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Solid-State Heat-Capacity-Laser Review

Description: We describe our recent progress in the area of solid-state heat-capacity-lasers (SSHCL). In particular, we examine the physics of heat-capacity operation of a solid state laser and give the present technology status of our 10 kW flashlamp-pumped laser The current status of work leading to a diode-pumped Nd:GGG HCL is also described.
Date: May 7, 2002
Creator: Rotter, M D & Dane, C B
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Strong Earthquake Motion Estimates for Three Sites on the U.C. San Diego Campus

Description: The approach of the Campus Earthquake Program (CEP) is to combine the substantial expertise that exists within the UC system in geology, seismology, and geotechnical engineering, to estimate the earthquake strong motion exposure of UC facilities. These estimates draw upon recent advances in hazard assessment, seismic wave propagation modeling in rocks and soils, and dynamic soil testing. The UC campuses currently chosen for application of our integrated methodology are Riverside, San Diego, and… more
Date: May 7, 2002
Creator: Day, S.; Doroudian, M.; Elgamal, A.; Gonzales, S.; Heuze, F.; Lai, T. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Summer Workshop: Molecular Basis, Physiology and Diversity of Microbial Adaptation

Description: This summer workshop successfully exposed beginning graduate students, research technicians from industry, and other scientists to modern concepts and experimental protocols in an area that both DOE and NSF perceived to be lacking in U.S. science. 70 students participated in this workshop over 5 summers. Each summer, 12-16 students spent 2-4 weeks at The Ohio State University covering four distinct modules through lectures, laboratory sessions, and interaction with internationally recognized em… more
Date: May 7, 2002
Creator: Tabita, F. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Recent Progress on the Standardized DOE Spent Nuclear Fuel Canister

Description: The Department of Energy (DOE) has developed a set of containers for the handling, interim storage, transportation, and disposal in the national repository of DOE spent nuclear fuel (SNF). This container design, referred to as the standardized DOE SNF canister or standardized canister, was developed by the Department's National Spent Nuclear Fuel Storage Program (NSNFP) working in conjunction with the Office of Civilian Radioactive Waste Management (OCRWM) and the DOE spent fuel sites. This can… more
Date: May 7, 2002
Creator: Morton, D.K.; Snow, S.D.; Rahl, T.E.; Hill, T.J. (INEEL) & Morissette, R.P. (Beckman and Associates, Inc.)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Free-boundary Full-pressure Island Healing in a Stellarator: Coil-healing

Description: The lack of axisymmetry in stellarators guarantees that in general magnetic islands and chaotic magnetic field lines will exist. As particle transport is strongly tied to the magnetic field lines, magnetic islands and chaotic field lines result in poor plasma confinement. For stellarators to be feasible candidates for fusion power stations it is essential that, to a good approximation, the magnetic field lines lie on nested flux-surfaces, and the suppression of magnetic islands is a critical is… more
Date: May 7, 2002
Creator: S.R.Hudson; Reiman, A.; Strickler, D.; Brooks, A.; Monticello, D.A. & Hirshman, and S.P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Nonlinear d--ta-f Simulation Studies of Intense Charged Particle Beams with Large Temperature Anisotropy

Description: In this paper, a 3-D nonlinear perturbative particle simulation code (BEST) [H. Qin, R.C. Davidson and W.W. Lee, Physical Review Special Topics on Accelerators and Beams 3 (2000) 084401] is used to systematically study the stability properties of intense nonneutral charged particle beams with large temperature anisotropy (T{sub {perpendicular}b} >> T{sub {parallel}b}). The most unstable modes are identified, and their eigen frequencies, radial mode structure, and nonlinear dynamics are de… more
Date: May 7, 2002
Creator: Startsev, Edward A.; Davidson, Ronald C. & Qin, Hong
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Dense ceramic membranes for hydrogen separation.

Description: We have developed cermet membranes that nongalvanically separate hydrogen from gas mixtures. The highest measured hydrogen flux was 20.0 cm{sup 3} (STP)/min-cm{sup 2} for an ANL-3a membrane at 900 C. For ANL-3 membranes with thickness of 40-500 {micro}m, hydrogen permeation is limited by the bulk diffusion of hydrogen through the metal phase. The effect of hydrogen partial pressure on permeation rate confirmed this conclusion, suggesting that higher permeation rates may be obtained by decreasin… more
Date: May 7, 2002
Creator: Balachandran, U.; Lee, T. H.; Wang, S.; Zhang, G. & Dorris, S. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Cactus and Visapult: A case study of ultra-high performance distributed visualization using connectionless protocols

Description: This past decade has seen rapid growth in the size, resolution, and complexity of Grand Challenge simulation codes. Many such problems still require interactive visualization tools to make sense of multi-terabyte data stores. Visapult is a parallel volume rendering tool that employs distributed components, latency tolerant algorithms, and high performance network I/O for effective remote visualization of massive datasets. In this paper we discuss using connectionless protocols to accelerate Vis… more
Date: May 7, 2002
Creator: Shalf, John & Bethel, E. Wes
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Observation of high energy atmospheric neutrinos with antarctic muon and neutrino detector array

