https://doi.org/10.1140/epja/s10050-025-01585-7
Regular Article
Shape evolution of even-even strontium isotopes near N = 50 shell closure
1
Department of Physics and Astronomical Sciences, Central University of Jammu, 181143, Samba, J&K, India
2
Department of Physics, University of Jammu, 180001, Jammu, India
3
Higher Education Department, Government of Jammu and Kashmir, Jammu, J&K, India
4
Department of Physics, University of Kashmir, 190006, Srinagar, India
a
manvi.phy@cujammu.ac.in
b
suramsingh@gmail.com
Received:
17
February
2025
Accepted:
6
May
2025
Published online:
22
May
2025
The structural properties of even-even Sr isotopes near neutron shell closure (N = 50) have been systematically studied by using Triaxial Projected Shell Model (TPSM), revealing significant variations in deformation, collectivity, and quasiparticle dynamics. Band diagram plots reveal the quaiparticle structure of these isotopes. The variation in reduced transition probabilities [B(E2)] reflects the evolution of collectivity with changes in neutron number and angular momentum, demonstrating a gradual decline near the shell closure (N = 50) and a sharp increase at N = 60, indicative of a transition to a more deformed regime. Furthermore, staggering plots and Potential Energy Surface (PES) analysis reveal a systematic shift from 
-soft to -rigid nuclear behavior as the isotopes approach the shell closure, underscoring the interplay between deformation parameters and nuclear configurations.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025
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.
