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Neutron physics of the Re/Os clock. I. Measurement of the (n, γ) cross sections of 186, 187, 188 Os at the CERN n_TOF facility

 

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dc.creator Mosconi, M. es
dc.creator Fujii, K. es
dc.creator Mengoni, A. es
dc.creator Domingo-Pardo, C. es
dc.creator Käppeler, F. es
dc.creator Abbondanno, U. es
dc.creator Wisshak, K. es
dc.creator Capote, Roberto es
dc.creator Lozano Leyva, Manuel Luis es
dc.creator Praena Rodríguez, Javier es
dc.creator Quesada Molina, José Manuel es
dc.date.accessioned 2017-04-19T11:13:33Z
dc.date.available 2017-04-19T11:13:33Z
dc.date.issued 2010
dc.identifier.citation Mosconi, M., Fujii, K., Mengoni, A., Domingo-Pardo, C., Käppeler, F., Abbondanno, U.,...,Quesada Molina, J.M. (2010). Neutron physics of the Re/Os clock. I. Measurement of the (n, γ) cross sections of 186, 187, 188 Os at the CERN n_TOF facility. Physical Review C - Nuclear Physics, 82 (1), 015802-1-015802-10.
dc.identifier.issn 0556-2813 es
dc.identifier.uri http://hdl.handle.net/11441/57885
dc.description.abstract The precise determination of the neutron capture cross sections of 186Os and 187Os is important to define the s-process abundance of 187Os at the formation of the solar system. This quantity can be used to evaluate the radiogenic component of the abundance of 187Os due to the decay of the unstable 187Re (t1/2=41.2 Gyr) and from this to infer the time duration of the nucleosynthesis in our galaxy (Re/Os cosmochronometer). The neutron capture cross sections of 186Os, 187Os, and 188Os have been measured at the CERN n-TOF facility from 1 eV to 1 MeV, covering the entire energy range of astrophysical interest. The measurement has been performed by time-of-flight technique using isotopically enriched samples and two C6D6 scintillation detectors for recording the prompt γ rays emitted in the capture events. Maxwellian averaged capture cross sections have been determined for thermal energies between kT=5 and 100 keV corresponding to all possible s-process scenarios. The estimated uncertainties for the values at 30 keV are 4.1, 3.3, and 4.7% for 186Os, 187Os, and 188Os, respectively. es
dc.description.sponsorship EC FIKW-CT-2000-00107 es
dc.format application/pdf es
dc.language.iso eng es
dc.publisher The American Physical Society es
dc.relation.ispartof Physical Review C - Nuclear Physics, 82 (1), 015802-1-015802-10.
dc.rights Attribution-NonCommercial-NoDerivatives 4.0 Internacional *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/4.0/ *
dc.title Neutron physics of the Re/Os clock. I. Measurement of the (n, γ) cross sections of 186, 187, 188 Os at the CERN n_TOF facility es
dc.type info:eu-repo/semantics/article es
dc.type.version info:eu-repo/semantics/publishedVersion es
dc.rights.accessrights info:eu-repo/semantics/openAccess es
dc.contributor.affiliation Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear es
dc.relation.projectID FIKW-CT-2000-00107 es
dc.relation.publisherversion 10.1103/PhysRevC.82.015802 es
idus.format.extent 10 p. es
dc.journaltitle Physical Review C - Nuclear Physics es
dc.publication.volumen 82 es
dc.publication.issue 1 es
dc.publication.initialPage 015802-1 es
dc.publication.endPage 015802-10 es
dc.contributor.funder European Commission (EC)
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