Now showing items 1-20 of 30

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      11Li Breakup on 208Pb at Energies Around the Coulomb Barrier  [Article]

      Fernández García, Juan Pablo; Rodríguez Gallardo, Manuela; González Álvarez, Marcos Aurelio; Mukha, I.; Moro Muñoz, Antonio Matías; Lay Valera, José Antonio; Gómez Camacho, Joaquín José; Cubero, M. (American Physical Society, 2013-04-05)
      The inclusive breakup for the 11Li+208Pb reaction at energies around the Coulomb barrier has been measured for the first time. A sizable yield of 9Li following the 11Li dissociation has been observed, even at energies well ...
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      11Li structural information from inclusive break-up measurements  [Article]

      Fernández García, Juan Pablo; Cubero, M.; Acosta, Luis; Alcorta, Martín; González Álvarez, Marcos Aurelio; Borge, María José G.; Gómez Camacho, Joaquín José; Lay Valera, José Antonio; Martel Bravo, Ismael; Moro Muñoz, Antonio Matías; Rodríguez Gallardo, Manuela; Sánchez Benítez, A. M. (EDP Sciences, 2015)
      Structure information of 11Li halo nucleus has been obtained from the inclusive break-up measurements of the 11Li+208Pb reactions at energies around the Coulomb barrier (Elab = 24.3 and 29.8 MeV). The effective break-up ...
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      Be-7- and B-8-reaction dynamics at Coulomb barrier energies  [Article]

      Lay Valera, José Antonio; Mazzocco, M.; Acosta, Luis; Fernández García, Juan Pablo; Martel, I.; Boiano, A.; Boiano, C.; Manea, C.; Sánchez Benítez, A. M.; Marquínez Durán, G. (EDP Sciences, 2016)
      We investigated the reaction dynamics induced by the Radioactive Ion Beams Be-7 and B-8 on a Pb-208 target at energies around the Coulomb barrier. The two measurements are strongly interconnected, being Be-7 (S-alpha = ...
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      Continuum discretised BCS approach for weakly bound nuclei  [Article]

      Alonso Alonso, Clara Eugenia; Fortunato, Lorenzo; Vitturi, Andrea; Lay Valera, José Antonio (IOP Publishing, 2016)
      The Bardeen-Cooper-Schrieffer (BCS) formalism is extended by including the single-particle continuum in order to analyse the evolution of pairing in an isotopic chain from stability up to the drip line. We propose a continuum ...
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      Continuum-discretized coupled-channels calculations with core excitation  [Article]

      Diego Martínez, Raúl de; Arias Carrasco, José Miguel; Lay Valera, José Antonio; Moro Muñoz, Antonio Matías (American Physical Society, 2014)
      The effect of core excitation in the elastic scattering and breakup of a two-body halo nucleus on a stable target nucleus is studied. The structure of the weakly bound projectile is described in the weak-coupling limit, ...
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      Core excitation effects in halo nuclei using a transformed oscillator basis  [Presentation]

      Lay Valera, José Antonio; Arias Carrasco, José Miguel; Gómez Camacho, Joaquín José; Moro Muñoz, Antonio Matías (American Institute of Physics, 2012)
      A recent generalization of the Transformed Harmonic Oscillator basis, intended to consider core excitations in the structure of one nucleon halo nuclei, is applied to the break up of 11Be. The reaction studied is 11Be+208Pb ...
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      Core excitation effects in the breakup of halo nuclei  [Presentation]

      Moro Muñoz, Antonio Matías; Diego, Raúl de; Lay Valera, José Antonio; Crespo, R.; Johnson, Ron C.; Arias Carrasco, José Miguel; Gómez Camacho, Joaquín José (American Institute of Physics, 2012)
      The role of core excitation in the structure and dynamics of two-body halo nuclei is investigated. We present calculations for the resonant breakup of 11Be on protons at an incident energy of 63.7 MeV/nucleon, where core ...
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      Core excitations in the structure and reactions of halo nuclei  [Article]

      Lay Valera, José Antonio; Moro Muñoz, Antonio Matías; Arias Carrasco, José Miguel; Gómez Camacho, Joaquín José (EDP Sciences, 2014-03-20)
      We analyse the resonant break-up of halo nuclei including possible excitations of the core both in the structure of the halo nucleus and in the reaction dynamics. The structure of the halo nucleus is treated in the ...
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      Descripción de la estructura y reacciones de núcleos exóticos en una base de oscilador armónico transformado  [PhD Thesis]

      Lay Valera, José Antonio (2012)
      La estructura del presente trabajo queda como sigue. En la sección 1.1 se exponen los modelos que se utilizaran para la comprensión de la estructura de los n&uacu ... En el capítulo 2 se aplicará lo expuesto en la sección ...
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      DHalo nuclei follow rutherford elastic scattering at energies below the barrier? the case of 11Li  [Article]

      Fernández García, Juan Pablo; Rodríguez Gallardo, Manuela; González Álvarez, Marcos Aurelio; Moro Muñoz, Antonio Matías; Lay Valera, José Antonio; Cubero, M.; Acosta, Luis; Alcorta, Martín (American Physical Society, 2012-12-26)
      The first measurement of the elastic scattering of the halo nucleus 11Li and its core 9Li on 208Pb at energies near the Coulomb barrier is presented. The 11Li+208Pb elastic scattering shows a strong reduction with respect ...
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      Double charge-exchange reactions and the effect of transfer  [Article]

