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Radiative corrections in SU/sub 2/ x U/sub 1/ LEP/SLC

Description: We show the sensitivity of various experimental measurements to one-loop radiative corrections in SU/sub 2/ x U/sub 1/. Models considered are the standard GSW model as well as extensions of it which include extra quarks and leptons, SUSY and certain technicolor models. The observation of longitudinal polarization is a great help in seeing these effects in asymmetries in e/sup +/e/sup -/ ..-->.. ..mu../sup +/..mu../sup -/, tau/sup +/tau/sup -/ on Z/sup 0/ resonance. 25 refs., 22 figs., 10 tabs.
Date: June 1, 1985
Creator: Lynn, B. W.; Peskin, M. E. & Stuart, R. G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Lattice gaugefixing and other optics in lattice gauge theory

Description: We present results from four projects. In the first, quark and gluon propagators and effective masses and {Delta}I = 1/2 Rule operator matching coefficients are computed numerically in gaugefixed lattice QCD. In the second, the same quantities are evaluated analytically in the strong coupling, N {yields} {infinity} limit. In the third project, the Schwinger model is studied in covariant gauges, where we show that the effective electron mass varies with the gauge parameter and that longitudinal … more
Date: June 1, 1992
Creator: Yee, Ken.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Measurements of beat wave accelerated electrons in a toroidal plasma

Description: Electrons are accelerated by large amplitude electron plasma waves driven by counter-propagating microwaves with a difference frequency approximately equal to the electron plasma frequency. Energetic electrons are observed only when the phase velocity of the wave is in the range 3v{sub e} < v{sub ph} < 7v{sub e} (v{sub ph} was varied 2v{sub e} < v{sub ph} < 10v{sub e}), where v{sub e} is the electron thermal velocity, (kT{sub e}/m{sub e}){sup {1/2}}. As the phase velocity increases, fewer elect… more
Date: June 1, 1992
Creator: Rogers, J.H. (Princeton Univ., NJ (United States). Plasma Physics Lab.) & Hwang, D.W. (California Univ., Davis, CA (United States). Dept. of Applied Science Lawrence Livermore National Lab., CA (United States))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Radiation Shielding Design Considerations for Doublet III

Description: Calculations and measurements were made of the bremsstrahlung (x-ray) doses resulting from runaway electron shots at Doublet III. The analysis considered direct, wall-scattered, and skyshine contributions. Reasonably good agreement was obtained between calculations and measurements. The x-ray dose in the control room was about 1 mR per runaway shot, while that at the north boundary was undetectable, with a calculated value of 0.05 mR per shot. These low doses attest to the adequacy of the 2 ft … more
Date: June 1, 1980
Creator: Engholm, B. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Inherently safe nuclear-driven internal combustion engines

Description: A family of nuclear driven engines is described in which nuclear energy released by fissioning of uranium or plutonium in a prompt critical assembly is used to heat a working gas. Engine performance is modeled using a code that calculates hydrodynamics, fission energy production, and neutron transport self-consistently. Results are given demonstrating a large negative temperature coefficient that produces self-shutoff of energy production. Reduced fission product inventory and the self-shutoff … more
Date: June 14, 1991
Creator: Alesso, P.; Chow, Tze-Show; Condit, R.; Heidrich, J.; Pettibone, J. & Streit, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Benchmark field study of deep neutron penetration

Description: A unique benchmark neutron field has been established at the Lawrence Livermore National Laboratory (LLNL) to study deep penetration neutron transport. At LLNL, a tandem accelerator is used to generate a monoenergetic neutron source that permits investigation of deep neutron penetration under conditions that are virtually ideal to model, namely the transport of mono-energetic neutrons through a single material in a simple geometry. General features of the Lawrence Tandem (LATAN) benchmark field… more
Date: June 10, 1991
Creator: Morgan, J. F.; Sale, K. (Lawrence Livermore National Lab., CA (USA) ); Gold, R.; Roberts, J. H. & Preston, C. C. (Metrology Control Corp., Richland, WA (USA) )
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Preliminary results on nu/sub. mu. / + e/sup -/. -->. nu/sub. mu. / + e/sup -/

Description: We present here preliminary results on a recent experiment on nu/sub ..mu../ - e/sup -/ elastic scattering. A brief review of the Glashow-Salam-Weinberg theory is given, indicating how the measurement of the total cross section gives rise to an ambiguous solution for sin/sup 2/ THETA/sub w/, and showing how the differential cross section can be used to resolve the ambiguity. The experimental configuration and the extraction of the signal are described. The data are compared with those from our … more
Date: June 1, 1982
Creator: Baker, N.J.; Connolly, P.L. & Kahn, S.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Top physics at CDF

