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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.date.accessioned2010-12-16T10:40:45Z
dc.date.available2010-12-16T10:40:45Z
dc.date.created2006
dc.date.issued2006
dc.identifier.citationCalviño, F. [et al.]. Astrophysical Implications of the139La(n,gamma) and151Sm(n,gamma) Cross Section Measured at n_TOF. A: Nuclei in the Cosmos. "NIC IX: International Symposium on Nuclear Astrophysics — Nuclei in the Cosmos — IX". CERN Geneva: 2006, p. 1-7.
dc.identifier.isbn1824-8039
dc.identifier.urihttp://hdl.handle.net/2117/10632
dc.description.abstractThe nuclear resonance parameters and the capture cross section of the neutron magic isotope 139La and of the radioactive isotope 151Sm have been measured relative to 197Au in the energy range of 0.6 eV-1 MeV at neutron time-of-flight (n_TOF) facility at CERN. The description of the experimental apparatus is followed by the presentation of the data analysis procedures consisting in the efficiency correction by means of the Pulse Height Weighting Function technique, in the determination of different background components and in their subtraction. We extracted the resonance parameters and the related nuclear quantities such as the resonance integral, the average gamma width, the nuclear level densities and the neutron strength function. These results improve the accuracy of the existing data. The deduced values of the Maxwellianaveraged capture cross section, together with the most recent spectroscopic observations in low metallicity stars, provide key indications for modelling the nucleosynthesis and the chemical evolution of heavy nuclei in the Galaxy.
dc.format.extent7 p.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Física
dc.subject.lcshNeutron cross sections
dc.subject.lcshRadioisotopes
dc.subject.lcshTime-of-flight mass spectrometry
dc.subject.lcshNucleosynthesis
dc.titleAstrophysical Implications of the139La(n,gamma) and151Sm(n,gamma) Cross Section Measured at n_TOF
dc.typeConference report
dc.subject.lemacNeutrons -- Seccions
dc.subject.lemacNucleosíntesi
dc.subject.lemacIsòtops
dc.contributor.groupUniversitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions
dc.relation.publisherversionhttp://pos.sissa.it/archive/conferences/028/138/NIC-IX_138.pdf
dc.rights.accessOpen Access
drac.iddocument4458046
dc.description.versionPostprint (published version)
upcommons.citation.authorCalviño, F.; Cortes, G.; Poch, A.; Pretel, M.
upcommons.citation.contributorNuclei in the Cosmos
upcommons.citation.pubplaceCERN Geneva
upcommons.citation.publishedtrue
upcommons.citation.publicationNameNIC IX: International Symposium on Nuclear Astrophysics — Nuclei in the Cosmos — IX
upcommons.citation.startingPage1
upcommons.citation.endingPage7


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