Calculation of energy levels and reduced transition probabilities B(E2) for 130Ba Isotope using IBM-1

Abstract

Through the current research, a study of the nuclear composition and the form of even isotones movements – those of the even atomic weight between 178 – 188, after specifying the dynamic symmetry of each nucleus using the first prototype of the interactive bosons (IBM-1), the intrinsic values as well as the intrinsic vectors were calculated using the (IBM-code) program.It also calculated the probability of the quadrant-polar, electric movement that are B(E2) as well the quadrant-polar, electric torque (QL)using the (IBMT-code) program.The 130Ba isotope with 56 protons and 74 neutrons, has the number of bosons is 7 and the ratio is 2.5235, the levels and , with energies 0.3574, 0.8914, 1.6021, 2.4894, 0.8971, 1.1795and1.5369 MeV are in good agreement comparing with the experimental energy. The level , with energy 2 0709MeV compared with the energy experimental 2.0537 MeV. So, this level confirmed in the present work. The levels and , with energies 3.5534, 3.5534, 1.6143, 1.6111, 2.5065, 2.5016 and 3.5689 MeV, respectively correspond to cases for which the angular momentum and/or parity of the corresponding states are not well established experimentally. The calculations have been predicted new levels with energies 3.5754, 2 7816.and 3.6689MeV for the angular momentum and parity and , respectively.From the experimental value of transition , the value of parameter eB (α2) have been calculated for 130Ba isotope and The comparison for 130Ba isotope under study. There is no available experimental transition data to many transitions, Therefore, it has been predicted using IBM-1. In this study, there are a good agreement between the experimental B(E2) values and the IBM-1 calculated generally.