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1-10 Mbar Laser-Driven Shocks Using the Janus Laser Facility
We report preliminary results using the Lawrence Livermore National Laboratory (LLNL) Janus laser facility to generate high pressure laser-driven shocks in the 1-10 Mbar regime. These experiments address various issues, including shock steadiness, planarity, uniformity and low target preheat, important for making precision EOS measurements on a small (E < 250 J) laser facility. A brief description of the experimental techniques, target design and measurements will be given.
Date:
August 10, 2001
Creator:
Dunn, J.; Price, D. F.; Moon, S. J.; Cauble, R. C.; Springer, P. T. & Ng, A.
Object Type:
Article
System:
The UNT Digital Library
A 3-year plan for beam science in the heavy-ion fusion virtual national laboratory
In December 1998, LBNL Director Charles Shank and LLNL Director Bruce Tarter signed a Memorandum of Agreement to create the Heavy-Ion Fusion Virtual National Laboratory (HIF-VNL) with the purpose of improving the efficiency and productivity of heavy ion research through coordination of the two laboratories' efforts under one technical director. In 1999, PPPL Director Robert Goldston signed the VNL MOA for PPPL's heavy-ion fusion group to join the VNL. LBNL and LLNL each contribute about 45% of the $10.6 M/yr trilab VNL effort, and PPPL contributes currently about 10% of the VNL effort. The three labs carry out collaborative experiments, theory and simulations of a variety of intense beam scientific issues described below. The tri-lab HIF VNL program is part of the DOE Office of Fusion Energy Sciences (OFES) fusion program. A short description of the four major tasks areas of HIF-VNL research is given in the next section. The task areas are: High Current Experiment, Final Focus/Chamber Transport, Source/Injector/Low Energy Beam Transport (LEBT), and Theory/Simulation. As a result of the internal review, more detailed reviews of the designs, costs and schedules for some of the tasks have been completed, which will provide more precision in the scheduled completion dates …
Date:
September 10, 2001
Creator:
Logan, B. Grant
Object Type:
Report
System:
The UNT Digital Library
2001 Gordon Research Conference on Archaea: [Ecology], Metabolism. Final progress report [agenda and attendee list]
The Gordon Research Conference on Archaea: Ecology, Metabolism [and Molecular Biology] was held at Proctor Academy, Andover, New Hampshire, August 5-10, 2001. The conference was attended by 135 participants. The attendees represented the spectrum of endeavor in this field, coming from academia, industry, and government laboratories, and included US and foreign scientists, senior researchers, young investigators, and students. Emphasis was placed on current unpublished research and discussion of the future target areas in this field. There was a conscious effort to stimulate discussion about the key issues in the field today. Session topics included the following: Ecology and genetic elements; Genomics and evolution; Ecology, genomes and gene regulation; Replication and recombination; Chromatin and transcription; Gene regulation; Post-transcription processing; Biochemistry and metabolism; Proteomics and protein structure; Metabolism and physiology. The featured speaker addressed the topic: ''Archaeal viruses, witnesses of prebiotic evolution?''
Date:
August 10, 2001
Creator:
Daniels, Charles
Object Type:
Report
System:
The UNT Digital Library
Activation of theMercury Laser System: A Diode-Pumped Solid-State Laser Driver for Inertial Fusion
Initial measurements are reported for the Mercury laser system, a scalable driver for rep-rated inertial fusion energy. The performance goals include 10% electrical efficiency at 10 Hz and 100 J with a 2-10 ns pulse length. We report on the first Yb:S-FAP crystals grown to sufficient size for fabricating full size (4 x 6 cm) amplifier slabs. The first of four 160 kW (peak power) diode arrays and pump delivery systems were completed and tested with the following results: 5.5% power droop over a 0.75 ms pulse, 3.95 nm spectral linewidth, far field divergence of 14.0 mrad and 149.5 mrad in the microlensed and unmicrolensed directions respectively, and 83% optical-to-optical transfer efficiency through the pump delivery system.
Date:
September 10, 2001
Creator:
Bayramian, A. J.; Beach, R. J.; Bibeau, C.; Ebbers, C. A.; Freitas, B. L.; Kanz, V. K. et al.
Object Type:
Article
System:
The UNT Digital Library
Advanced Three-Dimensional Deterministic and Monte Carlo Codes for Simulation of Real-Life Complex Nuclear Systems
None
Date:
January 10, 2001
Creator:
Haghighat, A.
Object Type:
Article
System:
The UNT Digital Library
Aggregation and metal ion extraction properties of novel, silicon-substituted alkylenediphosphonic acids.
In conjunction with efforts to develop novel actinide extractants exhibiting solubility in supercritical carbon dioxide, the effect of adding silicon-based functionalities to diphosphonic acids has been investigated. Specifically, a series of silyl-substituted diphosphonic acids has been prepared and characterized, and their aggregation and metal ion extraction properties compared with alkyl-substituted diphosphonic acids, reagents previously demonstrated to be effective extractants of actinides from acidic aqueous media into various organic solvents. In addition, the influence of the number of methylene groups bridging the phosphorus atoms of the diphosphonic acids on their extraction behavior has been investigated. Variations in the extraction behavior of the compounds arising from differences in the number of bridging methylene groups have been shown to be attributable to a combination of factors, in particular, the aggregation state of the ligand, the size of the chelate rings formed upon complexation, the basicity of the phosphoryl group and the relative acidities of the ligands.
