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  • 1
    Electronic Resource
    Electronic Resource
    E0 andM1 excitations in56Ni (1991)
    Springer
    The European physical journal 340 (1991), S. 111-117 
    Details
    ISSN: 1434-601X
    Keywords: 21.10.-k ; 21.60.-n ; 24.30.-v
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The centroid energy and the decay width of the giant monopole resonance in the unstable nucleus56Ni are predicted. The resulting 0+, ΔT=0 strength distribution, including the escape and the spreading width, displays a structure centered at around 18 MeV with the total width of about 5 MeV. We also study theM1 response in this nucleus which shows a strong isovector transition at 9.6 MeV and a weak isoscalar one at 7.5 MeV.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01303822
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    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
    Keywords: 12.40.Aa ; 13.40.Fn
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01296334
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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