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A 2D fluid model of the DC planar magnetron cathode

Description: This model finds the plasma density distribution, n(x,y), and the positive electrical potential, {phi}{sub {infinity}}, between the surface of a planar magnetron cathode and a distant, uniform plasma. The intended application is for parameter studies of gas discharges in the range of 1--100 mTorr, which are often used as sputtering sources. The primary results are formulas which show how the spatial variation of the magnetic field, B(x,y), shapes the plasma density and influences the potential,… more
Date: October 3, 1995
Creator: Garcia, M.
Item Type: Refine your search to only Report
open access

3DIVS: 3-Dimensional Immersive Virtual Sculpting

Description: Virtual Environments (VEs) have the potential to revolutionize traditional product design by enabling the transition from conventional CAD to fully digital product development. The presented prototype system targets closing the ''digital gap'' as introduced by the need for physical models such as clay models or mockups in the traditional product design and evaluation cycle. We describe a design environment that provides an intuitive human-machine interface for the creation and manipulation of t… more
Date: October 3, 2001
Creator: Kuester, F; Duchaineau, M A; Hamann, B; Joy, K I & Uva, A E
Item Type: Refine your search to only Article
open access

6th international conference on biophysics and synchrotron radiation. Program/Abstracts

Description: This STI product consists of the Program/Abstracts book that was prepared for the participants in the Sixth International Conference on Biophysics and Synchrotron Radiation that was held August 4-8, 1998, at the Advanced Photon Source, Argonne National Laboratory. This book contains the full conference program and abstracts of the scientific presentations.
Date: August 3, 1999
Creator: Pittroff, Connie & Strasser, Susan Barr
Item Type: Refine your search to only Article
open access

6th International Conference on Biophysics & Synchrotron Radiation. Final report

Description: The 6th International Conference on Biophysics and Synchrotron Rdiation was held at the Advanced Photon Source, Argonne National Laboratory, from August 4-8, 1998, with pre-conference activities on August 3. Over 300 attendees and 65 presenters participated in the conference that was collaboratively hosted by the University of Chicago, Center for Advanced Radiation Sources and the Advanced Photon Source.
Date: August 3, 1999
Creator: Moffat, Keith
Item Type: Refine your search to only Report
open access

Ab initio no core calculations of light nuclei and preludes to Hamiltonian quantum field theory

Description: Recent advances in ab initio quantum many-body methods and growth in computer power now enable highly precise calculations of nuclear structure. The precision has attained a level sufficient to make clear statements on the nature of 3-body forces in nuclear physics. Total binding energies, spin-dependent structure effects, and electroweak properties of light nuclei play major roles in pinpointing properties of the underlying strong interaction. Eventually,we anticipate a theory bridge with imme… more
Date: August 3, 2009
Creator: Vary, J. P.; Maris, P.; Shirokov, A. M.; Honkanen, H.; li, J.; Brodsky, S. J. et al.
Item Type: Refine your search to only Article
open access

Ablation Front Rayleigh-Taylor Growth Experiments in Spherically Convergent Geometry

Description: Experiments were performed on the Nova laser, using indirectly driven capsules mounted in cylindrical gold hohlraums, to measure the Rayleigh-Taylor growth at the ablation front by time-resolved radiography. Modulations were preformed on the surface of Ge-doped plastic capsules. With initial modulations of 4 {micro}m, growth factors of about 6 in optical depth were seen, in agreement with simulations using the radiation hydrocode FCI2. With initial modulations of 1 {micro}m, growth factors of a… more
Date: November 3, 1999
Creator: Glendinning, S. G.; Cherfils, C.; Colvin, J.; Divol, L.; Galmiche, D.; Haan, S. et al.
Item Type: Refine your search to only Article
open access

Abort Gap Cleaning in RHIC

Description: During the RHIC Au-run in 2001 the 200 MHz storage cavity system was used for the first time. The rebucketing procedure caused significant beam debunching in addition to amplifying debunching due to other mechanisms. At the end of a four hour store, debunched beam could account for approximately 30%-40% of the total beam intensity. Some of it will be in the abort gap. In order to minimize the risk of magnet quenching due to uncontrolled beam losses at the time of a beam dump, a combination of a… more
Date: June 3, 2002
Creator: Drees, A.; Ahrens, L.; Fliller, R., III; Gassner, D.; McIntyre, G. T.; Michnoff, R. et al.
Item Type: Refine your search to only Article
open access

