Browsing by Author "Colonna, Nicola"

Now showing items 1-20 of 34

    • 7Be(n,alpha) and 7Be(n,p) cross-section measurement for the cosmological lithium problem at the n TOF facility at CERN 

      Barbagallo, Massimo; Colonna, Nicola; Aberle, O.; Calviño Tavares, Francisco; Casanovas Hoste, Adrià; Cortés Rossell, Guillem Pere; Tarifeño Saldivia, Ariel Esteban (EDP Sciences, 2016)
      Conference lecture
      Open Access
      The Cosmological Lithium Problem refers to the large discrepancy between the abundance of primordial 7Li predicted by the standard theory of Big Bang Nucleosynthesis and the value inferred from the so-called “Spite plateau” ...

    • A Micromegas detector for neutron beam imaging at the n TOF facility at CERN 

      Belloni, Fabio; Andriamonje, S.; Berthoumieux, Eric; Calviani, Marco; Colonna, Nicola; Gunsing, Frank; Tsinganis, A.; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén; Riego Pérez, Albert (2014-05-01)
      Article
      Restricted access - publisher's policy
      Micromegas (Micro-MEsh Gaseous Structure) detectors are gas detectors consisting of a stack of one ionization and one proportional chamber. A micromesh separates the two communicating regions, where two different electric ...

    • Astrophysics at n-TOF facility 

      Tagliente, G.; Colonna, Nicola; Marrone, S.; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (2008)
      Conference report
      Open Access
      The neutron time of flight (n_TOF) facility at CERN is a neutron spallation source, its white neutron energy spectrum ranges from thermal to several GeV, covering the full energy range of interest for nuclear astrophysics, ...

    • Capture cross section of 236U: the n TOF results 

      Barbagallo, Massimo; Colonna, Nicola; Altstadt, Sebastian; Andrzejewski, Józef; Audouin, Ludmila; Bécares, Vicente; Becvar, Zdenek; Belloni, Fabio; Berthoumieux, Eric; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Hernández Prieto, Álvaro; Riego Pérez, Albert (2014-05-01)
      Article
      Restricted access - publisher's policy
      Neutron induced capture cross section on 236U has been measured with high accuracy and high resolution at n TOF, in order to improve data libraries needed for the development of advanced nuclear reactors. Preliminary results ...

    • Constraints on the dipole photon strength for the odd uranium isotopes 

      Berthoumieux, Eric; Dupont, Emmeric; Gunsing, Frank; Serot, Olivier; Aberle, O.; Alcayne Aicua, Víctor; Amaducci, Simone; Andrzejewski, Józef; Audouin, Ludmila; Bécares, Vicente; Babiano Suárez, Víctor; Bacak, Michael; Barbagallo, Massimo; Billowes, J.; Bosnar, Damir; Caballero Ontanaya, Luis; Calviño Tavares, Francisco; Calviani, Marco; Cano Ott, Daniel; Casanovas Hoste, Adrià; Chiaveri, E.; Colonna, Nicola; Cortés Rossell, Guillem Pere; Cortés Giraldo, Miguel Antonio; Cosentino, Luigi; Cristallo, Sergio; Damone, Lucia Anna; Tarifeño Saldivia, Ariel Esteban (American Physical Society, 2022-02-01)
      Article
      Open Access
      Nuclear level densities (NLDs) and photon strength functions (PSFs), also called ¿ -ray or radiation strength functions, represent average properties of the nucleus in the regime of excitation where individual levels and ...

    • Experimental neutron capture data of 58Ni from the CERN n_TOF facility 

      Zugec, P.; Barbagallo, M.; Colonna, Nicola; Bosnar, D.; Altstadt, S.; Andrzejewski, J.; Audouin, L.; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén; Riego Pérez, Albert (2014-01-09)
      Article
      Restricted access - publisher's policy
      The 58Ni(n,γ ) cross section has been measured at the neutron time of flight facility n_TOF at CERN, in the energy range from 27 meV up to 400 keV. In total, 51 resonances have been analyzed up to 122 keV. Maxwellian ...

    • Experimental neutron capture data of 58Ni from the CERN n_TOF facility 

      Žugec, Petar; Barbagallo, Massimo; Colonna, Nicola; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Riego Pérez, Albert (EDP Sciences, 2015)
      Conference lecture
      Open Access
      The neutron capture cross section of 58Ni was measured at the neutron time of flight facility n_TOF at CERN, from 27 meV to 400 keV neutron energy. Special care has been taken to identify all the possible sources of ...

    • First results of the140ce(N,¿)141ce cross-section measurement at n_tof 

      Amaducci, Simone; Colonna, Nicola; Cosentino, Luigi; Cristallo, Sergio; Finocchio, Elisabetta; Massimi, Cristian; Mastromarco, Mario; Aberle, O.; Alcayne Aicua, Víctor; Andrzejewski, Józef; Babiano Suárez, Víctor; Bacak, Michael; Barbagallo, Massimo; Berthoumieux, Eric; Calviño Tavares, Francisco; Casanovas Hoste, Adrià; Cortés Rossell, Guillem Pere (2021-06-01)
      Article
      Open Access
      An accurate measurement of the 140Ce(n,¿) energy-dependent cross-section was performed at the n_TOF facility at CERN. This cross-section is of great importance because it represents a bottleneck for the s-process nucleosynthesis ...

