Now showing items 21-40 of 73

  • Measurement of the 197-Au(n,gamma) cross section at n TOF: towards a new standard 

    Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (EDP Sciences, 2007)
    Conference report
    Open Access
    Two different detectors and techniques are employed at n TOF facility, at CERN, to improve the accuracy of the neutron capture cross section of 197Au(n,γ): a total absorption calorimeter and a set of C6D6. The accurate knowledge ...
  • Measurement of the 236U(n, f ) cross section from 170 meV to 2 MeV at the CERN n TOF facility 

    Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (2011-10-31)
    Article
    Restricted access - publisher's policy
    The neutron-induced fission cross section of 236U was measured at the neutron Time-of-Flight (n TOF) facility at CERN relative to the standard 235U(n,f ) cross section for neutron energies ranging from above thermal ...
  • Measurement of the 90,91,92,93,94,96-Zr(n,gamma) and 139-La(n,gamma) cross sections at n TOF 

    Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (EDP Sciences, 2007)
    Conference report
    Open Access
    Neutron capture cross sections of Zr and La isotopes have important implications in the field of nuclear astrophysics as well as in the nuclear technology. In particular the Zr isotopes play a key role for the determination ...
  • Measurement of the neutron capture cross section of 234-U in n TOF at CERN 

    Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (2006)
    Conference report
    Open Access
    Accurate and reliable neutron capture cross sections are needed in many research areas, including stellar nucleosynthesis, advanced nuclear fuel cycles, waste transmutation, and other applied programs. In particular, the ...
  • Measurement of the neutron capture cross section of 236-U 

    Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (2006)
    Conference report
    Open Access
    In this paper we describe the 236U(n,γ) reaction cross section measurement at the GELINA white pulsed neutron source of the Institute for Reference Materials and Measurements (IRMM) in Geel. The sample was placed in the ...
  • Measurement of the neutron-induced fission cross-section of 243Am relative to 235U from 0.5 to 20 MeV 

    Belloni, F.; Calviani, M.; Colonna, N.; Mastinu, P.; Milazzo, P.M.; Abbondanno, U.; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (2011-12)
    Article
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    The ratio of the neutron-induced fission cross-sections of 243Am and 235U was measured in the energy range from 0.5 to 20 MeV with uncertainties of ≈4%. The experiment was performed at the CERN n TOF facility using a ...
  • Measurement of the radiative neutron capture cross section of 206Pb and its astrophysical implications 

    Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (2007-10)
    Article
    Restricted access - publisher's policy
    The (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 ...
  • Measurement of the resonance capture cross section of 204,206-Pb and termination of the s-process 

    Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (American Institute of Physics (AIP), 2005)
    Conference report
    Restricted access - publisher's policy
    The neutron capture cross sections of 204;206Pb have been measured with high resolution at the n_TOF facility of CERN (Geneva) [5]. The neutron capture cross section of 204Pb is of particular relevance in astrophysics, since ...
  • 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 

    Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (2006-03)
    Article
    Restricted access - publisher's policy
    The 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 ...
  • Measurements of 90,91,92,93,94,96-Zr neutron capture cross sections at the n_TOF facility at CERN 

    Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (2008)
    Conference report
    Open Access
    Neutron capture cross sections for zirconium isotopes have important implications in the field of nuclear astrophysics. In particular they play a key role in ascertaining the neutron density in the He burning zone of the ...
  • Measurements of fission cross sections of actinides 

    Abbondanno, U.; Aerts, G.; Álvarez, H.; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (2003-04-01)
    External research report
    Open Access
    A measurement of the neutron induced fission cross sections of 237Np, 241,243Am and of 245Cm is proposed for the n_TOF neutron beam. Two sets of fission detectors will be used: one based on PPAC counters and another based ...
  • Measurements of the 90,91,92,93,94,96zr (n, gamma) cross-sections at n_tof 

    Milazzo, P.M.; Tagliente, G.; Abbondanno, U.; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (2008)
    Conference report
    Open Access
    Neutron capture cross sections for zirconium isotopes have important implications in the field of nuclear astrophysics as well as in the nuclear technology. In particular they play a key role for the determination of the ...
  • Measurements of the 90,91,92,94,96Zr neutron capture cross-section at n_TOF 

    Cortés Rossell, Guillem Pere; Calviño Tavares, Francisco; Poch Parés, Agustí; Pretel Sánchez, Carme (2006-06)
    Article
    Open Access
    The neutron capture cross sections of 90,91,92,94,96Zr, which play a key role for the determination of the neutron density in the He burning zone of the Red Giant stars, were measured over the energy range from 1 eV to ...
  • Measurements of the 90,91,92,94,96-Zr(n, gamma) cross-sections at n TOF 

    Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (Elsevier Science Publishers B.V. NORTH HOLLAND, 2004)
    Article
    Open Access
    Neutron capture cross sections of the 90,91,92,94,96Zr have been measured over the energy range from 1 eV to 1 MeV at the spallation neutron facility n TOF at CERN in 2003. The innovative features of the neutron beam, in ...
  • Measurements of the 90,91,92,94,96Zr(n,g) cross-sections at n_TOF 

    Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (2005-07)
    Article
    Restricted access - publisher's policy
    Neutron capture cross sections of the 90,91,92,94,96Zr have been measured over the energy range from 1 eV to 1 MeV at the spallation neutron facility n TOF at CERN in 2003. The innovative features of the neutron beam, in ...
  • Monte Carlo simulations for the study of a moderated neutron detector 

    Gómez Hornillos, María Belén; Gorlychev, V.; Caballero Folch, Roger; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme; Calviño Tavares, Francisco (2011-08-12)
    Article
    Open Access
    This work presents the Monte Carlo simulations performed with the MCNPX and GEANT4 codes for the design of a BEta deLayEd Neutron detector, BELEN-20. This detector will be used for the study of beta delayed neutron emission ...
  • Neutron capture cross section measurements at n_TOF of 237Np, 240Pu, 243Am, for the transmutation of nuclear waste 

    Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (2006-03-13)
    Article
    Open Access
    Accurate and reliable neutron capture cross section data for actinides are necessary for the proper design, safety regulation and precise performance assessment of transmutation devices such as Fast Critical Reactors or ...
  • Neutron Capture Cross Section Measurements at n_TOF of 237Np, 240Pu and 243Am for the Transmutation of Nuclear Waste 

    Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (American Institute of Physics (AIP), 2005)
    Conference report
    Restricted access - publisher's policy
    Accurate and reliable neutron capture cross section data for actinides are necessary for the proper design, safety regulation and precise performance assessment of transmutation devices such as Fast Critical Reactors or ...
  • Neutron capture cross section measurements for nuclear astrophysics at CERN n TOF 

    Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (Elsevier Science Publishers B.V. NORTH HOLLAND, 2004)
    Article
    Restricted access - publisher's policy
    A series of neutron capture cross section measurements of interest to nuclear astrophysics have been recently performed at n TOF, the neutron spallation source operating at CERN. The low repetition frequency of the proton ...
  • Neutron capture cross section measurements for nuclear astrophysics at CERN n_TOF 

    Lopes, I.; Rudolf, G.; Lorusso, G.; Pretel Sánchez, Carme; Milazzo, P.M.; Benlliure, J.; Koehler, P.; Abbondanno, U.; Konovalov, V.; Aerts, G.; Krticka, M.; Álvarez-Velarde, F.; Lamboudis, C.; Alvarez-Pol, H.; Leeb, H.; Andriamonje, S.; Lindote, A.; Andrzejewski, J.; Baumann, P.; Becvar, F.; Ketlerov, V.; Kerveno, M.; Karadimos, D.; Kadi, Y.; Herrera-Martinez, A.; Herrera-Martinez, A.; Haight, Y.; Heil, M.; Kappeler, F.; Isaev, S.; Jericha, E.; Griesmaye, E.; Haas, B.; Gunsing, F.; Gallino, R.; Gonzalez-Romero, E.; Goverdovski, A.; Gramegna, F.; Ferreira-Marques, R.; Frais-Koelbl, H.; Furman, W.; Goncalves, I.; Ferrari, A.; Ferrant, L.; Embid-Segura, M.; Domingo-Pardo, C.; Duran, I.; David, S.; Dolfini, R.; Dababneh, S.; Dahlfors, N.; Couture, A.; Cox, J.; Poch Parés, Agustí; Wisshak, K.; Wiescher, M.; Vlachoudis, V.; Voss, F.; Plompen, A.; Wendler, H.; Ventura, A.; Villamarin, D.; Vincente, M.C.; Terlizzi, R.; Papaevangelou, T.; Vaz, P.; Vannini, G.; Cortés Rossell, Guillem Pere; Colonna, N.; Cennini, P.; Tassan-Got, L.; Chiaveri, E.; Tavora, L.; Chepel, V.; Tain, J.L.; Capote, R.; Rosetti, N.; Cano-Ott, D.; Reifarth, R.; Calviño Tavares, Francisco; Tagliente, G.; Badurek, G.; Berthoumieux, E.; Cortina, D.; Stephan, C.; Soares, J.C.; Rapp, W.; Salgado, J.; Rullhusen, P. (2005-07)
    Article
    Restricted access - publisher's policy
    A series of neutron capture cross section measurements of interest to nuclear astrophysics have been recently performed at n TOF, the neutron spallation source operating at CERN. The low repetition frequency of the proton ...