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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
Biswal, Nibedita [1] ; Sheikh, M. K. Abu El [2] ; Behera, Deepanjali [3] ; Biswal, Subrat Kumar [4] ; Patra, Suresh Kumar [5] ; Yusof, Norhliza [2] ; Abu Kassim, Hassan [2] ; Carlson, Brett Vern [6] ; Bhuyan, Mrutunjaya [2, 7, 8]
Total Authors: 9
Affiliation:
[1] North Odisha Univ, Dept Phys, Baripada 757003, Odisha - India
[2] Univ Malaya, Fac Sci, Dept Phys, Kuala Lumpur 50603 - Malaysia
[3] Sambalpur Univ, Sch Phys, Jyoti Vihar 768019 - India
[4] Xiamen Univ, Dept Astron, Xiamen 361005 - Peoples R China
[5] Sainik Sch, Inst Phys, Sachivalaya Marg, Bhubaneswar 751005 - India
[6] Inst Tecnol Aeronaut, Dept Fis, DCTA, BR-12228900 Sao Jose Dos Campos, SP - Brazil
[7] Ton Duc Thang Univ, Fac Appl Sci, Ho Chi Minh City - Vietnam
[8] Ton Duc Thang Univ, Adv Inst Mat Sci, Atom Mol & Opt Res Grp, Ho Chi Minh City - Vietnam
Total Affiliations: 8
Document type: Journal article
Source: ASTRONOMISCHE NACHRICHTEN; v. 342, n. 1-2, SI, p. 462-468, JAN 2021.
Web of Science Citations: 1
Abstract

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. (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