    • Fission program at n_TOF 

      Tassan Got, Laurence; Colonna, Nicola; Calviño Tavares, Francisco; Casanovas Hoste, Adrià; Tarifeño Saldivia, Ariel Esteban; Cortés Rossell, Guillem Pere (EPJ Web of Conferences, 2019)
      Conference report
      Open Access
      Since its start in 2001 the n_TOF collaboration developed a measurement program on fission, in view of advanced fuels in new generation reactors. A special effort was made on measurement of cross sections of actinides, ...

    • 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
      Restricted access - publisher's policy
      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, 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
      Open Access
      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-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
      Open Access
      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 ...

    • 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)
      Conference report
      Open Access
      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
      Open Access
      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 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
      Open Access
      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 ...

    • Measurement of the 240Pu(n,f) cross-section at the CERN n TOF facility: First results from experimental area II (EAR-2) 

      Stamatopoulos, A.; Tsinganis, A.; Colonna, Nicola; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere (EDP Sciences, 2016)
      Conference lecture
      Open Access
      The accurate knowledge of the neutron-induced fission cross-sections of actinides and other isotopes involved in the nuclear fuel cycle is essential for the design of advanced nuclear systems, such as Generation-IV nuclear ...

    • Measurement of the 242Pu(n,f) cross section at the CERN n TOF facility 

      Tsinganis, A.; Berthoumieux, Eric; Colonna, Nicola; Calviani, Marco; Andriamonje, S.; Gunsing, Frank; Altstadt, Sebastian; Andrzejewski, Józef; Audouin, Ludmila; Barbagallo, Massimo; Bécares, Vicente; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén; Riego Pérez, Albert (2014-05-01)
      Article
      Restricted access - publisher's policy
      The accurate knowledge of relevant nuclear data is crucial for the design of advanced nuclear systems. These data include neutron cross sections of various plutonium isotopes and other minor actinides. The 242Pu(n,f) cross ...

    • Measurement of the 70Ge(n,¿) cross section up to 300 keV at the CERN n_TOF facility 

      Lederer-Woods, C.; Andrzejewski, Józef; Battino, U.; Gunsing, Frank; Krticka, M.; Massimi, Cristian; Mingrone, Federica; Aberle, O.; Audouin, Ludmila; Bacak, M.; Barbagallo, Massimo; Beinrucker, C.; Berthoumieux, Eric; Bosnar, Damir; Brugger, Matthias; Calviño Tavares, Francisco; Chen, Yu-Hsiang; Colonna, Nicola; Cortés Rossell, Guillem Pere; Cosentino, Luigi; Diakaki, M.; Domingo Pardo, César; Dressler, Rugard; Dupont, E.; Gonzalez Romero, E.; Goverdovski, A.; Griesmayer, E.; Jericha, E.; Kaeppeler, F.; Kadi, Y; Ketlerov, V.; Kimura, Atsushi; Leal-Cidoncha, E.; Leeb, H.; Lerendegui-Marco, J.; Losito, R.; Marganiec, J.; Mastromarco, M.; Musumarra, A.; Patronis, N.; Pavlik, A.; Rauscher, Thomas; Rubbia, C.; Sabaté-Gilarte, M.; Saxena, Avadh; Schmidt, Samuel; Stamatopoulos, A.; Tassan-Got, L.; Vannini, Gianni; Vlachoudis, V.; Wallner, A.; Wright, T.; Žugec, Petar (American Physical Society (APS), 2019-10-17)
      Article
      Open Access
      Neutron capture data on intermediate mass nuclei are of key importance to nucleosynthesis in the weakcomponent of the slow neutron capture processes, which occurs in massive stars. The (n,¿) cross section on70Ge, which is ...

    • Measurement of the C-12(n, p)B-12 cross section at n_TOF at CERN by in-beam activation analysis 

      Žugec, Petar; Colonna, Nicola; Bosnar, Damir; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén; Riego Pérez, Albert (2014-08-19)
      Article
      Restricted access - publisher's policy
      The integral cross section of the C-12(n,p)B-12 reaction has been determined for the first time in the neutron energy range from threshold to several GeV at the n_TOF facility at CERN. The measurement relies on the activation ...

    • Measurement of the Ce 140 (n,y) cross section at n_TOF and its astrophysical implications for the chemical evolution of the universe 

      Amaducci, Simone; Colonna, Nicola; Cosentino, Luigi; Cristallo, Sergio; Finocchiaro, Paolo; Krticka, Milan; Massimi, Cristian; Mastromarco, Mario; Mazzone, Annamaria; Maugeri, Emilio Andrea; Mengoni, Alberto; Roederer, Ian U.; Straniero, Oscar; Calviño Tavares, Francisco; Casanovas Hoste, Adrià; Cortés Rossell, Guillem Pere (American Institute of Physics (AIP), 2024-03-21)
      Article
      Open Access
      140 Ce (n, y) is a key reaction for slow neutron-capture (s-process) nucleosynthesis due to being a bottleneck in the reaction flow. For this reason, it was measured with high accuracy (uncertainty˜5%) at the n_TOF facility, ...