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HIGH-ENERGY-PHYSICS EXPERIMENTS WITH POLARIZED TARGETS

Description: If we are to do a workmanlike job of studying the strong interactions it is imperative that we have knowledge of the spin dependence of the forces. This implies that polarization experiments are essential. Already Bareyre, Bricman, Stirling and Villet have shown that pion-proton polarization experiments should be interpreted as indicating two new resonances not previously seen by other methods. The present-day approach to determining detailed pion-proton scattering amplitudes is to use measured… more
Date: December 1, 1966
Creator: Chamberlain, Owen
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Acoustic emission energy to pulse height converter

Description: An enengy-to-pulse-height converter was developed for use in acoustic emission testing. This instrument accepts an amplified signal from a piezoelectric crystal and generates a pulse whose amplitude is propontional to either the energy or width of the input signal. Either linear or logarithmic responses can be selected. Theory, circuit design, and performance specifications have been determined, based on calculations and measurements. (auth)
Date: December 18, 1973
Creator: Speller, B. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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High energy behavior of fermion--meson and meson--meson scattering in a supersymmetric field theory

Description: A review of the general methods of high energy calculations within the framework of field theory is given. These include Feynman parameter methods, the infinite momentum frame, and Mellin transform methods. A general discussion of supersymmetry is also presented. The basic aspects of the Wess-Zumino model are given. This includes a proof of renormalizability through one-loop, and a derivation of the Feynman rules. The general supersymmetry algebra is presented. The method of generating represen… more
Date: December 1, 1977
Creator: Opoien, J.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Model tests of OTEC-1: test of HMB with and without cold water pipes

Description: In early 1977, ERDA began an extensive study of various factors which could effect the early design and deployment of OTEC-1, a test platform for evaluation of one megawatt (1 MW) OTEC heat exchangers. The platform was to consist of the Hughes Mining Barge (HMB) and a 3000 foot deep cold water pipe (CWP). One of the factors to be considered was the motions of the HMB and the motions, loads and stresses of the CWP. Several theoretical methods, including one developed at HYDRONAUTICS, Incorporate… more
Date: December 1, 1977
Creator: Sheldon, L. R.; Barr, R. A. & O'Dea, J. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Higher twist contributions to lepton-pair production and other QCD processes

Description: A general discussion of the calculations and phenomenological consequences of power-law suppressed QCD processes is given with emphasis on tests in massive lepton pair production. Absolutely normalized predictions are given for the leading twist (transverse current) and higher twist (longitudinal current) contributions to the meson structure function in the region of large x.
Date: December 1, 1982
Creator: Brodsky, S. J.; Berger, E. L. & Lepage, G. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Restrictions on TWT Helix Voltage Ripple for Acceptable Notch Filter Performance

Description: An ac ripple on the helix voltage of the 1-2 GHz TWT's creates FM sidebands that cause amplitude and phase modulation of the microwave TWT output signal. A limit of 16 volts peak-to-peak is required for acceptable superconducting notch filter performance.
Date: December 1, 1984
Creator: Hyslop, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Kaon decay amplitudes using staggered fermions

Description: A status report is given of an attempt, using staggered fermions to calculate the real and imaginary parts of the amplitudes for K ..-->.. ..pi pi..,. Semi-quantitative results are found for the imaginary parts, and these suggest that epsilon' might be smaller than previously expected in the standard model.
Date: December 1, 1986
Creator: Sharpe, S.R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Theoretical Atomic Physics code development IV: LINES, A code for computing atomic line spectra

Description: A new computer program, LINES, has been developed for simulating atomic line emission and absorption spectra using the accurate fine structure energy levels and transition strengths calculated by the (CATS) Cowan Atomic Structure code. Population distributions for the ion stages are obtained in LINES by using the Local Thermodynamic Equilibrium (LTE) model. LINES is also useful for displaying the pertinent atomic data generated by CATS. This report describes the use of LINES. Both CATS and LINE… more
Date: December 1, 1988
Creator: Abdallah, J. Jr. & Clark, R.E.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Introduction to conformal field theory and string theory

Description: These lectures are meant to provide a brief introduction to conformal field theory (CFT) and string theory for those with no prior exposure to the subjects. There are many excellent reviews already available, and most of these go in to much more detail than I will be able to here. 52 refs., 11 figs.
Date: December 1, 1989
Creator: Dixon, L.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Nuclear decay studies far-from-stability

Description: Nuclear decay studies far-from-stability are performed not merely to characterize new isotopes, but to establish an experimental footing for improving our theoretical understanding of nuclear structure and decay. Although progress has been made in explaining low-lying level structure for a broad range of nuclei, transition probabilities are not yet quantitatively understood. The ability to understand nuclei far-from-stability is important to astrophysics for extending r- and s-process calculati… more
Date: December 1, 1989
Creator: Firestone, R.B.; Nitschke, J.M.; Wilmarth, P.A.; Vierinen, K.S.; Chasteler, R.M.; Gilat, J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The status of strange meson spectroscopy

Description: The present status of strange meson spectroscopy is reviewed with emphasis on the results obtained with the LASS spectrometer at SLAC. The systematics of the level structure are discussed with respect to quark model expectations, and the impact of the proposed KAON Factory on the future of the subject considered. 12 refs., 14 figs.
Date: December 1, 1990
Creator: Dunwoodie, W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Diffusive transport enhancement by isolated resonances and distribution tails growth in hadronic beams

