Exploring the ground state bulk and decay properties of the nuclei in superheavy island

Jain, Nishu and Kumar, Raj and Bhuyan, Mrutunjaya (2022) Exploring the ground state bulk and decay properties of the nuclei in superheavy island. Nuclear Physics A, 1019. ISSN 0375-9474, DOI https://doi.org/10.1016/j.nuclphysa.2021.122379.

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The alpha-decay half-lives of 204 superheavy nuclei covering the range 114 <= Z <= 126 have been investigated using the relativistic mean-field model (RMF) for NL3* parameter set. The ground state bulk properties such as binding energy, quadrupole deformation parameter (beta(2)), and root-mean-square charge radii for these nuclei are analyzed. Four different semi-empirical formulae, namely, the universal decay law (UDL), the Viola-Seaborg (VSS) formula, the modified universal decay law (MUDL), and the modified Brown formula (MBrown), are used to obtain the alpha-decay half-lives for the considered nuclei. To examine the applicability of relativistic mean-field model within NL3* parametrization, the alpha-decay energies, and the half-lives of a few known superheavy nuclei within the range 102 <= Z <= 118 are calculated and the results are compared with the experimental data along with the theoretical predictions. The alpha-decay energies (Q-values) are estimated from the binding energies of the parent, and daughter from the RMF (NL3*) parameter set. The calculated results are compared with macroscopic-microscopic Finite-Range-Droplet Model (FRDM), Global Nuclear Mass Model (WS3, WS4), Weizsacker-Skyrme mass model (WS*) predictions, and the experimental data, wherever available. The possible standard deviations are also estimated for experimental and various theoretical predictions. We find a good consistency for the experimental-to-UDL, FRDM-to-UDL, and WS4-to-UDL estimates of the decay energy and corresponding half-life. The present analysis provides the theoretical predictions within the microscopic model for the upcoming experiments on the superheavy region. (C)& nbsp;2021 Elsevier B.V. All rights reserved.

Item Type: Article
Funders: FOSTECT Project [Grant No: FOSTECT.2019B.04], Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [Grant No: 2017/05660-0], Department of Atomic Energy (DAE) Board of Research in Nuclear Sciences (BRNS) [Grant No: 58/14/12/2019-BRNS]
Uncontrolled Keywords: Relativistic mean field; Alpha decay; Q-value; Half-lives; Analytical formula; Superheavy nuclei
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Department of Physics
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 05 Sep 2023 07:32
Last Modified: 05 Sep 2023 07:32
URI: http://eprints.um.edu.my/id/eprint/43075

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