Now showing items 1-20 of 63

  • 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 ...
  • 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)
    Conference report
    Open Access
    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 ...
  • 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)
    Conference report
    Open Access
    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, ...
  • Astrophysics at n-TOF facility at CERN 

    Tagliente, G.; Abbondanno, U.; Aerts, G.; Calviño Tavares, Francisco; Pretel Sánchez, Carme (Institute of Physics (IOP), 2010)
    Conference report
    Open Access
    The neutron time of flight (n_TOF) facility at CERN is a spallation neutron source with white neutron energy spectrum (from thermal to several GeV), covering the full energy range of interest for nuclear astrophysics, in ...
  • Charm photoproduction results from NA14' 

    Álvarez, M.P.; Barate, R.; Calviño Tavares, Francisco (Springer, 1988)
    Conference report
    Open Access
    High statistics samples of reconstructed charmed particles have been obtained by the NA14' experiment. Signals are presented in a variety of decay channels, and are used for the measurement of lifetimes and the study of ...
  • Commissioning of the BRIKEN detector for the measurement of very exotic ß-delayed neutron emitters 

    Tolosa Delgado, Alvaro; Agramunt Ros, Jorge; Taín, J.L.; Tarifeño Saldivia, Ariel Esteban; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere (2019-05-01)
    Article
    Restricted access - publisher's policy
    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 ...
  • Cross section measurements of 155,157Gd(n,gamma) induced by thermal and epithermal neutrons 

    Mastromarco, M.; Aberle, O.; Calviño Tavares, Francisco; Casanovas Hoste, Adrià; Cortés Rossell, Guillem Pere; Tarifeño Saldivia, Ariel Esteban (2019-01-28)
    Article
    Restricted access - publisher's policy
    Neutron capture cross section measurements on 155Gd and 157Gd were performed using the time-of-flight technique at the n_TOF facility at CERN on isotopically enriched samples. The measurements were carried out in the n_TOF ...
  • Development and validation of a simplified tritium migration simulation tool for its dynamics monitoring at ITER 

    Sojo Gordillo, Jose Manuel (Universitat Politècnica de Catalunya, 2018-04-27)
    Master thesis
    Open Access
    El TFM se enmarca en un proyecto R&D del CDTI con la empresa PROCON SYSTEMS, la UPC y el IQS (URL). Uno de los objetivos del proyecto Demostración Prototípica de Sistemas de Control, Adquisición de Datos, Monitorización ...
  • Elaboration of the TDR for the BELEN Detector 

    Torner Carrion, Aleix (Universitat Politècnica de Catalunya, 2013-11)
    Master thesis (pre-Bologna period)
    Open Access
    El projecte final de carrera descrit a continuació tracta sobre l’elaboració del Technical Design Report (TDR) o document tècnic de disseny del detector de neutrons BELEN concebut i desenvolupat a la UPC. És necessari ...
  • Enhanced gamma-ray emission from neutron unbound states populated in beta decay 

    Tain, J. L.; 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
    Open Access
  • Enhancing the sensitivity and robustness of label-free imaging systems via stimulated Raman adiabatic passage 

    León Montiel, R.D.J.; Pérez Torres, Juan (2012-01)
    Article
    Restricted access - publisher's policy
    We show that the sensitivity and robustness of a label-free optical imaging technique based on stimulated Raman scattering (SRS) can be enhanced by using resonant optical transitions in a Raman adiabatic passage scheme. ...
  • Estudi de la detecció del Xenó en les explosions nuclears subterrànies 

    Sansaloni Florit, Francesc (Universitat Politècnica de Catalunya / Universitat de Barcelona, 2009-12)
    Master thesis
    Open Access
    El 9 d’octubre del 2006 Corea del Nord dugué a terme una prova nuclear. Les estacions de vigilància del CTBTO (Comprensive Nuclear Test Ban Treaty Organization) van detectar aquesta explosió mitjançant la xarxa de vigilància ...
  • Estudio con MCNPX de un módulo de prueba de la envoltura regeneradora de tritio para el reactor ITER 

    Juárez Mañas, Rafael (Universitat Politècnica de Catalunya / Universitat de Barcelona, 2009-09-01)
    Master thesis
    Restricted access - author's decision
    En el estudio presente se exponen una serie de experiencias reunidas del intento de establecer una metodología de traducción de geometrías generadas con CATIA a archivos de inputs reconocibles por MCNPX. En concreto, se ...
  • Experimental determination of the activity of a 252Cf source 

    Caballero Folch, Roger (Universitat Politècnica de Catalunya / Universitat de Barcelona, 2011-06)
    Master thesis
    Open Access
    An important research line in nuclear physics nowadays is the study of unstable nuclei. Within this, one area of interest is the study of delayed neutron emission which is of relevance for di erent elds such as astrophysics, ...
  • 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
    Open Access
    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 ...
  • 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
    Open Access
    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 Measurement of 72Ge(n gamma) at n-TOF 

    Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Tarifeño Saldivia, Ariel Esteban; (EDP Sciences, 2018)
    Conference report
    Open Access
    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 tests of the applicability of gamma-ray imaging for background discrimination in time-of-flight neutron capture measurements 

    Perez Magan, D. L.; Caballero Ontanaya, L.; Domingo Pardo, César; Agramunt Ros, Jorge; Albiol, F.; Casanovas Grau, Albert; Gonzalez, A.; Guerrero, C.; Lerendegui Marco, J.; Tarifeño Saldivia, Ariel Esteban (2016-07-01)
    Article
    Open Access
    In this work we explore for the first time the applicability of using gamma-ray imaging in neutron capture measurements to identify and suppress spatially localized background. For this aim, a pinhole gamma camera is ...
  • High-accuracy 233U(n, f ) cross-section measurement at the white-neutron source n TOF from near-thermal to 1 MeV neutron energy 

    Sarchiapone, L.; Savvidis, I.; Konovalov, V.; Stephan, C.; Tagliente, G.; Krticka, M.; Rudolf, G.; Kossionides, E.; Rullhusen, P.; Leeb, H.; Salgado, J.; Capote, R.; Cano-Ott, D.; Mengoni, A.; Calviño Tavares, Francisco; Milazzo, P.M.; Berthoumieux, E.; Massimi, C.; Berthier, B.; Mastinu, P.; Belloni, F.; Lampoudis, C.; Marrone, S.; Becvár, F.; Martínez, T.; Baumann, P.; Badurek, G.; Audouin, L.; Carrapiço, C.; Marganiec, J.; Lukic, S.; Lozano, M.; Santos, C.; Lopes, I.; Lindote, A.; Tain, J.L.; Tassan-Got, L.; Assimakopoulos, P.A.; Kadi, Y.; Calviani, M.; Karadimos, D.; Praena, J.; Karamanis, D.; Abbondanno, U.; Ketlerov, V.; Aerts, G.; Kerveno, M.; Álvarez, H.; Koehler, P.; Álvarez-Velarde, F.; Andriamonje, S.; Andrzejewski, J.; Vlachoudis, V.; Vlastou, R.; Villamarin, D.; Vincente, M.C.; Käppeler, F.; Vaz, P.; Jericha, E.; Ventura, A.; Igashira, M.; Terlizzi, R.; Herrera-Martinez, A.; Vannini, G.; Voss, F.; Guerrero, C.; Tavora, L.; Gunsing, F.; Goverdovski, A.; Gramegna, F.; Heil, M.; Haas, B.; Haight, R.; Furman, W.; Gonzalez-Romero, E.; Goncalves, I.; Ferrant, L.; Ferrari, A.; Ferreira-Marques, R.; Fujiii, K.; Dridi, W.; Duran, I.; Eleftheriadis, C.; Embid-Segura, M.; Domingo-Pardo, C.; Dillmann, I.; David, S.; Cox, J.; Dahlfors, M.; Cortés Rossell, Guillem Pere; Couture, A.; Chiaveri, E.; Colonna, N.; Cennini, P.; Chepel, V.; Rubbia, C.; Rosetti, M.; Plukis, A.; Poch Parés, Agustí; Plag, R.; Plompen, A.; Rauscher, T.; Reifarth, R.; Pretel Sánchez, Carme; Quesada, J.; Pigni, M.T.; Perrot, L.; Pavlopoulos, P.; Papadopoulos, C.; Paradela, C.; Wisshak, K.; Patronis, N.; Pavlik, A.; O'Brien, S.; Pancin, J.; Papachristodoulou, C.; Mosconi, M.; Moreau, C.; Oberhummer, H.; Walter, S.; Neves, F.; Wiescher, M. (2009-10-08)
    Article
    Restricted access - publisher's policy
    The 233U(n,f ) cross section has been measured at the white neutron source n TOF in a wide energy range with a dedicated fission ionization chamber. We report here the results from ∼30 meV to 1 MeV neutron energy. ...
  • Influence of copper on nickel-based catalysts in the conversion of glycerol 

    Miranda Morales, Bárbara C.; Chimentao, Ricardo J; Szanyi, J; Braga, A.H.; Santos, Jeannette B O; Gispert Guirado, Francesc; Llorca Piqué, Jordi; Medina Cabello, Francisco (2015-05-01)
    Article
    Open Access
    The catalytic transformation of glycerol to value-added compounds was investigated over bimetallic Ni-Cu/gamma-Al2O3 catalysts with Ni/Cu atomic ratios of 8/1, 4/1, 2/1, 1/1, 1/2, 1/4, and 1/8. XPS analysis revealed that ...