Structure of 0+ excitations in the mass A100 region: 02+ bands in Sr98 and Zr100

W. Urban, T. Rząca-Urban, J. Wiśniewski, I. Ahmad, A. G. Smith, and G. S. Simpson
Phys. Rev. C 99, 064325 – Published 21 June 2019

Abstract

02+ bands in Sr98 and Zr100, populated in spontaneous fission of Cm248 and Cf252, have been studied using the Eurogam2 and Gammasphere arrays. Phenomenological classification of excited 0+ levels in even-even nuclei of the A100 region into four categories is presented and an interpretation for each category is proposed. Highly deformed 01+ ground states and low-energy 02+ levels in both nuclei are probably due to the 2p-2h excitation of two neutrons from the 9/2+[404] extruder to the low-Ω prolate and the 11/2[505] oblate orbitals originating from the h11/2 shell, respectively. Candidates for 0+, β vibrational states in A100 region are suggested at N>60.

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  • Received 23 January 2019
  • Revised 29 April 2019

DOI:https://doi.org/10.1103/PhysRevC.99.064325

©2019 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

W. Urban1, T. Rząca-Urban1, J. Wiśniewski1, I. Ahmad2, A. G. Smith3, and G. S. Simpson3

  • 1Faculty of Physics, University of Warsaw, ulica Pasteura 5, PL-02-093 Warsaw, Poland
  • 2Argonne National Laboratory, Argonne, Illinois 60439, USA
  • 3Department of Physics and Astronomy, The University of Manchester, M13 9PL Manchester, United Kingdom

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Issue

Vol. 99, Iss. 6 — June 2019

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