Shell evolution of stable N=50-56 Zr and Mo nuclei with respect to low-lying octupole excitations



Gregor, ET, Scheck, M, Chapman, R, Gaffney, LP ORCID: 0000-0002-2938-3696, Keatings, J, Mashtakov, KR, O'Donnell, D, Smith, JF, Spagnoletti, P, Thuerauf, M
et al (show 2 more authors) (2017) Shell evolution of stable N=50-56 Zr and Mo nuclei with respect to low-lying octupole excitations. EUROPEAN PHYSICAL JOURNAL A, 53 (3). 50-.

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Abstract

For the N = 50-56 zirconium (Z = 40) and molybdenum (Z = 42) isotopes, the evolution of subshells is evaluated by extracting the effective single-particle energies from available particle-transfer data. The extracted systematic evolution of neutron subshells and the systematics of the excitation energy of the octupole phonons provide evidence for type-II shape coexistence in the Zr isotopes. Employing a simplistic approach, the relative effective single-particle energies are used to estimate whether the formation of low-lying octupole-isovector excitations is possible at the proposed energies. The results raise doubts about this assignment.

Item Type: Article
Depositing User: Symplectic Admin
Date Deposited: 09 May 2019 10:44
Last Modified: 15 Mar 2024 15:38
DOI: 10.1140/epja/i2017-12224-7
Open Access URL: https://doi.org/10.1140/epja/i2017-12224-7
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3040428