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Meson spectroscopy viewed from J//PSI/ decay: Gluonic states at BEPC

Description: The theoretical and experimental status of the search for gluonic states is reviewed. Progress clearly requires much higher statistics studies of J//psi/ decay, as will be possible at the Beijing Electron Positron Collider. 83 refs.
Date: July 1, 1987
Creator: Chanowitz, Michael S.
Partner: UNT Libraries Government Documents Department
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Report of the Intermediate-)ital p)/sub Perpendicular/ Detector Group: A Beauty Spectrometer for the SSC (Superconducting Super Collider)

Description: A ''Beauty Spectrometer'' has been designed for studies of B physics at the SSC. The ultimate goal is a definitive measurement of CP violation in the B system. The spectrometer consists of two stages and occupies one side of an intermediate-luminosity interaction region. An upstream, or intermediate, stage extends from the interaction point to 14 m and covers the angular region from 57 mrad (3.3 degree) to 350 mrad (20 degree). The forward stage extends to 77 m and to angles down to 5.7 mrad. T… more
Date: July 1, 1987
Creator: Foley, K. J.; Buchanan, C. D.; Morrison, R. J.; McHugh, S. W.; Witherell, M. S.; Atac, M. et al.
Partner: UNT Libraries Government Documents Department
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National Science Foundation Grants; Young Scholars Projects for High Ability and High Potential Secondary School Students; Guidelines for Proposal Submission

Description: Article in the Federal Register, concerning Young Scholars projects, including project development, project environment, project design, activities, the selection of participants, participant costs, project staff, projects site, eligible organizations, budget, proposal preparation and submission, evaluation and selection of proposals, awards, grant administrations, inquiries, program assessment activities, and SST projects.
Date: July 5, 1987
Partner: Texas Academy of Mathematics and Science
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Reggeon Field Theory and the phases of QCD

Description: We propose a Reggeon Field Theory phase diagram involving Sub-critical and Super-critical Pomeron behavior and the Expanding Disc. We describe the derivation of Reggeon Field Theory from QCD using infra-red analysis of the reggeon diagrams of the spontaneously broken theory. Matching the Reggeon Field Theory phase-diagram to that of lattice QCD with many fermions has significant implications for the chiral properties of continuum QCD when the number of flavors is less than the maximum allowed b… more
Date: July 21, 1987
Creator: White, A.R.
Partner: UNT Libraries Government Documents Department
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Structure and properties of nanophase TiO/sub 2/

Description: Ultrafine-grained, nanophase samples of TiO/sub 2/ (rutile) were synthesized by the gas-condensation method and subsequent in-situ compaction, and then studied by transmission electron microscopy, Vickers hardness measurements, and positron annihilation spectroscopy as a function of sintering temperature. The nanophase compacts densified rapidly above 500/sup 0/C, with only a small increase in grain size. The hardness values obtained by this method are comparable to or greater than coarser-grai… more
Date: July 1, 1987
Creator: Siegel, R.W.; Hahn, H.; Ramasamy, S.; Zongquan, Li; Ting, Lu & Gronsky, R.
Partner: UNT Libraries Government Documents Department
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An Analysis of Recent Measurements of the Temperature of theCosmic Microwave Background Radiation

Description: This paper presents an analysis of the results of recent temperature measurements of the cosmic microwave background radiation (CMBR). The observations for wavelengths longer than 0.1 cm are well fit by a blackbody spectrum at 2.74 {+-} 0.02 K; however, including the new data of Matsumoto et al. (1987) the result is no longer consistent with a Planckian spectrum. The data are described by a Thomson-distortion parameter u = 0.021 {+-} 0.002 and temperature 2.823 {+-} 0.010 K at the 68% confidenc… more
Date: July 1, 1987
Creator: Smoot, G.; Levin, S.M.; Witebsky, C.; De Amici, G. & Rephaeli, Y.
Partner: UNT Libraries Government Documents Department
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Nitrogen at very high pressure

Description: High-pressure results for nitrogen are reviewed and discussed in terms of phenomena that occur at extreme conditions.
Date: July 1, 1987
Creator: Nellis, W.J.
Partner: UNT Libraries Government Documents Department
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Electrical Conductivity and Equation of State Measurements on Planetary Fluids at High Pressures and Temperatures

Description: Hugoniot equation-of-state, shock temperature, and electrical conductivity measurements are reported for fluids believed to be the primary constituents of the planets Uranus and Neptune. The equation-of-state results are compared with calculations performed using a statistical mechanical, chemical equilibrium computer code and electrical conductivities are discussed in terms of the recently measured magnetic field of Uranus. 4 refs., 2 figs., 1 tab.
Date: July 1, 1987
Creator: Hamilton, D. C.; Nellis, W. J.; Holmes, N. C.; Radousky, H. B.; Ree, F. H. & Nicol, M.
Partner: UNT Libraries Government Documents Department
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Safety and licensing of MHTGR (Modular High Temperature Gas Cooled Reactor)