Date:
May 10, 2001
Creator:
McAlister, D. R.; Dietz, M. L.; Chiarizia, R. & Herlinger, A. W.
Object Type:
Article
System:
The UNT Digital Library
Air Traffic Control: Role of FAA's Modernization Program in Reducing Delays and Congestion
Testimony issued by the General Accounting Office with an abstract that begins "This testimony discusses the Federal Aviation Administration's (FAA) efforts to modernize the nation's air traffic control (ATC) system and its relationship to other initiatives to address the escalating crises of insufficient capacity facing the aviation industry. Specifically, GAO reviews the (1) extent of the delay and congestion problems and the contribution of the ATC system to them, (2) progress and problems encountered in FAA's ATC modernization program, and (3) importance of a continued focus on delivering ATC equipment and on human capital issues as policymakers seek to address delays and congestion. GAO found that the national airspace system (NAS) is facing significant capacity problems. Last year, more than 25 percent of nationwide flights were canceled, delayed or diverted. These actions affected 163 million passengers who, on average, were delayed almost an hour. Inefficiencies in the ATC system contribute to the delays and congestion. Modernizing equipment, along with other changes in the ATC system, is expected to help increase the capacity of NAS between 5 and 15 percent. However, improvements from FAA's modernization program have fallen short so far. Although FAA has installed new equipment to provide the necessary …
Date:
May 10, 2001
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 125, No. 50, Ed. 1 Thursday, May 10, 2001
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
May 10, 2001
Creator:
Lucas, Melinda L.
Object Type:
Newspaper
System:
The Portal to Texas History
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
Alternative Motor Fuels and Vehicles: Impact on the Transportation Sector
Testimony issued by the General Accounting Office with an abstract that begins "The transportation sector accounts for roughly two thirds of the nation's petroleum consumption and one quarter of the total U.S. energy use. Several steps have been taken during the last 25 years either to reduce petroleum consumption or to increase fuel diversity in the transportation sector, including tax incentives, mandates for alternative fuel vehicles, and laws to promote automobile fuel efficiency. This testimony discusses the extent of alternative fuel vehicle acquisition and fuel use, some of the barriers inhibiting greater use of alternative fuels and vehicles, and the federal tax incentives used to promote the use of alternative motor fuels and vehicles. So far, alternative fuels and vehicles have not made much of a dent in the conventional fuel and vehicle dominance of the U.S. vehicle fleet, primarily because of fundamental economic obstacles, such as the relatively low price of oil, insufficient availability of alternative fuel refueling infrastructure, and the relatively high cost of some alternative fuel vehicles. As GAO reported in February 2000 (RCED-00-59), any significant increase in the use of alternative motor fuels and vehicles by the general public will depend on the following two factors: …
Date:
July 10, 2001
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 101, No. 258, Ed. 1 Wednesday, January 10, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 10, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 102, No. 23, Ed. 1 Tuesday, April 10, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 10, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 102, No. 49, Ed. 1 Thursday, May 10, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 10, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 102, No. 75, Ed. 1 Sunday, June 10, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
June 10, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 102, No. 101, Ed. 1 Tuesday, July 10, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
July 10, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 102, No. 138, Ed. 1 Friday, August 10, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 10, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 102, No. 164, Ed. 1 Monday, September 10, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 10, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 102, No. 190, Ed. 1 Wednesday, October 10, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 10, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 103, No. 242, Ed. 1 Monday, December 10, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 10, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Alvin Advertiser (Alvin, Tex.), Ed. 1 Wednesday, January 10, 2001
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
January 10, 2001
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Alvin Advertiser (Alvin, Tex.), Ed. 1 Wednesday, October 10, 2001
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
October 10, 2001
Creator:
Schwind, Jim & Holton, Kathleen
Object Type:
Newspaper
System:
The Portal to Texas History
Alvin Sun-Advertiser (Alvin, Tex.), Vol. 110, No. 47, Ed. 1 Sunday, June 10, 2001
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
June 10, 2001
Creator:
Schwind, Jim & Holton, Kathleen
Object Type:
Newspaper
System:
The Portal to Texas History
The Alvin Sun (Alvin, Tex.), Vol. 110, No. 74, Ed. 1 Monday, September 10, 2001
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
September 10, 2001
Creator:
Schwind, Jim & Holton, Kathleen
Object Type:
Newspaper
System:
The Portal to Texas History
The Alvin Sun (Alvin, Tex.), Vol. 110, No. 100, Ed. 1 Monday, December 10, 2001
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
December 10, 2001
Creator:
Schwind, Jim & Holton, Kathleen
Object Type:
Newspaper
System:
The Portal to Texas History