Exploració per autor "Calviño Tavares, Francisco"Més informacióMés informació

Ara es mostren els items 236-255 de 266

    • The (n,alpha) reaction in the s-process branching point 59Ni 

      Weiß, C.; Griesmayer, E.; Andrzejewski, Józef; Badurek, G.; Dressler, Rugard; Koehler, Paul E.; Lederer, Claudia; Altstadt, Sebastian; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén; Riego Pérez, Albert (2014-06-01)
      Article
      Accés restringit per política de l'editorial
      The (n,alpha) reaction in the radioactive 59Ni is of relevance in nuclear astrophysics as 59Ni can be considered as the first branching point in the astrophysical s-process. Its relevance in nuclear technology is especially ...

    • The 139La(n, gamma) cross section: key for the onset of the s-process 

      Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (2007-03)
      Article
      Accés restringit per política de l'editorial
      The nuclear resonance parameters and the capture cross section of the neutron magic isotope 139La have been measured relative to 197Au in the energy range of 0.6 eV to 9 keV at the neutron time-of-flight (n TOF) facility ...

    • The 234U neutron capture cross section measurement at the n TOF facility 

      Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (EDP Sciences, 2007)
      Text en actes de congrés
      Accés obert
      The neutron capture cross-section of 234U has been measured for energies from thermal up to the keV region in the neutron time-of-flight facility n TOF, based on a spallation source located at CERN. A 4π BaF2 array composed ...

    • The 236U neutron capture cross-section measured at the n TOF CERN facility 

      Mastromarco, M.; Barbagallo, Massimo; Vermeulen, M.J.; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén; Riego Pérez, Albert (EDP Sciences, 2016)
      Text en actes de congrés
      Accés obert
      The 236U isotope plays an important role in nuclear systems, both for future and currently operating ones. The actual knowledge of the capture reaction of this isotope is satisfactory in the thermal region, but it is ...

    • The 237Np(n,f) cross section at the CERN n-TOF facility 

      Karadimos, D.; Vlastou, R.; Calviño Tavares, Francisco; Pretel Sánchez, Carme; Cortés Rossell, Guillem Pere (American Institute of Physics (AIP), 2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The 237Np(n,f) cross sections have been measured at the n-TOF facility relative to the 235U and 238U fission cross sections. The n-TOF spallation neutron source at CERN is characterized by a high intensity flux, an excellent ...

    • The 33S(n,alpha)30Si cross section measurement at n TOF-EAR2 (CERN): From 0.01 eV to the resonance region 

      Sabaté-Gilarte, M.; Praena, J.; Porras, I.; Calviño Tavares, Francisco; Casanovas Hoste, Adrià; Cortés Rossell, Guillem Pere; Tarifeño Saldivia, Ariel Esteban (EDP Sciences, 2016)
      Comunicació de congrés
      Accés obert
      The 33S(n,a)30Si cross section measurement, using 10B(n,a) as reference, at the n_TOF Experimental Area 2 (EAR2) facility at CERN is presented. Data from 0.01¿eV to 100¿keV are provided and, for the first time, the cross ...

    • The 93-Zr(n,gamma) reaction up to 8 keV neutron energy 

      Tagliente, G.; Milazzo, P.M.; Fujiii, K.; Abbondanno, U.; Aerts, G.; Calviño Tavares, Francisco; Pretel Sánchez, Carme; Cortés Rossell, Guillem Pere (2013-01-31)
      Article
      Accés restringit per política de l'editorial
      he (n,gamma) reaction of the radioactive isotope 93Zr has been measured at the n_TOF high-resolution time-of-flight facility at CERN. Resonance parameters have been extracted in the neutron energy range up to 8 keV,yielding ...

    • The BRIKEN Project: extensive measurements of ß-delayed neutron emitters for the astrophysical r process 

      Taín Enríquez, José Luis; Agramunt Ros, Jorge; Algora, A.; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Tarifeño Saldivia, Ariel Esteban (2018-03)
      Article
      Accés obert
      An ambitious program to measure decay properties, primarily ß-delayed neutron emission probabilities and half-lives, for a significant number of nuclei near or on the path of the rapid neutron capture process, has been ...

