High-Spin Structure of Neutron-Rich Dy Isotopes

Abstract

In view of recent experimental progress on production and spectroscopy of neuton-rich isotopes of Dy with mass number A = 166 and 168, we have made theoretical investigations on the structure of high spin states of ^164−170Dy isotopes in the cranked Hartree-Fock-Bogoliubov (CHFB) theory employing a pairing + quadrupole + hexadecapole model interaction. It is found that the most deformed isotope in the ground state is the one with neutron number N = 102. Also, with the increase of neutron number the rotation alignment of the proton orbitals dominates the structure at high spins, which is clearly reflected in the spin dependence of the rotational g -factors.