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Ara es mostren els items 11-30 de 240

    • A new CVD diamond mosaic-detector for (n, a) cross-section measurements at the n_TOF experiment at CERN 

      Weiß, C.; Griesmayer, E.; Guerrero, C.; Altstadt, S.; Andrzejewski, J.; Audouin, L.; Badurek, G.; Barbagallo, M.; Bécares, V.; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén; Hernández-Prieto, A.; Riego Pérez, Albert (2013-08-02)
      Article
      Accés restringit per política de l'editorial
      At then_TOFexperimentatCERNadedicatedsingle-crystalchemicalvapordeposition(sCVD)Diamond Mosaic-Detectorhasbeendevelopedfor(n,α) cross-sectionmeasurements.Thedetector,characterized by anexcellenttimeandenergyresolution, ...

    • A segmented total energy detector (sTED) optimized for (n, ¿) cross-section measurements at n_TOF EAR2 

      Alcayne Aicua, Víctor; Cano Ott, Daniel; García Alvarado, Jose Maria; González Romero, Enrique Miguel; Martínez, T.; Pérez de Rada Fiol, Alberto; Casanovas Hoste, Adrià; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Tarifeño Saldivia, Ariel Esteban (Elsevier, 2024-04-01)
      Article
      Accés obert
      The neutron time-of-flight facility n_TOF at CERN is a spallation source dedicated to measurements of neutron- induced reaction cross-sections of interest in nuclear technologies, astrophysics, and other applications. Since ...

    • Advances and new ideas for neutron-capture astrophysics experiments at CERN n_TOF 

      Domingo Pardo, César; Babiano Suárez, Víctor; Balibrea Correa, Javier; Lerendegui Marco, Jorge; Taín Enríquez, José Luis; Tarifeño Saldivia, Ariel; Aberle, O.; Alcayne Aicua, Víctor; Amaducci, Simone; Andrzejewski, Józef; Calviño Tavares, Francisco; Calviani, Marco; Casanovas Hoste, Adrià; Cortés Rossell, Guillem Pere; Cosentino, Luigi; Dressler, Rugard (Springer Nature, 2023-01-01)
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      Accés obert
      This article presents a few selected developments and future ideas related to the measurement of (n,¿) data of astrophysical interest at CERN n_TOF. The MC-aided analysis methodology for the use of low-efficiency radiation ...

    • Angular distribution in the neutron-induced fission of actinides 

      Leong, L.S.; Tassan Got, Laurence; Tarrío, D.; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén (EPJ Web of Conferences, 2013)
      Text en actes de congrés
      Accés obert
      Above 1MeV of incident neutron energy the fission fragment angular distribution (FFAD) has generally a strong anisotropic behavior due to the combination of the incident orbital momentum and the intrinsic spin of the ...

    • Application of Photon Strength Functions to (n,gamma) measurements with the n_TOF TAC 

      Guerrero, Carlos; Abbondanno, U.; Aerts, G.; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Pretel Sánchez, Carme; Poch, Agustí (PoS - Proceedings of Science, 2018)
      Text en actes de congrés
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      The neutron capture cross section measurements at the CERN n_TOF facility are performed using a new detection system, the segmented Total Absorption Calorimeter (TAC). All measurements are performed in reference to the ...

    • Approaching the precursor nuclei of the third r-process peak with RIBs 

      Domingo-Pardo, C; Agramunt Ros, Jorge; Algora, A.; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere (Institute of Physics (IOP), 2013)
      Comunicació de congrés
      Accés obert
      The rapid neutron nucleosynthesis process involves an enormous amount of very exotic neutron-rich nuclei, which represent a theoretical and experimental challenge. Two of the main decay properties that affect the final ...

    • Astrophysical Implications of the139La(n,gamma) and151Sm(n,gamma) Cross Section Measured at n_TOF 

      Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (2006)
      Text en actes de congrés
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      The nuclear resonance parameters and the capture cross section of the neutron magic isotope 139La and of the radioactive isotope 151Sm have been measured relative to 197Au in the energy range of 0.6 eV-1 MeV at neutron ...

    • 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)
      Text en actes de congrés
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      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, ...

    • Be-7(n,alpha)He-4 reaction and the cosmological lithium problem: measurement of the cross section in a wide energy range at n_TOF at CERN 

      Barbagallo, Massimo; Musumarra, A.; Cosentino, L.; Calviño Tavares, Francisco; Casanovas Hoste, Adrià; Cortés Rossell, Guillem Pere; Tarifeño Saldivia, Ariel Esteban (2016-10-03)
      Article
      Accés obert
      The energy-dependent cross section of the Be7(n,alpha)He4 reaction, of interest for the so-called cosmological lithium problem in big bang nucleosynthesis, has been measured for the first time from 10 meV to 10 keV neutron ...

