Ara es mostren els items 37-56 de 263

    • Destruction of the cosmic ¿ -ray emitter Al 26 in massive stars: Study of the key Al 26 (n,p) reaction 

      Lederer-Woods, C.; Woods, Phil J.; Kahl, D.; Aberle, O.; Amaducci, Simone; Andrzejewski, Józef; Audouin, Ludmila; Bacak, Michael; Balibrea-Correa, J.; Barbagallo, Massimo; Becvar, F.; Berthoumieux, Eric; Billowes, J.; Calviño Tavares, Francisco (American Physical Society, 2021-08-01)
      Article
      Accés obert
      The 26 Al ( n , p ) 26 Mg reaction is the key reaction impacting on the abundances of the cosmic ¿ -ray emitter 26 Al produced in massive stars and impacts on the potential pollution of the early solar system with 26 Al ...
    • Detector BELEN para la medida de neutrones retardados por desintegración Beta 

      Riego Pérez, Albert; Cortés Rossell, Guillem Pere; Caballero-Folch, R.; Calviño Tavares, Francisco; Pretel Sánchez, Carme; Batet Miracle, Lluís (2015)
      Text en actes de congrés
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      El experimento DESPEC (DEcay SPECtroscopy) tiene entre sus objetivos el estudio de la emisión de neutrones retardados por desintegración beta. Se ha diseñado construido y puesto a prueba un prototipo de un detector ...
    • Dissemination of data measured at the CERN n TOF facility 

      Dupont, E.; Otuka, N.; Cabellos, O.; Calviño Tavares, Francisco; Casanovas Hoste, Adrià; Cortés Rossell, Guillem Pere; Tarifeño Saldivia, Ariel Esteban (EDP Sciences, 2016)
      Comunicació de congrés
      Accés obert
      The n TOF neutron time-of-flight facility at CERN is used for high quality nuclear data measurements from thermal energy up to hundreds of MeV. In line with the CERN open data policy, the n TOF Collaboration takes actions ...
    • 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
      Accés restringit per política de l'editorial
    • Evaluation of geometric, scatter and septal penetration components in fan beam collimators using Monte Carlo simulation 

      Cot Sanz, Alberto; Pareto, D; Sempau, J; Bullich, S; Pavia, J; Calviño Tavares, Francisco; Ros, D (IEEE, 2000)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The quantitative analysis of SPECT data requires an accurate determination of the collimator point spread function (PSF). The aim of this work is to characterize the PSFs of fan beam and parallel collimators by using ...
    • Experimental challenges for the Re/Os clock 

      Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (2006)
      Text en actes de congrés
      Accés obert
      The stellar neutron capture cross sections of 186Os and 187Os are fundamental for the Re/Os cosmo-chronometer since they are de ning the s-process abundance of 187Os. Subtraction of the s-component from the solar 187Os ...
    • 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)
      Comunicació de congrés
      Accés obert
      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 ...
    • 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
      Accés restringit per política de l'editorial
      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 setup and procedure for the measurement of the 7Be(n,alpha)alpha reaction at n_TOF 

      Cosentino, L.; Musumarra, A.; Barbagallo, Massimo; Calviño Tavares, Francisco; Casanovas, Adria; Cortés Rossell, Guillem Pere; Riego Pérez, Albert; Tarifeño Saldivia, Ariel Esteban (2016-09-11)
      Article
      Accés obert
      The newly built second experimental area EAR2 of the n_TOF spallation neutron source at CERN allows to perform (n, charged particles) experiments on short-lived highly radioactive targets. This paper describes a detection ...
    • Experimental setup and procedure for the measurement of the 7Be(n,p)7Li reaction at n_TOF 

      Barbagallo, Massimo; Andrzejewski, Józef; Mastromarco, M.; Calviño Tavares, Francisco; Casanovas Hoste, Adrià; Cortés Rossell, Guillem Pere; Tarifeño Saldivia, Ariel Esteban (2018-04-11)
      Article
      Accés obert
      Following the completion of the second neutron beam line and the related experimental area (EAR2) at the n_TOF spallation neutron source at CERN, several experiments were planned and performed. The high instantaneous neutron ...
    • Experimental study of the 91Zr(n, gamma ) reaction up to 26 keV 

      Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (2008-10)
      Article
      Accés restringit per política de l'editorial
      The neutron capture cross sections of the Zr isotopes are relevant to studies in nuclear structure, nuclear astrophysics, and nuclear technology. The valence neutron of 91Zr with respect to the neutron magic nucleus 90Zr ...
    • Experiments with neutron beams for the astrophysical s process 

