Isospin symmetry in the $T = 1, A = 62$ triplet

K. Wimmer; P. Ruotsalainen; S. M. Lenzi; A. Poves; T. Hüyük; F. Browne; P. Doornenbal; T. Koiwai; T. Arici; K. Auranen; M. A. Bentley; M. L. Cortés; C. Delafosse; T. Eronen; Z. Ge; T. Grahn; P. T. Greenlees; A. Illana; N. Imai; H. Joukainen; R. Julin; A. Jungclaus; H. Jutila; A. Kankainen; N. Kitamura; B. Longfellow; J. Louko; R. Lozeva; M. Luoma; B. Mauss; D. R. Napoli; M. Niikura; J. Ojala; J. Pakarinen; X. Pereira-Lopez; P. Rahkila; F. Recchia; M. Sandzelius; J. Sarén; R. Taniuchi; H. Tann; S. Uthayakumaar; J. Uusitalo; V. Vaquero; R. Wadsworth; G. Zimba; R. Yajzey

doi:10.1016/j.physletb.2023.138249

Isospin symmetry in the $T = 1, A = 62$ triplet

K. Wimmer, P. Ruotsalainen, S. M. Lenzi, A. Poves, T. Hüyük, F. Browne, P. Doornenbal, T. Koiwai, T. Arici, K. Auranen, M. A. Bentley, M. L. Cortés, C. Delafosse, T. Eronen, Z. Ge, T. Grahn, P. T. Greenlees, A. Illana, N. Imai, H. JoukainenR. Julin, A. Jungclaus, H. Jutila, A. Kankainen, N. Kitamura, B. Longfellow, J. Louko, R. Lozeva, M. Luoma, B. Mauss, D. R. Napoli, M. Niikura, J. Ojala, J. Pakarinen, X. Pereira-Lopez, P. Rahkila, F. Recchia, M. Sandzelius, J. Sarén, R. Taniuchi, H. Tann, S. Uthayakumaar, J. Uusitalo, V. Vaquero, R. Wadsworth, G. Zimba, R. Yajzey

Physics

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

Abstract

Excited states in the $T_z = 0, -1$ nuclei $^{62}$Ga and $^{62}$Ge were populated in direct reactions of relativistic radioactive ion beams at the RIBF. Coincident \grays were measured with the DALI2$^+$ array and uniquely assigned to the $A=62$ isobars. In addition, $^{62}$Ge was also studied independently at JYFL-ACCLAB using the ${}^{24}$Mg(${}^{40}$Ca,$2n$)${}^{62}$Ge fusion-evaporation reaction. The first excited $T=1, J^\pi =2^+$ states in $^{62}$Ga and $^{62}$Ge were identified at $979(1)$ and $965(1)$~keV, respectively, resolving discrepant interpretations in the literature. States beyond the first $2^+$ state in $^{62}$Ge were also identified for the first time in the present work. The results are compared with shell-model calculations in the $fp$ model space. Mirror and triplet energy differences are analyzed in terms of individual charge-symmetry and charge-independence breaking contributions. The MED results confirm the shrinkage of the $p$-orbits' radii when they are occupied by at least one nucleon on average.

Original language	English
Article number	138249
Number of pages	7
Journal	Physics Letters B
Volume	847
Early online date	6 Nov 2023
DOIs	https://doi.org/10.1016/j.physletb.2023.138249
Publication status	Published - 10 Dec 2023

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nucl-ex

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10.1016/j.physletb.2023.138249Licence: CC BY

Isospin symmetry in the 𝑇 = 1,𝐴 = 62 triplet
© 2023 The Author(s).
Final published version, 819 KBLicence: CC BY

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. K. (Co-investigator), WATTS, D. (Co-investigator), Wadsworth, R. (Co-investigator) & ZACHARIOU, N. (Co-investigator)
SCIENCE AND TECHNOLOGY FACILITIES COUNCIL (STFC)
1/10/21 → 31/03/25
Project: Research project (funded) › Research
Nuclear Physics Consolidated Grant
JENKINS, D. (Principal investigator), ANDREYEV, A. (Co-investigator), BENTLEY, M. (Co-investigator), DIGET, C. A. (Co-investigator), DOBACZEWSKI, J. J. (Co-investigator), FULTON, B. R. (Co-investigator), LAIRD, A. M. (Co-investigator), PASCHALIS, S. (Co-investigator), PASTORE, A. (Co-investigator), Petri, M. K. (Co-investigator) & Wadsworth, R. (Co-investigator)
SCIENCE AND TECHNOLOGY FACILITIES COUNCIL (STFC)
1/10/17 → 30/09/22
Project: Research project (funded) › Research

