Abstract
The structure of the low-lying states in the odd- and even-mass Ru isotopes is studied in the framework of two algebraic models. The even-mass Ru nuclei are first described within the interacting boson model 1 (IBM-1). The output of these calculations was then used to calculate the odd- isotopes within the interacting boson-fermion model 1 (IBFM-1), where a coupling of the odd neutron to the even-even core is considered. The level energies and transition probabilities calculated in the present work are tested against the experimental data. One-nucleon transfer spectroscopic factors as well as electromagnetic moments were also calculated for the odd- Ru and compared to the experimental values. The transitional character of the isotopes is studied. Most of the low-lying positive-parity states in the odd- Ru nuclei below 2 MeV are interpreted on the basis of and configurations. The role of the orbital in the nuclear structure of the odd-mass Ru nuclei at low energies is also studied. The negative-parity states are interpreted as excitations coupled to the core. The evolution of the IBM-1 and IBFM-1 parameters is discussed.
4 More- Received 15 February 2016
DOI:https://doi.org/10.1103/PhysRevC.93.044308
©2016 American Physical Society