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Half-lives of ${\ensuremath{\beta}}^{+}$ decay and electron capture are studied in some selected superheavy nuclei produced in hot-fusion reactions, namely, $^{290}\mathrm{Fl}$, $^{293}\mathrm{Mc}$, $^{294}\mathrm{Lv}$, and $^{295}\mathrm{Ts}$. The nuclear structure is described microscopically… Click to show full abstract
Half-lives of ${\ensuremath{\beta}}^{+}$ decay and electron capture are studied in some selected superheavy nuclei produced in hot-fusion reactions, namely, $^{290}\mathrm{Fl}$, $^{293}\mathrm{Mc}$, $^{294}\mathrm{Lv}$, and $^{295}\mathrm{Ts}$. The nuclear structure is described microscopically from deformed self-consistent Skyrme Hartree-Fock mean-field calculations that include pairing correlations. The sensitivity of the half-lives to deformation and to the ${Q}_{\mathrm{EC}}$ energies, which are still not determined experimentally, are studied. The results are compared with phenomenological $\ensuremath{\alpha}$-decay half-lives, showing that the latter decay mode is dominant in this mass region.
Journal Title: Physical Review C
Year Published: 2019
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