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104
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74
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PROSPECTS FOR PENTAQUARK SEARCHES IN E+D- ANNIHILATIONS AND VV COLLISIONS.
Recent strong experimental evidence of a narrow exotic S = +1 baryon resonance, {Theta}{sup +}, suggests the existence of other exotic baryons. We discuss the prospects of confirming earlier experimental evidence of {Theta}{sup +} and the observation of additional hypothetical exotic baryons in e{sup +}e{sup -} annihilations and {gamma}{gamma} collisions at LEP and B Factories.
Date:
June 28, 2004
Creator:
ARMSTRONG,S.; MELLADO,B. & WU,S. L.
Object Type:
Article
System:
The UNT Digital Library
The ATLAS Inner Detector Commissioning and Calibration
None
Date:
June 28, 2013
Creator:
Aad, G.
Object Type:
Article
System:
The UNT Digital Library
Accelerator Beam Pulsing System With Extremely Wide Range of Pulse Lengths and Pulse Repetition Rates
The following document describes the usage and results of sending pulsed beams of electrically charged particles with electrically wide range of pulse lengths and pulse repetition rates.
Date:
June 28, 1960
Creator:
Aaland, Kristian
Object Type:
Report
System:
The UNT Digital Library
Fermi Large Area Telescope Constraints on the Gamma-ray Opacity of the Universe
None
Date:
June 28, 2013
Creator:
Abdo, A. A.; Ackermann, M.; Ajello, M.; Allafort, A.; Atwood, W. B.; Baldini, L. et al.
Object Type:
Article
System:
The UNT Digital Library
Up-to-date p-p Interaction Modeling and Secondary gamma, e+/- and Neutrino Spectra in Astronomical Environment
We have calculated spectra of stable secondary particles ({gamma}, e{sup {+-}}, {nu}{sub e}, {bar {nu}}{sub e}, {nu}{sub {mu}}{bar {nu}}{sub {mu}}) produced in high energy p-p interactions in astrophysical environment. The calculation has incorporated the up-to-date rising inelastic cross-sections, the diffraction dissociation process, and the Feynman scaling violation for the first time. We then found that the diffractive process makes secondary particle spectra harder than that of the incident proton; that the rising inelastic cross-section and the scaling violation produces significantly more secondary particles than previous calculations. Combination of the three features explain about a half of the ''GeV Excess'' in the EGRET Galactic diffuse {gamma}-ray spectrum with the local cosmic proton spectrum (power-law index around 2.7). The excess can be fully explained if the proton spectral index in the Galactic ridge is harder by 0.2 than above. As an extension of the calculation, we have parameterized the inclusive secondary particle spectra as functions of the incident proton kinetic energy: we predict {approx} 30% more e{sup +} and {nu}{sub e} than e{sup -} and {bar {nu}}{sub e} to be produced in the GeV range by p-p interactions.
Date:
June 28, 2005
Creator:
Abe, T.; Kamae, T.; Karlsson, N.; Koi, T. & Mizuno, T.
Object Type:
Article
System:
The UNT Digital Library
The Discovery of gamma-Ray Emission From The Blazar RGB J0710+591
None
Date:
June 28, 2013
Creator:
Acciari, V. A.; Aliu, E.; Arlen, T.; Aune, T.; Bautista, M.; Beilicke, M. et al.
Object Type:
Article
System:
The UNT Digital Library
Fermi Observations of GRB 090510: a Short Hard Gamma-Ray Burst with an Additional, Hard Power-Law Component from 10 KeV to GeV Energies
None
Date:
June 28, 2013
Creator:
Ackermann, M.; Asano, K.; Atwood, W. B.; Axelsson, M.; Baldini, L.; Ballet, J. et al.
Object Type:
Article
System:
The UNT Digital Library
LLW Notes, Volume 10, Number 4, June 1995
Newsletter distributed to the Low-Level Radioactive Waste Forum members describing current news, policies, and legislation, as well as other information relevant to the management of low-level radioactive waste.
