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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.accessioned2011-01-21T12:49:53Z
dc.date.available2011-01-21T12:49:53Z
dc.date.created2006-03
dc.date.issued2006-03
dc.identifier.citationCalviño, F. [et al.]. Measurement of the Sm-151(n,gamma) cross section from 0.6 eV to 1 MeV via the neutron time-of-flight technique at the CERN n_TOF facility. "Physical review C", Març 2006, vol. 73, núm. 034604, p. 03460401-03460418.
dc.identifier.issn0556-2813
dc.identifier.urihttp://hdl.handle.net/2117/11150
dc.description.abstractThe 151Sm(n, γ ) cross section was measured with the time-of-flight technique from 0.6 eV up to 1 MeV relative to the Au standard with an overall uncertainty of typically 6%. Neutrons were produced by spallation at the innovative n TOF facility at CERN; the γ rays from capture events were detected with organic C6D6 scintillators. Experimental setup and data analysis procedures are described with emphasis on the corrections for detection efficiency, background subtraction, and neutron flux determination. At low energies, resonances could be resolved up to about 1 keV, yielding a resonance integral of 3575 ± 210 b, an average s-wave resonance spacing of D0 = 1.49 ± 0.07 eV, and a neutron strength function of S0 = (3.87 ± 0.33) × 10−4.Maxwellian-averaged capture cross sections are reported for thermal energies between 5 and 100 keV. These results are of relevance for nuclear structure studies, nuclear astrophysics, and nuclear technology.The newvalue of theMaxwellian-averaged cross section at kT = 30 keV is 3.08 ± 0.15 b, considerably larger than previous theoretical estimates, and provides better constraints for the thermodynamic conditions during the occurrence of the slow neutron capture process in low-mass stars during their asymptotic giant branch phase.
dc.format.extent18 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.lcshComputer simulation
dc.titleMeasurement of the Sm-151(n,gamma) cross section from 0.6 eV to 1 MeV via the neutron time-of-flight technique at the CERN n_TOF facility
dc.typeArticle
dc.subject.lemacRadiació
dc.subject.lemacSimulació per ordinador
dc.contributor.groupUniversitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions
dc.identifier.doi10.1103/PhysRevC.73.034604
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://prc.aps.org/abstract/PRC/v73/i3/e034604
dc.rights.accessRestricted access - publisher's policy
drac.iddocument1227850
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.volume73
upcommons.citation.number034604
upcommons.citation.startingPage03460401
upcommons.citation.endingPage03460418


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