Artículo
Determining B(E1) distributions of weakly bound nuclei from breakup cross sections using Continuum Discretized Coupled Channels calculations. Application to 11Be
Autor/es | Moro Muñoz, Antonio Matías
Lay Valera, José Antonio Gómez Camacho, Joaquín José |
Departamento | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Fecha de publicación | 2020 |
Fecha de depósito | 2022-01-20 |
Publicado en |
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Premios | Premio Mensual Publicación Científica Destacada de la US. Facultad de Física |
Resumen | A novel method to extract the B(E1) strength of a weakly bound nucleus from experimental Coulomb
dissociation data is proposed. The method makes use of continuum discretized coupled channels (CDCC)
calculations, in which ... A novel method to extract the B(E1) strength of a weakly bound nucleus from experimental Coulomb dissociation data is proposed. The method makes use of continuum discretized coupled channels (CDCC) calculations, in which both nuclear and Coulomb forces are taken into account to all orders. This is a crucial advantage with respect to the standard procedure based on the Equivalent Photon Method (EPM) which does not properly take into account nuclear distortion, higher order coupling effects, or Coulomb- nuclear interference terms. The systematic and statistical uncertainties of this procedure are evaluated. The procedure is applied to the 11Be nucleus using two sets of available experimental data at different energies, for which seemingly incompatible B(E1) have been reported using the EPM. We show that the present procedure gives consistent B(E1) strengths, thus solving the aforementioned long-standing discrepancy between the two measurements. |
Agencias financiadoras | Ministerio de Ciencia, Innovación y Universidades (MICINN). España European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER) European Union (UE) |
Identificador del proyecto | FIS2017-88410-P
RTI2018-098117-B-C21 Horizonte 2020 No. 654002. |
Cita | Moro Muñoz, A.M., Lay Valera, J.A. y Gómez Camacho, J.J. (2020). Determining B(E1) distributions of weakly bound nuclei from breakup cross sections using Continuum Discretized Coupled Channels calculations. Application to 11Be. Physics Letters B, 811, 135959. |
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