Two-neutron transfer in Sn isotopes beyond theN=82shell closure

The Z=82 shell closure in neutron-deficient Pb isotopes

Recent mass measurements show a substantial weakening of the binding energy difference δ2p(Z,N) = E(Z − 2, N)− 2E(Z,N) +E(Z + 2, N) in the neutron-deficient Pb isotopes. As δ2p is often attributed to the size of the proton magic gap, it might be speculated that reduction in δ2p is related to a weakening of the spherical Z = 82 shell. We demonstrate that the observed trend is described quantitat...

PRODUCTION OF NEUTRON-RICH Ca ISOTOPES IN TRANSFER-TYPE REACTIONS

Structure of neutron-rich Ar isotopes beyond N = 28.

Results from the gamma-ray spectroscopy of {47,48}Ar exemplifying new limits of sensitivity for characterizing neutron-rich nuclei at energies around the Coulomb barrier are presented. The present results, along with interacting shell model calculations, highlight the role of cross-shell excitations and indicate the presence of a nonaxial deformation in 48Ar.

Effects of phonon - phonon coupling on low - lying states in neutron - rich Sn isotopes

Starting from an effective Skyrme interaction we present a method to take into account the coupling between oneand two-phonon terms in the wave functions of excited states. The approach is a development of a finite rank separable approximation for the quasiparticle RPA calculations proposed in our previous work. The influence of the phonon-phonon coupling on energies and transition probabilitie...

Generalized seniority scheme in light Sn isotopes

The yrast generalized seniority states are compared with the corresponding shell model states for the case of the Sn isotopes 104−112Sn. For most of the cases the energies agree within 100 keV and the overlaps of the wave functions are greater than 0.7 In the last years the region of light Sn isotopes has been intensively investigated both from experimental and theoretical perspectives. The mai...