Physics Letters B (Dec 2021)
Mirror energy differences above the 0f7/2 shell: First γ-ray spectroscopy of the Tz = −2 nucleus 56Zn
- A. Fernández,
- A. Jungclaus,
- P. Doornenbal,
- M.A. Bentley,
- S.M. Lenzi,
- D. Rudolph,
- F. Browne,
- M.L. Cortés,
- T. Koiwai,
- R. Taniuchi,
- V. Vaquero,
- K. Wimmer,
- T. Arici,
- N. Imai,
- N. Kitamura,
- B. Longfellow,
- R. Lozeva,
- B. Mauss,
- D.R. Napoli,
- M. Niikura,
- X. Pereira-Lopez,
- S. Pigliapoco,
- A. Poves,
- F. Recchia,
- P. Ruotsalainen,
- H. Sakurai,
- S. Uthayakumaar,
- R. Wadsworth,
- R. Yajzey
Affiliations
- A. Fernández
- Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain
- A. Jungclaus
- Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain; Corresponding author.
- P. Doornenbal
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- M.A. Bentley
- Department of Physics, University of York, Heslington, York YO10 5DD, United Kingdom
- S.M. Lenzi
- Dipartimento di Fisica e Astronomia “Galileo Galilei”, Università degli Studi di Padova and INFN Padova, I-35131 Padova, Italy; Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
- D. Rudolph
- Department of Physics, Lund University, SE-22100 Lund, Sweden
- F. Browne
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- M.L. Cortés
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
- T. Koiwai
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan; RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- R. Taniuchi
- Department of Physics, University of York, Heslington, York YO10 5DD, United Kingdom
- V. Vaquero
- Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain
- K. Wimmer
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan; RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- T. Arici
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
- N. Imai
- Center for Nuclear Study, University of Tokyo, RIKEN campus, Wako, Saitama 351-0198, Japan
- N. Kitamura
- Center for Nuclear Study, University of Tokyo, RIKEN campus, Wako, Saitama 351-0198, Japan
- B. Longfellow
- Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA; National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824, USA
- R. Lozeva
- Université Paris-Saclay, IJCLab, CNRS/IN2P3, F-91405 Orsay, France
- B. Mauss
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- D.R. Napoli
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
- M. Niikura
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
- X. Pereira-Lopez
- Department of Physics, University of York, Heslington, York YO10 5DD, United Kingdom
- S. Pigliapoco
- Dipartimento di Fisica e Astronomia “Galileo Galilei”, Università degli Studi di Padova and INFN Padova, I-35131 Padova, Italy
- A. Poves
- Departamento de Física Teórica and CIAFF, Universidad Autónoma de Madrid, E-28049, Madrid, Spain
- F. Recchia
- Dipartimento di Fisica e Astronomia “Galileo Galilei”, Università degli Studi di Padova and INFN Padova, I-35131 Padova, Italy; Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
- P. Ruotsalainen
- Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- H. Sakurai
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
- S. Uthayakumaar
- Department of Physics, University of York, Heslington, York YO10 5DD, United Kingdom
- R. Wadsworth
- Department of Physics, University of York, Heslington, York YO10 5DD, United Kingdom
- R. Yajzey
- Department of Physics, University of York, Heslington, York YO10 5DD, United Kingdom; Department of Physics, Faculty of Science, Jazan University, Jazan, Saudi Arabia
- Journal volume & issue
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Vol. 823
p. 136784
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 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.
