Analysis of Nuclear Structure Properties and Stellar β-decay Rates of Even–Even 106–120Zr Isotopes
Year: 2024
Type: article
Abstract: The nuclear ground state properties of even–even 106–120Zr nuclei have been investigated within the framework of the relativistic mean field (RMF) approach. The RMF model with density-dependent DDME2 and DDPC1 interactions is utilized for the calculation of potential energy curves, the nuclear ground-state deformation parameters (β 2), neutron separation energies (S n and S 2n ) and neutron skin thickness (r np ) of selected Zr isotopes. Later, the β-decay properties of Zr isotopes were studied using the proton-neutron quasi-particle random phase approximation (pn-QRPA) model. These include Gamow–Teller strength distributions, β-decay half-lives and stellar electron emission/positron capture rates. The β 2 values computed from the RMF model were employed in the pn-QRPA model as an input parameter for the calculations of β-decay properties for even–even 106–120Zr nuclei. The stellar rates were computed using the pn-QRPA framework with three different types of deformation parameters. Only at high temperature (T 9 ≥ 2) and low density (ρ Y e ≤ 107 g cm−3) values, the sum of electron emission and positron capture rates has a sizeable contribution (with positive exponents) to the stellar rates.
Institutions: Institute of Space Technology, University of Wah, Taif University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
Funder: Taif University
Award: G4742089874
OpenAlex ID: W4404780020