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An essay on discrete foundations for physics

Description: We base our theory of physics and cosmology on the five principles of finiteness, discreteness, finite computability, absolute non-uniqueness, and strict construction. Our modeling methodology starts from the current practice of physics, constructs a self-consistent representation based on the ordering operator calculus and provides rules of correspondence that allow us to test the theory by experiment. We use program universe to construct a growing collection of bit strings whose initial porti… more
Date: July 1, 1988
Creator: Noyes, H. P. & McGoveran, D. O.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Discrete physics: Practice, representation and rules of correspondence

Description: We make a brief historical review of some aspects of modern physics which we find most significant in our own endeavor. We discuss the ''Yukawa Vertices'' of elementary particle theory as used in laboratory practice, second quantized field theory, analytic S-Matrix theory and in our own approach. We review the conserved quantum numbers in the Standard Model of quarks and leptons. This concludes our presentation of the ''E-frame.'' We try to develop a self-consistent representation of our theory… more
Date: July 1, 1988
Creator: Noyes, H. Pierre
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Electron-positron collision physics: 1 MeV to 2 TeV

Description: An overview of electron-positron collision physics is presented. It begins at 1 MeV, the energy region of positronium formation, and extends to 2 TeV, the energy region which requires an electron- positron linear collider. In addition, the concept of searching for a lepton-specific forces is discussed. 18 refs., 15 figs., 1 tab.
Date: July 1, 1988
Creator: Perl, Martin L.
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Partner: UNT Libraries Government Documents Department
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Health physics manual of good practices for the prompt detection of airborne plutonium in the workplace

Description: This manual provides guidance to US Department of Energy (DOE) facilities on the prompt detection of airborne plutonium in the workplace. Information is first given to aid in detection systems that will function effectively in various workplaces. Steps in designing a system are covered: its general requirements, the plotting of workplace sources of plutonium, and methods of determining workplace airflow patterns. Guidance is provided on the proper numbers and locations of probe sites, the orien… more
Date: July 1, 1988
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Personnel Neutron Dose Assessment Upgrade: Volume 2, Field Neutron Spectrometer for Health Physics Applications

Description: Both the (ICRP) and the (NCPR) have recommended an increase in neutron quality factors and the adoption of effective dose equivalent methods. The series of reports entitled Personnel Neutron Dose Assessment Upgrade (PNL-6620) addresses these changes. Volume 1 in this series of reports (Personnel Neutron Dosimetry Assessment) provided guidance on the characteristics, use, and calibration of personnel neutron dosimeters in order to meet the new recommendations. This report, Volume 2: Field Neutro… more
Date: July 1, 1988
Creator: Brackenbush, L. W.; Reece, W. D.; Miller, S. D.; Endres, G. W. R.; Durham, J. S.; Scherpelz, R. I. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Cryogenic System for the ASTROMAG Test Coil

Description: This paper describes an all helium, low heat leak cryogenic system for the testing of a superconducting magnet coil for the ASTROMAG particle astrophysics experiment. The superconducting coil, which is projected to have a stored magnetic energy of 4 to 7 MJ, will be cooled by pumped helium from a liquid helium storage tank using a fountain effect helium II pump. The pumping system can be used to cool the cryogenic system down as well as keep the coil cold during its superconducting operation. T… more
Date: July 1, 1988
Creator: Green, M. A.; Levine, S. M.; Smoot, G. F. & Witebsky, C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Summary of the Relativistic Heavy Ion Sessions

Description: This paper briefly discusses the topics covered in the relativistic heavy ion in sessions. The prime motivation for these investigations is the possibility of forming quark matter, therefore the formation of a quark-gluon plasma. Topics on suppression of J//psi/ production, th equation of state of nuclear matter, transverse energy distributions and two pion interferometry techniques are discussed. 38 refs. (LSP)
Date: July 1, 1988
Creator: Harris, J. W.
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Partner: UNT Libraries Government Documents Department
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A NEUTRON REFLECTION TEST OF THE 'REPTATION TIME'

Description: Two chemically similar polymers in contact at a temperature above the glass transition interdiffuse with a concentration profile which, for times shorter than a ''reptation time,'' is thought to remain discontinuous at the interface. It is shown how the size of the concentration gap can be systematically tested by neutron reflection from bilayers of deuterated/protonated polymers. 6 refs., 2 figs.
Date: July 1, 1988
Creator: Karim, A.; Mansour, A.; Felcher, G. P. & Russell, T. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Prospects for understanding the astrophysical r-process

