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Phenomenological critical interaction distance from elastic scattering measurements on a 208Pb target

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Abstract.

We have surveyed a series of elastic scattering measurements from the literature involving tightly bound (9Li, 10Be, 12C, 16O, 19F), weakly bound (6Li, 7Li, 8Li, 8He, 9Be, 17F), and exotic (6He and 11Li) nuclei on a 208Pb target at energies close to the Coulomb barrier. The corresponding data were then converted and analyzed in terms of the interaction distance, where critical-interaction and strong-absorption distances were extracted. Larger values were obtained for the exotic 6He and 11Li nuclei, as compared with both weakly bound and tightly bound projectiles. The influence of long-range nuclear interactions and Coulomb dipole polarizability are discussed. A correlation between the critical interaction distance and binding energy for a given configuration is observed.

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Authors and Affiliations

  1. Instituto de Física, Universidade de São Paulo, Rua do Matao, 1371, 05508-090, São Paulo, SP, Brazil

    V. Guimarães

  2. Instituto de Física, Universidade Federal Fluminense, Avenida Litoranea s/n, Gragoata, 24210-340, Niteroi, Rio de Janeiro, Brazil

    J. Lubian

  3. Physics Department, University of Notre Dame, 46556-5670, Notre Dame, IN, USA

    J. J. Kolata

  4. Departamento de Aceleradores, Instituto Nacional de Investigaciones Nucleares, Apartado Postal 18-1027, Codigo Postal 11801, México, Distrito Federal, Mexico

    E. F. Aguilera

  5. Departamento de Física, Universidade Federal de São Paulo, Campus Diadema, 09913-030, Diadema, SP, Brazil

    M. Assunção

  6. Universidade Federal Rural do Rio de Janeiro, 23851-970, Rio de Janeiro, Brazil

    V. Morcelle

Authors
  1. V. Guimarães
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  2. J. Lubian
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  3. J. J. Kolata
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  4. E. F. Aguilera
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  5. M. Assunção
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  6. V. Morcelle
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Corresponding author

Correspondence to V. Guimarães.

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Communicated by P. Woods

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Guimarães, V., Lubian, J., Kolata, J.J. et al. Phenomenological critical interaction distance from elastic scattering measurements on a 208Pb target. Eur. Phys. J. A 54, 223 (2018). https://doi.org/10.1140/epja/i2018-12662-7

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  • DOI: https://doi.org/10.1140/epja/i2018-12662-7

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