Description: We present here preliminary results of an extension of our already published search for the top quark. The search is based on a data sample collected during the 1988--1989 run of the Fermilab Tevatron Collider corresponding to an integrated luminosity of 4.4 pb {sup {minus}1}. We find no evidence for top quark production and we establish preliminary limits on the t-tbar production cross section as a function of the top mass (M{sub top}) in p-pbar collisions at {radical}s = 1.8 TeV. Using theore… more
Date: June 1, 1991
Creator: Campagnari, C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Annual environmental monitoring report of the Lawrence Berkeley Laboratory, 1981

Description: Results for 1981 of the LBL Environmental Monitoring Program are given. Data include monitoring results for accelerator-produced radiation, airborne and waterborne radionuclides, and nonradioactive pollutants. Population doses resulting from LBL operations are given in terms of accelerator-produced and airborne radioactivities. Trends in the environmental impacts of LBL operations are discussed in terms of accelerator-produced, airborne, and waterborne radionuclides. (ERB)
Date: June 1, 1982
Creator: Schleimer, G.E. (ed.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Systematics of gamma decay through low-lying vibrational levels of even--even nuclei excited by (p,p') and (n,n') reactions

Description: A series of experiments was performed in which gamma-ray spectra were measured, using a Ge(Li) detector, for incident 7 to 26-MeV protons on the even-even vibrational nuclei /sup 56/Fe, /sup 62/Ni, /sup 64/Zn, /sup 108/Pd, /sup 110/Cd, /sup 114/Cd, /sup 116/Cd, /sup 116/Sn, /sup 120/Sn, and /sup 206/Pb, and for incident 14-MeV neutrons on natural Fe, Ni, Zn, Cd, Sn, and Pb. These measurements yielded gamma-ray cross sections from which it was inferred that almost all of the gamma cascades from … more
Date: June 30, 1977
Creator: Koopman, R. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Gamma Exposure Rates Due to Neutron Activation of Soil: Site of Hood Detonation, Operation Plumbbob

Description: This paper is the result of some recent discussions of exposure rates within the first few hours of the Hood detonation of the Plumbbob series due to neutron activation of soil. We estimated the exposure rates from 1/2 to 3 h after the detonation from ground zero to 1000 yards from ground zero. The area was assumed to be uncontaminated by fallout. Soil samples from the area of the Nevada Test Site at which the Hood device was detonated were sent to ORNL by Dr. John Malik of Los Alamos and by Mr… more
Date: June 1, 1980
Creator: Auxier, J. A. & Ohnesorge, W. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Plasma boundary layer and magnetopause layer of the earth's magnetosphere

Description: IMP 6 observations of the plasma boundary layer (PBL) and magnetopause layer (MPL) of the earth's magnetosphere indicate that plasma in the low-latitude portion of the PBL is supplied primarily by direct transport of magnetosheath plasma across the MPL and that this transport process is relatively widespread over the entire sunward magnetospheric boundary.
Date: June 1, 1979
Creator: Eastman, T.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Progress report of a research program in experimental and theoretical high energy physics, 1 January 1992--31 May 1992

Description: This report discusses research at Brown University in experimental and theoretical high energy physics. Some of the research programs conducted are: interactions of leptons and hadrons form accelerator and astrophysical sources; hadron interactions with hydrogen and heavier nuclei; large volume detector at the Gran Sasso Laboratory; GEM collaboration at SSC; and hadron colliders and neutrino physics. (LSP)
Date: June 1, 1992
Creator: Brandenberger, R.; Cutts, D.; Fried, H. M.; Guralnik, G.; Jevicki, A.; King, K. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Channel coincidence counter: version 1

Description: A thermal neutron coincidence counter has been designed for the assay of fast critical assembly fuel drawers and plutonium-bearing fuel rods. The principal feature of the detector is a 7-cm by 7-cm by 97-cm detector channel, which provides a uniform neutron detection efficiency of 16% along the central 40 cm of the channel. The electronics system is identical to that used for the High-Level Neutron Coincidence Counter.
Date: June 1, 1980
Creator: Krick, M. S. & Menlove, H. O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fusion-neutron production in the TFTR with deuterium neutral beam injection

Description: We report measurements of the fusion reaction rate in the Tokamak Fusion Test Reactor (TFTR) covering a wide range of plasma conditions and injected neutral beam powers up to 6.3 MW. The fusion-neutron production rate in beam-injected plasmas decreases slightly with increasing plasma density n/sub e/, even though the energy confinement parameter n/sub e/tau/sub E/ generally increases with density. The measurements indicate and Fokker-Planck simulations show that with increasing density the sour… more
Date: June 1, 1986
Creator: Hendel, H. W.; England, A. C.; Jassby, D. L.; Mirin, A. A. & Nieschmidt, E. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Physics at the Z/sup 0/