Cite this

Wimmer, K., Ruotsalainen, P., Lenzi, S. M., Poves, A., Hüyük, T., Browne, F., Doornenbal, P., Koiwai, T., Arici, T., Auranen, K., Bentley, M. A., Cortés, M. L., Delafosse, C., Eronen, T., Ge, Z., Grahn, T., Greenlees, P. T., Illana, A., Imai, N., ... Yajzey, R. (2023). Isospin symmetry in the $T = 1, A = 62$ triplet. Physics Letters B, 847, Article 138249. https://doi.org/10.1016/j.physletb.2023.138249

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title = "Isospin symmetry in the $T = 1, A = 62$ triplet",

abstract = "Excited states in the $T_z = 0, -1$ nuclei $^{62}$Ga and $^{62}$Ge were populated in direct reactions of relativistic radioactive ion beams at the RIBF. Coincident \grays were measured with the DALI2$^+$ array and uniquely assigned to the $A=62$ isobars. In addition, $^{62}$Ge was also studied independently at JYFL-ACCLAB using the ${}^{24}$Mg(${}^{40}$Ca,$2n$)${}^{62}$Ge fusion-evaporation reaction. The first excited $T=1, J^\pi =2^+$ states in $^{62}$Ga and $^{62}$Ge were identified at $979(1)$ and $965(1)$~keV, respectively, resolving discrepant interpretations in the literature. States beyond the first $2^+$ state in $^{62}$Ge were also identified for the first time in the present work. The results are compared with shell-model calculations in the $fp$ model space. Mirror and triplet energy differences are analyzed in terms of individual charge-symmetry and charge-independence breaking contributions. The MED results confirm the shrinkage of the $p$-orbits' radii when they are occupied by at least one nucleon on average.",

keywords = "nucl-ex",

author = "K. Wimmer and P. Ruotsalainen and Lenzi, {S. M.} and A. Poves and T. H{\"u}y{\"u}k and F. Browne and P. Doornenbal and T. Koiwai and T. Arici and K. Auranen and Bentley, {M. A.} and Cort{\'e}s, {M. L.} and C. Delafosse and T. Eronen and Z. Ge and T. Grahn and Greenlees, {P. T.} and A. Illana and N. Imai and H. Joukainen and R. Julin and A. Jungclaus and H. Jutila and A. Kankainen and N. Kitamura and B. Longfellow and J. Louko and R. Lozeva and M. Luoma and B. Mauss and Napoli, {D. R.} and M. Niikura and J. Ojala and J. Pakarinen and X. Pereira-Lopez and P. Rahkila and F. Recchia and M. Sandzelius and J. Sar{\'e}n and R. Taniuchi and H. Tann and S. Uthayakumaar and J. Uusitalo and V. Vaquero and R. Wadsworth and G. Zimba and R. Yajzey",

note = "{\textcopyright} 2023 The Author(s).",

year = "2023",

month = dec,

day = "10",

doi = "10.1016/j.physletb.2023.138249",

language = "English",

volume = "847",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier B.V.",

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Wimmer, K, Ruotsalainen, P, Lenzi, SM, Poves, A, Hüyük, T, Browne, F, Doornenbal, P, Koiwai, T, Arici, T, Auranen, K, Bentley, MA, Cortés, ML, Delafosse, C, Eronen, T, Ge, Z, Grahn, T, Greenlees, PT, Illana, A, Imai, N, Joukainen, H, Julin, R, Jungclaus, A, Jutila, H, Kankainen, A, Kitamura, N, Longfellow, B, Louko, J, Lozeva, R, Luoma, M, Mauss, B, Napoli, DR, Niikura, M, Ojala, J, Pakarinen, J, Pereira-Lopez, X, Rahkila, P, Recchia, F, Sandzelius, M, Sarén, J, Taniuchi, R, Tann, H, Uthayakumaar, S, Uusitalo, J, Vaquero, V, Wadsworth, R, Zimba, G & Yajzey, R 2023, 'Isospin symmetry in the $T = 1, A = 62$ triplet', Physics Letters B, vol. 847, 138249. https://doi.org/10.1016/j.physletb.2023.138249

TY - JOUR

T1 - Isospin symmetry in the $T = 1, A = 62$ triplet

AU - Wimmer, K.