Abortion: Legislative Response

Description: The primary focus of this issue brief is legislative action in the 108th Congress with respect to abortion. However, discussion of those legislative proposals necessarily involves a brief discussion of the leading U.S. Supreme Court decisions concerning a woman’s right to choose whether to terminate her pregnancy. For a more detailed discussion of the relevant case law, see CRS Report 95-724, Abortion Law Development: A Brief Overview.
Date: October 3, 2003
Creator: Lewis, Karen J.; Shimabukuro, Jon O. & Ely, Dana
Item Type: Refine your search to only Report
open access

Absolute and Relative Surrogate Measurements of the 236U(n,f) Cross Section as a Probe for Angular Momentum Effects

Description: Using both the absolute and relative surrogate techniques, the {sup 236}U(n,f) cross section was deduced over an equivalent neutron energy range of 0 to 20 MeV. A 42 MeV {sup 3}He beam from the 88-Inch Cyclotron at Lawrence Berkeley National Laboratory was used to perform a ({sup 3}He,{alpha}) pickup reaction on targets of {sup 235}U (J{sup {pi}}=7/2{sup -}) and {sup 238}U (J{sup {pi}}=0{sup +}) and the fission decay probabilities were determined. The {sup 235}U({sup 3}He,{alpha}f) and {sup 238… more
Date: April 3, 2007
Creator: Lyles, B; Bernstein, L; Burke, J; Escher, J; Thompson, I; Dietrich, F et al.
Item Type: Refine your search to only Article
open access

Absorbed XFEL Dose in the Components of the LCLS X-Ray Optics

Description: There is great concern that the short, intense XFEL pulse of the LCLS will damage the optics that will be placed into the beam. We have analyzed the extent of the problem by considering the anticipated materials and position of the optical components in the beam path, calculated the absorbed dose as a function of photon energy, and compared these doses with the expected doses required (i) to observe rapid degradation due to thermal fatigue, (ii) to reach the melting temperature, or (iii) to act… more
Date: December 3, 2010
Creator: Hau-Riege, Stefan
Item Type: Refine your search to only Report
open access

Absorption and emission properties of photonic crystals and metamaterials

Description: We study the emission and absorption properties of photonic crystals and metamaterials using Comsol Multiphysics and Ansoft HFSS as simulation tools. We calculate the emission properties of metallic designs using drude model and the results illustrate that an appropriate termination of the surface of the metallic structure can significantly increase the absorption and therefore the thermal emissivity. We investigate the spontaneous emission rate modifications that occur for emitters inside two-… more
Date: August 3, 2007
Creator: Peng, Lili
Item Type: Refine your search to only Thesis or Dissertation
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Absorption of carbon dioxide in waste tanks

Description: Air flow rates and carbon dioxide concentrations of air entering and exiting eight H-Area waste tanks were monitored for a period of one year. The average instanteous concentration of carbon dioxide in air is within the range reported offsite, and therefore is not affect by operation of the coal-fired power plant adjacent to the tank farm. Waste solutions in each of the tanks were observed to be continuously absorbing carbon dioxide. The rate of absorption of carbon dioxide decreased linearly w… more
Date: September 3, 1987
Creator: Hobbs, D. T.
Item Type: Refine your search to only Report
open access

THE ABSORPTION OF HYDROGEN ON LOW PRESSURE HYDRIDE MATERIALS

Description: For this study, hydrogen getter materials (Zircaloy-4 and pure zirconium) that have a high affinity for hydrogen (and low overpressure) have been investigated to determine the hydrogen equilibrium pressure on Zircaloy-4 and pure zirconium. These materials, as with most getter materials, offered significant challenges to overcome given the low hydrogen equilibrium pressure for the temperature range of interest. Hydrogen-zirconium data exists for pure zirconium at 500 C and the corresponding hydr… more
Date: April 3, 2012
Creator: Morgan, G. & Korinko, P.
Item Type: Refine your search to only Article
open access

Abstinence Education: Efforts to Assess the Accuracy and Effectiveness of Federally Funded Programs

