Investigating the collectivity of intruder states along N=49 isotones
Intruder states that originate from the promotion of neutrons across the N=50 shell gap are observed along the N=49 isotones ( 79 Zn, 81 Ge, 83 Se, 85 Kr), with the lowest energy in 83 Se. The reduction of the N=50 shell gap towards Ni favors the lowering in the energy of these states. Moreover, since the Se nucleus (Z=34) is in the middle of the proton fp-shell (28≤Z≤40), it should have the maximum quadrupole correlations, lowering further the energy of these deformed configurations. This makes Se a good candidate for understanding the collectivity of the particle-hole intruder states in this region. Such information could also be used as a testing ground for theoretical models aiming to describe the region in the vicinity of 78 Ni. An experiment aiming to measure the lifetime of the 540-keV 1/2 + and 1100-keV 3/2 + intruder states of 83 Se was performed at LNL and is reported in this work.
Authors
- K. Rezynkina (ORCID: https://orcid.org/0000-0002-3017-6440)
- S. M. Lenzi (ORCID: https://orcid.org/0000-0002-4666-8431)
- S. Pigliapoco (ORCID: https://orcid.org/0000-0002-5956-640X)
- A. Nannini (ORCID: https://orcid.org/0000-0003-0659-7648)
- A. Goasduff (ORCID: https://orcid.org/0000-0003-3453-3297)
- R. Menegazzo (ORCID: https://orcid.org/0000-0002-3060-5276)
- J. Ha (ORCID: https://orcid.org/0000-0003-4843-8573)
- G. Zhang (ORCID: https://orcid.org/0009-0002-8531-4211)
- A. Gozzelino (ORCID: https://orcid.org/0000-0002-6284-1126)
- J. J. Valiente-Dobón (ORCID: https://orcid.org/0000-0002-8651-1957)
- D. Bazzacco (ORCID: https://orcid.org/0000-0003-3052-2988)
- S. Capra (ORCID: https://orcid.org/0000-0002-3330-4145)
- D. Brugnara (ORCID: https://orcid.org/0000-0002-8644-5355)
- I. Zanon (ORCID: https://orcid.org/0000-0003-2773-8702)
- M. Loriggiola
- S. Bottoni (ORCID: https://orcid.org/0000-0003-2249-4825)
- F. Recchia (ORCID: https://orcid.org/0000-0002-8428-0112)
- G. Benzoni (ORCID: https://orcid.org/0000-0002-7938-0338)
- S. Ziliani (ORCID: https://orcid.org/0000-0001-9202-8788)
- D. R. Napoli (ORCID: https://orcid.org/0000-0002-8154-6958)
- A. Gottardo (ORCID: https://orcid.org/0000-0002-0390-5767)
- T. Marchi (ORCID: https://orcid.org/0000-0001-7339-8185)
- D. Mengoni (ORCID: https://orcid.org/0000-0001-7219-2548)
- J. Pellumaj (ORCID: https://orcid.org/0000-0002-7186-6050)
- S. Carturan (ORCID: https://orcid.org/0000-0002-6702-2867)
- G. de Angelis (ORCID: https://orcid.org/0000-0002-0506-3815)
- R. M. Pérez-Vidal (ORCID: https://orcid.org/0000-0002-4075-4152)
Institutions
- University of Padua (IT)
- Universitat de València (ES)
- University of Milan (IT)
- University of Ferrara (IT)
- Instituto de Física Corpuscular (ES)
- Istituto Nazionale di Fisica Nucleare, Sezione di Padova (IT)
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro (IT)
- Istituto Nazionale di Fisica Nucleare, Sezione di Firenze (IT)
- Istituto Nazionale di Fisica Nucleare, Sezione di Milano (IT)
- KU Leuven (BE)
Publication Details
- Journal
- Nuclear Physics A
- Published
- 2025-04-23
- DOI
- https://doi.org/10.1016/j.nuclphysa.2025.123125
- Primary Topic
- Advanced Chemical Physics Studies
- Type
- article
- Field-Weighted Citation Impact
- 0.00