Show simple item record

dc.contributor.authorDamone, L.
dc.contributor.authorBarbagallo, Massimo
dc.contributor.authorMastromarco, M.
dc.contributor.authorCalviño Tavares, Francisco
dc.contributor.authorCasanovas Hoste, Adrià
dc.contributor.authorCortés Rossell, Guillem Pere
dc.contributor.authorTarifeño Saldivia, Ariel Esteban
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física
dc.contributor.otherUniversitat Politècnica de Catalunya. Institut de Tècniques Energètiques
dc.date.accessioned2018-10-29T10:53:06Z
dc.date.available2018-10-29T10:53:06Z
dc.date.issued2018-07-24
dc.identifier.citationDamone, L., Barbagallo, M., Mastromarco, M., Calviño, F., Casanovas, A., Cortes, G., Tarifeño, A. 7Be(n , p)7Li reaction and the cosmological lithium problem: measurement of the cross section in a wide energy range at n_TOF at CERN. "Physical review letters", 24 Juliol 2018, vol. 212, núm. 4, p. 042701-1-042701-7.
dc.identifier.issn0031-9007
dc.identifier.otherhttps://arxiv.org/pdf/1806.03050.pdf
dc.identifier.urihttp://hdl.handle.net/2117/123127
dc.description.abstractWe report on the measurement of the 7Be(n,p)7Li cross section from thermal to approximately 325 keV neutron energy, performed in the high-flux experimental area (EAR2) of the n_TOF facility at CERN. This reaction plays a key role in the lithium yield of the big bang nucleosynthesis (BBN) for standard cosmology. The only two previous time-of-flight measurements performed on this reaction did not cover the energy window of interest for BBN, and they showed a large discrepancy between each other. The measurement was performed with a Si telescope and a high-purity sample produced by implantation of a 7Be ion beam at the ISOLDE facility at CERN. While a significantly higher cross section is found at low energy, relative to current evaluations, in the region of BBN interest, the present results are consistent with the values inferred from the time-reversal 7Li(p,n)7Be reaction, thus yielding only a relatively minor improvement on the so-called cosmological lithium problem. The relevance of these results on the near-threshold neutron production in the p+7Li reaction is also discussed.
dc.language.isoeng
dc.publisherAmerican Institute of Physics (AIP)
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.subjectÀrees temàtiques de la UPC::Energies::Energia nuclear
dc.subject.lcshNeutrons
dc.subject.lcshNucleosynthesis
dc.subject.otherNeutron
dc.subject.otherNuclear reaction
dc.subject.othernTOF
dc.subject.otherCERN
dc.subject.otherNucleosynthesis
dc.title7Be(n , p)7Li reaction and the cosmological lithium problem: measurement of the cross section in a wide energy range at n_TOF at CERN
dc.typeArticle
dc.subject.lemacNeutrons
dc.subject.lemacNucleosíntesi
dc.contributor.groupUniversitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group
dc.identifier.doi10.1103/PhysRevLett.121.042701
dc.relation.publisherversionhttps://journals.aps.org/prl/pdf/10.1103/PhysRevLett.121.042701
dc.rights.accessOpen Access
drac.iddocument23299145
dc.description.versionPostprint (published version)
dc.relation.projectidinfo:eu-repo/grantAgreement/MICINN/6PN/ FPA2008-04972-C03-03
upcommons.citation.authorDamone, L., Barbagallo, M., Mastromarco, M., Calviño, F., Casanovas, A., Cortes, G., Tarifeño, A.
upcommons.citation.publishedtrue
upcommons.citation.publicationNamePhysical review letters
upcommons.citation.volume212
upcommons.citation.number4
upcommons.citation.startingPage042701-1
upcommons.citation.endingPage042701-7


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record

Except where otherwise noted, content on this work is licensed under a Creative Commons license: Attribution-NonCommercial-NoDerivs 3.0 Spain