Publication: β-decay properties in the Cs decay chain
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2018
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IOP Publishing Ltd
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Abstract
The study of the decay of neutron-rich Cs isotopes has two main objectives: on one side beta decay is a perfect tool to access the low-spin structures in the daughter Ba nuclei, where the evolution of octupole deformed shapes can be followed, while, on the other hand, the study of the gross properties of these decays, in terms of decay rates and branching to delayed-neutron emission, are fundamental inputs for the modelling of the r-process in the Rare-Earth Elements peak. Results obtained at CERN-ISOLDE are discussed within this framework and compared to existing data and predictions from state-of-the-art nuclear models.
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International Spring Seminar on Nuclear Physics - Current Problems and Prospects for Nuclear Structure (12th. 2017. Italy). The authors are indebted to the late Prof. Henryk Mach whose experience helped in designing and performing the experiment. The IDS collaboration acknowledges financial support from: Istituto Nazionale di Fisica Nucleare, the Italian "Programmi di Ricerca Scientifica di Rilevante Interesse Nazionale" (PRIN) contract number 2001024324 01302, the European Union seventh framework through ENSAR, contract no. 262010, the European Unions Horizon 2020 Framework research and innovation programme under grant agreement no. 654002 (ENSAR2), the FATIMA-NuPNET network via the PRI-PIMNUP-2011-1338 project, the Romanian IFA Grant CERN/ISOLDE and Romanian PN-II-RU-TE-2014-4-2003, the Spanish MINECO projects reference numbers FPA2013-41467-P, FPA2015-64969-P, FPA2015-65929 and FIS2015-63770, Spanish Grants No. FIS-2014-53434-P MINECO and Programa Ramón y Cajal 2012 No. 11420, Spanish MINECO grant IJCI-2014-19172 and the MINECO project FPA2014-52823-C2-1-P the German BMBF under contract 05P15PKCIA, contract 05P15PKFNA, and "Verbundprojekt 05P2015", the FWO-Vlaanderen (Belgium) and the IAP Belgian Science Policy (BriX network P7/12). V.Ch. and Z.P. acknowledge support by the polish grant of Narodowe Centrum Nauki nr 2015/18/M/ST2/00523.