Description: This paper discusses several recent advances toward a deeper understanding of the still unknown astrophysical site for rapid (r-process) neutron capture nucleosynthesis. The physical constraints on the r-process from the input nuclear data are highlighted and the particular importance of the recent measurements of beta-decay lifetimes along the r-process path is discussed. Astronomical observations of s- and r-process elemental abundances on metal poor halo stars are also discussed, in the cont… more
Date: July 1, 1988
Creator: Mathews, G. J. & Cowan, J. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Numerical solutions of three-dimensional MHD flows in strong non-uniform transverse magnetic fields

Description: Magnetohydrodynamic flows of liquid metals in thin conducting ducts of various geometries in the presence of strong nonuniform transverse magnetic fields are examined. The interaction parameter and Hartmann number are assumed to be large, whereas the magnetic Reynolds number is assumed to be small. Under these assumptions, viscous and inertial effects are confined in very thin boundary layers adjacent to the walls. At walls parallel to the magnetic field lines, as at the side walls of a rectang… more
Date: July 1, 1988
Creator: Hua, T. Q. & Walker, J. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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New approach to high energy SU/sub 2L/ /times/ U/sub 1/ radiative corrections

Description: We present a new approach to SU/sub 2L/ /times/ U/sub 1/ radiative corrections at high energies. Our approach is based on the infrared summation methods of Yennie, Frautschi and Suura, taken together with the Weinberg-'t Hooft renormalization group equation. Specific processes which have been realized via explicit Monte Carlo algorithms are e/sup +/e/sup /minus// ..-->.. f/bar f/' + n(..gamma..), f = ..mu.., /tau/, d, s, u, c, b or t and e/sup +/e/sup /minus// ..-->.. e/sup +/e/sup /minus// + n… more
Date: July 1, 1988
Creator: Ward, B.F.L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Photon-photon collisions

Description: Highlights of the VIIIth International Workshop on Photon-Photon Collisions are reviewed. New experimental and theoretical results were reported in virtually every area of ..gamma gamma.. physics, particularly in exotic resonance production and tests of quantum chromodynamics where asymptotic freedom and factorization theorems provide predictions for both inclusive and exclusive ..gamma gamma.. reactions at high momentum transfer. 73 refs., 12 figs.
Date: July 1, 1988
Creator: Brodsky, Stanley J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Radiative widths of resonances (experiments)

Description: After a hiatus of several years, this conference brings us considerable new data on resonance production in photon photon interactions. I will first discuss the contributions concerning the tensor, pseudoscalar and scalar mesons, then review the current status of the (c/ovr string/c /eta//sub c/) and finally summarize the exciting new results concerning the spin 1 mesons. 40 refs., 21 figs., 7 tabs.
Date: July 1, 1988
Creator: Gidal, G.
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Partner: UNT Libraries Government Documents Department
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Why the proton spin is not due to quarks

Description: Recent EMC data on the spin-dependent proton structure function suggest that very little of the proton spin is due to the helicity of the quarks inside it. We argue that, at leading order in the 1/N/sub c/ expansion, none of the proton spin would be carried by quarks in the chiral limit where m/sub q/ = 0. This model-independent result is based on a physical picture of the nucleon as a soliton solution of the effective chiral Lagrangian of large-N/sub c/ QCD. The Skyrme model is then used to es… more
Date: July 1, 1988
Creator: Karliner, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Report on the workshop on new directions in soft x-ray near-threshold phenomena

Description: The ''Workshop on New Directions in Soft X-Ray Near-Threshold Phenomena'' was held at the Asilomar Conference Center in Pacific Grove, CA on March 1--4, 1987. It was attended by 59 scientists from 8 countries, representing 27 institutions. Major funding for the meeting was donated by L-Division of the Lawrence Livermore National Laboratory, who hosted and organized two previous workshops on photoabsorption and scattering in the soft x-ray energy range. Additional funding was provided by the Use… more
Date: July 1, 1988
Creator: Lindle, D.W. & Perera, R.C.C. (eds.)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Transverse energy and multiplicity distributions in collisions at 60 and 200 GeV per nucleon

