Tin Anomaly in Coulomb Energies and Analog Resonances of Neutron-Rich Tin Isotopes
- Authors: Lutostansky Y.S.1
-
Affiliations:
- National Research Center Kurchatov Institute
- Issue: Vol 86, No 3 (2023)
- Pages: 370-378
- Section: Articles
- URL: https://journals.rcsi.science/0044-0027/article/view/139733
- DOI: https://doi.org/10.31857/S0044002723030133
- EDN: https://elibrary.ru/RLFZWC
- ID: 139733
Cite item
Abstract
An anomaly in the distribution of Coulomb energies of tin isotopes (Sn anomaly) is determined. This anomaly manifests itself as follows: in the mass-number (@) dependence of @ for the isotopes @ Sn, experimental data on @ show a linear dependence close to a constant. The Coulomb energy difference @ between the Sn–Sb neighboring isobaric nuclei is approximated by a two-parameter expression. The energies of isobaric analog resonances, @, for the isotopes
Sn are calculated both on the basis of the resulting @ approximation within a @ phenomenological model and on the basis of the microscopic theory of finite Fermi systems. The results are compared with experimental data on
, and it is found that the phenomenological model describes the energies
quite accurately, and so do the new self-consistent relativistic model.
About the authors
Yu. S. Lutostansky
National Research Center Kurchatov Institute
Author for correspondence.
Email: lutostansky@yandex.ru
Moscow, Russia
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