Description: The Antarctic Muon and Neutrino Detector Array (AMANDA) began collecting data with ten strings in 1997. Results from the first year of operation are presented. Neutrinos coming through the Earth from the Northern Hemisphere are identified by secondary muons moving upward through the array. Cosmic rays in the atmosphere generate a background of downward moving muons, which are about 10{sup 6} times more abundant than the upward moving muons. Over 130 days of exposure, we observed a total of abou… more
Date: May 7, 2002
Creator: Ahrens, J.; Andres, E.; Bai, X.; Barouch, G.; Barwick, S. W.; Bay, R. C. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Updated ENDL99 Cross Sections for U(n.y) and U(n,f)

Description: In this note, we describe the first of two updates to the uranium isotopes in Livermore's Evaluated Neutron Data Library, ENDL99. Here, we concentrate on improving the (n, f) and (n, {gamma}) evaluations for a limited set of uranium isotopes. The first improvement consisted of creating an evaluation for {sup 232}U using a combination of fission and capture cross sections from the JENDL-3.2 database and the outgoing particle distributions from the exiting ENDL99 {sup 234}U evaluation. The second… more
Date: May 7, 2002
Creator: Brown, D.; Dietrich, F.; Hill, T. & McNabb, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Groundwater Quality Assessment Plan for Single-Shell Tank Waste Management Area B-BX-BY at the Hanford Site, Interim Change Notice 1

Description: This ICN updates the assessment plan to reflect the addition of wells newly installed in FY2001. Project scientists will provide a schedule change request identifying the wells as new and providing a list of constituents and sample frequencies to the sample scheduler.
Date: May 7, 2002
Creator: Narbutovskih, Susan M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Ultrasonic Testing of NIF Amplifier FAU Top Plates

Description: A key component in the National Ignition Facility (NIF) laser optic system is the amplifier frame assembly unit (FAU). The cast aluminum top plate that supports the FAU is required to withstand loads that would occur during an earthquake with a recurrence period of 1000 years. The stringent seismic requirements placed on the FAU top plate induced a study of the cast aluminum material used in the top plate. Ultrasonic testing was used to aid in characterizing the aluminum material used in the pl… more
Date: May 7, 2002
Creator: Chinn, D. J.; Huber, R. D.; Haskins, J. J.; Rodriguez, J. A.; Souza, P. R. & Le, T. V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hybrid Chirped Pulse Amplification

Description: We present a novel chirped pulse amplification method which combines optical parametric amplification and laser amplification. We have demonstrated this hybrid CPA concept with a combination of beta-barium borate and Ti:sapphire. High-efficiency, multi-terawatt compatible amplification is achieved without gain narrowing and without electro-optic modulators using a simple commercial pump laser.
Date: May 7, 2002
Creator: Jovanovic, I & Barty, C P J
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Ergonomics in the Workplace: Is It Time for an OSHA Standard?

Description: This report debates implementing an OSHA (Occupational Safety and Health Administration) standard for ergonomics. This standard would be motivated by the fact that one third of state employer's costs are related to improper ergonomic design causing illness. The report details that standards suggested in the past have been rejected by Congress.
Date: May 7, 2002
Creator: Rappaport, Edward
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Understanding of Neutral Gas Transport in the Alcator C-Mod Tokamak Divertor

Description: A series of experiments on the effect of divertor baffling on the Alcator C-Mod tokamak provides stringent tests on models of neutral gas transport in and around the divertor region. One attractive feature of these experiments is that a trial description of the background plasma can be constructed from experimental measurements using a simple model, allowing the neutral gas transport to be studied with a stand-alone code. The neutral-ion and neutral-neutral elastic scattering processes recently… more
Date: May 7, 2002
Creator: Stotler, D. P.; Pitcher, C. S.; Boswell, C. J.; LaBombard, B.; Terry, J. L.; Elder, J. D. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Cleanliness Validation of NIF Small Optics

Description: The National Ignition Facility will be the highest energy laser in the world when completed. Many small optics ({le} 14 inches in diameter) have stringent transport efficiency and some have very high laser fluence requirements. For optics to sustain high spectral efficiencies and survive high fluences for a 30-year operation, these optics have cleanliness requirements to assure optimal laser system performance. These optical components have insufficient surface areas to validate the particulate… more
Date: May 7, 2002
Creator: Chow, R.; Bickel, R.; Ertel, J.; Pryatel, J.; Loomis, G.; Stowers, I. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Energy Policy: Setting the Stage for the Current Debate

Description: The Bush Administration issued its plan for a national energy policy on May 16, 2001. The plan was controversial, characterized by some as leaner on conservation and renewables than Democratic proposals, and predisposed to trade off environmental considerations to increase supply. Comprehensive energy legislation was introduced in the Senate by both parties by late March (S. 388, S. 389, S. 596, S. 597). Bills reported by several House committees (H.R. 2436, H.R. 2460, H.R. 2511, and H.R. 2587)… more
Date: May 7, 2002
Creator: Bamberger, Robert L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Ergonomics in the Workplace: Is It Time for an OSHA Standard?

Description: Improper ergonomic design of jobs is one of the leading causes of work-related illness, accounting for perhaps a third of employers’ costs under state workers’ compensation laws. Due to the wide variety of circumstances, however, any comprehensive standard would probably have to be complex and costly, while scientific understanding of the problem is not complete.
Date: May 7, 2002
Creator: Rappaport, Edward B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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