High-spin states in ${}_{}{}^{145}{}_{}{}^{}\mathrm{Pm}$ have been studied with TESSA3 operating at NSF Daresbury, through the ${}_{}{}^{134}{}_{}{}^{}\mathrm{Xe}$${(}^{15}$N,4n) compound nucleus reaction using a solid xenon target. To determine conversion coefficients and properties of low-spin excitations electron-γ and γ-γ coincidences have been measured following the ${}_{}{}^{146}{}_{}{}^{}\mathrm{Nd}$(d,3n) reaction. An extended level scheme of ${}_{}{}^{145}{}_{}{}^{}\mathrm{Pm}$ is proposed and interpreted in terms of single-particle excitations with collective quadrupole and octupole vibrations coupled to them. © 1996 The American Physical Society.

• Received 22 May 1996

DOI:https://doi.org/10.1103/PhysRevC.54.2264