期刊
PHYSICAL REVIEW C
卷 78, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.78.061302
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资金
- EPSRC (UK)
- AWE plc. (UK)
- EU [506065]
- The Swedish Research Council
- The Polish Ministry of Science and Higher Education
- The Bulgarian Science Fund
- The US Department of Energy
- The Spanish Ministeriode Educacion y Ciencia
- The German BMBF
- The Hungarian Science Foundation
- Italian INFN
- Science and Technology Facilities Council [EP/D072018/1, ST/F012128/1] Funding Source: researchfish
- STFC [EP/D072018/1] Funding Source: UKRI
The four proton-hole nucleus Pt-204 was populated in the fragmentation of an E/A = 1 GeV Pb-208 beam. The yrast structure of Pt-204 has been observed up to angular momentum I = 10h by detecting delayed gamma-ray transitions originating from metastable states. These long-lived excited states have been identified to have spin-parities of I-pi = (10(+)), (7(-)), and (5(-)) and half-lives of T-1/2 = 146(14) ns, 55(3) mu s, and 5.5(7) mu s, respectively. The structure of the magic N = 126 Pt-204 nucleus is discussed and understood in terms of the spherical shell model. The data suggest a revision of the two-body interaction for N = 126, Z < 82, which determines the evolution of nuclear structure toward the r-process waiting point nuclei.
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