      Lederer, Claudia; Altstadt, Sebastian; Andrzejewski, Józef; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén (Institute of Physics (IOP), 2013)
      Text en actes de congrés
      Accés obert
      Neutron capture cross sections are the key nuclear physics input to study the slow neutron capture process, which is responsible for forming about half of the elemental abundances above Fe. Stellar neutron capture cross ...
    • First determination of ß -delayed multiple neutron emission beyond A=100 through direct neutron measurement: the P2n value of Sb 136 

      Caballero-Folch, R.; Dillmann, Iris; Agramunt Ros, Jorge; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Riego Pérez, Albert; Salvador Castiñeira, Paula Genoveva; Tarifeño Saldivia, Ariel Esteban (American Physical Society (APS), 2018-09-10)
      Article
      Accés obert
      Background: ß-delayed multiple neutron emission has been observed for some nuclei with A=100, being the 100Rb the heaviest ß2n emitter measured to date. So far, only 25P2n values have been determined for the ˜300 nuclei ...
    • First evidence of multiple ß-delayed neutron emission for isotopes with A > 100 

      Caballero-Folch, R.; Dillmann, I.; Agramunt Ros, Jorge; Tan, J.L.; Domingo Pardo, César; Äystö, J.; Calviño Tavares, Francisco; Canete, L.; Eronen, T.; Ganioglu, E.; Gelletly, W.; Gorelov, D.; Guadilla, V.; Hakala, J.; Jokinen, A.; Kankainen, A.; Kolhinen, V.S.; Koponen, J.; Marta, M.; Mendoza Cembrano, Emilio; Montaner Piza, A.; Moore, I.; Nobs, Ch.; Orrigo, S.; Penttila, H.; Pohjalainen, I.; Reinikainen, J.; Riego Pérez, Albert; Rinta-Antila, S.; Rubio, B.; Salvador Castiñeira, Paula Genoveva; Simutkin, V.; Voss, A.; Cortés Rossell, Guillem Pere (2017-03-01)
      Article
      Accés obert
      The beta-delayed neutron emission probability, P-n, of very neutron-rich nuclei allows us to achieve a better understanding of the nuclear structure above the neutron separation energy, S-n. The emission of neutrons can ...
    • First Measurement of 72Ge(n gamma) at n-TOF 

      Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Tarifeño Saldivia, Ariel Esteban (EDP Sciences, 2018)
      Text en actes de congrés
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      The slow neutron capture process (s-process) is responsible for producing about half of the elemental abundances heavier than iron in the universe. Neutron capture cross sections on stable isotopes are a key nuclear physics ...
    • First measurement of several beta-delayed neutron emitting isotopes beyond N=126 

      Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Algora, A.; Benlliure, J.; Bowry, M.; Cortes, G.; Dillmann, I.; Estradé, A.; Farinon, F.; Geissel, H.; Gelletly, W.; Heil, M.; Kurcewicz, J.; Marganiec, J.; Nociforo, C.; Pietri, S.; Prochazka, A.; Maurice, S.; Rubio, B.; Smith, K.M; Taín Enríquez, José Luis; Weick, H.; Woody, R.W. (2016-06-29)
      Article
      Accés obert
      The beta-delayed neutron emission probabilities of neutron rich Hg and Tl nuclei have been measured together with beta-decay half-lives for 20 isotopes of Au, Hg, Tl, Pb, and Bi in the mass region N greater than or similar ...
    • First results from the HENSA/ANAIS collaboration at the Canfranc Underground Laboratory 

      Mont i Geli, Nil; Tarifeño Saldivia, Ariel Esteban; Orrigo, S.; Beristáin Jiménez, José Antonio; Agramunt Ros, Jorge; Camarero Palao, Julio A.; Bemmerer, D.; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Dillmann, Iris; Tolosa Delgado, Alvaro (Institute of Physics (IOP), 2021-12-01)
      Article
      Accés obert
      The HENSA/ANAIS collaboration aims for the precise determination of the neutron flux that could affect ANAIS-112, an experiment looking for the dark matter annual modulation using NaI(Tl) scintillators. In this work, the ...
    • First results of the new n_TOF spallation target commissioning 

      Berthoumieux, Eric; Andriamonje, S.; Andrzejewski, Józef; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere (2009)
      Text en actes de congrés
      Accés obert
      The Neutron Time of Flight facility n_TOF located at CERN started to take data in 2001 . Due to an increase of radioactivity released in the cooling water the experiment was stopped by end of 2004 . In 2008 a new spallation ...
    • 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
      Accés obert
      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 cross-section measurements of 233-U, 245-Cm and 241,243-Am at CERN n_TOF facility 

      Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (2011-08-12)
      Article
      Accés restringit per política de l'editorial
      Neutron-induced ssion cross-sections of minor actinides have been measured using the n TOF white neutron source at CERN, Geneva, as part of a large experimental program aiming at collecting new data relevant for nuclear ...