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How an antenna launches its input power into radiation: thepattern of the Poynting vector at and near an antenna

Description: In this paper I first address the question of whether theseat of the power radiated by an antenna made of conducting members isdistributed over the "arms" of the antenna according to $ - \bf J \cdotE$, where $\bf J$ is the specified current density and $\bf E$ is theelectric field produced by that source. Poynting's theorem permits only aglobal identification of the total input power, usually from a localizedgenerator, with the total power radiated to infinity, not a localcorrespondence of $- \… more
Date: May 18, 2005
Creator: Jackson, J.D.
Partner: UNT Libraries Government Documents Department
open access

Progress and Lessons Learned in Transuranic Waste Disposition at The Department of Energy's Advanced Mixed Waste Treatment Project

Description: This paper provides an overview of the Department of Energy's (DOE) Advanced Mixed Waste Treatment Project (AMWTP) located at the Idaho National Laboratory (INL) and operated by Bechtel BWXT Idaho, LLC(BBWI) It describes the results to date in meeting the 6,000-cubic-meter Idaho Settlement Agreement milestone that was due December 31, 2005. The paper further describes lessons that have been learned from the project in the area of transuranic (TRU) waste processing and waste certification. Infor… more
Date: May 18, 2006
Creator: Mousseau, J. D.; Raish, S. C. & Russo, F. M.
Partner: UNT Libraries Government Documents Department
open access

Compatibility of the Radiating Divertor with High Performance Plasmas in DIII-D

Description: A radiating divertor approach was successfully applied to high performance 'hybrid' plasmas [M.R. Wade, et al., Proc. 20th IAEA Fusion Energy Conf., Vilamoura, (2004)]. Our technique included: (1) injecting argon near the outer divertor target, (2) enhancing the plasma flow into the inner and outer divertors by a combination of particle pumping and deuterium gas puffing upstream of the divertor targets, and (3) isolating the inner divertor from the outer by a structure in the private flux regio… more
Date: May 18, 2006
Creator: Petrie, T. W.; Wade, M. R.; Brooks, N. H.; Fenstermacher, M. E.; Groth, M.; Hyatt, A. W. et al.
Partner: UNT Libraries Government Documents Department
open access

Blanket maintenance by remote means using the cassette blanket approach

Description: Induced radioactivity in the blanket and other parts of a fusion reactor close to the plasma zone will dictate remote assembly, disassembly, and maintenance procedures. Time will be of the essence in these procedures. They must be practicable and certain. This paper discusses the reduction of a complicated Tokamak reactor to a simpler assembly via the use of a vacuum building in which to house the reactor and the introduction in this new model of cassette blanket modules. The cassettes signific… more
Date: May 18, 1978
Creator: Werner, R.W.
Partner: UNT Libraries Government Documents Department
open access

Shock wave effects and metallurgical parameters

Description: This review summarizes results from some principal investigations of shock-strain effects in metals. The strain contribution indeed plays a role in residual microstructures, particularly, if the strain becomes dominant as in ''under trapped'' experiments of low or moderate pressure or for that matter, of ''well trapped'' high pressure experiments. Not only does this strain contribution affect the microstructure by increasing deformation, a concommitant strain heat is generated and absorbed by t… more
Date: May 18, 1987
Creator: Staudhammer, K.P.
Partner: UNT Libraries Government Documents Department
open access

Molecular potentials and relaxation dynamics

Description: The use of empirical pseudopotentials, in evaluating interatomic potentials, provides an inexpensive and convenient method for obtaining highly accurate potential curves and permits the modeling of core-valence correlation, and the inclusion of relativistic effects when these are significant. Recent calculations of the X/sup 1/..sigma../sup +/ and a/sup 3/..sigma../sup +/ states of LiH, NaH, KH, RbH, and CsH and the X/sup 2/..sigma../sup +/ states of their anions are discussed. Pseudopotentials… more
Date: May 18, 1981
Creator: Karo, A.M.
Partner: UNT Libraries Government Documents Department
open access

Plasma crowbars in cylindrical flux compression experiments

Description: We have done a series of one- and two-dimensional calculations of hard-core Z-pinch flux compression experiments in order to study the effect of a plasma on these systems. These calculations show that including a plasma can reduce the amount of flux lost during the compression. Flux losses to the outer wall of such experiments can be greatly reduced by a plasma conducting sheath which forms along the wall. This conducting sheath consists of a cold, dense high ..beta.., unmagnetized plasma which… more
Date: May 18, 1979
Creator: Suter, L.J.
Partner: UNT Libraries Government Documents Department
open access

