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Limits on likesign dilepton production in nu/sub. mu. / interactions

Description: We have searched for the production of likesign dilepton events (nu/sub ..mu../ + Ne ..-->.. ..mu../sup -/ + e/sup -/ + ...) in a wideband neutrino beam at FNAL using the 15' bubble chamber. We observe no signal above the background arising from conventional sources. We set 90% confidence level upper limits for the production rates of (nu/sub ..mu../ + Ne ..-->.. ..mu../sup -/ + e/sup -/ + ...)/(nu/sub ..mu../ + Ne ..-->.. ..mu../sup -/ + ...) less than or equal to 8 * 10/sup -5/ and (nu/sub ..… more
Date: May 21, 1985
Creator: Baker, N. J.; Connolly, P. L.; Kahn, S. A.; Murtagh, M. J.; Palmer, R. B.; Samios, N. P. et al.
Partner: UNT Libraries Government Documents Department
open access

Surface treatment of lead glass microsphere

Description: The structural arrangement of a hydrated glass surface depends on the composition, thermal history and surface treatment. This paper considers the surface treatment of a lead glass with weak and strong acid solutions and in particular hydrogen peroxide, to give a microscopically clean microsphere.
Date: May 21, 1980
Creator: Andrews, J.E. Jr. & Koo, J.C.
Partner: UNT Libraries Government Documents Department
open access

Single-column-based absorption process for treating dissolver off-gas

Description: The fluorocarbon absorption process for krypton and xenon removal from dissolver off-gas is based on exploitation of solubility differences which exist among noble gases and other gas-phase constituents in the fluorocarbon solvent dichlorofluoromethane (refrigerant-12). Process performance and reliability have been demonstrated on an engineering scale with over 10 years of pilot plant operation, including testing with /sup 85/Kr, /sup 133/Xe, and /sup 131/I. The culmination of this work is a si… more
Date: May 21, 1982
Creator: Eby, R. S.; Little, D. K.; Merriman, J. R. & Stephenson, M. J.
Partner: UNT Libraries Government Documents Department
open access

Comparison of Cluster Lensing Profiles with Lambda CDM Predictions

Description: We derive lens distortion and magnification profiles of four well known clusters observed with Subaru. Each cluster is very well fitted by the general form predicted for Cold Dark Matter (CDM) dominated halos, with good consistency found between the independent distortion and magnification measurements. The inferred level of mass concentration is surprisingly high, 8 < c{sub vir} < 15 (<c{sub vir}> = 10.39 {+-} 0.91), compared to the relatively shallow profiles predicted by the {Lam… more
Date: May 21, 2008
Creator: Broadhurst, Tom; U., /Tel Aviv; Umetsu, Keiichi; /Taipei, Inst. Astron. Astrophys.; Medezinski, Elinor; U., /Tel Aviv et al.
Partner: UNT Libraries Government Documents Department
open access

A table-top femtosecond time-resolved soft x-ray transient absorption spectrometer

Description: A laser-based, table-top instrument is constructed to perform femtosecond soft x-ray transient absorption spectroscopy. Ultrashort soft x-ray pulses produced via high-order harmonic generation of the amplified output of a femtosecond Ti:sapphire laser system are used to probe atomic core-level transient absorptions in atoms and molecules. The results provide chemically specific, time-resolved dynamics with sub-50-fs time resolution. In this setup, high-order harmonics generated in a Ne-filled c… more
Date: May 21, 2008
Creator: Leone, Stephen; Loh, Zhi-Heng; Khalil, Munira; Correa, Raoul E. & Leone, Stephen R.
Partner: UNT Libraries Government Documents Department
open access

Quarkonium shadowing in pPb and Pb+Pb collisions

Description: The d+Au data from RHIC, including the pA results from the fixed-target CERN SPS pA data, suggest increased importance of initial-state shadowing and decreasing nuclear absorption with increasing energy. This is not surprising since smaller x is probed at higher energy while absorption due to multiple scattering is predicted to decrease with energy. The CERN SPS data suggest a J/{psi} absorption cross section of about 4 mb without shadowing, and a larger absorption cross section if it is includ… more
Date: May 21, 2007
Creator: Vogt, R
Partner: UNT Libraries Government Documents Department
open access

Chiral perturbation theory with tensor sources

Description: We construct the most general chirally-invariant Lagrangian for mesons in the presence of external sources coupled to the tensor current \bar psi sigma_mu nu psi. In order to have only even terms in the chiral expansion, we consider the new source of O(p2). With this choice, we build the even-parity effective Lagrangian up to the p6-order (NLO). While there are only 4 new terms at the p4-order, at p6-order we find 78 terms for n_f=2 and 113 terms for n_f=3. We provide a detailed discussion on t… more
Date: May 21, 2007
Creator: Cata, Oscar; Cata, Oscar & Mateu, Vicent
Partner: UNT Libraries Government Documents Department
open access

New Quarkonium Results from the BABAR experiment

Description: New BABAR results on B mesons and quarkonia are presented: an analysis of B{sup +} {yields} X(3872)K{sup +} and B{sup 0} {yields} X(3872)K{sup 0} decays with X(3872) {yields} J/{psi}{pi}{sup +}{pi}{sup -}, a precise measurement of the B mass difference {Delta}m{sub B} = m(B{sup 0}) -m(B{sup +}) and a study of hadronic transition between {Upsilon} mesons.
Date: May 21, 2008
Creator: Arnaud, Nicolas & Collaboration, representing the BABAR
Partner: UNT Libraries Government Documents Department
open access