Description: With the next generation of electron-positron colliders on the immediate horizon, we review the standard model and the precision tests of it which can be carried out at the Z/sup 0/ peak. Emphasis is put on the possibilities for discovering new physics, from additional quarks and leptons to extra neutral gauge bosons. 33 refs., 9 figs.
Date: June 1, 1986
Creator: Gilman, Frederick J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Titanium-II: an evaluated nuclear data file. [E < 20. 0 MeV]

Description: A comprehensive evaluated nuclear data file for elemental titanium is outlined including definition of the data base, the evaluation procedures and judgments, and the final evaluated results. The file describes all significant neutron-induced reactions with elemental titanium and the associated photon-production processes to incident neutron energies of 20.0 MeV. In addition, isotopic-reaction files, consistent with the elemental file, are separately defined for those processes which are import… more
Date: June 1, 1977
Creator: Philis, C.; Howerton, R. & Smith, A. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Dislocation morphology in deformed and irradiated niobium. [Neutron irradiation]

Description: Niobium foils of moderate purity were examined for the morphology of dislocations or defect clusters in the deformed or neutron-irradiated state by transmission electron microscopy. New evidence has been found for the dissociation of screw dislocations into partials on the (211) slip plane according to the Crussard mechanism: (a/2) (111) ..--&gt;.. (a/3) (111) + (a/6) (111).
Date: June 1, 1977
Creator: Chang, C. P.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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Identifying heavy Higgs bosons

Description: Two techniques for identifying heavy Higgs bosons produced at SSC energies are discussed. In the first, the Higgs boson decays into ZZ, with one Z decaying into an e-pair or ..mu..-pair and the other into a neutrino pair. In the second, the production of the Higgs boson by WW fusion is tagged by detecting the quarks that produced the bremsstrahlung virtual W's. The associated Higgs decay is identified by one leptonic and one hadronic decay. Both methods appear capable of finding a heavy Higgs b… more
Date: June 1, 1986
Creator: Cahn, R.N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Graphs of the cross sections in the Alternate Monte Carlo Cross Section library at the Los Alamos Scientific Laboratory

Description: Graphs of all neutron cross sections and photon production cross sections on the Alternate Monte Carlo Cross Section (AMCCS) library have been plotted along with local neutron heating numbers. The values of ..nu..-bar, the average number of neutrons per fission, are also plotted for appropriate isotopes.
Date: June 1, 1980
Creator: Seamon, R. E. & Soran, P. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Structure and flux pinning properties of irradiation defects in YBa sub 2 Cu sub 3 O sub 7-x

Description: We review our investigations of defects produced in YBa{sub 2}Cu{sub 3}O{sub 7-x} by various forms of irradiation. The defect microstructure has been studied by transmission electron microscopy (TEM). Irradiation enhancements of flux pinning have been studied by SQUID magnetometry on single crystals. In many cases the same single crystals were used in both TEM and SQUID investigations. The primary atom recoil spectra for all the irradiations studied have been carefully calculated and used to co… more
Date: June 1, 1992
Creator: Kirk, M.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Implications of the 17 keV neutrino

Description: Constraints on the theoretical interpretation of the 17 keV neutrino are reviewed. A simple understanding of the 17 keV neutrino is provided by flavon models, which involve the spontaneous breaking of Abelian lepton symmetries and have only the usual three light neutrino species. Signatures for this class of models include neutrino oscillations, tau decay to an electron and a flavon, and invisible decay modes of the Higgs boson to two flavons.
Date: June 1, 1991
Creator: Hall, L.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Neutrino emission by the pair, plasma, and photo processes in the Weinberg-Salam model

Description: The results of numerical integrations of the rates and emissivities of the photo, pair, and plasma neutrino emission mechanisms in the Weinberg-Salam theory of the weak interaction are presented. The range of densities 10 gm cm/sup -3/ less than or equal to rho < 10/sup 14/ gm cm/sup -3/ and the temperature range 10/sup 8/K less than or equal to T less than or equal to 10/sup 11/K are considered. Fitting formulae, similar to those provided by Beaudet, Petrosian, and Salpeter, which reproduce th… more
Date: June 1, 1986
Creator: Schinder, P. J.; Schramm, D. N.; Witta, P. J.; Margolis, S. H. & Tubbs, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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