Technology development for recirculating heavy-ion accelerators

Description: The {open_quotes}recirculator,{close_quotes} a recirculating heavy-ion accelerator has been identified as a promising approach for an inertial fusion driver. System studies have been conducted to evaluate the recirculator on the basis of feasibility and cost. The recirculator has been shown to have significant cost advantages over other potential driver schemes, but some of the performance requirements exceed the capabilities of present technology. The system studies identified the high leverag… more
Date: May 18, 1993
Creator: Newton, M. A. & Kirbie, H. C.
Partner: UNT Libraries Government Documents Department
open access

Army Solid State Laser Program: Design, Operation, and Mission Analysis for a Heat-Capacity Laser

Description: Solid-state lasers have held great promise for the generation of high-average-power, high-quality output beams for a number of decades. However, the inherent difficulty of scaling the active solid-state gain media while continuing to provide efficient cooling has limited demonstrated powers to <5kW. Even at the maximum demonstrated average powers, the output is most often delivered as continuous wave (CW) or as small energy pulses at high pulse repetition frequency (PRF) and the beam diverge… more
Date: May 18, 2001
Creator: Dane, C. B.; Flath, L.; Rotter, M.; Fochs, S.; Brase, J. & Bretney, K.
Partner: UNT Libraries Government Documents Department
open access

A study of extraterrestrial antineutrino sources with the KamLAND detector

Description: We present the results of a search for extraterrestrial electron antineutrinos ({bar {nu}}{sub e}'s) in the energy range 8.3 MeV < E{sub {bar {nu}}}{sub e} < 30.8 MeV using the KamLAND detector. In an exposure of 4.53 kton-year, we identify 25 candidate events. All of the candidate events can be attributed to background, most importantly neutral current atmospheric neutrino interactions, setting an upper limit on the probability of {sup 8}B solar {nu}{sub e}'s converting into {bar {nu}}{s… more
Date: May 18, 2011
Creator: Collaboration, The KamLAND; Gando, A.; Gando, Y.; Ichimura, K.; Ikeda, H.; Inoue, K. et al.
Partner: UNT Libraries Government Documents Department
open access

Focusing lenses for the 20-beam fusion laser, SHIVA

Description: The focus lens design for the 20-beam SHIVA laser fusion facility involves considerations of uniform and normal pellet illumination. The resulting requirements dictate tailored beam intensity profiles and vacuum-loaded thin lenses.
Date: May 18, 1976
Creator: O'Neal, W. C.
Partner: UNT Libraries Government Documents Department
open access

Rydberg series in the lanthanides and actinides observed by stepwise laser excitation

Description: The techniques of stepwise laser excitation were applied to obtain Ryberg series in the lanthanides and in uranium. The methods employed circumvent many of the experimental difficulties inherent in conventional absorption spectrosopy of these heavy atoms with very complex spectra. The Rydberg series observed have allowed the determination of accurate ionization limits. The values in eV are: Ce, 5.5387(4);Nd, 5.5250(6); Sm, 5.6437(10); Eu, 5.6704(3); Gd, 6.1502(6); Tb, 5.8639(6); Dy, 5.9390(6); … more
Date: May 18, 1977
Creator: Worden, E. F.; Solarz, R. W.; Paisner, J. A.; Rajnak, K.; Shore, B. W. & Conway, J. G.
Partner: UNT Libraries Government Documents Department
open access

Advances in full field microscopy with table-top soft x-ray lasers

Description: We describe recent advances in the demonstration of table-top full field microscopes that use soft x-ray lasers for illumination. We have achieved wavelength resolution and single shot exposure operation with a very compact 46.9 nm microscope based on a desk-top size capillary discharge laser. This {lambda}-46.9 nm microscope has been used to capture full field images of a variety of nanostructure systems and surfaces. In a separate development we have demonstrated a zone plate microscope that … more
Date: May 18, 2009
Creator: Menoni, C. S.; Brizuela, F.; Wang, Y.; Brewer, C. A.; Luther, B. M.; Pedaci, F. et al.
Partner: UNT Libraries Government Documents Department
open access

