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open access

2w Laser Propagation and Raman Backscatter in Underdense Gas Bag Plasmas

Description: Recent 2{omega} gasbag experiments on the Helen laser studied single-beam propagation and backscatter as a function of gas density. We present a comprehensive analysis of these experiments using simulations in HYDRA. Post-processed results agree well with experimental fast x-ray images (FXI) showing stable laser propagation across the bag. The measured total stimulated Raman backscatter (SRS) increases with initial gas density up to n{sub e} {approx} 0.08 n{sub c}, then decreases. Near-backscat… more
Date: September 5, 2003
Creator: Meezan, N.; Divol, L.; Suter, L.; Miller, M.; Stevenson, R. M.; Slark, G. et al.
Item Type: Refine your search to only Article
open access

Actinic Mask Inspection at the ALS Initial Design Review

Description: This report is the first milestone report for the actinic mask blank inspection project conducted at the VNL, which forms sub-section 3 of the Q1 2003 mask blank technology transfer program at the VNL. Specifically this report addresses deliverable 3.1.1--design review and preliminary tool design. The goal of this project is to design an actinic mask inspection tool capable of operating in two modes: high-speed scanning for the detection of multilayer defects (inspection mode), and a high-resol… more
Date: March 5, 2003
Creator: Barty, A.; Chapman, H.; Sweeney, D.; Levesque, R.; Bokor, J.; Gullikson, E. et al.
Item Type: Refine your search to only Report
open access

Addressing Problems with Scene-Based Wave Front Sensing

Description: Scene-Based Wave Front Sensing uses the correlation between successive subimages to determine phase aberrations which blur digital images. Adaptive Optics technology uses deformable mirrors to correct for these phase aberrations and make the images clearer. The correlation between temporal subimages gives tip-tilt information. If these images do not have identical image content, tip-tilt estimations may be incorrect. Motion detection is necessary to help avoid errors initiated by dynamic subima… more
Date: August 5, 2003
Creator: Chan, C
Item Type: Refine your search to only Report
open access

Africa: U.S. Foreign Assistance Issues

Description: This report discusses the issue of U.S. economic assistance to sub-Saharan Africa, highlighting the importance of continued assistance in light of U.S. national security and also various U.S.-led efforts to promote reform amongst African citizens themselves. U.S. assistance finds its way to Africa through a variety of channels, including the USAID-administered DA program, food aid programs, and indirect aid provided through international financial institutions and the United Nations.
Date: September 5, 2003
Creator: Copson, Raymond W.
Item Type: Refine your search to only Report
open access

Airport Improvement Program

Description: This issue brief discusses the Airport Improvement Program and its complement, the Passenger Facility Charge (PFC). After a brief history of federal support for airport construction and improvement, the report describes AIP funding, its source of revenues, funding distribution, the types of projects the program funds, AIP and PFC policy issues, and the allowable use of AIP funds for airport security purposes.
Date: May 5, 2003
Creator: Kirk, Robert S.
Item Type: Refine your search to only Report
open access

All Fiber Technology for High-Energy Petawatt Front End Laser Systems

Description: We are developing an all fiber front end for the next generation high-energy petawatt (HEPW) laser at Lawrence Livermore National Laboratory (LLNL). The ultimate goal of the LLNL HEPW effort is to generate 5-kJ pulses capable of compression to 5ps at 1053nm, enabling advanced x-ray backlighters and possible demonstration of fast ignition. We discuss the front-end of the laser design from the fiber master oscillator, which generates the mode-locked 20nm bandwidth initial pulses through the 10mJ … more
Date: September 5, 2003
Creator: Dawson, J W; Liao, Z M; Jovanovic, I; Wattellier, B; Beach, R; Payne, S A et al.
Item Type: Refine your search to only Article
open access

ALS user meeting features 10th anniversary celebration

Description: The Advanced Light Source (ALS) saw first light on October 5, 1993, not quite to the day but close to 10 years before the 2003 ALS Users Association meeting, held October 6-8. Fittingly, the proceedings included retrospectives from two of the key players in the early history of the ALS, David Attwood and Jay Marx, and a display of photographs chronicling its construction and commissioning. Science highlights, highlights from young researchers, and posters constituted the meat of the program on … more
Date: December 5, 2003
Creator: Robinson, Art
Item Type: Refine your search to only Article
open access

