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Controllable enhanced dragging of light in ultradispersive media
Article discussing research on the controllable enhanced dragging of light in ultradispersive media.
Date:
July 5, 2012
Creator:
Rostovtsev, Yuri V. & Davuluri, Sankar
System:
The UNT Digital Library
Charge transfer equilibria in ambient-exposed epitaxial graphene on (0001) 6 H-SiC
Article discussing research on charge transfer equilibria in ambient-exposed epitaxial graphene on (0001) 6 H-SiC.
Date:
June 5, 2012
Creator:
Sidorov, Anton N.; Gaskill, D. Kurt.; Buongiorno Nardelli, Marco; Tedesco, Joseph L.; Myers-Ward, Rachel L.; Eddy, Charles R. et al.
System:
The UNT Digital Library
Networking of psychophysics, psychology, and neurophysiology
Article discussing the dynamic networking and dynamic networks in complex research on psychophysics, psychology, and neurophysiology.
Date:
November 5, 2012
Creator:
West, Bruce J. & Grigolini, Paolo
System:
The UNT Digital Library
Change Management Project award submission
None
Date:
December 5, 2012
Creator:
Teslich, R
System:
The UNT Digital Library
The suppression of magnetism and the development of superconductivity within the collapsed tetragonal phase of Ca0.67Sr0.33Fe2As2 at high pressure
None
Date:
March 5, 2012
Creator:
Jeffries, J R; Butch, N P; Kirshenbaum, K; Saha, S R; Weir, S T; Vohra, Y K et al.
System:
The UNT Digital Library
A Multigrid-in-Time Algorithm for Solving Evolution Equations in Parallel
None
Date:
December 5, 2012
Creator:
Friedhoff, S; Falgout, R D; Kolev, T V; MacLachlan, S & Schroder, J B
System:
The UNT Digital Library
Re-architecting TEIMS Web-based Legacy Applications Using the Model View Controller Paradigm
None
Date:
September 5, 2012
Creator:
Barbosa, E & Laguna, G W
System:
The UNT Digital Library
Ab-initio calculation of optical properties of wurtzitic In_x Ga_1x N and In_x Al_1x N alloys including excitonic effects
None
Date:
September 5, 2012
Creator:
de Carvalho, L C; Schleife, A; Furthmueller, J & Bechstedt, F
System:
The UNT Digital Library
Electron Transport Studies of Annular Exploders
None
Date:
November 5, 2012
Creator:
Strozzi, D. J.; Tabak, M.; Shay, H. D. & Larson, D. J.
System:
The UNT Digital Library
Towards Recovering Provenance with Experiment Explorer
None
Date:
October 5, 2012
Creator:
Davis, D. B.; Asuncion, H. U.; Abdulla, G. M. & Carr, C. W.
System:
The UNT Digital Library
Compressing Phasor Measurement Data
None
Date:
December 5, 2012
Creator:
Top, P. & Breneman, J.
System:
The UNT Digital Library
The Injection System of the INFN-SuperB Factory Project: Preliminary Design
The ultra high luminosity B-factory (SuperB) project of INFN requires a high performance and reliable injection system, providing electrons at 4 GeV and positrons at 7 GeV, to fulfil the very tight requirements of the collider. Due to the short beam lifetime, continuous injection of electron and positron bunches in both LER and HER rings is necessary to maintain an high average luminosity. Polarized electrons are required for experiments and must be delivered by the injection system, due to the beam lifetime shorter than the ring polarization build-up: they will be produced by means of a SLAC-SLC polarized gun. The emittance and the energy spread of the e{sup -}/e{sup +} beams are reduced in a 1 GeV Damping Ring (DR) before injection in the main rings. Two schemes for positron production are under study, one with e{sup -}/e{sup +} conversion at low energy (< 1 Gev) and one with conversion at 6 GeV and a recirculation line to bring the positrons back to the DR. Acceleration through the Linac is provided by a 2856 MHz RF system made of travelling wave (TW), room temperature accelerating structures.
Date:
July 5, 2012
Creator:
Boni, Roberto; Guiducci, Susanna; Preger, Miro; Raimondi, Pantaleo; Chance, Antoine; Dadoun, Olivier et al.
System:
The UNT Digital Library
Advances in X-Band TW Accelerator Structures Operating in the 100 MV/M Regime
A CERN-SLAC-KEK collaboration on high gradient X-band accelerator structure development for CLIC has been ongoing for three years. The major outcome has been the demonstration of stable 100 MV/m gradient operation of a number of CLIC prototype structures. These structures were fabricated using the technology developed from 1994 to 2004 for the GLC/NLC linear collider initiative. One of the goals has been to refine the essential parameters and fabrication procedures needed to realize such a high gradient routinely. Another goal has been to develop structures with stronger dipole mode damping than those for GLC/NLC. The latter requires that the surface temperature rise during the pulse be higher, which may increase the breakdown rate. One structure with heavy damping has been RF processed and another is nearly finished. The breakdown rates of these structures were found to be higher by two orders of magnitude compared to those with equivalent acceleration mode parameters but without the damping features. This paper presents these results together with some of the earlier results from non-damped structures.
Date:
July 5, 2012
Creator:
Higo, Toshiyasu; Higashi, Yasuo; Matsumoto, Shuji; Yokoyama, Kazue; Adolphsen, Chris; Dolgashev, Valery et al.
