Journal
PHYSICAL REVIEW LETTERS
Volume 112, Issue 13, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.112.132501
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Funding
- Spanish Ministerio de Ciencia e Innovacion [FPA2009-13377-C02, FPA2011-29854-C04]
- Generalitat Valenciana (Spain) [PROMETEO/2010/101]
- Japanese government KAKENHI [25247045]
- National Research Foundation of Korea (NRF)
- Korea government (MEST) [NRF-2012R1A1A1041763]
- Priority Centers Research Program in Korea [2009-0093817]
- OTKA [K-100835]
- European Commission [300096]
- U.S. Department of Energy, Office of Nuclear Physics [DE-AC02-06CH11357]
- German BMBF [05P12RDCIA, 05P12RDNUP]
- HIC for FAIR
- Grants-in-Aid for Scientific Research [26800117, 24105004, 24740188, 13J01876] Funding Source: KAKEN
- STFC [ST/J000051/1] Funding Source: UKRI
- National Research Foundation of Korea [2009-0093817] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- Science and Technology Facilities Council [ST/J000051/1] Funding Source: researchfish
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A low-lying state in In-131(82), the one-proton hole nucleus with respect to double magic Sn-132, was observed by its gamma decay to the I-pi 1/2(-) beta-emitting isomer. We identify the new state at an excitation energy of E-x = 1353 keV, which was populated both in the beta decay of Cd-131(83) and after beta-delayed neutron emission from Cd-132(84), as the previously unknown pi p(3/2) single-hole state with respect to the Sn-132 core. Exploiting this crucial new experimental information, shell-model calculations were performed to study the structure of experimentally inaccessible N = 82 isotones below Sn-132. The results evidence a surprising absence of proton subshell closures along the chain of N = 82 isotones. The consequences of this finding for the evolution of the N = 82 shell gap along the r-process path are discussed.
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