Aperture studies for the AP2 anti-proton Line at Fermilab

Description: The AP2 beamline transports anti-protons from the production target to the Debuncher ring. For many years the observed aperture has been smaller than that estimated from linear, on-energy optics. We have investigated possible reasons for the aperture restriction and have identified several possible sources, including residual vertical dispersion from alignment errors and chromatic effects due to very large chromatic lattice functions. We discuss the possible sources, suggest some remedies, and … more
Date: December 5, 2003
Creator: Reichel, Ina; Zisman, Michael & Placidi, Massimo
Item Type: Refine your search to only Report
open access

Application of Reservoir Characterization and Advanced Technology to Improve Recovery and Economics in a Lower Quality Shallow Shelf San Andres Reservoir. Annual Report: August 3, 2000--August 2, 2001

Description: The OXY-operated Class 2 Project at West Welch is designed to demonstrate how the use of advanced technology can improve the economics of miscible CO{sub 2} injection projects in lower quality Shallow Shelf Carbonate reservoirs. The research and design phase (Budget Period 1) primarily involved advanced reservoir characterization. The current demonstration phase (Budget Period 2) is the implementation of the reservoir management plan for an optimum miscible CO{sub 2} flood design based on the r… more
Date: May 5, 2003
Creator: Beebe, Tom
Item Type: Refine your search to only Report
open access

Appropriations for FY2003: Foreign Operations, Export Financing and Related Programs

Description: 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 considers each year. It is designed to supplement the information provided by the House and Senate Foreign Operations Appropriations Subcommittees.
Date: May 5, 2003
Creator: Nowels, Larry
Item Type: Refine your search to only Report
open access

Appropriations for FY2003: Interior and Related Agencies

Description: Appropriations are one part of a complex federal budget process that includes budget resolutions, appropriations (regular, supplemental, consolidated, and continuing) bills, rescissions, and budget reconciliation bills. This report is a guide to one of the 13 regular appropriations bills that Congress considers each year. It is designed to supplement the information provided by the House and Senate Interior Appropriations Subcommittees.
Date: February 5, 2003
Creator: Hardy-Vincent, Carol & Boren, Susan
Item Type: Refine your search to only Report
open access

The Argentine Financial Crisis: A Chronology of Events

Description: Argentina’s current crisis resulted from a confluence of events, some external to Argentina’s policy process, others directly related to its political and economic choices. The following is a summary of these events from before Argentina’s adoption of the currency board in 1991 to developments in early 2002.
Date: June 5, 2003
Creator: Hornbeck, J. F. & Marshall, Meaghan K.
Item Type: Refine your search to only Report
open access

Assessment of Physical Properties of Transuranic Waste in Hanford Single-Shell Tanks

Description: CH2M HILL Hanford Group, Inc. (CH2M HILL) is in the process of identifying and developing supplemental process technologies to accelerate the tank waste cleanup mission. One technology targets disposal of Hanford transuranic (TRU) process wastes stored in single-shell tanks (SSTs). Ten Hanford SSTs are candidates for designation as contact-handled TRU waste type: the B-200 series tanks (241-B-201, -B-202, -B-203, and -B-204), the T-200 series tanks (241-T-201, -T-202, -T-203, and -T-204), and T… more
Date: March 5, 2003
Creator: Rassat, Scot D.; Mahoney, Lenna A.; Wells, Beric E.; Mendoza, Donaldo P. & Caldwell, Dustin D.
Item Type: Refine your search to only Report
open access

Assessment of Unabated Facility Emission Potentials for Evaluating Airborne Radionuclide Monitoring Requirements at Pacific Northwest National Laboratory - 2003

Description: Assessments were performed to evaluate compliance with the airborne radionuclide emission monitoring requirements in the National Emission Standards for Hazardous Air Pollutants (NESHAP - U.S. Code of Federal Regulations, Title 40, Part 61, Subpart H) and Washington Administrative Code (WAC) 246-247: Radiation Protection - Air Emissions. In these assessments, potential unabated offsite doses were evaluated for emission locations at facilities owned by the U.S. Department of Energy and operated … more
Date: December 5, 2003
Creator: Ballinger, Marcel Y.; Sula, Monte J.; Gervais, Todd L. & Edwards, Daniel L.
Item Type: Refine your search to only Report
open access

Association between severity of prescribed burns and subsequent activity of conifer-infesting beetles in stands of longleaf pine