    • 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)
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      Accés restringit per política de l'editorial

    • Beta-decay half-lives and beta-delayed neutron emission probabilities for several isotopes of Au, Hg, Tl, Pb, and Bi, beyond N = 126 

      Caballero-Folch, R.; Domingo-Pardo, C; Agramunt Ros, Jorge; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere (2017-06-23)
      Article
      Accés obert
      Background: There have been measurements on roughly 230 nuclei that are beta-delayed neutron emitters. They range from 8He up to 150La. Apart from 210Tl, with a branching ratio of only 0.007%, no other neutron emitter has ...

    • Capture cross section measurements of 186,187,188-Os at n TOF: the resolved resonance region 

      Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (EDP Sciences, 2007)
      Text en actes de congrés
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      The neutron capture cross sections of 186,187,188Os have been measured at the CERN neutron time-of-flight facility, n TOF, in the neutron energy range from 1 eV up to 1MeV. In this contribution, we report the results of ...

    • 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
      Accés restringit per política de l'editorial
      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 ...

    • Characterization of a neutron-beta counting system with beta-delayed neutron emitters 

      Agramunt Ros, Jorge; Taín Enríquez, José Luis; Gómez Hornillos, María Belén; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Pretel Sánchez, Carme; Riego Pérez, Albert; Tarifeño Saldivia, Ariel Esteban (2016-01-21)
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      Accés obert
      A new detection system for the measurement of beta-delayed neutron emission probabilities has been characterized using fission products with well known ß-delayed neutron emission properties. The setup consists of BELEN-20, ...

    • Characterization of the n TOF EAR-2 neutron beam 

      Chen, Y.L.; Tassan Got, Laurence; Audouin, Ludmila; Calviño Tavares, Francisco; Casanovas Hoste, Adrià; Cortés Rossell, Guillem Pere (EDP Sciences, 2016)
      Comunicació de congrés
      Accés obert
      The experimental area 2 (EAR-2) at CERNs neutron time-of-flight facility (n TOF), which is operational since 2014, is designed and built as a short-distance complement to the experimental area 1 (EAR-1). The Parallel Plate ...

    • Characterization of the new n_TOF neutron ream: fluence, profile and resolution 

      Bécares, Vicente; Cano Ott, Daniel; Calviani, Marco; Andriamonje, S.; Brugger, Matthias; Andrzejewski, Józef; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén (2011-08-12)
      Article
      Accés restringit per política de l'editorial
      After a halt of four years, the n TOF spallation neutron facility at CERN has resumed operation in November 2008 with a new spallation target characterized by an improved safety and engineering design, resulting in a ...

    • Commissioning of the BRIKEN beta-delayed neutron detector for the study of exotic neutron-rich nuclei 

      Tolosa-Delgado, Alvaro; Agramunt Ros, Jorge; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Tarifeño Saldivia, Ariel Esteban (EDP Sciences, 2018)
      Comunicació de congrés
      Accés obert
      Beta-delayed neutron emission (Beta-n) is a form of radioactive decay in which an electron, an anti-neutrino and one or more neutrons are emitted. This process arises if the energy window of the decay Q_Beta is greater ...

    • Commissioning of the BRIKEN detector for the measurement of very exotic ß-delayed neutron emitters 

      Tolosa Delgado, Alvaro; Agramunt Ros, Jorge; Taín Enríquez, José Luis; Tarifeño Saldivia, Ariel Esteban; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere (2019-05-01)
      Article
      Accés obert
      A new detection system has been installed at the RIKEN Nishina Center (Japan) to investigate decay properties of very neutron-richnuclei. The setup consists of three main parts: a moderated neutron counter, a detection ...

    • Commissionning of the n_TOF-Ph2 facility 

      Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén (2010)
      Comunicació de congrés
      Accés obert
      The white spectrum neutron time-of-flight facility n_TOF is operating at CERN since 2001. The neutron beam has a very high instantaneous flux and high resolution in energy and it is delivered in the experimental area ...

    • Conceptual design of a hybrid neutron-gamma detector for study of ß-delayed neutrons at the RIB facility of RIKEN 

      Tarifeño Saldivia, Ariel Esteban; Taín Enríquez, José Luis; Domingo Pardo, César; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Phong, V.H.; Riego Pérez, Albert; Agramunt Ros, Jorge; Algora, A. (2017-04-07)
      Article
      Accés obert
      The conceptual design of the BRIKEN neutron detector at the radioactive ion beam factory (RIBF) of the RIKEN Nishina Center is reported. The BRIKEN setup is a complex system aimed at detecting heavy-ion implants, ß particles, ...