    • The CERN n TOF facility: neutron beams performances for cross section measurements 

      Altstadt, Sebastian; Andrzejewski, Józef; Audouin, Ludmila; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén; Hernández Prieto, Álvaro; Riego Pérez, Albert (2014-05-01)
      Article
      Accés restringit per política de l'editorial
      This paper presents the characteristics of the existing CERN n TOF neutron beam facility (n TOF-EAR1 with a flight path of 185 meters) and the future one (n TOF EAR-2 with a flight path of 19 meters), which will operate ...

    • The CERN n_TOF facility: a unique tool for nuclear data measurement 

      Mingrone, Federica; Aberle, O.; Andrzejewski, Józef; Audouin, Ludmila; Bécares, Vicente; Bacak, M.; Barbagallo, Massimo; Barros, S.; Becvar, F.; Beinrucker, C.; Berthoumieux, Eric; Billowes, J.; Calviño Tavares, Francisco; Casanovas Hoste, Adrià; Cortés Rossell, Guillem Pere (2015)
      Text en actes de congrés
      Accés obert
      The study of the resonant structures in neutron-nucleus cross-sections, and therefore of the compoundnucleus reaction mechanism, requires spectroscopic measurements to determine with high accuracy the energy of the neutron ...

    • The data acquisition system of the neutron time-of-flight facility n- TOF at CERN 

      Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Pretel Sánchez, Carme; Poch Parés, Agustí (2005-02)
      Article
      Accés restringit per política de l'editorial
      The n_TOF facility at CERN has been designed for the measurement of neutron capture, fission and (n; n) crosssections with high accuracy. This requires a flexible and—due to the high instantaneous neutron flux—almost dead ...

    • The Equivalency of Theoretical and Monte Carlo Approaches in Neutron Transport: the case of simplified slowing-down 

      Al Awad, Abdulrahman; Calviño Tavares, Francisco; Batet Miracle, Lluís (2022)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      For purposes of engineering education, computer experiments or simulations are powerful tools to demonstrate and emphasize physical concepts instead of relying on complex and ambiguous mathematics. The main advantage of ...

    • The measurement of the Pb-206(n,gamma) cross section and stellar implications 

      Vaz, P.; Ventura, A.; Lozano, M.; Villamarin, D.; Vincente, M.C.; Marganiec, J.; Tassan-Got, L.; Lukic, S.; Tavora, L.; Massimi, C.; Terlizzi, R.; Pavlik, A.; Patronis, N.; Perrot, L.; Pavlopoulos, P.; Cennini, P.; Carrapico, C.; Papadopoulos, C.; Capote, R.; Paradela, C.; Cano-Ott, Daniel; Calviño Tavares, Francisco; Pancin, J.; Calviani, M.; Papachristodoulou, C.; Oberhummer, H.; Bisterzo, S.; O'Brien, S.; Berthoumieux, E.; Becvar, F.; Baumann, P.; Chepel, V.; Neves, F.; Mosconi, M.; Marrone, S.; Milazzo, P.M.; Mengoni, A.; Mastinu, P.; Vannini, G.; Vlachoudis, V.; Vlastou, R.; Badurek, G.; Kossionides, E.; Domingo-Pardo, C.; Krticka, M.; Abbondanno, U.; Lamboudis, C.; Aerts, G.; Leeb, H.; Álvarez-Velarde, F.; Lindote, A.; Andriamonje, S.; Lopes, I.; Andrzejewski, J.; Assimakopoulos, P.; Audouin, L.; Koehler, P.; Wisshak, K.; Kerveno, M.; Karamanis, D.; Walter, S.; Karadimos, D.; Wiescher, M.; Herrera-Martinez, A.; Voss, F.; Igashira, M.; Haight, R.; Heil, M.; Kaeppeler, F.; Jericha, E.; Kadi, Y.; Guerrero, C.; Haas, B.; Gunsing, F.; Gallino, R.; Goncalves, I.; Gonzalez-Romero, E.; Gramegna, F.; Ferrari, A.; Ferreira-Marques, R.; Fujii, K; Furman, W.; Ferrant, L.; Embid-Segura, M.; Eleftheriadis, C.; Dridi, W.; Duran, I.; David, S.; Dillmann, I.; Couture, A.; Cox, J.; Colonna, N.; Cortés Rossell, Guillem Pere; Taín Enríquez, José Luis; Tagliente, G.; Rullhusen, P.; Salgado, J.; Rubbia, C.; Rudolf, G.; Savvidis, I.; Stephan, C.; Santos, C.; Sarchiapone, L.; Reifarth, R.; Rauscher, T.; Quesada, J.; Pretel Sánchez, Carme; Plompen, A.; Alvarez, A.; Plukis, A.; Pigni, M.T.; Plag, R.; Poch Parés, Agustí (2008-01)
      Article
      Accés restringit per política de l'editorial
      The neutron capture cross section of 206Pb has been measured at the CERN n TOF spectrometer using a setup of two C6D6 detectors. In the energy interval from 1 eV to 600 keV the cross section is dominated by resonances, ...

