Nuclear physics for the Re/Os clock

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dc.contributor.authorMosconi, M.en
dc.contributor.authorHeil, M.en
dc.contributor.authorKappeler, F.en
dc.contributor.authorPlag, R.en
dc.contributor.authorMengoni, A.en
dc.contributor.authorFujii, K.en
dc.contributor.authorDomingo-Pardo, C.en
dc.contributor.authorAerts, G.en
dc.contributor.authorTerlizzi, R.en
dc.contributor.authorGallino, R.en
dc.contributor.authorAbbondanno, U.en
dc.contributor.authorAlvarez, H.en
dc.contributor.authorAlvarez-Velarde, F.en
dc.contributor.authorAndriamonje, S.en
dc.contributor.authorAndrzejewski, J.en
dc.contributor.authorAssimakopoulos, P.en
dc.contributor.authorAudouin, L.en
dc.contributor.authorBadurek, G.en
dc.contributor.authorBaumann, P.en
dc.contributor.authorBecvar, F.en
dc.contributor.authorBerthoumieux, E.en
dc.contributor.authorCalvino, F.en
dc.contributor.authorCalviani, M.en
dc.contributor.authorCano-Ott, D.en
dc.contributor.authorCapote, R.en
dc.contributor.authorCarrapico, C.en
dc.contributor.authorCennini, P.en
dc.contributor.authorChepel, V.en
dc.contributor.authorColonna, N.en
dc.contributor.authorCortes, G.en
dc.contributor.authorCouture, A.en
dc.contributor.authorCox, J.en
dc.contributor.authorDahlfors, M.en
dc.contributor.authorDavid, S.en
dc.contributor.authorDillmann, I.en
dc.contributor.authorDridi, W.en
dc.contributor.authorDuran, I.en
dc.contributor.authorEleftheriadis, C.en
dc.contributor.authorEmbid-Segura, M.en
dc.contributor.authorFerrant, L.en
dc.contributor.authorFerrari, A.en
dc.contributor.authorFerreira-Marques, R.en
dc.contributor.authorFurman, W.en
dc.contributor.authorGoncalves, I.en
dc.contributor.authorGonzalez-Romero, E.en
dc.contributor.authorGramegna, F.en
dc.contributor.authorGuerrero, C.en
dc.contributor.authorGunsing, F.en
dc.contributor.authorHaas, B.en
dc.contributor.authorHaight, R.en
dc.contributor.authorHerrera-Martinez, A.en
dc.contributor.authorIgashira, M.en
dc.contributor.authorJericha, E.en
dc.contributor.authorKadi, Y.en
dc.contributor.authorKaradimos, D.en
dc.contributor.authorKaramanis, D.en
dc.contributor.authorKerveno, M.en
dc.contributor.authorKoehler, P.en
dc.contributor.authorKossionides, E.en
dc.contributor.authorKrticka, M.en
dc.contributor.authorLamboudis, C.en
dc.contributor.authorLeeb, H.en
dc.contributor.authorLindote, A.en
dc.contributor.authorLopes, I.en
dc.contributor.authorLozano, M.en
dc.contributor.authorLukic, S.en
dc.contributor.authorMarganiec, J.en
dc.contributor.authorMarrone, S.en
dc.contributor.authorMassimi, C.en
dc.contributor.authorMastinu, P.en
dc.contributor.authorMilazzo, P. M.en
dc.contributor.authorNeves, F.en
dc.contributor.authorOberhummer, H.en
dc.contributor.authorO'Brien, S.en
dc.contributor.authorPancin, J.en
dc.contributor.authorPapachristodoulou, C.en
dc.contributor.authorPapadopoulos, C.en
dc.contributor.authorParadela, C.en
dc.contributor.authorPatronis, N.en
dc.contributor.authorPavlik, A.en
dc.contributor.authorPavlopoulos, P.en
dc.contributor.authorPerrot, L.en
dc.contributor.authorPigni, M. T.en
dc.contributor.authorPlompen, A.en
dc.contributor.authorPlukis, A.en
dc.contributor.authorPoch, A.en
dc.contributor.authorPretel, C.en
dc.contributor.authorQuesada, J.en
dc.contributor.authorRauscher, T.en
dc.contributor.authorReifarth, R.en
dc.contributor.authorRubbia, C.en
dc.contributor.authorRudolf, G.en
dc.contributor.authorRullhusen, P.en
dc.contributor.authorSalgado, J.en
