期刊
PHYSICAL REVIEW C
卷 102, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.102.014328
关键词
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资金
- ISOLDE
- European Union Horizon 2020 research and innovation programme [654002]
- Spanish government [FPA201565035-P, FPA-64969-P, FPA2017-87568-P, RTI2018-098868-B-I00]
- Polish National Science Center [UMO-2015/18/E/ST2/00217, UMO-2015/18/M/ST2/00523, UMO2019/33/N/ST2/03023]
- Portuguese FCT [CERN/FIS-NUC/0004/2015]
- German BMBF [05P18PKCIA]
- Romanian IFA Grant CERN/ISOLDE
- U.K. Science and Technology Facilities Council
- Research Foundation Flanders (FWO, Belgium)
- Excellence of Science program (EOS, FWO-FNRS, Belgium)
- BOF KU Leuven [GOA/2015/010]
- Universidad Complutense de Madrid [CT27/16-CT28/16]
- STFC [2014 STFC Nuclear Physics CG, ST/P003885/1, ST/L005727/1, ST/M001636/1, ST/L005670/1, 2017 STFC Nuclear Physics CG, ST/P004598/1] Funding Source: UKRI
The structure of the doubly magic Sn-132(50)82 has been investigated at the ISOLDE facility at CERN, populated both by the beta(-) decay of In-132 and beta(-)-delayed neutron emission of In-133. The level scheme of Sn-13(2) is greatly expanded with the addition of 68 gamma transitions and 17 levels observed for the first time in the beta decay. The information on the excited structure is completed by new gamma transitions and states populated in the beta-n decay of In-133. Improved delayed neutron emission probabilities are obtained both for In-132 and In-133. Level lifetimes are measured via the advanced time-delayed beta gamma gamma(t) fast-timing method. An interpretation of the level structure is given based on the experimental findings and the particle-hole configurations arising from core excitations both from the N = 82 and Z = 50 shells, leading to positive- and negative-parity particle-hole multiplets. The experimental information provides new data to challenge the theoretical description of Sn-132.
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