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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.accessioned2011-01-21T11:27:19Z
dc.date.available2011-01-21T11:27:19Z
dc.date.created2007-10
dc.date.issued2007-10
dc.identifier.citationCalviño, F. [et al.]. Measurement of the radiative neutron capture cross section of 206Pb and its astrophysical implications. "Physical review C", Octubre 2007, vol. 76, núm. 045805, p. 04580501-04580510.
dc.identifier.issn0556-2813
dc.identifier.urihttp://hdl.handle.net/2117/11138
dc.description.abstractThe (n, γ ) cross section of 206Pb has been measured at the CERN n TOF facility with high resolution in the energy range from 1 eV to 620 keV by using two optimized C6D6 detectors. In the investigated energy interval about 130 resonances could be observed, from which 61 had enough statistics to be reliably analyzed via the R-matrix analysis code SAMMY. Experimental uncertainties were minimized, in particular with respect to (i) angular distribution effects of the prompt capture γ -rays, and to (ii) the TOF-dependent background due to sample-scattered neutrons. Other background components were addressed by background measurements with an enriched 208Pb sample. The effect of the lower energy cutoff in the pulse height spectra of the C6D6 detectors was carefully corrected via Monte Carlo simulations. Compared to previous 206Pb values, the Maxwellian averaged capture cross sections derived from these data are about 20% and 9% lower at thermal energies of 5 keV and 30 keV, respectively. These newresults have a direct impact on the s-process abundance of 206Pb,which represents an important test for the interpretation of the cosmic clock based on the decay of 238U.
dc.format.extent10 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.lcshRadiative capture
dc.subject.lcshStars--Structure.
dc.titleMeasurement of the radiative neutron capture cross section of 206Pb and its astrophysical implications
dc.typeArticle
dc.subject.lemacRadiació
dc.subject.lemacEstels -- Estructura
dc.contributor.groupUniversitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions
dc.identifier.doi10.1103/PhysRevC.76.045805
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://prc.aps.org/abstract/PRC/v76/i4/e045805
dc.rights.accessRestricted access - publisher's policy
drac.iddocument1228114
dc.description.versionPostprint (published version)
upcommons.citation.authorCalviño, F.; Cortes, G.; Poch, A.; Pretel, M.
upcommons.citation.publishedtrue
upcommons.citation.publicationNamePhysical review C
upcommons.citation.volume76
upcommons.citation.number045805
upcommons.citation.startingPage04580501
upcommons.citation.endingPage04580510


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