Towards lifetime measurement of excited states in 120Sn using thermal neutron capture
The intruder bands in Sn isotopes, based on the 2p-2h excitation across the Z = 50 proton shell gap, are well-known to exhibit shape coexistence near the neutron mid-shell region. The spectroscopic signatures are enhanced E 0 transitions between the 0 + band heads and enhanced E 2 transitions within rotational bands built on these 0 + band heads. However, lifetime information for the excited 0 + states is incomplete. Experimental details for the neutron-capture reaction and analysis procedures are described, and the first result of the 2 1 + lifetime demonstrates proper calibration of the setup.
Authors
- S. Pannu
- C. Andreoiu (ORCID: https://orcid.org/0000-0002-0196-2792)
- V. Karayonchev (ORCID: https://orcid.org/0000-0002-6497-0175)
- E. Taddei (ORCID: https://orcid.org/0000-0001-8524-3965)
- A. Esmaylzadeh
- P. Spagnoletti
- P.E. Garrett
- J.-M. Régis
- G. Colombi (ORCID: https://orcid.org/0000-0002-8053-9326)
- C. Michelagnoli (ORCID: https://orcid.org/0000-0002-2661-6562)
- J. Jolie (ORCID: https://orcid.org/0000-0003-4617-3786)
- M. Beuschlein (ORCID: https://orcid.org/0009-0001-3183-7503)
- M. Ley (ORCID: https://orcid.org/0000-0003-1453-070X)
- C. M. Petrache (ORCID: https://orcid.org/0000-0001-8419-1390)
- F. Wu (ORCID: https://orcid.org/0000-0003-2739-2377)
- J. M. Daugas
- M. von Tresckow
- L. Domenichetti
Institutions
- Argonne National Laboratory (US)
- Centre National de la Recherche Scientifique (FR)
- Simon Fraser University (CA)
- University of Cologne (DE)
- Université Paris-Saclay (FR)
- Technische Universität Darmstadt (DE)
- Institut Laue-Langevin (FR)
- Institut National de Physique Nucléaire et de Physique des Particules (FR)
- Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (FR)
- University of Guelph (CA)
- University of the Western Cape (ZA)
Publication Details
- Journal
- Nuclear Physics A
- Published
- 2025-04-15
- DOI
- https://doi.org/10.1016/j.nuclphysa.2025.123105
- Citations
- 1
- Primary Topic
- Nuclear physics research studies
- Type
- article
- Field-Weighted Citation Impact
- 1.87
Funders
- U.S. Department of Energy
- Natural Sciences and Engineering Research Council of Canada