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

A. Zilges·S. Volz·M. Babilon·T. Hartmann·P. Mohr·K. Vogt
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Abstract

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.

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A. Zilges, S. Volz, M. Babilon, T. Hartmann, P. Mohr, K. Vogt. 2002-08-09. Concentration of electric dipole strength below the neutron separation energy in N = 82 nuclei. https://doi.org/10.1016/s0370-2693(02)02309-2

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