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  • 1990-1994  (2)
  • 1980-1984  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Electrical engineering 67 (1984), S. 75-81 
    ISSN: 1432-0487
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Description / Table of Contents: Übersicht In der Arbeit wurde die Bubnov-Galerkin-Methode in Verbindung mit der Methode der Variablentrennung zur Ermittlung der Verluste, die durch Wirbelströme und elektrodynamische Kräfte in zylindrischen Segmenten (Joffe-Schienen) hervorgerufen wurden, verwendet. Die Segmente befinden sich in einem homogenen magnetischen Querfeld, das sinusoidal veränderlich mit der Zeit ist. Die Berechnung wurde iterativ mit einem Digitalrechner vorgenommen. Diagramme der Verluste und Kräfte werden angegeben.
    Notes: Contents In the paper, eddy current losses and electrodynamic forces in cylindrical segments (Joffe's conductor) placed in a transverse homogeneous magnetic field sinusoidally changing with time were determined by means of the Bubnov-Galerkin method coupled with the separation of variables. Numerical computation served as a basis for plotting both real power losses and electrodynamic forces.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 76 (1994), S. 7750-7756 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Results of spectroscopic measurements of laser-induced plasma under welding conditions are presented. Welding was performed with the use of a continuous-wave CO2 laser operating at a power of 2 kW. Argon or helium was used as a shielding gas. The welding metal was stainless steel or titanium. Emission spectra from plasma were measured with a spectrograph and 1254 Silicon Intensified Target detector connected to the optical multichannel analyzer. The plasma electron temperatures were determined from the relative intensities of spectral lines and the electron densities were determined either from Stark broadening of atomic line or the absolute intensity of ionic line. The distributions of the electron temperature and density over the metal surface are presented and the influence of a shielding gas on plasma parameters is demonstrated. The plasma parameters obtained were used to calculate the absorption of a laser beam in the plasma over the metal surface. No significant absorption was found in our experimental conditions. © 1994 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 69 (1991), S. 3480-3484 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Decay and recovery of laser-sustained argon plasma have been studied both experimentally and theoretically. Temperature distributions at various phases of the discharge were determined experimentally from the continuum emission coefficient. A quasi-two-dimensional cylindrical model has been employed to describe the observed plasma evolution. It was found that the model well described plasma evolution that was observed in the experiment.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 318 (1984), S. 49-65 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The multiphonon method based onβ andγ phonons is tested in a simple model allowing an exact solution for a many body fermion system where pairing and quadrupole forces are acting. The properties exhibiting the anharmonicities of the lowest-lying vibrational states of positive parity are nicely reproduced by this method.
    Type of Medium: Electronic Resource
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