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  • 1995-1999  (2)
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  • 1
    Digitale Medien
    Digitale Medien
    MULTIPHONON GIANT RESONANCES IN NUCLEI (1998)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Nuclear and Particle Science 48 (1998), S. 351-399 
    Details
    ISSN: 0163-8998
    Quelle: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Thema: Physik
    Notizen: Abstract We review the present knowledge of multiphonon giant resonances in nuclei. Theoretical concepts approaching the intrinsic structure and excitation mechanisms of multiphonon states are discussed. The available experimental results are summarized, including a brief description of applied techniques. This review emphasizes electromagnetic excitations of double dipole resonances. Open questions and possible routes toward a solution are addressed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1146/annurev.nucl.48.1.351
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  • 2
    Digitale Medien
    Digitale Medien
    Giant dipole resonance inA ∼ 40 hot nuclei from coincidence measurements (1995)
    Springer
    The European physical journal 352 (1995), S. 273-277 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 24.30.Cz ; 25.70.Gh
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The emission of high-energyγ-rays in the deexcitation of hot40Ca and39K nuclei formed in heavy-ion fusion reactions at excitation energyE x ∼ 90 MeV has been studied. The high energyγ-rays were measured in coincidence with evaporation residues or light charged particles. Theγ spectrum from the self-conjugated compound nucleus40Ca shows an appreciable yield suppression in the Giant Dipole Resonance (GDR) energy region with respect to the39K, due to isospin selection rules in the dipoleγ-decay. The spectral line shapes of theγ spectra are well reproduced by using a statistical code which treats explicitly the isospin quantum number in evaluating level densities and transmission coefficients. The GDR parameters determined from the present coincidence measurements are in good agreement with the systematic in theA ∼ 40 mass region at lower bombarding energy based on the analysis of inclusive spectra.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01289500
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