Physics Letters B (Dec 2023)
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
Affiliations
- K. Wimmer
- GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany; Department of Physics, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain; Corresponding author at: GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany.
- P. Ruotsalainen
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- S.M. Lenzi
- Dipartimento di Fisica e Astronomia dell' Università di Padova, Padova I-35131, Italy; INFN, Sezione di Padova, Padova I-35131, Italy
- A. Poves
- Departamento de Física Teórica and IFT UAM-CSIC, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- T. Hüyük
- Instituto de Fisica Corpuscular, CSIC-Universidad de Valencia, E-46071 Valencia, Spain
- F. Browne
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- P. Doornenbal
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- T. Koiwai
- Department of Physics, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- T. Arici
- GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
- K. Auranen
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- M.A. Bentley
- School of Physics, Engineering and Technology, University of York, YO10 5DD York, United Kingdom
- M.L. Cortés
- INFN, Sezione di Padova, Padova I-35131, Italy
- C. Delafosse
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland; Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
- T. Eronen
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- Z. Ge
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland; GSI Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany
- T. Grahn
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- P.T. Greenlees
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- A. Illana
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- N. Imai
- Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- H. Joukainen
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- R. Julin
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- A. Jungclaus
- Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain
- H. Jutila
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- A. Kankainen
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- N. Kitamura
- Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- B. Longfellow
- National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824 USA
- J. Louko
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- R. Lozeva
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
- M. Luoma
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- B. Mauss
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- D.R. Napoli
- INFN, Laboratori Nazionali di Legnaro, Legnaro (Padova), Italy
- M. Niikura
- Department of Physics, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- J. Ojala
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- J. Pakarinen
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- X. Pereira-Lopez
- School of Physics, Engineering and Technology, University of York, YO10 5DD York, United Kingdom
- P. Rahkila
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- F. Recchia
- Dipartimento di Fisica e Astronomia dell' Università di Padova, Padova I-35131, Italy; INFN, Sezione di Padova, Padova I-35131, Italy
- M. Sandzelius
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- J. Sarén
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- R. Taniuchi
- Department of Physics, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- H. Tann
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland; University of Liverpool, Liverpool L69 7ZE, United Kingdom
- S. Uthayakumaar
- School of Physics, Engineering and Technology, University of York, YO10 5DD York, United Kingdom
- J. Uusitalo
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- V. Vaquero
- Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain
- R. Wadsworth
- School of Physics, Engineering and Technology, University of York, YO10 5DD York, United Kingdom
- G. Zimba
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- R. Yajzey
- School of Physics, Engineering and Technology, University of York, YO10 5DD York, United Kingdom; Department of Physics, Faculty of Science, Jazan University, Jazan 45142, Saudi Arabia
- Journal volume & issue
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Vol. 847
p. 138249
Abstract
Excited states in the Tz=0,−1 nuclei 62Ga and 62Ge were populated in direct reactions of relativistic radioactive ion beams at the RIBF. Coincident γ rays were measured with the DALI2+ array and uniquely assigned to the A=62 isobars. In addition, 62Ge was also studied independently at JYFL-ACCLAB using the 24Mg(40Ca,2n)62Ge fusion-evaporation reaction. The first excited T=1,Jπ=2+ states in 62Ga and 62Ge were identified at 979(1) and 965(1) keV, respectively, resolving discrepant interpretations in the literature. States beyond the first 2+ state in 62Ge 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.
