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Potential of interaction between nuclei and nucleon-density distribution in nuclei

  • Nuclei
  • Theory
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Abstract

Nuclear-interaction potentials that are calculated by using Skyrme forces within the extended Thomas-Fermi approximation and Hartree-Fock-Bardeen-Cooper-Schrieffer theory are studied in detail. It is shown that the nuclear component of the potential simulating the interaction between nuclei grows with increasing number of neutrons in colliding isotopes and with increasing diffuseness parameter of the density distribution in interacting nuclei. An increase in the diffuseness parameter of the density distribution in interacting nuclei leads to a decrease in the height of the barrier between the nuclei and to an increase in the depth of the capture well and in the fusion cross section. It is shown that the diffuseness parameter calculated for the nuclear component of the potential at large distance between interacting nuclei by using Skyrme forces exceeds the diffuseness parameter of the nucleon-density distribution in these nuclei by a factor of about 1.5. Realistic values of the diffuseness parameter of nuclear interaction between medium-mass and heavy nuclei fall within the range a ≈ 0.75–0.90 fm.

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Authors and Affiliations

  1. Institute for Nuclear Research, National Academy of Sciences of Ukraine, pr. Nauki 47, 03680, Kiev, Ukraine

    V. Yu. Denisov & V. A. Nesterov

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  1. V. Yu. Denisov
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  2. V. A. Nesterov
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Original Russian Text © V.Yu. Denisov, V.A. Nesterov, 2006, published in Yadernaya Fizika, 2006, Vol. 69, No. 9, pp. 1507–1519.

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Denisov, V.Y., Nesterov, V.A. Potential of interaction between nuclei and nucleon-density distribution in nuclei. Phys. Atom. Nuclei 69, 1472–1484 (2006). https://doi.org/10.1134/S1063778806090067

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  • DOI: https://doi.org/10.1134/S1063778806090067

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