Now showing items 1-20 of 109

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      197Au(n,γ) cross section in the resonance region  [Article]

      Massimi, Christian; Domingo Pardo, César; Vannini, Gianni; Audouin, Laurent; Guerrero Sánchez, Carlos; Abbondanno, U.; Wisshak, K.; Capote, Roberto; Lozano Leyva, Manuel Luis; Quesada Molina, José Manuel (The American Physical Society, 2010)
      The (n,γ) cross section of 197Au has been measured at n-TOF in the resolved resonance region, up to 5keV, with the aim of improving the accuracy in an energy range where it is not yet considered standard. The measurements ...
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      197Au(n,γ) cross section in the unresolved resonance region  [Article]

      Lederer, C.; Colonna, Nicola; Domingo-Pardo, C.; Gunsing, F.; Käppeler, F.; Massimi, Christian; Wisshak, K.; Capote, Roberto; Praena Rodríguez, Javier; Quesada Molina, José Manuel (American Physical Society, 2011)
      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 C 6D6 ...
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      238U(n, γ) reaction cross section measurement with C6D6 detectors at the n_TOF CERN facility  [Article]

      Cortés Giraldo, Miguel Antonio; Praena Rodríguez, Javier; Quesada Molina, José Manuel; Sabaté Gilarte, Marta; Mingrone, F; Massimi, Christian; Vannini, Gianni (EDP Sciences, 2014)
      The radiative capture cross section of 238U is very important for the developing of new reactor technologies and the safety of existing ones. Here the preliminary results of the 238U(n,γ) cross section measurement performed ...
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      62 Ni(n, γ) and 63 Ni(n, γ) cross sections measured at the n_TOF facility at CERN  [Article]

      Lederer, C.; Massimi, Christian; Berthoumieux, E.; Colonna, Nicola; Dressler, R.; Guerrero Sánchez, Carlos; Žugec, P.; Cortés Giraldo, Miguel Antonio; Lozano Leyva, Manuel Luis; Praena Rodríguez, Javier; Quesada Molina, José Manuel (American Physical Society, 2014)
      The cross section of the 62Ni(n,γ) reaction was measured with the time-of-flight technique at the neutron time-of-flight facility n-TOF at CERN. Capture kernels of 42 resonances were analyzed up to 200 keV neutron energy ...
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      7Be(n, p) 7Li Reaction and the Cosmological Lithium Problem: Measurement of the Cross Section in a Wide Energy Range at n_TOF at CERN  [Article]

      Damone, L.; Barbagallo, M.; Mastromarco, Mario; Mengoni, A.; Cosentino, L.; Maugeri, E.; Heinitz, S.; Schumann, D.; Cortés Giraldo, Miguel Antonio; Guerrero Sánchez, Carlos; Lerendegui Marco, Jorge; Praena Rodríguez, Javier; Quesada Molina, José Manuel; Sabaté Gilarte, Marta (APS Physics, 2018-07-24)
      We report on the measurement of the 7Be(n,p)7Li cross section from thermal to approximately 325 keV neutron energy, performed in the high-flux experimental area (EAR2) of the n_TOF facility at CERN. This reaction plays a ...
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      7Be(n,α)4He Reaction and the Cosmological Lithium Problem: Measurement of the Cross Section in a Wide Energy Range at n_TOF at CERN  [Article]

      Cortés Giraldo, Miguel Antonio; Lerendegui Marco, Jorge; Quesada Molina, José Manuel; Barbagallo, M.; Musumarra, A.; Consentino, L.; Maugeri, E.; Heinitz, S. (American Physical Society, 2016-10-03)
      The energy-dependent cross section of the 7Be(n,α)4He reaction, of interest for the so-called cosmological lithium problem in big bang nucleosynthesis, has been measured for the first time from 10 meV to 10 keV neutron ...
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      A dispersive optical model potential for nucleon induced reactions on 238 U and 232 Th nuclei with full coupling  [Article]

      Quesada Molina, José Manuel; Soukhovitskii, Efrem S.; Capote, Roberto; Chiba, Satoshi (EDP sciences, 2013)
      A dispersive coupled-channel optical model potential (DCCOMP) that couples the ground-state rotational and low-lying vibrational bands of 238U and 232Th nuclei is studied. The derived DCCOMP couples almost all excited ...
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      A general numerical solution of dispersion relations for the nuclear optical model  [Article]

      Capote, Roberto; Molina, Roberto; Quesada Molina, José Manuel (IOP Publishing, 2001-07-16)
      A general numerical solution of the dispersion integral relation between the real and the imaginary parts of the nuclear optical potential is presented. Fast convergence is achieved by means of the Gauss-Legendre integration ...
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      A Lane consistent optical model potential for nucleon scattering on actinide nuclei with extended coupling  [Article]