Date:
June 28, 1995
Creator:
Afton Associates, Inc.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Multiphonon Resonance Raman Scattering in InGaN
In In{sub x}Ga{sub 1-x}N epitaxial films with 0.37 < x < 1 and free electron concentrations in the 10{sup 18} cm{sup -3} range, strong resonant Raman scattering of A{sub 1}(LO) phonon is observed for laser excitation in Raman scattering when excited above the direct band gaps. Examination of films with direct band gaps between 0.7 and 1.9 eV using laser energies from 1.9 to 2.7 eV shows that the resonance is broad, extending to up to 2 eV above the direct gap. Multiphonon Raman scattering with up to 5 LO phonons is also observed for excitation close to resonance in alloy samples; this is the highest number of phonon overtones ever observed for multiphonon scattering in a III-V compound under ambient conditions. Coupling of the electron plasmon to the LO phonon to form a longitudinal plasmon coupled mode of the type which is observed in the Raman spectra of n-GaN, appears not to occur in In{sub x}Ga{sub 1-x}N for x > 0.37.
Date:
June 28, 2005
Creator:
Ager, J. W., III; Walukiewicz, W.; Shan, W.; Yu, K. M.; Li, S. X.; Haller, E. E. et al.
Object Type:
Article
System:
The UNT Digital Library
The 2010 Oil Spill: Criminal Liability Under Wildlife Laws
In April 2010 an explosion occurred on an oil rig in the Gulf of Mexico, reportedly killing 11 people, and, according to federal experts, causing the worst oil spill in U.S. history. Millions of barrels of oil are believed to have leaked into the Gulf of Mexico. As the oil spreads, the implications for harm to wildlife grow. The United States has many laws that protect wildlife from harm. This report discusses three: the Endangered Species Act, the Marine Mammal Protection Act, and the Migratory Bird Treaty Act.
Date:
June 28, 2010
Creator:
Alexander, Kristina
Object Type:
Report
System:
The UNT Digital Library
A Coherent FMCW LIDAR Mapping System for Automated Tissue Debridment
The Oak Ridge National Laboratory (ORNL) is developing a prototype 850-nm FMCW lidar system for mapping tissue damage in burn cases for the US Army Medical Research and Material Command. The laser system will provide a 3D-image map of the burn and surrounding area and provide tissue damage assessment.
Date:
June 28, 1999
Creator:
Allgood, Glenn O.; Hutchinson, Donald P. & Richards, Roger K.
Object Type:
Article
System:
The UNT Digital Library
Alpha particle response characterization of CdZnTe
The coplanar-grid as well as other electron-only detection techniques are effective in overcoming some of the material problems of CdZnTe and, consequently, have led to efficient gamma-ray detectors with good energy resolution while operating at room temperature. The performance of these detectors is limited by the degree of uniformity in both electron generation and transport. Despite recent progress in the growth of CdZnTe material, small variations in these properties remain a barrier to the widespread success of such detectors. Alpha-particle response characterization of CdZnTe crystals fabricated into simple planar detectors is an effective tool to accurately study electron generation and transport. We have used a finely collimated alpha source to produce two-dimensional maps of detector response. A clear correlation has been observed between the distribution of precipitates near the entrance contact on some crystals and their alpha-response maps. Further studies are ongoing to determine the mechanism for the observed response variations and the reason for the correlation. This paper presents the results of these studies and their relationship to coplanar-grid gamma-ray detector performance.
Date:
June 28, 2001
Creator:
Amman, Mark; Lee, Julie S. & Luke, Paul N.
Object Type:
Article
System:
The UNT Digital Library
Scotts Valley Energy Office and Human Capacity Building that will provide energy-efficiency services and develop sustainable renewable energy projects.
The primary goal of this project is to develop a Scotts Valley Energy Development Office (SVEDO). This office will further support the mission of the Tribe's existing leadership position as the DOE Tribal Multi-County Weatherization Energy Program (TMCWEP) in creating jobs and providing tribal homes and buildings with weatherization assistance to increase energy efficiency, occupant comfort and improved indoor air quality. This office will also spearhead efforts to move the Tribe towards its further strategic energy goals of implementing renewable energy systems through specific training, resource evaluation, feasibility planning, and implementation. Human capacity building and continuing operations are two key elements of the SVEDO objectives. Therefore, the project will 1) train and employ additional Tribal members in energy efficiency, conservation and renewable resource analyses and implementation; 2) purchase materials and equipment required to implement the strategic priorities as developed by the Scotts Valley Tribe which specifically include implementing energy conservation measures and alternative energy strategies to reduce energy costs for the Tribe and its members; and 3) obtain a dedicated office and storage space for ongoing SVEDO operations.
