https://doi.org/10.1051/epjconf/201610703001
Quasiparticle-phonon model and quadrupole mixed-symmetry states of 96Ru
1 Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences
2 Institut für Kernphysik, Technische Universität, Darmstadt
3 GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
a e-mail: stoyanov@inrne.bas.bg
b e-mail: pietralla@ikp.tu-darmstadt.de
Published online: 19 January 2016
The structure of low-lying quadrupole states of 96Ru was calculated within the Quasiparticle-Phonon Model. It is shown that symmetric and mixed-symmetry properties manifest themselves via the structure of the excited states. The first 2+ state is collective and neutron and proton transition matrix elements Mn and Mp are in-phase, while the neutron and proton transition matrix elements Mn and Mp have opposite signs for the third 2+ state. This property of the third 2+ state leads to a large M1 transition between the first and third 2+ states. It is an unambigous demonstration of the mixed-symmetry nature of the third 2+ state. The structure of the first 1+ state is calculated. The state is a member of the two-phonon multiplet generated by the coupling of the [21+]QRPA and the [22+]QRPA states.
© Owned by the authors, published by EDP Sciences, 2016
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.