Physics Letters B (Jul 2018)
Proton single particle energies next to 78Ni: Spectroscopy of 77Cu via single proton knock-out reaction
- Zs. Vajta,
- D. Sohler,
- Y. Shiga,
- K. Yoneda,
- K. Sieja,
- D. Steppenbeck,
- Zs. Dombrádi,
- N. Aoi,
- P. Doornenbal,
- J. Lee,
- H. Liu,
- M. Matsushita,
- S. Takeuchi,
- H. Wang,
- H. Baba,
- P. Bednarczyk,
- Zs. Fülöp,
- S. Go,
- T. Hashimoto,
- E. Ideguchi,
- K. Ieki,
- K. Kobayashi,
- Y. Kondo,
- R. Minakata,
- T. Motobayashi,
- D. Nishimura,
- H. Otsu,
- H. Sakurai,
- Y. Sun,
- A. Tamaii,
- R. Tanaka,
- Z. Tian,
- T. Yamamoto,
- X. Yang,
- Z. Yang,
- Y. Ye,
- R. Yokoyama,
- J. Zenihiro
Affiliations
- Zs. Vajta
- Institute for Nuclear Research, Hungarian Academy of Sciences, P.O. Box 51, Debrecen, H-4001, Hungary
- D. Sohler
- Institute for Nuclear Research, Hungarian Academy of Sciences, P.O. Box 51, Debrecen, H-4001, Hungary; Corresponding author.
- Y. Shiga
- RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan; Department of Physics, Rikkyo University, Toshima, Tokyo 171-8501, Japan
- K. Yoneda
- RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
- K. Sieja
- Université de Strasbourg, IPHC, 23 rue du Loess, 67037, Strasbourg, France; CNRS, UMR7178, 67037 Strasbourg, France
- D. Steppenbeck
- RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
- Zs. Dombrádi
- Institute for Nuclear Research, Hungarian Academy of Sciences, P.O. Box 51, Debrecen, H-4001, Hungary
- N. Aoi
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
- P. Doornenbal
- RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
- J. Lee
- RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan; Department of Physics, University of Hong Kong, Pokfulam Road, Hong Kong
- H. Liu
- RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan; School of Physics, Peking University, 209 Chengfu Road, Beijing 100871, People's Republic of China
- M. Matsushita
- RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan; Center for Nuclear Study, University of Tokyo, RIKEN Campus, Wako, Saitama 351-0198, Japan
- S. Takeuchi
- RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan; Department of Physics, Tokyo Institute of Technology, Meguro, Tokyo 152-8551, Japan
- H. Wang
- RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan; School of Physics, Peking University, 209 Chengfu Road, Beijing 100871, People's Republic of China
- H. Baba
- RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
- P. Bednarczyk
- Institute of Nuclear Physics, Polish Academy of Sciences, 152 Radzikowskiego Street, Krakow 31-342, Poland
- Zs. Fülöp
- Institute for Nuclear Research, Hungarian Academy of Sciences, P.O. Box 51, Debrecen, H-4001, Hungary
- S. Go
- RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan; Center for Nuclear Study, University of Tokyo, RIKEN Campus, Wako, Saitama 351-0198, Japan; Department of Science and Engineering, University of Tennessee, Knoxville, TN 37996-1200, USA
- T. Hashimoto
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
- E. Ideguchi
- Center for Nuclear Study, University of Tokyo, RIKEN Campus, Wako, Saitama 351-0198, Japan
- K. Ieki
- Department of Physics, Rikkyo University, Toshima, Tokyo 171-8501, Japan
- K. Kobayashi
- Department of Physics, Rikkyo University, Toshima, Tokyo 171-8501, Japan
- Y. Kondo
- Department of Physics, Tokyo Institute of Technology, Meguro, Tokyo 152-8551, Japan; RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
- R. Minakata
- Department of Physics, Tokyo Institute of Technology, Meguro, Tokyo 152-8551, Japan; RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
- T. Motobayashi
- RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
- D. Nishimura
- RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan; Department of Physics, Tokyo University of Science, Noda, Chiba 278-8510, Japan
- H. Otsu
- RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
- 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
- Y. Sun
- Department of Physics, Shanghai Jiao-Tong University, Shanghai 200240, People's Republic of China
- A. Tamaii
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
- R. Tanaka
- Department of Physics, Tokyo Institute of Technology, Meguro, Tokyo 152-8551, Japan; RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
- Z. Tian
- School of Physics, Peking University, 209 Chengfu Road, Beijing 100871, People's Republic of China
- T. Yamamoto
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
- X. Yang
- RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan; KU Leuven, Instituut voor Kern-en Stralingsfysica, B-3001 Leuven, Belgium
- Z. Yang
- RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
- Y. Ye
- School of Physics, Peking University, 209 Chengfu Road, Beijing 100871, People's Republic of China
- R. Yokoyama
- RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan; Center for Nuclear Study, University of Tokyo, RIKEN Campus, Wako, Saitama 351-0198, Japan
- J. Zenihiro
- RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
- Journal volume & issue
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Vol. 782
pp. 99 – 103
Abstract
Excited states of 77Cu have been investigated by use of single proton knock-out reaction at the Radioactive Isotope Beam Factory in RIKEN in order to reveal the main components of the proton single-particle states. Three excited states were observed at 271, 902 and 2068 keV in 77Cu. The lowest-energy excited state follows the trend predicted for the crossing of the 3/21− and 5/21− states. Comparing the excitation energies of the 3/2−, 5/2− and 7/2− levels from 69Cu to 77Cu one can see that the Z=28 shell gap between the p3/2 and f7/2 states is rather stable, while the f5/2−f7/2 spin–orbit splitting decreases by ∼1.5 MeV in agreement with shell model calculations using the tensor force.