Description: A randomized complete block experiment was performed to measure the effect of prescribed, dormant-season burns of three different levels of severity (measured as fuel consumption and soil surface heating) on subsequent insect infestation and mortality of mature longleaf pine (Pinus palustris Mill.). Multiple-funnel traps baited with a low release rate of turpentine and ethanol were used to monitor activity of certain coniferophagous beetles. Non-aggressive species, including the root beetles Hy… more
Date: May 5, 2003
Creator: Sullivan, Brian, T; Fettig, C. J.; Otrosina, William, J.; Dalusky, Mark, J. & Berrisford, C.W.
Item Type: Refine your search to only Article
open access

Association Health Plans, Health Marts and the Small Group Market for Health Insurance

Description: An estimated 41.2 million people were without health insurance in 2001. Legislation under consideration by the 108th and earlier Congresses is intended to assist small employers in offering health insurance as a benefit to their workers. A new bill, H.R. 4281, introduced on May 5, 2004, The Small Business Health Fairness Act of 2003 (H.R. 6601s. 545), and a number of bills from the earlier Congresses include provisions creating new groups for small firms to join or encouraging the growth of exi… more
Date: June 5, 2003
Creator: Hearne, Jean P.
Item Type: Refine your search to only Report
open access

Atomic resolution of lithium ions in LiCoO{sub 2}

Description: LiCoO{sub 2} is the most common lithium storage material used as positive electrode in lithium rechargeable batteries. Ordering of lithium and vacancies has a profound effect on the physical properties of Li{sub x}CoO{sub 2} and the electrochemical performances of lithium batteries. An exit surface wave (ESW) phase image reconstructed from experimental images obtained on the LBNL One-Angstrom Microscope (OAM) shows all three types of atoms in LiCoO{sub 2}.
Date: June 5, 2003
Creator: Shao-Horn, Yang; Croguennec, Laurence; Delmas, Claude; Nelson, E. Chris & O'Keefe, Michael A.
Item Type: Refine your search to only Article
open access

Aviation Security: Efforts to Measure Effectiveness and Address Challenges

Description: Testimony issued by the General Accounting Office with an abstract that begins "It has been 2 years since the attacks of September 11,2001, exposed vulnerabilities in the nation's aviation system. Since then, billions of dollars have been spent on a wide range of initiatives designed to enhance the security of commercial aviation. However, vulnerabilities in aviation security continue to exist. As a result, questions have been raised regarding the effectiveness of established initiatives in pro… more
Date: November 5, 2003
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Text
open access

Baselines and Scorekeeping in the Federal Budget Process

Description: Baselines and scorekeeping are an integral part of the federal budget process, providing Congress and the President with a framework for making and enforcing budgetary decisions. A baseline serves as a benchmark for federal budget decisions. While the Office of Management and Budget and the Congressional Budget Office create different baselines, their baselines project federal spending, revenue, and budget surplus or deficit amounts that would occur if existing budget policies were left unchang… more
Date: September 5, 2003
Creator: Heniff, Bill, Jr.
Item Type: Refine your search to only Report
open access

Broadband Internet Access: Background and Issues

Description: This is one part in the series of reports that provide a background and analysis, and most recent developments regarding broadband or high-speed Internet access. The report starts out by answering questions; what is broadband and why is it important? This report also discusses broadband technologies, the status of broadband deployment and the related policy issues, as well as the legislation in congress.
Date: May 5, 2003
Creator: Gilroy, Angele A. & Kruger, Lennard G.
Item Type: Refine your search to only Report
open access

CALIBRATION OF ONLINE ANALYZERS USING NEURAL NETWORKS

Description: Neural networks were used to calibrate an online ash analyzer at the Usibelli Coal Mine, Healy, Alaska, by relating the Americium and Cesium counts to the ash content. A total of 104 samples were collected from the mine, with 47 being from screened coal, and the rest being from unscreened coal. Each sample corresponded to 20 seconds of coal on the running conveyor belt. Neural network modeling used the quick stop training procedure. Therefore, the samples were split into training, calibration a… more
Date: December 5, 2003
Creator: Ganguli, Rajive; Walsh, Daniel E. & Yu, Shaohai
Item Type: Refine your search to only Report
open access

The CDF data handling system

Description: The Collider Detector at Fermilab (CDF) records proton-antiproton collisions at center of mass energy of 2.0 TeV at the Tevatron collider. A new collider run, Run II, of the Tevatron started in April 2001. Increased luminosity will result in about 1 PB of data recorded on tapes in the next two years. Currently the CDF experiment has about 260 TB of data stored on tapes. This amount includes raw and reconstructed data and their derivatives. The data storage and retrieval are managed by the CDF D… more
Date: November 5, 2003
Creator: Litvintsev, Dmitry O.
Item Type: Refine your search to only Article
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