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  • 1980-1984  (6)
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Materialart
Erscheinungszeitraum
Jahr
  • 1
    Digitale Medien
    Digitale Medien
    Application of the incoming wave boundary condition to16O+16O and12C+12C elastic scattering (1980)
    Springer
    The European physical journal 294 (1980), S. 261-276 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The elastic scattering of12C+12C and16O+16O has been studied in the framework of an incoming wave boundary condition model. Different logarithmic derivatives for the incoming waves have been tested and their effects investigated with the help of Fourier analyses. It is shown that a logarithmic derivative obtained from a JWKB approximation leads to strong absorption of the low partial waves while a logarithmic derivative constant for all partial waves causes reflections. These reflections are necessary to describe the high energy elastic scattering of12C+12C. The fits thus obtained with shallow real potentials are comparable to those obtained with deep folding potentials. It is shown that not the lowest partial waves, but those within a window just below the grazing angular momentum are most important for the higher energy12C+12C angular distributions.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01438164
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  • 2
    Digitale Medien
    Digitale Medien
    Charge-drift and dispersion in deep inelastic collisions in an equilibrium model (1980)
    Springer
    The European physical journal 294 (1980), S. 351-352 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract First and second moments of the charge distribution for the reaction86K +166Er have been calculated assuming a thermal equilibrium model. The moments are calculated microscopically on the basis of a realistic two-center shell model as a function of distance as well as of excitation energy. The experimentally observed constancy of the first moments is reproduced.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01434143
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  • 3
    Digitale Medien
    Digitale Medien
    Cranking-HFB calculations of the yrastline for the nuclei232Th,234,236,238U,248Cm (1981)
    Springer
    The European physical journal 303 (1981), S. 131-134 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The CHFB method is applied to actinide nuclei. The calculated neutron alignment agrees with the experimental data, but for the proton alignment discrepancies are observed. The reliability of our approach and the information from measured odd-mass-actinide spectra are discussed. It is concluded that the experimental even-even spectra might have to be interpreted as bands in which the lowest excitation of two (651, 3/2) protons is not populated.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01420270
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  • 4
    Digitale Medien
    Digitale Medien
    Multipole pair fields at finite temperature (1983)
    Springer
    The European physical journal 313 (1983), S. 133-135 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Finite temperature HFB calculations have been performed in a model using the Surface Delta Interaction as the generating two body force. TheT=0 as well as theT=1 multipole pair fields are studied at various temperatures and different angular momenta. Higher multipole modes appear not only to be more resistant against increasing angular frequency but also against increasing temperature in comparison with the standard monopole pairing mode.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02115851
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  • 5
    Digitale Medien
    Digitale Medien
    Influence of strongly coupled inelastic excitations on the optical potential for12C+12C (1982)
    Springer
    The European physical journal 305 (1982), S. 179-183 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The contributions of some of the strongly coupled collective excitations in12C+12C to the heavy ion optical potential have been explicitly obtained by calculating the exact Green's function for this problem. The resulting nonlocal heavy ion potential and the trivially equivalent local potential are calculated and theirJ- andE-dependence are discussed. It is shown that the strong direct excitations contribute significantly to the absorptive part of the heavy ion potential in the surface region.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01415027
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  • 6
    Digitale Medien
    Digitale Medien
    Polarization effects for elastic and inelastic scattering with an adiabatic-propagator approximation (1983)
    Springer
    The European physical journal 314 (1983), S. 317-322 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The effective coupling potentials derived from Feshbach's projection formalism can be significantly simplified with an adiabatic approximation in the propagator. For the diagonal and non-diagonal correction terms we derive perturbation series that lead to prominent shifts in both excitation energies and transition probabilities. We give a comparison between the conventional DWBA treatment and our modified analysis for16O+16O scattering.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01412928
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