Exploració per tema "Astrofísica nuclear"

Ara es mostren els items 1-20 de 26

    • Application of the THM to the investigation of reactions induced by unstable nuclei: the 18F(p,a)15O case 

      LaCognata, M; Pizzone, R; José Pont, Jordi (2019-12-04)
      Article
      Accés obert
      The Trojan Horse Method is applied to the investigation of the18F(p,a)15O reaction, by extractingthe quasi free contribution to the2H(18F,a15O)nprocess. For the first time the method is applied to a reaction ofastrophysical ...

    • Beta decay studies of neutron rich nuclei using total absorption gamma-ray spectroscopy and delayed neutron measurements 

      Jokinen, Ari; Taín Enríquez, José Luis; Algora, A.; Estevez, E.; Rubio, B.; Valencia, E; Jordan, D.; Äystö, J.; Eronen, T.; Gómez Hornillos, María Belén; Cortés Rossell, Guillem Pere; Caballero Folch, Roger; Gelletly, W.; Bunce, M.; Batist, L.; Moore, I.; Porta, A.; Van Vinh, B.; Fallot, M.; Giot, L.; Martínez, T.; Domingo-Pardo, C.; Garcia, A. (2011-08-11)
      Article
      Accés restringit per política de l'editorial

    • High-resolution cross section measurements for neutron interactions on 89 Y with incident neutron energies up to 95 keV 

      Tagliente, Giuseppe; Milazzo, Paolo Maria; Paradela, Carlos; Kopecky, S.; Vescovi, Diego; Alaerts, G.; Damone, Lucia Anna; Heyse, Jan; Krticka, Milan; Schillebeeckx, P.; Caballero Ontanaya, Luis; Calviño Tavares, Francisco; Casanovas Hoste, Adrià; Cortés Rossell, Guillem Pere; Tarifeño Saldivia, Ariel Esteban (Springer, 2024-01-31)
      Article
      Accés restringit per política de l'editorial
      The cross section of the 89Y(n, ¿) reaction has important implications in nuclear astrophysics and for advanced nuclear technology. Given its neutron magic number N = 50 and a consequent small neutron capture cross section, ...

    • Introduction 

      José Pont, Jordi (2013-03)
      Capítol de llibre
      Accés restringit per política de l'editorial

    • Level structure of the Tz=-1 nucleus Ar 34 and its relevance for nucleosynthesis in ONe novae 

      José Pont, Jordi (American Physical Society, 2021-03-08)
      Article
      Accés obert
      The 24Mg+12C fusion reaction was used to perform a detailed ¿-ray spectroscopy study of the astrophysically important nucleus 34Ar. In particular, an experimental setup, coupling the advanced ¿-ray tracking array GRETINA ...

    • Low-energy( 23)Al beta-delayed proton decay and Na-22 destruction in novae 

      Perez Loureiro, David; Wrede, Christopher; José Pont, Jordi (American Physical Society (APS), 2020-05-19)
      Article
      Accés obert
      Realitzat a/amb:   Michigan State University / Universiṭah ha-ʻIvrit bi-Yerushalayim / University of Tennessee
      The radionuclide22Na is a target of¿-ray astronomy searches, predicted to be produced during thermonuclearrunaways driving classical novae. The22Na(p,¿)23Mg reaction is the main destruction channel of22Na during anova, ...

    • Measurement of the 197-Au(n,gamma ) cross section at n_TOF, - a step forward towards a new standard for capture cross section measurements 

      Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (2008)
      Text en actes de congrés
      Accés obert
      The accurate knowledge of the 197Au(n,g ) reaction cross section is of great importance, since this reaction if often used as a reference in capture cross section measurements relevant to Nuclear Astrophysics, as well ...

    • Measurement of the 77Se(n,¿) cross section up to 200 keV at the n_TOF facility at CERN 

      Sosnin, Nikolay Viktorovich; Lederer Woods, Claudia; Krticka, Milan; Garg, R.; Dietzel, Martin; Bacak, Michael; Barbagallo, Massimo; Battino, Umberto; Cristallo, Sergio; Damone, Lucia Anna; Diakaki, Maria; Calviño Tavares, Francisco; Casanovas Hoste, Adrià; Cortés Rossell, Guillem Pere; Tarifeño Saldivia, Ariel Esteban (American Physical Society, 2023-06-12)
      Article
      Accés obert
      The 77Se(n,¿) reaction is of importance for 77Se abundance during the slow neutron capture process in massive stars. We have performed a new measurement of the 77Se radiative neutron capture cross section at the Neutron ...