Description: The Modular High Temperature Gas Cooled Reactor (MHTGR) design meets stringent top-level regulatory and user safety requirements that require that the normal and off-normal operation of the plant not disturb the public's day-to-day activities. Quantitative, top-level regulatory criteria have been specified from US NRC and EPA sources to guide the design. The user/utility group has further specified that these criteria be met at the plant boundary. The focus of the safety approach has then been … more
Date: July 1, 1987
Creator: Silady, F.A.; Millunzi, A.C.; Kelley, A.P. Jr. & Cunliffe, J.
Partner: UNT Libraries Government Documents Department
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Theoretical approaches to chemical dynamics in highly compressed fluids

Description: Methods that have been developed in the chemical physics community over the previous decade are applied to problems involving the dynamic chemical behavior of fluids under highly compressed conditions. The methods require detailed structural information about the environment seen by the reacting molecules. These methods are briefly reviewed. Examples for both statically compressed and shock conditions are discussed.
Date: July 1, 1987
Creator: Calef, D.F.
Partner: UNT Libraries Government Documents Department
open access

The SLAC Linear Collider: A status report

Description: This report presents progress made at the Stanford Linear Collider (SLC). Design goals of the various components are compared to measurements made on the equipment. 8 figs., 2 tabs. (JDH)
Date: July 1, 1987
Creator: Richter, B. & Stiening, R.
Partner: UNT Libraries Government Documents Department
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Modes, masses, metallicities, and magnitudes of RR Lyrae variables

Description: The author reviews past and recent developments in the study of RR Lyrae variables. He provides supporting evidence for a large helium content but remains uncertain as to their masses and luminosities. Time dependent convection is offered as a probable explanation for the double mode pulsations of these stars. 25 refs., 8 figs., 3 tabs.
Date: July 1, 1987
Creator: Cox, A. N.
Partner: UNT Libraries Government Documents Department
open access

Industrial applications of ion implantation into metal surfaces

Description: The modern materials processing technique, ion implantation, has intriguing and attractive features that stimulate the imaginations of scientists and technologists. Success of the technique for introducing dopants into semiconductors has resulted in a stable and growing infrastructure of capital equipment and skills for use of the technique in the economy. Attention has turned to possible use of ion implantation for modification of nearly all surface related properties of materials - optical, c… more
Date: July 1, 1987
Creator: Williams, J. M.
Partner: UNT Libraries Government Documents Department
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Properties of e/sup +/e/sup -/ interactions at. sqrt. s = 50 and 52 GeV

Description: Bhabha scattering and multi-hadronic e/sup +/e/sup -/ annihilation events have been observed in the AMY detector at ..sqrt..s = 50 GeV and ..sqrt..s = 52 GeV at the TRISTAN e/sup +/e/sup -/ storage ring. Here we report the results of a preliminary analysis of the properties of these events. We present results for the e/sup +/e/sup -/ ..-->.. e/sup +/e/sup -/, e/sup +/e/sup -/ ..-->.. ..gamma gamma.. and e/sup +/e/sup -/ ..-->.. ..mu../sup +/..mu../sup -/ differential cross sections as well as f… more
Date: July 1, 1987
Partner: UNT Libraries Government Documents Department
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EXELFS (Extended Electron Energy Loss Fine Structure) of amorphous and crystalline SiC. [Extended Electron Energy Loss Fine Structure]

Description: Extended Electron Energy Loss Fine Structure (EXELFS) is a technique which is sensitive to the local atomic environment surrounding atoms. The ability to perform EXELFS measurements with the use of an electron microscope enables one to study materials properties at high spatial resolution. Its use as a method to evaluate amorphous materials is especially noteworthy since EXELFS is sensitive to the structure and composition within near neighbor distances of specific types of atoms. The materials… more
Date: July 1, 1987
Creator: Angelini, P.; Sevely, J. C.; Hssein, K. & Zanchi, G.
Partner: UNT Libraries Government Documents Department
open access

The Mark III vertex chamber and prototype test results

Description: A vertex chamber has been constructed for use in the Mark III experiment. The chamber is positioned inside the current main drift chamber and will be used to trigger data collection, to aid in vertex reconstruction, and to improve the momentum resolution. This paper discusses the chamber's construction and performance and tests of the prototype.
Date: July 1, 1987
Creator: Grab, C.
Partner: UNT Libraries Government Documents Department
open access