Description: Transverse energy and multiplicity distributions from several CERN heavy ion experiments are presented. The large degree of nuclear cascading is shown. Nuclear stopping and the energy density reached in central collisions are discussed. 28 refs., 11 figs.
Date: July 1, 1988
Creator: Ritter, H. G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Three-dimensional MHD (magnetohydrodynamic) flows in rectangular ducts of liquid-metal-cooled blankets

Description: Magnetohydrodynamic flows of liquid metals in rectangular ducts with thin conducting walls in the presence of strong nonuniform transverse magnetic fields are examined. The interaction parameter and Hartmann number are assumed to be large, whereas the magnetic Reynolds number is assumed to be small. Under these assumptions, viscous and inertial effects are confined in very thin boundary layers adjacent to the walls. A significant fraction of the fluid flow is concentrated in the boundary layers… more
Date: July 1, 1988
Creator: Hua, T. Q.; Walker, J. S.; Picologlou, B. F. & Reed, C. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Geothermal studies at the University of Utah Research Institute

Description: The University of Utah Research Institute (WRI) is a self-supporting corporation organized in December 1972 under the Utah Non-Profit Corporation Association Act. Under its charter, the Institute is separate in its operations and receives no direct financial support from either the University of Utah or the State of Utah. The charter includes provisions for WRI to conduct both public and proprietary scientific work for governmental agencies, academic institutions, private industry, and individu… more
Date: July 1, 1988
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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MAGNETIC FIELD PENETRATION INTO THE HIGH TEMPERATURE SUPERCONDUCTOR. YBa/sub 2/Cu/sub 3/O/sub 7/minus/x/

Description: The penetration depth of a magnetic field into a superconducting YBa/sub 2/Cu/sub 3/O/sub 7-x/ film was measured by polarized neutron reflection. The sample comprised an epitaxial film with the c-axis of its orthorhombic structure perpendicular to the film's surface. Measurements at 14 K showed that a magnetic field (parallel to the surface) penetrates into the surface over a depth of 1400 /angstrom/. 9 refs., 3 figs.
Date: July 1, 1988
Creator: Mansour, A.; Hilleke, R. O.; Felcher, G. P.; Laibowitz, R. B.; Chaudhari, P. & Parkin, S. S. P.
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Partner: UNT Libraries Government Documents Department
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Nonlinear tearing instabilities in tokamaks with locally flattened current profiles

Description: Nonlinear tearing stability is evaluated for current profiles which are linearly stabilized by flattening the current in the neighborhood of the rational surface. When marginally stable to the linear instability, these profiles remain unstable in the presence of a small but finite island. The growth of the island saturated only when the island reaches the width it would have attained in the absence of flattening. Implications are discused for proposed methods of tearing mode stabilization and f… more
Date: July 1, 1988
Creator: Reiman, A.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Electron pair production in p + Be and Ca + Ca collisions at the Bevalac

Description: We report on the measurements of direct electron pair production in p-Be interactions at 1.0, 2.1 and 4.9 GeV and Ca + Ca at 1.0 and 2.0 GeV/A. The distributions of invariant mass and p/sub t/ are presented along with the total cross section. We observe a structure in the invariant mass spectra at approximately 275 MeV for 2.0 and 4.9 GeV p + Be data. A rapid decrease in the p + Be total cross-section is observed between 2.1 and 1.0 GeV. Both observations are consistent with the interpretation … more
Date: July 1, 1988
Creator: Naudet, C.; Carroll, J.; Gordon, J.; Hallman, T.; Igo, G.; Kirk, P. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Alpha storage regime in high temperature sub-ignited D-T tokamaks

Description: Alpha particle parameters in sub-ignited D-T tokamaks like TFTR can be optimized in a high temperature ''alpha storage regime '' in which the alpha particle thermalization time /tau//sub ..cap alpha../ is long (approx.1.0 sec) and in which the alpha particle source rate S/sub ..cap alpha../ is enhanced due to a beam-target and beam-beam reactions (by a factor of approx.2-3). Near reactor-level alpha instability parameters ..beta../sub ..cap alpha../(0) approx. n/sub ..cap alpha../(0)/n/sub e/(O… more
Date: July 1, 1988
Creator: Zweben, S. J.; Furth, H. P.; Mikkelsen, D. R.; Redi, M. H. & Strachan, J. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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