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0.351 micron Laser Beam propagation in High-temperature Plasmas
A study of the laser-plasma interaction processes have been performed in plasmas that are created to emulate the plasma conditions in indirect drive inertial confinement fusion targets. The plasma emulator is produced in a gas-filled hohlraum; a blue 351-nm laser beam propagates along the axis of the hohlraum interacting with a high-temperature (T{sub e} = 3.5 keV), dense (n{sub e} = 5 x 10{sup 20}cm{sup -3}), long-scale length (L {approx} 2 mm) plasma. Experiments at these conditions have demonstrated that the interaction beam produces less than 1% total backscatter resulting in transmission greater than 90% for laser intensities less than I < 2 x 10{sup 15} W-cm{sup -2}. The bulk plasma conditions have been independently characterized using Thomson scattering where the peak electron temperatures are shown to scale with the hohlraum heater beam energy in the range from 2 keV to 3.5 keV. This feature has allowed us to determine the thresholds for both backscattering and filamentation instabilities; the former measured with absolutely calibrated full aperture backscatter and near backscatter diagnostics and the latter with a transmitted beam diagnostics. A plasma length scaling is also investigated extending our measurements to 4-mm long high-temperature plasmas. At intensities I < 5 x …
Date:
December 10, 2007
Creator:
Froula, D.; Divol, L.; Meezan, N.; Ross, J.; Berger, R. L.; Michel, P. et al.
Object Type:
Report
System:
The UNT Digital Library
900-24 Mock Tensile Tests
None
Date:
December 10, 2007
Creator:
Cunningham, B J & Gagliardi, F J
Object Type:
Report
System:
The UNT Digital Library
2008 Brookhaven National Laboratory Annual Illness and Injury Surveillance Report
The U.S. Department of Energy’s (DOE) commitment to assuring the health and safety of its workers includes the conduct of epidemiologic surveillance activities that provide an early warning system for health problems among workers. The Illness and Injury Surveillance Program monitors illnesses and health conditions that result in an absence of workdays, occupational injuries and illnesses, and disabilities and deaths among current workers.
Date:
December 10, 2009
Creator:
United States. Department of Energy. Office of Illness and Injury Prevention Programs.
Object Type:
Report
System:
The UNT Digital Library
2009 Tax Filing Season: IRS Met Many 2009 Goals, but Telephone Access Remained Low, and Taxpayer Service and Enforcement Could Be Improved
A letter report issued by the Government Accountability Office with an abstract that begins "The Internal Revenue Service's (IRS) filing season is an enormous undertaking that includes processing tax returns, issuing refunds, and responding to taxpayer questions. IRS's efforts to ensure compliance begin during the filing season. GAO was asked to assess IRS's 2009 filing season performance, identify ways to reduce taxpayers' use of short-term, high-interest refund anticipation loans (RAL) offered by paid preparers or banks, and identify ways to enhance compliance during processing. GAO analyzed IRS performance data, reviewed IRS operations, interviewed IRS officials, and reviewed its compliance programs and relevant statutes."
Date:
December 10, 2009
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
81891 - A New Class of Solvents for TRU Dissolution and Separation: Ionic Liquids
Through the current EMSP funding, solvent extraction technologies based on liquid-liquid partitioning of TRU to an Ionic Liquid phase containing conventional complexants has been shown to be viable. The growing understanding of the role that the different components of an ionic liquid can have on the partitioning mechanism, and on the nature of the subsequent dissolved species indicates strongly that ionic liquids are not necessarily direct replacements for volatile or otherwise hazardous organic solvents. Separations and partitioning can be exceptionally complex with competing solvent extraction, cation, anion and sacrificial ion exchange mechanisms are all important, depending on the selection of components for formation of the ionic liquid phase, and that control of these competing mechanisms can be utilized to provide new, alternative separations schemes.
Date:
December 10, 2004
Creator:
Rogers, Robin D.
