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The interacting boson model (IBM-1) has been used to perform the moment of inertia of the nuclear structure of yrast bands of even-even 120-124Te isotopes. These values are found to be in agreement with previous experimental data. Moreover, IBM-1 was applied to study the systematic moment of inertia as a function of the even neutron number of 120-124Te isotopes. For even neutrons N= 68 to 72 of Te isotopes, nature properties of backbending were indicated from the analysis of the moment of inertia as a function of the square of the rotational angular velocity. [ABSTRACT FROM AUTHOR]

The level scheme of the 148,150,152,154,156,158Sm isotopes have been investigated using both IBA-1 and IBA-2 versions of Interacting Boson Approximation Model. IBA-1 and IBA-2 Hamiltonian parameters are obtained as well as the extraction of the energy levels. Also, the electric quadrupole transition probabilities B(E2:Ji → Jf) of the Sm isotopes were calculated. In calculations, the theoretical energy levels and the electric quadrupole transition probabilities have been obtained by using PHINT code. Good agreement was found from comparison between the calculated energy levels and the electric quadrupole transition probabilities B(E2) of the Sm isotopes with the experimental data. [ABSTRACT FROM AUTHOR]