The evidence of N = 16 shell closure and β-delayed neutron emission from 25F
We measured the β -delayed neutron emission from 25 F for the first time at the Facility for Rare Isotope Beams (FRIB). Using combined neutron and γ -ray detector systems of the FRIB Decay Station Initiator (FDSi), we observed β -decay transitions populating neutron unbound states between 4.2 and 8 MeV in 25 Ne. The experimental results led to the revision of the β -decay half-life and β -delayed neutron-emission probability of 25 F. The β -decay strength distribution of 25 F extracted from the data agrees with the shell-model predictions using the USDB and SDPF-M effective interactions. This result indicates that the spherical neutron N = 16 shell gap persists in 25 F and 25 Ne.
Authors
- K. Kolos (ORCID: https://orcid.org/0000-0002-1726-4171)
- B. M. Sherrill (ORCID: https://orcid.org/0000-0002-5093-8190)
- T. H. Ogunbeku (ORCID: https://orcid.org/0000-0002-4442-7757)
- A. A. Doetsch (ORCID: https://orcid.org/0000-0001-7223-789X)
- S.N. Liddick
- R. Grzywacz (ORCID: https://orcid.org/0000-0002-0920-2587)
- J. M. Allmond (ORCID: https://orcid.org/0000-0001-6533-8721)
- K. Siegl (ORCID: https://orcid.org/0000-0002-7778-315X)
- Jennifer Peltier (ORCID: https://orcid.org/0009-0005-7294-2800)
- Z. Y. Xu (ORCID: https://orcid.org/0000-0001-8626-1276)
- S. Neupane (ORCID: https://orcid.org/0000-0003-3339-8353)
- T. Gaballah (ORCID: https://orcid.org/0009-0003-2846-5117)
- R. S. Lubna (ORCID: https://orcid.org/0000-0003-4976-3976)
- T. King (ORCID: https://orcid.org/0000-0003-0649-3275)
- M. Madurga (ORCID: https://orcid.org/0000-0002-8177-4328)
- N. Kitamura (ORCID: https://orcid.org/0009-0002-8345-8481)
- J. Christie (ORCID: https://orcid.org/0000-0002-8653-8236)
- I. Cox (ORCID: https://orcid.org/0000-0002-6807-3658)
- P. Dyszel (ORCID: https://orcid.org/0000-0003-0853-8166)
Institutions
- Lawrence Livermore National Laboratory (US)
- Oak Ridge National Laboratory (US)
- The University of Tokyo (JP)
- University of Tennessee at Knoxville (US)
- Michigan State University (US)
- Mississippi State University (US)
Publication Details
- Journal
- Physics Letters B
- Published
- 2025-05-14
- DOI
- https://doi.org/10.1016/j.physletb.2025.139576
- Citations
- 3
- Primary Topic
- Nuclear physics research studies
- Type
- article
- Field-Weighted Citation Impact
- 5.61
Funders
- National Science Foundation
- U.S. Department of Energy
- Murray State University
- Office of Science
- National Nuclear Security Administration
- Nuclear Physics
- Lawrence Livermore National Laboratory
- Oak Ridge National Laboratory