YRAST STATES IN <sup>188,190</sup><font>Os</font> NUCLEI

Mohammadi, S.; Angelis, G. de; Axiotis, M.; Bazzacco, D.; Bizzeti, P. G.; Brandolini, F.; Broda, R.; Bucurescu, D.; Farnea, E.; Gelletly, W.; Gadea, A.; Ionescu‐Bujor, M.; Iordăchescu, A.; Kroll, Thilo; Longdown, S.; Lunardi, S.; Mărginean, N.; Martínez, T.; Medina, N. H.; Podolyák, Z; Quintana, B.; Regan, P. H.; Rubio, B.; Ur, C. A.; Dobón, J.-J. Valiente; Walker, P. M.; Zhang, Y. H.

doi:10.1142/s0218301306005459

Cited by 7 publications

(2 citation statements)

References 14 publications

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“…Typical coincidence spectra are shown in figures 9 and 10. Some results of this experiment were also published before [12][13][14].…”

Section: Experiments Bmentioning

confidence: 80%

A comparison between channel selections in heavy ion reactions

Mohammadi¹

2009

Braz. J. Phys.

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The gamma rays de-exciting the yrast and near yrast states in neutron deficient as well as neutron rich nuclei from fusion-evaporation and deep-inelastic reactions and other emission particles have been recorded using an array of escape suppressed germanium detectors, a BGO ball, a recoil separator, silicon charge particle detectors and an ionization chamber. For each reaction type, we used different combinations of detectors with increasing gamma ay detectors from fusion-evaporation experiments to deep-inelastic experiments to separate different channels. In two experiments related to fusion-evaporation reactions, additional mass and charge particle detectors showed better resolution of spectra with lower statistics and some ambiguities. In the third experiment, which we used only an array of germanium detectors and a BGO ball, the statistics of spectra are relatively good but not sufficient, which means that we must use additional channel separators.

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“…Typical coincidence spectra are shown in figures 9 and 10. Some results of this experiment were also published before [12][13][14].…”

Section: Experiments Bmentioning

confidence: 80%

A comparison between channel selections in heavy ion reactions

Mohammadi¹

2009

Braz. J. Phys.

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“…*Corresponding Author name: M. Moonesi E-mail address: maryammoonesi63@gmail.com , high-spin states in the neutron-rich nuclei of 184-186-188-190 Os [5][6] and 185-187-191 Os [7] have been populated using the 85 Se+ 192 Os deep-inelastic reaction. The theoretical work was carried out by the projected shell model for the first time by Nilsson in 1955 [8] for considering to consider the deformed shape of the nucleus was presented.…”

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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