Ritvik Gupta, Aneeqa Basheer, Suram Singh, Manvi Rajput, G. H. Bhat, J. A. Sheikh, Arun Bharti
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Theoretical investigation of near yrast bands in odd-mass \(^{123-131}\)La isotopes
Theoretical investigation of negative parity bands in odd-mass \(^{123-131}\)La isotopes has been carried out by using Triaxial Projected Shell Model approach (TPSM). Potential Energy Surface (PES) calculations suggest \(\gamma \)-soft nature of these isotopes. This finding is further supported by an analysis of their quadrupole shape invariants, which indicates that the nuclei have a soft-triaxial shape. Suitable deformation parameters, which are in agreement with the previous studies, are used to generate the band energies of the yrast band, \(\gamma \)-band, and their signature partners. The bandhead energies of all the bands are in good agreement with the experimental values. Further, structural properties like band diagrams, backbending in moment of inertia, dynamic moment of inertia, signature splitting and reduced transition probabilities (B(E2) and B(M1)) have also been calculated.
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