Signatures for mixed-symmetry states in the U(5) limit of the neutron-proton interacting boson model

1993 ◽  
Vol 48 (6) ◽  
pp. 2657-2664 ◽  
Author(s):  
A. Giannatiempo ◽  
G. Maino ◽  
A. Nannini ◽  
P. Sona
Keyword(s):  
Interacting Boson Model ◽  
Mixed Symmetry ◽  
Mixed Symmetry States ◽  
Boson Model

scholarly journals Mixed Symmetry States in 92Zr and 94Mo Nuclei

2021 ◽  
Vol 66 (12) ◽  
pp. 1013
Author(s):  
S.N. Abood ◽  
A.A. Al-Rawi ◽  
L.A. Najam ◽  
F.M. Al-Jomaily
Keyword(s):  
Experimental Data ◽  
Energy Spectra ◽  
Interacting Boson Model ◽  
Transition Rates ◽  
Collective Models ◽  
Electromagnetic Transition ◽  
Mixed Symmetry ◽  
Mixed Symmetry States ◽  
Boson Model ◽  
Phonon Model

Mixed-symmetry states of 92Zr and 94Mo isotopes are investigated with the use of the collective models, Interacting Boson Model-2 (IBM-2) and Quasiparticle Phonon Model (QPM). The energy spectra and electromagnetic transition rates for these isotopes are calculated. The results of IBM-2 and QPM are compared with available experimental data. We have obtained a satisfactory agreement, and IBM-2 gives a better description. In these isotopes, we observe a few states having a mixed symmetry such as 2+2, 2+3, 3+1, and 1+s. It is found that these isotopes have a vibrational shape corresponding to the U(5) symmetry.

1+mixed symmetry states and dipole transitions in the extended proton-neutron interacting boson model

1998 ◽  
Vol 58 (1) ◽  
pp. 232-236 ◽  
Author(s):  
B. Decroix ◽  
C. De Coster ◽  
K. Heyde ◽  
A. M. Oros ◽  
J. De Beule
Keyword(s):  
Interacting Boson Model ◽  
Mixed Symmetry ◽  
Mixed Symmetry States ◽  
Boson Model

Mixed-symmetry states in the neutron-proton interacting boson model

1985 ◽  
Vol 438 (1) ◽  
pp. 41-77 ◽  
Author(s):  
O. Scholten ◽  
K. Heyde ◽  
P. van Isacker ◽  
J. Jolie ◽  
J. Moreau ◽  
...  
Keyword(s):  
Interacting Boson Model ◽  
Mixed Symmetry ◽  
Mixed Symmetry States ◽  
Boson Model

scholarly journals The Prediction of the Electromagnetic Properties and the ?(E2/M1) of 110-116Cd-Isotopes in IBM Model

2011 ◽  
Vol 8 (3) ◽  
pp. 772-780
Author(s):  
Baghdad Science Journal
Keyword(s):  
Nuclear Structure ◽  
The State ◽  
Electromagnetic Properties ◽  
Interacting Boson Model ◽  
Mixing Ratios ◽  
Mixed Symmetry ◽  
Full Symmetry ◽  
Boson Model ◽  
Cd Isotopes ◽  
Spin Contribution

The Nuclear structure of 110-116Cd isotopes was studied theoretically in the framework of the interacting boson model of IBM-l and IBM-2. The properties of the lowest mixed symmetry states such as the 1+, 2+ and 3+ levels produced by the IBM-2 model in the vibrational-limit U(5) of Cd - isotopes are studied in details. This analysis shows that the character of mixed symmetry of 2+ is shared between and states in 110-114Cd – isotopes, the large shar goes to s, while in isotope, the state is declared as a mixed symmetry state without sharing. This identification is confirmed by the percentage of F-spin contribution. The electromagnetic properties of E2 and Ml operators were investigated and the results were analyzed. Various values of eB in the IBM-l and fixed e?= 0.104 eb and e?=0.093 e.b in the IBM-2 are used to generate the B(E2) and Q(2+). Fixed values of g? =0.31?N and g? =-0.31?N were adopted to generate the B(Ml) and ?(E2/ Ml) mixing ratios. The small values of ?(E2/Ml) which obtained for transition from MS- states to those of full symmetry support the conclusion that there may be a strong Ml transition between these states.

Mixed-Symmetry Interacting-Boson-Model States in the NucleiBa140,Ce142, andNd144withN=84

1984 ◽  
Vol 53 (26) ◽  
pp. 2469-2472 ◽  
Author(s):  
W. D. Hamilton ◽  
A. Irbäck ◽  
J. P. Elliott
Keyword(s):  
Interacting Boson Model ◽  
Mixed Symmetry ◽  
Boson Model

scholarly journals Search for mixed-symmetry state in even-even $^{130-138}$Ce isotopes within the interacting boson model-2

2015 ◽  
Vol 39 ◽  
pp. 137-148 ◽  
Author(s):  
Ali Mahdi Abdul HUSSAIN ◽  
Falih Hussain AL-KHUDAIR ◽  
Abdul Ridha Hussain SUBBER
Keyword(s):  
Interacting Boson Model ◽  
Mixed Symmetry ◽  
Boson Model
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