Doublet Octupole Bands in Neutron-Rich 140,141Xe
High-spin level structures of neutron-rich 140Xe and 141Xe nuclei have been reinvestigated by analyzing the triple and four-fold γ coincidence data obtained from the spontaneous fission of 252Cf. Several new levels and transitions are identified in both nuclei. The doublet octupole bands are observed in 140Xe and expanded in 141Xe. The characteristics of octupole deformation and octupole correlations are discussed in both nuclei.