Two-quasiparticle states in the interacting boson model. II. Electromagnetic properties in the SU(3) limit

1991 ◽  
Vol 44 (1) ◽  
pp. 223-232 ◽  
Author(s):  
D. Vretenar ◽  
V. Paar ◽  
M. Savoia ◽  
G. Bonsignori
Keyword(s):  
Electromagnetic Properties ◽  
Interacting Boson Model ◽  
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.

STUDY OF β DECAY FROM EVEN-EVEN 124Ba TO ODD-ODD 124Cs IN THE INTERACTING BOSON-FERMION-FERMION MODEL

2006 ◽  
Vol 15 (08) ◽  
pp. 1933-1939 ◽  
Author(s):  
N. YOSHIDA ◽  
L. ZUFFI ◽  
S. BRANT
Keyword(s):  
Energy Levels ◽  
Electromagnetic Properties ◽  
Interacting Boson Model ◽  
Β Decay ◽  
Fermion Model ◽  
Boson Model

We study the β decay from an even-even nucleus 124 Ba to an odd-odd nucleus 124 Cs in the interacting boson-fermion-fermion model (IBFFM). The even-even nucleus is described by the proton-neutron interacting boson model (IBM2) while the odd-odd nucleus is by the proton-neutron interacting boson-fermion-fermion model (IBFFM2). The result shows that the model is applicable to β-decay as well as the energy levels and the electromagnetic properties.

Energy Levels and Electromagnetic Transition of 90-94mo Nuclei Using Ibm-1

2020 ◽  
pp. 149-152
Keyword(s):  
Experimental Data ◽  
Transition Probability ◽  
Energy Levels ◽  
Dynamical Symmetry ◽  
Interacting Boson Model ◽  
Excitation Energies ◽  
Electromagnetic Transition ◽  
Boson Model ◽  
Energy States ◽  
Good Agreement

The energy states for the J , b , ɤ bands and electromagnetic transitions B (E2) values for even – even molybdenum 90 – 94 Mo nuclei are calculated in the present work of "the interacting boson model (IBM-1)" . The parameters of the equation of IBM-1 Hamiltonian are determined which yield the best excellent suit the experimental energy states . The positive parity of energy states are obtained by using IBS1. for program for even 90 – 94 Mo isotopes with bosons number 5 , 4 and 5 respectively. The" reduced transition probability B(E2)" of these neuclei are calculated and compared with the experimental data . The ratio of the excitation energies of the 41+ to 21+ states ( R4/2) are also calculated . The calculated and experimental (R4/2) values showed that the 90 – 94 Mo nuclei have the vibrational dynamical symmetry U(5). Good agreement was found from comparison between the calculated energy states and electric quadruple probabilities B(E2) transition of the 90–94Mo isotopes with the experimental data .

scholarly journals Role of Single-Particle Energies in Microscopic Interacting Boson Model Double Beta Decay Calculations

Universe ◽  
2021 ◽  
Vol 7 (3) ◽  
pp. 66
Author(s):  
Jenni Kotila
Keyword(s):  
Beta Decay ◽  
Single Particle ◽  
Field Potential ◽  
Double Beta Decay ◽  
Interacting Boson Model ◽  
Model Calculations ◽  
Single Particle Level ◽  
Particle Level ◽  
Boson Model

Single-particle level energies form a significant input in nuclear physics calculations where single-particle degrees of freedom are taken into account, including microscopic interacting boson model investigations. The single-particle energies may be treated as input parameters that are fitted to reach an optimal fit to the data. Alternatively, they can be calculated using a mean field potential, or they can be extracted from available experimental data, as is done in the current study. The role of single-particle level energies in the microscopic interacting boson model calculations is discussed with special emphasis on recent double beta decay calculations.

scholarly journals Octupole correlations in light actinides from the interacting boson model based on the Gogny energy density functional

2020 ◽  
Vol 102 (6) ◽  
Author(s):  
K. Nomura ◽  
R. Rodríguez-Guzmán ◽  
Y. M. Humadi ◽  
L. M. Robledo ◽  
J. E. García-Ramos
Keyword(s):  
Energy Density ◽  
Density Functional ◽  
Interacting Boson Model ◽  
Energy Density Functional ◽  
Model Based ◽  
Boson Model

scholarly journals Two-neutron separation energies, binding energies and phase transitions in the interacting boson model

2001 ◽  
Vol 688 (3-4) ◽  
pp. 735-754 ◽  
Author(s):  
J.E. García-Ramos ◽  
C. De Coster ◽  
R. Fossion ◽  
K. Heyde
Keyword(s):  
Phase Transitions ◽  
Binding Energies ◽  
Interacting Boson Model ◽  
Boson Model

Ra isotopes in the sdg interacting-boson model with one f-boson

1993 ◽  
Vol 559 (2) ◽  
pp. 193-207 ◽  
Author(s):  
Yoshinaga Naotaka ◽  
Mizusaki Takahiro ◽  
Otsuka Takaharu
Keyword(s):  
Interacting Boson Model ◽  
Boson Model
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