Structural evolution in A100 nuclei within the mapped interacting boson model based on the Gogny energy density functional

K. Nomura, R. Rodríguez-Guzmán, and L. M. Robledo
Phys. Rev. C 94, 044314 – Published 17 October 2016

Abstract

The structure of even-even neutron-rich Ru, Mo, Zr, and Sr nuclei in the A100 mass region is studied within the interacting boson model (IBM) with microscopic input from the self-consistent mean-field approximation based on the Gogny-D1M energy density functional. The deformation-energy surface in the quadrupole deformation space (β,γ), computed within the constrained Hartree–Fock–Bogoliubov framework, is mapped onto the expectation value of the appropriately chosen IBM Hamiltonian with configuration mixing in the boson condensate state. The mapped IBM Hamiltonian is used to study the spectroscopic properties of Ru98114, Mo96112, Zr94110, and Sr92108. Several cases of γ-soft behavior are predicted in Ru and Mo nuclei while a pronounced coexistence between strongly prolate and weakly oblate deformed shapes is found for Zr and Sr nuclei. The method describes well the evolution of experimental yrast and nonyrast states as well as selected B(E2) transition probabilities.

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  • Received 15 June 2016
  • Revised 6 September 2016

DOI:https://doi.org/10.1103/PhysRevC.94.044314

©2016 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

K. Nomura1,2, R. Rodríguez-Guzmán3, and L. M. Robledo4

  • 1Physics Department, Faculty of Science, University of Zagreb, HR-10000 Zagreb, Croatia
  • 2Center for Computational Sciences, University of Tsukuba, Tsukuba 305-8577, Japan
  • 3Physics Department, Kuwait University, 13060 Kuwait, Kuwait
  • 4Departamento de Física Teórica, Universidad Autónoma de Madrid, E-28049 Madrid, Spain

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Issue

Vol. 94, Iss. 4 — October 2016

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