1p(3/2) Proton-Hole State in Sn-132 and the Shell Structure Along N=82
- Title
- 1p(3/2) Proton-Hole State in Sn-132 and the Shell Structure Along N=82
- Other Titles
- 2) Proton-Hole State in Sn-132 and the Shell Structure Along N=82
- Author
- 김용균
- Issue Date
- 2014-04
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW LETTERS; APR 1 2014, 112, 13, 6p.
- Abstract
- 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.
- URI
- https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.112.132501http://hdl.handle.net/20.500.11754/51014
- ISSN
- 0031-9007
- DOI
- 10.1103/PhysRevLett.112.132501
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > NUCLEAR ENGINEERING(원자력공학과) > Articles
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