemors, Robert K.; Fryxell, Glen E.; Mattigod, Shas V. & Persinger, W H.
Partner: UNT Libraries Government Documents Department
open access

PROPOSAL FOR A SILICON VERTEX TRACKER (VTX) FOR THE PHENIX EXPERIMENT.

Description: We propose the construction of a Silicon Vertex Tracker (VTX) for the PHENIX experiment at RHIC. The VTX will substantially enhance the physics capabilities of the PHENIX central arm spectrometers. Our prime motivation is to provide precision measurements of heavy-quark production (charm and beauty) in A+A, p(d)+A, and polarized p+p collisions. These are key measurements for the future RHIC program, both for the heavy ion program as it moves from the discovery phase towards detailed investigati… more
Date: March 30, 2004
Creator: AKIBA,Y.
Partner: UNT Libraries Government Documents Department
open access

A Contamination Vulnerability Assessment for the Sacramento Area Groundwater Basin

Description: In response to concerns expressed by the California Legislature and the citizenry of the State of California, the State Water Resources Control Board (SWRCB), implemented a program to assess groundwater quality, and provide a predictive capability for identifying areas that are vulnerable to contamination. The program was initiated in response to concern over public supply well closures due to contamination by chemicals such as MtBE from gasoline, and solvents from industrial operations. As a r… more
Date: March 10, 2004
Creator: Moran, J. E.; Hudson, G. B.; Eaton, G. F. & Leif, R.
Partner: UNT Libraries Government Documents Department
open access

133Ba as a gamma-ray surrogate source for 1kg HEU and 10g 239Pu and 252Cf as a Neutron Surrogate for Pu

Description: Monte Carlo was performed for the purpose of relating gamma-ray signal strength from 1kg of HEU and 10g of {sup 239}Pu (as described in the ASTM standards) to the radiation emitted from an amount of {sup 133}Ba. A determination was made on the amount of {sup 133}Ba that could act as a surrogate for the specified amounts of HEU and Pu. {sup 133}Ba is not the ideal source to use as a surrogate for HEU because of its higher energies. {sup 133}Ba was chosen as the surrogate since it has a half-life… more
Date: March 2004
Creator: Pohl, Bertram A. & Archer, Daniel E.
Partner: UNT Libraries Government Documents Department
open access

A White Paper Prepared for the OpenMP Architectural Review Board on DMPL: An OpenMP DLL Debugging Interface

Description: OpenMP is a widely adopted standard for threading directives across compiler implementations. The standard is very successful since it provides application writers with a simple, portable programming model for introducing shared memory parallelism into their codes. However, the standards do not address key issues for supporting that programming model in development tools such as debuggers. In this paper, we present DMPL, an OpenMP debugger interface that can be implemented as a dynamically load… more
Date: March 17, 2004
Creator: Cownie, James; DelSignore, John, Jr.; de Supinski, Bronis R. & Warren, Karen
Partner: UNT Libraries Government Documents Department
open access

Analytical Tests for Ray Effect Errors in Discrete Ordinate Methods for Solving the Neutron Transport Equation

Description: This paper contains three analytical solutions of transport problems which can be used to test ray-effect errors in the numerical solutions of the Boltzmann Transport Equation (BTE). We derived the first two solutions and the third was shown to us by M. Prasad. Since this paper is intended to be an internal LLNL report, no attempt was made to find the original derivations of the solutions in the literature in order to cite the authors for their work.
Date: March 22, 2004
Creator: Chang, B.
Partner: UNT Libraries Government Documents Department
open access

On the Use of 233U-236U Double-Spike for TIMS Measurements of Uranium Isotopes: A Simulation Study

Description: Synthetic ion beams with instantaneous and temporal characteristics appropriate to thermal ionization mass spectrometry (TIMS) were mathematically generated and analyzed to determine the effects of using a mixed {sup 233}U-{sup 236}U spike (double-spike) in the analysis of uranium isotopes. The instantaneous beam characteristics are the intensities (e.g., counts per second) modeled with a Poisson distribution plus a component of random noise that simulates the detection processes. Several beam … more
Date: March 17, 2004
Creator: Williams, R. W.
Partner: UNT Libraries Government Documents Department
open access

Process R&D for CIS-Based Thin-Film PV: Annual Technical Report, 24 April 2002--23 April 2003

