Microscopic calculations of weak decays in superheavy nuclei

Abstract

Half-lives of beta+ decay and electron capture are studied in some selected superheavy nuclei produced in hot fusion reactions, namely, 290Fl, 293Mc, 294Lv, and 295Ts. 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 QEC energies, which are still not determined experimentally, are studied. The results are compared with phenomenological alpha-decay half-lives, showing that the latter decay mode is dominant in this mass region.

arXiv comment12 pages, 11 figures

References in corpus (36)

• Nuclear Ground-State Masses and Deformations
• Nuclear ground-state masses and deformations: FRDM(2012)
• Relativistic Continuum Hartree Bogoliubov Theory for Ground State Properties of Exotic Nuclei
• Microscopic mass formulae
• Further explorations of Skyrme-Hartree-Fock-Bogoliubov mass formulas. XII: Stiffness and stability of neutron-star matter
• Superheavy nuclei in selfconsistent nuclear calculations
• Systematic study of deformed nuclei at the drip lines and beyond
• Shell Corrections of Superheavy Nuclei in Self-Consistent Calculations
• Axially Deformed Solution of the Skyrme-Hartree-Fock-Bogolyubov Equations using The Transformed Harmonic Oscillator Basis. The program HFBTHO (v1.66p)
• Shell stabilization of super- and hyperheavy nuclei without magic gaps
• Microscopic justification of the Equal Filling approximation
• One-quasiparticle States in the Nuclear Energy Density Functional Theory
• Deformation of the N=Z nucleus 76Sr using beta-decay studies
• Shapes and beta decay in proton rich Ge, Se, Kr and Sr isotopes
• Quadrupole deformations of neutron-drip-line nuclei studied within the Skyrme Hartree-Fock-Bogolyubov approach
• Beta decay and shape isomerism in 74Kr
• Spin-isospin excitations and beta+/EC half-lives of medium-mass deformed nuclei
• Collectivity-induced quenching of signatures for shell closures
• Beta-decay in odd-A and even-even proton-rich Kr isotopes
• Properties of nuclei in the nobelium region studied within the covariant, Skyrme, and Gogny energy density functionals
• Beta-decay properties of Zr and Mo neutron-rich isotopes
• New Discrete Basis for Nuclear Structure Studies
• Beta-decay properties of neutron-rich Ge, Se, Kr, Sr, Ru, and Pd isotopes from deformed quasiparticle random-phase approximation
• Stellar electron-capture rates in pf-shell nuclei from quasiparticle random-phase approximation calculations
• Gamow-Teller response in deformed even and odd neutron-rich Zr and Mo isotopes
• Stellar weak decay rates in neutron-deficient medium-mass nuclei
• Shape mixing and beta-decay properties of neutron-deficient Kr and Sr isotopes
• Gamow-Teller strength distributions in Fe and Ni stable isotopes
• Half-lives of rp-process waiting point nuclei
• Weak interaction rates for Kr and Sr waiting-point nuclei under rp-process conditions
• Effects of deformation on the beta-decay patterns of light even-even and odd-mass Hg and Pt isotopes
• beta-decay in neutron-deficient Hg, Pb, and Po isotopes
• Nuclear shape dependence of Gamow-Teller distributions in neutron-deficient Pb isotopes
• Contribution of excited states to stellar weak-interaction rates in odd-A nuclei
• Beta-decay properties of neutron-rich rare-earth isotopes
• Beta-decay properties of neutron-rich Ca, Ti, and Cr isotopes

Cited by in corpus (6)

• Study of Decay Modes in Transfermium Isotopes
• Structural Properties and $\alpha$-Decay Chains of Transfermium Nuclei (101$\le$Z$\le$110)
• Shell structure and shape transition in odd-$Z$ superheavy nuclei with proton numbers $Z=117,119$: insights from deformed relativistic Hartree-Bogoliubov in continuum
• Self-consistent calculations of electron-capture decays in Z=118, 119, and 120 superheavy isotopes
• Competition between weak and alpha-decay modes in superheavy nuclei
• Decay properties of undetected superheavy nuclei with Z>110