Ara es mostren els items 61-80 de 263

    • GEANT4 simulation of the neutron background of the C6D6 set-up for capture studies at n_TOF 

      Žugec, Petar; Colonna, Nicola; Bosnar, Damir; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén; Riego Pérez, Albert (2014-05-20)
      Article
      Accés restringit per política de l'editorial
      The neutron sensitivity of the C6D6 detector setup used at n_TOF facility for capture measurements has been studied by means of detailed GEANT4 simulations. A realistic software replica of the entire n_TOF experimental ...
    • High accuracy 234U(n,f) cross section in the resonance energy region 

      Leal-Cidoncha, E.; Durán, I.; Paradela, C.; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gomez Hornillos, B.; Riego Pérez, Albert (EDP Sciences, 2016)
      Comunicació de congrés
      Accés obert
      New results are presented of the 234U neutron-induced fission cross section, obtained with high accuracy in the resonance region by means of two methods using the 235U(n,f) as reference. The recent evaluation of the 235U(n,f) ...
    • High accuracy 235U(n,f) data in the resonance energy region 

      Paradela, C.; Durán, I.; Tassan Got, Laurence; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Pretel Sánchez, Carme (EDP Sciences, 2015)
      Comunicació de congrés
      Accés obert
      The 235U neutron-induced cross section is widely used as reference cross section for measuring other fission cross sections, but in the resonance region it is not considered as an IAEA standard because of the scarce ...
    • High accuracy U-235(n,f) data in the resonance energy region 

      Paradela, C.; Durán, I.; Tassan Got, Laurence; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Pretel Sánchez, Carme (EPJ Web of Conferences, 2015)
      Text en actes de congrés
      Accés obert
      The U-235 neutron-induced cross section is widely used as reference cross section for measuring other fission cross sections, but in the resonance region it is not considered as an IAEA standard because of the scarce ...
    • High accuracy, high resolution 235U(n,f) cross section from n_TOF (CERN) from 18 meV to 10 keV 

      Mastromarco, Mario; Amaducci, Simone; Colonna, Nicola; Finocchiaro, Paolo; Cosentino, Luigi; Barbagallo, Massimo; Aberle, O.; Andrzejewski, Józef; Audouin, Ludmila; Bacak, Michael; Balibrea-Correa, J.; Becvar, F.; Berthoumieux, Eric; Billowes, J.; Bosnar, Damir; Calviño Tavares, Francisco; Casanovas Hoste, Adrià; Cortés Rossell, Guillem Pere; Tarifeño Saldivia, Ariel Esteban (Springer Nature, 2022-08-01)
      Article
      Accés obert
      U(n,f) cross section was measured in a wide energy range (18 meV–170 keV) at the n_TOF facility at CERN, relative to 6Li(n,t) and 10B(n,a) standard reactions, with high resolution and accuracy, with a setup based on a stack ...
    • High precision measurement of the radiative capture cross section of 238U at the n TOF CERN facility 

      Mingrone, Federica; Altstadt, Sebastian; Andrzejewski, Józef; 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 importance of improving the accuracy on the capture cross-section of 238U has been addressed by the Nuclear Energy Agency, since its uncertainty significantly affects the uncertainties of key design parameters for both ...
    • High-accuracy 233U(n, f ) cross-section measurement at the white-neutron source n TOF from near-thermal to 1 MeV neutron energy 

