Symmetry energy and neutron pressure of finite nuclei using the relativistic mean-field formalism

Biswal, Nibedita and Sheikh, M. K. Abu El and Behera, Deepanjali and Biswal, Subrat Kumar and Patra, Suresh Kumar and Yusof, Norhasliza and Abu Kassim, Hassan and Carlson, Brett Vern and Bhuyan, Mrutunjaya (2021) Symmetry energy and neutron pressure of finite nuclei using the relativistic mean-field formalism. Astronomische Nachrichten, 342 (1-2, S). pp. 462-468. ISSN 0004-6337, DOI

Full text not available from this repository.


The present study investigates the isospin and Z-dependency of the effective symmetry energy and its co-efficient, namely, neutron pressure for the isotonic chain of neutron magic N = 40, and 82. The relativistic mean-field model with the non-linear NL3* parameter and Relativistic-Hartree-Bogoliubov approach with density-dependent DD-ME2 parameter sets are used for the analysis. The coherent density fluctuation model and Liquid-Drop-Approximation are adopted to formulate the nuclear matter observables such as symmetry energy, neutron pressure of finite nuclei at local density. We found a notable sign of the shell/sub-shell closure following the proton magic over the isotonic chain. Further, a comparative analysis shows that the coherent density fluctuation model is a better approximation to include the surface effect of finite nuclei as compared to the Liquid-Drop-Approximation, which plays a significant role to determine the shell/sub-shell closure over an isotopic and/or isotonic chain.

Item Type: Article
Funders: Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ), Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) (2017/05660-0), FOSTECT (FOSTECT.2019B.04)
Uncontrolled Keywords: Relativistic mean-field model; Relativistic-Hartree-Bogoliubov approach; Coherent density fluctuation model; Local density approximation; Symmetry energy; Neutron pressure; Infinite nuclear matter; Shell/sub-shell closure
Subjects: Q Science > QB Astronomy
Divisions: Faculty of Science > Department of Physics
Depositing User: Ms Zaharah Ramly
Date Deposited: 01 Sep 2022 06:50
Last Modified: 01 Sep 2022 06:50

Actions (login required)

View Item View Item