Shape phase transition and phase coexistence in odd Sm nuclei

Yu Zhang, Liaoning Normal University
Feng Pan, Liaoning Normal University
Yu Xin Liu, Peking University
Yan An Luo, Nankai University
J. P. Draayer, Louisiana State University


The shape phase transition and the associated phase coexistence in the odd Sm isotopes are investigated. Through analyzing two-neutron separation energies and the low-lying spectra of the odd Sm isotopes, it is found that the spherical to axially deformed shape phase transition does occur in the odd Sm nuclei just as their neighboring even Sm nuclei. The phase coexistence in 151Sm, which lies close to the critical point, is revealed. © 2013 American Physical Society.