scholarly journals Characteristics of Energy States and their Calculation Using IBM-1 and IVBM of Isotones 180HF, 182W, 184Os, 186Pt

2021 ◽  
Vol 16 (1) ◽  
pp. 48-72
Author(s):  
Mohammed Alnejm
Keyword(s):  
2020 ◽  
pp. 149-152

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 .


2020 ◽  
pp. 004711782097032
Author(s):  
Diana Panke

Cooperation in regional international organizations (RIOs) can help member states to work toward and perhaps achieve policy goals that would not be feasible unilaterally. Thus, RIOs might be used as a means of states to compensate for domestic shortcomings in output performance. Do states equip RIOs with policy competencies in order to compensate corresponding domestic performance shortcomings? The analysis of a novel database on policy competencies of 76 RIOs between 1945 and 2015 reveals that usually RIOs are not usually used as window-dressing devices by which states disguise limited domestic output performance. Instead, governments tend to equip RIOs with policy competencies in order to further strengthen their already good output performance in most policy areas. However, in the policy area, ‘energy’ states tend to confer more competencies to their respective RIOs, the worse they perform domestically, indicating that output-related compensation dynamics might be at play in this field.


1992 ◽  
Vol 46 (6) ◽  
pp. 3296-3304 ◽  
Author(s):  
Mihnea Dulea ◽  
Magnus Johansson ◽  
Rolf Riklund

Neuropeptides ◽  
2021 ◽  
Vol 88 ◽  
pp. 102152
Author(s):  
Swapnil A. Shewale ◽  
Shantaj M. Deshbhratar ◽  
Ameeta Ravikumar ◽  
Shobha Y. Bhargava
Keyword(s):  

2021 ◽  
Vol 103 (23) ◽  
Author(s):  
H. V. Grushevskaya ◽  
G. G. Krylov ◽  
S. P. Kruchinin ◽  
B. Vlahovic ◽  
Stefano Bellucci

2020 ◽  
Vol 1643 ◽  
pp. 012155
Author(s):  
S. Pirrie ◽  
C. Wheldon ◽  
Tz. Kokalova ◽  
J. Bishop ◽  
R. Hertenberger ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document