Date:
June 28, 2013
Creator:
Anderson, Temashio
Object Type:
Report
System:
The UNT Digital Library
Arc-Lamp
Patent for an arc lamp which does not spark for use in headlights for trains and automobiles and in street lights.
Date:
June 28, 1910
Creator:
Anderson, Thomas J.
Object Type:
Patent
System:
The Portal to Texas History
An Investigation of Solid-State Amidization and Imidization Reactions in Vapor Deposited Poly (amic acid)
The condensation polymerization reaction of 4,4'-oxydianiline (ODA) with pyromellitic dianhydride (PMDA) to form poly(amic acid) and the subsequent imidization reaction to form polyimide were investigated for films prepared using vapor deposition polymerization techniques. Fourier-transform infrared spectroscopy (FT-IR), thermal analysis, and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) of films at different temperatures indicate that additional solid-state polymerization occurs prior to imidization reactions. Experiments reveal that, upon vapor deposition, poly(amic acid) oligomers form that have a number-average molecular weight of about 1500 Daltons. Between 100 - 130 C these chains undergo additional condensation reaction to form slightly higher molecular weight oligomers. Calorimetry measurements show that this reaction is exothermic ({Delta}H {approx} -30 J/g) with an activation energy of about 120 kJ/mol. Experimental reaction enthalpies are compared to results from ab initio molecular modeling calculations to estimate the number of amide groups formed. At higher temperatures (150 - 300 C) imidization of amide linkages occurs as an endothermic reaction ({Delta}H {approx} +120 J/g) with an activation energy of about 130 kJ/mol. Solid-state kinetics were found to depend on reaction conversion as well as the processing conditions used to deposit films.
Date:
June 28, 2004
Creator:
Anthamatten, M; Letts, S A; Day, K; Cook, R C; Gies, A P; Hamilton, T P et al.
Object Type:
Article
System:
The UNT Digital Library
Cotton-Chopper.
Patent for effective removal of cotton plants in an alternating pattern with a standard chopping depth, distance, and speed, with illustrations.
Date:
June 28, 1921
Creator:
Antoni, Ernst J.
Object Type:
Patent
System:
The Portal to Texas History
Sludge source term (PUREX process radionuclide dose impact)
This report analyzes the radionuclide dose impact of the PUREX process waste stream. The radionuclide ingestion and inhalation pathways are analyzed. Two spent fuel assemblies processed in the Separation facilities are analyzed, the Mark 31A and Mark 31B. The individual radionuclide significance to dose is evaluated in terms of dose percentage. Comparing the radionuclide individual dose value allows the determination of those radionuclides whose dose impact is significant. The results of this analysis demonstrate that a limited number of radionuclides contribute 1% or more to the total dose and that the major contributor to the sludge source dose is strontium. The results obtained permit reducing the list of radionuclides to be considered in the development of source terms to support the High Level Waste Safety Analysis Report.
Date:
June 28, 1994
Creator:
Aponte, C. I.
Object Type:
Report
System:
The UNT Digital Library
American Recovery and Reinvestment Act (ARRA) - FEMP Technical Assistance - Federal Aviation Administration - Project 209 - Control Tower and Support Building, Boise, Idaho
This report documents an energy audit performed by Pacific Northwest National Laboratory (PNNL) and Redhorse Corporation (Redhorse) conducted on the Federal Aviation Administration (FAA) control tower and base building in Boise, Idaho. This report presents findings of the energy audit team that evaluated construction documents and operating specifications (at the 100% level) followed by a site visit of the facility under construction. The focus of the review was to identify measures that could be incorporated into the final design and operating specifications that would result in additional energy savings for FAA that would not have otherwise occurred.
Date:
June 28, 2010
Creator:
Arends, J. & Sandusky, William F.
Object Type:
Report
System:
The UNT Digital Library
Encapsulation of high-purity germanium detectors
The encapsulation of high-purity germnium detectors is very desirable in order to increase their versatility and reliability. However, rapid and extensive degradation is seen for all detectors made from detector grade crystals which are encapsulated in a simple vacuum. Extensive studies have shown that the cause of this degradation is hydrogen adsorption on the detector surface. There it causes the formation of a strong p/sup +/ inversion layer which in turn shunts the detector junction. Reliable encapsulation is shown to be achievable by the use of hydrogen-free germanium crystals. (auth)
Date:
June 28, 1973
Creator:
Armantrout, G. A.; Wichner, R. & Swierkowski, S. P.
