A systematic study of α-decay in superheavy nuclei using a Hartree-Fock-Bogoliubov model

•A Hartree-Fock-Bogoliubov model was used to calculate the binding energies.•The effect of different Skyrme forces on decay lifetimes was explored.•Predictions on different modes of decay of superheavy nuclei were done.•New long-lived superheavy nuclei were proposed. Predictions on the alpha decay a...

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Bibliographic Details
Published in:Chinese journal of physics (Taipei) 2020-08, Vol.66, p.703-714
Main Authors: Seyyedi, S.A., Amiri, Gh
Format: Article
Language:English
Subjects:
Hartee-Fock-Bogoliubov model
Superheavy nuclei
α-decay
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Summary:•A Hartree-Fock-Bogoliubov model was used to calculate the binding energies.•The effect of different Skyrme forces on decay lifetimes was explored.•Predictions on different modes of decay of superheavy nuclei were done.•New long-lived superheavy nuclei were proposed. Predictions on the alpha decay and spontaneous fission of the superheavy nuclei in the range of Z = 106–118 have been systematically done within the Hartree-Fock-Bogoliubov model and different Skyrme type interactions. A comparison of the results of the current study with experimental values showed good agreement. This study was extended to unknown isotopes in the range of Z = 116–118. The calculated alpha decay half-lives are in the range of 10−5 to 102 s which lie within measurable values. To identify the long-lived isotopes in the mass region, spontaneous fission half-lives were performed using a semi-empirical formula. The results revealed that the isotopes 276,275,274,272,268110, 276,275,273111, 282,280,279112, 281,280,279113, 284,283114, 286115, 289116, 296,295,292,291117, 297,296118, and 295,293,292118 survived fission and had alpha decay mode as the predominant mode of decay which could be synthesized in the laboratory.
ISSN:0577-9073
DOI:10.1016/j.cjph.2020.06.016