Physics Letters B (Oct 2017)
Shell evolution beyond Z=28 and N=50: Spectroscopy of 81,82,83,84Zn
- C.M. Shand,
- Zs. Podolyák,
- M. Górska,
- P. Doornenbal,
- A. Obertelli,
- F. Nowacki,
- T. Otsuka,
- K. Sieja,
- J.A. Tostevin,
- Y. Tsunoda,
- G. Authelet,
- H. Baba,
- D. Calvet,
- A. Château,
- S. Chen,
- A. Corsi,
- A. Delbart,
- J.M. Gheller,
- A. Giganon,
- A. Gillibert,
- T. Isobe,
- V. Lapoux,
- M. Matsushita,
- S. Momiyama,
- T. Motobayashi,
- M. Niikura,
- H. Otsu,
- N. Paul,
- C. Péron,
- A. Peyaud,
- E.C. Pollacco,
- J.-Y. Roussé,
- H. Sakurai,
- C. Santamaria,
- M. Sasano,
- Y. Shiga,
- D. Steppenbeck,
- S. Takeuchi,
- R. Taniuchi,
- T. Uesaka,
- H. Wang,
- K. Yoneda,
- T. Ando,
- T. Arici,
- A. Blazhev,
- F. Browne,
- A.M. Bruce,
- R.J. Carroll,
- L.X. Chung,
- M.L. Cortés,
- M. Dewald,
- B. Ding,
- Zs. Dombrádi,
- F. Flavigny,
- S. Franchoo,
- F. Giacoppo,
- A. Gottardo,
- K. Hadyńska-Klęk,
- A. Jungclaus,
- Z. Korkulu,
- S. Koyama,
- Y. Kubota,
- J. Lee,
- M. Lettmann,
- B.D. Linh,
- J. Liu,
- Z. Liu,
- C. Lizarazo,
- C. Louchart,
- R. Lozeva,
- K. Matsui,
- T. Miyazaki,
- K. Moschner,
- M. Nagamine,
- N. Nakatsuka,
- S. Nishimura,
- C.R. Nita,
- C.R. Nobs,
- L. Olivier,
- S. Ota,
- R. Orlandi,
- Z. Patel,
- P.H. Regan,
- M. Rudigier,
- E. Şahin,
- T. Saito,
- P.-A. Söderström,
- I. Stefan,
- T. Sumikama,
- D. Suzuki,
- Zs. Vajta,
- V. Vaquero,
- V. Werner,
- K. Wimmer,
- J. Wu,
- Z.Y. Xu
Affiliations
- C.M. Shand
- Department of Physics, University of Surrey, Guildford, GU2 7XH, United Kingdom; Corresponding author.
- Zs. Podolyák
- Department of Physics, University of Surrey, Guildford, GU2 7XH, United Kingdom
- M. Górska
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
- P. Doornenbal
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- A. Obertelli
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- F. Nowacki
- IPHC, CNRS/IN2P3 et Université de Strasbourg, F-67037 Strasbourg, France
- T. Otsuka
- Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; Department of Physics, University of Tokyo, Hongo, Bunkyo, Tokyo 113-0033, Japan
- K. Sieja
- IPHC, CNRS/IN2P3 et Université de Strasbourg, F-67037 Strasbourg, France
- J.A. Tostevin
- Department of Physics, University of Surrey, Guildford, GU2 7XH, United Kingdom
- Y. Tsunoda
- Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- G. Authelet
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- H. Baba
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- D. Calvet
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- A. Château
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- S. Chen
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, PR China; RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- A. Corsi
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- A. Delbart
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- J.M. Gheller
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- A. Giganon
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- A. Gillibert
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- T. Isobe
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- V. Lapoux
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- M. Matsushita
- Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- S. Momiyama
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Department of Physics, University of Tokyo, Hongo, Bunkyo, Tokyo 113-0033, Japan
- T. Motobayashi
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- M. Niikura
- Department of Physics, University of Tokyo, Hongo, Bunkyo, Tokyo 113-0033, Japan
- H. Otsu
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- N. Paul
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France; RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- C. Péron
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- A. Peyaud
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- E.C. Pollacco
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- J.-Y. Roussé
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- H. Sakurai
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Department of Physics, University of Tokyo, Hongo, Bunkyo, Tokyo 113-0033, Japan
- C. Santamaria
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- M. Sasano
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Y. Shiga
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Department of Physics, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima, Tokyo 172-8501, Japan
- D. Steppenbeck
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- S. Takeuchi
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- R. Taniuchi
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Department of Physics, University of Tokyo, Hongo, Bunkyo, Tokyo 113-0033, Japan
- T. Uesaka
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- H. Wang
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- K. Yoneda
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- T. Ando
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Department of Physics, University of Tokyo, Hongo, Bunkyo, Tokyo 113-0033, Japan
- T. Arici
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
- A. Blazhev
- Institut für Kernphysik, Universität zu Köln, 50937 Köln, Germany
- F. Browne
- School of Computing, Engineering and Mathematics, University of Brighton, Brighton, BN2 4JG, United Kingdom
- A.M. Bruce
- School of Computing, Engineering and Mathematics, University of Brighton, Brighton, BN2 4JG, United Kingdom
- R.J. Carroll
