Isovector multiphonon excitations in near spherical nuclei
  The lowest isoscalar and isovector quadrupole and octupole excitations in near spherical nuclei are studied within the the proton-neutron version of the interacting boson model including quadrupole and octupole bosons (sdf-IBM-2). The main decay modes of these states in near spherical nuclei are discussed. 
Nadya A. Smirnova, Norbert Pietralla, Takahiro Mizusaki, Piet Van   Isacker