ROLE OF ISOVECTOR-ISOSCALAR COUPLING ON CHARGE RADIUS OF HEAVY AND SUPERHEAVY NUCLEI

Authors

  • Netta Liliani Teknik Mesin, Fakultas Teknik, Universitas Islam 45, Bekasi 17113, Indonesia

DOI:

https://doi.org/10.21009/SPEKTRA.072.05

Keywords:

isovector-isoscalar coupling, charge radius, heavy nuclei, superheavy nuclei

Abstract

We have investigated the effect of the isovector-isoscalar coupling on the finite nuclei and nuclear matter properties, the neutron skin thickness of 208Pb, and the charge radius on heavy and superheavy nuclei calculated by the relativistic mean-field (RMF) model. In this work, we generates two parameter sets, i.e., PTE16 and PTE31. The numbers 16 and 31 denote the isovector-isoscalar coupling terms, while T and E denote the tensor coupling and electromagnetic exchange terms, respectively. We found that PTE16 and PTE31 are compatible with the constraints obtained by R. Essick, et al., arXiv: 2102.10074v1 [nucl-th] (2021). We also found that the increase of the isovector-isoscalar coupling terms gives a significant effect on the binding energy and the charge radius on heavy nuclei except for the charge radius of 208Pb. Increased of the isovector-isoscalar coupling terms make the values of charge radius prediction increase too, but vice versa for the neutron skin thickness and nuclear matter prediction. PTE31 yields symmetry energy J = 31.521 MeV, slope L = 57.643 MeV, and neutron skin thickness = 0.21419 fm. While the β2 correction (for deform nuclei) does not always give a significant effect on the charge radius.

References

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Published

2022-09-30

How to Cite

Liliani, N. (2022). ROLE OF ISOVECTOR-ISOSCALAR COUPLING ON CHARGE RADIUS OF HEAVY AND SUPERHEAVY NUCLEI . Spektra: Jurnal Fisika Dan Aplikasinya, 7(2), 103–112. https://doi.org/10.21009/SPEKTRA.072.05

Issue

Vol. 7 No. 2 (2022): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 7 Issue 2, September 2022

Section

Articles

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