      Quesada Molina, José Manuel; Capote, Roberto; Soukhovitskii, Efrem S.; Chiba, Satoshi (EDP sciences, 2016)
      An extension for odd-A actinides of a previously derived dispersive coupledchannel optical model potential (OMP) for 238U and 232Th nuclei is presented. It is used to fit simultaneously all the available experimental ...
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      A phenomenological imaginary part of the optical potential for heavy ions  [Article]

      Quesada Molina, José Manuel; Lozano Leyva, Manuel Luis; Madurga Lacalle, Gonzalo (Elsevier, 1983)
      The depth of the imaginary part of the optical potential is derived from the assumption that, at a given energy and for each partial wave L, it is proportional to the compound nucleus density level up to a given excitation ...
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      Analytical expressions for the dispersive contributions to the nucleon-nucleus optical potential  [Article]

      Quesada Molina, José Manuel; Capote, Roberto; Molina, A.; Lozano Leyva, Manuel Luis (American Physical Society, 2003-06-01)
      Analytical solutions of dispersion relations in the nucleon-nucleus optical model have been found for both volume and surface potentials. For the energy dependence a standard Brown-Rho function has been assumed for both ...
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      Angular distribution in the neutron-induced fission of actinides  [Article]

      Paradela, Carlos; Durán, Ignacio; Cortés Giraldo, Miguel Antonio; Praena Rodríguez, Javier; Massimi, Cristian; Quesada Molina, José Manuel; Rubbia, Carlo (EDP Sciences, 2013)
      Above 1 MeV 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 ...
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      Angular distributions of protons scattered by 40 Ar nuclei with excitation of the 2 + (1.46 MeV) and 3 − (3.68 MeV) collective levels for incident energies of 25.1, 32.5, and 40.7 MeV  [Article]

      Okumuşoǧlu, N. T.; Korkmaz Gorur, F.; Birchall, J.; Soukhovitskii, Efrem S.; Capote, Roberto; Quesada Molina, José Manuel; Chiba, Satoshi (The American Physical Society, 2007)
      Elastic and inelastic scattering of unpolarized and polarized protons by 40Ar nuclei for incident energies between 20 and 50 MeV has been studied by reanalyzing experimental scattering spectra for the 2+(1.46 MeV) and ...
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      Application of Photon Strength Functions to (n,g ) measurements with the n_TOF TAC  [Presentation]

      Guerrero, Carlos; Abbondanno, U.; Aerts, G.; Calviño Tavares, Francisco; Capote Fuente, Raúl; Lozano Leyva, Manuel Luis; Quesada Molina, José Manuel (Proceedings of Science, 2017-06)
      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 ...
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      Approximate Lane consistency of the dispersive coupled-channels potential for actinides  [Article]

      Quesada Molina, José Manuel; Capote, Roberto; Soukhovitskii, Efrem S.; Chiba, Satoshi (The American Physical Society, 2007)
      A previously derived dispersive coupled-channels optical model potential for nucleon scattering on 232Th and 238U nuclei [Capote, Soukhovitskii, Quesade, and Chiba, Phys. Rev. C 72, 064610 (2005)] has been tested against ...
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      Astrophysics at n-TOF facility  [Presentation]

      Tagliente, G.; Abbondanno, U.; Aerts, G.; Capote Noy, Roberto; Lozano Leyva, Manuel Luis; Praena Rodríguez, Javier; Quesada Molina, José Manuel; Salgado, J.; Santos, Cayetano; Vaz, P.; Wisshak, Klaus (American Institute of Physics, 2010)
      Heavy elements with Z ≥ 30 are made by neutron capture reactions during stellar He burning and presumably in supernovae. This contribution deals mainly with the slow neutron capture (s) process which is responsible for ...
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      Current quests in nucleosynthesis: present and future neutron-induced reaction measurements  [Article]

      Praena Rodríguez, Javier; Pignatari, M.; Martín-Hernández, G.; Quesada Molina, José Manuel; Sabaté Gilarte, Marta (EDP sciences, 2014)
      We present some open questions in nucleosynthesis focused on the measurement of relevant neutron capture cross-sections and on new experimental methods. We review the recent 63Ni(n,γ) experiment carried out at the n_TOF ...
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      Desarrollos y aplicaciones de GEANT4 para radioterapia y microdosimetría en detectores y circuitos integrados  [PhD Thesis]

      Cortés Giraldo, Miguel Antonio (2011)
      El objetivo general de este proyecto es abrir nuevas líneas de investigación en el Departamento de Física Atómica, Molecular y Nuclear de la Universidad de Sevilla, relacionadas con el estudio del transporte de radiación ...
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      Description of analyzing power and (p,n) reaction by a global dispersive coupled-channel optical model potential  [Presentation]

      Sun, W. L.; Hao, L. J.; Soukhovitskii, E. Sh.; Capote, R.; Quesada Molina, José Manuel (AIP Publishing, 2010)
      A global dispersive coupled-channel optical model potential is used to analyze the proton elastic/inelastic analyzing power data and (p,n) data in order to investigate the prediction power of this potential. The numerical ...