- Department of Physics, University of Surrey, Guildford, GU2 7XH, United Kingdom
- L.X. Chung
- Institute for Nuclear Science & Technology, VINATOM, 179 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
- M.L. Cortés
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany; Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- M. Dewald
- Institut für Kernphysik, Universität zu Köln, 50937 Köln, Germany
- B. Ding
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China
- Zs. Dombrádi
- MTA Atomki, P. O. Box 51, Debrecen, H-4001, Hungary
- F. Flavigny
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
- S. Franchoo
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
- F. Giacoppo
- Department of Physics, University of Oslo, N-0316 Oslo, Norway; Helmholtz Institute Mainz, 55099 Mainz, Germany; GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
- A. Gottardo
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
- K. Hadyńska-Klęk
- Department of Physics, University of Oslo, N-0316 Oslo, Norway
- A. Jungclaus
- Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain
- Z. Korkulu
- MTA Atomki, P. O. Box 51, Debrecen, H-4001, Hungary
- S. Koyama
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Department of Physics, University of Tokyo, Hongo, Bunkyo, Tokyo 113-0033, Japan
- Y. Kubota
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- J. Lee
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
- M. Lettmann
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- B.D. Linh
- Institute for Nuclear Science & Technology, VINATOM, 179 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
- J. Liu
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
- Z. Liu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China
- C. Lizarazo
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany; Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- C. Louchart
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- R. Lozeva
- IPHC, CNRS/IN2P3 et Université de Strasbourg, F-67037 Strasbourg, France; CSNSM, CNRS/IN2P3, Université Paris-Sud, F-91405 Orsay Campus, France
- K. Matsui
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Department of Physics, University of Tokyo, Hongo, Bunkyo, Tokyo 113-0033, Japan
- T. Miyazaki
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Department of Physics, University of Tokyo, Hongo, Bunkyo, Tokyo 113-0033, Japan
- K. Moschner
- Institut für Kernphysik, Universität zu Köln, 50937 Köln, Germany
- M. Nagamine
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Department of Physics, University of Tokyo, Hongo, Bunkyo, Tokyo 113-0033, Japan
- N. Nakatsuka
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Department of Physics, Kyoto University, Kyoto 606-8502, Japan
- S. Nishimura
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- C.R. Nita
- Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN-HH), Bucharest 077125, Romania
- C.R. Nobs
- School of Computing, Engineering and Mathematics, University of Brighton, Brighton, BN2 4JG, United Kingdom
- L. Olivier
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
- S. Ota
- Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- R. Orlandi
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1195, Japan
- Z. Patel
- Department of Physics, University of Surrey, Guildford, GU2 7XH, United Kingdom
- P.H. Regan
- Department of Physics, University of Surrey, Guildford, GU2 7XH, United Kingdom
- M. Rudigier
- Department of Physics, University of Surrey, Guildford, GU2 7XH, United Kingdom
- E. Şahin
- Department of Physics, University of Oslo, N-0316 Oslo, Norway
- T. Saito
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Department of Physics, University of Tokyo, Hongo, Bunkyo, Tokyo 113-0033, Japan
- P.-A. Söderström
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- I. Stefan
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
- T. Sumikama
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
- D. Suzuki
- Institut de Physique Nucléaire, CNRS-IN2P3, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
- Zs. Vajta
- MTA Atomki, P. O. Box 51, Debrecen, H-4001, Hungary
- V. Vaquero
- Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain
- V. Werner
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- K. Wimmer
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Department of Physics, University of Tokyo, Hongo, Bunkyo, Tokyo 113-0033, Japan
- J. Wu
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, PR China
- Z.Y. Xu
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
- Journal volume & issue
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Vol. 773
pp. 492 – 497
Abstract
We report on the measurement of new low-lying states in the neutron-rich 81,82,83,84Zn nuclei via in-beam γ-ray spectroscopy. These include the 41+→21+ transition in 82Zn, the 21+→0g.s.+ and 41+→21+ transitions in 84Zn, and low-lying states in 81,83Zn were observed for the first time. The reduced E(21+) energies and increased E(41+)/E(2+1) ratios at N=52, 54 compared to those in 80Zn attest that the magicity is confined to the neutron number N=50 only. The deduced level schemes are compared to three state-of-the-art shell model calculations and a good agreement is observed with all three calculations. The newly observed 2+ and 4+ levels in 84Zn suggest the onset of deformation towards heavier Zn isotopes, which has been incorporated by taking into account the upper sdg orbitals in the Ni78-II and the PFSDG-U models.
