Isomer spectroscopy of neutron-rich $$^{165,167}$$Tb
- Univ. of Surrey, Guildford (United Kingdom)
- Univ. of Surrey, Guildford (United Kingdom); National Physical Lab., Teddington (United Kingdom)
- RIKEN Nishina Center, Saitama (Japan)
- Beihang Univ., Beijing (China)
- Univ. of Surrey, Guildford (United Kingdom); National Physical Lab., Teddington (United Kingdom); RIKEN Nishina Center, Saitama (Japan)
- Univ. of Hong Kong (Hong Kong); KU Leuven, Leuven (Belgium)
- RIKEN Nishina Center, Saitama (Japan); Univ. of Tokyo, Tokyo (Japan)
- RIKEN Nishina Center, Saitama (Japan); Tohoku Univ., Miyagi (Japan)
- Univ. of Brighton (United Kingdom)
- Australian National Univ., Canberra, ACT (Australia)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Osaka Univ., Toyonaka (Japan)
- RIKEN Nishina Center, Saitama (Japan); Peking Univ., Beijing (China)
- Xin Jiaotong Univ. (China)
- Peking Univ., Beijing (China)
- RIKEN Nishina Center, Saitama (Japan); Hungarian Academy of Sciences, Debrecen (Hungary)
- Chung-Ang Univ., Seoul (Republic of Korea)
- Univ. of Hong Kong (Hong Kong)
- RIKEN Nishina Center, Saitama (Japan); VNU Hanoi Univ. of Science, Hanoi (Vietnam)
- Almajmaah Univ. (Saudi Arabia)
- Sungkyunkwan Univ., Suwon (Korea)
- Hungarian Academy of Sciences, Debrecen (Hungary)
- KU Leuven, Leuven (Belgium); Univ. of Edinburgh, Edinburgh (United Kingdom)
- Univ. of Edinburgh, Edinburgh (United Kingdom)
- Osaka Univ., Toyonaka (Japan); Osaka Univ. Osaka (Japan)
- GSI Helmholtzzentrum fur Schwerionenforschung GmbH, Darmstadt (Germany)
- Hosea Univ., Chungnam (Korea)
- Tohoku Univ., Miyagi (Japan)
- Univ. of Brighton (United Kingdom); Horia Hulubei National Institute of Physics and Engineering, Bucharest (Romania)
- Univ. College Dublin, Dublin (Ireland)
- Instituto Nazionale di Fisica Nucleare, Legnaro (Italy)
We present information on the excited states in the prolate-deformed, neutron-rich nuclei 165,167Tb100,102. The nuclei of interest were synthesised following in-flight fission of a 345 MeV per nucleon 238U primary beam on a 2 mm 9Be target at the Radioactive Ion-Beam Factory (RIBF), RIKEN, Japan. The exotic nuclei were separated and identified event-by-event using the BigRIPS separator, with discrete energy gamma-ray decays from isomeric states with half-lives in the μs regime measured using the EURICA gamma-ray spectrometer. Metastable-state decays are identified in 165Tb and 167Tb and interpreted as arising from hindered E1 decay from the 72–[523] single quasi-proton Nilsson configuration to rotational states built on the 32–[411] single quasi-proton ground state. Lastly, these data correspond to the first spectroscopic information in the heaviest, odd-A terbium isotopes reported to date and provide information on proton Nilsson configurations which reside close to the Fermi surface as the 170Dy doubly-midshell nucleus is approached.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1364650
- Journal Information:
- Acta Physica Polonica. Series B, Vol. 48, Issue 3; ISSN 0587-4254
- Publisher:
- Jagiellonian UniversityCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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