The proton emission in neutron deficient nuclei with [Formula: see text] has been investigated within the framework of axially deformed relativistic mean field (RMF) theory using NL3 and density-dependent DD-ME1 and DD-ME2 parameters. The quasi-bound states from which the proton emission is probable are determined. The RMF densities are folded with the M3Y effective nucleon–nucleon interaction to obtain the nuclear potential. The total interaction potential consisting of nuclear, Coulomb and centrifugal potentials is used to calculate the proton decay half-lives using the Wentzel–Kramers–Brillouin (WKB) approximation. For this, we have used the [Formula: see text], [Formula: see text] being the single-particle energy of the decaying proton near the Fermi surface. The calculated proton decay half-lives for different nuclei are in consonance with experimental data.
An extensive study on the search of stable isotopes for Z = 119 and 121 superheavy nuclei is performed within relativistic mean field model with NL3 force for axially deformed nuclei. Our search is accomplished in the mass region, 289 ≤ A ≤ 339. The ground state properties such as binding energy, quadrupole deformation, root-mean square radius etc are calculated and compared with finite range droplet model (FRDM). Calculated results are found to be in good agreement with FRDM results. The stability of superheavy isotopes against all the elementary decay modes (α-decay, β-decay and spontaneous fission) are studied. The most stable isotopes are chosen by scrutinizing their various nuclear properties. For Z = 119, the stable isotopes are found to be 291,292119, 294-298119 and for Z = 121, only isotope 297121 found to be relatively more stable in their considered isotopic chain. The predicted stable isotopes in the superheavy region along their isotopic chain, are found near the proton drip line. Further, the single particle spectrum and deform density profile along different direction are shown for few predicted stable isotopes, to gather a sound knowledge on the their features.
We study the properties of proton rich nuclei reported as proton emitters in the region from I to Bi with Z = 53 to 83 and N = 56 to 102 as a crucial application to the existence of exotic nuclei. The effective relativistic mean-field formalism (E-RMF), with NL3, FSUGarnet, G3 and IOPB-I interactions, is adopted for analysis of the ground state properties of proton emitters. Furthermore, in the E-RMF background, the Wentzel-Karmers-Brillouin (WKB) barrier penetration method is used for the calculation of proton emission half-lives. It is found that the calculated half-lives are in good agreement with the experimental results for all emitters considered in this study.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.