Bohr Hamiltonian with different mass parameters applied to band structures of Eu isotopes built on Nilsson orbitals

Abstract

The band structure of the proton-odd nuclei 153,155Eu, built on Nilsson orbitals, is investigated within the framework of a recently developed extended Bohr Hamiltonian model. The relative distance between spherical orbitals is taken into account by considering single-particle energies as a parameter which changes with increasing neutron number. Energy levels of each band and B(E2) values inside the ground-state band are calculated and compared with the available experimental data. Thus, more comprehensive information on the structure of deformed nuclei can be obtained by studying the rotation-vibration spectra of odd nuclei built on Nilsson single-particle orbitals. © Indian Academy of Sciences.