Object Type:
Report
System:
The UNT Digital Library
Abandoned Mine Waste Working Group report
The Mine Waste Working Group discussed the nature and possible contributions to the solution of this class of waste problem at length. There was a consensus that the mine waste problem presented some fundamental differences from the other classes of waste addresses by the Develop On-Site Innovative Technologies (DOIT) working groups. Contents of this report are: executive summary; stakeholders address the problems; the mine waste program; current technology development programs; problems and issues that need to be addressed; demonstration projects to test solutions; conclusion-next steps; and appendices.
Date:
December 10, 1993
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Absolute Calibration of Image Plate for electrons at energy between 100 keV and 4 MeV
The authors measured the absolute response of image plate (Fuji BAS SR2040) for electrons at energies between 100 keV to 4 MeV using an electron spectrometer. The electron source was produced from a short pulse laser irradiated on the solid density targets. This paper presents the calibration results of image plate Photon Stimulated Luminescence PSL per electrons at this energy range. The Monte Carlo radiation transport code MCNPX results are also presented for three representative incident angles onto the image plates and corresponding electron energies depositions at these angles. These provide a complete set of tools that allows extraction of the absolute calibration to other spectrometer setting at this electron energy range.
Date:
December 10, 2007
Creator:
Chen, H; Back, N L; Eder, D C; Ping, Y; Song, P M & Throop, A
Object Type:
Article
System:
The UNT Digital Library
Achieving high sustained performance in an unstructured mesh CFD application
This paper highlights a three-year project by an interdisciplinary team on a legacy F77 computational fluid dynamics code, with the aim of demonstrating that implicit unstructured grid simulations can execute at rates not far from those of explicit structured grid codes, provided attention is paid to data motion complexity and the reuse of data positioned at the levels of the memory hierarchy closest to the processor, in addition to traditional operation count complexity. The demonstration code is from NASA and the enabling parallel hardware and (freely available) software toolkit are from DOE, but the resulting methodology should be broadly applicable, and the hardware limitations exposed should allow programmers and vendors of parallel platforms to focus with greater encouragement on sparse codes with indirect addressing. This snapshot of ongoing work shows a performance of 15 microseconds per degree of freedom to steady-state convergence of Euler flow on a mesh with 2.8 million vertices using 3072 dual-processor nodes of ASCI Red, corresponding to a sustained floating-point rate of 0.227 Tflop/s.
Date:
December 10, 1999
Creator:
Keyes, D E; Anderson, W K; Gropp, W D; Kaushik, D K & Smith, B F
Object Type:
Article
System:
The UNT Digital Library
ADVANCED WAVEFORM SIMULATION FOR SEISMIC MONITORING EVENTS
We conduct a detailed test of a recently developed technique, CAPloc, in recovering source parameters from a few stations against results from a large broadband network. The method uses a library of 1D Green’s functions which are broken into segments and matched to waveform observations with adjustable timing shifts. These shifts can be established by calibration against a distribution of well-located earthquake and assembled in tomographic images for predicting various phase-delays. Synthetics generated from 2D cross-sections through these models indicates that 1D synthetic waveforms are sufficient in modeling but simply shifted in time for hard-rock sites. This simplification allows the source inversion for both mechanism and location to be easily obtained by grid search. We test one-station mechanisms for 160 events against the array for both PAS and GSC which have data since 1960. While one station solutions work well (about 90%), joint solutions produce more reliable and defensible results. Inverting for both mechanism and location also works well except for certain difficult paths that cross deep basins or propagate along mountain ridges.
Date:
December 10, 2007
Creator:
Helmberger, Donald V.; Tromp, Jeroen & Rodgers, Arthur J.
Object Type:
Report
System:
The UNT Digital Library
Afghanistan: Narcotics and U.S. Policy
This report provides current statistical information, profiles the Afghanistan narcotics trade's participants, explores linkages between narcotics, insecurity, and corruption, and reviews U.S. and international policy responses since late 2001. The report also considers ongoing policy debates regarding the counternarcotics role of coalition military forces, poppy eradication, alternative livelihoods, and funding issues for Congress.
