2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/81398Comprehensive evidences of the SU(3) limit in the spdf interacting boson model, a dynamical symmetry describing octupole vibration in rotational nucleus, are found in the spectrum, E2 and E1 transition rates, and relative intensities in $^{158}$Gd. This gives a good example of rotational nucleus with octupole vibration in rare-earth region.7 pages, 1 figureNuclear ExperimentNuclear Theorytext