Analysis of the Heavy Nuclei Levels with the Newest Data

Binesh, A. R.; Mohammadi, S.

doi:10.3923/rjp.2009.32.35

Cited by 2 publications

(3 citation statements)

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“…In this section, by using PSM code which was written based on the Nilsson model in deformed single particles states [3], Yrast spectra which consist of a collection of the bands in the lowest energies after diagonalization of the Hamiltonian, Eq. ( 7) , in the projected basis, Eq.…”

Section: Results and Discussion Iiii Yrast Spectra Structurementioning

confidence: 99%

“…Where |0> the vacuum state and 𝑎 † are the quasi-particle (qp) creation operators and the index υ(π) stands for neutrons (protons). Then by defining the angular momentum image operator P ̂MK I as [3]:…”

Section: Projected Shell Modelmentioning

confidence: 99%

“…The electromagnetic spectrum of the gamma rays resulting in the excited nucleus in high spin always for studying nuclear structure was important. Especially, for neutron-rich heavy deformed nuclei in the rare-earth region with 180 < A < 200, in the past few years, it was caused that using nuclear spectroscopic techniques change has changed and these nuclei show new band structures [1][2][3]. Very few theoretical and experimental studies have been reported with the aim of understanding the osmium isotopes.…”

Section: Introductionsmentioning

confidence: 99%

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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: Results and Discussion Iiii Yrast Spectra Structurementioning

confidence: 99%

Section: Projected Shell Modelmentioning

confidence: 99%