An Experiment to Locate the Site of TeV Flaring in M87

Description: We describe a Chandra X-ray target-of-opportunity project designed to isolate the site of TeV flaring in the radio galaxy M87. To date, we have triggered the Chandra observations only once (2010 April) and by the time of the first of our nine observations, the TeV flare had ended. However, we found that the X-ray intensity of the unresolved nucleus was at an elevated level for our first observation. Of the more than 60 Chandra observations we have made of the M87 jet covering nine years, the nu… more
Date: May 18, 2012
Creator: Harris, D. E.; Massaro, F.; Cheung, C. C.; Horns, D.; Raue, M.; Stawarz, L. et al.
Partner: UNT Libraries Government Documents Department
open access

Residential Electricity Demand in China -- Can Efficiency Reverse the Growth?

Description: The time when energy-related carbon emissions come overwhelmingly from developed countries is coming to a close. China has already overtaken the United States as the world's leading emitter of greenhouse gas emissions. The economic growth that China has experienced is not expected to slow down significantly in the long term, which implies continued massive growth in energy demand. This paper draws on the extensive expertise from the China Energy Group at LBNL on forecasting energy consumption i… more
Date: May 18, 2009
Creator: Letschert, Virginie; McNeil, Michael A. & Zhou, Nan
Partner: UNT Libraries Government Documents Department
open access

Status of the Super-B factory Design

Description: The SuperB international team continues to optimize the design of an electron-positron collider, which will allow the enhanced study of the origins of flavor physics. The project combines the best features of a linear collider (high single-collision luminosity) and a storage-ring collider (high repetition rate), bringing together all accelerator physics aspects to make a very high luminosity of 10{sup 36} cm{sup -2} sec{sup -1}. This asymmetric-energy collider with a polarized electron beam wil… more
Date: May 18, 2012
Creator: Wittmer, W.; U., /Michigan State; Bertsche, K.; Chao, A.; Novokhatski, A.; Nosochkov, Y. et al.
Partner: UNT Libraries Government Documents Department
open access

DimaSense™: A Novel Nucleic Acid Detection System

Description: Recently, we developed a suite of methods for the rational design and fabrication of well-defined nanoparticle architectures, including clusters using bio-encoded nanoscale building blocks and layer-by-layer stepwise assembly on a solid support. In particular, the Nano-Assembly platform using Encoded Solid Supports (NAESS) allows for controlled interactions, purification of side products, modularity of design, and the construction of complex nanoparticle architectures. This approach offers seve… more
Date: May 18, 2011
Creator: Stadler, A.
Partner: UNT Libraries Government Documents Department
open access

STREAM II-V5: REVISION OF STREAM II-V4 AQUEOUS TRANSPORT CODE TO ACCOUNT FOR THE EFFECTS OF RAINFALL EVENTS

Description: STREAM II is an aqueous transport model developed by the Savannah River National Laboratory (SRNL) for use in the Savannah River Site (SRS) emergency response program. The transport model of the Water Quality Analysis Simulation Program (WASP) is used by STREAM II to perform contaminant transport calculations. WASP5 is a US Environmental Protection Agency (EPA) water quality analysis program that simulates contaminant transport and fate through surface water. A recent version of the code (STREA… more
Date: May 18, 2011
Creator: Chen, K.
Partner: UNT Libraries Government Documents Department
open access

Synchrotron Light Options at Super-B

Description: No Description Available.
Date: May 18, 2012
Creator: Wittmer, Walter; Nosochkov, Yuri; Novokhatski, Alexander; Seeman, John; Sullivan, Michael; Biagini, Maria Enrica et al.
Partner: UNT Libraries Government Documents Department
open access

Charm and Charmonium Spectroscopy at B-factories

Description: Since a few years, charm and charmonium spectroscopy has revived, both from experimental and theoretical point of views. Many new states have been discovered triggering numerous theoretical publications. The B-factories with their large enriched charm sample have played a leading role on the experimental side with the observation and study of most of the new states. Other experiments such as CLEO and CDF have also contributed. Classical hadron spectroscopy predicted some of these new states, bu… more
Date: May 18, 2007
Creator: Grenier, Philippe & /SLAC /Ecole Normale Superieure, CNRS
Partner: UNT Libraries Government Documents Department
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