Nuclear matter properties of finite nuclei using relativistic mean field formalism

Author(s)

Biswal, S. K. ^[1] ; Abu El Sheikh, M. K. ^[2] ; Biswal, N. ^[3] ; Yusof, N. ^[2] ; Kassim, H. A. ^[2] ; Patra, S. K. ^[4] ; Bhuyan, M. ^{[2, 5, 6]}

Affiliation

^[1] Xiamen Univ, Dept Astron, Xiamen 361005 - Peoples R China

^[2] Univ Malaya, Fac Sci, Dept Phys, Kuala Lumpur 50603 - Malaysia

^[3] North Odisha Univ, Dept Phys, Sri Ram Chandra Vihar 757003 - India

^[4] Inst Phys, Sachivalaya Marg, Bhubaneswar 751005 - India

^[5] Ton Duc Thang Univ, Fac Appl Sci, Ho Chi Minh City - Vietnam

^[6] Ton Duc Thang Univ, Adv Inst Mat Sci, Atom Mol & Opt Res Grp, Ho Chi Minh City - Vietnam

• Document type: Journal article
• Source: Nuclear Physics A; v. 1004, DEC 2020.
• Web of Science Citations: 0

Abstract

In this theoretical study, we establish a correlation between the neutron skin thickness and the nuclear symmetry energy for the even-even isotones for magic neutron N = 20, 40, 82, and 126 within self -consistent relativistic mean-field formalism for non-linear NL3{*} and density-dependent DD-ME2 parameter sets. The local density approximation is used to formulate the symmetry energy, and its co-efficient, namely, neutron pressure of finite nuclei over the isotonic chains. We find a few moderate signatures of pick and/or depth over the isotonic chains at and/or near the proton magic for symmetry energy and neutron pressure, which is a manifestation of the persistence of shell/sub-shell closure. We determine the symmetry energy for the isotonic chain of expected neutron shell closures N = 172 and also find similar behavior as in the case of known magic neutrons. Furthermore, we show the symmetry energy as a function of neutron-proton asymmetry, which results in similar behavior as persisted in the mass-dependence curve. In addition to these, a comparative study is performed using Coherent-Density-Fluctuation-Model to examine the surface effect over the isotonic chain in terms of nuclear matter quantities at local density. The obtained results are of considerable importance since due to shell closure over the isotonic chain, will act as awaiting point in nu-cleosynthesis of r-process and experimental investigations towards the drip-line region of the nuclear chart. (c) 2020 Elsevier B.V. All rights reserved. (AU)

• FAPESP's process: 17/05660-0 - Theoretical studies of the structure and reactions of exotic nuclei and many-body systems
• Grantee: Brett Vern Carlson
• Support Opportunities: Research Projects - Thematic Grants