System:
The UNT Digital Library
Analysis of Deformation Twinning in Tantalum Single Crystals Under Shock Loading Conditions
None
Date:
December 5, 2012
Creator:
Florando, J. N.; Barton, N. R.; El-Dasher, B.; McNaney, J. M. & Kumar, M.
System:
The UNT Digital Library
Focused-ion-beam Assisted Growth, Patterning, and Narrowing the Size Sidtributions of ZnO Nanowires for Variable Optical Properties and Enhanced Non-mechanical Energy Conversion
None
Date:
November 5, 2012
Creator:
Wang, X. Y.; Xie, S. F.; Liu, J.; Kucheyev, S. O. & Wang, Y. M.
System:
The UNT Digital Library
Dynamic structure factor in warm dense beryllium
None
Date:
April 5, 2012
Creator:
Glenzer, S H; Fortmann, C; Doeppner, T; Plagemann, K U; Sperling, P; Thiele, R et al.
System:
The UNT Digital Library
The United States Support Program and IAEA Safeguards
N/A
Date:
October 5, 2012
Creator:
E., Pepper S.
System:
The UNT Digital Library
Beyond DVFS: A First Look at Performance Under a Hardware-Enforced Power Bound
None
Date:
March 5, 2012
Creator:
Rountree, B. R.; Ahn, D. H.; de Supinski, B. R.; Lowenthal, D. K. & Schulz, M.
System:
The UNT Digital Library
High-Average Power Facilities
There has been significant progress in the development of high-power facilities in recent years yet major challenges remain. The task of WG4 was to identify which facilities were capable of addressing the outstanding R&D issues presently preventing high-power operation. To this end, information from each of the facilities represented at the workshop was tabulated and the results are presented herein. A brief description of the major challenges is given, but the detailed elaboration can be found in the other three working group summaries.
Date:
September 5, 2012
Creator:
Dowell, David H. & Power, John G.
System:
The UNT Digital Library
Post-growth annealing to improve the performance of CdZnTe detectors
N/A
Date:
June 5, 2012
Creator:
G., Yang
System:
The UNT Digital Library
A Hierarchical Approach for Load Balancing on Parallel Multi-core Systems
None
Date:
March 5, 2012
Creator:
Pilla, L L; Ribeiro, C P; Cordeiro, D; Mei, C; Bhatele, A; Navaux, P A et al.
System:
The UNT Digital Library
RAPID METHOD FOR DETERMINATION OF {sup 228}Ra IN WATER SAMPLES
A new rapid method for the determination of {sup 228}Ra in natural water samples has been developed at the SRNL/EBL (Savannah River National Lab/ Environmental Bioassay Laboratory) that can be used for emergency response or routine samples. While gamma spectrometry can be employed with sufficient detection limits to determine {sup 228}Ra in solid samples (via {sup 228}Ac) , radiochemical methods that employ gas flow proportional counting techniques typically provide lower MDA (Minimal Detectable Activity) levels for the determination of {sup 228}Ra in water samples. Most radiochemical methods for {sup 228}Ra collect and purify {sup 228}Ra and allow for {sup 228}Ac daughter ingrowth for ~36 hours. In this new SRNL/EBL approach, {sup 228}Ac is collected and purified from the water sample without waiting to eliminate this delay. The sample preparation requires only about 4 hours so that {sup 228}Ra assay results on water samples can be achieved in < 6 hours. The method uses a rapid calcium carbonate precipitation enhanced with a small amount of phosphate added to enhance chemical yields (typically >90%), followed by rapid cation exchange removal of calcium. Lead, bismuth, uranium, thorium and protactinium isotopes are also removed by the cation exchange separation. {sup 228}Ac is eluted from …
Date:
September 5, 2012
Creator:
Maxwell, S.
System:
The UNT Digital Library
Source fabrication and lifetime for Li+ ion beams extracted from alumino-silicate sources
A space-charge-limited beam with current densities (J) exceeding 1 mA/cm{sup 2} have been measured from lithium alumino-silicate ion sources at a temperature of #24;~1275#14;{degrees} C. At higher extraction voltages, the source appears to become emission limited with J #21;{>=} 1.5 mA/cm{sup 2}, and J increases weakly with the applied voltage. A 6.35 mm diameter source with an alumino-silicate coating, {<=}#20;0.25 mm thick, has a measured lifetime of ~#24;40 hours at ~#24;1275#14;{degrees} C, when pulsed at 0.05 Hz and with pulse length of #24;~6 &#956;s each. At this rate, the source lifetime was independent of the actual beam charge extracted due to the loss of neutral atoms at high temperature. The source lifetime increases with the amount of alumino-silicate coated on the emitting surface, and may also be further extended if the temperature is reduced between pulses.
Date:
March 5, 2012
Creator:
Roy, Prabir K.; Greenway, Wayne G. & Kwan, Joe W
System:
The UNT Digital Library
Recent RHIC In-Situ Coating Technology Developments
N/A
Date:
June 5, 2012
Creator:
Hershcovitch, A.; Blaskiewicz, M.; Brennan, J. M.; Chawla, A.; Custer, A.; Erickson, M. et al.
System:
The UNT Digital Library