sdg Interacting boson model: hexadecupole degree of freedom in nuclear structure

Pramana ◽  
1992 ◽  
Vol 39 (5) ◽  
pp. 413-491 ◽  
Author(s):  
Y Durga Devi ◽  
V Krishna Brahmam Kota
2011 ◽  
Vol 8 (3) ◽  
pp. 772-780
Author(s):  
Baghdad Science Journal

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.


Author(s):  
Huda H. Kassim ◽  
Amir A. Mohammed-Ali ◽  
Fadhil I. Sharrad ◽  
I. Hossain ◽  
Khalid S. Jassim

2020 ◽  
Vol 29 (10) ◽  
pp. 2050088
Author(s):  
B. C. He ◽  
Y. Zhang ◽  
L. Li ◽  
Y. A. Luo ◽  
F. Pan ◽  
...  

Typical features of the Bose–Fermi symmetries associated with [Formula: see text] and [Formula: see text] limits in the interacting boson model are described in the SD-pair shell model (SDPSM) framework for like-nucleon system. It is found that the limiting spectra associated with [Formula: see text] (vibrational) and [Formula: see text] (rotational) in the interacting boson–fermion model can be well reproduced in the SDPSM framework. It is shown that coupling of collective degree of freedom with the single-particle degree of freedom in the pairing interaction almost has no effect on the spectrum of odd-A system comparing to the adjacent even–even system, while the coupling of the collective degree of freedom with the single-particle degree of freedom in the quadrupole–quadrupole interaction results in the level splitting of several excited levels.


2015 ◽  
Vol 90 (8) ◽  
pp. 085303 ◽  
Author(s):  
M Saxena ◽  
J B Gupta ◽  
S Mandal

1991 ◽  
Vol 44 (1) ◽  
pp. 145-151 ◽  
Author(s):  
A. B. Balantekin ◽  
J. R. Bennett ◽  
N. Takigawa

2019 ◽  
Vol 18 ◽  
pp. 37
Author(s):  
D. Bonatsos

Dynamical symmetries have played a central role for many years in the study of nuclear structure. Recently, the concepts of Partial Dynamical Symmetry (PDS) and Quasi-Dynamical Symmetry (QDS) have been introduced. We shall discuss examples of PDS and QDS appearing in the large boson number limit of the Interacting Boson Mod


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