AU - Ruotsalainen, P.

AU - Lenzi, S. M.

AU - Poves, A.

AU - Hüyük, T.

AU - Browne, F.

AU - Doornenbal, P.

AU - Koiwai, T.

AU - Arici, T.

AU - Auranen, K.

AU - Bentley, M. A.

AU - Cortés, M. L.

AU - Delafosse, C.

AU - Eronen, T.

AU - Ge, Z.

AU - Grahn, T.

AU - Greenlees, P. T.

AU - Illana, A.

AU - Imai, N.

AU - Joukainen, H.

AU - Julin, R.

AU - Jungclaus, A.

AU - Jutila, H.

AU - Kankainen, A.

AU - Kitamura, N.

AU - Longfellow, B.

AU - Louko, J.

AU - Lozeva, R.

AU - Luoma, M.

AU - Mauss, B.

AU - Napoli, D. R.

AU - Niikura, M.

AU - Ojala, J.

AU - Pakarinen, J.

AU - Pereira-Lopez, X.

AU - Rahkila, P.

AU - Recchia, F.

AU - Sandzelius, M.

AU - Sarén, J.

AU - Taniuchi, R.

AU - Tann, H.

AU - Uthayakumaar, S.

AU - Uusitalo, J.

AU - Vaquero, V.

AU - Wadsworth, R.

AU - Zimba, G.

AU - Yajzey, R.

PY - 2023/12/10

Y1 - 2023/12/10

N2 - Excited states in the $T_z = 0, -1$ nuclei $^{62}$Ga and $^{62}$Ge were populated in direct reactions of relativistic radioactive ion beams at the RIBF. Coincident \grays were measured with the DALI2$^+$ array and uniquely assigned to the $A=62$ isobars. In addition, $^{62}$Ge was also studied independently at JYFL-ACCLAB using the ${}^{24}$Mg(${}^{40}$Ca,$2n$)${}^{62}$Ge fusion-evaporation reaction. The first excited $T=1, J^\pi =2^+$ states in $^{62}$Ga and $^{62}$Ge were identified at $979(1)$ and $965(1)$~keV, respectively, resolving discrepant interpretations in the literature. States beyond the first $2^+$ state in $^{62}$Ge were also identified for the first time in the present work. The results are compared with shell-model calculations in the $fp$ model space. Mirror and triplet energy differences are analyzed in terms of individual charge-symmetry and charge-independence breaking contributions. The MED results confirm the shrinkage of the $p$-orbits' radii when they are occupied by at least one nucleon on average.

AB - Excited states in the $T_z = 0, -1$ nuclei $^{62}$Ga and $^{62}$Ge were populated in direct reactions of relativistic radioactive ion beams at the RIBF. Coincident \grays were measured with the DALI2$^+$ array and uniquely assigned to the $A=62$ isobars. In addition, $^{62}$Ge was also studied independently at JYFL-ACCLAB using the ${}^{24}$Mg(${}^{40}$Ca,$2n$)${}^{62}$Ge fusion-evaporation reaction. The first excited $T=1, J^\pi =2^+$ states in $^{62}$Ga and $^{62}$Ge were identified at $979(1)$ and $965(1)$~keV, respectively, resolving discrepant interpretations in the literature. States beyond the first $2^+$ state in $^{62}$Ge were also identified for the first time in the present work. The results are compared with shell-model calculations in the $fp$ model space. Mirror and triplet energy differences are analyzed in terms of individual charge-symmetry and charge-independence breaking contributions. The MED results confirm the shrinkage of the $p$-orbits' radii when they are occupied by at least one nucleon on average.

KW - nucl-ex

U2 - 10.1016/j.physletb.2023.138249

DO - 10.1016/j.physletb.2023.138249

M3 - Article

SN - 0370-2693

VL - 847

JO - Physics Letters B

JF - Physics Letters B

M1 - 138249

ER -

Isospin symmetry in the $T = 1, A = 62$ triplet

Abstract

Bibliographical note

Keywords

Access to Document

Projects

Nuclear Physics Consolidated Grant 2021-2024

Nuclear Physics Consolidated Grant

Cite this