Testing ab initio nuclear structure in neutron-rich nuclei: Lifetime measurements of second 2+ state in 16C and 20O

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dc.authoridBottoni, Simone/0000-0003-2249-4825
dc.authoridGonzalez Millan, Vicente/0000-0001-6014-2586
dc.authoridTHEISEN, Christophe/0000-0002-8509-1022
dc.authoridKicinska-Habior, Marta/0000-0003-1736-7565
dc.authoridCiemala, Michal/0000-0001-5328-720X
dc.authoridIskra, Lukasz/0000-0003-1495-4174
dc.authoridNyberg, Johan/0000-0001-6996-7605
dc.contributor.authorCiemala, M.
dc.contributor.authorZiliani, S.
dc.contributor.authorCrespi, F. C. L.
dc.contributor.authorLeoni, S.
dc.contributor.authorFornal, B.
dc.contributor.authorMaj, A.
dc.contributor.authorBednarczyk, P.
dc.date.accessioned2024-11-07T13:35:37Z
dc.date.available2024-11-07T13:35:37Z
dc.date.issued2020
dc.departmentNiğde Ömer Halisdemir Üniversitesi
dc.description.abstractTo test the predictive power of ab initio nuclear structure theory, the lifetime of the second 2(+) state in neutron-rich O-20, tau(2(2)(+)) = 150(-30)(+80) fs, and an estimate for the lifetime of the second 2(+) state in C-16 have been obtained for the first time. The results were achieved via a novel Monte Carlo technique that allowed us to measure nuclear state lifetimes in the tens-to-hundreds of femtoseconds range by analyzing the Doppler-shifted gamma-transition line shapes of products of low-energy transfer and deep-inelastic processes in the reaction O-18 (7.0 MeV/u) + Ta-181. The requested sensitivity could only be reached owing to the excellent performances of the Advanced gamma-Tracking Array AGATA, coupled to the PARIS scintillator array and to the VAMOS++ magnetic spectrometer. The experimental lifetimes agree with predictions of ab initio calculations using two- and three-nucleon interactions, obtained with the valence-space in-medium similarity renormalization group for O-20 and with the no-core shell model for C-16. The present measurement shows the power of electromagnetic observables, determined with high-precision gamma spectroscopy, to assess the quality of first-principles nuclear structure calculations, complementing common benchmarks based on nuclear energies. The proposed experimental approach will be essential for short lifetime measurements in unexplored regions of the nuclear chart, including r-process nuclei, when intense beams, produced by Isotope Separation On-Line (ISOL) techniques, become available.
dc.description.sponsorshipItalian Istituto Nazionale di Fisica Nucleare; Polish National Science Centre [2014/14/M/ST2/00738, 2013/08/M/ST2/00257, 2016/22/M/ST2/00269]; RSF [19-42-02014]; Turkish Scientific and Research Council [115F103]; European Unions Horizon 2020 Research and Innovation Program [654002]; Spanish Ministerio de Economia y Competitividad [FPA2017-84756-C4-2-P]; JSPS KAKENHI [18K03639]; MEXT; JICFuS; NSERC; BMBF [05P18RDFN1]; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) [279384907-SFB 1245]; Cluster of Excellence PRISMA+ EXC 2118/1 - DFG within the German Excellence Strategy [39083149]; National Research Council Canada; STFC [ST/P004423/1, ST/L005670/1, ST/L005794/1, 2017 STFC Nuclear Physics CG, 2014 STFC Nuclear Physics CG] Funding Source: UKRI; Grants-in-Aid for Scientific Research [18K03639] Funding Source: KAKEN
dc.description.sponsorshipWe thank S. R. Stroberg for very useful discussions. This work was supported by the Italian Istituto Nazionale di Fisica Nucleare, by the Polish National Science Centre under Contracts No. 2014/14/M/ST2/00738, No. 2013/08/M/ST2/00257, and No. 2016/22/M/ST2/00269, and by RSF Grant No. 19-42-02014. This project has received funding from the Turkish Scientific and Research Council (Project No. 115F103) and from the European Unions Horizon 2020 Research and Innovation Program under Grant Agreement No. 654002. This work was also supported by the Spanish Ministerio de Economia y Competitividad under Contract No. FPA2017-84756-C4-2-P, by the JSPS KAKENHI Grant No. 18K03639, MEXT as a priority issue on a post-K computer (Elucidation of the fundamental laws and evolution of the universe), JICFuS, NSERC, the BMBF under Contract No. 05P18RDFN1, the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)-Projektnummer No. 279384907-SFB 1245, and the Cluster of Excellence PRISMA+ EXC 2118/1 funded by DFG within the German Excellence Strategy (Project No. 39083149). TRIUMF receives funding via a contribution through the National Research Council Canada.
dc.identifier.doi10.1103/PhysRevC.101.021303
dc.identifier.issn2469-9985
dc.identifier.issn2469-9993
dc.identifier.issue2
dc.identifier.scopus2-s2.0-85082748861
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1103/PhysRevC.101.021303
dc.identifier.urihttps://hdl.handle.net/11480/16589
dc.identifier.volume101
dc.identifier.wosWOS:000517222700001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherAmer Physical Soc
dc.relation.ispartofPhysical Review C
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_20241106
dc.subjectShell-Model
dc.subjectCollectivity
dc.subjectPerformance
dc.subjectForces
dc.titleTesting ab initio nuclear structure in neutron-rich nuclei: Lifetime measurements of second 2+ state in 16C and 20O
dc.typeArticle

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