Description: During this subcontract period, predictability of Shell Solar Industries's CIS process was demonstrated by continuously executing the process while increasing throughput. Cumulative production for 2002 exceeded 1 MW - about twice the production rate for 2001. Average laminate efficiency for 2002 is 10.8% with a full width of only 12% of the average. Dramatic increases in line yield were achieved from improved production protocols and by addressing disparate special causes for process variation.… more
Date: March 1, 2004
Creator: Tarrant, D. E. & Gay, R. R.
Partner: UNT Libraries Government Documents Department
open access

661L Pre Shot Report

Description: No Description Available.
Date: March 29, 2004
Creator: Bosson, S. T.
Partner: UNT Libraries Government Documents Department
open access

Laser Program Annual Report - 1979 Unclassified Excerpts

Description: The objective of the Lawrence Livermore National Laboratory (LLNL) Inertial Confinement Fusion (ICF) program is to demonstrate the scientific feasibility of ICF for military applications (to develop and utilize the capability to study nuclear weapons physics in support of the weapons program) and for energy-directed uses in the civilian sector. The demonstration of scientific feasibility for both military and civilian objectives will require achieving gains on the order of 10 to 100 in fusion m… more
Date: March 3, 2004
Creator: Lindl, J D
Partner: UNT Libraries Government Documents Department
open access

Stochastic Engine Final Report: Applying Markov Chain Monte Carlo Methods with Importance Sampling to Large-Scale Data-Driven Simulation

Description: Accurate prediction of complex phenomena can be greatly enhanced through the use of data and observations to update simulations. The ability to create these data-driven simulations is limited by error and uncertainty in both the data and the simulation. The stochastic engine project addressed this problem through the development and application of a family of Markov Chain Monte Carlo methods utilizing importance sampling driven by forward simulators to minimize time spent search very large stat… more
Date: March 11, 2004
Creator: Glaser, R. E.; Johannesson, G.; Sengupta, S.; Kosovic, B.; Carle, S.; Franz, G. A. et al.
Partner: UNT Libraries Government Documents Department
open access

PHYSICS AND SAFETY ANALYSIS FOR THE NIST RESEARCH REACTOR.

Description: Detailed reactor physics and safety analyses have been performed for the 20 MW D{sub 2}O moderated research reactor (NBSR) at the National Institute of Standards and Technology (NIST). The analyses provide an update to the Final Safety Analysis Report (FSAR) and employ state-of-the-art calculational methods. Three-dimensional Monte Carlo neutron and photon transport calculations were performed with the MCNP code to determine the safety parameters for the NBSR. The core depletion and determinati… more
Date: March 31, 2004
Creator: CHENG,L. HANSON,A. DIAMOND,D. XU,J. CAREW,J. RORER,D.
Partner: UNT Libraries Government Documents Department
open access

Studies of High-K Isomers at TRIUMF-ISAC

Description: No Description Available.
Date: March 4, 2004
Creator: Smith, M B; Walker, P M; Ball, G C; Carroll, J J; Garrett, P E; Hackman, G et al.
Partner: UNT Libraries Government Documents Department
open access

Development of New Low-Cost, High-Performance, PV Module Encapsulant/Packaging Materials: Annual Technical Progress Report, Phase 1, 22 October 2002-30 September 2003

Description: The primary objectives of this subcontract are for Specialized Technology Resources, Inc., to work with U.S.-based PV module manufacturers representing crystalline silicon, polycrystalline silicon, amorphous silicon, copper indium diselenide (CIS), and other state-of-the-art thin-film technologies to develop formulations, production processes, prototype and qualify new low-cost, high-performance photovoltaic module encapsulants/packaging materials. The manufacturers will assist in identifying e… more
Date: March 1, 2004
Creator: Agro, S. C. & Tucker, R. T.
Partner: UNT Libraries Government Documents Department
open access

ASSESSMENT OF RADIONUCLIDE RELEASE FROM CONTAMINATED CONCRETE AT THE YANKEE NUCLEAR POWER STATION.

