Ara es mostren els items 1-20 de 100

    • 197-Au(n,gamma ) cross section in the unresolved resonance region 

      Poch Parés, Agustí; Praena, J.; Pretel Sánchez, Carme; Igashira, M.; Quesada, J.; Pigni, M.T.; Jericha, E.; Plag, R.; Isaev, S.; Plompen, A.; Karadimos, D.; Cennini, P.; Carrapiço, C.; Carrillo de Albornoz, A.; Cano-Ott, D.; Capote, R.; Calviani, M.; Calviño Tavares, Francisco; Belloni, F.; Berthoumieux, E.; Perrot, L.; Martínez, T.; Pavlopoulos, P.; Pancin, J.; Papachristodoulou, C.; O'Brien, S.; Oshima, M.; Patronis, N.; Pavlik, A.; Papadopoulos, C.; Paradela, C.; Oberhummer, H.; Lozano, M.; Neves, F.; Mosconi, M.; Tassan-Got, L.; Mastinu, P.; Tarrío, D.; Mendoza, E.; Terlizzi, R.; Milazzo, P.M.; Tavora, L.; Moreau, C.; Losito, R.; Vaz, P.; Vannini, G.; Márques, L.; Villamarin, D.; Marrone, S.; Ventura, A.; Tagliente, G.; Marganiec, J.; Tain, J.L.; Lukic, S.; Baumann, P.; Barbagallo, M.; Wisshak, K.; Plukis, A.; Badurek, G.; Lindote, A.; Wiescher, M.; Audouin, L.; Lopes, I.; Wendler, H.; Assimakopoulos, P.A.; Lampoudis, C.; Walter, S.; Andrzejewski, J.; Kadi, Y.; Leeb, H.; Andriamonje, S.; Kossionides, E.; Krticka, M.; Álvarez-Velarde, F.; Álvarez, H.; Aerts, G.; Becvár, F.; Konovalov, V.; Vlastou, R.; Rauscher, T.; Koehler, P.; Voss, F.; Ketlerov, V.; Kerveno, M.; Vlachoudis, V.; Karamanis, D.; Reifarth, R.; Abbondanno, U.; Griesmayer, E.; Lederer, C.; Guerrero, C.; Colonna, N.; Haas, B.; Domingo-Pardo, C.; Haight, R.; Gunsing, F.; Heil, M.; Käppeler, F.; Herrera-Martinez, A.; Massimi, C.; Mengoni, A.; Wallner, A.; Sarmento, R.; Savvidis, I.; Santos, C.; Sarchiapone, L.; Rullhusen, P.; Gramegna, F.; Salgado, J.; Goverdovski, A.; Rubbia, C.; Gonzalez-Romero, E.; Rudolf, G.; Goncalves, I.; Stephan, C.; Rosetti, M.; Ferreira-Marques, R.; Fitzpatrick, L.; Ferrant, L.; Ferrari, A.; Furman, W.; Frais-Koelbl, H.; Fujiii, K.; Duran, I.; Embid-Segura, M.; Eleftheriadis, C.; David, S.; Dillmann, I.; Dolfini, R.; Dridi, W.; Cortés Rossell, Guillem Pere; Couture, A.; Cox, J.; Dahlfors, M.; Chiaveri, E.; Chepel, V. (2011-03-17)
      Article
      Accés restringit per política de l'editorial
      The cross section of the reaction 197Au(n,γ ) was measured with the time-of-flight technique at the n TOF (neutron time-of-flight) facility in the unresolved resonance region between 5 and 400 keV using a pair of C6D6 (where ...
    • 237-Np(n,f) cross section: new data and present status 

      Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Poch Parés, Agustí; Pretel Sánchez, Carme (2011-08-12)
      Article
      Accés restringit per política de l'editorial
      In this document, we present the nal result obtained at the n TOF experiment for the neutron- induced ssion cross section of the 237Np, from the ssion threshold up to 1 GeV. The method applied to get this result is ...
    • 96Zr(n,gamma ) measurement at the n TOF facility at CERN 

      Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Pretel Sánchez, Carme; Poch Parés, Agustí (2011-03-17)
      Article
      Accés restringit per política de l'editorial
      The (n,γ ) cross section of 96Zr has been investigated at the CERN n TOF spallation neutron source. Highresolution time-of-flight measurements using an enriched ZrO2 sample allowed us to analyze 15 resonances below 40 ...
    • 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
      Accés obert
      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 ...
    • 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
      Accés obert
      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
      Accés obert
      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)
      Text en actes de congrés
      Accés obert
      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 ...
    • 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
      Accés obert
      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 ...
    • Characterization of a neutron-beta counting system with beta-delayed neutron emitters 

      Agramunt Ros, Jorge; Taín, J.L.; 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
      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, ...
    • Cogeneració amb piles de combustible: aplicació a edificis de la UPC 

      Martínez, Cristina; Sánchez, Carlos; Sancho, Javier; Simon, Javier; Pretel Sánchez, Carme; Llorca Piqué, Jordi (Centre per a la Sostenibilitat, 2009-07-09)
      Text en actes de congrés
      Accés obert
      Les piles de combustible són dispositius electroquímics que transformen directament l’energia d’un combustible químic en energia elèctrica i calor. Entre els seus avantatges destaquen una eficiència energètica molt elevada, ...
    • 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
      Accés obert
      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 ...
    • 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 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 ...
    • First measurements with the BEta deLayEd Neutron Detector (BELEN-20) at JYFLTRAP 

      Martínez, T.; Gómez Hornillos, María Belén; Rissanen, J.; Tain, J.L.; 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)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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 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 ...
    • FONAMENTS D'ENGINYERIA NUCLEAR (Examen 1r Quadr.) 

      Pretel Sánchez, Carme (Universitat Politècnica de Catalunya, 2008-01-17)
      Examen
      Accés restringit a la comunitat UPC
    • High accuracy 235U(n,f) data in the resonance energy region 

      Paradela, C.; Durán, I.; Tassan Got, Laurence; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Pretel Sánchez, Carme (EDP Sciences, 2015)
      Comunicació de congrés
      Accés obert
      The 235U neutron-induced cross section is widely used as reference cross section for measuring other fission cross sections, but in the resonance region it is not considered as an IAEA standard because of the scarce ...
    • High accuracy U-235(n,f) data in the resonance energy region 

      Paradela, C.; Durán, I.; Tassan Got, Laurence; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Pretel Sánchez, Carme (EPJ Web of Conferences, 2015)
      Text en actes de congrés
      Accés obert
      The U-235 neutron-induced cross section is widely used as reference cross section for measuring other fission cross sections, but in the resonance region it is not considered as an IAEA standard because of the scarce ...
    • 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
      Accés restringit per política de l'editorial
      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. ...
    • 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
      Accés obert
      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. ...