Now showing items 1-12 of 160

  • Regulatory framework for nuclear power plant fire safety and risk assessments from global perspective 

    Asamoah, Matthew; Díaz Bayona, Pedro; Dies Llovera, Javier; Blas del Hoyo, Alfredo de (2019)
    Article
    Restricted access - publisher's policy
    The evolution of regulatory framework for fire safety and risk assessments at Nuclear Power Plants (NPPs) is on-going globally. The first generation commercial NPPs were designed and operated with minimal radiological risk ...
  • Validation of a BEPU methodology through a blind benchmark activity at the PKL test facility 

    Freixa Terradas, Jordi; Martínez Quiroga, Víctor Manuel; Casamor Vidal, Max; Reventós Puigjaner, Francesc Josep; Mendizabal Sanz, Rafael (American Nuclear Society (ANS), 2019)
    Conference report
    Restricted access - publisher's policy
    Validation is a key step in the field of thermal hydraulics and has played a crucial role in the implementation of system codes. These codes are then included in licensing methodologies being those either best estimate ...
  • Perfecting the use of hybrid models in scaling analysis 

    Reventós Puigjaner, Francesc Josep; Martínez Quiroga, Víctor Manuel; Freixa Terradas, Jordi (2019-12-01)
    Article
    Open Access
    Different methodologies devoted to qualify Nuclear Power Plant (NPP) system-code nodalizations rely on Kv-scaled calculations as an essential tool for their purpose. In the framework of Power-To-Volume strategy, a Kv-scaled ...
  • On the scaling of uncertainties in thermal hydraulic system codes 

    Casamor Vidal, Max; Martínez Quiroga, Víctor Manuel; Reventós Puigjaner, Francesc Josep; Mendizabal Sanz, Rafael; Freixa Terradas, Jordi (2020-02-01)
    Article
    Restricted access - publisher's policy
    The present work addresses the scaling e ect on safety margins and uncertainties for best estimate plus uncertainty (BEPU) methodologies. The results of an experiment from the OECD/NEA ROSA-2 project at the LSTF facility ...
  • Strong one-neutron emission from two-neutron unbound states in Beta decays of the r-process nuclei 86,87 Ga 

    Yokoyama, R.; Grzywacz, Robert; Rasco, B. Charles; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Tarifeño Saldivia, Ariel Esteban (American Physical Society (APS), 2019-09-19)
    Article
    Open Access
    Beta-delayed one-neutron and two-neutron branching ratios (P1n and P2n) have been measured in the decay of A = 84 to 87 Ga isotopes at the Radioactive-Isotope Beam Factory (RIBF) at the RIKEN Nishina Center using a ...
  • Measurement of the 235U(n, f) cross section relative to the 6Li(n, t) and 10B(n, a) standards from thermal to 170 keV neutron energy range at n_TOF 

    Amaducci, Simone; Cosentino, Luigi; Barbagallo, Massimo; Casanovas Hoste, Adrià; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Tarifeño Saldivia, Ariel Esteban (2019-07-26)
    Article
    Open Access
    The 235U(n, f ) cross section was measured at n_TOF relative to 6Li(n, t) and 10B(n,a) , with high resolution ( L=183.49(2) m) and in a wide energy range (25meV-170keV) with 1.5% systematic uncertainty, making use of a ...
  • Observation of a us isomer in 134-In: Proton-neutron coupling “southeast” of 132-Sn 

    Phong, V.H.; Lorusso, G.; Calviño Tavares, Francisco; Cortés Rossell, Guillem Pere; Tarifeño Saldivia, Ariel Esteban (American Physical Society (APS), 2019-07-29)
    Article
    Open Access
    We report on the observation of a microsecond isomeric state in the single-proton-hole, three-neutron-particlenucleus134In. The nuclei of interest were produced by in-flight fission of a238U beam at the Radioactive IsotopeBeam ...
  • Quantification of the uncertainty of the physical models in the system thermal-hydraulic codes – PREMIUM benchmark 

    Skorek, Tomasz; de Crécy, Agnès; Kovtonyuk, Andriy; de Alfonso, Elsa; Reventós Puigjaner, Francesc Josep; Freixa Terradas, Jordi (2019-08-10)
    Article
    Restricted access - publisher's policy
    PREMIUM (Post BEMUSE Reflood Models Input Uncertainty Methods) was an activity launched with the aim of pushing forward the methods of quantification of physical model uncertainties in thermal-hydraulic codes. The benchmark ...
  • Measurement of the 244Cm and 246Cm neutron-induced capture cross sections at the n_TOF facility 

    Alcayne Aicua, Víctor; Mendoza Cembranos, Emilio; Kimura, Atsushi; Calviño Tavares, Francisco; Casanovas Hoste, Adrià; Cortés Rossell, Guillem Pere; Tarifeño Saldivia, Ariel Esteban (EPJ Web of Conferences, 2019)
    Conference report
    Open Access
    The neutron capture reactions of the 244Cm and 246Cm isotopes open the path for the formation of heavier Cm isotopes and heavier elements such asThe neutron capture reactions of the 244Cm and 246Cm isotopes open the path ...
  • Preliminary results on the 233U capture cross section and alpha ratio measured at n_TOF (CERN) with the fission tagging technique 

    Bacak, M.; Aiche, Mourad; Bélier, Gilbert; Calviño Tavares, Francisco; Casanovas Hoste, Adrià; Cortés Rossell, Guillem Pere; Tarifeño Saldivia, Ariel Esteban (EPJ Web of Conferences, 2019)
    Conference report
    Open Access
    233U is of key importance among the fissile nuclei in the Th-U fuel cycle. A particularity of 233U is its small neutron capture cross-section, which is on average about one order of magnitude lower than the fission ...
  • Fission program at n_TOF 

    Tassan Got, Laurence; Colonna, Nicola; Calviño Tavares, Francisco; Casanovas Hoste, Adrià; Tarifeño Saldivia, Ariel Esteban; Cortés Rossell, Guillem Pere (EPJ Web of Conferences, 2019)
    Conference report
    Open Access
    Since its start in 2001 the n_TOF collaboration developed a measurement program on fission, in view of advanced fuels in new generation reactors. A special effort was made on measurement of cross sections of actinides, ...
  • Neutron induced reactions for the s process, and the case of Fe and Ni isotopes 

    Lederer, Claudia; Altstadt, Sebastian; Calviño Tavares, Francisco; Andriamonje, S.; Cortés Rossell, Guillem Pere (PoS - Proceedings of Science, 2012)
    Conference report
    Open Access
    Neutron capture cross sections are the key nuclear physics input to understand nucleosynthesis of the slow neutron capture process (s process). At the neutron time of flight facility n_TOF at CERN neutron capture cross ...