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  • 1
    Electronic Resource
    Electronic Resource
    Four-dimensional boson field theory. II. Existence (1986)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 27 (1986), S. 2379-2393 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: The existence of the continuum, quantum field theory found by Baker and Johnson [G. A. Baker, Jr. and J. D. Johnson, J. Phys. A 18, L261 (1985)] to be nontrivial is proved rigorously. It is proved to satisfy all usual requirements of such a field theory, except rotational invariance. Currently known information is consistent with rotational invariance however. Most of the usual properties of other known Euclidean boson quantum field theories hold here, in a somewhat weakened form. Summability of the sufficiently strongly ultraviolet cutoff bare coupling constant perturbation series is proved as well as a nonzero radius of convergence for high-temperature expansions of the corresponding continuous-spin Ising model. The description of the theory by these two series methods is shown to be equivalent. The field theory is probably not asymptotically free.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.527009
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  • 2
    Electronic Resource
    Electronic Resource
    Mathematical model for the calculation of magnetization in anisotropic materials (1986)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 59 (1986), S. 3815-3819 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A three-dimensional formalism has been developed that can be used to compute the anhysteretic magnetization of anisotropic materials. The formalism represents a statistically based mean-field model in which the material is characterized as an ensemble of pseudodomains. The magnetization of the ensemble is obtained using a Maxwell–Boltzmann distribution with an energy dependence that includes both interactive and anisotropic terms. The model is applied to a single crystal of cobalt and excellent agreement with experimental data is obtained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.336721
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  • 3
    Electronic Resource
    Electronic Resource
    Electrohydraulic fatigue apparatus for testing in ultrahigh vacuum and controlled environments (1986)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 57 (1986), S. 2854-2858 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A closed-loop computer-interfaced electrohydraulic fatigue apparatus was constructed and installed in an ultrahigh-vacuum (UHV) scanning Auger microprobe for the study of environmental effects on fatigue. Load- or (total or plastic) strain-controlled fatigue tests can be performed in the push–pull mode between atmospheric pressure and UHV (below 6.5×10−8 Pa) under controlled gaseous environments. The specimen mounting allows access of an electron beam for Auger analysis, an ion gun for sputtering and a secondary-electron detector for imaging. There have been several important improvements made in the electronics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1139055
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  • 4
    Electronic Resource
    Electronic Resource
    Lightning return stroke. A numerical calculation of the optical radiation (1986)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 29 (1986), S. 2736-2741 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A numerical model for a lightning channel that includes a multigroup treatment of radiative transport was used to calculate the optical output corresponding to an assumed current waveform. The calculation compares well with the experimental data that are available. The time development of the temperature, pressure, density, and electrical conductivity profiles across the channel were investigated, as was the energy balance for the process.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.865514
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