      Sarchiapone, L.; Savvidis, I.; Konovalov, V.; Stephan, C.; Tagliente, G.; Krticka, M.; Rudolf, G.; Kossionides, E.; Rullhusen, P.; Leeb, H.; Salgado, J.; Capote, R.; Cano-Ott, D.; Mengoni, A.; Calviño Tavares, Francisco; Milazzo, P.M.; Berthoumieux, E.; Massimi, C.; Berthier, B.; Mastinu, P.; Belloni, F.; Lampoudis, C.; Marrone, S.; Becvár, F.; Martínez, T.; Baumann, P.; Badurek, G.; Audouin, L.; Carrapiço, C.; Marganiec, J.; Lukic, S.; Lozano, M.; Santos, C.; Lopes, I.; Lindote, A.; Taín Enríquez, José Luis; Tassan-Got, L.; Assimakopoulos, P.A.; Kadi, Y.; Calviani, M.; Karadimos, D.; Praena, J.; Karamanis, D.; Abbondanno, U.; Ketlerov, V.; Aerts, G.; Kerveno, M.; Álvarez, H.; Koehler, P.; Álvarez-Velarde, F.; Andriamonje, S.; Andrzejewski, J.; Vlachoudis, V.; Vlastou, R.; Villamarin, D.; Vincente, M.C.; Käppeler, F.; Vaz, P.; Jericha, E.; Ventura, A.; Igashira, M.; Terlizzi, R.; Herrera-Martinez, A.; Vannini, G.; Voss, F.; Guerrero, C.; Tavora, L.; Gunsing, F.; Goverdovski, A.; Gramegna, F.; Heil, M.; Haas, B.; Haight, R.; Furman, W.; Gonzalez-Romero, E.; Goncalves, I.; Ferrant, L.; Ferrari, A.; Ferreira-Marques, R.; Fujiii, K.; Dridi, W.; Duran, I.; Eleftheriadis, C.; Embid-Segura, M.; Domingo-Pardo, C.; Dillmann, I.; David, S.; Cox, J.; Dahlfors, M.; Cortés Rossell, Guillem Pere; Couture, A.; Chiaveri, E.; Colonna, N.; Cennini, P.; Chepel, V.; Rubbia, C.; Rosetti, M.; Plukis, A.; Poch Parés, Agustí; Plag, R.; Plompen, A.; Rauscher, T.; Reifarth, R.; Pretel Sánchez, Carme; Quesada, J.; Pigni, M.T.; Perrot, L.; Pavlopoulos, P.; Papadopoulos, C.; Paradela, C.; Wisshak, K.; Patronis, N.; Pavlik, A.; O'Brien, S.; Pancin, J.; Papachristodoulou, C.; Mosconi, M.; Moreau, C.; Oberhummer, H.; Walter, S.; Neves, F.; Wiescher, M. (2009-10-08)
      Article
      Accés restringit per política de l'editorial
      The 233U(n,f ) cross section has been measured at the white neutron source n TOF in a wide energy range with a dedicated fission ionization chamber. We report here the results from ∼30 meV to 1 MeV neutron energy. ...
    • High-accuracy determination of the 238U/ 235U fission cross section ratio up to ˜ 1 GeV at n_TOF at CERN 

      Paradela, C.; Calviani, Marco; Tarrío, D.; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén; Pretel Sánchez, Carme; Riego Pérez, Albert (2015-02-09)
      Article
      Accés obert
      The U238 to U235 fission cross section ratio has been determined at n_TOF up to ˜1 GeV, with two different detection systems, in different geometrical configurations. A total of four datasets has been collected and compared. ...
    • High-accuracy determination of the neutron flux at n TOF 

      Barbagallo, M.; Guerrero, C.; Tsinganis, A.; Tarrío, D.; Altstadt, S.; Andriamonje, S.; Andrzejewski, J.; Audouin, L.; Bécares, V.; Becvar, F.; Belloni, Fabio; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén; Hernández-Prieto, A.; Riego Pérez, Albert (2013-12-18)
      Article
      Accés restringit per política de l'editorial
      The neutron flux of the n TOF facility at CERN was measured, after installation of the new spallation target, with four different systems based on three neutron-converting reactions, which represent accepted cross sections ...
    • High-accuracy determination of the neutron flux in the new experimental area n_TOF-EAR2 at CERN 

      Sabaté-Gilarte, M.; Barbagallo, Massimo; Colonna, Nicola; Calviño Tavares, Francisco; Casanovas Hoste, Adrià; Cortés Rossell, Guillem Pere; Tarifeño Saldivia, Ariel Esteban (2017-10-27)
      Article
      Accés obert
      A new high flux experimental area has recently become operational at the n_TOF facility at CERN. This new measuring station, n_TOF-EAR2, is placed at the end of a vertical beam line at a distance of approximately 20m from ...
    • High-energy neutron-induced fission cross sections of natural lead and bismuth-209 

      Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (2011-08-12)
      Article
      Accés restringit per política de l'editorial
      The CERN Neutron Time-Of-Flight (n TOF) facility is well suited to measure small neutron- induced ssion cross sections, as those of subactinides. The cross section ratios of natPb and 209Bi relative to 235U and 238U ...
    • High-precision measurement of the 238U(n,¿) cross section with the Total Absorption Calorimeter (TAC) at n TOF, CERN 

