Observation of a us isomer in 134-In: Proton-neutron coupling “southeast” of 132-Sn
We report on the observation of a microsecond isomeric state in the single-proton-hole, three-neutron-particlenucleus134In. The nuclei of interest were produced by in-flight fission of a238U beam at the Radioactive IsotopeBeam Factory at RIKEN. The isomer depopulates through a¿ray of energy 56.7(1)...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2019 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/174298 |
| Acceso en línea: | https://hdl.handle.net/2117/174298 https://dx.doi.org/10.1103/PhysRevC.100.011302 |
| Access Level: | acceso abierto |
| Palabra clave: | Neutrons Nuclear physics Decay Neutron rich RIKEN Física nuclear Àrees temàtiques de la UPC::Física Àrees temàtiques de la UPC::Energies::Energia nuclear |
| Sumario: | We report on the observation of a microsecond isomeric state in the single-proton-hole, three-neutron-particlenucleus134In. The nuclei of interest were produced by in-flight fission of a238U beam at the Radioactive IsotopeBeam Factory at RIKEN. The isomer depopulates through a¿ray of energy 56.7(1) keV and with a half-life ofT1/2=3.5(4)µs. Based on the comparison with shell-model calculations, we interpret the isomer as theIp=5-member of thep0g-19/2¿¿1f37/2multiplet, decaying to theIp=7-ground state with a reduced-transitionprobability ofB(E2; 5-¿7-)=0.53(6) W.u.Observation of this isomer, and lack of evidence in the currentwork for aIp=5-isomer decay in132In, provides a benchmark of the proton-neutron interaction in the regionof the nuclear chart “southeast” of132Sn, where experimental information on excited states is sparse. |
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