Particle-vibration coupling effect on the $\beta$-decay of magic nuclei

Abstract

Nuclear $\beta$-decay in magic nuclei is investigated, taking into account the coupling between particle and collective vibrations,on top of self-consistent random phase approximation calculations based on Skyrme density functionals. The low-lying Gamow-Teller strength is shifted downwards and at times becomes fragmented; as a consequence, the $\beta$-decay half-lives are reduced due to the increase of the phase space available for the decay. In some cases, this leads to a very good agreement between theoretical and experimental lifetimes: this happens, in particular, in the case of the Skyrme force SkM*, that can also reproduce the line shape of the high energy Gamow-Teller resonance as it was previously shown.

arXiv comment5 pages, 3 figures

References in corpus (18)

• Nuclear weak-interaction processes in stars
• Where, oh where has the r-process gone?
• Beta decay of r-process waiting-point nuclei in a self-consistent approach
• Half Life of the Doubly-magic r-Process Nucleus 78Ni
• A new Skyrme interaction with improved spin-isospin properties
• $\beta$-decay half-lives of neutron-rich nuclei and matter flow in the $r$-process
• Isospin corrections for superallowed Fermi beta decay in self-consistent relativistic random phase approximation approaches
• Beta Decays of Isotones with Neutron Magic Number of N=126 and R-process Nucleosynthesis
• Shell-model half-lives for the N=82 nuclei and their implications for the r-process
• Beta-decay rates of r-process nuclei in the relativistic quasiparticle random phase approximation
• Calculation of beta-decay rates in a relativistic model with momentum-dependent self-energies
• Impact of tensor force on β-decay of magic and semi-magic nuclei
• The Gamow-Teller response within Skyrme random-phase approximation plus particle-vibration coupling
• Gamow-Teller response and its spreading mechanism in doubly magic nuclei
• Influence of 2p-2h configurations on beta-decay rates
• Benchmarking nuclear models for Gamow-Teller response
• Fragmentation of spin-dipole strength in ${}^{90}$Zr and ${}^{208}$Pb
• Investigating $\beta$-decay properties of spherical nuclei along the possible r-process path

Cited by in corpus (31)

• Large scale evaluation of beta-decay rates of r-process nuclei with the inclusion of first-forbidden transitions
• Beyond-mean-field approaches for nuclear neutrinoless double beta decay in the standard mechanism
• Nuclear response theory for spin-isospin excitations in a relativistic quasiparticle-phonon coupling framework
• Gamow-Teller strength in ${}^{48}$Ca and ${}^{78}$Ni with the charge-exchange subtracted second random-phase approximation
• Isospin splitting of nucleon effective mass from giant resonances in ${}^{208}$Pb
• Beyond mean-field boson-fermion model for odd-mass nuclei
• Quasi-particle random phase approximation with quasi-particle-vibration coupling: application to the Gamow-Teller response of the superfluid nucleus ${}^{120}$Sn
• Toward an accurate strongly-coupled many-body theory within the equation of motion framework
• Coupling charge-exchange vibrations to nucleons in a relativistic framework: effect on Gamow-Teller transitions and beta-decay half-lives
• The mutable nature of particle-core excitations with spin in the one-valence-proton nucleus 133Sb
• Nuclear $\beta$-decay half-lives in the relativistic point-coupling model
• Temperature dependence of nuclear spin-isospin response and beta decay in hot astrophysical environments
• Quasiparticle and $\gamma$-band structures in ${}^{156}$Dy
• Equation of Motion Method to strongly correlated Fermi systems and Extended RPA approaches
• Shape transitions in odd-mass $\gamma$-soft nuclei within the interacting boson-fermion model based on the Gogny energy density functional
• Odd-even shape staggering and kink structure of charge radii of Hg isotopes by the deformed relativistic Hartree-Bogoliubov theory in continuum
• Towards a self-consistent dynamical nuclear model
• Impact of complex many-body correlations on electron capture in thermally excited nuclei around ${}^{78}$Ni
• Impact of the first-forbidden $\beta$ decay on the production of $A\sim 195$ r-process peak
• Description of odd-mass nuclei within the interacting boson-fermion model based on the Gogny energy density functional
• Microscopic response theory for strongly-coupled superfluid fermionic systems
• Particle-vibration coupling for giant resonances beyond the diagonal approximation
• Estimation of 2p2h effect on Gamow-Teller transition with Second Tamm-Dancoff-Approximation
• Learning the structure of giant resonances from their $\gamma$-decay
• Competition between allowed and first-forbidden $\beta$ decay in $r$-process waiting-point nuclei within a relativistic beyond-mean-field approach
• Tensor-force effects on shell-structure evolution in $N=82$ isotones and $Z=50$ isotopes in the relativistic Hartree-Fock theory
• Theory of nuclear collective vibrations
• Simultaneous impacts of nuclear shell structure and collectivity on $\beta$ decay: Evidence from ${}^{80}$Ga${}_{49}$
• Axially Deformed Proton-Neutron Relativistic Quasiparticle Finite Amplitude Method for Charge-Exchange Transitions
• Recent applications of the subtracted second RPA method
• Nuclear response at zero and finite temperature