What is it about?

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

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Why is it important?

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, and 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.


Mrutunjaya Bhuyan, presently working as a Senior Lecturer at University of Malaya and acting as Deputy Head of Center of Theoretical and Computational Physics (CTCP). His Academic carrier includes FAPESP Postdoctoral Fellow@ Institute Tecnologico de Aeronautica, Sao Jose dos Campos, Brazil (2019–2016); CAS Postdoctoral Fellow @ Institute of Theoretical Physics, Chinese Academy of Sciences, China (2014–2016); DAE Postdoctoral Fellow @ Institute of Physics, Department of Atomic Energy, India (2013–2014). He received his Ph.D. in Theoretical Nuclear and Astrophysics. His research areamainly focuses cover the structural and reaction dynamics of finite nuclear systems and properties of infinite nuclear matter including neutron stars. He currently serves as an Editorial Member of three international peer-review scientific journal publishers, Journal of Nuclear Physics (CU), Science Publishing Group (USA), and SCIREA Journal of Physics (USA). He has beenwoned the Young ScientistAward in Physics 2018, Odisha Physical Society.

Mrutunjaya Bhuyan
University of Malaya

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This page is a summary of: Symmetry energy and neutron pressure of finite nuclei using the relativistic mean‐field formalism, Astronomische Nachrichten, January 2021, Wiley, DOI: 10.1002/asna.202113951.
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