Browsing by Author "Massimi, Cristian"

Now showing items 1-15 of 15

    • 238U(n, gamma) reaction cross section measurement with C6D6 detectors at the n_TOF CERN facility. 

      Mingrone, Federica; Massimi, Cristian; Vannini, Gianni; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Hernández Prieto, Álvaro; Riego Pérez, Albert (2013)
      Conference report
      Open Access
      The radiative capture cross section of 238U is very important for the developing of new reactor technologies and the safety of existing ones. Here the preliminary results of the 238U(n,¿) cross section measurement performed ...

    • Erratum: 62Ni(n,¿) and 63Ni(n,¿ ) cross sections measured at the n_TOF facility at CERN 

      Lederer, Claudia; Massimi, Cristian; Berthoumieux, Eric; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén; Riego Pérez, Albert (2015-07-23)
      Article
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    • 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 ...

    • 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
      Restricted access - publisher's policy
      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 ...

    • Measurement of the 24,25,26Mg(n, gamma) reaction cross-section at n-TOF 

      Massimi, Cristian; Andriamonje, S.; Andrzejewski, Józef; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén (PoS - Proceedings of Science, 2010)
      Conference report
      Open Access
      We have measured the neutron-induced capture cross-section of the importants-process isotopesof magnesium. The measurement has been performed at the neutron time-of-flight facility n_TOFat CERN. From a preliminary analysis ...

    • 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 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, ...

    • Neutron capture cross section measurement of 238U at the CERN n_TOF facility in the energy region from 1 eV to 700 keV 

      Mingrone, Federica; Massimi, Cristian; Vannini, Gianni; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere (AMER PHYSICAL SOC, 2017-03-10)
      Article
      Open Access
      The aim of this work is to provide a precise and accurate measurement of the 238U(n, gamma) reaction cross section in the energy region from 1 eV to 700 keV. This reaction is of fundamental importance for the design ...

    • Neutron capture reactions on Fe and Ni isotopes for the astrophysical s-process 

      Lederer, Claudia; Massimi, Cristian; Žugec, Petar; Barbagallo, Massimo; Colonna, Nicola; Domingo Pardo, César; Gunsing, Frank; Taín Enríquez, José Luis; Altstadt, Sebastian; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén; Riego Pérez, Albert (2014-06-01)
      Article
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      Neutron capture cross sections in the keV neutron energy region are the key nuclear physics input to study the astrophysical slow neutron capture process. In the past years, a series of neutron capture cross section ...

    • Neutron spectroscopy of 26Mg states: constraining the stellar neutron source 22Ne(alpha, n) 25Mg 

      Massimi, Cristian; Altstadt, Sebastian; Andrzejewski, Józef; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere (Elsevier, 2017-02-16)
      Article
      Open Access
      This work reports on accurate, high-resolution measurements of the 25Mg(n, gamma )26Mg and 25Mg(n, tot) cross sections in the neutron energy range from thermal to about 300 keV, leading to a significantly improved 25Mg(n, ...

    • New measurement of the 25Mg(n,gamma) reaction cross section 

      Massimi, Cristian; Koehler, Paul E.; Mingrone, Federica; Altstadt, Sebastian; Andrzejewski, Józef; Audouin, Ludmila; Barbagallo, Massimo; Bécares, Vicente; Becvar, F.; Belloni, Fabio; Berthoumieux, Eric; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Riego Pérez, Albert (2014-05-01)
      Article
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      The 25Mg(n,gamma) reaction cross-section has been measured at the neutron time-of-flight facility n TOF at CERN in 2003 and, with an improved experimental set up, in 2012. These measurements aim at addressing important ...

    • Ni-62(n,gamma) and Ni-63(n,gamma) cross sections measured at the n_TOF facility at CERN 

      Lederer, Claudia; Massimi, Cristian; Berthoumieux, Eric; Colonna, Nicola; Dressler, Rugard; Guerrero, Carlos; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén; Riego Pérez, Albert (2014-02-28)
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      The cross section of the Ni-62(n,gamma) reaction was measured with the time-of-flight technique at the neutron time-of-flight facility n_TOF at CERN. Capture kernels of 42 resonances were analyzed up to 200 keV neutron ...