Date:
December 10, 2006
Creator:
Blanchard, Christopher M.
Object Type:
Report
System:
The UNT Digital Library
Air-Compressor for Water-Elevators.
Patent for "an improvement in air-compressors for water-elevators, and it consists in the novel mechanism for compressing air, by which water is designed to be raised from a cistern, or other reservoir." (Lines 13-17) Includes instructions and illustrations.
Date:
December 10, 1895
Creator:
Warren, Governor D.
Object Type:
Patent
System:
The Portal to Texas History
Air Force Depot Maintenance: Analysis of Its Financial Operations
A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on the financial operations of the Air Force depot maintenance activity group, focusing on the: (1) Air Force depot maintenance activity group's price increase between fiscal year (FY) 1994 and FY 1999 and the primary reasons for it; (2) activity group's financial losses during FY 1994 through FY 1998 and the primary reasons for them; and (3) Air Force's methods for recovering these losses."
Date:
December 10, 1999
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
ALS superbend magnet performance
The Lawrence Berkeley National Laboratory has been engaged in the design, construction and testing of four superconducting dipoles (Superbends) that are installed in three arcs of the Advanced Light Source (ALS), with the fourth magnet as a spare. This represents a major upgrade to the ALS providing an enhanced flux and brightness at photon energies above 10 keV. In preparation for installation, an extensive set of tests and measurements have been conducted to characterize the magnetic and cryogenic performance of the Superbends and to fiducialize them for accurate placement in the ALS storage ring. The magnets are currently installed, and the storage ring is undergoing final commissioning. This paper will present the results of magnetic and cryogenic testing.
Date:
December 10, 2001
Creator:
Marks, Steve; Zbasnik, John; Byrne, Warren; Calais, Dennis; Chin, Michael; DeMarco, Richard et al.
Object Type:
Article
System:
The UNT Digital Library
Altitude-Wind-Tunnel Investigation of a 3000-Pound-Thrust Axial-Flow Turbojet Engine, 7, Pressure and Temperature Distributions
Temperature and pressure distributions for an original and modified 3000 pound thrust axial flow turbojet engine were investigated. Data are included for a range of simulated altitudes from 5000 to 45000 feet, Mach numbers from 0.24 to 1.08, and corrected engine speeds from 10,550 to 13,359 rpm.
Date:
December 10, 1948
Creator:
Saari, Martin J. & Prince, William R.
Object Type:
Report
System:
The UNT Digital Library
Analysis of the Department of Energy's Clinch River Breeder Reactor cost estimate
Much of the current congressional debate about the Clinch River Breeder Reactor (CRBR) centers around the estimated cost of designing, constructing, and operating it for a 5-year demonstration period. The Department of Energy (DOE) recently linked the revenue-generating potential of the CRBR beyond the demonstration period to the justification for continued funding. GAO presents information that points out many uncertainties in DOE's estimates of revenue and cost. GAO believes that because these estimates are based on numerous assumptions and calculations concerning events as far as 37 years in the future, they should be viewed with caution. Changes in the underlying assumptions could produce wide variance in the cost estimates. Further, GAO points out that CRBR is a research and development project and that judging its merits solely on cost and revenue estimates projected far into the future may not be appropriate.
Date:
December 10, 1982
Creator:
Bowsher, C.A.
Object Type:
Report
System:
The UNT Digital Library
Anti-Terrorist/Anti-Money Laundering Information-Sharing by Financial Institutions under FINCEN's Regulations
This report discusses Information-sharing programs developed by Treasury's Financial Crimes Enforcement Network (FINCEN) designed to aid law enforcement investigation and prosecution of money laundering and terrorist financing.
