https://doi.org/10.1140/epjp/s13360-025-07270-4
Regular Article
Exploring shape coexistence in Ru isotopes via quadrupole interaction and d-boson occupation probabilities
Department of Physics, University of Tabriz, P.O. Box, 51664-16471, Tabriz, Iran
a
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Received:
1
August
2025
Accepted:
29
December
2025
Published online:
27
January
2026
Abstract
In this study, we investigate the structural properties of the Ru isotopic chain (88-114Ru) using the Interacting Boson Model (IBM). By analyzing quadrupole interaction probabilities and d-boson occupation, we explore the competition between pairing correlations and nuclear deformation. We classify isotopes based on their agreement with the U(5) dynamic limit. The results reveal a systematic trend: Nuclei far from magic numbers exhibit enhanced quadrupole interaction probabilities, whereas those near magic numbers show increased d-boson occupation, reinforcing the link between nuclear deformation and collective excitation mechanisms. Additionally, the analysis of the second 0+ state provides further insights into shape coexistence, establishing its role as a structural indicator in the transition between spherical and deformed configurations. This study not only contributes to understanding Ru isotopes but also lays the foundation for further exploration of nuclear phase transitions and structural evolution in medium-mass nuclei.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2026
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
