Ir al contenido (pulsa Retorno)

Universitat Politècnica de Catalunya

    • Català
    • Castellano
    • English
    • LoginRegisterLog in (no UPC users)
  • mailContact Us
  • world English 
    • Català
    • Castellano
    • English
  • userLogin   
      LoginRegisterLog in (no UPC users)

UPCommons. Global access to UPC knowledge

57.066 UPC E-Prints
You are here:
View Item 
  •   DSpace Home
  • E-prints
  • Departaments
  • Departament de Física i Enginyeria Nuclear (fins octubre 2015)
  • Articles de revista
  • View Item
  •   DSpace Home
  • E-prints
  • Departaments
  • Departament de Física i Enginyeria Nuclear (fins octubre 2015)
  • Articles de revista
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Nuclear physics for the Re/Os clock

Thumbnail
View/Open
nuclear.pdf (177,1Kb) (Restricted access)   Request copy 

Què és aquest botó?

Aquest botó permet demanar una còpia d'un document restringit a l'autor. Es mostra quan:

  • Disposem del correu electrònic de l'autor
  • El document té una mida inferior a 20 Mb
  • Es tracta d'un document d'accés restringit per decisió de l'autor o d'un document d'accés restringit per política de l'editorial
Share:
 
 
10.1088/0954-3899/35/1/014015
 
  View Usage Statistics
Cita com:
hdl:2117/11141

Show full item record
Ventura, A.
Villamarin, D.
Lamboudis, C.
Vincente, M.C.
Vlachoudis, V.
Lindote, A.
Tassan-Got, L.
Leeb, H.
Tavora, L.
Lozano, M.
Vannini, G.
Carrapico, C.
Cennini, P.
Cano-Ott, D.
Capote, R.
Becvar, F.
Calviani, M.
Taín Enríquez, José LuisMés informació
Tagliente, G.
Rullhusen, P.
Salgado, J.
Stephan, C.
Rubbia, C.
Rudolf, G.
Savvidis, I.
Santos, C.
Sarchiapone, L.
Reifarth, R.
Rauscher, T.
Quesada, J.
Plompen, A.
Poch Parés, AgustíMés informació
Plukis, A.
Pretel Sánchez, CarmeMés informacióMés informacióMés informació
Paradela, C.
Pavlopoulos, P.
Perrot, L.
Pigni, M.T.
Papadopoulos, C.
Pavlik, A.
Patronis, N.
Baumann, P.
Badurek, G.
Pancin, J.
Audouin, L.
Papachristodoulou, C.
Assimakopoulos, P.
Andriamonje, S.
Oberhummer, H.
Andrzejewski, J.
O'Brien, S.
Milazzo, P.M.
Álvarez-Velarde, H.
Neves, F.
Álvarez, H.
Abbondanno, U.
Gallino, R.
Calviño Tavares, FranciscoMés informacióMés informacióMés informació
Mastinu, P.
Massimi, C.
Lopes, I.
Marrone, S.
Marganiec, J.
Lukic, S.
Vaz, P.
Vlastou, R.
Voss, F.
Terlizzi, R.
Karadimos, D.
Mosconi, M.
Karamanis, D.
Heil, M.
Kerveno, M.
Kappeler, F
Koehler, P.
Plag, R.
Kossionides, E.
Mengoni, A.
Krticka, M.
Fujii, K.
Domingo-Pardo, C.
Aerts, G.
Kadi, Y.
The n_TOF Collaboration
Jericha, E.
Igashira, M.
Wiescher, M.
Herrera-Martinez, A.
Wisshak, K.
Gramegna, F.
Walter, S.
Guerrero, C.
Goncalves, I.
Gonzalez-Romero, E.
Haight, R.
Gunsing, F.
Haas, B.
Ferrari, A.
Furman, W.
Ferreira-Marques, R.
Duran, I.
Eleftheriadis, C.
Embid-Segura, M.
Ferrant, L.
Dahlfors, M.
David, S.
Dillmann, I.
Dridi, W.
Cox, J.
Couture, A.
Cortés Rossell, Guillem PereMés informacióMés informacióMés informació
Chepel, V.
Colonna, N.
Document typeArticle
Defense date2008-01
Rights accessRestricted access - publisher's policy
Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
Abstract
Dating the age of the universe by the β-decay of 187Re (t1/2 = 41.2 Gyr) requires the accurate assessment of the s-process reaction flow. The daughter nucleus 187Os as well as its immediate s-only neighbor 186Os are shielded from the r-process. Therefore, the radiogenic contribution to 187Os can be derived via the local approximation of the s-process, which is well justified in this mass region: ( σ Ns)187 = ( σ Ns)186. Accordingly, accurate Maxwellianaveraged (n, γ ) cross sections have to be known for 186Os and 187Os over the full range of s-process temperatures. Because 187Os 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, γ ) 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 186Os, 187Os and 188Os from the eV region to 1MeV at the CERN/n TOF facility and of the inelastic scattering cross section of 187Os 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.
CitationMosconi, M. [et al.]. Nuclear physics for the Re/Os clock. "Journal of physics G.Nuclear and particle physics", Gener 2008, vol. 35, núm. 014015, p. 01401501-01401507. 
URIhttp://hdl.handle.net/2117/11141
DOI10.1088/0954-3899/35/1/014015
ISSN0954-3899
Publisher versionhttp://iopscience.iop.org/0954-3899/35/1/014015/
Collections
  • Departament de Física i Enginyeria Nuclear (fins octubre 2015) - Articles de revista [603]
  • GREENER - Grup de recerca d'estudis energètics i de les radiacions - Articles de revista [178]
Share:
 
  View Usage Statistics

Show full item record

FilesDescriptionSizeFormatView
nuclear.pdfBlocked177,1KbPDFRestricted access

Browse

This CollectionBy Issue DateAuthorsOther contributionsTitlesSubjectsThis repositoryCommunities & CollectionsBy Issue DateAuthorsOther contributionsTitlesSubjects

© UPC Obrir en finestra nova . Servei de Biblioteques, Publicacions i Arxius

info.biblioteques@upc.edu

  • About This Repository
  • Contact Us
  • Send Feedback
  • Inici de la pàgina