Date:
December 10, 2014
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Anticircumvention under the Digital Millennium Copyright Act and Reverse Engineering: Recent Legal Developments
Defines the Digital Millennium Copyright Act (DMCA) and practice of reverse engineering. The report is categorized into five categories, (I) Background, (II) Exceptions to the copyright monopoly: reverse engineering, (lll) Lexmark International v. Static Control Components, Inc, (lV) Chamberlain Group, Inc. v. Skylink Technologies, Inc, and (V) Conclusion
Date:
December 10, 2004
Creator:
Jeweler, Robin
Object Type:
Report
System:
The UNT Digital Library
Apparatus for Separating and Cleaning Hulls and Trash from Seed Cotton.
Patent for a machine for separating and cleaning hulls and trash from seed cotton. It is intended to be used in conjunction with a boll threshing machine.
Date:
December 10, 1918
Creator:
Cass, Thomas M.
Object Type:
Patent
System:
The Portal to Texas History
Appropriations for FY2000: Foreign Operations, Export Financing, and Related Programs
Appropriations are one part of a complex federal budget process that includes budget resolutions, appropriations (regular, supplemental, and continuing) bills, rescissions, and budget reconciliation bills. This report is a guide to one of the 13 regular appropriations bills that Congress passes each year. It is designed to supplement the information provided by the House and Senate Foreign Operations Appropriations Subcommittees.
Date:
December 10, 1999
Creator:
Nowels, Larry
Object Type:
Report
System:
The UNT Digital Library
Appropriations for FY2005: Energy and Water Development
This report is a guide to the Energy and Water Development appropriations bill, including the funding for civil works projects of the Army Corps of Engineers (Corps), the Department of the Interior's Bureau of Reclamation (BOR), most of the Department of Energy (DOE), and a number of independent agencies.
Date:
December 10, 2004
Creator:
Behrens, Carl
Object Type:
Report
System:
The UNT Digital Library
ARAC system
In spite of the remarkable safety record of the nuclear industry as a whole, recent public concern over the potential impact of the industry's accelerated growth has prompted ERDA to expand its emergency response procedures. The Atmospheric Release Advisory Capability, ARAC, is a computer communications system designed to enhance the existing emergency response capability of ERDA nuclear facilities. ARAC will add at least two new functions to this capability: centralized, real-time data acquisition and storage, and simulation of the long range atmospheric transport of hazardous materials. To perform these functions, ARAC employs four major sub-systems or facilities: the site facility, the central facility, the global weather center and the regional model. The system has been under development for the past two years at the Lawrence Livermore Laboratory of the University of California. (auth)
Date:
December 10, 1975
Creator:
Kelly, M.F. & Wyman, R.H.
Object Type:
Article
System:
The UNT Digital Library
Argonne National Laboratory, Laboratory Directed Research and Development FY 1992 program activities. Annual report
None
Date:
December 10, 1992
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Armenia, Azerbaijan, and Georgia: Political Developments and Implications for U.S. Interests
The United States recognized the independence of all the former Soviet republics by the end of 1991, including the South Caucasus states of Armenia, Azerbaijan, and Georgia. The United States has fostered these states' ties with the West in part to end the dependence of these states on Russia for trade, security, and other relations. The FREEDOM Support Act of 1992 provides authorization for assistance to the Eurasian states for humanitarian needs, democratization, and other purposes. In the aftermath of the September 11, 2001, terrorist attacks on the United States, the Administration appealed for a national security waiver of the prohibition on aid to Azerbaijan, in consideration of Azerbaijan's assistance to the international coalition to combat terrorism. Azerbaijani and Georgian troops participate in stabilization efforts in Afghanistan and Iraq, and Armenian personnel serve in Iraq.
Date:
December 10, 2004
Creator:
Nichol, Jim
Object Type:
Report
System:
The UNT Digital Library
Assessment of Aging of Cork and TISAF Materials in the SAFKEG 3940A Package in KAMS
This report provides an assessment of the potential for aging and degradation of the resin-bonded cork and the Thermal-Insulating, Shock-Absorbing Foam materials that are components of the SAFKEG 3940A package. This package may be used for interim storage of plutonium materials in the Savannah River Site K-Area Materials Storage.
Date:
December 10, 2003
Creator:
Vormelker, P.R.
Object Type:
Report
System:
The UNT Digital Library