      Massimi, Cristian; Mingrone, Federica; Gunsing, Frank; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Riego Pérez, Albert (2014-05-01)
      Article
      Accés restringit per política de l'editorial
      The neutron capture cross section of U-238 is fundamental to the design and operation of current reactors and future fast nuclear reactors, and thus must be measured to a high level of accuracy. An experiment has been ...
    • High-resolution study of 237 Np fission cross section from 5 eV to 1 MeV 

      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
      A series of measurements of 237Np fission cross section have been performed at the CERN spallation neutron facility n_TOF which covers a wide energy range from 1 eV up to 250 MeV. A fast ionization chamber (FIC) was used ...
    • Improved lead and bismuth (n,gamma) cross sections and their astrophysical impact 

      Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (EDP Sciences, 2007)
      Text en actes de congrés
      Accés obert
      A series of (n,γ) neutron capture measurements on the lead isotopes and bismuth have been carried out at the CERN n TOF installation in the neutron energy range from 1 eV up to 1MeV. At n TOF, contaminations due to ...
    • Improved neutron capture cross section measurements with the n_TOF total absorption Cclorimeter 

      Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén (2011-08-12)
      Article
      Accés restringit per política de l'editorial
      The n TOF collaboration operates a Total Absorption Calorimeter (TAC) [1] for measuring neu- tron capture cross-sections of low-mass and/or radioactive samples. The results obtained with the TAC have led to a substantial ...
    • Integral cross section measurement of the12C(n,p)12B reaction 

      Žugec, Petar; Colonna, Nicola; Bosnar, Damir; Ventura, A.; Altstadt, Sebastian; Andrzejewski, Józef; Audouin, Ludmila; Barbagallo, Massimo; Bécares, Vicente; Berthoumieux, Eric; Brugger, Matthias; Calviani, Marco; Calviño Tavares, Francisco; Cano Ott, Daniel; Riego Pérez, Albert (2015)
      Text en actes de congrés
      Accés obert
      The integral cross section of the12C(n, p)12B reaction was measured at the neutron time of flight facility nTOF at CERN, from the reaction threshold at 13.6 MeV up to 10 GeV, by means of the combined activation and a ...
    • Integral measurement of the 12C(n, p)12B reaction up to 10 GeV 

      Žugec, Petar; Colonna, Nicola; Bosnar, Damir; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén (2016-04-22)
      Article
      Accés obert
      The integral measurement of the 12C(n, p)12B reaction was performed at the neutron time-offlight facility n TOF at CERN. The total number of 12B nuclei produced per neutron pulse of the n TOF beam was determined using ...
    • Investigation of neutron-induced reactions at n TOF: an overview of the 2009-2012 experimental program 

      Altstadt, Sebastian; Andrzejewski, Józef; Audouin, Ludmila; Barbagallo, Massimo; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén; Riego Pérez, Albert (2014-05)
      Article
      Accés restringit per política de l'editorial
      The neutron time-of-flight facility n TOF is operating at CERN (Switzerland) since 2001, having started in 2009 a new campaign with an upgraded spallation target. The ambitious program carried out includes a large number ...
    • Investigation of the 240Pu (n, f) reaction at the n_TOF/EAR2 facility in the 9 meV–6 MeV range 

      Stamatopoulos, A.; Tsinganis, Andrea; Colonna, Nicola; Vlastou, Roza; Diakaki, Maria; Žugec, Petar; Gunsing, Frank; Sabaté-Gilarte, Marta; Barbagallo, Massimo; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere (American Physical Society (APS), 2020-07-21)
      Article
      Accés obert
      Background: Nuclear waste management is considered amongst the major challenges in the field of nuclear energy. A possible means of addressing this issue is waste transmutation in advanced nuclear systems, whose operation ...
    • Long-term evolution of the neutron rate at the Canfranc Underground Laboratory 

      Orrigo, S.; Taín Enríquez, José Luis; Mont i Geli, Nil; Tarifeño Saldivia, Ariel Esteban; Fraile, L. M.; Grieger, Marcel; Agramunt Ros, Jorge; Algora, A.; Bemmerer, D.; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; de Blas, Alfredo; Dillmann, Iris; Domínguez Bugarín, Araceli; Nacher González, Enrique; Tolosa Delgado, Alvaro (springer-Verlag, 2022-09-13)
      Article
      Accés obert
      We report results on the long-term variation of the neutron counting rate at the Canfranc Underground Laboratory, of importance for several low-background experiments installed there, including rare-event searches. The ...