TY  - JOUR
AU  - Soderstrom, P. A. et al
AU  - Montaner-Piza, A.
PY  - 2013
DA  - 2013//
TI  - Shape evolution in Ru-116,Ru-118: Triaxiality and transition between the O(6) and U(5) dynamical symmetries
T2  - Phys. Rev. C
JO  - Physical Review C
SP  - 024301
EP  - 10pp
VL  - 88
IS  - 2
PB  - Amer Physical Soc
AB  - 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.
SN  - 0556-2813
UR  - https://doi.org/10.1103/PhysRevC.88.024301
DO  - 10.1103/PhysRevC.88.024301
LA  - English
N1  - WOS:000322723900001
ID  - Soderstrom+Montaner-Piza2013
ER  -