Application of the coherent density fluctuation model to study the nuclear matter properties of finite nuclei within the relativistic mean-field formalism

Ankit Kumar, H. C. Das, Manpreet Kaur, M. Bhuyan, and S. K. Patra
Phys. Rev. C 103, 024305 – Published 2 February 2021

Abstract

We obtained a density-dependent analytical expression of binding energy per nucleon for different neutron-proton asymmetry of the nuclear matter (NM) with a polynomial fitting, which manifests the results of effective-field theory motivated relativistic mean-field (E-RMF) model. This expression has the edge over the Brückner energy density functional [Phys. Rev. 171, 1188 (1968)] since it resolves the Coster-Band problem. The NM parameters like incompressibility, neutron pressure, symmetry energy, and its derivatives are calculated using the acquired expression of energy per nucleon. Furthermore, the weight function calculated by E-RMF densities are folded with calculated NM parameters within coherent density fluctuation model to find the properties of closed or semiclosed-shell even-even O16, Ca40, Ca48, Ni56, Zr90, Sn116, and Pb208 nuclei. The values obtained for the neutron pressure PA, symmetry energy SA, and its derivative LsymA known as the slope parameter lie within a narrow domain whereas there is a large variation in isoscalar incompressibility KA and surface incompressibility KsymA while moving from light to heavy nuclei. The sizable variation in KA and KsymA for light and heavy nuclei depicts their structural dependence due to the peculiar density distribution of each nucleus. A comparison of surface quantities calculated in the present work has also been made with ones obtained via Brückner energy density functional.

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  • Received 6 August 2020
  • Revised 15 December 2020
  • Accepted 25 January 2021

DOI:https://doi.org/10.1103/PhysRevC.103.024305

©2021 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

Ankit Kumar1,2,*, H. C. Das1,2, Manpreet Kaur1,2, M. Bhuyan3,4,†, and S. K. Patra1,2

  • 1Institute of Physics, Sachivalya Marg, Bhubaneswar-751005, India
  • 2Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
  • 3Department of Physics, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia
  • 4Institute of Research and Development, Duy Tan University, Da Nang 550000, Vietnam

  • *ankit.k@iopb.res.in
  • bunuphy@yahoo.com

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Vol. 103, Iss. 2 — February 2021

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