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.
Read the Original
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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