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dc.contributor.authorCalviño Tavares, Francisco
dc.contributor.authorCortés Rossell, Guillem Pere
dc.contributor.authorPoch Parés, Agustí
dc.contributor.authorPretel Sánchez, Carme
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear
dc.identifier.citationCalviño, F. [et al.]. Capture cross section measurements of 186,187,188-Os at n TOF: the resolved resonance region. A: International Conference on Nuclear Data for Science and Technology. "2007 International Conference on Nuclear Data for Science and Technology". Nice: EDP Sciences, 2007, p. 599-602.
dc.description.abstractThe neutron capture cross sections of 186,187,188Os have been measured at the CERN neutron time-of-flight facility, n TOF, in the neutron energy range from 1 eV up to 1MeV. In this contribution, we report the results of the analysis of the resolved resonance region (RRR). Resonance parameters have been extracted from a full R-matrix fit of the capture yields with the SAMMY code. A statistical analysis has been performed and the related average resonance parameters are derived. This information is crucial for a complete understanding and modeling in terms of the Hauser-Feshbach statistical model of the capture and inelastic reaction channels, required for the evaluation of the stellar reaction rates of these isotopes. Maxwellian average cross sections for the range of temperatures relevant for s-process nucleosynthesis have been derived from the combined information of the experimental data in the resolved and unresolved resonance regions. A brief account of the implications of this analysis in the estimation of the s-process component of the 187Os abundance and the related impact on the estimates of the time-duration of the galactic nucleosynthesis through the Re/Os clock is given.
dc.format.extent4 p.
dc.publisherEDP Sciences
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Física
dc.subject.lcshNeutron cross sections
dc.titleCapture cross section measurements of 186,187,188-Os at n TOF: the resolved resonance region
dc.typeConference report
dc.subject.lemacReaccions nuclears
dc.contributor.groupUniversitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
upcommons.citation.authorCalviño, F.; Cortes, G.; Poch, A.; Pretel, M.
upcommons.citation.contributorInternational Conference on Nuclear Data for Science and Technology
upcommons.citation.publicationName2007 International Conference on Nuclear Data for Science and Technology

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