    • 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)
      Text en actes de congrés
      Accés obert
      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 N 14 (n,p) C 14 cross section at the CERN n_TOF facility from subthermal energy to 800 keV 

      Torres Sanchez, Pablo; Praena Rodríguez, Javier; Porras Sánchez, Ignacio; Sabaté-Gilarte, Marta; Lederer Woods, Claudia; Aberle, Oliver; Alcayne Aicua, Víctor; Amaducci, Simone; Andrzejewski, Józef; Audouin, Laurent; Calviño Tavares, Francisco; Casanovas Hoste, Adrià; Cortés Rossell, Guillem Pere; Tarifeño Saldivia, Ariel Esteban (American Physical Society, 2023-06-29)
      Article
      Accés obert
      Background: The 14N(n,p)14C reaction is of interest in neutron capture therapy, where nitrogen-related dose is the main component due to low-energy neutrons, and in astrophysics, where 14N acts as a neutron poison in the ...

    • 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)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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 ...

    • 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)
      Text en actes de congrés
      Accés obert
      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 ...

    • 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.; Taín Enríquez, José Luis; 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
      Accés restringit per política de l'editorial
      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 n_TOF 

      Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (2006)
      Text en actes de congrés
      Accés obert
      The neutron time of flight (n_TOF) facility at CERN is a neutron spallation source with a flight path of 187.5m. Intense proton bunches fromthe CERN PS with an energy of 20 GeV, an intensity of 7×1012 protons per pulse, ...

    • Neutron Capture cross section of 90Zr: Bottleneck in the s-process reaction flow 

      Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (2008-03-11)
      Article
      Accés obert
      The neutron capture cross sections of the Zr isotopes have important implications in nuclear astrophysics and for reactor design. The small cross section of the neutron magic nucleus 90Zr, which accounts for more than ...

    • Neutron cross section measurements at n-TOF for ADS related studies 

      Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (IOP Publishing. Institute of Physics, 2005)
      Text en actes de congrés
      Accés obert
      A neutron Time-of-Flight facility (n_TOF) is available at CERN since 2001. The innovative features of the neutron beam, in particular the high instantaneous flux, the wide energy range, the high resolution and the low ...

    • Neutron cross-section measurements at the n_TOF facility at CERN 

      Cortés Rossell, Guillem Pere; Calviño Tavares, Francisco; Pretel Sánchez, Carme; Poch Parés, Agustí (2004-01)
      Article
      Accés restringit per política de l'editorial
      A neutron Time-of-Flight facility (n_TOF)has recently become operative at CERN. The innovative features of the neutron beam, in particular the high instantaneous flux, the wide energy range, the high resolution and the ...

    • Neutron measurements for advanced nuclear systems: The n_TOF project at CERN 

      Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén (2011-04-21)
      Article
      Accés restringit per política de l'editorial
      A few years ago, the neutron time-of-flight facility n_TOF was built at CERN to address some of the urgent needs of high-accuracy nuclear data for Accelerator Driven Systems and other advanced nuclear energy systems, as ...

    • New constraints on the Al 25 (p,¿) reaction and its influence on the flux of cosmic ¿ rays from classical nova explosions 

      José Pont, Jordi (American Physical Society, 2021-08-16)
      Carta nàutica
      Accés obert
      The astrophysical 25Al(p,¿)26Si reaction represents one of the key remaining uncertainties in accurately modeling the abundance of radiogenic 26Al ejected from classical novae. Specifically, the strengths of key proton-unbound ...

    • Nucleosynthesis in stellar explosions: Type Ia supernovae, classical novae, and type I X-ray bursts 

      José Pont, Jordi (2019-02-20)
      Article
      Accés obert
      Nuclear astrophysics aims at understanding the cosmic origin of the chemical elements and the energy generation in stars. It constitutes a truly multidisciplinary arena that combines tools, developments, and achievements ...