Description: Yankee Atomic Energy Company (YAEC) is considering allowing portions of existing structures at the Yankee Nuclear Power Station (YNPS) to remain on site at the time of license termination. Accordingly, release of residual radioactive contaminants (i.e., H-3, C-14, Co-60, Ni-63, Sr-90, and Cs-137) from remaining subsurface concrete structures (Darman, 2004) and dose due to that release must be evaluated. Analyses were performed using DUST-MS to assess the rate of release for each radionuclide fr… more
Date: March 1, 2004
Creator: SULLIVAN, T.
Partner: UNT Libraries Government Documents Department
open access

CONCEPTS FOR CAPACITIVELY RF-SHIELDED BELLOWS IN CRYOGENIC STRUCTURES.

Description: Bellows are frequently required in accelerators and colliders. Usually RF-shields with spring fingers are employed to screen the bellows. The lack of accessibility in cryogenic systems can be a problem and asks for alternate solutions to eliminate possible overheating, sparking, etc that occurred in intensive beams. This note addresses an alternate kind of RF shield, which uses capacitive contact instead of mechanical contact. The analysis, as well as numerical example of a superconducting cavi… more
Date: March 24, 2004
Creator: ZHAO,Y. HAHN,H.
Partner: UNT Libraries Government Documents Department
open access

Model Action Plan for Nuclear Forensics and Nuclear Attribution

Description: Nuclear forensics and nuclear attribution have become increasingly important tools in the fight against illegal trafficking in nuclear and radiological materials. This technical report documents the field of nuclear forensics and nuclear attribution in a comprehensive manner, summarizing tools and procedures that have heretofore been described independently in the scientific literature. This report also provides national policy-makers, decision-makers, and technical managers with guidance for r… more
Date: March 1, 2004
Creator: Dudder, G B; Niemeyer, S; Smith, D K & Kristo, M J
Partner: UNT Libraries Government Documents Department
open access

Spills on Flat Inclined Pavements

Description: This report describes the general spill phenomenology for liquid spills occurring on relatively impermeable surfaces such as concrete or asphalt pavement and the development and application of a model to describe the time evolution of such spills. The discussion assumes evaporation and degradation are negligible and a homogeneous surface. In such an instance, the inherent interfacial properties determine the spatial extent of liquid spreading with the initial flow being controlled by the releas… more
Date: March 1, 2004
Creator: Simmons, Carver S.; Keller, Jason M. & Hylden, Jeff L.
Partner: UNT Libraries Government Documents Department
open access

Dielectrophoretic Forces on the Nanoscale

Description: We have developed a method of calculation of the dielectrophoretic force on a nanoparticle in a fluid environment where variations in the electric field and electric field gradients are on the same nanoscale as the particle. The Boundary Element Dielectrophoretic Force (BEDF) method involves constructing a solvent-accessible or molecular surface surrounding the particle, calculating the normal component of the electric field at the surface boundary elements and then solving a system of linear e… more
Date: March 30, 2004
Creator: Schaldach, C M; Bourcier, W L; Wilson, W D & Paul, P H
Partner: UNT Libraries Government Documents Department
open access

A Manufacturing Process for Precision Gold Support Rings for Laser Targets

Description: A research effort performed by the Target Fabrication Group has developed a method for producing precision, meso-scale gold support rings for laser targets. Many different laser targets consist of planar components that are built upon a gold support ring, such as the HyDiv and RadG targets shown in Figure 1. Because of the sequence in which laser targets such as these must be built to achieve the required overall precision, the washer-shaped support rings must fit precisely onto fixtures that a… more
Date: March 2, 2004
Creator: Hibbard, R L & Bono, M J
Partner: UNT Libraries Government Documents Department
open access

Technical Basis for the Derivation of Authorized Limits for Units of the Hanford Reach National Monument

Description: This report provides radiation dose modeling analysis supporting the technical derivation of the authorized limits for selected portions of the Hanford Reach National Monument (HRNM). The RESRAD (Yu et al. 2001) computer program was used as the calculational model. The goal of this effort was to produce authorized limits, in units of pCi/g in soil, for the HRNM that would result in radiation doses less than 25 mrem/y, in compliance with the requirements of the U.S. Department of Energy (DOE).
Date: March 15, 2004
Creator: Napier, Bruce A.; Kennedy, William E.; Ikenberry, Tracy A.; Hunacek, Mickey M. & Kennedy, Adam M.
Partner: UNT Libraries Government Documents Department
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