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  • Artikel: DFG Deutsche Nationallizenzen  (2)
  • 13.40.Fn  (1)
  • 21.60. Jz  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Low energy orbital magnetic dipole excitations of heavy nonspherical nuclei (1991)
    Springer
    The European physical journal 339 (1991), S. 97-109 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 21.60. Ev ; 21.60. Jz ; 27.70.+q
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract To clarify the physical nature of the orbital magnetic dipole excitations discussed widely in the past few years, a semiclassical model is presented and the nuclei156Gd and164Dy are investigated microscopically. The semi-classical model involves a consistent treatment of vibrational and rotational degrees of freedom; the microscopic results are obtained in quasiparticle-random-phase approximation (QRPA) with a realistic effective interaction. The results disagree with the picture of scissors modes or rotational vibrations.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01282938
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
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  • 2
    Digitale Medien
    Digitale Medien
    Pions in the light-cone nucleon and electromagnetic form factors (1994)
    Springer
    The European physical journal 349 (1994), S. 59-64 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 12.40.Aa ; 13.40.Fn
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The light-cone Fock-state decomposition of the nucleon involves pion-quark core (π′N′ andπ′Δ′) components. The size of the quark core is at present of special importance for the analysis of the onset of colour transparency in the A(e,e′p) reactions. With the light-coneNπ′N′ andNπ′Δ′ vertex functions deduced from experimental data on high-energy proton fragmentation into nucleons and isobars, we evaluate the effect of the pionic cloud on the electromagnetic form factors of nucleons. We find the quark core radius to be about 10% smaller than the nucleon's radius. Analysis of the renormalization of the total nucleon-nucleon cross section for the presence of the pionic cloud suggests a similar core radius.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01296334
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
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