Description: A letter report issued by the Government Accountability Office with an abstract that begins "Reducing the incidence of sexually transmitted diseases and unintended pregnancies is one objective of the Department of Health and Human Services (HHS). HHS provides funding to states and organizations that provide abstinence-until-marriage education as one approach to address this objective. GAO was asked to describe the oversight of federally funded abstinence-until-marriage education programs. GAO i… more
Date: October 3, 2006
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Report
open access

ACA: A Brief Overview of the Law, Implementation, and Legal Challenges

Description: This report summarizes the Affordable Care Act (ACA) and the legal challenges it has faced. The report contains information on various lawsuits due to the ACA and provides the reasoning behind them as Congress violating its enumerated powers in the constitution. Moreover, the report covers the challenges of implementing the law.
Date: July 3, 2012
Creator: Redhead, C. Stephen; Chaikind, Hinda; Fernandez, Bernadette & Staman, Jennifer
Item Type: Refine your search to only Report
open access

Accelerated/abbreviated test methods, Study 4 of Task 3 (encapsulation) of the Low-Cost Silicon Solar Array Project. Eighth quarterly progress report, January--March 1978

Description: To meet the goals of the LSSA program, solar cell encapsulants must provide protection for 20 years. Consequently, the objective of the present program is to develop methodology for making confident predictions of encapsulant performance at any exposure site in the U.S.A. During the first year of the program, inherent weatherability was studied. Inherent weatherability is controlled by the three weather factors common to all exposure sites: insolation, temperature, and humidity. Emphasis was fo… more
Date: April 3, 1978
Creator: Kolyer, J. M.
Item Type: Refine your search to only Report
open access

Accelerated/abbreviated test methods, Study 4 of Task 3 (encapsulation) of the Low-Cost Silicon Solar Array Project. Seventh quarterly progress report, October--December 1977

Description: Successful predictions for the rate of loss of properties on outdoor exposure were made for plastic films based upon accelerated data. Degradation data for samples exposed beginning in winter, summer, or fall are discussed. The electrical performance of solar cells in Universal Test Specimens exposed outdoors is also reported. (MHR)
Date: January 3, 1978
Creator: Kolyer, J. M. & Mann, N. R.
Item Type: Refine your search to only Report
open access

Accelerated thermal recovery for flash-lamp-pumped solid-state laser amplifiers final report for 97-ERD-133

Description: We have developed a cost-effective method for accelerating the thermal wavefront recovery and shot rate of large, flashlamp-pumped, Nd:glass, Brewster-angle slab lasers of the type used for studying inertial confinement fusion (ICF) and laser-plasma interactions. This method removes waste pump heat by flowing slightly-chilled, turbulent gas over the flashlamps and blastshields after each shot, with the cooled blastshields serving as heat sinks for radiatively extracting residual heat deposited … more
Date: September 3, 1999
Creator: Erlandson, A. C.; London, R.; Manes, K.; Marshall, C.; Petty, C.; Pierce, R. et al.
Item Type: Refine your search to only Report
open access

Accelerated Vehicle Retirement for Fuel Economy: "Cash for Clunkers"

Description: This report outlines the key provisions of the Consumer Assistance to Recycle and Save (CARS) program established by P.L. 111-32, which provide rebates to prospective purchasers toward the purchase of new, fuel-efficient vehicles, provided the trade-in vehicles are scrapped. It discusses the impact of the program on the economy and also summarizes similar programs in other industrial countries.
Date: March 3, 2010
Creator: Yacobucci, Brent D. & Canis, Bill
Item Type: Refine your search to only Report
open access

Acceleration of high-pressure-ratio single-spool turbojet engine as determined from component performance characteristics 2: effect of compressor interstage air bleed

Description: Report presenting an analytical investigation to determine the effect of compressor interstage air bleed with the use of constant-area bleed ports on the acceleration characteristics of a typical high-pressure-ratio single-spool turbojet engine. Constant-area interstage bleed, properly located, gave smaller acceleration times than variable-area compressor exit bleed. Results regarding acceleration with interstage bleed, acceleration using constant-area interstage bleed in combination with compr… more
Date: July 3, 1953
Creator: Rebeske, John J., Jr. & Dugan, James F., Jr.
Item Type: Refine your search to only Report
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