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  • Letter
  • Open Access

Shell-model study of octupole collectivity near Pb208

P. Van Isacker and M. Rejmund

  • Grand Accélérateur National d'Ions Lourds, CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, F-14076 Caen, France

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Phys. Rev. Research 4, L022031 – Published 9 May, 2022

DOI: https://doi.org/10.1103/PhysRevResearch.4.L022031

Abstract

We show that the collectivity of the particle-hole wave function of low-lying octupole 3− states in doubly magic nuclei is mainly due to the neutron-proton interaction. Both the enhanced reduced transition probability to the ground state, B(E3;31−→01+), and the coupling of the octupole excitation to a nucleon result from the coherent action of all the components of the collective state. The results obtained with a realistic shell-model interaction both for Pb208 and for Pb209 agree with the geometric collective model of Bohr and Mottelson, where octupole excitations are associated with phonons corresponding to collective shape oscillations of the surface of the nucleus.

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References (19)

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Phys. Rev. Research 4, L022031– Published 9 May, 2022
  • Received 12 January 2022
  • Accepted 15 March 2022
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

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