dc.contributor.authorSantos, C.en
dc.contributor.authorSarchiapone, L.en
dc.contributor.authorSavvidis, I.en
dc.contributor.authorStephan, C.en
dc.contributor.authorTagliente, G.en
dc.contributor.authorTain, J. L.en
dc.contributor.authorTassan-Got, L.en
dc.contributor.authorTavora, L.en
dc.contributor.authorVannini, G.en
dc.contributor.authorVaz, P.en
dc.contributor.authorVentura, A.en
dc.contributor.authorVillamarin, D.en
dc.contributor.authorVincente, M. C.en
dc.contributor.authorVlachoudis, V.en
dc.contributor.authorVlastou, R.en
dc.contributor.authorVoss, F.en
dc.contributor.authorWalter, S.en
dc.contributor.authorWiescher, M.en
dc.contributor.authorWisshak, K.en
dc.contributor.authorn TOF Collaborationen
dc.date.accessioned2015-11-24T18:39:50Z
dc.date.available2015-11-24T18:39:50Z
dc.identifier.issn0954-3899-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/17501
dc.rightsDefault Licence-
dc.subjectneutron cross-sectionsen
dc.subjectinelastic-scatteringen
dc.subjectnucleosynthesisen
dc.subjectos-187en
dc.subjectisotopesen
dc.subjectstarsen
dc.subjectageen
dc.titleNuclear physics for the Re/Os clocken
heal.abstractDating the age of the universe by the beta-decay of (187)Re (t(1/2) = 41.2 Gyr) requires the accurate assessment of the s-process reaction flow. The daughter nucleus (187)Os as well as its immediate s-only neighbor (186)Os are shielded from the r-process. Therefore, the radiogenic contribution to (187)Os can be derived via the local approximation of the s-process, which is well justified in this mass region: (<sigma > N(s))(187) = (<sigma > N(s))(186). Accordingly, accurate Maxwellian-averaged (n,gamma) cross sections have to be known for (186)Os and (187)Os over the full range of s-process temperatures. Because (187)Os has low-lying excited states, which are significantly populated during the s-process, neutron captures on these excited states have to be properly taken into account. The input for the corresponding Hauser-Feshbach calculations can be constrained by deriving the strength functions from a detailed resonance analysis of the measured (n,gamma) cross sections as well as by an additional measurement of the inelastic scattering cross section for the first exited level, which dominates the competition between the capture and scattering channels. This contribution reports on measurements of the neutron capture cross sections of (186)Os, (187)Os and (188)Os from the eV region to 1MeV at the CERN/n_TOF facility and of the inelastic scattering cross section of (187)Os around 30 keV at the Karlsruhe 3.7 MV Van de Graaff accelerator. Based on these results and on a detailed resonance analysis, improved Maxwellian-averaged cross sections were obtained for thermal energies between 5 keV and 100 keV. The implications of these results for the Re/Os clock are discussed.en
heal.accesscampus-
heal.fullTextAvailabilityTRUE-
heal.identifier.primaryDoi 10.1088/0954-3899/35/1/014015-
heal.identifier.secondary<Go to ISI>://000252019800016-
heal.identifier.secondaryhttp://iopscience.iop.org/0954-3899/35/1/014015/pdf/0954-3899_35_1_014015.pdf-
heal.journalNameJournal of Physics G-Nuclear and Particle Physicsen
heal.journalTypepeer reviewed-
heal.languageen-
heal.publicationDate2008-
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιώνel
heal.typejournalArticle-
heal.type.elΆρθρο Περιοδικούel
heal.type.enJournal articleen

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