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Mirror energy differences above the 0f7/2 shell: First γ-ray spectroscopy of the Tz=−2 nucleus 56Zn

Fernández, A. ; Jungclaus, A. ; Doornenbal, P. ; Bentley, M.A. ; Lenzi, S.M. ; Rudolph, D. LU orcid ; Browne, F. ; Cortés, M.L. ; Koiwai, T. and Taniuchi, R. , et al. (2021) In Physics Letters B 823.
Abstract
Excited states in 56Zn were populated following one-neutron removal from a 57Zn beam impinging on a Be target at intermediate energies in an experiment conducted at the Radioactive Isotope Beam Factory at RIKEN. Three γ rays were observed and tentatively assigned to the 6+ → 4+ → 2+ → 0+ yrast sequence. This turns 56Zn into the heaviest Tz=−2 nucleus in which excited states are known. The excitation-energy differences between these levels and the isobaric analogue states in the Tz=+2 mirror partner, 56Fe, are compared with large-scale shell-model calculations considering the full pf valence space and various... (More)
Excited states in 56Zn were populated following one-neutron removal from a 57Zn beam impinging on a Be target at intermediate energies in an experiment conducted at the Radioactive Isotope Beam Factory at RIKEN. Three γ rays were observed and tentatively assigned to the 6+ → 4+ → 2+ → 0+ yrast sequence. This turns 56Zn into the heaviest Tz=−2 nucleus in which excited states are known. The excitation-energy differences between these levels and the isobaric analogue states in the Tz=+2 mirror partner, 56Fe, are compared with large-scale shell-model calculations considering the full pf valence space and various isospin-breaking contributions. This comparison, together with an analysis of the mirror energy differences in the A=58, Tz=±1 pair 58Zn and 58Ni, provides valuable information with respect to the size of the monopole radial and the isovector multipole isospin-breaking terms in the region above doubly-magic 56Ni. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
isospin symmetry, mirror nuclei, shell-model calculations, nucleon removal, radioactive ion beams
in
Physics Letters B
volume
823
article number
136784
pages
5 pages
publisher
Elsevier
external identifiers
  • scopus:85119597766
ISSN
0370-2693
DOI
10.1016/j.physletb.2021.136784
project
Nuclear Structure at the Limits: Isotope-selective Spectroscopy
language
English
LU publication?
yes
id
88f5e9fa-f6e7-43a6-b11a-2895eb6766b7
alternative location
https://www.sciencedirect.com/science/article/pii/S0370269321007243
date added to LUP
2021-11-23 19:44:35
date last changed
2024-03-08 22:36:26
@article{88f5e9fa-f6e7-43a6-b11a-2895eb6766b7,
  abstract     = {{Excited states in <sup>56</sup>Zn were populated following one-neutron removal from a <sup>57</sup>Zn beam impinging on a Be target at intermediate energies in an experiment conducted at the Radioactive Isotope Beam Factory at RIKEN. Three γ rays were observed and tentatively assigned to the 6<sup>+ </sup>→ 4<sup>+ </sup>→ 2<sup>+</sup> → 0<sup>+</sup> yrast sequence. This turns <sup>56</sup>Zn into the heaviest <i>T</i><sub>z</sub>=−2 nucleus in which excited states are known. The excitation-energy differences between these levels and the isobaric analogue states in the <i>T</i><sub>z</sub>=+2 mirror partner, <sup>56</sup>Fe, are compared with large-scale shell-model calculations considering the full <i>pf</i> valence space and various isospin-breaking contributions. This comparison, together with an analysis of the mirror energy differences in the <i>A</i>=58, <i>T</i><sub>z</sub>=±1 pair <sup>58</sup>Zn and <sup>58</sup>Ni, provides valuable information with respect to the size of the monopole radial and the isovector multipole isospin-breaking terms in the region above doubly-magic <sup>56</sup>Ni.}},
  author       = {{Fernández, A. and Jungclaus, A. and Doornenbal, P. and Bentley, M.A. and Lenzi, S.M. and Rudolph, D. and Browne, F. and Cortés, M.L. and Koiwai, T. and Taniuchi, R. and Vaquero, V. and Wimmer, K. and Arici, T. and Imai, N. and Kitamura, N. and Longfellow, B. and Lozeva, R. and Mauss, B. and Napoli, D.R. and Niikura, M. and Pereira-Lopez, X. and Pigliapoco, S. and Poves, A. and Recchia, F. and Ruotsalainen, P. and Sakurai, H. and Uthayakumaar, S. and Wadsworth, R. and Yajzey, R.}},
  issn         = {{0370-2693}},
  keywords     = {{isospin symmetry; mirror nuclei; shell-model calculations; nucleon removal; radioactive ion beams}},
  language     = {{eng}},
  month        = {{12}},
  publisher    = {{Elsevier}},
  series       = {{Physics Letters B}},
  title        = {{Mirror energy differences above the 0<i>f</i><sub>7/2</sub> shell: First γ-ray spectroscopy of the <i>T</i><sub>z</sub>=−2 nucleus <sup>56</sup>Zn}},
  url          = {{https://lup.lub.lu.se/search/files/110057792/Zn56_PLB_S0370269321007243_main.pdf}},
  doi          = {{10.1016/j.physletb.2021.136784}},
  volume       = {{823}},
  year         = {{2021}},
}