Study of the nucleon-rich effect in 158Er and 185Os rare-earth nuclei using the projected shell model

Moonesi, Maryam; Haghpeima, Alireza; Shahriari, Mehran

doi:10.1007/s40042-021-00127-w

Cited by 3 publications

(1 citation statement)

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“…Finally, in 1997, the FORTRAN code of the PSM for PCs was written and published [10] and has been quietly successful and is still used today. By the PSM code, many articles have been published, including for Osmium and Erbium, back-bending and nucleon-rich phenomenon due to the reduced electromagnetic transition probabilities, B(M1)/B(E2), by Shahriari et al [11] and Moonesi et al [12], calculated and compared with the experimental values. In the present work, the main purpose is a systematic study of the effect of increasing neutrons number on the deformation parameter, ε2, and nucleus rotation mode in slightly high spin states of 185-187-189 Os isotopes by use of the projected shell model.…”

Section: Introductionsmentioning

confidence: 99%

Shape Changes in Odd-Even Osmium Isotopes

Moonesi

Mohammadi

Shahriari

2022

Jonra

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This paper has calculated the energy levels of 185-187-189 Os isotopes using the projected shell model (PSM). Yrast Spectrum, nucleus rotation frequency and the ratio of reduced electromagnetic transition probabilities, B(E2)/B(M1) plots versus spin for understanding the structure of multi-quasiparticle band up to the spins 47/2 + , 33/2 + and 31/2 + for these isotopes, are plotted, respectively. It was found that in the spin ranges 35/2 + -39/2 + , 31/2 + -33/2 + , and 27/2 + -29/2 + , due to 3-quasiparticle band-crossing, simultaneously by increasing rotational inertia of the nucleus, nucleus rotation frequency decreases greatly and as an important result, B(E2)/B(M1) ratio, the electrical properties of the nucleus in these spins increase. Indeed, in these isotopes, observed that by increasing neutron number, the deformation parameter, ε2 decreases as well, and by increasing spin in especial spins, due to nucleon alignment phenomenon, the nucleus rotational behavior decreases inverse the vibration mode.

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Section: Introductionsmentioning

confidence: 99%