%0 Journal Article
%T Shape evolution in Ru-116,Ru-118: Triaxiality and transition between the O(6) and U(5) dynamical symmetries
%A Soderstrom, P. A. et al
%A Montaner-Piza, A.
%J Physical Review C
%D 2013
%V 88
%N 2
%I Amer Physical Soc
%@ 0556-2813
%G English
%F Soderstrom+Montaner-Piza2013
%O WOS:000322723900001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1552), last updated on Fri, 08 Nov 2013 11:12:01 +0000
%X Ru-116 and Ru-118 have been studied via beta-delayed gamma-ray spectroscopy of nuclei produced in fragmentation reactions at the Radioactive Ion-Beam Factory (RIBF) facility. Level schemes with positive-parity states up to spin J = 6 have been constructed. The results have been discussed in terms of the interacting boson model, the algebraic collective model, and total Routhian surfaces. We conclude that the very neutron-rich nuclei still show many features associated with triaxial gamma-soft nuclei, represented by the O(6) symmetry, but are approaching a spherical structure, the U(5) symmetry, with increasing neutron number towards the N = 82 shell closure. In Ru-118, hints of a shape transition in the ground state have been observed.
%R 10.1103/PhysRevC.88.024301
%U https://doi.org/10.1103/PhysRevC.88.024301
%P 024301-10pp