GOE-type energy level statistics and regular classical dynamics for rotational nuclei in the interacting boson model

1992 ◽  
Vol 69 (15) ◽  
pp. 2184-2187 ◽  
Author(s):  
V. Paar ◽  
D. Vorkapić ◽  
A. E. L. Dieperink
Keyword(s):  
Energy Level ◽  
Interacting Boson Model ◽  
Classical Dynamics ◽  
Level Statistics ◽  
Boson Model

scholarly journals Nuclear Gamma-soft Character in ¹²⁸Ba

2021 ◽  
Vol 3 (3) ◽  
pp. 16-20
Author(s):  
I. Hossain ◽  
Hewa Y. Abdullah ◽  
I. M. Ahmed ◽  
Fadhil I. Sharrad
Keyword(s):  
Energy Level ◽  
Vector Boson ◽  
Negative Parity ◽  
Measured Data ◽  
Interacting Boson Model ◽  
Parity Band ◽  
Boson Model ◽  
Experimental Values ◽  
Negative Parity Band

We report the properties of gamma soft O(6) of 128Ba isotones with neutron N = 72 using Interacting Vector Boson Model (IVBM), interacting Boson Model (IBM-1), Bohr-Mottelson Model (BM), and Doma-El-Gendy (D-G) relation. The first energy level ( ) and ratio  have been investigated which show that 128Ba has gamma-soft character. The curves Eγ/Vs.J of E-GOS of even 128Ba nucleus were compared with the standard curves of vibrational, gamma soft and rotational limits. The staggering factors were studied of available measured data of 128Ba nucleus. The yrast levels of this isotope are calculated by the model of VBMI, IBM-1, BM and D-G and they were compared by measured data. The negative parity band of 128Ba was calculated by IVBM and BM model and compared with experimental values.

scholarly journals PERES LATTICES IN NUCLEAR STRUCTURE

2009 ◽  
Vol 18 (04) ◽  
pp. 1058-1061 ◽  
Author(s):  
MICHAL MACEK ◽  
PAVEL STRÁNSKÝ ◽  
PAVEL CEJNAR
Keyword(s):  
Nuclear Structure ◽  
Dynamical Symmetry ◽  
Interacting Boson Model ◽  
Classical Dynamics ◽  
Boson Model

A method by Peres is used to represent spectra of the interacting boson model as lattices in the plane of energy versus an arbitrary observable average (or variance). Ordered (disordered) lattices are signatures of regularity (chaos) in both quantum and classical dynamics. The method is also apt to disclose exact or approximate dynamical symmetry.

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

Arithmetical chaos and violation of universality in energy level statistics

1992 ◽  
Vol 69 (15) ◽  
pp. 2188-2191 ◽  
Author(s):  
J. Bolte ◽  
G. Steil ◽  
F. Steiner
Keyword(s):  
Energy Level ◽  
Level Statistics

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
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