Experimental review of light quark spectroscopy from e/sup +/e/sup -/ production and. gamma gamma. collisions

Description: This is an experimental review of light quark spectroscopy from e/sup +/e/sup -/ production and ..gamma gamma.. collision results presented at the 2nd International Conference on Hadron Spectroscopy at KEK, Japan. The recent results in ..gamma gamma.. production have evidence for the J/sup PC/ = 1/sup + +/, E/f/sub 1/(1420) and D/f/sub 1/(1285), mesons from the TPC and Mark II collaborations and upper limits for pseudoscalar resonances from the Crystal Ball collaboration. The results in J/psi r… more
Date: July 1, 1987
Creator: Toki, W.H.
Partner: UNT Libraries Government Documents Department
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Limits on rare D-meson decays

Description: The latest results from a number of experiments on searches for rare decays of the charmed D-mesons are summarized. This talk reports on upper limits on flavor changing weak neutral current reactions and on processes that do not conserve the lepton family number.
Date: July 1, 1987
Creator: Grab, C.
Partner: UNT Libraries Government Documents Department
open access

Influence of internally generated fields on odd-photon pumping of dipole-allowed transitions in atomic gases

Description: The dramatic influence of multiwave mixing processes on resonant multiphoton excitation of dipole-allowed quantum transitions are discussed. Brief comparisons are made between different theoretical approaches used in treating the same underlying physics, and between the predictions and available experimental manifestations of the phenomenon for three-photon and five-photon induced processes.
Date: July 1, 1987
Creator: Garrett, W. R.
Partner: UNT Libraries Government Documents Department
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Gravity and fault structures, Long Valley caldera, California

Description: The main and catastrophic phase of eruption in Long Valley occurred 0.73 m.y. ago with the eruption of over 600 km/sup 3/ of rhyolitic magma. Subsequent collapse of the roof rocks produced a caldera which is now elliptical in shape, 32 km east-west by 17 km north-south. The caldera, like other large Quarternary silicic ash-flow volcanoes that have been studied by various workers, has a nearly coincident Bouguer gravity low. Earlier interpretations of the gravity anomaly have attributed the enti… more
Date: July 1, 1987
Creator: Carle, S. F. & Goldstein, N. E.
Partner: UNT Libraries Government Documents Department
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Charmonium spectroscopy, 1987

Description: The state of charmonium spectroscopy is reviewed. All analyses proceed from a spin-dependent, non-relativistic Schroedinger equation. Many of the possible branching ratios for charm like states are investigated. 17 refs.
Date: July 30, 1987
Creator: Cahn, R.N.
Partner: UNT Libraries Government Documents Department
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Special targets for nuclear reaction and spectroscopic studies

Description: Strongly focused and monoenergetic charged-particle beams from modern accelerators and targets fabricated from quantities of isotopically enriched and stable materials are the essential components from many current nuclear physics experiments. Although a large body of this kind of experimental work requires substantial amounts of target material, an important subset of such experiments can be done with as little as a few ..mu..g of material. Experiments where charged particles or electrons can … more
Date: July 31, 1987
Creator: Lanier, R.G.
Partner: UNT Libraries Government Documents Department
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Multilayer-Coated Mirrors as Power Filters in Synchrotron Radiation Beamlines

Description: Multilayer-coated mirrors, rather than conventional total-reflection mirrors, have been proposed as a means to reduce power incident on the first optical element of high resolution monochromators. We have designed, fabricated, installed and characterized a multilayer pre-mirror specifically for the 800 to 4000 eV range for the X24-A bending magnet beamline at the National Synchrotron Light Source. Various aspects of this application are discussed, including power and thermal considerations, bea… more
Date: July 1, 1987
Creator: Kortright, J. B.; Plag, P.; Perera, R. C. C.; Cowan, P. L.; Lindle, D. W. & Karlin, B.
Partner: UNT Libraries Government Documents Department
open access

Use of the LLNL 40 kV electric gun to study the shock response of 21-6-9 stainless steel

Description: Exploding foil-flyer plate (''electric gun'') methods have been used to shock 21-6-9 stainless steel over a wide range of shock pulse amplitudes (20 to 53 GPa) and durations (10 to 70 ns). Dislocation generation and twinning have been studied in recovered specimens with the results providing support for the concept of finite rate plastic processes. 24 refs., 6 figs., 1 tab.
Date: July 15, 1987
Creator: Brusso, J. A.; Mikkola, D. E.; Bloom, G.; Lee, R. S. & Von Holle, W.
Partner: UNT Libraries Government Documents Department
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