      Lay Valera, José Antonio; Burrello, S.; Bellone, J. I.; Colonna, M.; Lenske, H. (IOP Science, 2018)
      There is a recently renewed interest on the study of single and double charge exchange reactions with heavy ions. We report here a preliminary theoretical study of double charge exchange reactions in terms of two successive ...
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      Dynamic studies of 11Li and its core 9Li on 208Pb near the Coulomb barrier  [Presentation]

      Cubero, M; Borge, M. J. G.; Acosta, Luis; Alcorta, Martín; González Álvarez, Marcos Aurelio; Diget, C.; Galaviz, D.; Fernández García, Juan Pablo; Gómez Camacho, Joaquín José; Lay Valera, José Antonio; Madurga, Miguel; Moro Muñoz, Antonio Matías; Mukha, I. (American Institute of Physics, 2010)
      We measured the scattering of the halo nucleus 11Li and its core 9Li on the lead target at TRIUMF at energies below and around to the Coulomb barrier. We report here on our preliminary analysis of the inclusive breakup reaction.
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      Elastic scattering of 9Li on 208Pb at energies around the Coulomb barrier  [Presentation]

      Cubero, M.; Fernández García, Juan Pablo; Lay Valera, José Antonio; Acosta, Luis; Alcorta, Martín; González Álvarez, Marcos Aurelio; Borge, M. J. G.; Buchmann, L.; Diget, C. A.; Fulton, B.; Gómez Camacho, Joaquín José; Moro Muñoz, Antonio Matías (American Institute of Physics, 2011)
      We have studied the dynamical effects of the halo structure of 11Li on the scattering on heavy targets at energies around the Coulomb barrier. This experiment was performed at ISAC-II at TRIUMF with a world record in ...
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      Elastic scattering of O-17+Pb-208 at energies near the Coulomb barrier  [Article]

      Lay Valera, José Antonio; Strano, E.; Mazzocco, M.; Molini, P.; Soramel, F.; Vitturi, Andrea; Boiano, A.; Boiano, C.; Torresi, D.; Manea, C. (EDP Sciences, 2016)
      Within the frame of the commissioning of a new experimental apparatus EXPADES we undertook the measurement of the elastic scattering angular distribution for the system O-17+Pb-208 at energy around the Coulomb barrier. The ...
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      Evidence of strong dynamic core excitation in 19C resonant break-up  [Article]

      Lay Valera, José Antonio; Diego Martínez, Raúl de; Crespo, Raquel; Moro Muñoz, Antonio Matías; Arias Carrasco, José Miguel; Johnson, R. C. (American Physical Society, 2016)
      The resonant breakup of 19C on protons measured at RIKEN [Y. Satou et al., Phys. Lett. B 660, 320 (2008)] is analyzed in terms of a valence-core model for 19C that includes possible core excitations. The analysis of ...
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      Exploring continuum structures with a pseudo-state basis  [Article]

      Lay Valera, José Antonio; Moro Muñoz, Antonio Matías; Arias Carrasco, José Miguel; Gómez Camacho, Joaquín José (The American Physical Society, 2010)
      The ability of a recently developed square-integrable discrete basis to represent the properties of the continuum of a two-body system is investigated. The basis is obtained performing a simple analytic local scale ...
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      Importance of the single-particle continuum in BCS pairing with a pseudostate basis  [Article]

      Lay Valera, José Antonio; Alonso Alonso, Clara Eugenia; Fortunato, Lorenzo; Vitturi, Andrea (EDP Sciences, 2016)
      In a recent work [arXiv:1510.03185] the use of the Transformed Harmonic Oscillator (THO) basis for the discretization of the singleparticle continuum into a Generalized Bardeen-Cooper-Schrieffer (BCS) formalism was proposed ...
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      Interplay between valence and core excitation mechanisms in the breakup of halo nuclei  [Article]

      Moro Muñoz, Antonio Matías; Lay Valera, José Antonio (American Physical Review, 2012-12-05)
      The phenomenon of core excitation in the breakup of a two-body halo nucleus is investigated. We show that this effect plays a significant role in the reaction dynamics and, furthermore, its interference with the valence ...
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      Núcleos halo: un estudio semianalítico  [Final Degree Work]

      Reina Ramírez, Ángel (2018-06)
      El presente trabajo se centra en el estudio de núcleos exóticos ligeros, en concreto, en algunos núcleos denominados núcleos halo. En el caso de los núcleos estables ligeros, éstos se caracterizan por tener un número ...
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      Particle motion in a deformed potential using a transformed oscillator basis  [Article]

      Lay Valera, José Antonio; Moro Muñoz, Antonio Matías; Arias Carrasco, José Miguel; Gómez Camacho, Joaquín José (American Physical Society, 2012)
      The quantum description of a particle moving in a deformed potential is investigated. A pseudostate (PS) basis is used to represent the states of the composite system. This PS basis is obtained by diagonalizing the system ...