Now showing items 1-20 of 45

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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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      7 Li ( p , n ) 7 Be cross section from threshold to 1960 keV and precise measurement of the 197 Au ( n , γ ) spectrum-averaged cross section at 30 keV  [Article]

      Martín Hernández, Guido; Mastinu, Pierfrancesco; Musacchio González, Elizabeth; Capote, Roberto; Lubián, Hector; Macías Martínez, Miguel (American Physical Society, 2019)
      Background: The 7 Li(p, n) 7 Be reaction is one of the most used nuclear reaction for accelerator-based neutron sources. There are few experimental cross section data in the double-value energy region and they are ...
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      96 Zr(n,γ) measurement at the n_TOF facility at CERN  [Article]

      Tagliente, G.; Milazzo, Paolo; Fujii, K.; Abbondanno, U.; Aerts, G.; Álvarez, H.; Wisshak, K.; Capote, Roberto; Quesada Moreno, José Francisco (American Physical Society, 2011)
      The (n,γ) cross section of 96Zr has been investigated at the CERN n-TOF spallation neutron source. High-resolution time-of-flight measurements using an enriched ZrO2 sample allowed us to analyze 15 resonances below 40 keV ...
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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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      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 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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      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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      Discontinuities in the level density of small quantum dots under strong magnetic fields  [Article]

      González, Augusto; Capote, Roberto (American Physical Society, 2002)
      Exact diagonalization studies of the level density in a six-electron quantum dot under magnetic fields around 7 T ("filling factor" around 1/2) are reported. In any spin-polarization channel, two regimes are visible in the ...
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      Dispersive coupled-channel analysis of nucleon scattering from 232 Th up to 200 MeV  [Article]

      Soukhovitskii, Efrem S.; Capote, Roberto; Quesada Molina, José Manuel; Chiba, Satoshi (American Physical Society, 2005-08-01)
      An isospin-dependent coupled-channels optical model potential containing a dispersive term (including nonlocal contribution) is used to simultaneously fit the available experimental database (including strength functions ...
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      Dispersive coupled-channels optical-model potential with soft-rotator couplings for Cr, Fe, and Ni isotopes  [Article]

      Li, Rui; Sun, Weili; Soukhovitskii, Efrem S.; Quesada Molina, José Manuel; Capote, Roberto (American Physical Society, 2013)
      An approximate Lane-consistent dispersive coupled-channels optical potential is derived that describes nucleon-induced reactions on even iron isotopes. Realistic saturated couplings for 54,56,58Fe nuclei are built using ...
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      Dispersive spherical optical model of neutron scattering from 27 Al up to 250 MeV  [Article]

      Molina, A.; Capote, Roberto; Quesada Molina, José Manuel; Lozano Leyva, Manuel Luis (American Physical Society, 2002-03-01)
      A spherical optical model potential (OMP) containing a dispersive term is used to fit the available experimental database of s(u) and sT for n127Al covering the energy range 0.1–250 MeV using relativistickinematics ...
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      Experimental study of the 91Zr(n, γ) reaction up to 26 keV  [Article]

      Tagliente, G.; Milazzo, Paolo; Fujii, K.; Aerts, G.; Abbondanno, U.; Álvarez, H.; Wisshak, K.; Capote, Roberto; Lozano Leyva, Manuel Luis; Quesada Molina, José Manuel (The American Physical Society, 2008)
      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 ...
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      High accuracy 235 U(n,f) data in the resonance energy region  [Article]

      Paradela, Carlos; Duran, I.; Le Naour, C.; Capote, Roberto; Guerrero Sánchez, Carlos (EDP sciences, 2016)
      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 ...
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      High-accuracy U233 (n,f) cross-section measurement at the white-neutron source n_TOF from near-thermal to 1 MeV neutron energy  [Article]

      Calviani, M.; Praena Rodríguez, Javier; Abbondanno, U.; Aerts, G.; Álvarez, H.; Álvarez Velarde, F.; Capote, Roberto; Lozano Leyva, Manuel Luis; Quesada Molina, José Manuel; Wisshak, K. (The American Physical Society, 2009)
      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. The ...
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      Is a global coupled-channel dispersive optical model potential for actinides feasible?  [Article]

      Capote, Roberto; Soukhovitskii, Efrem S.; Quesada Molina, José Manuel; Chiba, Satoshi (American Physical Society, 2005-12-01)
      An isospin-dependent coupled-channel optical model potential containing a dispersive term with a nonlocal contribution is used to simultaneously fit the available experimental database (including strength functions and ...
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      Level densities of transitional Sm nuclei  [Article]

      Capote, Roberto; Ventura, A.; Cannata, F.; Quesada Molina, José Manuel (American Physical Society, 2005-06-01)
      Experimentally determined level densities of the transitional isotopes 148, 149, 150, 152Sm at excitation energies below and around the neutron binding energy are compared with microcanonical calculations based on a Monte ...