Quasiparticle phonon model description of low-energy states in 152Pr.

Delayed γ-ray and conversion-electron spectroscopy is performed on A=152 fission fragments, at the Lohengrin spectrometer of the Institut Laue-Langevin, providing a new decay scheme for 152Pr. The quasiparticle phonon model, combined with the particle-rotor model, which allows octupole correlations and Coriolis mixing to be taken into account, is applied to analyze its low-energy structure. The main configurations are found to be (π3/2[422]⊗ν5/2[642])1+ for the isomer and (π3/2[541]⊗ν3/2[521])3+ for the ground state. [ABSTRACT FROM AUTHOR]