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Back-bending and up-bending study in the Yrast states of 178−184Os isotopes using projected shell model

  • Original Paper - Particles and Nuclei
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Abstract

The Yrast spectrum of 178−184Os nuclei up to high angular momentum states has been calculated using the PSM model (Projected Shell Model). For this purpose, plots of back-bending, energy, and reduced electromagnetic transition probabilities in high spins have been drawn. In the energy diagram, the passage of two and four quasiparticle bands in the mentioned spins of each isotope, which is a sign of the alignment of nucleons, has been investigated and is the reason for the back-bending in the desired spin. The Yrast spectra in osmium isotopes are not created by a single intrinsic state but are created by multi-quasiparticle states. Also, to better study the back-bending phenomena in the above isotopes, crossing angle \({\rho }_{c}\) and reduced electromagnetic transition probabilities have been calculated using the PSM model. In the B (M1)/B (E2) ratio, the significant drop at the spins mentioned for each isotope corresponds precisely to the change in moment of inertia in the back-bending plot of these isotopes.

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Authors and Affiliations

  1. Department of Physics, Payame Noor University, PO BOX 19395-3697, Tehran, Iran

    Samane Pourhasan, Saeed Mohammadi & Zahra Sajjadi

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  1. Samane Pourhasan
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  2. Saeed Mohammadi
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  3. Zahra Sajjadi
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Pourhasan, S., Mohammadi, S. & Sajjadi, Z. Back-bending and up-bending study in the Yrast states of 178−184Os isotopes using projected shell model. J. Korean Phys. Soc. 82, 942–953 (2023). https://doi.org/10.1007/s40042-023-00755-4

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