Shape evolution and coexistence in neutron-deficient Nd and Sm nuclei
Shape evolution and coexistence in neutron-deficient Nd and Sm nuclei
The evolution of shapes and low-energy shape coexistence is analyzed in neutron-deficient Nd and Sm nuclei, using a five-dimensional quadrupole collective Hamiltonian (5DCH). Deformation energy surfaces, calculated with the relativistic energy density functional PC-PK1 and a separable finite-range pairing interaction, exhibit a transition from spherical shapes near $N=80$, to $\ensuremath{\gamma}$-soft …