Object Type:
Article
System:
The UNT Digital Library
Second Generation Waste Package Design Study
The following describes the objectives of Project Activity 023 “Second Generation Waste Package Design Study” under DOE Cooperative Agreement DE-FC28-04RW12232. The objectives of this activity are: to review the current YMP baseline environment and establish corrosion testenvironments representative of the range of dry to intermittently wet conditions expected in the drifts as a function of time; to demonstrate the oxidation and corrosion resistance of A588 weathering steel and reference Alloy 22 samples in the representative dry to intermittently dry conditions; and to evaluate backfill and design features to improve the thermal performance analyses of the proposed second-generation waste packages using existing models developed at the University of Nevada, Reno(UNR). The work plan for this project activity consists of three major tasks: Task 1. Definition of expected worst-case environments (humidity, liquid composition and temperature) at waste package outer surfaces as a function of time, and comparison with environments defined in the YMP baseline; Task 2. Oxidation and corrosion tests of proposed second-generation outer container material; and Task 3. Second Generation waste package thermal analyses. Full funding was not provided for this project activity.
Date:
June 28, 2007
Creator:
Armijo, J. S.; Misra, M. & Kar, Piyush
Object Type:
Report
System:
The UNT Digital Library
Bare Beryllium Extrusion Using Graphite Introductory Cones
The following document describes the process of rare beryllium extrusion using graphite introductory cones with the purpose of finding a lubricant which would decrease excessive friction between the billet and prose parts.
Date:
June 28, 1949
Creator:
Arnold, Samuel V.
Object Type:
Report
System:
The UNT Digital Library
Non-Fermi Liquid scaling in UPd{sub x}Cu{sub 5-x}(x = 1,1.5)
We have determined the inelastic magnetic response S({omega}) of UPd{sub x}cu{sub 5{minus}x} (X=1,1.5) for temperatures from 0.3 to 300 K and energies between 05 and 400 meV using the neutron time of flight technique. S({omega}) is virtually identical in the two compound, displaying marginal Fermi Liquid scaling over the entire range of temperatures, as well as scale invariant energetics.
Date:
June 28, 1994
Creator:
Aronson, M. C.; Osborn, R.; Robinson, R. A.; Lynn, J. W.; Chau, R.; Seaman, C. L. et al.
Object Type:
Article
System:
The UNT Digital Library
Modeling and Analysis of the Ranchero Coaxial Explosive Pulse Power Generator System
A key element in the design of a coaxial generator system is the simplicity of the geometry. The clean cylindrical geometry allows us a reasonable chance at modeling RANCHERO performance using our 1D and 2D MHD modeling codes. The results of numerical simulations have been compare to several tests of the RANCHERO system in a variety of configurations. Recent comparisons of 1D calculations with the REOT-2 data have been extremely good and suggest that the generator is behaving in a very 1D like nature until reaching 90-95% of peak current. Differences between calculated current and measured performance during the last 3 mm (out of 70 mm) of flux compression may be a consequence of either the EOS for SF{sub 6}, 2D effects, or both. This study will examine the existing models and attempt to provide a robust integrated model which can then be used to drive design studies, pre- and post-shot analysis, and predict performance parameters for slight variations of the base design of RANCHE RO.
Date:
June 28, 1999
Creator:
Atchison, W.L.; Goforth, J.H.; Lindemuth, I.R. & Reinovsky, R.E.
Object Type:
Article
System:
The UNT Digital Library
Branching Fraction and P-violation Charge Asymmetry Measurements for B-meson Decays to eta K+-, eta pi+-, eta'K, eta' pi+-, omega K, and omega pi+-
The authors present measurements of the branching fractions for B{sup 0} meson decays to {eta}{prime}K{sup 0} and {omega}K{sup 0}, and of the branching fractions and CP-violation charge asymmetries for B{sup +} meson decays to {eta}{pi}{sup +}, {eta}K{sup +}, {eta}{prime}{pi}{sup +}, {eta}{prime}K{sup +}, {omega}{pi}{sup +}, and {omega}K{sup +}. The data, collected with the BABAR detector at the Stanford Linear Accelerator Center, represent 383 million B{bar B} pairs produced in e{sup +}e{sup -} annihilation. The measurements agree with previous results; they find no evidence for direct CP violation.
Date:
June 28, 2007
Creator:
Aubert, B.
Object Type:
Article
System:
The UNT Digital Library