Physics Letters B (Nov 2024)
Production of neutron-rich nuclei in the vicinity of 78Ni: Fragmentation reactions of unstable 81Ga and 82Ge beams
- X.H. Sun,
- H. Wang,
- K. Yoneda,
- N. Aoi,
- H. Baba,
- P. Bednarczyk,
- Zs. Dombrádi,
- P. Doornenbal,
- Zs. Fülöp,
- S. Go,
- T. Hashimoto,
- E. Ideguchi,
- K. Kobayashi,
- Y. Kondo,
- J. Lee,
- H.N. Liu,
- W.P. Liu,
- J.L. Lou,
- M. Matsushita,
- R. Minakata,
- T. Motobayashi,
- D. Nishimura,
- H. Otsu,
- H. Sakurai,
- Y. Shiga,
- Y.P. Shen,
- D. Sohler,
- D. Steppenbeck,
- Y.L. Sun,
- S. Takeuchi,
- A. Tamii,
- R. Tanaka,
- Z.Y. Tian,
- Zs. Vajta,
- T. Yamamoto,
- X.F. Yang,
- Z.H. Yang,
- Y.L. Ye,
- R. Yokoyama,
- J. Zenihiro
Affiliations
- X.H. Sun
- School of Science, Huzhou University, Zhejiang 313000, China
- H. Wang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Corresponding author at: Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
- K. Yoneda
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- N. Aoi
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
- 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. Dombrádi
- HUN-REN Institute for Nuclear Research, ATOMKI, Pf. 51, 4001 Debrecen, Hungary
- P. Doornenbal
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Zs. Fülöp
- HUN-REN Institute for Nuclear Research, ATOMKI, Pf. 51, 4001 Debrecen, Hungary
- S. Go
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- T. Hashimoto
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
- E. Ideguchi
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, 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
- J. Lee
- Department of Physics, The University of Hong Kong, Pokfulam, Hong Kong
- H.N. Liu
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Key Laboratory of Beam Technology and Material Modification of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, People's Republic of China
- W.P. Liu
- College of Science, Southern University of Science and Technology, Shenzhen 518055, China
- J.L. Lou
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
- M. Matsushita
- Department of Physics, Rikkyo University, Toshima, Tokyo 171-8501, 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
- 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. Shiga
- Department of Physics, Rikkyo University, Toshima, Tokyo 171-8501, Japan; RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Y.P. Shen
- China Institute of Atomic Energy, P.O. Box 275(10), Beijing 102413, China
- D. Sohler
- HUN-REN Institute for Nuclear Research, ATOMKI, Pf. 51, 4001 Debrecen, Hungary
- D. Steppenbeck
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Y.L. Sun
- School of Physics, Beihang University, 100191 Beijing, China
- S. Takeuchi
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- A. Tamii
- 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.Y. Tian
- Peng Cheng Laboratory, Shenzhen 518055, China
- Zs. Vajta
- HUN-REN Institute for Nuclear Research, ATOMKI, Pf. 51, 4001 Debrecen, Hungary
- T. Yamamoto
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
- X.F. Yang
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China; RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Z.H. Yang
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China; RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Y.L. Ye
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
- R. Yokoyama
- Center for Nuclear Study, University of Tokyo, RIKEN Campus, Wako, Saitama 351-0198, Japan
- J. Zenihiro
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
- Journal volume & issue
-
Vol. 858
p. 139081
Abstract
The fragmentation reactions of neutron-rich unstable nuclei 81Ga and 82Ge at 250 MeV/nucleon have been studied in order to search the optimal mean for the production of very neutron-rich nuclei in the vicinity of 78Ni. The newly measured cross sections were compared with various calculations, showing a good agreement with EPAX3.01. The present work provides experimental insights into the two-step scheme—fragmentation following fission—as a method to produce very neutron-rich nuclei through a combination of ISOL and fragmentation of post-accelerated beams of unstable nuclei. Our results enable an evaluation of the potential of the two-step scheme in the production of very neutron-rich nuclei for the 78Ni region. The two-step scheme using fragmentation of a post-accelerated 81Ga beam could be an option to produce neutron-rich nuclei around 78Ni when the 81Ga beam intensity reaches 1.0×108 pps, compared to the one-step scheme with fission of 238U.
