New pattern in regular nuclei based on their experimental quadrupole transition rates and some new candidates

Asgar Hosseinnezhad; Masoud Seidi; Hadi Sabri

doi:10.1038/s41598-023-31002-2

New pattern in regular nuclei based on their experimental quadrupole transition rates and some new candidates

Sci Rep. 2023 Mar 8;13(1):3849. doi: 10.1038/s41598-023-31002-2.

Authors

Asgar Hosseinnezhad¹, Masoud Seidi², Hadi Sabri³

Affiliations

¹ Department of Physics, University of Tabriz, P.O. Box 51664-16471, Tabriz, Iran.
² Department of Physics, University of Ilam, P.O. Box 61391-7711, Ilam, Iran.
³ Department of Physics, University of Tabriz, P.O. Box 51664-16471, Tabriz, Iran. h-sabri@tabrizu.ac.ir.

Abstract

In this paper, we tried to get a new signature of regular nuclei based on their quadrupole transition rates. We have analyzed the experimental electric quadrupole transition probabilities of well-known "regular nuclei". The results indicate finding specific repetition patterns for E2 transition rates, similar to what has been reported for the energy levels of these nuclei. We also tested the existence of this observed repetition scheme for all known isotopes whose experimental transition rates are available and introduced several new candidates as regular nuclei. Then, the energy spectra (Experimental) of these new suggested "regular nuclei" are investigated in the framework of the Interacting Boson Model, in which the parameters of Hamiltonian confirm the placement of these nuclei in the "Alhassid-Whelan arc of regularity" region. In order to further study the statistical distribution of experimental energy levels related to the electromagnetic transitions we are considering, we studied using the random matrix theory. The results confirmed their regularity.