Description: The escape rates and evolution of a distribution of particles are considered for a 2-D model of transverse motion of particles in hadronic storage rings, when nonlinear resonances and external diffusion are present. Dynamic enhancement of diffusion inside separatrices can develop under a certain geometry of resonance oscillations and relatively wide resonances, leading to the fast growth of distribution tails and escape rates. The phenomenon is absent in 1-D. 10 refs., 4 figs.
Date: December 6, 1990
Creator: Gerasimov, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Is there a hard gluonic contribution to the first moment of g sub 1

Description: We show that the size of the hard gluonic contribution to the first moment of the proton's spin-dependent structure function g{sub 1} is entirely a matter of the convention used in defining the quark distributions. If the UV regulator for the spin-dependent quark distributions respects the gauge invariance of Green's functions (allows shifts of loop momenta) and respects the analyticity structure of the unregulated distributions, then the hard gluonic contribution to the first moment of g{sub 1… more
Date: December 19, 1990
Creator: Bodwin, G.T. (Argonne National Lab., IL (USA)) & Qiu, Jianwei (State Univ. of New York, Stony Brook, NY (USA). Inst. for Theoretical Physics)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Proton-proton and proton-antiproton elastic scattering at high energies: Theory, phenomenology, and experiment

Description: This is a brief review of the progress in the understanding, during the past twenty years, of hadronic elastic scattering near the forward direction at high energies. On the basis of quantum gauge field theories, the Pomeron is found to be a branch cut above 1. Using the physical picture that this result implies, phenomenology for proton-proton and antiproton-proton elastic scattering is constructed. Two noteworthy features are that, at high energies, both the total cross section and the ratio … more
Date: December 31, 1990
Creator: Wu, Tai Tsun
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Over-the-road tests of nuclear materials package response to normal environments

Description: In support of the development of American National Standards Institute standards for the transport of radioactive materials, Sandia has a program to characterize the normal transport environment. This program includes both analytical modeling of package and trailer responses, and over-the-road tests to measure those responses. This paper presents the results of a series of over-the-road tests performed using Chem-Nuclear equipment in the Barnwell, SC, area. The test events included a variety of… more
Date: December 1, 1991
Creator: Gwinn, K.W.; Glass, R.E. & Edwards, K.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Inelastic Electron Scattering From Surfaces. Progress Report for Second Grant Year

Description: This report contains highlights of accomplishments of the past year, for the University of California, Irvine and the University of Wisconsin, Milwaukee collaboration on surface excitations, and their interactions with low energy electrons. In addition, we present a summary of future research to be carried out in the coming grant year.
Date: December 31, 1991
Creator: Tong, S. Y. & Mills, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Narrow structure in {Lambda}d scattering near the {Sigma} threshold ({sub {Sigma}}{sup 3}He states)

Description: A separable-potential, Faddeev-type calculation of {Lambda}-deuteron scattering near the threshold for {Sigma} production is shown to produce structure (a resonance peak) in the cross section which lies below the {Sigma} threshold for two different YN ({Lambda}N-{Sigma}N coupled-channel) potential models. In one case the {Sigma}NN eigenvalue corresponds to a pole which lies below threshold (bound) and in the second case the poles lies above the threshold.
Date: December 31, 1991
Creator: Gibson, B. F. & Afnan, I. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Resonant and non-resonant magnetic scattering

Description: The tunability and the polarization of synchrotron radiation open upon new possibilities for the study of magnetism. Studies on magnetic materials performed at the National Synchrotron Light Source are reviewed, and thy fall into four areas: structure, evolution of magnetic order, separation of L and S, and resonance effects. In the vicinity of atomic absorption edges, the Faraday effect, magnetic circular dichroism, and resonant magnetic scattering are all related resonance effects which measu… more
Date: December 31, 1991
Creator: McWhan, D. B.; Hastings, J. B.; Kao, C. C. & Siddons, D. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Ringwaldmania reconsidered

Description: The exciting possibility that anomalous baryon and lepton number violation might be observable at the next generation of supercolliders is suggested by an instanton calculation due to Ringwald and Espinoa. Here, the current controversial status of these claims is discussed, and progress on several fronts is described.
Date: December 31, 1991
Creator: Mattis, M. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Techniques in meson spectroscopy

Description: This report contains lectures on the following topics: the quark model and beyond using quantum chromodynamics; analysis of formation reactions; energy dependence of the partial wave amplitudes; where the data for the t-matrix analysis comes from; and coupled channel analysis of isoscalar mesons.
Date: December 31, 1991
Creator: Longacre, R. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Hadron dynamics in high-energy pion-nucleus scattering

Description: It is argued that pion-nucleus scattering at high energy (above 300 MeV) is likely to be easier to interpret than it has been at lower energies where the {Delta}{sub 33} resonance dominates. We establish this by examining the relative importance of various dynamic ingredients of scattering theory for high-energy pions and comparing different versions of the theory: a ``model-exact`` microscopic optical model and an eikonal approximation. For nuclei as heavy as Ca, the eikonal theory is an excel… more
Date: December 31, 1992
Creator: Johnson, M. B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A tevatron collider beauty factory. [Final report, 1980--1992]

Description: This document which is labeled a final report consists of several different items. The first is a proposal for a detector to be developed for beauty physics. The detector is proposed for the Fermilab Tevatron, and would be designed to measure mixing reactions, rare decay modes, and even CP violation in hadron collider beauty production. The general outline of the work proposed is given, and an estimate of the time to actually design the detector is presented, along with proposed changes to the … more
Date: December 31, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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