    • Resonance neutron-capture cross sections of stable magnesium isotopes and their astrophysical implications 

      Massimi, Cristian; Koehler, Paul E.; Colonna, Nicola; Gunsing, Frank; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (2012-04-20)
      Article
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      We have measured the neutron capture cross sections of the stable magnesium isotopes 24,25,26Mg in the energy range of interest to the s process using the neutron time-of-flight facility n_TOF at CERN. Capture events ...

    • Status and outlook of the neutron time-of-flight facility n_TOF at CERN 

      Gunsing, Frank; Abbondanno, U; Aerts, G; Alvarez, H; Alvarez Velarde, Francisco; Andriamonje, S; Assimakopoulos, P; Audouin, Ludmila; Badurek, G.; Dolfini, R.; Ferrant, L.; Domingo Pardo, César; Dridi, W.; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Duran, I.; Ferrari, A.; Ferreira-Marques, R.; Frais-Koelbl, H.; Furman, W.; Fujii, K; Jericha, E.; Goncalves, I.; Gonzalez Romero, E.; Goverdovski, A.; Karamanis, D.; Gramegna, F.; Griesmayer, E.; Haas, B.; Haight, R.; Kerveno, M.; Herrera Martinez, Aura; Igashira, M.; Isaev, S.; Kappeler, F; Kadi, Y; Karadimos, D.; Ketlerov, V.; Koehler, Paul E.; Konovalov, V.; Kossionides, E.; Krticka, M.; Mengoni, A; Lampoudis, C.; Leeb, H.; Lindote, A.; Neves, F.; Lopes, I.; Marrone, S.; Lukic, S.; Marganiec, J.; Marques, L.; Oberhummer, H.; Martínez, T.; Mastinu, P.; Massimi, Cristian; Milazzo, P.M.; Moreau, C; Mosconi, M.; O'Brien, S.; Oshima, M.; Pancin, J.; Papachristodoulou, C.; Papadopoulos, C.; Rauscher, Thomas; Paradela, C.; Patronis, N.; Pavlik, A.; Rudolf, G.; Pavlopoulos, P.; Perrot, L.; Pigni, M.T.; Plag, R.; Plompen, A.; Plukis, A.; Rullhusen, P.; Pretel Sánchez, Carme; Poch Parés, Agustí; Quesada, J.; Reifarth, R.; Rubbia, C.; Rosetti, M.; Sarchiapone, L.; Salgado, J.; Savvidis, I.; Stephan, C.; Tagliente, G.; Walter, S.; Tassan-Got, L.; Tavora, L.; Becvar, F.; Terlizzi, R.; Vannini, Gianni; Vaz, P.; Ventura, Alberto; Villamarin, D.; Vincente, M.C.; Berthoumieux, Eric; Vlastou, R.; Vlachoudis, V.; Voss, F.; Wendler, H.; Wiescher, M.; Wisshak, K.; Cano-Ott, D; Capote Noy, Roberto; Albornoz, A.C. de; Cennini, P.; Eleftheriadis, C.; Chepel, V.; Chiaveri, E.; Colonna, Nicola; Couture, A.; Cox, J.; Dahlfors, M.; David, S.; Dillmann, Iris; Lozano, Manuel; Guerrero, Carlos; Taín Enríquez, José Luis (2007-08)
      Article
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      The neutron time-of-flight facility n_TOF at CERN, fully operational since 2002, combines a high instantaneous neutron flux with high energy resolution. The wide energy range and the high neutron flux per time-of-flight ...

    • The nucleosynthesis of heavy elements in Stars: The key isotope 25Mg 

      Massimi, Cristian; Koehler, Paul E.; Kopecky, Stefan; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere (2013)
      Conference report
      Open Access
      We have measured the radiative neutron-capture cross section and the total neutron-induced cross section of one of the most important isotopes for the s process, the 25Mg. The measurements have been carried out at the ...