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

doi:10.1016/j.physletb.2021.136784

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. NiikuraX. Pereira-Lopez, S. Pigliapoco, A. Poves, F. Recchia, P. Ruotsalainen, H. Sakurai, S. Uthayakumaar, R. Wadsworth, R. Yajzey

Physics

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Article number	136784
Number of pages	5
Journal	Physics Letters B
Volume	823
Early online date	19 Nov 2021
DOIs	https://doi.org/10.1016/j.physletb.2021.136784
Publication status	Published - 10 Dec 2021

Bibliographical note

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10.1016/j.physletb.2021.136784Licence: CC BY

1-s2.0-S0370269321007243-main
©2021 The Author(s). Published by Elsevier B.V.
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2 Finished
2 Active

Mirror Nuclei studied at NSCL (Michigan) using mirrored direct knockout
Bentley, M. (Principal investigator), Davies, P. J. (Co-investigator), Jenkins, D. (Co-investigator), Wadsworth, R. (Co-investigator), Henry, T. W. (Student), Milne, S. A. (Student), Scruton, L. M. (Student), Diget, C. A. (Co-investigator) & Nichols, A. J. (Student)
1/05/07 → …
Project: Other project › Research collaboration
Isospin-symmetry breaking in nuclei
Bentley, M. (Principal investigator)
1/07/97 → …
Project: Other project › Research collaboration
Nuclear Physics Consolidated Grant 2021-2024
Jenkins, D. (Principal investigator), Andreyev, A. (Co-investigator), Bashkanov, M. (Co-investigator), Bentley, M. (Co-investigator), Dobaczewski, J. J. (Co-investigator), Laird, A. M. (Co-investigator), Paschalis, S. (Co-investigator), Pastore, A. (Co-investigator), Petri, M. (Co-investigator), Wadsworth, R. (Co-investigator), Watts, D. (Co-investigator) & Zachariou, N. (Co-investigator)
SCIENCE AND TECHNOLOGY FACILITIES COUNCIL (STFC)
1/10/21 → 31/03/25
Project: Research project (funded) › Research

Cite this

Fernández, A., Jungclaus, A., Doornenbal, P., Bentley, M. A., Lenzi, S. M., Rudolph, D., Browne, F., Cortés, M. L., Koiwai, T., Taniuchi, R., Vaquero, V., Wimmer, K., Arici, T., Imai, N., Kitamura, N., Longfellow, B., Lozeva, R., Mauss, B., Napoli, D. R., ... Yajzey, R. (2021). Mirror energy differences above the 0f7/2 shell: First γ-ray spectroscopy of the Tz = −2 nucleus 56Zn. Physics Letters B, 823, Article 136784. https://doi.org/10.1016/j.physletb.2021.136784

@article{6e3ccb5e16f64d5bb5236854aa834840,

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

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.",

author = "A. Fern{\'a}ndez and A. Jungclaus and P. Doornenbal and M.A. Bentley and S.M. Lenzi and D. Rudolph and F. Browne and M.L. Cort{\'e}s and T. Koiwai and R. Taniuchi and V. Vaquero and K. Wimmer and T. Arici and N. Imai and N. Kitamura and B. Longfellow and R. Lozeva and B. Mauss and D.R. Napoli and M. Niikura and X. Pereira-Lopez and S. Pigliapoco and A. Poves and F. Recchia and P. Ruotsalainen and H. Sakurai and S. Uthayakumaar and R. Wadsworth and R. Yajzey",

note = "{\textcopyright}2021 The Author(s). Published by Elsevier B.V.",

year = "2021",

month = dec,

day = "10",

doi = "10.1016/j.physletb.2021.136784",

language = "English",

volume = "823",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier",

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Fernández, A, Jungclaus, A, Doornenbal, P, Bentley, MA, Lenzi, SM, Rudolph, D, Browne, F, Cortés, ML, Koiwai, T, Taniuchi, R, Vaquero, V, Wimmer, K, Arici, T, Imai, N, Kitamura, N, Longfellow, B, Lozeva, R, Mauss, B, Napoli, DR, Niikura, M, Pereira-Lopez, X, Pigliapoco, S, Poves, A, Recchia, F, Ruotsalainen, P, Sakurai, H, Uthayakumaar, S, Wadsworth, R & Yajzey, R 2021, 'Mirror energy differences above the 0f7/2 shell: First γ-ray spectroscopy of the Tz = −2 nucleus 56Zn', Physics Letters B, vol. 823, 136784. https://doi.org/10.1016/j.physletb.2021.136784

TY - JOUR

T1 - Mirror energy differences above the 0f7/2 shell: First γ-ray spectroscopy of the Tz = −2 nucleus 56Zn

AU - Fernández, A.

AU - Jungclaus, A.

AU - Doornenbal, P.

AU - Bentley, M.A.

AU - Lenzi, S.M.

AU - Rudolph, D.

AU - Browne, F.

AU - Cortés, M.L.

AU - Koiwai, T.

AU - Taniuchi, R.

AU - Vaquero, V.

AU - Wimmer, K.

AU - Arici, T.

AU - Imai, N.

AU - Kitamura, N.

AU - Longfellow, B.

AU - Lozeva, R.

AU - Mauss, B.

AU - Napoli, D.R.

AU - Niikura, M.

AU - Pereira-Lopez, X.

AU - Pigliapoco, S.

AU - Poves, A.

AU - Recchia, F.

AU - Ruotsalainen, P.

AU - Sakurai, H.

AU - Uthayakumaar, S.

AU - Wadsworth, R.

AU - Yajzey, R.

PY - 2021/12/10

Y1 - 2021/12/10

N2 - 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.

AB - 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.

U2 - 10.1016/j.physletb.2021.136784

DO - 10.1016/j.physletb.2021.136784

M3 - Article

SN - 0370-2693

VL - 823

JO - Physics Letters B

JF - Physics Letters B

M1 - 136784

ER -

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

Abstract

Bibliographical note

Access to Document

Projects

Mirror Nuclei studied at NSCL (Michigan) using mirrored direct knockout

Isospin-symmetry breaking in nuclei

Nuclear Physics Consolidated Grant 2021-2024

Cite this

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