    • The measurement programme at the neutron time-of-flight facility n TOF at CERN 

      Gunsing, Frank; Aberle, O.; Andrzejewski, Józef; Calviño Tavares, Francisco; Casanovas Hoste, Adrià; Cortés Rossell, Guillem Pere; Tarifeño Saldivia, Ariel Esteban (EDP Sciences, 2016)
      Comunicació de congrés
      Accés obert
      Neutron-induced reaction cross sections are important for a wide variety of research fields ranging from the study of nuclear level densities, nucleosynthesis to applications of nuclear technology like design, and criticality ...

    • The n TOF facility: Neutron beams for challenging future measurements at CERN 

      Chiaveri, E.; Aberle, O.; Andrzejewski, Józef; Calviño Tavares, Francisco; Casanovas Hoste, Adrià; Cortés Rossell, Guillem Pere; Tarifeño Saldivia, Ariel Esteban (EDP Sciences, 2016)
      Comunicació de congrés
      Accés obert
      The CERN n TOF neutron beam facility is characterized by a very high instantaneous neutron flux, excellent TOF resolution at the 185m long flight path (EAR-1), low intrinsic background and coverage of a wide range of neutron ...

    • The n_TOF facility at CERN: performances and first physics results 

      Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (Robert C.Haight; Mark B. Chadwick; Toshihiko Kawano; Patrick Talou, 2004)
      Text en actes de congrés
      Accés obert
      The neutron Time of Flight (n_TOF) facility at CERN is a source of a wide-range (1 eV<En<250 MeV) flux of neutrons, generated by spallation of 20-GeV/c protons onto a solid lead target. The goal of the n_TOF is to ...

    • The neutron capture cross sections of 237Np(n,gamma) and 240Pu(n,gamma) and its relevance in the transmutation of nuclear waste 

      Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (EDP Sciences, 2007)
      Text en actes de congrés
      Accés obert
      Neutron capture cross sections of actinides are of great relevance for the Transmutation of Nuclear Waste in Accelerator Driven Systems (ADS) and Generation-IV reactors. The neutron capture cross sections of 237Np and 240Pu ...

    • The neutron time-of-flight facility n_TOF at CERN: Phase II 

      Gunsing, Frank; Andriamonje, S.; Andrzejewski, Józef; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere (American Institute of Physics (AIP), 2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Neutron-induced reactions are studied at the neutron time-of-flight facility n_TOF at CERN. The facility uses 6~ns wide pulses of 20 GeV/c protons impinging on a lead spallation target. The large neutron energy range and ...

    • The new vertical neutron beam line at the CERN n_TOF facility design and outlook on the performance 

      Weiß, C.; Berthoumieux, Eric; Calviani, Marco; Tsinganis, A.; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Riego Pérez, Albert; Tarifeño Saldivia, Ariel Esteban (2015-07-23)
      Article
      Accés obert
      At the neutron Lime-of-flight facility n_TOF at CERN a new vertical beam line was constructed in 2014, in order to extend the experimental possibilities at this facility to an even wider range of challenging cross-section ...

    • The Nuclear astrophysics program at n_TOF (CERN) 

      Colonna, Nicola; Aberle, O.; Andrzejewski, Józef; Calviño Tavares, Francisco; Casanovas Hoste, Adrià; Cortés Rossell, Guillem Pere; Tarifeño Saldivia, Ariel Esteban (EDP Sciences, 2018)
      Text en actes de congrés
      Accés obert
      An important experimental program on Nuclear Astrophysics is being carried out at the n_TOF since several years, in order to address the still open issues in stellar and primordial nucleosynthesis. Several neutron capture ...