Low-lying spectra and E2 transition rates in 160–170Er isotopes in the interaction boson model

Abstract

Spectra and E2 transition rates for the 160–170Er isotopes are studied in the framework of the interaction boson model. A schematic Hamiltonian able to describe their spectra and B(E2) transition is used. It is found that the 160–170Er isotopes are in the transition from the vibrational limit to rotational limit.