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α-decay Chains of Superheavy Nuclei Nh Using a Finite-Range NN Interaction

  • Nuclear Physics
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Abstract

The α-decay half-lives of nihonium, 279 − 284Nh, isotopes and their α-decay products are studied by employing the density-dependent cluster model. The Wentzel-Kramers-Brillouin semiclassical approximation including the Bohr-Sommerfeld quantization condition is adopted in the evaluation of the α-decay widths. The double-folding α-daughter potential was determined using the effective M3Y-Paris nucleon-nucleon (NN) interaction. Both spherical and deformed shapes for the daughter nuclei are considered with the zero-range exchange contribution of the NN interaction. Investigations of the effects of nonlocality on α-decay half-lives have been studied through the finite-range exchange part of the NN interaction. We found that the inclusion of the finite-range exchange part decreases α-decay half-lives as compared with those values using the zero-range calculations. The inclusion of deformation degrees of freedom in the daughter nuclei reduces the α-decay half-lives as compared with spherical shape. The calculated α-decay half-lives are compared with other theoretical models and they are in good agreement. The competition between α-decay and spontaneous fission is studied and the possible decay modes are presented for unknown nuclei.

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Funding

This study was financially supported by the deanship of scientific research, Majmaah University, Saudi Arabia under Project No. 86/38.

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Authors and Affiliations

  1. Physics Department, Faculty of Science, Cairo University, Giza, Egypt

    A. Adel

  2. Department of Physics, College of Science in Zulfi, Majmaah University, Majmaah, 11932, Saudi Arabia

    A. Adel & T. Alharbi

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  1. A. Adel
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  2. T. Alharbi
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Correspondence to A. Adel.

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Adel, A., Alharbi, T. α-decay Chains of Superheavy Nuclei Nh Using a Finite-Range NN Interaction. Braz J Phys 50, 454–465 (2020). https://doi.org/10.1007/s13538-020-00753-y

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