Artikel,

Concentration of electric dipole strength below the neutron separation energy in N=82 nuclei

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Physics Letters B, 542 (1-2): 43-48 (August 2002)
DOI: 10.1016/S0370-2693(02)02309-2

Zusammenfassung

The semi-magic nuclei Ba-138, Ce-140, and Sm-144 have been investigated in photon scattering experiments up to an excitation energy of about 10 MeV The distribution of the electric dipole strength shows a resonance like structure at energies between 5.5 and 8 MeV exhausting up to 1\% of the isovector E1 Energy Weighted Sum Rule. (C) 2002 Elsevier Science B.V. All rights reserved.

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