Lifetime measurements in the ground-state band in Pd-104

Abstract

Lifetimes and reduced transition probabilities were determined in the ground-state band in Pd-104 up to the 12(+) state employing the recoil distance Doppler-shift method. Excited states were populated via the fusion-evaporation reaction Zr-96(C-12, 4n)Pd-104 at 55 MeV. The B(E2; 2(i)(+) -> O-g+s.(+)) value deviates from previous evaluated values obtained by Coulomb excitation and electron scattering. The transition strengths for higher-lying states were obtained for the first time, closing a gap in the medium-mass Pd isotope chain. Large-scale shell-model calculations were performed employing the SR88MHJM Hamiltonian along the isotope chain Pd96-106 for even-even nuclei and for high-spin states up to 26(+) in Pd-104

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