Browsing by Author "Gómez Hornillos, María Belén"

Now showing items 1-20 of 56

    • 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
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      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 ...

    • 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)
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      At then_TOFexperimentatCERNadedicatedsingle-crystalchemicalvapordeposition(sCVD)Diamond Mosaic-Detectorhasbeendevelopedfor(n,α) cross-sectionmeasurements.Thedetector,characterized by anexcellenttimeandenergyresolution, ...

    • 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)
      Conference report
      Open Access
      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 ...

    • 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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    • 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)
      Article
      Open Access
      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 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)
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      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 ...

    • Commissionning of the n_TOF-Ph2 facility 

      Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén (2010)
      Conference lecture
      Open Access
      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 ...

    • Enhanced gamma-ray emission from neutron unbound states populated in beta decay 

      Taín Enríquez, José Luis; Valencia, E.; Algora, A.; Rubio, B.; Maurice, S.; Gelletly, W.; Fallot, M.; Rissanen, J.; Eronen, T.; Äystö, J.; Batist, L.; Bowry, M.; Caballero Folch, Roger; Gómez Hornillos, María Belén; Gorlychev, V.; Mendoza, E.; Moore, I.; Penttila, H.; Reponen, M.; Sonnenschein, V. (2015-08-06)
      Article
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    • 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)
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    • 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)
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      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 ...

    • 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)
      Conference report
      Open Access
      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 measurements with the BEta deLayEd Neutron Detector (BELEN-20) at JYFLTRAP 

      Martínez, T.; Gómez Hornillos, María Belén; Rissanen, J.; Taín Enríquez, José Luis; Algora, A.; Cano Ott, Daniel; Agramunt, J.; Gorlychev, V.; Caballero Folch, Roger; Kolhinen, V.S.; Karvonen, P.; Jokinen, Ari; Hakala, P.J.; Garcia, A.; Eronen, T.; Elomaa, V.V.; Cortés Rossell, Guillem Pere; Äystö, J.; Achouri, L.; Moore, I.; Valencia, E; Reponen, M.; Sonnenschein, V.; Podolyak, Z.; Pretel Sánchez, Carme; Parlog, M.; Penttila, H. (IOPScience, 2010)
      Conference report
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      A prototype version of the BEta deLayEd Neutron detector, which is being developed for the FAIR/DESPEC experiment, has been used for the first time in an experiment at JYFL (Finland). This detector is based on 3He counters ...

    • Fission fragment angular distribution of 232Th(n,f) at the CERN n TOF facility 

      Tarrío, D.; Audouin, Ludmila; Tassan Got, Laurence; Altstadt, Sebastian; Andrzejewski, Józef; Barbagallo, Massimo; Bécares, Vicente; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén; Riego Pérez, Albert (2014-05-01)
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      The angular distribution of fragments emitted in neutron-induced fission of 232Th was measured in the white spectrum neutron beam at the n TOF facility at CERN. A reaction chamber based on Parallel Plate Avalanche Counters ...

    • 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)
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      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 precision measurement of the radiative capture cross section of 238U at the n TOF CERN facility 

      Mingrone, Federica; Altstadt, Sebastian; Andrzejewski, Józef; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén; Riego Pérez, Albert (EDP Sciences, 2016)
      Conference report
      Open Access
      The importance of improving the accuracy on the capture cross-section of 238U has been addressed by the Nuclear Energy Agency, since its uncertainty significantly affects the uncertainties of key design parameters for both ...

    • High-accuracy determination of the 238U/ 235U fission cross section ratio up to ˜ 1 GeV at n_TOF at CERN 

      Paradela, C.; Calviani, Marco; Tarrío, D.; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén; Pretel Sánchez, Carme; Riego Pérez, Albert (2015-02-09)
      Article
      Open Access
      The U238 to U235 fission cross section ratio has been determined at n_TOF up to ˜1 GeV, with two different detection systems, in different geometrical configurations. A total of four datasets has been collected and compared. ...

    • High-accuracy determination of the neutron flux at n TOF 

      Barbagallo, M.; Guerrero, C.; Tsinganis, A.; Tarrío, D.; Altstadt, S.; Andriamonje, S.; Andrzejewski, J.; Audouin, L.; Bécares, V.; Becvar, F.; Belloni, Fabio; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén; Hernández-Prieto, A.; Riego Pérez, Albert (2013-12-18)
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      The neutron flux of the n TOF facility at CERN was measured, after installation of the new spallation target, with four different systems based on three neutron-converting reactions, which represent accepted cross sections ...

    • Improved neutron capture cross section measurements with the n_TOF total absorption Cclorimeter 

      Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén (2011-08-12)
      Article
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      The n TOF collaboration operates a Total Absorption Calorimeter (TAC) [1] for measuring neu- tron capture cross-sections of low-mass and/or radioactive samples. The results obtained with the TAC have led to a substantial ...

    • 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 neutron-induced reactions at n TOF: an overview of the 2009-2012 experimental program 

      Altstadt, Sebastian; Andrzejewski, Józef; Audouin, Ludmila; Barbagallo, Massimo; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Gómez Hornillos, María Belén; Riego Pérez, Albert (2014-05)
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      The neutron time-of-flight facility n TOF is operating at CERN (Switzerland) since 2001, having started in 2009 a new campaign with an upgraded spallation target. The ambitious program carried out includes a large number ...