Rick Sawicki Interview for Dartmouth Engineer Magazine

Description: In this issue Rick Sawicki answers the question--What is your role as chief engineer on this project? His reply is--There are two major roles for the Chief Engineer position: (1) to assure that the engineering that is being performed for the project is safely completed in full compliance with all federal, state and Lawrence Livermore National Laboratory policies, standards and procedures and (2) as needed, address special engineering issues as they arise assuring that their resolution is comple… more
Date: May 21, 2008
Creator: Sawicki, R
Partner: UNT Libraries Government Documents Department
open access

Parton Distributions and Spin-Orbital Correlations

Description: In this talk, the author summarizes a recent study showing that the large-x parton distributions contain important information on the quark orbital angular momentum of nucleon. This contribution could explain the conflict between the experimental data and the theory predictions for the polarized quark distributions. Future experiments at JLAB shall provide further test for our predictions.
Date: May 21, 2007
Creator: Feng, Y.
Partner: UNT Libraries Government Documents Department
open access

LLNL nuclear data libraries used for fusion calculations

Description: The Physical Data Group of the Computational Physics Division of the Lawrence Livermore National Laboratory has as its principal responsibility the development and maintenance of those data that are related to nuclear reaction processes and are needed for Laboratory programs. Among these are the Magnetic Fusion Energy and the Inertial Confinement Fusion programs. To this end, we have developed and maintain a collection of data files or libraries. These include: files of experimental data of neu… more
Date: May 21, 1984
Creator: Howerton, R. J.
Partner: UNT Libraries Government Documents Department
open access

Polarization diagnostics and optical pumping development for OPPIS and LAMPF

Description: We report improvement of the polarization diagnostics and their use in the development of the Optically Pumped Polarized Ion Source (OPPIS).
Date: May 21, 1993
Creator: Swenson, D. R.; Tupa, D.; York, R. L.; Dulick, M. & van Dyck, O. B.
Partner: UNT Libraries Government Documents Department
open access

Speckle Imaging Over Horizontal Paths

Description: Atmospheric aberrations reduce the resolution and contrast in surveillance images recorded over horizontal or slant paths. This paper describes our recent horizontal and slant path imaging experiments of extended scenes as well as the results obtained using speckle imaging. The experiments were performed with an 8-inch diameter telescope placed on either a rooftop or hillside and cover ranges of interest from 0.5 km up to 10 km. The scenery includes resolution targets, people, vehicles, and oth… more
Date: May 21, 2002
Creator: Carrano, C J
Partner: UNT Libraries Government Documents Department
open access

CP Violation in Belle/BaBar Part-2

Description: No Description Available.
Date: May 21, 2013
Creator: Yusa, Yosuke & Tech., /Virginia
Partner: UNT Libraries Government Documents Department
open access

Correlation Analysis of TEM Images of Nanocrystal Molecules

Description: Quantitative characterizataion of images of naocrystals and nanostructures is a challenging but important task. The development and optimization of methods for the construction of complex nanostructures rely on imaging techniques. Computer programs were developed to quantify TEM images of nanocrystal/DNA nanostructures, and results are presented for heterodimers annd trimers of gold nanocrystals. The programs presented here have also been used to analyze more complex trimers and tetramers linke… more
Date: May 21, 2008
Creator: Micheel, Christine; Zanchet, Daniele & Alivisatos, A. Paul
Partner: UNT Libraries Government Documents Department
open access

Investigation of a Gas Jet-Produced Hollow Plasma Wakefield Accelerator

Description: The effect of ion motion and the need for practical positron propagation in a plasma wakefield accelerator (PWFA) have incited interest in hollow plasma channels. These channels are typically assumed to be cylindrically symmetric; however, a different geometry might be easier to achieve. The introduction of an obstruction into the outlet of a high Mach number gas jet can produce two parallel slabs of gas separated by a density depression. Here, there is a detailed simulation study of the densit… more
Date: May 21, 2009
Creator: Kirby, N; Blumenfeld, I.; Hogan, M. J.; Siemann, R. H.; Walz, D. R.; Davidson, A. W. et al.
Partner: UNT Libraries Government Documents Department
open access

The Strength of Single Crystal Copper under Uniaxial Shock Compression at Mbar pressures

Description: In situ x-ray diffraction has been used to measure the shear strain (and thus strength) of single crystal copper shocked to Mbar pressures along the [001] and [111] axes. These direct shear strain measurements indicate shear strengths at these ultra-high strain rates (of order 10{sup 9} s{sup -1}) of a few GPa, which are both broadly in agreement with the extrapolation of lower strain-rate data and with non-equilibrium molecular dynamics simulations.
Date: May 21, 2009
Creator: Murphy, W; Higginbotham, A; Kimminau, G; Barbrel, B; Bringa, E; Hawreliak, J et al.
Partner: UNT Libraries Government Documents Department
open access

AVNG as a Test Case for Cooperative Design

Description: Designing a measurement system that might be used in a nuclear facility is a challenging, if not daunting, proposition. The situation is made more complicated when the system needs to be designed to satisfy the disparate requirements of a monitoring and a host party - a relationship that could prove to be adversarial. The cooperative design of the elements of the AVNG (Attribute Verification with Neutrons and Gamma Rays) system served as a crucible that exercised the possible pitfalls in the de… more
Date: May 21, 2010
Creator: Luke, S J
Partner: UNT Libraries Government Documents Department
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