Algebraic approach to the structure of the low-lying states in A100 Ru isotopes

S. Kisyov, D. Bucurescu, J. Jolie, and S. Lalkovski
Phys. Rev. C 93, 044308 – Published 12 April 2016

Abstract

The structure of the low-lying states in the odd- and even-mass A100 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-A 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-A 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-A Ru nuclei below 2 MeV are interpreted on the basis of νd5/2 and νg7/2 configurations. The role of the νs1/2 orbital in the nuclear structure of the odd-mass Ru nuclei at low energies is also studied. The negative-parity states are interpreted as νh11/2 excitations coupled to the core. The evolution of the IBM-1 and IBFM-1 parameters is discussed.

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  • Received 15 February 2016

DOI:https://doi.org/10.1103/PhysRevC.93.044308

©2016 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

S. Kisyov1,2,*, D. Bucurescu2, J. Jolie3, and S. Lalkovski1,†

  • 1Faculty of Physics, University of Sofia “St. Kliment Ohridski,” 1164 Sofia, Bulgaria
  • 2Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering (IFIN-HH), P.O. Box MG-6, Bucharest-Magurele, Romania
  • 3IKP, University of Cologne, Zülpicher Strasse 77, D-50937 Köln, Germany

  • *stanimir.kisyov@phys.uni-sofia.bg
  • Present address: Department of Physics, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom.

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Issue

Vol. 93, Iss. 4 — April 2016

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